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author | uqs <uqs@FreeBSD.org> | 2012-10-19 22:21:01 +0000 |
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committer | uqs <uqs@FreeBSD.org> | 2012-10-19 22:21:01 +0000 |
commit | bdec3cb5a747bba9c264cfc079075a9cdd270b9b (patch) | |
tree | f3e4c243809ab9802585681d5a07885f772eb5b0 /contrib/mdocml/term_ps.c | |
parent | 3362252a56bf0d1c15907a461e1692760af910c7 (diff) | |
parent | c2dfbbd38125b2ba3608eb48ca3b5e2e23f819df (diff) | |
download | FreeBSD-src-bdec3cb5a747bba9c264cfc079075a9cdd270b9b.zip FreeBSD-src-bdec3cb5a747bba9c264cfc079075a9cdd270b9b.tar.gz |
Merge mandoc from vendor into contrib and provide the necessary Makefile glue.
It's not yet connected to the build.
Diffstat (limited to 'contrib/mdocml/term_ps.c')
-rw-r--r-- | contrib/mdocml/term_ps.c | 1185 |
1 files changed, 1185 insertions, 0 deletions
diff --git a/contrib/mdocml/term_ps.c b/contrib/mdocml/term_ps.c new file mode 100644 index 0000000..e8a9068 --- /dev/null +++ b/contrib/mdocml/term_ps.c @@ -0,0 +1,1185 @@ +/* $Id: term_ps.c,v 1.54 2011/10/16 12:20:34 schwarze Exp $ */ +/* + * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <sys/types.h> + +#include <assert.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +#include "mandoc.h" +#include "out.h" +#include "main.h" +#include "term.h" + +/* These work the buffer used by the header and footer. */ +#define PS_BUFSLOP 128 + +/* Convert PostScript point "x" to an AFM unit. */ +#define PNT2AFM(p, x) /* LINTED */ \ + (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) + +/* Convert an AFM unit "x" to a PostScript points */ +#define AFM2PNT(p, x) /* LINTED */ \ + ((double)(x) / (1000.0 / (double)(p)->ps->scale)) + +struct glyph { + unsigned short wx; /* WX in AFM */ +}; + +struct font { + const char *name; /* FontName in AFM */ +#define MAXCHAR 95 /* total characters we can handle */ + struct glyph gly[MAXCHAR]; /* glyph metrics */ +}; + +struct termp_ps { + int flags; +#define PS_INLINE (1 << 0) /* we're in a word */ +#define PS_MARGINS (1 << 1) /* we're in the margins */ +#define PS_NEWPAGE (1 << 2) /* new page, no words yet */ + size_t pscol; /* visible column (AFM units) */ + size_t psrow; /* visible row (AFM units) */ + char *psmarg; /* margin buf */ + size_t psmargsz; /* margin buf size */ + size_t psmargcur; /* cur index in margin buf */ + char last; /* character buffer */ + enum termfont lastf; /* last set font */ + size_t scale; /* font scaling factor */ + size_t pages; /* number of pages shown */ + size_t lineheight; /* line height (AFM units) */ + size_t top; /* body top (AFM units) */ + size_t bottom; /* body bottom (AFM units) */ + size_t height; /* page height (AFM units */ + size_t width; /* page width (AFM units) */ + size_t left; /* body left (AFM units) */ + size_t header; /* header pos (AFM units) */ + size_t footer; /* footer pos (AFM units) */ + size_t pdfbytes; /* current output byte */ + size_t pdflastpg; /* byte of last page mark */ + size_t pdfbody; /* start of body object */ + size_t *pdfobjs; /* table of object offsets */ + size_t pdfobjsz; /* size of pdfobjs */ +}; + +static double ps_hspan(const struct termp *, + const struct roffsu *); +static size_t ps_width(const struct termp *, int); +static void ps_advance(struct termp *, size_t); +static void ps_begin(struct termp *); +static void ps_closepage(struct termp *); +static void ps_end(struct termp *); +static void ps_endline(struct termp *); +static void ps_fclose(struct termp *); +static void ps_growbuf(struct termp *, size_t); +static void ps_letter(struct termp *, int); +static void ps_pclose(struct termp *); +static void ps_pletter(struct termp *, int); +static void ps_printf(struct termp *, const char *, ...); +static void ps_putchar(struct termp *, char); +static void ps_setfont(struct termp *, enum termfont); +static struct termp *pspdf_alloc(char *); +static void pdf_obj(struct termp *, size_t); + +/* + * We define, for the time being, three fonts: bold, oblique/italic, and + * normal (roman). The following table hard-codes the font metrics for + * ASCII, i.e., 32--127. + */ + +static const struct font fonts[TERMFONT__MAX] = { + { "Times-Roman", { + { 250 }, + { 333 }, + { 408 }, + { 500 }, + { 500 }, + { 833 }, + { 778 }, + { 333 }, + { 333 }, + { 333 }, + { 500 }, + { 564 }, + { 250 }, + { 333 }, + { 250 }, + { 278 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 278 }, + { 278 }, + { 564 }, + { 564 }, + { 564 }, + { 444 }, + { 921 }, + { 722 }, + { 667 }, + { 667 }, + { 722 }, + { 611 }, + { 556 }, + { 722 }, + { 722 }, + { 333 }, + { 389 }, + { 722 }, + { 611 }, + { 889 }, + { 722 }, + { 722 }, + { 556 }, + { 722 }, + { 667 }, + { 556 }, + { 611 }, + { 722 }, + { 722 }, + { 944 }, + { 722 }, + { 722 }, + { 611 }, + { 333 }, + { 278 }, + { 333 }, + { 469 }, + { 500 }, + { 333 }, + { 444 }, + { 500 }, + { 444 }, + { 500}, + { 444}, + { 333}, + { 500}, + { 500}, + { 278}, + { 278}, + { 500}, + { 278}, + { 778}, + { 500}, + { 500}, + { 500}, + { 500}, + { 333}, + { 389}, + { 278}, + { 500}, + { 500}, + { 722}, + { 500}, + { 500}, + { 444}, + { 480}, + { 200}, + { 480}, + { 541}, + } }, + { "Times-Bold", { + { 250 }, + { 333 }, + { 555 }, + { 500 }, + { 500 }, + { 1000 }, + { 833 }, + { 333 }, + { 333 }, + { 333 }, + { 500 }, + { 570 }, + { 250 }, + { 333 }, + { 250 }, + { 278 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 333 }, + { 333 }, + { 570 }, + { 570 }, + { 570 }, + { 500 }, + { 930 }, + { 722 }, + { 667 }, + { 722 }, + { 722 }, + { 667 }, + { 611 }, + { 778 }, + { 778 }, + { 389 }, + { 500 }, + { 778 }, + { 667 }, + { 944 }, + { 722 }, + { 778 }, + { 611 }, + { 778 }, + { 722 }, + { 556 }, + { 667 }, + { 722 }, + { 722 }, + { 1000 }, + { 722 }, + { 722 }, + { 667 }, + { 333 }, + { 278 }, + { 333 }, + { 581 }, + { 500 }, + { 333 }, + { 500 }, + { 556 }, + { 444 }, + { 556 }, + { 444 }, + { 333 }, + { 500 }, + { 556 }, + { 278 }, + { 333 }, + { 556 }, + { 278 }, + { 833 }, + { 556 }, + { 500 }, + { 556 }, + { 556 }, + { 444 }, + { 389 }, + { 333 }, + { 556 }, + { 500 }, + { 722 }, + { 500 }, + { 500 }, + { 444 }, + { 394 }, + { 220 }, + { 394 }, + { 520 }, + } }, + { "Times-Italic", { + { 250 }, + { 333 }, + { 420 }, + { 500 }, + { 500 }, + { 833 }, + { 778 }, + { 333 }, + { 333 }, + { 333 }, + { 500 }, + { 675 }, + { 250 }, + { 333 }, + { 250 }, + { 278 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 333 }, + { 333 }, + { 675 }, + { 675 }, + { 675 }, + { 500 }, + { 920 }, + { 611 }, + { 611 }, + { 667 }, + { 722 }, + { 611 }, + { 611 }, + { 722 }, + { 722 }, + { 333 }, + { 444 }, + { 667 }, + { 556 }, + { 833 }, + { 667 }, + { 722 }, + { 611 }, + { 722 }, + { 611 }, + { 500 }, + { 556 }, + { 722 }, + { 611 }, + { 833 }, + { 611 }, + { 556 }, + { 556 }, + { 389 }, + { 278 }, + { 389 }, + { 422 }, + { 500 }, + { 333 }, + { 500 }, + { 500 }, + { 444 }, + { 500 }, + { 444 }, + { 278 }, + { 500 }, + { 500 }, + { 278 }, + { 278 }, + { 444 }, + { 278 }, + { 722 }, + { 500 }, + { 500 }, + { 500 }, + { 500 }, + { 389 }, + { 389 }, + { 278 }, + { 500 }, + { 444 }, + { 667 }, + { 444 }, + { 444 }, + { 389 }, + { 400 }, + { 275 }, + { 400 }, + { 541 }, + } }, +}; + +void * +pdf_alloc(char *outopts) +{ + struct termp *p; + + if (NULL != (p = pspdf_alloc(outopts))) + p->type = TERMTYPE_PDF; + + return(p); +} + +void * +ps_alloc(char *outopts) +{ + struct termp *p; + + if (NULL != (p = pspdf_alloc(outopts))) + p->type = TERMTYPE_PS; + + return(p); +} + +static struct termp * +pspdf_alloc(char *outopts) +{ + struct termp *p; + unsigned int pagex, pagey; + size_t marginx, marginy, lineheight; + const char *toks[2]; + const char *pp; + char *v; + + p = mandoc_calloc(1, sizeof(struct termp)); + p->enc = TERMENC_ASCII; + p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); + + p->advance = ps_advance; + p->begin = ps_begin; + p->end = ps_end; + p->endline = ps_endline; + p->hspan = ps_hspan; + p->letter = ps_letter; + p->width = ps_width; + + toks[0] = "paper"; + toks[1] = NULL; + + pp = NULL; + + while (outopts && *outopts) + switch (getsubopt(&outopts, UNCONST(toks), &v)) { + case (0): + pp = v; + break; + default: + break; + } + + /* Default to US letter (millimetres). */ + + pagex = 216; + pagey = 279; + + /* + * The ISO-269 paper sizes can be calculated automatically, but + * it would require bringing in -lm for pow() and I'd rather not + * do that. So just do it the easy way for now. Since this + * only happens once, I'm not terribly concerned. + */ + + if (pp && strcasecmp(pp, "letter")) { + if (0 == strcasecmp(pp, "a3")) { + pagex = 297; + pagey = 420; + } else if (0 == strcasecmp(pp, "a4")) { + pagex = 210; + pagey = 297; + } else if (0 == strcasecmp(pp, "a5")) { + pagex = 148; + pagey = 210; + } else if (0 == strcasecmp(pp, "legal")) { + pagex = 216; + pagey = 356; + } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) + fprintf(stderr, "%s: Unknown paper\n", pp); + } + + /* + * This MUST be defined before any PNT2AFM or AFM2PNT + * calculations occur. + */ + + p->ps->scale = 11; + + /* Remember millimetres -> AFM units. */ + + pagex = PNT2AFM(p, ((double)pagex * 2.834)); + pagey = PNT2AFM(p, ((double)pagey * 2.834)); + + /* Margins are 1/9 the page x and y. */ + + marginx = /* LINTED */ + (size_t)((double)pagex / 9.0); + marginy = /* LINTED */ + (size_t)((double)pagey / 9.0); + + /* Line-height is 1.4em. */ + + lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); + + p->ps->width = (size_t)pagex; + p->ps->height = (size_t)pagey; + p->ps->header = pagey - (marginy / 2) - (lineheight / 2); + p->ps->top = pagey - marginy; + p->ps->footer = (marginy / 2) - (lineheight / 2); + p->ps->bottom = marginy; + p->ps->left = marginx; + p->ps->lineheight = lineheight; + + p->defrmargin = pagex - (marginx * 2); + return(p); +} + + +void +pspdf_free(void *arg) +{ + struct termp *p; + + p = (struct termp *)arg; + + if (p->ps->psmarg) + free(p->ps->psmarg); + if (p->ps->pdfobjs) + free(p->ps->pdfobjs); + + free(p->ps); + term_free(p); +} + + +static void +ps_printf(struct termp *p, const char *fmt, ...) +{ + va_list ap; + int pos, len; + + va_start(ap, fmt); + + /* + * If we're running in regular mode, then pipe directly into + * vprintf(). If we're processing margins, then push the data + * into our growable margin buffer. + */ + + if ( ! (PS_MARGINS & p->ps->flags)) { + len = vprintf(fmt, ap); + va_end(ap); + p->ps->pdfbytes += /* LINTED */ + len < 0 ? 0 : (size_t)len; + return; + } + + /* + * XXX: I assume that the in-margin print won't exceed + * PS_BUFSLOP (128 bytes), which is reasonable but still an + * assumption that will cause pukeage if it's not the case. + */ + + ps_growbuf(p, PS_BUFSLOP); + + pos = (int)p->ps->psmargcur; + vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); + + va_end(ap); + + p->ps->psmargcur = strlen(p->ps->psmarg); +} + + +static void +ps_putchar(struct termp *p, char c) +{ + int pos; + + /* See ps_printf(). */ + + if ( ! (PS_MARGINS & p->ps->flags)) { + /* LINTED */ + putchar(c); + p->ps->pdfbytes++; + return; + } + + ps_growbuf(p, 2); + + pos = (int)p->ps->psmargcur++; + p->ps->psmarg[pos++] = c; + p->ps->psmarg[pos] = '\0'; +} + + +static void +pdf_obj(struct termp *p, size_t obj) +{ + + assert(obj > 0); + + if ((obj - 1) >= p->ps->pdfobjsz) { + p->ps->pdfobjsz = obj + 128; + p->ps->pdfobjs = realloc + (p->ps->pdfobjs, + p->ps->pdfobjsz * sizeof(size_t)); + if (NULL == p->ps->pdfobjs) { + perror(NULL); + exit((int)MANDOCLEVEL_SYSERR); + } + } + + p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; + ps_printf(p, "%zu 0 obj\n", obj); +} + + +static void +ps_closepage(struct termp *p) +{ + int i; + size_t len, base; + + /* + * Close out a page that we've already flushed to output. In + * PostScript, we simply note that the page must be showed. In + * PDF, we must now create the Length, Resource, and Page node + * for the page contents. + */ + + assert(p->ps->psmarg && p->ps->psmarg[0]); + ps_printf(p, "%s", p->ps->psmarg); + + if (TERMTYPE_PS != p->type) { + ps_printf(p, "ET\n"); + + len = p->ps->pdfbytes - p->ps->pdflastpg; + base = p->ps->pages * 4 + p->ps->pdfbody; + + ps_printf(p, "endstream\nendobj\n"); + + /* Length of content. */ + pdf_obj(p, base + 1); + ps_printf(p, "%zu\nendobj\n", len); + + /* Resource for content. */ + pdf_obj(p, base + 2); + ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); + ps_printf(p, "/Font <<\n"); + for (i = 0; i < (int)TERMFONT__MAX; i++) + ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); + ps_printf(p, ">>\n>>\n"); + + /* Page node. */ + pdf_obj(p, base + 3); + ps_printf(p, "<<\n"); + ps_printf(p, "/Type /Page\n"); + ps_printf(p, "/Parent 2 0 R\n"); + ps_printf(p, "/Resources %zu 0 R\n", base + 2); + ps_printf(p, "/Contents %zu 0 R\n", base); + ps_printf(p, ">>\nendobj\n"); + } else + ps_printf(p, "showpage\n"); + + p->ps->pages++; + p->ps->psrow = p->ps->top; + assert( ! (PS_NEWPAGE & p->ps->flags)); + p->ps->flags |= PS_NEWPAGE; +} + + +/* ARGSUSED */ +static void +ps_end(struct termp *p) +{ + size_t i, xref, base; + + /* + * At the end of the file, do one last showpage. This is the + * same behaviour as groff(1) and works for multiple pages as + * well as just one. + */ + + if ( ! (PS_NEWPAGE & p->ps->flags)) { + assert(0 == p->ps->flags); + assert('\0' == p->ps->last); + ps_closepage(p); + } + + if (TERMTYPE_PS == p->type) { + ps_printf(p, "%%%%Trailer\n"); + ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); + ps_printf(p, "%%%%EOF\n"); + return; + } + + pdf_obj(p, 2); + ps_printf(p, "<<\n/Type /Pages\n"); + ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", + (size_t)AFM2PNT(p, p->ps->width), + (size_t)AFM2PNT(p, p->ps->height)); + + ps_printf(p, "/Count %zu\n", p->ps->pages); + ps_printf(p, "/Kids ["); + + for (i = 0; i < p->ps->pages; i++) + ps_printf(p, " %zu 0 R", i * 4 + + p->ps->pdfbody + 3); + + base = (p->ps->pages - 1) * 4 + + p->ps->pdfbody + 4; + + ps_printf(p, "]\n>>\nendobj\n"); + pdf_obj(p, base); + ps_printf(p, "<<\n"); + ps_printf(p, "/Type /Catalog\n"); + ps_printf(p, "/Pages 2 0 R\n"); + ps_printf(p, ">>\n"); + xref = p->ps->pdfbytes; + ps_printf(p, "xref\n"); + ps_printf(p, "0 %zu\n", base + 1); + ps_printf(p, "0000000000 65535 f \n"); + + for (i = 0; i < base; i++) + ps_printf(p, "%.10zu 00000 n \n", + p->ps->pdfobjs[(int)i]); + + ps_printf(p, "trailer\n"); + ps_printf(p, "<<\n"); + ps_printf(p, "/Size %zu\n", base + 1); + ps_printf(p, "/Root %zu 0 R\n", base); + ps_printf(p, "/Info 1 0 R\n"); + ps_printf(p, ">>\n"); + ps_printf(p, "startxref\n"); + ps_printf(p, "%zu\n", xref); + ps_printf(p, "%%%%EOF\n"); +} + + +static void +ps_begin(struct termp *p) +{ + time_t t; + int i; + + /* + * Print margins into margin buffer. Nothing gets output to the + * screen yet, so we don't need to initialise the primary state. + */ + + if (p->ps->psmarg) { + assert(p->ps->psmargsz); + p->ps->psmarg[0] = '\0'; + } + + /*p->ps->pdfbytes = 0;*/ + p->ps->psmargcur = 0; + p->ps->flags = PS_MARGINS; + p->ps->pscol = p->ps->left; + p->ps->psrow = p->ps->header; + + ps_setfont(p, TERMFONT_NONE); + + (*p->headf)(p, p->argf); + (*p->endline)(p); + + p->ps->pscol = p->ps->left; + p->ps->psrow = p->ps->footer; + + (*p->footf)(p, p->argf); + (*p->endline)(p); + + p->ps->flags &= ~PS_MARGINS; + + assert(0 == p->ps->flags); + assert(p->ps->psmarg); + assert('\0' != p->ps->psmarg[0]); + + /* + * Print header and initialise page state. Following this, + * stuff gets printed to the screen, so make sure we're sane. + */ + + t = time(NULL); + + if (TERMTYPE_PS == p->type) { + ps_printf(p, "%%!PS-Adobe-3.0\n"); + ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); + ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); + ps_printf(p, "%%%%Orientation: Portrait\n"); + ps_printf(p, "%%%%Pages: (atend)\n"); + ps_printf(p, "%%%%PageOrder: Ascend\n"); + ps_printf(p, "%%%%DocumentMedia: " + "Default %zu %zu 0 () ()\n", + (size_t)AFM2PNT(p, p->ps->width), + (size_t)AFM2PNT(p, p->ps->height)); + ps_printf(p, "%%%%DocumentNeededResources: font"); + + for (i = 0; i < (int)TERMFONT__MAX; i++) + ps_printf(p, " %s", fonts[i].name); + + ps_printf(p, "\n%%%%EndComments\n"); + } else { + ps_printf(p, "%%PDF-1.1\n"); + pdf_obj(p, 1); + ps_printf(p, "<<\n"); + ps_printf(p, ">>\n"); + ps_printf(p, "endobj\n"); + + for (i = 0; i < (int)TERMFONT__MAX; i++) { + pdf_obj(p, (size_t)i + 3); + ps_printf(p, "<<\n"); + ps_printf(p, "/Type /Font\n"); + ps_printf(p, "/Subtype /Type1\n"); + ps_printf(p, "/Name /F%zu\n", i); + ps_printf(p, "/BaseFont /%s\n", fonts[i].name); + ps_printf(p, ">>\n"); + } + } + + p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; + p->ps->pscol = p->ps->left; + p->ps->psrow = p->ps->top; + p->ps->flags |= PS_NEWPAGE; + ps_setfont(p, TERMFONT_NONE); +} + + +static void +ps_pletter(struct termp *p, int c) +{ + int f; + + /* + * If we haven't opened a page context, then output that we're + * in a new page and make sure the font is correctly set. + */ + + if (PS_NEWPAGE & p->ps->flags) { + if (TERMTYPE_PS == p->type) { + ps_printf(p, "%%%%Page: %zu %zu\n", + p->ps->pages + 1, + p->ps->pages + 1); + ps_printf(p, "/%s %zu selectfont\n", + fonts[(int)p->ps->lastf].name, + p->ps->scale); + } else { + pdf_obj(p, p->ps->pdfbody + + p->ps->pages * 4); + ps_printf(p, "<<\n"); + ps_printf(p, "/Length %zu 0 R\n", + p->ps->pdfbody + 1 + + p->ps->pages * 4); + ps_printf(p, ">>\nstream\n"); + } + p->ps->pdflastpg = p->ps->pdfbytes; + p->ps->flags &= ~PS_NEWPAGE; + } + + /* + * If we're not in a PostScript "word" context, then open one + * now at the current cursor. + */ + + if ( ! (PS_INLINE & p->ps->flags)) { + if (TERMTYPE_PS != p->type) { + ps_printf(p, "BT\n/F%d %zu Tf\n", + (int)p->ps->lastf, + p->ps->scale); + ps_printf(p, "%.3f %.3f Td\n(", + AFM2PNT(p, p->ps->pscol), + AFM2PNT(p, p->ps->psrow)); + } else + ps_printf(p, "%.3f %.3f moveto\n(", + AFM2PNT(p, p->ps->pscol), + AFM2PNT(p, p->ps->psrow)); + p->ps->flags |= PS_INLINE; + } + + assert( ! (PS_NEWPAGE & p->ps->flags)); + + /* + * We need to escape these characters as per the PostScript + * specification. We would also escape non-graphable characters + * (like tabs), but none of them would get to this point and + * it's superfluous to abort() on them. + */ + + switch (c) { + case ('('): + /* FALLTHROUGH */ + case (')'): + /* FALLTHROUGH */ + case ('\\'): + ps_putchar(p, '\\'); + break; + default: + break; + } + + /* Write the character and adjust where we are on the page. */ + + f = (int)p->ps->lastf; + + if (c <= 32 || (c - 32 >= MAXCHAR)) { + ps_putchar(p, ' '); + p->ps->pscol += (size_t)fonts[f].gly[0].wx; + return; + } + + ps_putchar(p, (char)c); + c -= 32; + p->ps->pscol += (size_t)fonts[f].gly[c].wx; +} + + +static void +ps_pclose(struct termp *p) +{ + + /* + * Spit out that we're exiting a word context (this is a + * "partial close" because we don't check the last-char buffer + * or anything). + */ + + if ( ! (PS_INLINE & p->ps->flags)) + return; + + if (TERMTYPE_PS != p->type) { + ps_printf(p, ") Tj\nET\n"); + } else + ps_printf(p, ") show\n"); + + p->ps->flags &= ~PS_INLINE; +} + + +static void +ps_fclose(struct termp *p) +{ + + /* + * Strong closure: if we have a last-char, spit it out after + * checking that we're in the right font mode. This will of + * course open a new scope, if applicable. + * + * Following this, close out any scope that's open. + */ + + if ('\0' != p->ps->last) { + if (p->ps->lastf != TERMFONT_NONE) { + ps_pclose(p); + ps_setfont(p, TERMFONT_NONE); + } + ps_pletter(p, p->ps->last); + p->ps->last = '\0'; + } + + if ( ! (PS_INLINE & p->ps->flags)) + return; + + ps_pclose(p); +} + + +static void +ps_letter(struct termp *p, int arg) +{ + char cc, c; + + /* LINTED */ + c = arg >= 128 || arg <= 0 ? '?' : arg; + + /* + * State machine dictates whether to buffer the last character + * or not. Basically, encoded words are detected by checking if + * we're an "8" and switching on the buffer. Then we put "8" in + * our buffer, and on the next charater, flush both character + * and buffer. Thus, "regular" words are detected by having a + * regular character and a regular buffer character. + */ + + if ('\0' == p->ps->last) { + assert(8 != c); + p->ps->last = c; + return; + } else if (8 == p->ps->last) { + assert(8 != c); + p->ps->last = '\0'; + } else if (8 == c) { + assert(8 != p->ps->last); + if ('_' == p->ps->last) { + if (p->ps->lastf != TERMFONT_UNDER) { + ps_pclose(p); + ps_setfont(p, TERMFONT_UNDER); + } + } else if (p->ps->lastf != TERMFONT_BOLD) { + ps_pclose(p); + ps_setfont(p, TERMFONT_BOLD); + } + p->ps->last = c; + return; + } else { + if (p->ps->lastf != TERMFONT_NONE) { + ps_pclose(p); + ps_setfont(p, TERMFONT_NONE); + } + cc = p->ps->last; + p->ps->last = c; + c = cc; + } + + ps_pletter(p, c); +} + + +static void +ps_advance(struct termp *p, size_t len) +{ + + /* + * Advance some spaces. This can probably be made smarter, + * i.e., to have multiple space-separated words in the same + * scope, but this is easier: just close out the current scope + * and readjust our column settings. + */ + + ps_fclose(p); + p->ps->pscol += len; +} + + +static void +ps_endline(struct termp *p) +{ + + /* Close out any scopes we have open: we're at eoln. */ + + ps_fclose(p); + + /* + * If we're in the margin, don't try to recalculate our current + * row. XXX: if the column tries to be fancy with multiple + * lines, we'll do nasty stuff. + */ + + if (PS_MARGINS & p->ps->flags) + return; + + /* Left-justify. */ + + p->ps->pscol = p->ps->left; + + /* If we haven't printed anything, return. */ + + if (PS_NEWPAGE & p->ps->flags) + return; + + /* + * Put us down a line. If we're at the page bottom, spit out a + * showpage and restart our row. + */ + + if (p->ps->psrow >= p->ps->lineheight + + p->ps->bottom) { + p->ps->psrow -= p->ps->lineheight; + return; + } + + ps_closepage(p); +} + + +static void +ps_setfont(struct termp *p, enum termfont f) +{ + + assert(f < TERMFONT__MAX); + p->ps->lastf = f; + + /* + * If we're still at the top of the page, let the font-setting + * be delayed until we actually have stuff to print. + */ + + if (PS_NEWPAGE & p->ps->flags) + return; + + if (TERMTYPE_PS == p->type) + ps_printf(p, "/%s %zu selectfont\n", + fonts[(int)f].name, + p->ps->scale); + else + ps_printf(p, "/F%d %zu Tf\n", + (int)f, + p->ps->scale); +} + + +/* ARGSUSED */ +static size_t +ps_width(const struct termp *p, int c) +{ + + if (c <= 32 || c - 32 >= MAXCHAR) + return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); + + c -= 32; + return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); +} + + +static double +ps_hspan(const struct termp *p, const struct roffsu *su) +{ + double r; + + /* + * All of these measurements are derived by converting from the + * native measurement to AFM units. + */ + + switch (su->unit) { + case (SCALE_CM): + r = PNT2AFM(p, su->scale * 28.34); + break; + case (SCALE_IN): + r = PNT2AFM(p, su->scale * 72); + break; + case (SCALE_PC): + r = PNT2AFM(p, su->scale * 12); + break; + case (SCALE_PT): + r = PNT2AFM(p, su->scale * 100); + break; + case (SCALE_EM): + r = su->scale * + fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; + break; + case (SCALE_MM): + r = PNT2AFM(p, su->scale * 2.834); + break; + case (SCALE_EN): + r = su->scale * + fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; + break; + case (SCALE_VS): + r = su->scale * p->ps->lineheight; + break; + default: + r = su->scale; + break; + } + + return(r); +} + +static void +ps_growbuf(struct termp *p, size_t sz) +{ + if (p->ps->psmargcur + sz <= p->ps->psmargsz) + return; + + if (sz < PS_BUFSLOP) + sz = PS_BUFSLOP; + + p->ps->psmargsz += sz; + + p->ps->psmarg = mandoc_realloc + (p->ps->psmarg, p->ps->psmargsz); +} + |