shithub: neatpost

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pdf: a basic pdf post-processor

--- a/Makefile

+++ b/Makefile

@@ -4,12 +4,15 @@

 CC = cc

 CFLAGS = -Wall -O2 "-DTROFFFDIR=\"$(FDIR)\""

 LDFLAGS =

-OBJS = post.o out.o ps.o font.o dev.o clr.o dict.o iset.o

+OBJS = post.o ps.o font.o dev.o clr.o dict.o iset.o

+OBJSPDF = post.o pdf.o font.o dev.o clr.o dict.o iset.o sbuf.o

-all: post

+all: post pdf

 %.o: %.c post.h

 	$(CC) -c $(CFLAGS) $<

 post: $(OBJS)

 	$(CC) -o $@ $(OBJS) $(LDFLAGS)

+pdf: $(OBJSPDF)

+	$(CC) -o $@ $(OBJSPDF) $(LDFLAGS)

 clean:

-	rm -f *.o post

+	rm -f *.o post pdf

--- a/dict.c

+++ b/dict.c

@@ -25,7 +25,7 @@

 struct dict *dict_make(int notfound, int dupkeys)

 {

-	struct dict *d = xmalloc(sizeof(*d));

+	struct dict *d = malloc(sizeof(*d));

 	memset(d, 0, sizeof(*d));

 	d->n = 1;

 	d->dupkeys = dupkeys;

@@ -54,7 +54,7 @@

 		dict_extend(d, d->n + CNTMIN);

 	if (d->dupkeys) {

 		int len = strlen(key) + 1;

-		char *dup = xmalloc(len);

+		char *dup = malloc(len);

 		memcpy(dup, key, len);

 		key = dup;

 	}

--- a/font.c

+++ b/font.c

@@ -7,6 +7,7 @@

 struct font {

 	char name[FNLEN];

 	char fontname[FNLEN];

+	char fontpath[1024];

 	int spacewid;

 	struct glyph *gl;		/* glyphs present in the font */

 	int gl_n, gl_sz;		/* number of glyphs in the font */

@@ -108,7 +109,7 @@

 	fin = fopen(path, "r");

 	if (!fin)

 		return NULL;

-	fn = xmalloc(sizeof(*fn));

+	fn = malloc(sizeof(*fn));

 	if (!fn) {

 		fclose(fin);

 		return NULL;

@@ -126,6 +127,12 @@

 			fscanf(fin, "%s", fn->name);

 		} else if (!strcmp("fontname", tok)) {

 			fscanf(fin, "%s", fn->fontname);

+		} else if (!strcmp("fontpath", tok)) {

+			int c = fgetc(fin);

+			while (c == ' ')

+				c = fgetc(fin);

+			ungetc(c, fin);

+			tilleol(fin, fn->fontpath);

 		} else if (!strcmp("ligatures", tok)) {

 			while (fscanf(fin, "%s", tok) == 1)

 				if (!strcmp("0", tok))

@@ -165,4 +172,19 @@

 char *font_name(struct font *fn)

 {

 	return fn->fontname;

+}

+

+char *font_path(struct font *fn)

+{

+	return fn->fontpath;

+}

+

+int font_glnum(struct font *fn, struct glyph *g)

+{

+	return g - fn->gl;

+}

+

+struct glyph *font_glget(struct font *fn, int id)

+{

+	return id >= 0 && id < fn->gl_n ? &fn->gl[id] : NULL;

 }

--- a/iset.c

+++ b/iset.c

@@ -24,7 +24,7 @@

 struct iset *iset_make(void)

 {

-	struct iset *iset = xmalloc(sizeof(*iset));

+	struct iset *iset = malloc(sizeof(*iset));

 	memset(iset, 0, sizeof(*iset));

 	iset_extend(iset, CNTMIN);

 	return iset;

@@ -60,7 +60,7 @@

 	if (key >= 0 && key < iset->cnt && iset->len[key] + 1 >= iset->sz[key]) {

 		int olen = iset->sz[key];

 		int nlen = iset->sz[key] * 2 + 8;

-		void *nset = xmalloc(nlen * sizeof(iset->set[key][0]));

+		void *nset = malloc(nlen * sizeof(iset->set[key][0]));

 		if (iset->set[key]) {

 			memcpy(nset, iset->set[key],

 				olen * sizeof(iset->set[key][0]));

--- a/out.c

+++ /dev/null

@@ -1,354 +1,0 @@

-#include <ctype.h>

-#include <stdarg.h>

-#include <stdio.h>

-#include <stdlib.h>

-#include <string.h>

-#include "post.h"

-

-static int o_f, o_s, o_m;	/* font and size */

-static int o_h, o_v;		/* current user position */

-static int p_f, p_s, p_m;	/* output postscript font */

-static int o_qtype;		/* queued character type */

-static int o_qv, o_qh, o_qend;	/* queued character position */

-static int o_rh, o_rv, o_rdeg;	/* previous rotation position and degree */

-static int o_gname;		/* use glyphshow for all glyphs */

-

-char o_fonts[FNLEN * NFONTS] = " ";

-

-static void outvf(char *s, va_list ap)

-{

-	vfprintf(stdout, s, ap);

-}

-

-static void outf(char *s, ...)

-{

-	va_list ap;

-	va_start(ap, s);

-	outvf(s, ap);

-	va_end(ap);

-}

-

-static void o_flush(void)

-{

-	if (o_qtype == 1)

-		outf(") %d %d w\n", o_qh, o_qv);

-	if (o_qtype == 2)

-		outf("] %d %d g\n", o_qh, o_qv);

-	o_qtype = 0;

-}

-

-void outgname(int g)

-{

-	o_gname = g;

-}

-

-void outpage(void)

-{

-	o_flush();

-	o_v = 0;

-	o_h = 0;

-	p_s = 0;

-	p_f = 0;

-	p_m = 0;

-	o_rdeg = 0;

-}

-

-static void o_queue(struct glyph *g)

-{

-	int type = 1 + (g->pos <= 0 || o_gname);

-	if (o_qtype != type || o_qend != o_h || o_qv != o_v) {

-		o_flush();

-		o_qh = o_h;

-		o_qv = o_v;

-		o_qtype = type;

-		outf(type == 1 ? "(" : "[");

-	}

-	if (o_qtype == 1) {

-		if (g->pos >= ' ' && g->pos <= '~')

-			outf("%s%c", strchr("()\\", g->pos) ? "\\" : "", g->pos);

-		else

-			outf("\\%d%d%d", (g->pos >> 6) & 7,

-					(g->pos >> 3) & 7, g->pos & 7);

-	} else {

-		outf("/%s", g->id);

-	}

-	o_qend = o_h + font_wid(g->font, o_s, g->wid);

-}

-

-/* calls o_flush() if necessary */

-void out(char *s, ...)

-{

-	va_list ap;

-	o_flush();

-	va_start(ap, s);

-	outvf(s, ap);

-	va_end(ap);

-}

-

-static void out_fontup(int fid)

-{

-	char fnname[FNLEN];

-	struct font *fn;

-	if (o_m != p_m) {

-		out("%d %d %d rgb\n", CLR_R(o_m), CLR_G(o_m), CLR_B(o_m));

-		p_m = o_m;

-	}

-	if (fid != p_f || o_s != p_s) {

-		fn = dev_font(fid);

-		out("%d /%s f\n", o_s, font_name(fn));

-		p_f = fid;

-		p_s = o_s;

-		sprintf(fnname, " %s ", font_name(fn));

-		if (!strstr(o_fonts, fnname))

-			sprintf(strchr(o_fonts, '\0'), "%s ", font_name(fn));

-	}

-}

-

-void outc(char *c)

-{

-	struct glyph *g;

-	struct font *fn;

-	g = dev_glyph(c, o_f);

-	fn = g ? g->font : dev_font(o_f);

-	if (!g) {

-		outrel(*c == ' ' && fn ? font_swid(fn, o_s) : 1, 0);

-		return;

-	}

-	out_fontup(dev_fontid(fn));

-	o_queue(g);

-}

-

-void outh(int h)

-{

-	o_h = h;

-}

-

-void outv(int v)

-{

-	o_v = v;

-}

-

-void outrel(int h, int v)

-{

-	o_h += h;

-	o_v += v;

-}

-

-void outfont(int f)

-{

-	if (dev_font(f))

-		o_f = f;

-}

-

-/* a font was mounted at pos f */

-void outmnt(int f)

-{

-	if (p_f == f)

-		p_f = -1;

-}

-

-void outsize(int s)

-{

-	if (s > 0)

-		o_s = s;

-}

-

-void outcolor(int c)

-{

-	o_m = c;

-}

-

-void outrotate(int deg)

-{

-	o_flush();

-	out_fontup(o_f);

-	if (o_rdeg)

-		outf("%d %d %d rot\n", -o_rdeg, o_rh, o_rv);

-	o_rdeg = deg;

-	o_rh = o_h;

-	o_rv = o_v;

-	outf("%d %d %d rot\n", deg, o_h, o_v);

-}

-

-static int draw_path;	/* number of path segments */

-static int draw_point;	/* point was set for postscript newpath */

-

-static void drawmv(void)

-{

-	if (!draw_point)

-		outf("%d %d m ", o_h, o_v);

-	draw_point = 1;

-}

-

-/* start a multi-segment path */

-void drawmbeg(char *s)

-{

-	o_flush();

-	out_fontup(o_f);

-	draw_path = 1;

-	outf("gsave newpath %s\n", s);

-}

-

-/* end a multi-segment path */

-void drawmend(char *s)

-{

-	draw_path = 0;

-	draw_point = 0;

-	outf("%s grestore\n", s);

-}

-

-void drawbeg(void)

-{

-	o_flush();

-	out_fontup(o_f);

-	if (draw_path)

-		return;

-	outf("newpath ");

-}

-

-void drawend(int close, int fill)

-{

-	if (draw_path)

-		return;

-	draw_point = 0;

-	if (close)

-		outf("closepath ");

-	if (fill)

-		outf("fill\n");

-	else

-		outf("stroke\n");

-}

-

-void drawl(int h, int v)

-{

-	drawmv();

-	outrel(h, v);

-	outf("%d %d drawl ", o_h, o_v);

-}

-

-void drawc(int c)

-{

-	drawmv();

-	outrel(c, 0);

-	outf("%d %d drawe ", c, c);

-}

-

-void drawe(int h, int v)

-{

-	drawmv();

-	outrel(h, 0);

-	outf("%d %d drawe ", h, v);

-}

-

-void drawa(int h1, int v1, int h2, int v2)

-{

-	drawmv();

-	outf("%d %d %d %d drawa ", h1, v1, h2, v2);

-	outrel(h1 + h2, v1 + v2);

-}

-

-void draws(int h1, int v1, int h2, int v2)

-{

-	drawmv();

-	outf("%d %d %d %d %d %d draws ", o_h, o_v, o_h + h1, o_v + v1,

-		o_h + h1 + h2, o_v + v1 + v2);

-	outrel(h1, v1);

-}

-

-static char *strcut(char *dst, char *src)

-{

-	while (*src == ' ' || *src == '\n')

-		src++;

-	if (src[0] == '"') {

-		src++;

-		while (*src && (src[0] != '"' || src[1] == '"')) {

-			if (*src == '"')

-				src++;

-			*dst++ = *src++;

-		}

-		if (*src == '"')

-			src++;

-	} else {

-		while (*src && *src != ' ' && *src != '\n')

-			*dst++ = *src++;

-	}

-	*dst = '\0';

-	return src;

-}

-

-void outeps(char *spec)

-{

-	char eps[1 << 12];

-	char buf[1 << 12];

-	int llx, lly, urx, ury;

-	int hwid, vwid;

-	FILE *filp;

-	int nspec, nbb;

-	spec = strcut(eps, spec);

-	if (!eps[0])

-		return;

-	nspec = sscanf(spec, "%d %d", &hwid, &vwid);

-	if (nspec < 1)

-		hwid = 0;

-	if (nspec < 2)

-		vwid = 0;

-	if (!(filp = fopen(eps, "r")))

-		return;

-	if (!fgets(buf, sizeof(buf), filp) ||

-			(strcmp(buf, "%!PS-Adobe-2.0 EPSF-1.2\n") &&

-			strcmp(buf, "%!PS-Adobe-2.0 EPSF-2.0\n") &&

-			strcmp(buf, "%!PS-Adobe-3.0 EPSF-3.0\n"))) {

-		fclose(filp);

-		return;

-	}

-	nbb = 0;

-	while (fgets(buf, sizeof(buf), filp))

-		if (!strncmp(buf, "%%BoundingBox: ", 15))

-			if ((nbb = sscanf(buf + 15, "%d %d %d %d",

-					&llx, &lly, &urx, &ury)) == 4)

-				break;

-	fclose(filp);

-	if (nbb < 4)		/* no BoundingBox comment */

-		return;

-	if (hwid <= 0 && vwid <= 0)

-		hwid = (urx - llx) * dev_res / 72;

-	if (vwid <= 0)

-		vwid = (ury - lly) * hwid / (urx - llx);

-	if (hwid <= 0)

-		hwid = (urx - llx) * vwid / (ury - lly);

-	/* output the EPS file */

-	o_flush();

-	out_fontup(o_f);

-	outf("%d %d %d %d %d %d %d %d EPSFBEG\n",

-		llx, lly, hwid, urx - llx, vwid, ury - lly, o_h, o_v);

-	outf("%%%%BeginDocument: %s\n", eps);

-	filp = fopen(eps, "r");

-	while (fgets(buf, sizeof(buf), filp))

-		out("%s", buf);

-	fclose(filp);

-	outf("%%%%EndDocument\n");

-	outf("EPSFEND\n");

-}

-

-void outlink(char *spec)

-{

-	char lnk[1 << 12];

-	int hwid, vwid;

-	int nspec;

-	spec = strcut(lnk, spec);

-	if (!lnk[0] || (nspec = sscanf(spec, "%d %d", &hwid, &vwid)) != 2)

-		return;

-	o_flush();

-	if (lnk[0] == '#' || isdigit((unsigned char) lnk[0])) {

-		outf("[ /Rect [ %d %d t %d %d t ] %s%s "

-			"/Subtype /Link /LNK pdfmark\n",

-			o_h, o_v, o_h + hwid, o_v + vwid,

-			lnk[0] == '#' ? "/Dest /" : "/Page ",

-			lnk[0] == '#' ? lnk + 1 : lnk);

-	} else {

-		outf("[ /Rect [ %d %d t %d %d t ] "

-			"/Action << /Subtype /URI /URI (%s) >> /Open true "

-			"/Subtype /Link /LNK pdfmark\n",

-			o_h, o_v, o_h + hwid, o_v + vwid, lnk);

-	}

-}

--- /dev/null

+++ b/pdf.c

@@ -1,0 +1,489 @@

+#include <stdarg.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

+#include "post.h"

+

+static char *pdf_title;		/* document title */

+static int pdf_width;		/* page width */

+static int pdf_height;		/* page height */

+static int pdf_pages;		/* pages object id */

+static int pdf_root;		/* root object id */

+static int pdf_pos;		/* current pdf file offset */

+static int *obj_off;		/* object offsets */

+static int obj_sz, obj_n;	/* number of pdf objects */

+static int *page_id;		/* page object ids */

+static int page_sz, page_n;	/* number of pages */

+static char **font_ps;		/* document font names */

+static int *font_id;		/* font object */

+static int *font_ct;		/* font content stream object */

+static int *font_ix;		/* font index */

+static int font_sz, font_n;	/* number of fonts */

+

+static struct sbuf *pg;		/* current page contents */

+static int o_f, o_s, o_m;	/* font and size */

+static int o_h, o_v;		/* current user position */

+static int p_h, p_v;		/* current output position */

+static int o_pf, p_pf;		/* output and pdf fonts; indices into o_fs[] */

+static int p_f, p_s, p_m;	/* output font */

+static int o_queued;		/* queued character type */

+static int *o_fs;		/* page fonts */

+static int o_fsn, o_fssz;	/* page fonts */

+

+/* print pdf output */

+static void pdfout(char *s, ...)

+{

+	va_list ap;

+	va_start(ap, s);

+	pdf_pos += vprintf(s, ap);

+	va_end(ap);

+}

+

+/* allocate an object number */

+static int obj_map(void)

+{

+	if (obj_n == obj_sz) {

+		obj_sz += 1024;

+		obj_off = mextend(obj_off, obj_n, obj_sz, sizeof(obj_off[0]));

+	}

+	return obj_n++;

+}

+

+/* start the definition of an object */

+static int obj_beg(int id)

+{

+	if (id <= 0)

+		id = obj_map();

+	obj_off[id] = pdf_pos;

+	pdfout("%d 0 obj\n", id);

+	return id;

+}

+

+/* end an object definition */

+static void obj_end(void)

+{

+	pdfout("endobj\n\n");

+}

+

+/* embed font; return stream object identifier */

+static int font_outdat(char *path, char *name, int ix)

+{

+	struct sbuf *sb;

+	FILE *fp;

+	int c, i, id;

+	for (i = 0; i < font_n; i++)

+		if (!strcmp(name, font_ps[i]) && font_ct[i] >= 0)

+			return font_ct[i];

+	fp = fopen(path, "r");

+	if (!fp)

+		return -1;

+	sb = sbuf_make();

+	c = fgetc(fp);

+	for (i = 0; c != EOF; i++) {

+		sbuf_printf(sb, "%02x", c);

+		c = fgetc(fp);

+		if (i % 40 == 39 && c != EOF)

+			sbuf_chr(sb, '\n');

+	}

+	sbuf_str(sb, ">\n");

+	fclose(fp);

+	id = obj_beg(0);

+	pdfout("<<\n");

+	pdfout("  /Filter /ASCIIHexDecode\n");

+	pdfout("  /Length %d\n", sbuf_len(sb));

+	pdfout("  /Length1 %d\n", i);

+	pdfout(">>\n");

+	pdfout("stream\n");

+	pdfout("%s", sbuf_buf(sb));

+	pdfout("endstream\n");

+	obj_end();

+	sbuf_free(sb);

+	return id;

+}

+

+/* write the object corresponding to font font_id[f] */

+static void font_out(struct font *fn, int f)

+{

+	int i;

+	int enc_obj, des_obj;

+	char *path = font_path(fn);

+	char *ext = path ? strrchr(path, '.') : NULL;

+	/* the encoding object */

+	enc_obj = obj_beg(0);

+	pdfout("<<\n");

+	pdfout("  /Type /Encoding\n");

+	pdfout("  /Differences [ 0");

+	for (i = 0; i < 256; i++) {

+		struct glyph *g = font_glget(fn, font_ix[f] * 256 + i);

+		pdfout(" /%s", g ? g->id : ".notdef");

+	}

+	pdfout(" ]\n");

+	pdfout(">>\n");

+	obj_end();

+	/* embedding the font */

+	if (ext && !strcmp(".ttf", ext))

+		font_ct[f] = font_outdat(path, font_ps[f], font_ix[f]);

+	/* the font descriptor */

+	des_obj = obj_beg(0);

+	pdfout("<<\n");

+	pdfout("  /Type /FontDescriptor\n");

+	pdfout("  /FontName /%s\n", font_ps[f]);

+	pdfout("  /Flags 0\n");

+	pdfout("  /MissingWidth 255\n");

+	pdfout("  /StemV 100\n");

+	pdfout("  /StemH 100\n");

+	pdfout("  /CapHeight 100\n");

+	pdfout("  /Ascent 100\n");

+	pdfout("  /Descent 100\n");

+	if (font_ct[f] >= 0)

+		pdfout("  /FontFile2 %d 0 R\n", font_ct[f]);

+	pdfout(">>\n");

+	obj_end();

+	/* the font object */

+	obj_beg(font_id[f]);

+	pdfout("<<\n");

+	pdfout("  /Type /Font\n");

+	pdfout("  /Subtype /%s\n",

+		ext && !strcmp(".ttf", ext) ? "TrueType" : "Type1");

+	pdfout("  /BaseFont /%s\n", font_ps[f]);

+	pdfout("  /FirstChar 0\n");

+	pdfout("  /LastChar 255\n");

+	pdfout("  /Widths [");

+	for (i = 0; i < 256; i++) {

+		struct glyph *g = font_glget(fn, font_ix[f] * 256 + i);

+		pdfout(" %d", (g ? g->wid : 0) * dev_res / 72);

+	}

+	pdfout(" ]\n");

+	pdfout("  /FontDescriptor %d 0 R\n", des_obj);

+	pdfout("  /Encoding %d 0 R\n", enc_obj);

+	pdfout(">>\n");

+	obj_end();

+}

+

+static int font_put(struct font *fn, int ix)

+{

+	int i;

+	char *name = font_name(fn);

+	for (i = 0; i < font_n; i++)

+		if (!strcmp(font_ps[i], font_name(fn)) && font_ix[i] == ix)

+			return i;

+	if (font_n == font_sz) {

+		font_sz += 128;

+		font_id = mextend(font_id, font_n, font_sz, sizeof(font_id[0]));

+		font_ps = mextend(font_ps, font_n, font_sz, sizeof(font_ps[0]));

+		font_ix = mextend(font_ix, font_n, font_sz, sizeof(font_ix[0]));

+		font_ct = mextend(font_ct, font_n, font_sz, sizeof(font_ct[0]));

+	}

+	font_id[font_n] = obj_map();

+	font_ix[font_n] = ix;

+	font_ps[font_n] = malloc(strlen(name) + 1);

+	font_ct[font_n] = -1;

+	strcpy(font_ps[font_n], name);

+	font_n++;

+	font_out(fn, font_n - 1);

+	return font_n - 1;

+}

+

+void out(char *s, ...)

+{

+}

+

+static void o_flush(void)

+{

+	if (o_queued == 1)

+		sbuf_printf(pg, ") Tj\n");

+	o_queued = 0;

+}

+

+static int o_loadfont(struct glyph *g)

+{

+	struct font *fn = g ? g->font : dev_font(o_f);

+	int ix = font_glnum(fn, g) / 256;

+	char *name = font_name(fn);

+	int i;

+	int id;

+	for (i = 0; i < o_fsn; i++)

+		if (!strcmp(name, font_ps[o_fs[i]]) && font_ix[o_fs[i]] == ix)

+			return i;

+	id = font_put(fn, ix);

+	if (o_fsn == o_fssz) {

+		o_fssz += 128;

+		o_fs = mextend(o_fs, o_fsn, o_fssz, sizeof(o_fs[0]));

+	}

+	o_fs[o_fsn++] = id;

+	return o_fsn - 1;

+}

+

+#define PREC		1000

+#define PRECN		"3"

+

+static void o_queue(struct glyph *g)

+{

+	int pos;

+	if (o_h != p_h || o_v != p_v) {

+		long h = o_h * PREC * 72 / dev_res;

+		long v = pdf_height * PREC - (o_v * PREC * 72 / dev_res);

+		o_flush();

+		sbuf_printf(pg, "1 0 0 1 %d.%0" PRECN "d %d.%0" PRECN "d Tm\n",

+			h / PREC, h % PREC, v / PREC, v % PREC);

+		p_h = o_h;

+		p_v = o_v;

+	}

+	if (!o_queued)

+		sbuf_printf(pg, "(");

+	o_queued = 1;

+	pos = font_glnum(g->font, g) % 256;

+	sbuf_printf(pg, "\\%d%d%d", (pos >> 6) & 7, (pos >> 3) & 7, pos & 7);

+	p_h += font_wid(g->font, o_s, g->wid);

+}

+

+static void out_fontup(void)

+{

+	if (o_m != p_m) {

+		o_flush();

+		p_m = o_m;

+	}

+	if (o_pf != p_pf || o_s != p_s) {

+		int f = o_fs[o_pf];

+		o_flush();

+		sbuf_printf(pg, "/%s.%d %d Tf\n", font_ps[f], font_ix[f], o_s);

+		p_pf = o_pf;

+		p_s = o_s;

+	}

+}

+

+void outc(char *c)

+{

+	struct glyph *g;

+	struct font *fn;

+	g = dev_glyph(c, o_f);

+	fn = g ? g->font : dev_font(o_f);

+	if (!g) {

+		outrel(*c == ' ' && fn ? font_swid(fn, o_s) : 1, 0);

+		return;

+	}

+	o_pf = o_loadfont(g);

+	out_fontup();

+	o_queue(g);

+}

+

+void outh(int h)

+{

+	o_h = h;

+}

+

+void outv(int v)

+{

+	o_v = v;

+}

+

+void outrel(int h, int v)

+{

+	o_h += h;

+	o_v += v;

+}

+

+void outfont(int f)

+{

+	if (dev_font(f))

+		o_f = f;

+}

+

+void outsize(int s)

+{

+	if (s > 0)

+		o_s = s;

+}

+

+void outcolor(int c)

+{

+	o_m = c;

+}

+

+void outrotate(int deg)

+{

+}

+

+void outeps(char *eps)

+{

+}

+

+void outlink(char *spec)

+{

+}

+

+void outpage(void)

+{

+	o_v = 0;

+	o_h = 0;

+	p_v = 0;

+	p_h = 0;

+	p_s = 0;

+	p_f = 0;

+	p_m = 0;

+}

+

+void outmnt(int f)

+{

+	if (p_f == f)

+		p_f = -1;

+}

+

+void outgname(int g)

+{

+}

+

+void drawbeg(void)

+{

+}

+

+void drawend(int close, int fill)

+{

+}

+

+void drawmbeg(char *s)

+{

+}

+

+void drawmend(char *s)

+{

+}

+

+void drawl(int h, int v)

+{

+}

+

+void drawc(int c)

+{

+}

+

+void drawe(int h, int v)

+{

+}

+

+void drawa(int h1, int v1, int h2, int v2)

+{

+}

+

+void draws(int h1, int v1, int h2, int v2)

+{

+}

+

+void ps_header(char *title, int pagewidth, int pageheight, int linewidth)

+{

+	pdf_title = title;

+	obj_map();

+	pdf_root = obj_map();

+	pdf_pages = obj_map();

+	pdf_title = title;

+	pdfout("%%PDF-1.6\n");

+	pdf_width = (pagewidth * 72 + 127) / 254;

+	pdf_height = (pageheight * 72 + 127) / 254;

+}

+

+void ps_trailer(int pages)

+{

+	int i;

+	int xref_off;

+	int info_id;

+	/* pdf pages object */

+	obj_beg(pdf_pages);

+	pdfout("<<\n");

+	pdfout("  /Type /Pages\n");

+	pdfout("  /MediaBox [ 0 0 %d %d ]\n", pdf_width, pdf_height);

+	pdfout("  /Count %d\n", page_n);

+	pdfout("  /Kids [");

+	for (i = 0; i < page_n; i++)

+		pdfout(" %d 0 R", page_id[i]);

+	pdfout(" ]\n");

+	pdfout(">>\n");

+	obj_end();

+	/* pdf root object */

+	obj_beg(pdf_root);

+	pdfout("<<\n");

+	pdfout("  /Type /Catalog\n");

+	pdfout("  /Pages %d 0 R\n", pdf_pages);

+	pdfout(">>\n");

+	obj_end();

+	/* info object */

+	info_id = obj_beg(0);

+	pdfout("<<\n");

+	if (pdf_title)

+		pdfout("  /Title (%s)\n", pdf_title);

+	pdfout("  /Creator (Neatroff)\n");

+	pdfout("  /Producer (Neatpost)\n");

+	pdfout(">>\n");

+	obj_end();

+	/* the xref */

+	xref_off = pdf_pos;

+	pdfout("xref\n");

+	pdfout("0 %d\n", obj_n);

+	pdfout("0000000000 65535 f \n");

+	for (i = 1; i < obj_n; i++)

+		pdfout("%010d 00000 n \n", obj_off[i]);

+	/* the trailer */

+	pdfout("trailer\n");

+	pdfout("<<\n");

+	pdfout("  /Size %d\n", obj_n);

+	pdfout("  /Root %d 0 R\n", pdf_root);

+	pdfout("  /Info %d 0 R\n", info_id);

+	pdfout(">>\n");

+	pdfout("startxref\n");

+	pdfout("%d\n", xref_off);

+	pdfout("%%%%EOF\n");

+	free(page_id);

+	free(obj_off);

+	for (i = 0; i < font_n; i++)

+		free(font_ps[i]);

+	free(font_ps);

+	free(font_ct);

+	free(font_id);

+	free(font_ix);

+}

+

+void ps_pagebeg(int n)

+{

+	pg = sbuf_make();

+	sbuf_printf(pg, "BT\n");

+}

+

+void ps_pageend(int n)

+{

+	int cont_id;

+	int i;

+	o_flush();

+	sbuf_printf(pg, "ET\n");

+	/* page contents */

+	cont_id = obj_beg(0);

+	pdfout("<<\n");

+	pdfout("  /Length %d\n", sbuf_len(pg));

+	pdfout(">>\n");

+	pdfout("stream\n");

+	pdfout("%s", sbuf_buf(pg));

+	pdfout("endstream\n");

+	obj_end();

+	/* the page object */

+	if (page_n == page_sz) {

+		page_sz += 1024;

+		page_id = mextend(page_id, page_n, page_sz, sizeof(page_id[0]));

+	}

+	page_id[page_n++] = obj_beg(0);

+	pdfout("<<\n");

+	pdfout("  /Type /Page\n");

+	pdfout("  /Parent %d 0 R\n", pdf_pages);

+	pdfout("  /Resources <<\n");

+	pdfout("    /Font <<");

+	for (i = 0; i < o_fsn; i++)

+		pdfout(" /%s.%d %d 0 R",

+			font_ps[o_fs[i]], font_ix[o_fs[i]], font_id[o_fs[i]]);

+	pdfout(" >>\n");

+	pdfout("  >>\n");

+	pdfout("  /Contents %d 0 R\n", cont_id);

+	pdfout(">>\n");

+	obj_end();

+	sbuf_free(pg);

+	free(o_fs);

+	o_fs = NULL;

+	o_fsn = 0;

+	o_fssz = 0;

+}

--- a/post.c

+++ b/post.c

@@ -1,7 +1,7 @@

 /*

- * NEATPOST: NEATROFF'S POSTSCRIPT POSTPROCESSOR

+ * NEATPOST: NEATROFF'S POSTSCRIPT/PDF POSTPROCESSOR

  *

- * Copyright (C) 2013-2017 Ali Gholami Rudi <ali at rudi dot ir>

+ * Copyright (C) 2013-2018 Ali Gholami Rudi <ali at rudi dot ir>

  *

  * Permission to use, copy, modify, and/or distribute this software for any

  * purpose with or without fee is hereby granted, provided that the above

@@ -433,15 +433,9 @@

 	ps_pageheight -= ps_pageheight % 10;

 }

-static void errdie(char *msg)

-{

-	fprintf(stderr, msg);

-	exit(1);

-}

-

 void *mextend(void *old, long oldsz, long newsz, int memsz)

 {

-	void *new = xmalloc(newsz * memsz);

+	void *new = malloc(newsz * memsz);

 	memcpy(new, old, oldsz * memsz);

 	memset(new + oldsz * memsz, 0, (newsz - oldsz) * memsz);

 	free(old);

@@ -448,14 +442,6 @@

 	return new;

 }

-void *xmalloc(long len)

-{

-	void *m = malloc(len);

-	if (!m)

-		errdie("neatroff: malloc() failed\n");

-	return m;

-}

-

 static char *usage =

 	"Usage: neatpost [options] <input >output\n"

 	"Options:\n"

@@ -485,7 +471,7 @@

 		}

 	}

 	post();

-	ps_trailer(o_pages, o_fonts);

+	ps_trailer(o_pages);

 	dev_close();

 	return 0;

 }

--- a/post.h

+++ b/post.h

@@ -1,6 +1,6 @@

 /* predefined array limits */

 #define PATHLEN		1024	/* path length */

-#define NFONTS		32	/* number of fonts */

+#define NFONTS		1024	/* number of fonts */

 #define FNLEN		64	/* font name length */

 #define GNLEN		32	/* glyph name length */

 #define ILNLEN		1000	/* line limit of input files */

@@ -41,6 +41,9 @@

 int font_wid(struct font *fn, int sz, int w);

 int font_swid(struct font *fn, int sz);

 char *font_name(struct font *fn);

+char *font_path(struct font *fn);

+int font_glnum(struct font *fn, struct glyph *g);

+struct glyph *font_glget(struct font *fn, int id);

 /* output functions */

 void out(char *s, ...);

@@ -57,7 +60,6 @@

 void outpage(void);

 void outmnt(int f);

 void outgname(int g);

-extern char o_fonts[];

 void drawbeg(void);

 void drawend(int close, int fill);

@@ -71,7 +73,7 @@

 /* postscript functions */

 void ps_header(char *title, int pagewidth, int pageheight, int linewidth);

-void ps_trailer(int pages, char *fonts);

+void ps_trailer(int pages);

 void ps_pagebeg(int n);

 void ps_pageend(int n);

@@ -102,5 +104,14 @@

 int dict_prefix(struct dict *d, char *key, int *idx);

 /* memory allocation */

-void *xmalloc(long len);

 void *mextend(void *old, long oldsz, long newsz, int memsz);

+

+/* string buffers */

+struct sbuf *sbuf_make(void);

+char *sbuf_buf(struct sbuf *sb);

+char *sbuf_done(struct sbuf *sb);

+void sbuf_free(struct sbuf *sb);

+int sbuf_len(struct sbuf *sbuf);

+void sbuf_str(struct sbuf *sbuf, char *s);

+void sbuf_printf(struct sbuf *sbuf, char *s, ...);

+void sbuf_chr(struct sbuf *sbuf, int c);

--- a/ps.c

+++ b/ps.c

@@ -1,5 +1,358 @@

+#include <ctype.h>

+#include <stdarg.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

 #include "post.h"

+static int o_f, o_s, o_m;	/* font and size */

+static int o_h, o_v;		/* current user position */

+static int p_f, p_s, p_m;	/* output postscript font */

+static int o_qtype;		/* queued character type */

+static int o_qv, o_qh, o_qend;	/* queued character position */

+static int o_rh, o_rv, o_rdeg;	/* previous rotation position and degree */

+static int o_gname;		/* use glyphshow for all glyphs */

+

+static char o_fonts[FNLEN * NFONTS] = " ";

+

+static void outvf(char *s, va_list ap)

+{

+	vfprintf(stdout, s, ap);

+}

+

+static void outf(char *s, ...)

+{

+	va_list ap;

+	va_start(ap, s);

+	outvf(s, ap);

+	va_end(ap);

+}

+

+static void o_flush(void)

+{

+	if (o_qtype == 1)

+		outf(") %d %d w\n", o_qh, o_qv);

+	if (o_qtype == 2)

+		outf("] %d %d g\n", o_qh, o_qv);

+	o_qtype = 0;

+}

+

+void outgname(int g)

+{

+	o_gname = g;

+}

+

+void outpage(void)

+{

+	o_flush();

+	o_v = 0;

+	o_h = 0;

+	p_s = 0;

+	p_f = 0;

+	p_m = 0;

+	o_rdeg = 0;

+}

+

+static void o_queue(struct glyph *g)

+{

+	int type = 1 + (g->pos <= 0 || o_gname);

+	if (o_qtype != type || o_qend != o_h || o_qv != o_v) {

+		o_flush();

+		o_qh = o_h;

+		o_qv = o_v;

+		o_qtype = type;

+		outf(type == 1 ? "(" : "[");

+	}

+	if (o_qtype == 1) {

+		if (g->pos >= ' ' && g->pos <= '~')

+			outf("%s%c", strchr("()\\", g->pos) ? "\\" : "", g->pos);

+		else

+			outf("\\%d%d%d", (g->pos >> 6) & 7,

+					(g->pos >> 3) & 7, g->pos & 7);

+	} else {

+		outf("/%s", g->id);

+	}

+	o_qend = o_h + font_wid(g->font, o_s, g->wid);

+}

+

+/* calls o_flush() if necessary */

+void out(char *s, ...)

+{

+	va_list ap;

+	o_flush();

+	va_start(ap, s);

+	outvf(s, ap);

+	va_end(ap);

+}

+

+static void out_fontup(int fid)

+{

+	char fnname[FNLEN];

+	struct font *fn;

+	if (o_m != p_m) {

+		out("%d %d %d rgb\n", CLR_R(o_m), CLR_G(o_m), CLR_B(o_m));

+		p_m = o_m;

+	}

+	if (fid != p_f || o_s != p_s) {

+		fn = dev_font(fid);

+		out("%d /%s f\n", o_s, font_name(fn));

+		p_f = fid;

+		p_s = o_s;

+		sprintf(fnname, " %s ", font_name(fn));

+		if (!strstr(o_fonts, fnname))

+			sprintf(strchr(o_fonts, '\0'), "%s ", font_name(fn));

+	}

+}

+

+void outc(char *c)

+{

+	struct glyph *g;

+	struct font *fn;

+	g = dev_glyph(c, o_f);

+	fn = g ? g->font : dev_font(o_f);

+	if (!g) {

+		outrel(*c == ' ' && fn ? font_swid(fn, o_s) : 1, 0);

+		return;

+	}

+	out_fontup(dev_fontid(fn));

+	o_queue(g);

+}

+

+void outh(int h)

+{

+	o_h = h;

+}

+

+void outv(int v)

+{

+	o_v = v;

+}

+

+void outrel(int h, int v)

+{

+	o_h += h;

+	o_v += v;

+}

+

+void outfont(int f)

+{

+	if (dev_font(f))

+		o_f = f;

+}

+

+/* a font was mounted at pos f */

+void outmnt(int f)

+{

+	if (p_f == f)

+		p_f = -1;

+}

+

+void outsize(int s)

+{

+	if (s > 0)

+		o_s = s;

+}

+

+void outcolor(int c)

+{

+	o_m = c;

+}

+

+void outrotate(int deg)

+{

+	o_flush();

+	out_fontup(o_f);

+	if (o_rdeg)

+		outf("%d %d %d rot\n", -o_rdeg, o_rh, o_rv);

+	o_rdeg = deg;

+	o_rh = o_h;

+	o_rv = o_v;

+	outf("%d %d %d rot\n", deg, o_h, o_v);

+}

+

+static int draw_path;	/* number of path segments */

+static int draw_point;	/* point was set for postscript newpath */

+

+static void drawmv(void)

+{

+	if (!draw_point)

+		outf("%d %d m ", o_h, o_v);

+	draw_point = 1;

+}

+

+/* start a multi-segment path */

+void drawmbeg(char *s)

+{

+	o_flush();

+	out_fontup(o_f);

+	draw_path = 1;

+	outf("gsave newpath %s\n", s);

+}

+

+/* end a multi-segment path */

+void drawmend(char *s)

+{

+	draw_path = 0;

+	draw_point = 0;

+	outf("%s grestore\n", s);

+}

+

+void drawbeg(void)

+{

+	o_flush();

+	out_fontup(o_f);

+	if (draw_path)

+		return;

+	outf("newpath ");

+}

+

+void drawend(int close, int fill)

+{

+	if (draw_path)

+		return;

+	draw_point = 0;

+	if (close)

+		outf("closepath ");

+	if (fill)

+		outf("fill\n");

+	else

+		outf("stroke\n");

+}

+

+void drawl(int h, int v)

+{

+	drawmv();

+	outrel(h, v);

+	outf("%d %d drawl ", o_h, o_v);

+}

+

+void drawc(int c)

+{

+	drawmv();

+	outrel(c, 0);

+	outf("%d %d drawe ", c, c);

+}

+

+void drawe(int h, int v)

+{

+	drawmv();

+	outrel(h, 0);

+	outf("%d %d drawe ", h, v);

+}

+

+void drawa(int h1, int v1, int h2, int v2)

+{

+	drawmv();

+	outf("%d %d %d %d drawa ", h1, v1, h2, v2);

+	outrel(h1 + h2, v1 + v2);

+}

+

+void draws(int h1, int v1, int h2, int v2)

+{

+	drawmv();

+	outf("%d %d %d %d %d %d draws ", o_h, o_v, o_h + h1, o_v + v1,

+		o_h + h1 + h2, o_v + v1 + v2);

+	outrel(h1, v1);

+}

+

+static char *strcut(char *dst, char *src)

+{

+	while (*src == ' ' || *src == '\n')

+		src++;

+	if (src[0] == '"') {

+		src++;

+		while (*src && (src[0] != '"' || src[1] == '"')) {

+			if (*src == '"')

+				src++;

+			*dst++ = *src++;

+		}

+		if (*src == '"')

+			src++;

+	} else {

+		while (*src && *src != ' ' && *src != '\n')

+			*dst++ = *src++;

+	}

+	*dst = '\0';

+	return src;

+}

+

+void outeps(char *spec)

+{

+	char eps[1 << 12];

+	char buf[1 << 12];

+	int llx, lly, urx, ury;

+	int hwid, vwid;

+	FILE *filp;

+	int nspec, nbb;

+	spec = strcut(eps, spec);

+	if (!eps[0])

+		return;

+	nspec = sscanf(spec, "%d %d", &hwid, &vwid);

+	if (nspec < 1)

+		hwid = 0;

+	if (nspec < 2)

+		vwid = 0;

+	if (!(filp = fopen(eps, "r")))

+		return;

+	if (!fgets(buf, sizeof(buf), filp) ||

+			(strcmp(buf, "%!PS-Adobe-2.0 EPSF-1.2\n") &&

+			strcmp(buf, "%!PS-Adobe-2.0 EPSF-2.0\n") &&

+			strcmp(buf, "%!PS-Adobe-3.0 EPSF-3.0\n"))) {

+		fclose(filp);

+		return;

+	}

+	nbb = 0;

+	while (fgets(buf, sizeof(buf), filp))

+		if (!strncmp(buf, "%%BoundingBox: ", 15))

+			if ((nbb = sscanf(buf + 15, "%d %d %d %d",

+					&llx, &lly, &urx, &ury)) == 4)

+				break;

+	fclose(filp);

+	if (nbb < 4)		/* no BoundingBox comment */

+		return;

+	if (hwid <= 0 && vwid <= 0)

+		hwid = (urx - llx) * dev_res / 72;

+	if (vwid <= 0)

+		vwid = (ury - lly) * hwid / (urx - llx);

+	if (hwid <= 0)

+		hwid = (urx - llx) * vwid / (ury - lly);

+	/* output the EPS file */

+	o_flush();

+	out_fontup(o_f);

+	outf("%d %d %d %d %d %d %d %d EPSFBEG\n",

+		llx, lly, hwid, urx - llx, vwid, ury - lly, o_h, o_v);

+	outf("%%%%BeginDocument: %s\n", eps);

+	filp = fopen(eps, "r");

+	while (fgets(buf, sizeof(buf), filp))

+		out("%s", buf);

+	fclose(filp);

+	outf("%%%%EndDocument\n");

+	outf("EPSFEND\n");

+}

+

+void outlink(char *spec)

+{

+	char lnk[1 << 12];

+	int hwid, vwid;

+	int nspec;

+	spec = strcut(lnk, spec);

+	if (!lnk[0] || (nspec = sscanf(spec, "%d %d", &hwid, &vwid)) != 2)

+		return;

+	o_flush();

+	if (lnk[0] == '#' || isdigit((unsigned char) lnk[0])) {

+		outf("[ /Rect [ %d %d t %d %d t ] %s%s "

+			"/Subtype /Link /LNK pdfmark\n",

+			o_h, o_v, o_h + hwid, o_v + vwid,

+			lnk[0] == '#' ? "/Dest /" : "/Page ",

+			lnk[0] == '#' ? lnk + 1 : lnk);

+	} else {

+		outf("[ /Rect [ %d %d t %d %d t ] "

+			"/Action << /Subtype /URI /URI (%s) >> /Open true "

+			"/Subtype /Link /LNK pdfmark\n",

+			o_h, o_v, o_h + hwid, o_v + vwid, lnk);

+	}

+}

+

 void ps_pagebeg(int n)

 {

 	out("%%%%Page: %d %d\n", n, n);

@@ -15,11 +368,11 @@

 	out("saveobj restore\n");

 }

-void ps_trailer(int pages, char *fonts)

+void ps_trailer(int pages)

 {

 	out("%%%%Trailer\n");

 	out("done\n");

-	out("%%%%DocumentFonts: %s\n", fonts);

+	out("%%%%DocumentFonts: %s\n", o_fonts);

 	out("%%%%Pages: %d\n", pages);

 	out("%%%%EOF\n");

 }

--- /dev/null

+++ b/sbuf.c

@@ -1,0 +1,95 @@

+/* variable length string buffer */

+#include <stdarg.h>

+#include <stdio.h>

+#include <stdlib.h>

+#include <string.h>

+#include "post.h"

+

+#define SBUFSZ		128

+#define ALIGN(n, a)	(((n) + (a) - 1) & ~((a) - 1))

+#define NEXTSZ(o, r)	ALIGN(MAX((o) * 2, (o) + (r)), SBUFSZ)

+

+struct sbuf {

+	char *s;		/* allocated buffer */

+	int s_n;		/* length of the string stored in s[] */

+	int s_sz;		/* size of memory allocated for s[] */

+};

+

+static void sbuf_extend(struct sbuf *sbuf, int newsz)

+{

+	char *s = sbuf->s;

+	sbuf->s_sz = newsz;

+	sbuf->s = malloc(sbuf->s_sz);

+	if (sbuf->s_n)

+		memcpy(sbuf->s, s, sbuf->s_n);

+	free(s);

+}

+

+struct sbuf *sbuf_make(void)

+{

+	struct sbuf *sb = malloc(sizeof(*sb));

+	memset(sb, 0, sizeof(*sb));

+	return sb;

+}

+

+char *sbuf_buf(struct sbuf *sb)

+{

+	if (!sb->s)

+		sbuf_extend(sb, 1);

+	sb->s[sb->s_n] = '\0';

+	return sb->s;

+}

+

+char *sbuf_done(struct sbuf *sb)

+{

+	char *s = sbuf_buf(sb);

+	free(sb);

+	return s;

+}

+

+void sbuf_free(struct sbuf *sb)

+{

+	free(sb->s);

+	free(sb);

+}

+

+void sbuf_chr(struct sbuf *sbuf, int c)

+{

+	if (sbuf->s_n + 2 >= sbuf->s_sz)

+		sbuf_extend(sbuf, NEXTSZ(sbuf->s_sz, 1));

+	sbuf->s[sbuf->s_n++] = c;

+}

+

+void sbuf_mem(struct sbuf *sbuf, char *s, int len)

+{

+	if (sbuf->s_n + len + 1 >= sbuf->s_sz)

+		sbuf_extend(sbuf, NEXTSZ(sbuf->s_sz, len + 1));

+	memcpy(sbuf->s + sbuf->s_n, s, len);

+	sbuf->s_n += len;

+}

+

+void sbuf_str(struct sbuf *sbuf, char *s)

+{

+	sbuf_mem(sbuf, s, strlen(s));

+}

+

+int sbuf_len(struct sbuf *sbuf)

+{

+	return sbuf->s_n;

+}

+

+void sbuf_cut(struct sbuf *sb, int len)

+{

+	if (sb->s_n > len)

+		sb->s_n = len;

+}

+

+void sbuf_printf(struct sbuf *sbuf, char *s, ...)

+{

+	char buf[256];

+	va_list ap;

+	va_start(ap, s);

+	vsnprintf(buf, sizeof(buf), s, ap);

+	va_end(ap);

+	sbuf_str(sbuf, buf);

+}

-- 

⑨