diff options
author | ru <ru@FreeBSD.org> | 2003-05-01 13:15:22 +0000 |
---|---|---|
committer | ru <ru@FreeBSD.org> | 2003-05-01 13:15:22 +0000 |
commit | 1a17e98fb2e3ecba5ba136f8d1ae8d39061d2f65 (patch) | |
tree | e6cd9552c06f55c81873906321c3f600223592c7 /contrib/groff/src/devices/grohtml | |
parent | c96557721be60d942f4d486b9ea7f9b7cbb034cc (diff) | |
download | FreeBSD-src-1a17e98fb2e3ecba5ba136f8d1ae8d39061d2f65.zip FreeBSD-src-1a17e98fb2e3ecba5ba136f8d1ae8d39061d2f65.tar.gz |
Removed files not present in v1.19 import.
Diffstat (limited to 'contrib/groff/src/devices/grohtml')
-rw-r--r-- | contrib/groff/src/devices/grohtml/html-table.cc | 687 | ||||
-rw-r--r-- | contrib/groff/src/devices/grohtml/html-text.cc | 964 | ||||
-rw-r--r-- | contrib/groff/src/devices/grohtml/output.cc | 356 | ||||
-rw-r--r-- | contrib/groff/src/devices/grohtml/post-html.cc | 3745 |
4 files changed, 0 insertions, 5752 deletions
diff --git a/contrib/groff/src/devices/grohtml/html-table.cc b/contrib/groff/src/devices/grohtml/html-table.cc deleted file mode 100644 index a2bb255..0000000 --- a/contrib/groff/src/devices/grohtml/html-table.cc +++ /dev/null @@ -1,687 +0,0 @@ -// -*- C++ -*- -/* Copyright (C) 2002 Free Software Foundation, Inc. - * - * Gaius Mulley (gaius@glam.ac.uk) wrote html-table.cc - * - * html-table.h - * - * provides the methods necessary to handle indentation and tab - * positions using html tables. - */ - -/* -This file is part of groff. - -groff is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -groff is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License along -with groff; see the file COPYING. If not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "driver.h" -#include "stringclass.h" -#include "cset.h" -#include "html-table.h" -#include "ctype.h" -#include "html.h" - -#if !defined(TRUE) -# define TRUE (1==1) -#endif -#if !defined(FALSE) -# define FALSE (1==0) -#endif - -tabs::tabs () - : tab(NULL) -{ -} - -tabs::~tabs () -{ - delete_list(); -} - -/* - * delete_list - frees the tab list and sets tab to NULL. - */ - -void tabs::delete_list (void) -{ - tab_position *p = tab; - tab_position *q; - - while (p != NULL) { - q = p; - p = p->next; - free(q); - } - tab = NULL; -} - -void tabs::clear (void) -{ - delete_list(); -} - -/* - * compatible - returns TRUE if the tab stops in, s, do - * not conflict with the current tab stops. - * The new tab stops are _not_ placed into - * this class. - */ - -int tabs::compatible (const char *s) -{ - char align; - int total=0; - tab_position *last = tab; - - if (last == NULL) - return FALSE; // no tab stops defined - - // move over tag name - while ((*s != (char)0) && !isspace(*s)) - s++; - - while (*s != (char)0 && last != NULL) { - // move over white space - while ((*s != (char)0) && isspace(*s)) - s++; - // collect alignment - align = *s; - // move over alignment - s++; - // move over white space - while ((*s != (char)0) && isspace(*s)) - s++; - // collect tab position - total += atoi(s); - // move over tab position - while ((*s != (char)0) && !isspace(*s)) - s++; - if (last->alignment != align || last->position != total) - return FALSE; - - last = last->next; - } - return TRUE; -} - -/* - * init - scans the string, s, and initializes the tab stops. - */ - -void tabs::init (const char *s) -{ - char align; - int total=0; - tab_position *last = NULL; - - clear(); // remove any tab stops - - // move over tag name - while ((*s != (char)0) && !isspace(*s)) - s++; - - while (*s != (char)0) { - // move over white space - while ((*s != (char)0) && isspace(*s)) - s++; - // collect alignment - align = *s; - // move over alignment - s++; - // move over white space - while ((*s != (char)0) && isspace(*s)) - s++; - // collect tab position - total = atoi(s); - // move over tab position - while ((*s != (char)0) && !isspace(*s)) - s++; - if (last == NULL) { - tab = (tab_position *)malloc(sizeof(tab_position)); - last = tab; - } else { - last->next = (tab_position *)malloc(sizeof(tab_position)); - last = last->next; - } - last->alignment = align; - last->position = total; - last->next = NULL; - } -} - -/* - * find_tab - returns the tab number corresponding to the position, pos. - */ - -int tabs::find_tab (int pos) -{ - tab_position *p; - int i=0; - - for (p = tab; p != NULL; p = p->next) { - i++; - if (p->position == pos) - return i; - } - return 0; -} - -/* - * get_tab_pos - returns the, nth, tab position - */ - -int tabs::get_tab_pos (int n) -{ - tab_position *p; - - n--; - for (p = tab; (p != NULL) && (n>0); p = p->next) { - n--; - if (n == 0) - return p->position; - } - return 0; -} - -char tabs::get_tab_align (int n) -{ - tab_position *p; - - n--; - for (p = tab; (p != NULL) && (n>0); p = p->next) { - n--; - if (n == 0) - return p->alignment; - } - return 'L'; -} - -/* - * dump_tab - display tab positions - */ - -void tabs::dump_tabs (void) -{ - int i=1; - tab_position *p; - - for (p = tab; p != NULL; p = p->next) { - printf("tab %d is %d\n", i, p->position); - i++; - } -} - -/* - * html_table - methods - */ - -html_table::html_table (simple_output *op, int linelen) - : columns(NULL), out(op), linelength(linelen), last_col(NULL), start_space(FALSE) -{ - tab_stops = new tabs(); -} - -html_table::~html_table () -{ - if (tab_stops != NULL) - delete tab_stops; -} - -/* - * remove_cols - remove a list of columns as defined by, c. - */ - -void html_table::remove_cols (cols *c) -{ - cols *p; - - while (c != NULL) { - p = c; - c = c->next; - free(p); - } -} - -/* - * set_linelength - sets the line length value in this table. - * It also adds an extra blank column to the - * table should linelen exceed the last column. - */ - -void html_table::set_linelength (int linelen) -{ - cols *p = NULL; - cols *c; - linelength = linelen; - - for (c = columns; c != NULL; c = c->next) { - if (c->right > linelength) { - c->right = linelength; - remove_cols(c->next); - c->next = NULL; - return; - } - p = c; - } - if (p != NULL && p->right != 0) - add_column(p->no+1, p->right+1, linelen, 'L'); -} - -/* - * get_effective_linelength - - */ - -int html_table::get_effective_linelength (void) -{ - if (columns != NULL) - return linelength - columns->left; - else - return linelength; -} - -/* - * add_indent - adds the indent to a table. - */ - -void html_table::add_indent (int indent) -{ - if (columns != NULL && columns->left > indent) - add_column(0, indent, columns->left-1, 'L'); -} - -/* - * emit_table_header - emits the html header for this table. - */ - -void html_table::emit_table_header (int space) -{ - if (columns == NULL) - return; - - // dump_table(); - - last_col = NULL; - if (linelength > 0) { - int n = no_columns() + no_gaps(); - - out->nl(); - out->nl(); - if (space) - out->put_string("<p>"); - start_space = space; - out->put_string("<table width=\"100%\" border=0 rules=\"none\" frame=\"void\"\n cols=\"").put_number(n).put_string("\" cellspacing=\"0\" cellpadding=\"0\">").nl(); - out->put_string("<tr valign=\"top\" align=\"left\">").nl(); - } -} - -/* - * get_right - returns the right most position of this column. - */ - -int html_table::get_right (cols *c) -{ - if (c != NULL && c->right > 0) - return c->right; - if (c->next != NULL) - return c->left; - return linelength; -} - -/* - * emit_col - moves onto column, n. - */ - -void html_table::emit_col (int n) -{ - cols *c = columns; - cols *b = columns; - int width = 0; - - // must be a different row - if (last_col != NULL && n <= last_col->no) - emit_new_row(); - - while (c != NULL && c->no < n) - c = c->next; - - // can we find column, n? - if (c != NULL && c->no == n) { - // shutdown previous column - if (last_col != NULL) - out->put_string("</td>").nl(); - - // find previous column - if (last_col == NULL) - b = columns; - else - b = last_col; - - // have we a gap? - if (last_col != NULL) { - if (is_gap(b)) - out->put_string("<td width=\"").put_number(is_gap(b)).put_string("%\"></td>").nl(); - b = b->next; - } - - // move across to column n - while (b != c) { - width = ((get_right(b) - b->left) * 100)/get_effective_linelength(); - out->put_string("<td width=\"").put_number(width).put_string("%\"></td>").nl(); - // have we a gap? - if (is_gap(b)) - out->put_string("<td width=\"").put_number(is_gap(b)).put_string("%\"></td>").nl(); - b = b->next; - } - width = ((get_right(b) - b->left) * 100)/get_effective_linelength(); - switch (b->alignment) { - - case 'C': out->put_string("<td width=\"").put_number(width).put_string("%\" align=center>").nl(); - break; - case 'R': out->put_string("<td width=\"").put_number(width).put_string("%\" align=right>").nl(); - break; - default: - out->put_string("<td width=\"").put_number(width).put_string("%\">").nl(); - } - // remember column, b - last_col = b; - } -} - -/* - * finish_row - - */ - -void html_table::finish_row (void) -{ - int n = 0; - cols *c; - - if (last_col != NULL) { - for (c = last_col->next; c != NULL; c = c->next) - n = c->no; - - if (n > 0) - emit_col(n); - out->put_string("</td>").nl(); - } -} - -/* - * emit_new_row - move to the next row. - */ - -void html_table::emit_new_row (void) -{ - finish_row(); - out->put_string("<tr valign=\"top\" align=\"left\">").nl(); - last_col = NULL; -} - -void html_table::emit_finish_table (void) -{ - finish_row(); - // out->put_string("linelength = ").put_number(linelength).nl(); - out->put_string("</table>"); - if (start_space) - out->put_string("</p>"); - out->nl(); -} - -/* - * add_column - adds a column. It returns FALSE if hstart..hend - * crosses into a different columns. - */ - -int html_table::add_column (int coln, int hstart, int hend, char align) -{ - cols *c = get_column(coln); - - if (c == NULL) - return insert_column(coln, hstart, hend, align); - else - return modify_column(c, hstart, hend, align); -} - -/* - * get_column - returns the column, coln. - */ - -cols *html_table::get_column (int coln) -{ - cols *c = columns; - - while (c != NULL && coln != c->no) - c = c->next; - - if (c != NULL && coln == c->no) - return c; - else - return NULL; -} - -/* - * insert_column - inserts a column, coln. - * It returns TRUE if it does not bump into - * another column. - */ - -int html_table::insert_column (int coln, int hstart, int hend, char align) -{ - cols *c = columns; - cols *l = NULL; - cols *n = NULL; - - while (c != NULL && c->no < coln) { - l = c; - c = c->next; - } - if ((l != NULL) && (hstart < l->right)) - return FALSE; // new column bumps into previous one - - if ((l != NULL) && (l->next != NULL) && - (l->next->left < hend)) - return FALSE; // new column bumps into next one - - n = (cols *)malloc(sizeof(cols)); - if (l == NULL) { - n->next = columns; - columns = n; - } else { - n->next = l->next; - l->next = n; - } - n->left = hstart; - n->right = hend; - n->no = coln; - n->alignment = align; - return TRUE; -} - -/* - * modify_column - given a column, c, modify the width to - * contain hstart..hend. - * It returns TRUE if it does not clash with - * the next or previous column. - */ - -int html_table::modify_column (cols *c, int hstart, int hend, char align) -{ - cols *l = columns; - - while (l != NULL && l->next != c) - l = l->next; - - if ((l != NULL) && (hstart < l->right)) - return FALSE; // new column bumps into previous one - - if ((c->next != NULL) && (c->next->left < hend)) - return FALSE; // new column bumps into next one - - if (c->left > hstart) - c->left = hstart; - - if (c->right < hend) - c->right = hend; - - c->alignment = align; - - return TRUE; -} - -/* - * find_tab_column - finds the column number for position, pos. - * It searches through the list tab stops. - */ - -int html_table::find_tab_column (int pos) -{ - // remember the first column is reserved for un tabbed glyphs - return tab_stops->find_tab(pos)+1; -} - -/* - * find_column - find the column number for position, pos. - * It searches through the list of columns. - */ - -int html_table::find_column (int pos) -{ - int p=0; - cols *c; - - for (c = columns; c != NULL; c = c->next) { - if (c->left > pos) - return p; - p = c->no; - } - return p; -} - -/* - * no_columns - returns the number of table columns (rather than tabs) - */ - -int html_table::no_columns (void) -{ - int n=0; - cols *c; - - for (c = columns; c != NULL; c = c->next) - n++; - return n; -} - -/* - * is_gap - returns the gap between column, c, and the next column. - */ - -int html_table::is_gap (cols *c) -{ - if (c == NULL || c->right == 0 || c->next == NULL) - return 0; - else - return (c->next->left - c->right)*100/get_effective_linelength(); -} - -/* - * no_gaps - returns the number of table gaps between the columns - */ - -int html_table::no_gaps (void) -{ - int n=0; - cols *c; - - for (c = columns; c != NULL; c = c->next) - if (is_gap(c)) - n++; - return n; -} - -/* - * get_tab_pos - returns the, nth, tab position - */ - -int html_table::get_tab_pos (int n) -{ - return tab_stops->get_tab_pos(n); -} - -char html_table::get_tab_align (int n) -{ - return tab_stops->get_tab_align(n); -} - - -void html_table::dump_table (void) -{ - if (columns != NULL) { - cols *c; - for (c = columns; c != NULL; c = c->next) { - printf("column %d %d..%d %c\n", c->no, c->left, c->right, c->alignment); - } - } else - tab_stops->dump_tabs(); -} - -/* - * html_indent - creates an indent with indentation, ind, given - * a line length of linelength. - */ - -html_indent::html_indent (simple_output *op, int ind, int pageoffset, int linelength) -{ - table = new html_table(op, linelength); - - table->add_column(1, ind+pageoffset, linelength, 'L'); - table->add_indent(pageoffset); - in = ind; - pg = pageoffset; - ll = linelength; - is_used = FALSE; -} - -html_indent::~html_indent (void) -{ - end(); - delete table; -} - -void html_indent::begin (int space) -{ - if (! is_used) { - table->emit_table_header(space); - table->emit_col(1); - is_used = TRUE; - } -} - -void html_indent::end (void) -{ - if (is_used) - table->emit_finish_table(); - is_used = FALSE; -} - -/* - * get_reg - collects the registers as supplied during initialization. - */ - -void html_indent::get_reg (int *ind, int *pageoffset, int *linelength) -{ - *ind = in; - *pageoffset = pg; - *linelength = ll; -} diff --git a/contrib/groff/src/devices/grohtml/html-text.cc b/contrib/groff/src/devices/grohtml/html-text.cc deleted file mode 100644 index 31e4311..0000000 --- a/contrib/groff/src/devices/grohtml/html-text.cc +++ /dev/null @@ -1,964 +0,0 @@ -// -*- C++ -*- -/* Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. - * - * Gaius Mulley (gaius@glam.ac.uk) wrote html-text.cc - * - * html-text.cc - * - * provide a troff like state machine interface which - * generates html text. - */ - -/* -This file is part of groff. - -groff is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -groff is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License along -with groff; see the file COPYING. If not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "driver.h" -#include "stringclass.h" -#include "cset.h" - -#if !defined(TRUE) -# define TRUE (1==1) -#endif -#if !defined(FALSE) -# define FALSE (1==0) -#endif - - -#include "html-text.h" - -// #define DEBUGGING - -html_text::html_text (simple_output *op) : - stackptr(NULL), lastptr(NULL), out(op), space_emitted(TRUE), - current_indentation(-1), pageoffset(-1), linelength(-1), - blank_para(TRUE), start_space(FALSE) -{ -} - -html_text::~html_text () -{ - flush_text(); -} - - -#if defined(DEBUGGING) -static int debugStack = FALSE; - - -/* - * turnDebug - flip the debugStack boolean and return the new value. - */ - -static int turnDebug (void) -{ - debugStack = 1-debugStack; - return debugStack; -} - -/* - * dump_stack_element - display an element of the html stack, p. - */ - -void html_text::dump_stack_element (tag_definition *p) -{ - fprintf(stderr, " | "); - switch (p->type) { - - case P_TAG: if (p->indent == NULL) { - fprintf(stderr, "<P %s>", (char *)p->arg1); break; - } else { - fprintf(stderr, "<P %s [TABLE]>", (char *)p->arg1); break; - } - case I_TAG: fprintf(stderr, "<I>"); break; - case B_TAG: fprintf(stderr, "<B>"); break; - case SUB_TAG: fprintf(stderr, "<SUB>"); break; - case SUP_TAG: fprintf(stderr, "<SUP>"); break; - case TT_TAG: fprintf(stderr, "<TT>"); break; - case PRE_TAG: if (p->indent == NULL) { - fprintf(stderr, "<PRE>"); break; - } else { - fprintf(stderr, "<PRE [TABLE]>"); break; - } - case SMALL_TAG: fprintf(stderr, "<SMALL>"); break; - case BIG_TAG: fprintf(stderr, "<BIG>"); break; - case BREAK_TAG: fprintf(stderr, "<BREAK>"); break; - case COLOR_TAG: { - if (p->col.is_default()) - fprintf(stderr, "<COLOR (default)>"); - else { - unsigned int r, g, b; - - p->col.get_rgb(&r, &g, &b); - fprintf(stderr, "<COLOR %x %x %x>", r/0x101, g/0x101, b/0x101); - } - break; - } - default: fprintf(stderr, "unknown tag"); - } - if (p->text_emitted) - fprintf(stderr, "[t] "); -} - -/* - * dump_stack - debugging function only. - */ - -void html_text::dump_stack (void) -{ - if (debugStack) { - tag_definition *p = stackptr; - - while (p != NULL) { - dump_stack_element(p); - p = p->next; - } - } - fprintf(stderr, "\n"); - fflush(stderr); -} -#else -void html_text::dump_stack (void) {} -#endif - - -/* - * end_tag - shuts down the tag. - */ - -void html_text::end_tag (tag_definition *t) -{ - switch (t->type) { - - case I_TAG: out->put_string("</i>"); break; - case B_TAG: out->put_string("</b>"); break; - case P_TAG: out->put_string("</p>"); - if (t->indent != NULL) { - delete t->indent; - t->indent = NULL; - } - out->nl(); out->enable_newlines(FALSE); - blank_para = TRUE; break; - case SUB_TAG: out->put_string("</sub>"); break; - case SUP_TAG: out->put_string("</sup>"); break; - case TT_TAG: out->put_string("</tt>"); break; - case PRE_TAG: out->put_string("</pre>"); out->nl(); out->enable_newlines(TRUE); - blank_para = TRUE; break; - case SMALL_TAG: out->put_string("</small>"); break; - case BIG_TAG: out->put_string("</big>"); break; - case COLOR_TAG: out->put_string("</font>"); break; - - default: - error("unrecognised tag"); - } -} - -/* - * issue_tag - writes out an html tag with argument. - */ - -void html_text::issue_tag (char *tagname, char *arg) -{ - if ((arg == 0) || (strlen(arg) == 0)) { - out->put_string(tagname); - out->put_string(">"); - } else { - out->put_string(tagname); - out->put_string(" "); - out->put_string(arg); - out->put_string(">"); - } -} - -/* - * issue_color_begin - writes out an html color tag. - */ - -void html_text::issue_color_begin (color *c) -{ - unsigned int r, g, b; - char buf[6+1]; - - out->put_string("<font color=\"#"); - if (c->is_default()) - sprintf(buf, "000000"); - else { - c->get_rgb(&r, &g, &b); - // we have to scale 0..0xFFFF to 0..0xFF - sprintf(buf, "%.2X%.2X%.2X", r/0x101, g/0x101, b/0x101); - } - out->put_string(buf); - out->put_string("\">"); -} - -/* - * start_tag - starts a tag. - */ - -void html_text::start_tag (tag_definition *t) -{ - switch (t->type) { - - case I_TAG: issue_tag("<i", (char *)t->arg1); break; - case B_TAG: issue_tag("<b", (char *)t->arg1); break; - case P_TAG: if (t->indent == NULL) { - out->nl(); - issue_tag("\n<p", (char *)t->arg1); - } else { - out->nl(); - out->simple_comment("INDENTATION"); - t->indent->begin(FALSE); - start_space = FALSE; - issue_tag("<p", (char *)t->arg1); - } - - out->enable_newlines(TRUE); break; - case SUB_TAG: issue_tag("<sub", (char *)t->arg1); break; - case SUP_TAG: issue_tag("<sup", (char *)t->arg1); break; - case TT_TAG: issue_tag("<tt", (char *)t->arg1); break; - case PRE_TAG: if (t->indent != NULL) { - out->nl(); - out->simple_comment("INDENTATION"); - t->indent->begin(FALSE); - start_space = FALSE; - } - out->enable_newlines(TRUE); - out->nl(); issue_tag("<pre", (char *)t->arg1); - out->enable_newlines(FALSE); break; - case SMALL_TAG: issue_tag("<small", (char *)t->arg1); break; - case BIG_TAG: issue_tag("<big", (char *)t->arg1); break; - case BREAK_TAG: break; - case COLOR_TAG: issue_color_begin(&t->col); break; - - default: - error("unrecognised tag"); - } -} - -/* - * flush_text - flushes html tags which are outstanding on the html stack. - */ - -void html_text::flush_text (void) -{ - int notext=TRUE; - tag_definition *p=stackptr; - - while (stackptr != 0) { - notext = (notext && (! stackptr->text_emitted)); - if (! notext) { - end_tag(stackptr); - } - p = stackptr; - stackptr = stackptr->next; - free(p); - } - lastptr = NULL; -} - -/* - * is_present - returns TRUE if tag is already present on the stack. - */ - -int html_text::is_present (HTML_TAG t) -{ - tag_definition *p=stackptr; - - while (p != NULL) { - if (t == p->type) - return TRUE; - p = p->next; - } - return FALSE; -} - -extern void stop(); - -/* - * do_push - places, tag_definition, p, onto the stack - */ - -void html_text::do_push (tag_definition *p) -{ - HTML_TAG t = p->type; - -#if defined(DEBUGGING) - if (t == PRE_TAG) - stop(); - debugStack = TRUE; - fprintf(stderr, "\nentering do_push ("); - dump_stack_element(p); - fprintf(stderr, ")\n"); - dump_stack(); - fprintf(stderr, ")\n"); - fflush(stderr); -#endif - - /* - * if t is a P_TAG or PRE_TAG make sure it goes on the end of the stack. - */ - - if (((t == P_TAG) || (t == PRE_TAG)) && (lastptr != NULL)) { - /* - * store, p, at the end - */ - lastptr->next = p; - lastptr = p; - p->next = NULL; - } else { - p->next = stackptr; - if (stackptr == NULL) - lastptr = p; - stackptr = p; - } - -#if defined(DEBUGGING) - dump_stack(); - fprintf(stderr, "exiting do_push\n"); -#endif -} - -/* - * push_para - adds a new entry onto the html paragraph stack. - */ - -void html_text::push_para (HTML_TAG t, void *arg, html_indent *in) -{ - tag_definition *p=(tag_definition *)malloc(sizeof(tag_definition)); - - p->type = t; - p->arg1 = arg; - p->text_emitted = FALSE; - p->indent = in; - - if (t == PRE_TAG && is_present(PRE_TAG)) - fatal("cannot have multiple PRE_TAGs"); - - do_push(p); -} - -void html_text::push_para (HTML_TAG t) -{ - push_para(t, (void *)"", NULL); -} - -void html_text::push_para (color *c) -{ - tag_definition *p=(tag_definition *)malloc(sizeof(tag_definition)); - - p->type = COLOR_TAG; - p->arg1 = NULL; - p->col = *c; - p->text_emitted = FALSE; - p->indent = NULL; - - do_push(p); -} - -/* - * do_italic - changes to italic - */ - -void html_text::do_italic (void) -{ - if (! is_present(I_TAG)) - push_para(I_TAG); -} - -/* - * do_bold - changes to bold. - */ - -void html_text::do_bold (void) -{ - if (! is_present(B_TAG)) - push_para(B_TAG); -} - -/* - * do_tt - changes to teletype. - */ - -void html_text::do_tt (void) -{ - if ((! is_present(TT_TAG)) && (! is_present(PRE_TAG))) - push_para(TT_TAG); -} - -/* - * do_pre - changes to preformated text. - */ - -void html_text::do_pre (void) -{ - done_tt(); - if (is_present(P_TAG)) { - html_indent *i = remove_indent(P_TAG); - (void)done_para(); - if (! is_present(PRE_TAG)) - push_para(PRE_TAG, NULL, i); - } else if (! is_present(PRE_TAG)) - push_para(PRE_TAG, NULL, NULL); - dump_stack(); -} - -/* - * is_in_pre - returns TRUE if we are currently within a preformatted - * <pre> block. - */ - -int html_text::is_in_pre (void) -{ - return is_present(PRE_TAG); -} - -/* - * do_color - initiates a new color tag. - */ - -void html_text::do_color (color *c) -{ - shutdown(COLOR_TAG); // shutdown a previous color tag, if present - push_para(c); -} - -/* - * done_color - shutdown an outstanding color tag, if it exists. - */ - -void html_text::done_color (void) -{ - shutdown(COLOR_TAG); -} - -/* - * shutdown - shuts down an html tag. - */ - -char *html_text::shutdown (HTML_TAG t) -{ - char *arg=NULL; - - if (is_present(t)) { - tag_definition *p =stackptr; - tag_definition *temp =NULL; - int notext =TRUE; - - dump_stack(); - while ((stackptr != NULL) && (stackptr->type != t)) { - notext = (notext && (! stackptr->text_emitted)); - if (! notext) { - end_tag(stackptr); - } - - /* - * pop tag - */ - p = stackptr; - stackptr = stackptr->next; - if (stackptr == NULL) - lastptr = NULL; - - /* - * push tag onto temp stack - */ - p->next = temp; - temp = p; - } - - /* - * and examine stackptr - */ - if ((stackptr != NULL) && (stackptr->type == t)) { - if (stackptr->text_emitted) { - end_tag(stackptr); - } - if (t == P_TAG) { - arg = (char *)stackptr->arg1; - } - p = stackptr; - stackptr = stackptr->next; - if (stackptr == NULL) - lastptr = NULL; - if (p->indent != NULL) - delete p->indent; - free(p); - } - - /* - * and restore unaffected tags - */ - while (temp != NULL) { - if (temp->type == COLOR_TAG) - push_para(&temp->col); - else - push_para(temp->type, temp->arg1, temp->indent); - p = temp; - temp = temp->next; - free(p); - } - } - return arg; -} - -/* - * done_bold - shuts downs a bold tag. - */ - -void html_text::done_bold (void) -{ - shutdown(B_TAG); -} - -/* - * done_italic - shuts downs an italic tag. - */ - -void html_text::done_italic (void) -{ - shutdown(I_TAG); -} - -/* - * done_sup - shuts downs a sup tag. - */ - -void html_text::done_sup (void) -{ - shutdown(SUP_TAG); -} - -/* - * done_sub - shuts downs a sub tag. - */ - -void html_text::done_sub (void) -{ - shutdown(SUB_TAG); -} - -/* - * done_tt - shuts downs a tt tag. - */ - -void html_text::done_tt (void) -{ - shutdown(TT_TAG); -} - -/* - * done_pre - shuts downs a pre tag. - */ - -void html_text::done_pre (void) -{ - shutdown(PRE_TAG); -} - -/* - * done_small - shuts downs a small tag. - */ - -void html_text::done_small (void) -{ - shutdown(SMALL_TAG); -} - -/* - * done_big - shuts downs a big tag. - */ - -void html_text::done_big (void) -{ - shutdown(BIG_TAG); -} - -/* - * check_emit_text - ensures that all previous tags have been emitted (in order) - * before the text is written. - */ - -void html_text::check_emit_text (tag_definition *t) -{ - if ((t != NULL) && (! t->text_emitted)) { - check_emit_text(t->next); - t->text_emitted = TRUE; - start_tag(t); - } -} - -/* - * do_emittext - tells the class that text was written during the current tag. - */ - -void html_text::do_emittext (const char *s, int length) -{ - if ((! is_present(P_TAG)) && (! is_present(PRE_TAG))) - do_para(""); - - if (is_present(BREAK_TAG)) { - int text = remove_break(); - check_emit_text(stackptr); - if (text) { - if (is_present(PRE_TAG)) { - out->nl(); - } else { - out->put_string("<br>").nl(); - } - } - } else { - check_emit_text(stackptr); - } - out->put_string(s, length); - space_emitted = FALSE; - blank_para = FALSE; -} - -/* - * do_para - starts a new paragraph - */ - -void html_text::do_para (const char *arg, html_indent *in) -{ - if (! is_present(P_TAG)) { - if (is_present(PRE_TAG)) { - html_indent *i = remove_indent(PRE_TAG); - done_pre(); - if (i == in || in == NULL) - in = i; - else - delete i; - } - remove_sub_sup(); - push_para(P_TAG, (void *)arg, in); - space_emitted = TRUE; - } -} - -void html_text::do_para (const char *arg) -{ - do_para(arg, NULL); -} - -void html_text::do_para (simple_output *op, const char *arg1, - int indentation, int pageoffset, int linelength) -{ - html_indent *indent; - - if (indentation == 0) - indent = NULL; - else - indent = new html_indent(op, indentation, pageoffset, linelength); - do_para(arg1, indent); -} - -/* - * done_para - shuts down a paragraph tag. - */ - -char *html_text::done_para (void) -{ - space_emitted = TRUE; - return shutdown(P_TAG); -} - -/* - * remove_indent - returns the indent associated with, tag. - * The indent associated with tag is set to NULL. - */ - -html_indent *html_text::remove_indent (HTML_TAG tag) -{ - tag_definition *p=stackptr; - - while (p != NULL) { - if (tag == p->type) { - html_indent *i = p->indent; - p->indent = NULL; - return i; - } - p = p->next; - } - return NULL; -} - -/* - * do_space - issues an end of paragraph - */ - -void html_text::do_space (void) -{ - if (is_in_pre()) { - if (blank_para) - start_space = TRUE; - else { - do_emittext("", 0); - out->nl(); - } - } else { - html_indent *i = remove_indent(P_TAG); - - do_para(done_para(), i); - space_emitted = TRUE; - start_space = TRUE; - } -} - -/* - * do_break - issue a break tag. - */ - -void html_text::do_break (void) -{ - if (! is_present(PRE_TAG)) { - if (emitted_text()) { - if (! is_present(BREAK_TAG)) { - push_para(BREAK_TAG); - } - } - } - space_emitted = TRUE; -} - -/* - * do_newline - issue a newline providing that we are inside a <pre> tag. - */ - -void html_text::do_newline (void) -{ - if (is_present(PRE_TAG)) { - do_emittext("\n", 1); - space_emitted = TRUE; - } -} - -/* - * emitted_text - returns FALSE if white space has just been written. - */ - -int html_text::emitted_text (void) -{ - return !space_emitted; -} - -/* - * ever_emitted_text - returns TRUE if we have ever emitted text in this paragraph. - */ - -int html_text::ever_emitted_text (void) -{ - return !blank_para; -} - -/* - * starts_with_space - returns TRUE if we have start this paragraph with a .sp - */ - -int html_text::starts_with_space (void) -{ - return start_space; -} - -/* - * emit_space - writes a space providing that text was written beforehand. - */ - -void html_text::emit_space (void) -{ - if (space_emitted) { - if (is_present(PRE_TAG)) { - do_emittext(" ", 1); - } - } else { - out->space_or_newline(); - space_emitted = TRUE; - } -} - -/* - * remove_def - removes a definition, t, from the stack. - */ - -void html_text::remove_def (tag_definition *t) -{ - tag_definition *p = stackptr; - tag_definition *l = 0; - tag_definition *q = 0; - - while ((p != 0) && (p != t)) { - l = p; - p = p->next; - } - if ((p != 0) && (p == t)) { - if (p == stackptr) { - stackptr = stackptr->next; - if (stackptr == NULL) - lastptr = NULL; - q = stackptr; - } else if (l == 0) { - error("stack list pointers are wrong"); - } else { - l->next = p->next; - q = p->next; - if (l->next == NULL) - lastptr = l; - } - free(p); - } -} - -/* - * remove_tag - removes a tag from the stack. - */ - -void html_text::remove_tag (HTML_TAG tag) -{ - tag_definition *p = stackptr; - - while ((p != 0) && (p->type != tag)) { - p = p->next; - } - if ((p != 0) && (p->type == tag)) - remove_def(p); -} - -/* - * remove_sub_sup - removes a sub or sup tag, should either exist on the stack. - */ - -void html_text::remove_sub_sup (void) -{ - if (is_present(SUB_TAG)) { - remove_tag(SUB_TAG); - } - if (is_present(SUP_TAG)) { - remove_tag(SUP_TAG); - } - if (is_present(PRE_TAG)) { - remove_tag(PRE_TAG); - } -} - -/* - * remove_break - break tags are not balanced thus remove it once it has been emitted. - * It returns TRUE if text was emitted before the <br> was issued. - */ - -int html_text::remove_break (void) -{ - tag_definition *p = stackptr; - tag_definition *l = 0; - tag_definition *q = 0; - - while ((p != 0) && (p->type != BREAK_TAG)) { - l = p; - p = p->next; - } - if ((p != 0) && (p->type == BREAK_TAG)) { - if (p == stackptr) { - stackptr = stackptr->next; - if (stackptr == NULL) - lastptr = NULL; - q = stackptr; - } else if (l == 0) - error("stack list pointers are wrong"); - else { - l->next = p->next; - q = p->next; - if (l->next == NULL) - lastptr = l; - } - free(p); - } - /* - * now determine whether text was issued before <br> - */ - while (q != 0) { - if (q->text_emitted) - return TRUE; - else - q = q->next; - } - return FALSE; -} - -/* - * remove_para_align - removes a paragraph which has a text - * argument. If the paragraph has no text - * argument then it is left alone. - */ - -void html_text::remove_para_align (void) -{ - if (is_present(P_TAG)) { - tag_definition *p=stackptr; - - while (p != NULL) { - if (p->type == P_TAG && p->arg1 != NULL) { - html_indent *i = remove_indent(P_TAG); - done_para(); - do_para("", i); - return; - } - p = p->next; - } - } -} - -/* - * do_small - potentially inserts a <small> tag into the html stream. - * However we check for a <big> tag, if present then we terminate it. - * Otherwise a <small> tag is inserted. - */ - -void html_text::do_small (void) -{ - if (is_present(BIG_TAG)) - done_big(); - else - push_para(SMALL_TAG); -} - -/* - * do_big - is the mirror image of do_small. - */ - -void html_text::do_big (void) -{ - if (is_present(SMALL_TAG)) - done_small(); - else - push_para(BIG_TAG); -} - -/* - * do_sup - save a superscript tag on the stack of tags. - */ - -void html_text::do_sup (void) -{ - push_para(SUP_TAG); -} - -/* - * do_sub - save a subscript tag on the stack of tags. - */ - -void html_text::do_sub (void) -{ - push_para(SUB_TAG); -} - diff --git a/contrib/groff/src/devices/grohtml/output.cc b/contrib/groff/src/devices/grohtml/output.cc deleted file mode 100644 index 67d5874..0000000 --- a/contrib/groff/src/devices/grohtml/output.cc +++ /dev/null @@ -1,356 +0,0 @@ -// -*- C++ -*- -/* Copyright (C) 2000, 2001 Free Software Foundation, Inc. - * - * Gaius Mulley (gaius@glam.ac.uk) wrote output.cc - * but it owes a huge amount of ideas and raw code from - * James Clark (jjc@jclark.com) grops/ps.cc. - * - * output.cc - * - * provide the simple low level output routines needed by html.cc - */ - -/* -This file is part of groff. - -groff is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -groff is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License along -with groff; see the file COPYING. If not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "driver.h" -#include "stringclass.h" -#include "cset.h" - -#include <time.h> -#include "html.h" - -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#undef DEBUGGING -// #define DEBUGGING - -#if !defined(TRUE) -# define TRUE (1==1) -#endif -#if !defined(FALSE) -# define FALSE (1==0) -#endif - - -#if defined(DEBUGGING) -# define FPUTC(X,Y) do { fputc((X),(Y)); fputc((X), stderr); fflush(stderr); } while (0) -# define FPUTS(X,Y) do { fputs((X),(Y)); fputs((X), stderr); fflush(stderr); } while (0) -# define PUTC(X,Y) do { putc((X),(Y)); putc((X), stderr); fflush(stderr); } while (0) -#else -# define FPUTC(X,Y) do { fputc((X),(Y)); } while (0) -# define FPUTS(X,Y) do { fputs((X),(Y)); } while (0) -# define PUTC(X,Y) do { putc((X),(Y)); } while (0) -#endif - - -/* - * word - initialise a word and set next to NULL - */ - -word::word (const char *w, int n) - : next(0) -{ - s = (char *)malloc(n+1); - strncpy(s, w, n); - s[n] = (char)0; -} - -/* - * destroy word and the string copy. - */ - -word::~word () -{ - free(s); -} - -/* - * word_list - create an empty word list. - */ - -word_list::word_list () - : length(0), head(0), tail(0) -{ -} - -/* - * flush - flush a word list to a FILE, f, and return the - * length of the buffered string. - */ - -int word_list::flush (FILE *f) -{ - word *t; - int len=length; - - while (head != 0) { - t = head; - head = head->next; - FPUTS(t->s, f); - delete t; - } - head = 0; - tail = 0; - length = 0; -#if defined(DEBUGGING) - fflush(f); // just for testing -#endif - return( len ); -} - -/* - * add_word - adds a word to the outstanding word list. - */ - -void word_list::add_word (const char *s, int n) -{ - if (head == 0) { - head = new word(s, n); - tail = head; - } else { - tail->next = new word(s, n); - tail = tail->next; - } - length += n; -} - -/* - * get_length - returns the number of characters buffered - */ - -int word_list::get_length (void) -{ - return( length ); -} - -/* - * the classes and methods for simple_output manipulation - */ - -simple_output::simple_output(FILE *f, int n) -: fp(f), max_line_length(n), col(0), fixed_point(0), newlines(0) -{ -} - -simple_output &simple_output::set_file(FILE *f) -{ - if (fp) - fflush(fp); - fp = f; - return *this; -} - -simple_output &simple_output::copy_file(FILE *infp) -{ - int c; - while ((c = getc(infp)) != EOF) - PUTC(c, fp); - return *this; -} - -simple_output &simple_output::end_line() -{ - flush_last_word(); - if (col != 0) { - PUTC('\n', fp); - col = 0; - } - return *this; -} - -simple_output &simple_output::special(const char *s) -{ - return *this; -} - -simple_output &simple_output::simple_comment(const char *s) -{ - flush_last_word(); - if (col != 0) - PUTC('\n', fp); - FPUTS("<!-- ", fp); - FPUTS(s, fp); - FPUTS(" -->\n", fp); - col = 0; - return *this; -} - -simple_output &simple_output::begin_comment(const char *s) -{ - flush_last_word(); - if (col != 0) - PUTC('\n', fp); - col = 0; - put_string("<!--"); - space_or_newline(); - last_word.add_word(s, strlen(s)); - return *this; -} - -simple_output &simple_output::end_comment() -{ - flush_last_word(); - space_or_newline(); - put_string("-->").nl(); - return *this; -} - -/* - * check_newline - checks to see whether we are able to issue - * a newline and that one is needed. - */ - -simple_output &simple_output::check_newline(int n) -{ - if ((col + n + last_word.get_length() + 1 > max_line_length) && (newlines)) { - FPUTC('\n', fp); - col = last_word.flush(fp); - } - return *this; -} - -/* - * space_or_newline - will emit a newline or a space later on - * depending upon the current column. - */ - -simple_output &simple_output::space_or_newline (void) -{ - if ((col + last_word.get_length() + 1 > max_line_length) && (newlines)) { - FPUTC('\n', fp); - if (last_word.get_length() > 0) { - col = last_word.flush(fp); - } else { - col = 0; - } - } else { - if (last_word.get_length() != 0) { - if (col > 0) { - FPUTC(' ', fp); - col++; - } - col += last_word.flush(fp); - } - } - return *this; -} - -/* - * nl - writes a newline providing that we - * are not in the first column. - */ - -simple_output &simple_output::nl (void) -{ - space_or_newline(); - col += last_word.flush(fp); - if (col != 0) { - FPUTC('\n', fp); - col = 0; - } - return *this ; -} - -simple_output &simple_output::set_fixed_point(int n) -{ - assert(n >= 0 && n <= 10); - fixed_point = n; - return *this; -} - -simple_output &simple_output::put_raw_char(char c) -{ - col += last_word.flush(fp); - PUTC(c, fp); - col++; - return *this; -} - -simple_output &simple_output::put_string(const char *s, int n) -{ - last_word.add_word(s, n); - return *this; -} - -simple_output &simple_output::put_string(const char *s) -{ - last_word.add_word(s, strlen(s)); - return *this; -} - -simple_output &simple_output::put_string(const string &s) -{ - last_word.add_word(s.contents(), s.length()); - return *this; -} - -simple_output &simple_output::put_number(int n) -{ - char buf[1 + INT_DIGITS + 1]; - sprintf(buf, "%d", n); - put_string(buf); - return *this; -} - -simple_output &simple_output::put_float(double d) -{ - char buf[128]; - - sprintf(buf, "%.4f", d); - put_string(buf); - return *this; -} - -simple_output &simple_output::enable_newlines (int auto_newlines) -{ - check_newline(0); - newlines = auto_newlines; - check_newline(0); - return *this; -} - -/* - * flush_last_word - flushes the last word and adjusts the - * col position. It will insert a newline - * before the last word if allowed and if - * necessary. - */ - -void simple_output::flush_last_word (void) -{ - int len=last_word.get_length(); - - if (len > 0) { - if (newlines) { - if (col + len + 1 > max_line_length) { - FPUTS("\n", fp); - col = 0; - } else { - FPUTS(" ", fp); - col++; - } - len += last_word.flush(fp); - } else { - FPUTS(" ", fp); - col++; - col += last_word.flush(fp); - } - } -} diff --git a/contrib/groff/src/devices/grohtml/post-html.cc b/contrib/groff/src/devices/grohtml/post-html.cc deleted file mode 100644 index 4431f17..0000000 --- a/contrib/groff/src/devices/grohtml/post-html.cc +++ /dev/null @@ -1,3745 +0,0 @@ -// -*- C++ -*- -/* Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. - * - * Gaius Mulley (gaius@glam.ac.uk) wrote post-html.cc - * but it owes a huge amount of ideas and raw code from - * James Clark (jjc@jclark.com) grops/ps.cc. - */ - -/* -This file is part of groff. - -groff is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -groff is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License along -with groff; see the file COPYING. If not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "driver.h" -#include "stringclass.h" -#include "cset.h" -#include "html.h" -#include "html-text.h" -#include "html-table.h" - -#include <time.h> - -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#include <stdio.h> -#include <fcntl.h> - -extern "C" const char *Version_string; - -#if !defined(TRUE) -# define TRUE (1==1) -#endif -#if !defined(FALSE) -# define FALSE (1==0) -#endif - -#define MAX_LINE_LENGTH 60 /* maximum characters we want in a line */ -#define SIZE_INCREMENT 2 /* font size increment <big> = +2 */ -#define BASE_POINT_SIZE 10 /* 10 points is the base size ie html size 3 */ -#define CENTER_TOLERANCE 2 /* how many pixels off center will we still */ -#define ANCHOR_TEMPLATE "heading" /* if simple anchor is set we use this */ -#define UNICODE_DESC_START 0x80 /* all character entities above this are */ - /* either encoded by their glyph names or if */ - /* there is no name then we use &#nnn; */ -typedef enum {CENTERED, LEFT, RIGHT, INLINE} TAG_ALIGNMENT; -typedef enum {col_tag, tab_tag, tab0_tag, none} colType; - -#undef DEBUG_TABLES - - -/* - * prototypes - */ - -char *get_html_translation (font *f, const string &name); -int char_translate_to_html (font *f, char *buf, int buflen, unsigned char ch, int b, int and_single); - - -static int auto_links = TRUE; /* by default we enable automatic links at */ - /* top of the document. */ -static int auto_rule = TRUE; /* by default we enable an automatic rule */ - /* at the top and bottom of the document */ -static int simple_anchors = FALSE; /* default to anchors with heading text */ -static int manufacture_headings = FALSE; /* default is to use the Hn html headings, */ - /* rather than manufacture our own. */ -static color *default_background = NULL; /* has user requested initial bg color? */ - - -/* - * start with a few favorites - */ - -void stop () {} - -static int min (int a, int b) -{ - if (a < b) - return a; - else - return b; -} - -static int max (int a, int b) -{ - if (a > b) - return a; - else - return b; -} - -/* - * is_intersection - returns TRUE if range a1..a2 intersects with b1..b2 - */ - -static int is_intersection (int a1, int a2, int b1, int b2) -{ - // easier to prove NOT outside limits - return( ! ((a1 > b2) || (a2 < b1)) ); -} - -/* - * is_digit - returns TRUE if character, ch, is a digit. - */ - -static int is_digit (char ch) -{ - return( (ch >= '0') && (ch <= '9') ); -} - -/* - * the classes and methods for maintaining a list of files. - */ - -struct file { - FILE *fp; - file *next; - - file (FILE *f); -}; - -/* - * file - initialize all fields to NULL - */ - -file::file (FILE *f) - : fp(f), next(0) -{ -} - -class files { -public: - files (); - FILE *get_file (void); - void start_of_list (void); - void move_next (void); - void add_new_file (FILE *f); -private: - file *head; - file *tail; - file *ptr; -}; - -/* - * files - create an empty list of files. - */ - -files::files () - : head(0), tail(0), ptr(0) -{ -} - -/* - * get_file - returns the FILE associated with ptr. - */ - -FILE *files::get_file (void) -{ - if (ptr) { - return( ptr->fp ); - } else { - return( 0 ); - } -} - -/* - * start_of_list - reset the ptr to the start of the list. - */ - -void files::start_of_list (void) -{ - ptr = head; -} - -/* - * move_next - moves the ptr to the next element on the list. - */ - -void files::move_next (void) -{ - if (ptr != 0) - ptr = ptr->next; -} - -/* - * add_new_file - adds a new file, f, to the list. - */ - -void files::add_new_file (FILE *f) -{ - if (head == 0) { - head = new file(f); - tail = head; - } else { - tail->next = new file(f); - tail = tail->next; - } - ptr = tail; -} - -/* - * the class and methods for styles - */ - -struct style { - font *f; - int point_size; - int font_no; - int height; - int slant; - color col; - style (); - style (font *, int, int, int, int, color); - int operator == (const style &) const; - int operator != (const style &) const; -}; - -style::style() - : f(0) -{ -} - -style::style(font *p, int sz, int h, int sl, int no, color c) - : f(p), point_size(sz), font_no(no), height(h), slant(sl), col(c) -{ -} - -int style::operator==(const style &s) const -{ - return (f == s.f && point_size == s.point_size - && height == s.height && slant == s.slant && col == s.col); -} - -int style::operator!=(const style &s) const -{ - return !(*this == s); -} - -/* - * the class and methods for retaining ascii text - */ - -struct char_block { - enum { SIZE = 256 }; - char *buffer; - int used; - char_block *next; - - char_block(); - char_block::char_block(int length); -}; - -char_block::char_block() -: buffer(NULL), used(0), next(0) -{ -} - -char_block::char_block(int length) -: used(0), next(0) -{ - buffer = (char *)malloc(max(length, char_block::SIZE)); - if (buffer == NULL) - fatal("out of memory error"); -} - -class char_buffer { -public: - char_buffer(); - ~char_buffer(); - char *add_string(const char *, unsigned int); - char *add_string(const string &); -private: - char_block *head; - char_block *tail; -}; - -char_buffer::char_buffer() -: head(0), tail(0) -{ -} - -char_buffer::~char_buffer() -{ - while (head != 0) { - char_block *temp = head; - head = head->next; - delete temp; - } -} - -char *char_buffer::add_string (const char *s, unsigned int length) -{ - int i=0; - unsigned int old_used; - - if (s == NULL || length == 0) - return NULL; - - if (tail == 0) { - tail = new char_block(length+1); - head = tail; - } else { - if (tail->used + length+1 > char_block::SIZE) { - tail->next = new char_block(length+1); - tail = tail->next; - } - } - - old_used = tail->used; - do { - tail->buffer[tail->used] = s[i]; - tail->used++; - i++; - length--; - } while (length>0); - - // add terminating nul character - - tail->buffer[tail->used] = '\0'; - tail->used++; - - // and return start of new string - - return( &tail->buffer[old_used] ); -} - -char *char_buffer::add_string (const string &s) -{ - return add_string(s.contents(), s.length()); -} - -/* - * the classes and methods for maintaining glyph positions. - */ - -class text_glob { -public: - void text_glob_html (style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void text_glob_special (style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void text_glob_line (style *s, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal, - int thickness); - void text_glob_auto_image(style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void text_glob_tag (style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - - text_glob (void); - ~text_glob (void); - int is_a_line (void); - int is_a_tag (void); - int is_eol (void); - int is_auto_img (void); - int is_br (void); - int is_in (void); - int is_po (void); - int is_ti (void); - int is_ce (void); - int is_eol_ce (void); - int is_col (void); - int is_tab (void); - int is_tab0 (void); - int is_ta (void); - int is_tab_ts (void); - int is_tab_te (void); - int is_nf (void); - int is_fi (void); - int get_arg (void); - int get_tab_args (char *align); - - void remember_table (html_table *t); - html_table *get_table (void); - - style text_style; - const char *text_string; - unsigned int text_length; - int minv, minh, maxv, maxh; - int is_tag; // is this a .br, .sp, .tl etc - int is_img_auto; // image created by eqn delim - int is_special; // text has come via 'x X html:' - int is_line; // is the command a <line>? - int thickness; // the thickness of a line - html_table *tab; // table description - -private: - text_glob (style *s, char *str, int length, - int min_vertical , int min_horizontal, - int max_vertical , int max_horizontal, - bool is_troff_command, - bool is_auto_image, bool is_special_command, - bool is_a_line , int thickness); -}; - -text_glob::text_glob (style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal, - bool is_troff_command, - bool is_auto_image, bool is_special_command, - bool is_a_line, int line_thickness) - : text_style(*s), text_string(str), text_length(length), - minv(min_vertical), minh(min_horizontal), maxv(max_vertical), maxh(max_horizontal), - is_tag(is_troff_command), is_img_auto(is_auto_image), is_special(is_special_command), - is_line(is_a_line), thickness(line_thickness), tab(NULL) -{ -} - -text_glob::text_glob () - : text_string(0), text_length(0), minv(-1), minh(-1), maxv(-1), maxh(-1), - is_tag(FALSE), is_special(FALSE), is_line(FALSE), thickness(0), tab(NULL) -{ -} - -text_glob::~text_glob () -{ - if (tab != NULL) - delete tab; -} - -/* - * text_glob_html - used to place html text into the glob buffer. - */ - -void text_glob::text_glob_html (style *s, char *str, int length, - int min_vertical , int min_horizontal, - int max_vertical , int max_horizontal) -{ - text_glob *g = new text_glob(s, str, length, - min_vertical, min_horizontal, max_vertical, max_horizontal, - FALSE, FALSE, FALSE, FALSE, 0); - *this = *g; -} - -/* - * text_glob_html - used to place html specials into the glob buffer. - * This text is essentially html commands coming through - * from the macro sets, with special designated sequences of - * characters translated into html. See add_and_encode. - */ - -void text_glob::text_glob_special (style *s, char *str, int length, - int min_vertical , int min_horizontal, - int max_vertical , int max_horizontal) -{ - text_glob *g = new text_glob(s, str, length, - min_vertical, min_horizontal, max_vertical, max_horizontal, - FALSE, FALSE, TRUE, FALSE, 0); - *this = *g; -} - -/* - * text_glob_line - record horizontal draw line commands. - */ - -void text_glob::text_glob_line (style *s, - int min_vertical , int min_horizontal, - int max_vertical , int max_horizontal, - int thickness) -{ - text_glob *g = new text_glob(s, "", 0, - min_vertical, min_horizontal, max_vertical, max_horizontal, - FALSE, FALSE, FALSE, TRUE, thickness); - *this = *g; -} - -/* - * text_glob_auto_image - record the presence of a .auto-image tag command. - * Used to mark that an image has been created automatically - * by a preprocessor and (pre-grohtml/troff) combination. - * Under some circumstances images may not be created. - * (consider .EQ - * delim $$ - * .EN - * .TS - * tab(!), center; - * l!l. - * $1 over x$!recripical of x - * .TE - * - * the first auto-image marker is created via .EQ/.EN pair - * and no image is created. - * The second auto-image marker occurs at $1 over x$ - * Currently this image will not be created - * as the whole of the table is created as an image. - * (Once html tables are handled by grohtml this will change. - * Shortly this will be the case). - */ - -void text_glob::text_glob_auto_image(style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal) -{ - text_glob *g = new text_glob(s, str, length, - min_vertical, min_horizontal, max_vertical, max_horizontal, - TRUE, TRUE, FALSE, FALSE, 0); - *this = *g; -} - -/* - * text_glob_tag - records a troff tag. - */ - -void text_glob::text_glob_tag (style *s, char *str, int length, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal) -{ - text_glob *g = new text_glob(s, str, length, - min_vertical, min_horizontal, max_vertical, max_horizontal, - TRUE, FALSE, FALSE, FALSE, 0); - *this = *g; -} - -/* - * is_a_line - returns TRUE if glob should be converted into an <hr> - */ - -int text_glob::is_a_line (void) -{ - return is_line; -} - -/* - * is_a_tag - returns TRUE if glob contains a troff directive. - */ - -int text_glob::is_a_tag (void) -{ - return is_tag; -} - -/* - * is_eol - returns TRUE if glob contains the tag eol - */ - -int text_glob::is_eol (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:eol") == 0) ); -} - -/* - * is_eol_ce - returns TRUE if glob contains the tag eol.ce - */ - -int text_glob::is_eol_ce (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:eol.ce") == 0) ); -} - - -/* - * is_nf - returns TRUE if glob contains the tag .nf - */ - -int text_glob::is_nf (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:.nf") == 0) ); -} - -/* - * is_fi - returns TRUE if glob contains the tag .fi - */ - -int text_glob::is_fi (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:.fi") == 0) ); -} - -/* - * is_ce - returns TRUE if glob contains the tag .ce - */ - -int text_glob::is_ce (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:.ce") == 0) ); -} - -/* - * is_in - returns TRUE if glob contains the tag .in - */ - -int text_glob::is_in (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:.in ", strlen("html-tag:.in ")) == 0) ); -} - -/* - * is_po - returns TRUE if glob contains the tag .po - */ - -int text_glob::is_po (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:.po ", strlen("html-tag:.po ")) == 0) ); -} - -/* - * is_ti - returns TRUE if glob contains the tag .ti - */ - -int text_glob::is_ti (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:.ti ", strlen("html-tag:.ti ")) == 0) ); -} - -/* - * is_col - returns TRUE if glob contains the tag .col - */ - -int text_glob::is_col (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:.col", strlen("html-tag:.col")) == 0) ); -} - -/* - * is_tab_ts - returns TRUE if glob contains the tag .tab_ts - */ - -int text_glob::is_tab_ts (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:.tab-ts") == 0) ); -} - -/* - * is_tab_te - returns TRUE if glob contains the tag .tab_te - */ - -int text_glob::is_tab_te (void) -{ - return( is_tag && (strcmp(text_string, "html-tag:.tab-te") == 0) ); -} - -/* - * is_ta - returns TRUE if glob contains the tag .ta - */ - -int text_glob::is_ta (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:.ta ", strlen("html-tag:.ta ")) == 0) ); -} - -/* - * is_tab - returns TRUE if glob contains the tag tab - */ - -int text_glob::is_tab (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:tab ", strlen("html-tag:tab ")) == 0) ); -} - -/* - * is_tab0 - returns TRUE if glob contains the tag tab0 - */ - -int text_glob::is_tab0 (void) -{ - return( is_tag && (strncmp(text_string, "html-tag:tab0", strlen("html-tag:tab0")) == 0) ); -} - -/* - * is_auto_img - returns TRUE if the glob contains an automatically - * generated image. - */ - -int text_glob::is_auto_img (void) -{ - return is_img_auto; -} - -/* - * is_br - returns TRUE if the glob is a tag containing a .br - * or an implied .br. Note that we do not include .nf or .fi - * as grohtml will place a .br after these commands if they - * should break the line. - */ - -int text_glob::is_br (void) -{ - return( is_a_tag() && ((strcmp ("html-tag:.br", text_string) == 0) || - (strncmp("html-tag:.sp", text_string, 11) == 0) || - (strcmp ("html-tag:.ce", text_string) == 0)) ); -} - -int text_glob::get_arg (void) -{ - if (strncmp("html-tag:", text_string, strlen("html-tag:")) == 0) { - const char *p = text_string; - - while ((*p != (char)0) && (!isspace(*p))) - p++; - while ((*p != (char)0) && (isspace(*p))) - p++; - if (*p == (char)0) - return -1; - return atoi(p); - } - return -1; -} - -/* - * get_tab_args - returns the tab position and alignment of the tab tag - */ - -int text_glob::get_tab_args (char *align) -{ - if (strncmp("html-tag:", text_string, strlen("html-tag:")) == 0) { - const char *p = text_string; - - // firstly the alignment C|R|L - while ((*p != (char)0) && (!isspace(*p))) - p++; - while ((*p != (char)0) && (isspace(*p))) - p++; - *align = *p; - // now the int value - while ((*p != (char)0) && (!isspace(*p))) - p++; - while ((*p != (char)0) && (isspace(*p))) - p++; - if (*p == (char)0) - return -1; - return atoi(p); - } - return -1; -} - -/* - * remember_table - saves table, t, in the text_glob. - */ - -void text_glob::remember_table (html_table *t) -{ - tab = t; -} - -/* - * get_table - returns the stored table description. - */ - -html_table *text_glob::get_table (void) -{ - return tab; -} - -/* - * the class and methods used to construct ordered double linked lists. - * In a previous implementation we used templates via #include "ordered-list.h", - * but this does assume that all C++ compilers can handle this feature. Pragmatically - * it is safer to assume this is not the case. - */ - -struct element_list { - element_list *right; - element_list *left; - text_glob *datum; - int lineno; - int minv, minh, maxv, maxh; - - element_list (text_glob *d, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - element_list (); -}; - -element_list::element_list () - : right(0), left(0), datum(0), lineno(0), minv(-1), minh(-1), maxv(-1), maxh(-1) -{ -} - -/* - * element_list - create a list element assigning the datum and region parameters. - */ - -element_list::element_list (text_glob *in, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal) - : right(0), left(0), datum(in), lineno(line_number), - minv(min_vertical), minh(min_horizontal), maxv(max_vertical), maxh(max_horizontal) -{ -} - -class list { -public: - list (); - ~list (); - int is_less (element_list *a, element_list *b); - void add (text_glob *in, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void sub_move_right (void); - void move_right (void); - void move_left (void); - int is_empty (void); - int is_equal_to_tail (void); - int is_equal_to_head (void); - void start_from_head (void); - void start_from_tail (void); - void insert (text_glob *in); - void move_to (text_glob *in); - text_glob *move_right_get_data (void); - text_glob *move_left_get_data (void); - text_glob *get_data (void); -private: - element_list *head; - element_list *tail; - element_list *ptr; -}; - -/* - * list - construct an empty list. - */ - -list::list () - : head(0), tail(0), ptr(0) -{ -} - -/* - * ~list - destroy a complete list. - */ - -list::~list() -{ - element_list *temp=head; - - do { - temp = head; - if (temp != 0) { - head = head->right; - delete temp; - } - } while ((head != 0) && (head != tail)); -} - -/* - * is_less - returns TRUE if a is left of b if on the same line or - * if a is higher up the page than b. - */ - -int list::is_less (element_list *a, element_list *b) -{ - // was if (is_intersection(a->minv+1, a->maxv-1, b->minv+1, b->maxv-1)) { - if (a->lineno < b->lineno) { - return( TRUE ); - } else if (a->lineno > b->lineno) { - return( FALSE ); - } else if (is_intersection(a->minv, a->maxv, b->minv, b->maxv)) { - return( a->minh < b->minh ); - } else { - return( a->maxv < b->maxv ); - } -} - -/* - * add - adds a datum to the list in the order specified by the region position. - */ - -void list::add (text_glob *in, int line_number, int min_vertical, int min_horizontal, int max_vertical, int max_horizontal) -{ - // create a new list element with datum and position fields initialized - element_list *t = new element_list(in, line_number, min_vertical, min_horizontal, max_vertical, max_horizontal); - element_list *last; - - if (head == 0) { - head = t; - tail = t; - ptr = t; - t->left = t; - t->right = t; - } else { - last = tail; - - while ((last != head) && (is_less(t, last))) { - last = last->left; - } - - if (is_less(t, last)) { - t->right = last; - last->left->right = t; - t->left = last->left; - last->left = t; - // now check for a new head - if (last == head) { - head = t; - } - } else { - // add t beyond last - t->right = last->right; - t->left = last; - last->right->left = t; - last->right = t; - // now check for a new tail - if (last == tail) { - tail = t; - } - } - } -} - -/* - * sub_move_right - removes the element which is currently pointed to by ptr - * from the list and moves ptr to the right. - */ - -void list::sub_move_right (void) -{ - element_list *t=ptr->right; - - if (head == tail) { - head = 0; - if (tail != 0) { - delete tail; - } - tail = 0; - ptr = 0; - } else { - if (head == ptr) { - head = head->right; - } - if (tail == ptr) { - tail = tail->left; - } - ptr->left->right = ptr->right; - ptr->right->left = ptr->left; - ptr=t; - } -} - -/* - * start_from_head - assigns ptr to the head. - */ - -void list::start_from_head (void) -{ - ptr = head; -} - -/* - * start_from_tail - assigns ptr to the tail. - */ - -void list::start_from_tail (void) -{ - ptr = tail; -} - -/* - * is_empty - returns TRUE if the list has no elements. - */ - -int list::is_empty (void) -{ - return( head == 0 ); -} - -/* - * is_equal_to_tail - returns TRUE if the ptr equals the tail. - */ - -int list::is_equal_to_tail (void) -{ - return( ptr == tail ); -} - -/* - * is_equal_to_head - returns TRUE if the ptr equals the head. - */ - -int list::is_equal_to_head (void) -{ - return( ptr == head ); -} - -/* - * move_left - moves the ptr left. - */ - -void list::move_left (void) -{ - ptr = ptr->left; -} - -/* - * move_right - moves the ptr right. - */ - -void list::move_right (void) -{ - ptr = ptr->right; -} - -/* - * get_datum - returns the datum referenced via ptr. - */ - -text_glob* list::get_data (void) -{ - return( ptr->datum ); -} - -/* - * move_right_get_data - returns the datum referenced via ptr and moves - * ptr right. - */ - -text_glob* list::move_right_get_data (void) -{ - ptr = ptr->right; - if (ptr == head) { - return( 0 ); - } else { - return( ptr->datum ); - } -} - -/* - * move_left_get_data - returns the datum referenced via ptr and moves - * ptr right. - */ - -text_glob* list::move_left_get_data (void) -{ - ptr = ptr->left; - if (ptr == tail) { - return( 0 ); - } else { - return( ptr->datum ); - } -} - -/* - * insert - inserts data after the current position. - */ - -void list::insert (text_glob *in) -{ - if (is_empty()) - fatal("list must not be empty if we are inserting data"); - else { - if (ptr == 0) - ptr = head; - - element_list *t = new element_list(in, ptr->lineno, ptr->minv, ptr->minh, ptr->maxv, ptr->maxh); - if (ptr == tail) - tail = t; - ptr->right->left = t; - t->right = ptr->right; - ptr->right = t; - t->left = ptr; - } -} - -/* - * move_to - moves the current position to the point where data, in, exists. - * This is an expensive method and should be used sparingly. - */ - -void list::move_to (text_glob *in) -{ - ptr = head; - while (ptr != tail && ptr->datum != in) - ptr = ptr->right; -} - -/* - * page class and methods - */ - -class page { -public: - page (void); - void add (style *s, const string &str, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void add_tag (style *s, const string &str, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void add_and_encode (style *s, const string &str, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal); - void add_line (style *s, - int line_number, - int x1, int y1, int x2, int y2, - int thickness); - void insert_tag (const string &str); - void dump_page (void); // debugging method - - // and the data - - list glyphs; // position of glyphs and specials on page - char_buffer buffer; // all characters for this page -}; - -page::page() -{ -} - -/* - * insert_tag - inserts a tag after the current position. - */ - -void page::insert_tag (const string &str) -{ - if (str.length() > 0) { - text_glob *g=new text_glob(); - text_glob *f=glyphs.get_data(); - g->text_glob_tag(&f->text_style, buffer.add_string(str), str.length(), - f->minv, f->minh, f->maxv, f->maxh); - glyphs.insert(g); - } -} - -/* - * add - add html text to the list of glyphs. - */ - -void page::add (style *s, const string &str, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal) -{ - if (str.length() > 0) { - text_glob *g=new text_glob(); - g->text_glob_html(s, buffer.add_string(str), str.length(), - min_vertical, min_horizontal, max_vertical, max_horizontal); - glyphs.add(g, line_number, min_vertical, min_horizontal, max_vertical, max_horizontal); - } -} - -/* - * add_tag - adds a troff tag, for example: .tl .sp .br - */ - -void page::add_tag (style *s, const string &str, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal) -{ - if (str.length() > 0) { - text_glob *g; - - if (strncmp((str+'\0').contents(), "html-tag:.auto-image", 20) == 0) { - g = new text_glob(); - g->text_glob_auto_image(s, buffer.add_string(str), str.length(), - min_vertical, min_horizontal, max_vertical, max_horizontal); - } else { - g = new text_glob(); - g->text_glob_tag(s, buffer.add_string(str), str.length(), - min_vertical, min_horizontal, max_vertical, max_horizontal); - } - glyphs.add(g, line_number, min_vertical, min_horizontal, max_vertical, max_horizontal); - } -} - -/* - * add_line - adds the <line> primitive providing that y1==y2 - */ - -void page::add_line (style *s, - int line_number, - int x1, int y1, int x2, int y2, - int thickness) -{ - if (y1 == y2) { - text_glob *g = new text_glob(); - g->text_glob_line(s, - min(y1, y2), min(x1, y2), max(y1, y2), max(x1, x2), - thickness); - glyphs.add(g, line_number, min(y1, y2), min(x1, y2), max(y1, y2), max(x1, x2)); - } -} - -/* - * to_unicode - returns a unicode translation of int, ch. - */ - -static char *to_unicode (unsigned int ch) -{ - static char buf[30]; - - sprintf(buf, "&#%u;", ch); - return buf; -} - -/* - * add_and_encode - adds a special string to the page, it translates the string - * into html glyphs. The special string will have come from x X html: - * and can contain troff character encodings which appear as - * \(char\). A sequence of \\ represents \. - * So for example we can write: - * "cost = \(Po\)3.00 file = \\foo\\bar" - * which is translated into: - * "cost = £3.00 file = \foo\bar" - */ - -void page::add_and_encode (style *s, const string &str, - int line_number, - int min_vertical, int min_horizontal, - int max_vertical, int max_horizontal) -{ - string html_string; - char *html_glyph; - int i=0; - - if (s->f == NULL) - return; - while (i < str.length()) { - if ((i+1<str.length()) && (str.substring(i, 2) == string("\\("))) { - // start of escape - i += 2; // move over \( - int a = i; - while ((i+1<str.length()) && (str.substring(i, 2) != string("\\)"))) { - i++; - } - int n = i; - if ((i+1<str.length()) && (str.substring(i, 2) == string("\\)"))) - i++; - else - n = -1; - if (n > 0) { - string troff_charname = str.substring(a, n-a); - html_glyph = get_html_translation(s->f, troff_charname); - if (html_glyph) - html_string += html_glyph; - else { - int index=s->f->name_to_index((troff_charname + '\0').contents()); - - if (s->f->contains(index) && (index != 0)) - html_string += s->f->get_code(index); - } - } - } else - html_string += str[i]; - i++; - } - if (html_string.length() > 0) { - text_glob *g=new text_glob(); - g->text_glob_special(s, buffer.add_string(html_string), html_string.length(), - min_vertical, min_horizontal, max_vertical, max_horizontal); - glyphs.add(g, line_number, min_vertical, min_horizontal, max_vertical, max_horizontal); - } -} - -/* - * dump_page - dump the page contents for debugging purposes. - */ - -void page::dump_page(void) -{ -#if defined(DEBUG_TABLES) - text_glob *old_pos = glyphs.get_data(); - text_glob *g; - - printf("\n<!--\n"); - printf("\n\ndebugging start\n"); - glyphs.start_from_head(); - do { - g = glyphs.get_data(); - if (g->is_tab_ts()) { - printf("\n\n"); - if (g->get_table() != NULL) - g->get_table()->dump_table(); - } - printf("%s ", g->text_string); - if (g->is_tab_te()) - printf("\n\n"); - glyphs.move_right(); - } while (! glyphs.is_equal_to_head()); - glyphs.move_to(old_pos); - printf("\ndebugging end\n\n"); - printf("\n-->\n"); - fflush(stdout); -#endif -} - -/* - * font classes and methods - */ - -class html_font : public font { - html_font(const char *); -public: - int encoding_index; - char *encoding; - char *reencoded_name; - ~html_font(); - static html_font *load_html_font(const char *); -}; - -html_font *html_font::load_html_font(const char *s) -{ - html_font *f = new html_font(s); - if (!f->load()) { - delete f; - return 0; - } - return f; -} - -html_font::html_font(const char *nm) -: font(nm) -{ -} - -html_font::~html_font() -{ -} - -/* - * a simple class to contain the header to this document - */ - -class title_desc { -public: - title_desc (); - ~title_desc (); - - int has_been_written; - int has_been_found; - int with_h1; - string text; -}; - - -title_desc::title_desc () - : has_been_written(FALSE), has_been_found(FALSE), with_h1(FALSE) -{ -} - -title_desc::~title_desc () -{ -} - -class header_desc { -public: - header_desc (); - ~header_desc (); - - int no_of_headings; // how many headings have we found? - char_buffer headings; // all the headings used in the document - list headers; // list of headers built from .NH and .SH - int header_level; // current header level - int written_header; // have we written the header yet? - string header_buffer; // current header text - - void write_headings (FILE *f, int force); -}; - -header_desc::header_desc () - : no_of_headings(0), header_level(2), written_header(0) -{ -} - -header_desc::~header_desc () -{ -} - -/* - * write_headings - emits a list of links for the headings in this document - */ - -void header_desc::write_headings (FILE *f, int force) -{ - text_glob *g; - - if (auto_links || force) { - if (! headers.is_empty()) { - int h=1; - - headers.start_from_head(); - do { - g = headers.get_data(); - fputs("<a href=\"#", f); - if (simple_anchors) { - string buffer(ANCHOR_TEMPLATE); - - buffer += as_string(h); - buffer += '\0'; - fprintf(f, buffer.contents()); - } else - fputs(g->text_string, f); - h++; - fputs("\">", f); - fputs(g->text_string, f); - fputs("</a><br>\n", f); - headers.move_right(); - } while (! headers.is_equal_to_head()); - fputs("\n", f); - } - } -} - -class html_printer : public printer { - files file_list; - simple_output html; - int res; - int space_char_index; - int space_width; - int no_of_printed_pages; - int paper_length; - string sbuf; - int sbuf_start_hpos; - int sbuf_vpos; - int sbuf_end_hpos; - int sbuf_prev_hpos; - int sbuf_kern; - style sbuf_style; - int last_sbuf_length; - int overstrike_detected; - style output_style; - int output_hpos; - int output_vpos; - int output_vpos_max; - int output_draw_point_size; - int line_thickness; - int output_line_thickness; - unsigned char output_space_code; - char *inside_font_style; - int page_number; - title_desc title; - header_desc header; - int header_indent; - int supress_sub_sup; - int cutoff_heading; - page *page_contents; - html_text *current_paragraph; - html_indent *indent; - html_table *table; - int end_center; - int end_tempindent; - TAG_ALIGNMENT next_tag; - int fill_on; - int max_linelength; - int linelength; - int pageoffset; - int indentation; - int prev_indent; - int pointsize; - int vertical_spacing; - int line_number; - color *background; - - void flush_sbuf (); - void set_style (const style &); - void set_space_code (unsigned char c); - void do_exec (char *, const environment *); - void do_import (char *, const environment *); - void do_def (char *, const environment *); - void do_mdef (char *, const environment *); - void do_file (char *, const environment *); - void set_line_thickness (const environment *); - void terminate_current_font (void); - void flush_font (void); - void add_to_sbuf (int index, const string &s); - void write_title (int in_head); - int sbuf_continuation (int index, const char *name, const environment *env, int w); - void flush_page (void); - void troff_tag (text_glob *g); - void flush_globs (void); - void emit_line (text_glob *g); - void emit_raw (text_glob *g); - void emit_html (text_glob *g); - void determine_space (text_glob *g); - void start_font (const char *name); - void end_font (const char *name); - int is_font_courier (font *f); - int is_courier_until_eol (void); - void start_size (int from, int to); - void do_font (text_glob *g); - void do_center (char *arg); - void do_break (void); - void do_eol (void); - void do_eol_ce (void); - void do_title (void); - void do_fill (int on); - void do_heading (char *arg); - void write_header (void); - void determine_header_level (int level); - void do_linelength (char *arg); - void do_pageoffset (char *arg); - void do_indentation (char *arg); - void do_tempindent (char *arg); - void do_indentedparagraph (void); - void do_verticalspacing (char *arg); - void do_pointsize (char *arg); - void do_centered_image (void); - void do_left_image (void); - void do_right_image (void); - void do_auto_image (text_glob *g, const char *filename); - void do_links (void); - void do_flush (void); - int is_in_middle (int left, int right); - void do_sup_or_sub (text_glob *g); - int start_subscript (text_glob *g); - int end_subscript (text_glob *g); - int start_superscript (text_glob *g); - int end_superscript (text_glob *g); - void outstanding_eol (int n); - int is_bold (font *f); - font *make_bold (font *f); - int overstrike (int index, const char *name, const environment *env, int w); - void do_body (void); - int next_horiz_pos (text_glob *g, int nf); - void lookahead_for_tables (void); - void insert_tab_te (void); - text_glob *insert_tab_ts (text_glob *where); - void insert_tab0_foreach_tab (void); - void insert_tab_0 (text_glob *where); - void do_indent (int in, int pageoff, int linelen); - void shutdown_table (void); - void do_tab_ts (text_glob *g); - void do_tab_te (void); - void do_col (char *s); - void do_tab (char *s); - void do_tab0 (void); - int calc_nf (text_glob *g, int nf); - void calc_po_in (text_glob *g, int nf); - void remove_tabs (void); - void remove_courier_tabs (void); - void update_min_max (colType type_of_col, int *minimum, int *maximum, text_glob *g); - void add_table_end (char *debug_string); - // ADD HERE - -public: - html_printer (); - ~html_printer (); - void set_char (int i, font *f, const environment *env, int w, const char *name); - void draw (int code, int *p, int np, const environment *env); - void begin_page (int); - void end_page (int); - void special (char *arg, const environment *env, char type); - font *make_font (const char *); - void end_of_line (); -}; - -printer *make_printer() -{ - return new html_printer; -} - -static void usage(FILE *stream); - -void html_printer::set_style(const style &sty) -{ - const char *fontname = sty.f->get_name(); - if (fontname == NULL) - fatal("no internalname specified for font"); - -#if 0 - change_font(fontname, (font::res/(72*font::sizescale))*sty.point_size); -#endif -} - -/* - * is_bold - returns TRUE if font, f, is bold. - */ - -int html_printer::is_bold (font *f) -{ - const char *fontname = f->get_name(); - return (strcmp(fontname, "B") == 0) || (strcmp(fontname, "BI") == 0); -} - -/* - * make_bold - if a bold font of, f, exists then return it. - */ - -font *html_printer::make_bold (font *f) -{ - const char *fontname = f->get_name(); - - if (strcmp(fontname, "B") == 0) - return f; - if (strcmp(fontname, "I") == 0) - return font::load_font("BI"); - if (strcmp(fontname, "BI") == 0) - return f; - return NULL; -} - -void html_printer::end_of_line() -{ - flush_sbuf(); - line_number++; -} - -/* - * emit_line - writes out a horizontal rule. - */ - -void html_printer::emit_line (text_glob *g) -{ - // --fixme-- needs to know the length in percentage - html.put_string("<hr>"); -} - -/* - * emit_raw - writes the raw html information directly to the device. - */ - -void html_printer::emit_raw (text_glob *g) -{ - do_font(g); - if (next_tag == INLINE) { - determine_space(g); - current_paragraph->do_emittext(g->text_string, g->text_length); - } else { - current_paragraph->done_para(); - switch (next_tag) { - - case CENTERED: - current_paragraph->do_para("align=center"); - break; - case LEFT: - current_paragraph->do_para(&html, "align=left", indentation, pageoffset, linelength); - break; - case RIGHT: - current_paragraph->do_para(&html, "align=right", indentation, pageoffset, linelength); - break; - default: - fatal("unknown enumeration"); - } - current_paragraph->do_emittext(g->text_string, g->text_length); - current_paragraph->done_para(); - next_tag = INLINE; - supress_sub_sup = TRUE; - if (indentation > 0) { - /* - * restore indentation - */ - int newin = indentation; - indentation = 0; - do_indent(newin, pageoffset, linelength); - } - } -} - -/* - * do_center - handle the .ce commands from troff. - */ - -void html_printer::do_center (char *arg) -{ - int n = atoi(arg); - current_paragraph->do_break(); - - if (n > 0) { - current_paragraph->done_para(); - supress_sub_sup = TRUE; - current_paragraph->do_para("align=center"); - end_center += n; - } else { - end_center = 0; - current_paragraph->remove_para_align(); - } -} - -/* - * do_centered_image - set a flag such that the next html-tag is - * placed inside a centered paragraph. - */ - -void html_printer::do_centered_image (void) -{ - next_tag = CENTERED; -} - -/* - * do_right_image - set a flag such that the next html-tag is - * placed inside a right aligned paragraph. - */ - -void html_printer::do_right_image (void) -{ - next_tag = RIGHT; -} - -/* - * do_left_image - set a flag such that the next html-tag is - * placed inside a left aligned paragraph. - */ - -void html_printer::do_left_image (void) -{ - next_tag = LEFT; -} - -/* - * exists - returns TRUE if filename exists. - */ - -static int exists (const char *filename) -{ - FILE *fp = fopen(filename, "r"); - - if (fp == 0) { - return( FALSE ); - } else { - fclose(fp); - return( TRUE ); - } -} - -/* - * generate_img_src - returns a html image tag for the filename - * providing that the image exists. - */ - -static string &generate_img_src (const char *filename) -{ - string *s = new string(""); - - while (filename && (filename[0] == ' ')) { - filename++; - } - if (exists(filename)) - *s += string("<img src=\"") + filename + "\">"; - return *s; -} - -/* - * do_auto_image - tests whether the image, indicated by filename, - * is present, if so then it emits an html image tag. - * An image tag may be passed through from pic, eqn - * but the corresponding image might not be created. - * Consider .EQ delim $$ .EN or an empty .PS .PE. - */ - -void html_printer::do_auto_image (text_glob *g, const char *filename) -{ - string buffer = generate_img_src(filename); - - if (! buffer.empty()) { - /* - * utilize emit_raw by creating a new text_glob. - */ - text_glob h = *g; - - h.text_string = buffer.contents(); - h.text_length = buffer.length(); - emit_raw(&h); - } else - next_tag = INLINE; -} - -/* - * outstanding_eol - call do_eol, n, times. - */ - -void html_printer::outstanding_eol (int n) -{ - while (n > 0) { - do_eol(); - n--; - } -} - -/* - * do_title - handle the .tl commands from troff. - */ - -void html_printer::do_title (void) -{ - text_glob *t; - int removed_from_head; - int eol_ce = 0; - - if (page_number == 1) { - int found_title_start = FALSE; - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.sub_move_right(); /* move onto next word */ - do { - t = page_contents->glyphs.get_data(); - removed_from_head = FALSE; - if (t->is_auto_img()) { - string img = generate_img_src((char *)(t->text_string + 20)); - - if (! img.empty()) { - if (found_title_start) - title.text += " "; - found_title_start = TRUE; - title.has_been_found = TRUE; - title.text += img; - } - page_contents->glyphs.sub_move_right(); /* move onto next word */ - removed_from_head = ((!page_contents->glyphs.is_empty()) && - (page_contents->glyphs.is_equal_to_head())); - } else if (t->is_eol_ce()) { - /* process the eol associated with .ce - */ - eol_ce++; - page_contents->glyphs.sub_move_right(); /* move onto next word */ - } else if (t->is_eol()) { - /* end of title found - */ - title.has_been_found = TRUE; - outstanding_eol(eol_ce); - return; - } else if (t->is_a_tag()) { - /* end of title found, but move back so that we read this tag and process it - */ - page_contents->glyphs.move_left(); /* move backwards to last word */ - title.has_been_found = TRUE; - outstanding_eol(eol_ce); - return; - } else if (found_title_start) { - title.text += " " + string(t->text_string, t->text_length); - page_contents->glyphs.sub_move_right(); /* move onto next word */ - removed_from_head = ((!page_contents->glyphs.is_empty()) && - (page_contents->glyphs.is_equal_to_head())); - } else { - title.text += string(t->text_string, t->text_length); - found_title_start = TRUE; - title.has_been_found = TRUE; - page_contents->glyphs.sub_move_right(); /* move onto next word */ - removed_from_head = ((!page_contents->glyphs.is_empty()) && - (page_contents->glyphs.is_equal_to_head())); - } - } while ((! page_contents->glyphs.is_equal_to_head()) || (removed_from_head)); - } - outstanding_eol(eol_ce); - } -} - -void html_printer::write_header (void) -{ - if (! header.header_buffer.empty()) { - if (header.header_level > 7) { - header.header_level = 7; - } - - // firstly we must terminate any font and type faces - current_paragraph->done_para(); - supress_sub_sup = TRUE; - - if (cutoff_heading+2 > header.header_level) { - // now we save the header so we can issue a list of links - header.no_of_headings++; - style st; - - text_glob *h=new text_glob(); - h->text_glob_html(&st, - header.headings.add_string(header.header_buffer), - header.header_buffer.length(), - header.no_of_headings, header.header_level, - header.no_of_headings, header.header_level); - - header.headers.add(h, - header.no_of_headings, - header.no_of_headings, header.no_of_headings, - header.no_of_headings, header.no_of_headings); // and add this header to the header list - - // lastly we generate a tag - - html.nl().put_string("<a name=\""); - if (simple_anchors) { - string buffer(ANCHOR_TEMPLATE); - - buffer += as_string(header.no_of_headings); - buffer += '\0'; - html.put_string(buffer.contents()); - } else { - html.put_string(header.header_buffer); - } - html.put_string("\"></a>").nl(); - } - - if (manufacture_headings) { - // line break before a header - if (!current_paragraph->emitted_text()) - current_paragraph->do_space(); - // user wants manufactured headings which look better than <Hn></Hn> - if (header.header_level<4) { - html.put_string("<b><font size=\"+1\">"); - html.put_string(header.header_buffer); - html.put_string("</font></b>").nl(); - } - else { - html.put_string("<b>"); - html.put_string(header.header_buffer); - html.put_string("</b>").nl(); - } - } - else { - // and now we issue the real header - html.put_string("<h"); - html.put_number(header.header_level); - html.put_string(">"); - html.put_string(header.header_buffer); - html.put_string("</h"); - html.put_number(header.header_level); - html.put_string(">").nl(); - } - - current_paragraph->do_para(&html, "", indentation, pageoffset, linelength); - } -} - -void html_printer::determine_header_level (int level) -{ - if (level == 0) { - int i; - - for (i=0; ((i<header.header_buffer.length()) - && ((header.header_buffer[i] == '.') - || is_digit(header.header_buffer[i]))) ; i++) { - if (header.header_buffer[i] == '.') { - level++; - } - } - } - header.header_level = level+1; -} - -/* - * do_heading - handle the .SH and .NH and equivalent commands from troff. - */ - -void html_printer::do_heading (char *arg) -{ - text_glob *g; - text_glob *l = 0; - int level=atoi(arg); - - header.header_buffer.clear(); - page_contents->glyphs.move_right(); - if (! page_contents->glyphs.is_equal_to_head()) { - g = page_contents->glyphs.get_data(); - do { - if (g->is_auto_img()) { - string img=generate_img_src((char *)(g->text_string + 20)); - - if (! img.empty()) { - simple_anchors = TRUE; // we cannot use full heading anchors with images - if (l != 0) - header.header_buffer += " "; - - l = g; - header.header_buffer += img; - } - } else if (! (g->is_a_line() || g->is_a_tag())) { - /* - * we ignore tags commands when constructing a heading - */ - if (l != 0) - header.header_buffer += " "; - l = g; - - header.header_buffer += string(g->text_string, g->text_length); - } - page_contents->glyphs.move_right(); - g = page_contents->glyphs.get_data(); - } while ((! page_contents->glyphs.is_equal_to_head()) && - (! g->is_br())); - } - - determine_header_level(level); - write_header(); - - // finally set the output to neutral for after the header - g = page_contents->glyphs.get_data(); - page_contents->glyphs.move_left(); // so that next time we use old g -} - -/* - * is_courier_until_eol - returns TRUE if we can see a whole line which is courier - */ - -int html_printer::is_courier_until_eol (void) -{ - text_glob *orig = page_contents->glyphs.get_data(); - int result = TRUE; - text_glob *g; - - if (! page_contents->glyphs.is_equal_to_tail()) { - page_contents->glyphs.move_right(); - do { - g = page_contents->glyphs.get_data(); - if (! g->is_a_tag() && (! is_font_courier(g->text_style.f))) - result = FALSE; - page_contents->glyphs.move_right(); - } while (result && - (! page_contents->glyphs.is_equal_to_head()) && - (! g->is_fi()) && (! g->is_eol())); - - /* - * now restore our previous position. - */ - while (page_contents->glyphs.get_data() != orig) - page_contents->glyphs.move_left(); - } - return result; -} - -/* - * do_linelength - handle the .ll command from troff. - */ - -void html_printer::do_linelength (char *arg) -{ - if (max_linelength == -1) - max_linelength = atoi(arg); - - if (fill_on) - do_indent(indentation, pageoffset, atoi(arg)); -} - -/* - * do_pageoffset - handle the .po command from troff. - */ - -void html_printer::do_pageoffset (char *arg) -{ - if (fill_on) - do_indent(indentation, atoi(arg), linelength); -} - -/* - * do_indentation - handle the .in command from troff. - */ - -void html_printer::do_indentation (char *arg) -{ - if (fill_on) - do_indent(atoi(arg), pageoffset, linelength); -} - -/* - * do_tempindent - handle the .ti command from troff. - */ - -void html_printer::do_tempindent (char *arg) -{ - if (fill_on) { - end_tempindent = 1; - prev_indent = indentation; - do_indent(atoi(arg), pageoffset, linelength); - } -} - -/* - * shutdown_table - shuts down the current table. - */ - -void html_printer::shutdown_table (void) -{ - if (table != NULL) { - current_paragraph->done_para(); - table->emit_finish_table(); - // dont delete this table as it will be deleted when we destroy the text_glob - table = NULL; - } -} - -/* - * do_indent - remember the indent parameters and if - * indent is > pageoff and indent has changed - * then we start a html table to implement the indentation. - */ - -void html_printer::do_indent (int in, int pageoff, int linelen) -{ - if ((indentation != -1) && - (pageoffset+indentation != in+pageoff)) { - - current_paragraph->done_para(); - - indentation = in; - pageoffset = pageoff; - if (linelen <= max_linelength) - linelength = linelen; - - current_paragraph->do_para(&html, "", indentation, pageoffset, max_linelength); - } -} - -/* - * do_verticalspacing - handle the .vs command from troff. - */ - -void html_printer::do_verticalspacing (char *arg) -{ - vertical_spacing = atoi(arg); -} - -/* - * do_pointsize - handle the .ps command from troff. - */ - -void html_printer::do_pointsize (char *arg) -{ - pointsize = atoi(arg); -} - -/* - * do_fill - records whether troff has requested that text be filled. - */ - -void html_printer::do_fill (int on) -{ - current_paragraph->do_break(); - output_hpos = indentation+pageoffset; - supress_sub_sup = TRUE; - - if (fill_on != on) { - if (on) - current_paragraph->do_para(""); - else - current_paragraph->do_pre(); - fill_on = on; - } -} - -/* - * do_eol - handle the end of line - */ - -void html_printer::do_eol (void) -{ - if (! fill_on) { - if (current_paragraph->ever_emitted_text()) { - current_paragraph->do_newline(); - current_paragraph->do_break(); - } - } - output_hpos = indentation+pageoffset; -} - -/* - * do_eol_ce - handle end of line specifically for a .ce - */ - -void html_printer::do_eol_ce (void) -{ - if (end_center > 0) { - if (end_center > 1) - if (current_paragraph->emitted_text()) - current_paragraph->do_break(); - - end_center--; - if (end_center == 0) { - current_paragraph->done_para(); - supress_sub_sup = TRUE; - } - } -} - -/* - * do_flush - flushes all output and tags. - */ - -void html_printer::do_flush (void) -{ - current_paragraph->done_para(); -} - -/* - * do_links - moves onto a new temporary file and sets auto_links to FALSE. - */ - -void html_printer::do_links (void) -{ - current_paragraph->done_para(); - auto_links = FALSE; /* from now on only emit under user request */ - file_list.add_new_file(xtmpfile()); - html.set_file(file_list.get_file()); -} - -/* - * do_break - handles the ".br" request and also - * undoes an outstanding ".ti" command. - */ - -void html_printer::do_break (void) -{ - current_paragraph->do_break(); - if (end_tempindent > 0) { - end_tempindent--; - if (end_tempindent == 0) - do_indent(prev_indent, pageoffset, linelength); - } - output_hpos = indentation+pageoffset; - supress_sub_sup = TRUE; -} - -/* - * do_tab_ts - start a table, which will have already been defined. - */ - -void html_printer::do_tab_ts (text_glob *g) -{ - html_table *t = g->get_table(); - - if (t != NULL) { - current_paragraph->done_pre(); - current_paragraph->done_para(); - - html.simple_comment("TABS"); - - t->set_linelength(max_linelength); - t->add_indent(pageoffset); - t->emit_table_header(FALSE); - } - - table = t; -} - -/* - * do_tab_te - finish a table. - */ - -void html_printer::do_tab_te (void) -{ - if (table) { - current_paragraph->done_para(); - table->emit_finish_table(); - } - - table = NULL; - - if (indentation > 0) { - /* - * restore indentation - */ - int newin = indentation; - indentation = 0; - do_indent(newin, pageoffset, linelength); - } -} - -/* - * do_tab - handle the "html-tag:tab" tag - */ - -void html_printer::do_tab (char *s) -{ - if (table) { - while (isspace(*s)) - s++; - s++; - int col = table->find_column(atoi(s) + pageoffset + indentation); - if (col > 0) { - current_paragraph->done_para(); - table->emit_col(col); - } - } -} - -/* - * do_tab0 - handle the "html-tag:tab0" tag - */ - -void html_printer::do_tab0 (void) -{ - if (table) { - int col = table->find_column(pageoffset+indentation); - if (col > 0) { - current_paragraph->done_para(); - table->emit_col(col); - } - } -} - -/* - * do_col - start column, s. - */ - -void html_printer::do_col (char *s) -{ - if (table) { - current_paragraph->done_para(); - table->emit_col(atoi(s)); - } -} - -/* - * troff_tag - processes the troff tag and manipulates the troff state machine. - */ - -void html_printer::troff_tag (text_glob *g) -{ - /* - * firstly skip over html-tag: - */ - char *t=(char *)g->text_string+9; - - if (g->is_eol()) { - do_eol(); - } else if (g->is_eol_ce()) { - do_eol_ce(); - } else if (strncmp(t, ".sp", 3) == 0) { - if (g->get_arg() > 0) - current_paragraph->do_space(); - else - current_paragraph->do_break(); - supress_sub_sup = TRUE; - } else if (strncmp(t, ".br", 3) == 0) { - do_break(); - } else if (strcmp(t, ".centered-image") == 0) { - do_centered_image(); - } else if (strcmp(t, ".right-image") == 0) { - do_right_image(); - } else if (strcmp(t, ".left-image") == 0) { - do_left_image(); - } else if (strncmp(t, ".auto-image", 11) == 0) { - char *a = (char *)t+11; - do_auto_image(g, a); - } else if (strncmp(t, ".ce", 3) == 0) { - char *a = (char *)t+3; - supress_sub_sup = TRUE; - do_center(a); - } else if (strncmp(t, ".tl", 3) == 0) { - supress_sub_sup = TRUE; - title.with_h1 = TRUE; - do_title(); - } else if (strncmp(t, ".html-tl", 8) == 0) { - supress_sub_sup = TRUE; - title.with_h1 = FALSE; - do_title(); - } else if (strncmp(t, ".fi", 3) == 0) { - do_fill(TRUE); - } else if (strncmp(t, ".nf", 3) == 0) { - do_fill(FALSE); - } else if ((strncmp(t, ".SH", 3) == 0) || (strncmp(t, ".NH", 3) == 0)) { - char *a = (char *)t+3; - do_heading(a); - } else if (strncmp(t, ".ll", 3) == 0) { - char *a = (char *)t+3; - do_linelength(a); - } else if (strncmp(t, ".po", 3) == 0) { - char *a = (char *)t+3; - do_pageoffset(a); - } else if (strncmp(t, ".in", 3) == 0) { - char *a = (char *)t+3; - do_indentation(a); - } else if (strncmp(t, ".ti", 3) == 0) { - char *a = (char *)t+3; - do_tempindent(a); - } else if (strncmp(t, ".vs", 3) == 0) { - char *a = (char *)t+3; - do_verticalspacing(a); - } else if (strncmp(t, ".ps", 3) == 0) { - char *a = (char *)t+3; - do_pointsize(a); - } else if (strcmp(t, ".links") == 0) { - do_links(); - } else if (strcmp(t, ".no-auto-rule") == 0) { - auto_rule = FALSE; - } else if (strcmp(t, ".tab-ts") == 0) { - do_tab_ts(g); - } else if (strcmp(t, ".tab-te") == 0) { - do_tab_te(); - } else if (strncmp(t, ".col ", 5) == 0) { - char *a = (char *)t+4; - do_col(a); - } else if (strncmp(t, "tab ", 4) == 0) { - char *a = (char *)t+3; - do_tab(a); - } else if (strncmp(t, "tab0", 4) == 0) { - do_tab0(); - } -} - -/* - * is_in_middle - returns TRUE if the positions left..right are in the center of the page. - */ - -int html_printer::is_in_middle (int left, int right) -{ - return( abs(abs(left-pageoffset) - abs(pageoffset+linelength-right)) <= CENTER_TOLERANCE ); -} - -/* - * flush_globs - runs through the text glob list and emits html. - */ - -void html_printer::flush_globs (void) -{ - text_glob *g; - - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.start_from_head(); - do { - g = page_contents->glyphs.get_data(); - - if (strcmp(g->text_string, "XXXXXXX") == 0) - stop(); - - if (g->is_a_tag()) { - troff_tag(g); - } else if (g->is_a_line()) { - emit_line(g); - } else { - emit_html(g); - } - /* - * after processing the title (and removing it) the glyph list might be empty - */ - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.move_right(); - } - } while (! page_contents->glyphs.is_equal_to_head()); - } -} - -/* - * calc_nf - calculates the _no_ format flag, given the - * text glob, g. - */ - -int html_printer::calc_nf (text_glob *g, int nf) -{ - if (g != NULL) { - if (g->is_fi()) - return FALSE; - if (g->is_nf()) - return TRUE; - } - return nf; -} - -/* - * calc_po_in - calculates the, in, po, registers - */ - -void html_printer::calc_po_in (text_glob *g, int nf) -{ - if (g->is_in()) - indentation = g->get_arg(); - else if (g->is_po()) - pageoffset = g->get_arg(); - else if (g->is_ti()) { - prev_indent = indentation; - indentation = g->get_arg(); - end_tempindent = 1; - } else if (g->is_br() && ((end_tempindent > 0) || (nf && g->is_eol()))) { - end_tempindent = 0; - indentation = prev_indent; - } -} - -/* - * next_horiz_pos - returns the next horiz position. - * -1 is returned if it doesn't exist. - */ - -int html_printer::next_horiz_pos (text_glob *g, int nf) -{ - int next = -1; - - if ((g != NULL) && (g->is_br() || (nf && g->is_eol()))) - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.move_right_get_data(); - if (g == NULL) - page_contents->glyphs.start_from_head(); - else { - next = g->minh; - page_contents->glyphs.move_left(); - } - } - return next; -} - -/* - * insert_tab_ts - inserts a tab-ts before, where. - */ - -text_glob *html_printer::insert_tab_ts (text_glob *where) -{ - text_glob *start_of_table; - text_glob *old_pos = page_contents->glyphs.get_data(); - - page_contents->glyphs.move_to(where); - page_contents->glyphs.move_left(); - page_contents->insert_tag(string("html-tag:.tab-ts")); // tab table start - page_contents->glyphs.move_right(); - start_of_table = page_contents->glyphs.get_data(); - page_contents->glyphs.move_to(old_pos); - return start_of_table; -} - -/* - * insert_tab_te - inserts a tab-te before the current position - * (it skips backwards over .sp/.br) - */ - -void html_printer::insert_tab_te (void) -{ - text_glob *g = page_contents->glyphs.get_data(); - page_contents->dump_page(); - - while (page_contents->glyphs.get_data()->is_a_tag()) - page_contents->glyphs.move_left(); - - page_contents->insert_tag(string("html-tag:.tab-te")); // tab table end - while (g != page_contents->glyphs.get_data()) - page_contents->glyphs.move_right(); - page_contents->dump_page(); -} - -/* - * insert_tab_0 - inserts a tab0 before, where. - */ - -void html_printer::insert_tab_0 (text_glob *where) -{ - text_glob *old_pos = page_contents->glyphs.get_data(); - - page_contents->glyphs.move_to(where); - page_contents->glyphs.move_left(); - page_contents->insert_tag(string("html-tag:tab0")); // tab0 start of line - page_contents->glyphs.move_right(); - page_contents->glyphs.move_to(old_pos); -} - -/* - * remove_tabs - removes the tabs tags on this line. - */ - -void html_printer::remove_tabs (void) -{ - text_glob *orig = page_contents->glyphs.get_data(); - text_glob *g; - - if (! page_contents->glyphs.is_equal_to_tail()) { - do { - g = page_contents->glyphs.get_data(); - if (g->is_tab()) { - page_contents->glyphs.sub_move_right(); - if (g == orig) - orig = page_contents->glyphs.get_data(); - } else - page_contents->glyphs.move_right(); - } while ((! page_contents->glyphs.is_equal_to_head()) && - (! g->is_eol())); - - /* - * now restore our previous position. - */ - while (page_contents->glyphs.get_data() != orig) - page_contents->glyphs.move_left(); - } -} - -void html_printer::remove_courier_tabs (void) -{ - text_glob *g; - int line_start = TRUE; - int nf = FALSE; - - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.start_from_head(); - line_start = TRUE; - do { - g = page_contents->glyphs.get_data(); - - nf = calc_nf(g, nf); - - if (line_start) { - if (line_start && nf && is_courier_until_eol()) { - remove_tabs(); - g = page_contents->glyphs.get_data(); - } - } - - line_start = g->is_br() || g->is_nf() || g->is_fi() || (nf && g->is_eol()); - page_contents->glyphs.move_right(); - } while (! page_contents->glyphs.is_equal_to_head()); - } -} - -void html_printer::insert_tab0_foreach_tab (void) -{ - text_glob *start_of_line = NULL; - text_glob *g = NULL; - int seen_tab = FALSE; - int seen_col = FALSE; - int nf = FALSE; - - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.start_from_head(); - start_of_line = page_contents->glyphs.get_data(); - do { - g = page_contents->glyphs.get_data(); - - nf = calc_nf(g, nf); - - if (g->is_tab()) - seen_tab = TRUE; - - if (g->is_col()) - seen_col = TRUE; - - if (g->is_br() || (nf && g->is_eol())) { - do { - page_contents->glyphs.move_right(); - g = page_contents->glyphs.get_data(); - nf = calc_nf(g, nf); - if (page_contents->glyphs.is_equal_to_head()) { - if (seen_tab && !seen_col) - insert_tab_0(start_of_line); - return; - } - } while (g->is_br() || (nf && g->is_eol()) || g->is_ta()); - // printf("\nstart_of_line is: %s\n", g->text_string); - if (seen_tab && !seen_col) { - insert_tab_0(start_of_line); - page_contents->glyphs.move_to(g); - } - - seen_tab = FALSE; - seen_col = FALSE; - start_of_line = g; - } - page_contents->glyphs.move_right(); - } while (! page_contents->glyphs.is_equal_to_head()); - if (seen_tab && !seen_col) - insert_tab_0(start_of_line); - - } -} - -/* - * update_min_max - updates the extent of a column, given the left and right - * extents of a glyph, g. - */ - -void html_printer::update_min_max (colType type_of_col, int *minimum, int *maximum, text_glob *g) -{ - switch (type_of_col) { - - case tab_tag: - break; - case tab0_tag: - *minimum = g->minh; - break; - case col_tag: - *minimum = g->minh; - *maximum = g->maxh; - break; - default: - break; - } -} - -/* - * add_table_end - moves left one glyph, adds a table end tag and adds a - * debugging string. - */ - -void html_printer::add_table_end (char *debug_string) -{ - page_contents->glyphs.move_left(); - insert_tab_te(); -#if defined(DEBUG_TABLES) - page_contents->insert_tag(string(debug_string)); -#endif -} - -/* - * lookahead_for_tables - checks for .col tags and inserts table start/end tags - */ - -void html_printer::lookahead_for_tables (void) -{ - text_glob *g; - text_glob *start_of_line = NULL; - text_glob *start_of_table = NULL; - text_glob *last = NULL; - colType type_of_col = none; - int left = 0; - int found_col = FALSE; - int seen_text = FALSE; - int ncol = 0; - int colmin; - int colmax; - html_table *table = new html_table(&html, -1); - const char *tab_defs = NULL; - char align = 'L'; - int nf = FALSE; - int old_pageoffset = pageoffset; - - remove_courier_tabs(); - page_contents->dump_page(); - insert_tab0_foreach_tab(); - page_contents->dump_page(); - if (! page_contents->glyphs.is_empty()) { - page_contents->glyphs.start_from_head(); - g = page_contents->glyphs.get_data(); - do { -#if defined(DEBUG_TABLES) - fprintf(stderr, " [") ; - fprintf(stderr, g->text_string) ; - fprintf(stderr, "] ") ; - fflush(stderr); - if (strcmp(g->text_string, "XXXXXXX") == 0) - stop(); -#endif - - nf = calc_nf(g, nf); - calc_po_in(g, nf); - if (g->is_col()) { - if (type_of_col == tab_tag && start_of_table != NULL) { - page_contents->glyphs.move_left(); - insert_tab_te(); - start_of_table->remember_table(table); - table = new html_table(&html, -1); - page_contents->insert_tag(string("*** TAB -> COL ***")); - if (tab_defs != NULL) - table->tab_stops->init(tab_defs); - start_of_table = NULL; - last = NULL; - } - type_of_col = col_tag; - found_col = TRUE; - ncol = g->get_arg(); - align = 'L'; - colmin = 0; - colmax = 0; - } else if (g->is_tab()) { - type_of_col = tab_tag; - colmin = g->get_tab_args(&align); - align = 'L'; // for now as 'C' and 'R' are broken - ncol = table->find_tab_column(colmin); - colmin += pageoffset + indentation; - colmax = table->get_tab_pos(ncol+1); - if (colmax > 0) - colmax += pageoffset + indentation; - } else if (g->is_tab0()) { - if (type_of_col == col_tag && start_of_table != NULL) { - page_contents->glyphs.move_left(); - insert_tab_te(); - start_of_table->remember_table(table); - table = new html_table(&html, -1); - page_contents->insert_tag(string("*** COL -> TAB ***")); - start_of_table = NULL; - last = NULL; - } - if (tab_defs != NULL) - table->tab_stops->init(tab_defs); - - type_of_col = tab0_tag; - ncol = 1; - colmin = 0; - colmax = table->get_tab_pos(2) + pageoffset + indentation; - } else if (! g->is_a_tag()) - update_min_max(type_of_col, &colmin, &colmax, g); - - if ((! g->is_a_tag()) || g->is_tab()) - seen_text = TRUE; - - if ((g->is_col() || g->is_tab() || g->is_tab0()) - && (start_of_line != NULL) && (start_of_table == NULL)) { - start_of_table = insert_tab_ts(start_of_line); - start_of_line = NULL; - seen_text = FALSE; - } else if (g->is_ce() && (start_of_table != NULL)) { - add_table_end("*** CE ***"); - start_of_table->remember_table(table); - start_of_table = NULL; - last = NULL; - } else if (g->is_ta()) { - tab_defs = g->text_string; - if (!table->tab_stops->compatible(tab_defs)) { - if (start_of_table != NULL) { - add_table_end("*** TABS ***"); - start_of_table->remember_table(table); - table = new html_table(&html, -1); - start_of_table = NULL; - type_of_col = none; - last = NULL; - } - table->tab_stops->init(tab_defs); - } - } - - if (((! g->is_a_tag()) || g->is_tab()) && (start_of_table != NULL)) { - // we are in a table and have a glyph - if ((ncol == 0) || (! table->add_column(ncol, colmin, colmax, align))) { - if (ncol == 0) - add_table_end("*** NCOL == 0 ***"); - else - add_table_end("*** CROSSED COLS ***"); - - start_of_table->remember_table(table); - table = new html_table(&html, -1); - start_of_table = NULL; - type_of_col = none; - last = NULL; - } - } - - /* - * move onto next glob, check whether we are starting a new line - */ - g = page_contents->glyphs.move_right_get_data(); - - if (g == NULL) { - if (found_col) { - page_contents->glyphs.start_from_head(); - last = g; - found_col = FALSE; - } - } else if (g->is_br() || (nf && g->is_eol())) { - do { - g = page_contents->glyphs.move_right_get_data(); - nf = calc_nf(g, nf); - } while ((g != NULL) && (g->is_br() || (nf && g->is_eol()))); - start_of_line = g; - seen_text = FALSE; - ncol = 0; - left = next_horiz_pos(g, nf); - if (found_col) - last = g; - found_col = FALSE; - } - } while ((g != NULL) && (! page_contents->glyphs.is_equal_to_head())); - -#if defined(DEBUG_TABLES) - fprintf(stderr, "finished scanning for tables\n"); -#endif - - page_contents->glyphs.start_from_head(); - if (start_of_table != NULL) { - if (last != NULL) - while (last != page_contents->glyphs.get_data()) - page_contents->glyphs.move_left(); - - insert_tab_te(); - start_of_table->remember_table(table); - table = NULL; - page_contents->insert_tag(string("*** LAST ***")); - } - } - if (table != NULL) - delete table; - - // and reset the registers - pageoffset = old_pageoffset; - indentation = 0; - prev_indent = 0; - end_tempindent = 0; -} - -void html_printer::flush_page (void) -{ - supress_sub_sup = TRUE; - flush_sbuf(); - page_contents->dump_page(); - lookahead_for_tables(); - page_contents->dump_page(); - - flush_globs(); - current_paragraph->done_para(); - - // move onto a new page - delete page_contents; -#if defined(DEBUG_TABLES) - fprintf(stderr, "\n\n*** flushed page ***\n\n"); - - html.simple_comment("new page called"); -#endif - page_contents = new page; -} - -/* - * determine_space - works out whether we need to write a space. - * If last glyph is ajoining then no space emitted. - */ - -void html_printer::determine_space (text_glob *g) -{ - if (current_paragraph->is_in_pre()) { - /* - * .nf has been specified - */ - while (output_hpos < g->minh) { - output_hpos += space_width; - current_paragraph->emit_space(); - } - } else { - if ((output_vpos != g->minv) || (output_hpos < g->minh)) { - current_paragraph->emit_space(); - } - } -} - -/* - * is_font_courier - returns TRUE if the font, f, is courier. - */ - -int html_printer::is_font_courier (font *f) -{ - if (f != 0) { - const char *fontname = f->get_name(); - - return( (fontname != 0) && (fontname[0] == 'C') ); - } - return( FALSE ); -} - -/* - * end_font - shuts down the font corresponding to fontname. - */ - -void html_printer::end_font (const char *fontname) -{ - if (strcmp(fontname, "B") == 0) { - current_paragraph->done_bold(); - } else if (strcmp(fontname, "I") == 0) { - current_paragraph->done_italic(); - } else if (strcmp(fontname, "BI") == 0) { - current_paragraph->done_bold(); - current_paragraph->done_italic(); - } else if (strcmp(fontname, "CR") == 0) { - current_paragraph->done_tt(); - } else if (strcmp(fontname, "CI") == 0) { - current_paragraph->done_italic(); - current_paragraph->done_tt(); - } else if (strcmp(fontname, "CB") == 0) { - current_paragraph->done_bold(); - current_paragraph->done_tt(); - } else if (strcmp(fontname, "CBI") == 0) { - current_paragraph->done_bold(); - current_paragraph->done_italic(); - current_paragraph->done_tt(); - } -} - -/* - * start_font - starts the font corresponding to name. - */ - -void html_printer::start_font (const char *fontname) -{ - if (strcmp(fontname, "R") == 0) { - current_paragraph->done_bold(); - current_paragraph->done_italic(); - current_paragraph->done_tt(); - } else if (strcmp(fontname, "B") == 0) { - current_paragraph->do_bold(); - } else if (strcmp(fontname, "I") == 0) { - current_paragraph->do_italic(); - } else if (strcmp(fontname, "BI") == 0) { - current_paragraph->do_bold(); - current_paragraph->do_italic(); - } else if (strcmp(fontname, "CR") == 0) { - if ((! fill_on) && (is_courier_until_eol())) { - current_paragraph->do_pre(); - } - current_paragraph->do_tt(); - } else if (strcmp(fontname, "CI") == 0) { - if ((! fill_on) && (is_courier_until_eol())) { - current_paragraph->do_pre(); - } - current_paragraph->do_tt(); - current_paragraph->do_italic(); - } else if (strcmp(fontname, "CB") == 0) { - if ((! fill_on) && (is_courier_until_eol())) { - current_paragraph->do_pre(); - } - current_paragraph->do_tt(); - current_paragraph->do_bold(); - } else if (strcmp(fontname, "CBI") == 0) { - if ((! fill_on) && (is_courier_until_eol())) { - current_paragraph->do_pre(); - } - current_paragraph->do_tt(); - current_paragraph->do_italic(); - current_paragraph->do_bold(); - } -} - -/* - * start_size - from is old font size, to is the new font size. - * The html increase <big> and <small> decrease alters the - * font size by 20%. We try and map these onto glyph sizes. - */ - -void html_printer::start_size (int from, int to) -{ - if (from < to) { - while (from < to) { - current_paragraph->do_big(); - from += SIZE_INCREMENT; - } - } else if (from > to) { - while (from > to) { - current_paragraph->do_small(); - from -= SIZE_INCREMENT; - } - } -} - -/* - * do_font - checks to see whether we need to alter the html font. - */ - -void html_printer::do_font (text_glob *g) -{ - /* - * check if the output_style.point_size has not been set yet - * this allow users to place .ps at the top of their troff files - * and grohtml can then treat the .ps value as the base font size (3) - */ - if (output_style.point_size == -1) { - output_style.point_size = pointsize; - } - - if (g->text_style.f != output_style.f) { - if (output_style.f != 0) { - end_font(output_style.f->get_name()); - } - output_style.f = g->text_style.f; - if (output_style.f != 0) { - start_font(output_style.f->get_name()); - } - } - if (output_style.point_size != g->text_style.point_size) { - do_sup_or_sub(g); - if ((output_style.point_size > 0) && - (g->text_style.point_size > 0)) { - start_size(output_style.point_size, g->text_style.point_size); - } - if (g->text_style.point_size > 0) { - output_style.point_size = g->text_style.point_size; - } - } - if (output_style.col != g->text_style.col) { - current_paragraph->done_color(); - output_style.col = g->text_style.col; - current_paragraph->do_color(&output_style.col); - } -} - -/* - * start_subscript - returns TRUE if, g, looks like a subscript start. - */ - -int html_printer::start_subscript (text_glob *g) -{ - int r = font::res; - int height = output_style.point_size*r/72; - - return( (output_style.point_size != 0) && - (output_vpos < g->minv) && - (output_vpos-height > g->maxv) && - (output_style.point_size > g->text_style.point_size) ); -} - -/* - * start_superscript - returns TRUE if, g, looks like a superscript start. - */ - -int html_printer::start_superscript (text_glob *g) -{ - int r = font::res; - int height = output_style.point_size*r/72; - - return( (output_style.point_size != 0) && - (output_vpos > g->minv) && - (output_vpos-height < g->maxv) && - (output_style.point_size > g->text_style.point_size) ); -} - -/* - * end_subscript - returns TRUE if, g, looks like the end of a subscript. - */ - -int html_printer::end_subscript (text_glob *g) -{ - int r = font::res; - int height = output_style.point_size*r/72; - - return( (output_style.point_size != 0) && - (g->minv < output_vpos) && - (output_vpos-height > g->maxv) && - (output_style.point_size < g->text_style.point_size) ); -} - -/* - * end_superscript - returns TRUE if, g, looks like the end of a superscript. - */ - -int html_printer::end_superscript (text_glob *g) -{ - int r = font::res; - int height = output_style.point_size*r/72; - - return( (output_style.point_size != 0) && - (g->minv > output_vpos) && - (output_vpos-height < g->maxv) && - (output_style.point_size < g->text_style.point_size) ); -} - -/* - * do_sup_or_sub - checks to see whether the next glyph is a subscript/superscript - * start/end and it calls the services of html-text to issue the - * appropriate tags. - */ - -void html_printer::do_sup_or_sub (text_glob *g) -{ - if (! supress_sub_sup) { - if (start_subscript(g)) { - current_paragraph->do_sub(); - } else if (start_superscript(g)) { - current_paragraph->do_sup(); - } else if (end_subscript(g)) { - current_paragraph->done_sub(); - } else if (end_superscript(g)) { - current_paragraph->done_sup(); - } - } -} - -/* - * emit_html - write out the html text - */ - -void html_printer::emit_html (text_glob *g) -{ - do_font(g); - determine_space(g); - current_paragraph->do_emittext(g->text_string, g->text_length); - output_vpos = g->minv; - output_hpos = g->maxh; - output_vpos_max = g->maxv; - supress_sub_sup = FALSE; -} - -/* - * flush_sbuf - flushes the current sbuf into the list of glyphs. - */ - -void html_printer::flush_sbuf() -{ - if (sbuf.length() > 0) { - int r=font::res; // resolution of the device - set_style(sbuf_style); - if (overstrike_detected && (! is_bold(sbuf_style.f))) { - font *bold_font = make_bold(sbuf_style.f); - if (bold_font != NULL) - sbuf_style.f = bold_font; - } - - page_contents->add(&sbuf_style, sbuf, - line_number, - sbuf_vpos-sbuf_style.point_size*r/72, sbuf_start_hpos, - sbuf_vpos , sbuf_end_hpos); - - output_hpos = sbuf_end_hpos; - output_vpos = sbuf_vpos; - last_sbuf_length = 0; - sbuf_prev_hpos = sbuf_end_hpos; - overstrike_detected = FALSE; - sbuf.clear(); - } -} - -void html_printer::set_line_thickness(const environment *env) -{ - line_thickness = env->size; -} - -void html_printer::draw(int code, int *p, int np, const environment *env) -{ - switch (code) { - - case 'l': -# if 0 - if (np == 2) { - page_contents->add_line(&sbuf_style, - line_number, - env->hpos, env->vpos, env->hpos+p[0], env->vpos+p[1], line_thickness); - } else { - error("2 arguments required for line"); - } -# endif - break; - case 't': - { - if (np == 0) { - line_thickness = -1; - } else { - // troff gratuitously adds an extra 0 - if (np != 1 && np != 2) { - error("0 or 1 argument required for thickness"); - break; - } - line_thickness = p[0]; - } - break; - } - - case 'P': - break; - case 'p': - break; - case 'E': - break; - case 'e': - break; - case 'C': - break; - case 'c': - break; - case 'a': - break; - case '~': - break; - case 'f': - break; - case 'F': - // fill with color env->fill - if (background != NULL) - delete background; - background = new color; - *background = *env->fill; - break; - - default: - error("unrecognised drawing command `%1'", char(code)); - break; - } -} - -html_printer::html_printer() -: html(0, MAX_LINE_LENGTH), - no_of_printed_pages(0), - last_sbuf_length(0), - overstrike_detected(FALSE), - output_hpos(-1), - output_vpos(-1), - output_vpos_max(-1), - line_thickness(-1), - inside_font_style(0), - page_number(0), - header_indent(-1), - supress_sub_sup(TRUE), - cutoff_heading(100), - indent(NULL), - table(NULL), - end_center(0), - end_tempindent(0), - next_tag(INLINE), - fill_on(TRUE), - max_linelength(-1), - linelength(0), - pageoffset(0), - indentation(0), - prev_indent(0), - pointsize(0), - line_number(0), - background(default_background) -{ - file_list.add_new_file(xtmpfile()); - html.set_file(file_list.get_file()); - if (font::hor != 24) - fatal("horizontal resolution must be 24"); - if (font::vert != 40) - fatal("vertical resolution must be 40"); -#if 0 - // should be sorted html.. - if (font::res % (font::sizescale*72) != 0) - fatal("res must be a multiple of 72*sizescale"); -#endif - int r = font::res; - int point = 0; - while (r % 10 == 0) { - r /= 10; - point++; - } - res = r; - html.set_fixed_point(point); - space_char_index = font::name_to_index("space"); - space_width = font::hor; - paper_length = font::paperlength; - linelength = font::res*13/2; - if (paper_length == 0) - paper_length = 11*font::res; - - page_contents = new page(); -} - -/* - * add_to_sbuf - adds character code or name to the sbuf. - */ - -void html_printer::add_to_sbuf (int index, const string &s) -{ - if (sbuf_style.f == NULL) - return; - - char *html_glyph = NULL; - unsigned int code = sbuf_style.f->get_code(index); - - if (s.empty()) { - if (sbuf_style.f->contains(index)) - html_glyph = (char *)sbuf_style.f->get_special_device_encoding(index); - else - html_glyph = NULL; - - if ((html_glyph == NULL) && (code >= UNICODE_DESC_START)) - html_glyph = to_unicode(code); - } else - html_glyph = get_html_translation(sbuf_style.f, s); - - last_sbuf_length = sbuf.length(); - if (html_glyph == NULL) - sbuf += ((char)code); - else - sbuf += html_glyph; -} - -int html_printer::sbuf_continuation (int index, const char *name, - const environment *env, int w) -{ - /* - * lets see whether the glyph is closer to the end of sbuf - */ - if ((sbuf_end_hpos == env->hpos) - || ((sbuf_prev_hpos < sbuf_end_hpos) - && (env->hpos < sbuf_end_hpos) - && ((sbuf_end_hpos-env->hpos < env->hpos-sbuf_prev_hpos)))) { - add_to_sbuf(index, name); - sbuf_prev_hpos = sbuf_end_hpos; - sbuf_end_hpos += w + sbuf_kern; - return TRUE; - } else { - if ((env->hpos >= sbuf_end_hpos) && - ((sbuf_kern == 0) || (sbuf_end_hpos - sbuf_kern != env->hpos))) { - /* - * lets see whether a space is needed or not - */ - - if (env->hpos-sbuf_end_hpos < space_width) { - add_to_sbuf(index, name); - sbuf_prev_hpos = sbuf_end_hpos; - sbuf_end_hpos = env->hpos + w; - return TRUE; - } - } - } - return FALSE ; -} - -/* - * get_html_translation - given the position of the character and its name - * return the device encoding for such character. - */ - -char *get_html_translation (font *f, const string &name) -{ - int index; - - if ((f == 0) || name.empty()) - return NULL; - else { - index = f->name_to_index((char *)(name + '\0').contents()); - if (index == 0) { - error("character `%s' not found", (name + '\0').contents()); - return NULL; - } else - if (f->contains(index)) - return (char *)f->get_special_device_encoding(index); - else - return NULL; - } -} - -/* - * overstrike - returns TRUE if the glyph (i, name) is going to overstrike - * a previous glyph in sbuf. - * If TRUE the font is changed to bold and the previous sbuf - * is flushed. - */ - -int html_printer::overstrike(int index, const char *name, const environment *env, int w) -{ - if ((env->hpos < sbuf_end_hpos) - || ((sbuf_kern != 0) && (sbuf_end_hpos - sbuf_kern < env->hpos))) { - /* - * at this point we have detected an overlap - */ - if (overstrike_detected) { - /* already detected, remove previous glyph and use this glyph */ - sbuf.set_length(last_sbuf_length); - add_to_sbuf(index, name); - sbuf_end_hpos = env->hpos + w; - return TRUE; - } else { - /* first time we have detected an overstrike in the sbuf */ - sbuf.set_length(last_sbuf_length); /* remove previous glyph */ - if (! is_bold(sbuf_style.f)) - flush_sbuf(); - overstrike_detected = TRUE; - add_to_sbuf(index, name); - sbuf_end_hpos = env->hpos + w; - return TRUE; - } - } - return FALSE ; -} - -/* - * set_char - adds a character into the sbuf if it is a continuation with the previous - * word otherwise flush the current sbuf and add character anew. - */ - -void html_printer::set_char(int i, font *f, const environment *env, int w, const char *name) -{ - style sty(f, env->size, env->height, env->slant, env->fontno, *env->col); - if (sty.slant != 0) { - if (sty.slant > 80 || sty.slant < -80) { - error("silly slant `%1' degrees", sty.slant); - sty.slant = 0; - } - } - if (((! sbuf.empty()) && (sty == sbuf_style) && (sbuf_vpos == env->vpos)) - && (sbuf_continuation(i, name, env, w) || overstrike(i, name, env, w))) - return; - - flush_sbuf(); - add_to_sbuf(i, name); - sbuf_end_hpos = env->hpos + w; - sbuf_start_hpos = env->hpos; - sbuf_prev_hpos = env->hpos; - sbuf_vpos = env->vpos; - sbuf_style = sty; - sbuf_kern = 0; -} - -/* - * write_title - writes the title to this document - */ - -void html_printer::write_title (int in_head) -{ - if (title.has_been_found) { - if (in_head) { - html.put_string("<title>"); - html.put_string(title.text); - html.put_string("</title>").nl().nl(); - } else { - title.has_been_written = TRUE; - if (title.with_h1) { - html.put_string("<h1 align=center>"); - html.put_string(title.text); - html.put_string("</h1>").nl().nl(); - } - } - } else if (in_head) { - // place empty title tags to help conform to `tidy' - html.put_string("<title></title>").nl(); - } -} - -/* - * write_rule - emits a html rule tag, if the auto_rule boolean is true. - */ - -static void write_rule (void) -{ - if (auto_rule) - fputs("<hr>\n", stdout); -} - -void html_printer::begin_page(int n) -{ - page_number = n; -#if defined(DEBUGGING) - html.begin_comment("Page: ").put_string(i_to_a(page_number)).end_comment();; -#endif - no_of_printed_pages++; - - output_style.f = 0; - output_style.point_size= -1; - output_space_code = 32; - output_draw_point_size = -1; - output_line_thickness = -1; - output_hpos = -1; - output_vpos = -1; - output_vpos_max = -1; - current_paragraph = new html_text(&html); - do_indent(indentation, pageoffset, linelength); - current_paragraph->do_para(""); -} - -void html_printer::end_page(int) -{ - flush_sbuf(); - flush_page(); -} - -font *html_printer::make_font(const char *nm) -{ - return html_font::load_html_font(nm); -} - -void html_printer::do_body (void) -{ - if (background == NULL) - fputs("<body>\n\n", stdout); - else { - unsigned int r, g, b; - char buf[6+1]; - - background->get_rgb(&r, &g, &b); - // we have to scale 0..0xFFFF to 0..0xFF - sprintf(buf, "%.2X%.2X%.2X", r/0x101, g/0x101, b/0x101); - - fputs("<body bgcolor=\"#", stdout); - fputs(buf, stdout); - fputs("\">\n\n", stdout); - } -} - -html_printer::~html_printer() -{ -#ifdef LONG_FOR_TIME_T - long t; -#else - time_t t; -#endif - - current_paragraph->flush_text(); - html.end_line(); - html.set_file(stdout); - html.begin_comment("Creator : ") - .put_string("groff ") - .put_string("version ") - .put_string(Version_string) - .end_comment(); - - t = time(0); - html.begin_comment("CreationDate: ") - .put_string(ctime(&t), strlen(ctime(&t))-1) - .end_comment(); - - /* - * 'HTML: The definitive guide', O'Reilly, p47. advises against specifying - * the dtd. - */ - // fputs("<!doctype html public \"-//IETF//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n", stdout); - fputs("<html>\n", stdout); - fputs("<head>\n", stdout); - fputs("<meta name=\"generator\" content=\"groff -Thtml, see www.gnu.org\">\n", stdout); - fputs("<meta name=\"Content-Style\" content=\"text/css\">\n", stdout); - write_title(TRUE); - fputs("</head>\n", stdout); - do_body(); - - write_title(FALSE); - header.write_headings(stdout, FALSE); - write_rule(); -#if defined(DEBUGGING) - html.begin_comment("Total number of pages: ").put_string(i_to_a(no_of_printed_pages)).end_comment(); -#endif - html.end_line(); - html.end_line(); - /* - * now run through the file list copying each temporary file in turn and emitting the links. - */ - file_list.start_of_list(); - while (file_list.get_file() != 0) { - if (fseek(file_list.get_file(), 0L, 0) < 0) - fatal("fseek on temporary file failed"); - html.copy_file(file_list.get_file()); - fclose(file_list.get_file()); - file_list.move_next(); - if (file_list.get_file() != 0) - header.write_headings(stdout, TRUE); - } - write_rule(); - fputs("</body>\n", stdout); - fputs("</html>\n", stdout); -} - -/* - * special - handle all x X requests from troff. For post-html they allow users - * to pass raw html commands, turn auto linked headings off/on and - * also allow troff to emit tags to indicate when a: .br, .sp etc occurs. - */ - -void html_printer::special(char *s, const environment *env, char type) -{ - if (type != 'p') - return; - if (s != 0) { - flush_sbuf(); - if (env->fontno >= 0) { - style sty(get_font_from_index(env->fontno), env->size, env->height, - env->slant, env->fontno, *env->col); - sbuf_style = sty; - } - - if (strncmp(s, "html:", 5) == 0) { - int r=font::res; /* resolution of the device */ - font *f=sbuf_style.f; - - if (f == NULL) { - int found=FALSE; - - f = font::load_font("TR", &found); - } - - /* - * need to pass rest of string through to html output during flush - */ - page_contents->add_and_encode(&sbuf_style, string(&s[5]), - line_number, - env->vpos-env->size*r/72, env->hpos, - env->vpos , env->hpos); - - /* - * assume that the html command has no width, if it does then hopefully troff - * will have fudged this in a macro by requesting that the formatting move right by - * the appropriate amount. - */ - } else if (strncmp(s, "index:", 6) == 0) { - cutoff_heading = atoi(&s[6]); - } else if (strncmp(s, "html-tag:", 9) == 0) { - int r=font::res; /* resolution of the device */ - - page_contents->add_tag(&sbuf_style, string(s), - line_number, - env->vpos-env->size*r/72, env->hpos, - env->vpos , env->hpos); - } - } -} - -int main(int argc, char **argv) -{ - program_name = argv[0]; - static char stderr_buf[BUFSIZ]; - setbuf(stderr, stderr_buf); - int c; - static const struct option long_options[] = { - { "help", no_argument, 0, CHAR_MAX + 1 }, - { "version", no_argument, 0, 'v' }, - { NULL, 0, 0, 0 } - }; - while ((c = getopt_long(argc, argv, "a:g:o:i:I:D:F:vbdhlrnp", long_options, NULL)) - != EOF) - switch(c) { - case 'v': - printf("GNU post-grohtml (groff) version %s\n", Version_string); - exit(0); - break; - case 'a': - /* text antialiasing bits - handled by pre-html */ - break; - case 'g': - /* graphic antialiasing bits - handled by pre-html */ - break; - case 'b': - // set background color to white - default_background = new color; - default_background->set_gray(color::MAX_COLOR_VAL); - break; - case 'F': - font::command_line_font_dir(optarg); - break; - case 'l': - auto_links = FALSE; - break; - case 'r': - auto_rule = FALSE; - break; - case 'd': - /* handled by pre-html */ - break; - case 'h': - /* do not use the Hn headings of html, but manufacture our own */ - manufacture_headings = TRUE; - break; - case 'o': - /* handled by pre-html */ - break; - case 'p': - /* handled by pre-html */ - break; - case 'i': - /* handled by pre-html */ - break; - case 'I': - /* handled by pre-html */ - break; - case 'D': - /* handled by pre-html */ - break; - case 'n': - simple_anchors = TRUE; - break; - case CHAR_MAX + 1: // --help - usage(stdout); - exit(0); - break; - case '?': - usage(stderr); - exit(1); - break; - default: - assert(0); - } - if (optind >= argc) { - do_file("-"); - } else { - for (int i = optind; i < argc; i++) - do_file(argv[i]); - } - delete pr; - return 0; -} - -static void usage(FILE *stream) -{ - fprintf(stream, "usage: %s [-vblnh] [-D dir] [-I image_stem] [-F dir] [files ...]\n", - program_name); -} |