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-rw-r--r--usr.bin/mandoc/term_ps.c1355
1 files changed, 1355 insertions, 0 deletions
diff --git a/usr.bin/mandoc/term_ps.c b/usr.bin/mandoc/term_ps.c
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--- /dev/null
+++ b/usr.bin/mandoc/term_ps.c
@@ -0,0 +1,1355 @@
+/* $OpenBSD: term_ps.c,v 1.55 2017/11/10 14:16:28 espie Exp $ */
+/*
+ * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2017 Marc Espie <espie@openbsd.org>
+ *
+ * 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 AUTHORS DISCLAIM ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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.
+ */
+#include <sys/types.h>
+
+#include <assert.h>
+#include <err.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "mandoc_aux.h"
+#include "out.h"
+#include "term.h"
+#include "manconf.h"
+#include "main.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) \
+ (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale))
+
+/* Convert an AFM unit "x" to a PostScript points */
+#define AFM2PNT(p, x) \
+ ((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 */
+#define PS_BACKSP (1 << 3) /* last character was backspace */
+ size_t pscol; /* visible column (AFM units) */
+ size_t pscolnext; /* used for overstrike */
+ size_t psrow; /* visible row (AFM units) */
+ size_t lastrow; /* psrow of the previous word */
+ char *psmarg; /* margin buf */
+ size_t psmargsz; /* margin buf size */
+ size_t psmargcur; /* cur index in margin buf */
+ char last; /* last non-backspace seen */
+ enum termfont lastf; /* last set font */
+ enum termfont nextf; /* building next font here */
+ 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) */
+ const char *medianame; /* for DocumentMedia and PageSize */
+ size_t height; /* page height (AFM units */
+ size_t width; /* page width (AFM units) */
+ size_t lastwidth; /* page width before last ll */
+ 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 int 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_growbuf(struct termp *, size_t);
+static void ps_letter(struct termp *, int);
+static void ps_pclose(struct termp *);
+static void ps_plast(struct termp *);
+static void ps_pletter(struct termp *, int);
+static void ps_printf(struct termp *, const char *, ...)
+ __attribute__((__format__ (__printf__, 2, 3)));
+static void ps_putchar(struct termp *, char);
+static void ps_setfont(struct termp *, enum termfont);
+static void ps_setwidth(struct termp *, int, int);
+static struct termp *pspdf_alloc(const struct manoutput *, enum termtype);
+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 },
+ } },
+ { "Times-BoldItalic", {
+ { 250 },
+ { 389 },
+ { 555 },
+ { 500 },
+ { 500 },
+ { 833 },
+ { 778 },
+ { 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 },
+ { 832 },
+ { 667 },
+ { 667 },
+ { 667 },
+ { 722 },
+ { 667 },
+ { 667 },
+ { 722 },
+ { 778 },
+ { 389 },
+ { 500 },
+ { 667 },
+ { 611 },
+ { 889 },
+ { 722 },
+ { 722 },
+ { 611 },
+ { 722 },
+ { 667 },
+ { 556 },
+ { 611 },
+ { 722 },
+ { 667 },
+ { 889 },
+ { 667 },
+ { 611 },
+ { 611 },
+ { 333 },
+ { 278 },
+ { 333 },
+ { 570 },
+ { 500 },
+ { 333 },
+ { 500 },
+ { 500 },
+ { 444 },
+ { 500 },
+ { 444 },
+ { 333 },
+ { 500 },
+ { 556 },
+ { 278 },
+ { 278 },
+ { 500 },
+ { 278 },
+ { 778 },
+ { 556 },
+ { 500 },
+ { 500 },
+ { 500 },
+ { 389 },
+ { 389 },
+ { 278 },
+ { 556 },
+ { 444 },
+ { 667 },
+ { 500 },
+ { 444 },
+ { 389 },
+ { 348 },
+ { 220 },
+ { 348 },
+ { 570 },
+ } },
+};
+
+void *
+pdf_alloc(const struct manoutput *outopts)
+{
+ return pspdf_alloc(outopts, TERMTYPE_PDF);
+}
+
+void *
+ps_alloc(const struct manoutput *outopts)
+{
+ return pspdf_alloc(outopts, TERMTYPE_PS);
+}
+
+static struct termp *
+pspdf_alloc(const struct manoutput *outopts, enum termtype type)
+{
+ struct termp *p;
+ unsigned int pagex, pagey;
+ size_t marginx, marginy, lineheight;
+ const char *pp;
+
+ p = mandoc_calloc(1, sizeof(*p));
+ p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
+ p->maxtcol = 1;
+ p->type = type;
+
+ p->enc = TERMENC_ASCII;
+ p->fontq = mandoc_reallocarray(NULL,
+ (p->fontsz = 8), sizeof(*p->fontq));
+ p->fontq[0] = p->fontl = TERMFONT_NONE;
+ p->ps = mandoc_calloc(1, sizeof(*p->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->setwidth = ps_setwidth;
+ p->width = ps_width;
+
+ /* Default to US letter (millimetres). */
+
+ p->ps->medianame = "Letter";
+ 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.
+ */
+
+ pp = outopts->paper;
+ if (pp != NULL && strcasecmp(pp, "letter") != 0) {
+ if (strcasecmp(pp, "a3") == 0) {
+ p->ps->medianame = "A3";
+ pagex = 297;
+ pagey = 420;
+ } else if (strcasecmp(pp, "a4") == 0) {
+ p->ps->medianame = "A4";
+ pagex = 210;
+ pagey = 297;
+ } else if (strcasecmp(pp, "a5") == 0) {
+ p->ps->medianame = "A5";
+ pagex = 148;
+ pagey = 210;
+ } else if (strcasecmp(pp, "legal") == 0) {
+ p->ps->medianame = "Legal";
+ pagex = 216;
+ pagey = 356;
+ } else if (sscanf(pp, "%ux%u", &pagex, &pagey) == 2)
+ p->ps->medianame = "CustomSize";
+ else
+ warnx("%s: Unknown paper", 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 * 72.0 / 25.4));
+ pagey = PNT2AFM(p, ((double)pagey * 72.0 / 25.4));
+
+ /* Margins are 1/9 the page x and y. */
+
+ marginx = (size_t)((double)pagex / 9.0);
+ marginy = (size_t)((double)pagey / 9.0);
+
+ /* Line-height is 1.4em. */
+
+ lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
+
+ p->ps->width = p->ps->lastwidth = (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;
+}
+
+static void
+ps_setwidth(struct termp *p, int iop, int width)
+{
+ size_t lastwidth;
+
+ lastwidth = p->ps->width;
+ if (iop > 0)
+ p->ps->width += width;
+ else if (iop == 0)
+ p->ps->width = width ? (size_t)width : p->ps->lastwidth;
+ else if (p->ps->width > (size_t)width)
+ p->ps->width -= width;
+ else
+ p->ps->width = 0;
+ p->ps->lastwidth = lastwidth;
+}
+
+void
+pspdf_free(void *arg)
+{
+ struct termp *p;
+
+ p = (struct termp *)arg;
+
+ free(p->ps->psmarg);
+ 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 += 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)) {
+ 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 = mandoc_reallocarray(p->ps->pdfobjs,
+ p->ps->pdfobjsz, sizeof(size_t));
+ }
+
+ 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 shown. 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) {
+ 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>>\nendobj\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;
+}
+
+static void
+ps_end(struct termp *p)
+{
+ size_t i, xref, base;
+
+ ps_plast(p);
+ ps_pclose(p);
+
+ /*
+ * 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, ">>\nendobj\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)
+{
+ size_t width, height;
+ 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;
+ p->ps->lastrow = 0; /* impossible row */
+
+ 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.
+ */
+
+ if (TERMTYPE_PS == p->type) {
+ width = AFM2PNT(p, p->ps->width);
+ height = AFM2PNT(p, p->ps->height);
+
+ ps_printf(p, "%%!PS-Adobe-3.0\n");
+ 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: man-%s %zu %zu 0 () ()\n",
+ p->ps->medianame, width, 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%%%%DocumentSuppliedResources: "
+ "procset MandocProcs 1.0 0\n");
+ ps_printf(p, "%%%%EndComments\n");
+ ps_printf(p, "%%%%BeginProlog\n");
+ ps_printf(p, "%%%%BeginResource: procset MandocProcs "
+ "10170 10170\n");
+ /* The font size is effectively hard-coded for now. */
+ ps_printf(p, "/fs %zu def\n", p->ps->scale);
+ for (i = 0; i < (int)TERMFONT__MAX; i++)
+ ps_printf(p, "/f%d { /%s fs selectfont } def\n",
+ i, fonts[i].name);
+ ps_printf(p, "/s { 3 1 roll moveto show } bind def\n");
+ ps_printf(p, "/c { exch currentpoint exch pop "
+ "moveto show } bind def\n");
+ ps_printf(p, "%%%%EndResource\n");
+ ps_printf(p, "%%%%EndProlog\n");
+ ps_printf(p, "%%%%BeginSetup\n");
+ ps_printf(p, "%%%%BeginFeature: *PageSize %s\n",
+ p->ps->medianame);
+ ps_printf(p, "<</PageSize [%zu %zu]>>setpagedevice\n",
+ width, height);
+ ps_printf(p, "%%%%EndFeature\n");
+ ps_printf(p, "%%%%EndSetup\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%d\n", i);
+ ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
+ ps_printf(p, ">>\nendobj\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, "f%d\n", (int)p->ps->lastf);
+ } 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", AFM2PNT(p, p->ps->pscol));
+ if (p->ps->psrow != p->ps->lastrow)
+ ps_printf(p, " %.3f",
+ AFM2PNT(p, p->ps->psrow));
+ ps_printf(p, "(");
+ }
+ 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 '(':
+ case ')':
+ 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)
+ c = 32;
+
+ 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 if (p->ps->psrow == p->ps->lastrow)
+ ps_printf(p, ")c\n");
+ else {
+ ps_printf(p, ")s\n");
+ p->ps->lastrow = p->ps->psrow;
+ }
+
+ p->ps->flags &= ~PS_INLINE;
+}
+
+/* If we have a `last' char that wasn't printed yet, print it now. */
+static void
+ps_plast(struct termp *p)
+{
+ size_t wx;
+
+ if (p->ps->last == '\0')
+ return;
+
+ /* Check the font mode; open a new scope if it doesn't match. */
+
+ if (p->ps->nextf != p->ps->lastf) {
+ ps_pclose(p);
+ ps_setfont(p, p->ps->nextf);
+ }
+ p->ps->nextf = TERMFONT_NONE;
+
+ /*
+ * For an overstrike, if a previous character
+ * was wider, advance to center the new one.
+ */
+
+ if (p->ps->pscolnext) {
+ wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx;
+ if (p->ps->pscol + wx < p->ps->pscolnext)
+ p->ps->pscol = (p->ps->pscol +
+ p->ps->pscolnext - wx) / 2;
+ }
+
+ ps_pletter(p, p->ps->last);
+ p->ps->last = '\0';
+
+ /*
+ * For an overstrike, if a previous character
+ * was wider, advance to the end of the old one.
+ */
+
+ if (p->ps->pscol < p->ps->pscolnext) {
+ ps_pclose(p);
+ p->ps->pscol = p->ps->pscolnext;
+ }
+}
+
+static void
+ps_letter(struct termp *p, int arg)
+{
+ size_t savecol;
+ char c;
+
+ c = arg >= 128 || arg <= 0 ? '?' : arg;
+
+ /*
+ * When receiving a backspace, merely flag it.
+ * We don't know yet whether it is
+ * a font instruction or an overstrike.
+ */
+
+ if (c == '\b') {
+ assert(p->ps->last != '\0');
+ assert( ! (p->ps->flags & PS_BACKSP));
+ p->ps->flags |= PS_BACKSP;
+ return;
+ }
+
+ /*
+ * Decode font instructions.
+ */
+
+ if (p->ps->flags & PS_BACKSP) {
+ if (p->ps->last == '_') {
+ switch (p->ps->nextf) {
+ case TERMFONT_BI:
+ break;
+ case TERMFONT_BOLD:
+ p->ps->nextf = TERMFONT_BI;
+ break;
+ default:
+ p->ps->nextf = TERMFONT_UNDER;
+ }
+ p->ps->last = c;
+ p->ps->flags &= ~PS_BACKSP;
+ return;
+ }
+ if (p->ps->last == c) {
+ switch (p->ps->nextf) {
+ case TERMFONT_BI:
+ break;
+ case TERMFONT_UNDER:
+ p->ps->nextf = TERMFONT_BI;
+ break;
+ default:
+ p->ps->nextf = TERMFONT_BOLD;
+ }
+ p->ps->flags &= ~PS_BACKSP;
+ return;
+ }
+
+ /*
+ * This is not a font instruction, but rather
+ * the next character. Prepare for overstrike.
+ */
+
+ savecol = p->ps->pscol;
+ } else
+ savecol = SIZE_MAX;
+
+ /*
+ * We found the next character, so the font instructions
+ * for the previous one are complete.
+ * Use them and print it.
+ */
+
+ ps_plast(p);
+
+ /*
+ * Do not print the current character yet because font
+ * instructions might follow; only remember the character.
+ * It will get printed later from ps_plast().
+ */
+
+ p->ps->last = c;
+
+ /*
+ * For an overstrike, back up to the previous position.
+ * If the previous character is wider than any it overstrikes,
+ * remember the current position, because it might also be
+ * wider than all that will overstrike it.
+ */
+
+ if (savecol != SIZE_MAX) {
+ if (p->ps->pscolnext < p->ps->pscol)
+ p->ps->pscolnext = p->ps->pscol;
+ ps_pclose(p);
+ p->ps->pscol = savecol;
+ p->ps->flags &= ~PS_BACKSP;
+ } else
+ p->ps->pscolnext = 0;
+}
+
+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_plast(p);
+ ps_pclose(p);
+ p->ps->pscol += len;
+}
+
+static void
+ps_endline(struct termp *p)
+{
+
+ /* Close out any scopes we have open: we're at eoln. */
+
+ ps_plast(p);
+ ps_pclose(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);
+
+ p->tcol->offset -= p->ti;
+ p->ti = 0;
+}
+
+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, "f%d\n", (int)f);
+ else
+ ps_printf(p, "/F%d %zu Tf\n",
+ (int)f, p->ps->scale);
+}
+
+static size_t
+ps_width(const struct termp *p, int c)
+{
+
+ if (c <= 32 || c - 32 >= MAXCHAR)
+ c = 0;
+ else
+ c -= 32;
+
+ return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx;
+}
+
+static int
+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_BU:
+ /*
+ * Traditionally, the default unit is fixed to the
+ * output media. So this would refer to the point. In
+ * mandoc(1), however, we stick to the default terminal
+ * scaling unit so that output is the same regardless
+ * the media.
+ */
+ r = PNT2AFM(p, su->scale * 72.0 / 240.0);
+ break;
+ case SCALE_CM:
+ r = PNT2AFM(p, su->scale * 72.0 / 2.54);
+ break;
+ case SCALE_EM:
+ r = su->scale *
+ fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
+ break;
+ case SCALE_EN:
+ r = su->scale *
+ fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
+ break;
+ case SCALE_IN:
+ r = PNT2AFM(p, su->scale * 72.0);
+ break;
+ case SCALE_MM:
+ r = su->scale *
+ fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0;
+ break;
+ case SCALE_PC:
+ r = PNT2AFM(p, su->scale * 12.0);
+ break;
+ case SCALE_PT:
+ r = PNT2AFM(p, su->scale * 1.0);
+ break;
+ case SCALE_VS:
+ r = su->scale * p->ps->lineheight;
+ break;
+ default:
+ r = su->scale;
+ break;
+ }
+
+ return r * 24.0;
+}
+
+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);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-20 11:44:30 +0000