diff options
Diffstat (limited to 'usr.bin/indent/io.c')
| -rw-r--r-- | usr.bin/indent/io.c | 667 |
1 files changed, 667 insertions, 0 deletions
diff --git a/usr.bin/indent/io.c b/usr.bin/indent/io.c new file mode 100644 index 0000000..4a3db83 --- /dev/null +++ b/usr.bin/indent/io.c @@ -0,0 +1,667 @@ +/* + * Copyright (c) 1985 Sun Microsystems, Inc. + * Copyright (c) 1980, 1993 + * The Regents of the University of California. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <ctype.h> +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "indent_globs.h" +#include "indent.h" + +int comment_open; +static int paren_target; +static int pad_output(int current, int target); + +void +dump_line(void) +{ /* dump_line is the routine that actually + * effects the printing of the new source. It + * prints the label section, followed by the + * code section with the appropriate nesting + * level, followed by any comments */ + int cur_col, + target_col = 1; + static int not_first_line; + + if (ps.procname[0]) { + if (troff) { + if (comment_open) { + comment_open = 0; + fprintf(output, ".*/\n"); + } + fprintf(output, ".Pr \"%s\"\n", ps.procname); + } + ps.ind_level = 0; + ps.procname[0] = 0; + } + if (s_code == e_code && s_lab == e_lab && s_com == e_com) { + if (suppress_blanklines > 0) + suppress_blanklines--; + else { + ps.bl_line = true; + n_real_blanklines++; + } + } + else if (!inhibit_formatting) { + suppress_blanklines = 0; + ps.bl_line = false; + if (prefix_blankline_requested && not_first_line) { + if (swallow_optional_blanklines) { + if (n_real_blanklines == 1) + n_real_blanklines = 0; + } + else { + if (n_real_blanklines == 0) + n_real_blanklines = 1; + } + } + while (--n_real_blanklines >= 0) + putc('\n', output); + n_real_blanklines = 0; + if (ps.ind_level == 0) + ps.ind_stmt = 0; /* this is a class A kludge. dont do + * additional statement indentation if we are + * at bracket level 0 */ + + if (e_lab != s_lab || e_code != s_code) + ++code_lines; /* keep count of lines with code */ + + + if (e_lab != s_lab) { /* print lab, if any */ + if (comment_open) { + comment_open = 0; + fprintf(output, ".*/\n"); + } + while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) + e_lab--; + cur_col = pad_output(1, compute_label_target()); + if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0 + || strncmp(s_lab, "#endif", 6) == 0)) { + char *s = s_lab; + if (e_lab[-1] == '\n') e_lab--; + do putc(*s++, output); + while (s < e_lab && 'a' <= *s && *s<='z'); + while ((*s == ' ' || *s == '\t') && s < e_lab) + s++; + if (s < e_lab) + fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */", + (int)(e_lab - s), s); + } + else fprintf(output, "%.*s", (int)(e_lab - s_lab), s_lab); + cur_col = count_spaces(cur_col, s_lab); + } + else + cur_col = 1; /* there is no label section */ + + ps.pcase = false; + + if (s_code != e_code) { /* print code section, if any */ + char *p; + + if (comment_open) { + comment_open = 0; + fprintf(output, ".*/\n"); + } + target_col = compute_code_target(); + { + int i; + + for (i = 0; i < ps.p_l_follow; i++) + if (ps.paren_indents[i] >= 0) + ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); + } + cur_col = pad_output(cur_col, target_col); + for (p = s_code; p < e_code; p++) + if (*p == (char) 0200) + fprintf(output, "%d", target_col * 7); + else + putc(*p, output); + cur_col = count_spaces(cur_col, s_code); + } + if (s_com != e_com) { + if (troff) { + int all_here = 0; + char *p; + + if (e_com[-1] == '/' && e_com[-2] == '*') + e_com -= 2, all_here++; + while (e_com > s_com && e_com[-1] == ' ') + e_com--; + *e_com = 0; + p = s_com; + while (*p == ' ') + p++; + if (p[0] == '/' && p[1] == '*') + p += 2, all_here++; + else if (p[0] == '*') + p += p[1] == '/' ? 2 : 1; + while (*p == ' ') + p++; + if (*p == 0) + goto inhibit_newline; + if (comment_open < 2 && ps.box_com) { + comment_open = 0; + fprintf(output, ".*/\n"); + } + if (comment_open == 0) { + if ('a' <= *p && *p <= 'z') + *p = *p + 'A' - 'a'; + if (e_com - p < 50 && all_here == 2) { + char *follow = p; + fprintf(output, "\n.nr C! \\w\1"); + while (follow < e_com) { + switch (*follow) { + case '\n': + putc(' ', output); + case 1: + break; + case '\\': + putc('\\', output); + default: + putc(*follow, output); + } + follow++; + } + putc(1, output); + } + fprintf(output, "\n./* %dp %d %dp\n", + ps.com_col * 7, + (s_code != e_code || s_lab != e_lab) - ps.box_com, + target_col * 7); + } + comment_open = 1 + ps.box_com; + while (*p) { + if (*p == BACKSLASH) + putc(BACKSLASH, output); + putc(*p++, output); + } + } + else { /* print comment, if any */ + int target = ps.com_col; + char *com_st = s_com; + + target += ps.comment_delta; + while (*com_st == '\t') + com_st++, target += 8; /* ? */ + while (target <= 0) + if (*com_st == ' ') + target++, com_st++; + else if (*com_st == '\t') + target = ((target - 1) & ~7) + 9, com_st++; + else + target = 1; + if (cur_col > target) { /* if comment can't fit on this line, + * put it on next line */ + putc('\n', output); + cur_col = 1; + ++ps.out_lines; + } + while (e_com > com_st && isspace(e_com[-1])) + e_com--; + cur_col = pad_output(cur_col, target); + if (!ps.box_com) { + if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) { + if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1) + com_st[1] = '*'; + else + fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); + } + } + fwrite(com_st, e_com - com_st, 1, output); + ps.comment_delta = ps.n_comment_delta; + cur_col = count_spaces(cur_col, com_st); + ++ps.com_lines; /* count lines with comments */ + } + } + if (ps.use_ff) + putc('\014', output); + else + putc('\n', output); +inhibit_newline: + ++ps.out_lines; + if (ps.just_saw_decl == 1 && blanklines_after_declarations) { + prefix_blankline_requested = 1; + ps.just_saw_decl = 0; + } + else + prefix_blankline_requested = postfix_blankline_requested; + postfix_blankline_requested = 0; + } + ps.decl_on_line = ps.in_decl; /* if we are in the middle of a + * declaration, remember that fact for + * proper comment indentation */ + ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be + * indented if we have not + * completed this stmt and if + * we are not in the middle of + * a declaration */ + ps.use_ff = false; + ps.dumped_decl_indent = 0; + *(e_lab = s_lab) = '\0'; /* reset buffers */ + *(e_code = s_code) = '\0'; + *(e_com = s_com) = '\0'; + ps.ind_level = ps.i_l_follow; + ps.paren_level = ps.p_l_follow; + paren_target = -ps.paren_indents[ps.paren_level - 1]; + not_first_line = 1; +} + +int +compute_code_target(void) +{ + int target_col = ps.ind_size * ps.ind_level + 1; + + if (ps.paren_level) + if (!lineup_to_parens) + target_col += continuation_indent + * (2 * continuation_indent == ps.ind_size ? 1 : ps.paren_level); + else { + int w; + int t = paren_target; + + if ((w = count_spaces(t, s_code) - max_col) > 0 + && count_spaces(target_col, s_code) <= max_col) { + t -= w + 1; + if (t > target_col) + target_col = t; + } + else + target_col = t; + } + else if (ps.ind_stmt) + target_col += continuation_indent; + return target_col; +} + +int +compute_label_target(void) +{ + return + ps.pcase ? (int) (case_ind * ps.ind_size) + 1 + : *s_lab == '#' ? 1 + : ps.ind_size * (ps.ind_level - label_offset) + 1; +} + + +/* + * Copyright (C) 1976 by the Board of Trustees of the University of Illinois + * + * All rights reserved + * + * + * NAME: fill_buffer + * + * FUNCTION: Reads one block of input into input_buffer + * + * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A + * Willcox of CAC Added check for switch back to partly full input + * buffer from temporary buffer + * + */ +void +fill_buffer(void) +{ /* this routine reads stuff from the input */ + char *p; + int i; + FILE *f = input; + + if (bp_save != 0) { /* there is a partly filled input buffer left */ + buf_ptr = bp_save; /* dont read anything, just switch buffers */ + buf_end = be_save; + bp_save = be_save = 0; + if (buf_ptr < buf_end) + return; /* only return if there is really something in + * this buffer */ + } + for (p = in_buffer;;) { + if (p >= in_buffer_limit) { + int size = (in_buffer_limit - in_buffer) * 2 + 10; + int offset = p - in_buffer; + in_buffer = realloc(in_buffer, size); + if (in_buffer == NULL) + errx(1, "input line too long"); + p = in_buffer + offset; + in_buffer_limit = in_buffer + size - 2; + } + if ((i = getc(f)) == EOF) { + *p++ = ' '; + *p++ = '\n'; + had_eof = true; + break; + } + *p++ = i; + if (i == '\n') + break; + } + buf_ptr = in_buffer; + buf_end = p; + if (p[-2] == '/' && p[-3] == '*') { + if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) + fill_buffer(); /* flush indent error message */ + else { + int com = 0; + + p = in_buffer; + while (*p == ' ' || *p == '\t') + p++; + if (*p == '/' && p[1] == '*') { + p += 2; + while (*p == ' ' || *p == '\t') + p++; + if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' + && p[4] == 'N' && p[5] == 'T') { + p += 6; + while (*p == ' ' || *p == '\t') + p++; + if (*p == '*') + com = 1; + else if (*p == 'O') { + if (*++p == 'N') + p++, com = 1; + else if (*p == 'F' && *++p == 'F') + p++, com = 2; + } + while (*p == ' ' || *p == '\t') + p++; + if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { + if (s_com != e_com || s_lab != e_lab || s_code != e_code) + dump_line(); + if (!(inhibit_formatting = com - 1)) { + n_real_blanklines = 0; + postfix_blankline_requested = 0; + prefix_blankline_requested = 0; + suppress_blanklines = 1; + } + } + } + } + } + } + if (inhibit_formatting) { + p = in_buffer; + do + putc(*p, output); + while (*p++ != '\n'); + } +} + +/* + * Copyright (C) 1976 by the Board of Trustees of the University of Illinois + * + * All rights reserved + * + * + * NAME: pad_output + * + * FUNCTION: Writes tabs and spaces to move the current column up to the desired + * position. + * + * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. + * + * PARAMETERS: current integer The current column target + * nteger The desired column + * + * RETURNS: Integer value of the new column. (If current >= target, no action is + * taken, and current is returned. + * + * GLOBALS: None + * + * CALLS: write (sys) + * + * CALLED BY: dump_line + * + * HISTORY: initial coding November 1976 D A Willcox of CAC + * + */ +static int +pad_output(int current, int target) + /* writes tabs and blanks (if necessary) to + * get the current output position up to the + * target column */ + /* current: the current column value */ + /* target: position we want it at */ +{ + int curr; /* internal column pointer */ + int tcur; + + if (troff) + fprintf(output, "\\h'|%dp'", (target - 1) * 7); + else { + if (current >= target) + return (current); /* line is already long enough */ + curr = current; + if (use_tabs) { + while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { + putc('\t', output); + curr = tcur; + } + } + while (curr++ < target) + putc(' ', output); /* pad with final blanks */ + } + return (target); +} + +/* + * Copyright (C) 1976 by the Board of Trustees of the University of Illinois + * + * All rights reserved + * + * + * NAME: count_spaces + * + * FUNCTION: Find out where printing of a given string will leave the current + * character position on output. + * + * ALGORITHM: Run thru input string and add appropriate values to current + * position. + * + * RETURNS: Integer value of position after printing "buffer" starting in column + * "current". + * + * HISTORY: initial coding November 1976 D A Willcox of CAC + * + */ +int +count_spaces(int current, char *buffer) +/* + * this routine figures out where the character position will be after + * printing the text in buffer starting at column "current" + */ +{ + char *buf; /* used to look thru buffer */ + int cur; /* current character counter */ + + cur = current; + + for (buf = buffer; *buf != '\0'; ++buf) { + switch (*buf) { + + case '\n': + case 014: /* form feed */ + cur = 1; + break; + + case '\t': + cur = ((cur - 1) & tabmask) + tabsize + 1; + break; + + case 010: /* backspace */ + --cur; + break; + + default: + ++cur; + break; + } /* end of switch */ + } /* end of for loop */ + return (cur); +} + +void +diag4(int level, const char *msg, int a, int b) +{ + if (level) + found_err = 1; + if (output == stdout) { + fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); + fprintf(stdout, msg, a, b); + fprintf(stdout, " */\n"); + } + else { + fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); + fprintf(stderr, msg, a, b); + fprintf(stderr, "\n"); + } +} + +void +diag3(int level, const char *msg, int a) +{ + if (level) + found_err = 1; + if (output == stdout) { + fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); + fprintf(stdout, msg, a); + fprintf(stdout, " */\n"); + } + else { + fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); + fprintf(stderr, msg, a); + fprintf(stderr, "\n"); + } +} + +void +diag2(int level, const char *msg) +{ + if (level) + found_err = 1; + if (output == stdout) { + fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); + fprintf(stdout, "%s", msg); + fprintf(stdout, " */\n"); + } + else { + fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); + fprintf(stderr, "%s", msg); + fprintf(stderr, "\n"); + } +} + +void +writefdef(struct fstate *f, int nm) +{ + fprintf(output, ".ds f%c %s\n.nr s%c %d\n", + nm, f->font, nm, f->size); +} + +char * +chfont(struct fstate *of, struct fstate *nf, char *s) +{ + if (of->font[0] != nf->font[0] + || of->font[1] != nf->font[1]) { + *s++ = '\\'; + *s++ = 'f'; + if (nf->font[1]) { + *s++ = '('; + *s++ = nf->font[0]; + *s++ = nf->font[1]; + } + else + *s++ = nf->font[0]; + } + if (nf->size != of->size) { + *s++ = '\\'; + *s++ = 's'; + if (nf->size < of->size) { + *s++ = '-'; + *s++ = '0' + of->size - nf->size; + } + else { + *s++ = '+'; + *s++ = '0' + nf->size - of->size; + } + } + return s; +} + +void +parsefont(struct fstate *f, const char *s0) +{ + const char *s = s0; + int sizedelta = 0; + + bzero(f, sizeof *f); + while (*s) { + if (isdigit(*s)) + f->size = f->size * 10 + *s - '0'; + else if (isupper(*s)) + if (f->font[0]) + f->font[1] = *s; + else + f->font[0] = *s; + else if (*s == 'c') + f->allcaps = 1; + else if (*s == '+') + sizedelta++; + else if (*s == '-') + sizedelta--; + else { + errx(1, "bad font specification: %s", s0); + } + s++; + } + if (f->font[0] == 0) + f->font[0] = 'R'; + if (bodyf.size == 0) + bodyf.size = 11; + if (f->size == 0) + f->size = bodyf.size + sizedelta; + else if (sizedelta > 0) + f->size += bodyf.size; + else + f->size = bodyf.size - f->size; +} |
