-/* $Id: term_ps.c,v 1.1 2010/06/08 13:22:37 kristaps Exp $ */
+/* $Id: term_ps.c,v 1.41 2010/08/06 16:07:35 kristaps Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2010 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
#include "config.h"
#endif
+#include <sys/param.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 "out.h"
#include "main.h"
#include "term.h"
+/* Convert PostScript point "x" to an AFM unit. */
+#define PNT2AFM(p, x) /* LINTED */ \
+ (size_t)((double)(x) * (1000.0 / (double)(p)->engine.ps.scale))
+
+/* Convert an AFM unit "x" to a PostScript points */
+#define AFM2PNT(p, x) /* LINTED */ \
+ ((double)(x) / (1000.0 / (double)(p)->engine.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 */
+};
+
+/*
+ * 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 },
+ } },
+};
+
+/* These work the buffer used by the header and footer. */
+#define PS_BUFSLOP 128
+
+static void
+ps_growbuf(struct termp *p, size_t sz)
+{
+ if (p->engine.ps.psmargcur + sz <= p->engine.ps.psmargsz)
+ return;
+
+ if (sz < PS_BUFSLOP)
+ sz = PS_BUFSLOP;
+
+ p->engine.ps.psmargsz += sz;
+
+ p->engine.ps.psmarg = realloc
+ (p->engine.ps.psmarg,
+ p->engine.ps.psmargsz);
+
+ if (NULL == p->engine.ps.psmarg) {
+ perror(NULL);
+ exit(EXIT_FAILURE);
+ }
+}
+
+static double ps_hspan(const struct termp *,
+ const struct roffsu *);
+static size_t ps_width(const struct termp *, char);
+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_letter(struct termp *, char);
+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);
+
+
+void *
+pdf_alloc(char *outopts)
+{
+ struct termp *p;
+
+ if (NULL != (p = pspdf_alloc(outopts)))
+ p->type = TERMTYPE_PDF;
+
+ return(p);
+}
+
+
void *
-ps_alloc(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;
+ size_t pagex, pagey, marginx, marginy, lineheight;
+ const char *toks[2];
+ const char *pp;
+ char *v;
+
if (NULL == (p = term_alloc(TERMENC_ASCII)))
return(NULL);
- p->type = TERMTYPE_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, "%zux%zu", &pagex, &pagey))
+ fprintf(stderr, "%s: Unknown paper\n", pp);
+ } else if (NULL == pp)
+ pp = "letter";
+
+ /*
+ * This MUST be defined before any PNT2AFM or AFM2PNT
+ * calculations occur.
+ */
+
+ p->engine.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->engine.ps.scale * 1.4));
+
+ p->engine.ps.width = pagex;
+ p->engine.ps.height = pagey;
+ p->engine.ps.header = pagey - (marginy / 2) - (lineheight / 2);
+ p->engine.ps.top = pagey - marginy;
+ p->engine.ps.footer = (marginy / 2) - (lineheight / 2);
+ p->engine.ps.bottom = marginy;
+ p->engine.ps.left = marginx;
+ p->engine.ps.lineheight = lineheight;
+
+ p->defrmargin = pagex - (marginx * 2);
return(p);
}
void
-ps_free(void *arg)
+pspdf_free(void *arg)
{
+ struct termp *p;
- term_free((struct termp *)arg);
+ p = (struct termp *)arg;
+
+ if (p->engine.ps.psmarg)
+ free(p->engine.ps.psmarg);
+ if (p->engine.ps.pdfobjs)
+ free(p->engine.ps.pdfobjs);
+
+ 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->engine.ps.flags)) {
+ len = vprintf(fmt, ap);
+ va_end(ap);
+ p->engine.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->engine.ps.psmargcur;
+ len = vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
+
+ va_end(ap);
+
+ p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
}
+
+
+static void
+ps_putchar(struct termp *p, char c)
+{
+ int pos;
+
+ /* See ps_printf(). */
+
+ if ( ! (PS_MARGINS & p->engine.ps.flags)) {
+ putchar(c);
+ p->engine.ps.pdfbytes++;
+ return;
+ }
+
+ ps_growbuf(p, 2);
+
+ pos = (int)p->engine.ps.psmargcur++;
+ p->engine.ps.psmarg[pos++] = c;
+ p->engine.ps.psmarg[pos] = '\0';
+}
+
+
+static void
+pdf_obj(struct termp *p, size_t obj)
+{
+
+ assert(obj > 0);
+
+ if ((obj - 1) >= p->engine.ps.pdfobjsz) {
+ p->engine.ps.pdfobjsz = obj + 128;
+ p->engine.ps.pdfobjs = realloc
+ (p->engine.ps.pdfobjs,
+ p->engine.ps.pdfobjsz * sizeof(size_t));
+ if (NULL == p->engine.ps.pdfobjs) {
+ perror(NULL);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ p->engine.ps.pdfobjs[(int)obj - 1] = p->engine.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->engine.ps.psmarg && p->engine.ps.psmarg[0]);
+ ps_printf(p, "%s", p->engine.ps.psmarg);
+
+ if (TERMTYPE_PS != p->type) {
+ ps_printf(p, "ET\n");
+
+ len = p->engine.ps.pdfbytes - p->engine.ps.pdflastpg;
+ base = p->engine.ps.pages * 4 + p->engine.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->engine.ps.pages++;
+ p->engine.ps.psrow = p->engine.ps.top;
+ assert( ! (PS_NEWPAGE & p->engine.ps.flags));
+ p->engine.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->engine.ps.flags)) {
+ assert(0 == p->engine.ps.flags);
+ assert('\0' == p->engine.ps.last);
+ ps_closepage(p);
+ }
+
+ if (TERMTYPE_PS == p->type) {
+ ps_printf(p, "%%%%Trailer\n");
+ ps_printf(p, "%%%%Pages: %zu\n", p->engine.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->engine.ps.width),
+ (size_t)AFM2PNT(p, p->engine.ps.height));
+
+ ps_printf(p, "/Count %zu\n", p->engine.ps.pages);
+ ps_printf(p, "/Kids [");
+
+ for (i = 0; i < p->engine.ps.pages; i++)
+ ps_printf(p, " %zu 0 R", i * 4 +
+ p->engine.ps.pdfbody + 3);
+
+ base = (p->engine.ps.pages - 1) * 4 +
+ p->engine.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->engine.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->engine.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->engine.ps.psmarg) {
+ assert(p->engine.ps.psmargsz);
+ p->engine.ps.psmarg[0] = '\0';
+ }
+
+ /*p->engine.ps.pdfbytes = 0;*/
+ p->engine.ps.psmargcur = 0;
+ p->engine.ps.flags = PS_MARGINS;
+ p->engine.ps.pscol = p->engine.ps.left;
+ p->engine.ps.psrow = p->engine.ps.header;
+
+ ps_setfont(p, TERMFONT_NONE);
+
+ (*p->headf)(p, p->argf);
+ (*p->endline)(p);
+
+ p->engine.ps.pscol = p->engine.ps.left;
+ p->engine.ps.psrow = p->engine.ps.footer;
+
+ (*p->footf)(p, p->argf);
+ (*p->endline)(p);
+
+ p->engine.ps.flags &= ~PS_MARGINS;
+
+ assert(0 == p->engine.ps.flags);
+ assert(p->engine.ps.psmarg);
+ assert('\0' != p->engine.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, "%%%%Creator: mandoc-%s\n", VERSION);
+ 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->engine.ps.width),
+ (size_t)AFM2PNT(p, p->engine.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, "/Creator mandoc-%s\n", VERSION);
+ 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->engine.ps.pdfbody = (size_t)TERMFONT__MAX + 3;
+ p->engine.ps.pscol = p->engine.ps.left;
+ p->engine.ps.psrow = p->engine.ps.top;
+ p->engine.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->engine.ps.flags) {
+ if (TERMTYPE_PS == p->type) {
+ ps_printf(p, "%%%%Page: %zu %zu\n",
+ p->engine.ps.pages + 1,
+ p->engine.ps.pages + 1);
+ ps_printf(p, "/%s %zu selectfont\n",
+ fonts[(int)p->engine.ps.lastf].name,
+ p->engine.ps.scale);
+ } else {
+ pdf_obj(p, p->engine.ps.pdfbody +
+ p->engine.ps.pages * 4);
+ ps_printf(p, "<<\n");
+ ps_printf(p, "/Length %zu 0 R\n",
+ p->engine.ps.pdfbody + 1 +
+ p->engine.ps.pages * 4);
+ ps_printf(p, ">>\nstream\n");
+ }
+ p->engine.ps.pdflastpg = p->engine.ps.pdfbytes;
+ p->engine.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->engine.ps.flags)) {
+ if (TERMTYPE_PS != p->type) {
+ ps_printf(p, "BT\n/F%d %zu Tf\n",
+ (int)p->engine.ps.lastf,
+ p->engine.ps.scale);
+ ps_printf(p, "%.3f %.3f Td\n(",
+ AFM2PNT(p, p->engine.ps.pscol),
+ AFM2PNT(p, p->engine.ps.psrow));
+ } else
+ ps_printf(p, "%.3f %.3f moveto\n(",
+ AFM2PNT(p, p->engine.ps.pscol),
+ AFM2PNT(p, p->engine.ps.psrow));
+ p->engine.ps.flags |= PS_INLINE;
+ }
+
+ assert( ! (PS_NEWPAGE & p->engine.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->engine.ps.lastf;
+
+ if (c <= 32 || (c - 32 > MAXCHAR)) {
+ ps_putchar(p, ' ');
+ p->engine.ps.pscol += (size_t)fonts[f].gly[0].wx;
+ return;
+ }
+
+ ps_putchar(p, (char)c);
+ c -= 32;
+ p->engine.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->engine.ps.flags))
+ return;
+
+ if (TERMTYPE_PS != p->type) {
+ ps_printf(p, ") Tj\nET\n");
+ } else
+ ps_printf(p, ") show\n");
+
+ p->engine.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->engine.ps.last) {
+ if (p->engine.ps.lastf != TERMFONT_NONE) {
+ ps_pclose(p);
+ ps_setfont(p, TERMFONT_NONE);
+ }
+ ps_pletter(p, p->engine.ps.last);
+ p->engine.ps.last = '\0';
+ }
+
+ if ( ! (PS_INLINE & p->engine.ps.flags))
+ return;
+
+ ps_pclose(p);
+}
+
+
+static void
+ps_letter(struct termp *p, char c)
+{
+ char cc;
+
+ /*
+ * 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->engine.ps.last) {
+ assert(8 != c);
+ p->engine.ps.last = c;
+ return;
+ } else if (8 == p->engine.ps.last) {
+ assert(8 != c);
+ p->engine.ps.last = '\0';
+ } else if (8 == c) {
+ assert(8 != p->engine.ps.last);
+ if ('_' == p->engine.ps.last) {
+ if (p->engine.ps.lastf != TERMFONT_UNDER) {
+ ps_pclose(p);
+ ps_setfont(p, TERMFONT_UNDER);
+ }
+ } else if (p->engine.ps.lastf != TERMFONT_BOLD) {
+ ps_pclose(p);
+ ps_setfont(p, TERMFONT_BOLD);
+ }
+ p->engine.ps.last = c;
+ return;
+ } else {
+ if (p->engine.ps.lastf != TERMFONT_NONE) {
+ ps_pclose(p);
+ ps_setfont(p, TERMFONT_NONE);
+ }
+ cc = p->engine.ps.last;
+ p->engine.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->engine.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->engine.ps.flags)
+ return;
+
+ /* Left-justify. */
+
+ p->engine.ps.pscol = p->engine.ps.left;
+
+ /* If we haven't printed anything, return. */
+
+ if (PS_NEWPAGE & p->engine.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->engine.ps.psrow >= p->engine.ps.lineheight +
+ p->engine.ps.bottom) {
+ p->engine.ps.psrow -= p->engine.ps.lineheight;
+ return;
+ }
+
+ ps_closepage(p);
+}
+
+
+static void
+ps_setfont(struct termp *p, enum termfont f)
+{
+
+ assert(f < TERMFONT__MAX);
+ p->engine.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->engine.ps.flags)
+ return;
+
+ if (TERMTYPE_PS == p->type)
+ ps_printf(p, "/%s %zu selectfont\n",
+ fonts[(int)f].name,
+ p->engine.ps.scale);
+ else
+ ps_printf(p, "/F%d %zu Tf\n",
+ (int)f,
+ p->engine.ps.scale);
+}
+
+
+/* ARGSUSED */
+static size_t
+ps_width(const struct termp *p, char 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[(int)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->engine.ps.lineheight;
+ break;
+ default:
+ r = su->scale;
+ break;
+ }
+
+ return(r);
+}
+
git.ckatri.com / mandoc.git / blobdiff