text: /*	$Id: term_ps.c,v 1.51 2011/05/17 14:38:34 kristaps Exp $ */
  /*
   * 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
   * 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;
  	size_t		 pagex, pagey, 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, "%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->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 = pagex;
  	p->ps->height = 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;
  	len = 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);
  }
  
  