Remove a bunch of unused variables spotted by Ubuntu 12.04's gcc.
[sgt/halibut] / bk_pdf.c
index 3a0ec75..6daebc6 100644 (file)
--- a/bk_pdf.c
+++ b/bk_pdf.c
@@ -14,9 +14,6 @@ paragraph *pdf_config_filename(char *filename)
     return cmdline_cfg_simple("pdf-filename", filename, NULL);
 }
 
-typedef struct object_Tag object;
-typedef struct objlist_Tag objlist;
-
 struct object_Tag {
     objlist *list;
     object *next;
@@ -31,10 +28,6 @@ struct objlist_Tag {
     object *head, *tail;
 };
 
-static object *new_object(objlist *list);
-static void objtext(object *o, char const *text);
-static void objstream(object *o, char const *text);
-static void objstream_len(object *o, char const *text, size_t len);
 static void pdf_string(void (*add)(object *, char const *),
                       object *, char const *);
 static void pdf_string_len(void (*add)(object *, char const *),
@@ -57,7 +50,6 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
     int font_index;
     font_encoding *fe;
     page_data *page;
-    int pageno;
     FILE *fp;
     char *filename;
     paragraph *p;
@@ -137,8 +129,11 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
     objtext(resources, "<<\n/ProcSet [/PDF/Text]\n/Font <<\n");
     for (fe = doc->fonts->head; fe; fe = fe->next) {
        char fname[40];
+       char buf[80];
        int i, prev;
-       object *font;
+       object *font, *fontdesc;
+       int flags;
+       font_info const *fi = fe->font->info;
 
        sprintf(fname, "f%d", font_index++);
        fe->name = dupstr(fname);
@@ -151,26 +146,13 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
        objref(resources, font);
        objtext(resources, "\n");
 
-       objtext(font, "<<\n/Type /Font\n/Subtype /Type1\n/Name /");
-       objtext(font, fe->name);
-       objtext(font, "\n/BaseFont /");
-       objtext(font, fe->font->info->name);
-       objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences [");
-
-       for (i = 0; i < 256; i++) {
-           char buf[20];
-           if (fe->vector[i] == NOGLYPH)
-               continue;
-           if (i != prev + 1) {
-               sprintf(buf, "\n%d", i);
-               objtext(font, buf);
-           }
-           objtext(font, i % 8 ? "/" : "\n/");
-           objtext(font, glyph_extern(fe->vector[i]));
-           prev = i;
-       }
 
-       objtext(font, "\n]\n>>\n");
+       /*
+        * Construct those parts of the font descriptor that don't dependd
+        * on the file format.
+        */
+       if (!is_std_font(fe->font->info->name)) {
+           fontdesc = new_object(&olist);
 
 #define FF_FIXEDPITCH  0x00000001
 #define FF_SERIF       0x00000002
@@ -182,36 +164,6 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
 #define FF_SMALLCAP    0x00020000
 #define FF_FORCEBOLD   0x00040000
 
-       if (!is_std_font(fe->font->info->name)){
-           object *widths = new_object(&olist);
-           object *fontdesc = new_object(&olist);
-           int firstchar = -1, lastchar = -1;
-           char buf[80];
-           font_info const *fi = fe->font->info;
-           int flags;
-           for (i = 0; i < 256; i++)
-               if (fe->vector[i] != NOGLYPH) {
-                   if (firstchar < 0) firstchar = i;
-                   lastchar = i;
-               }
-           sprintf(buf, "/FirstChar %d\n/LastChar %d\n/Widths ",
-                   firstchar, lastchar);
-           objtext(font, buf);
-           objref(font, widths);
-           objtext(font, "\n");
-           objtext(widths, "[\n");
-           for (i = firstchar; i <= lastchar; i++) {
-               double width;
-               if (fe->vector[i] == NOGLYPH)
-                   width = 0.0;
-               else
-                   width = find_width(fe->font, fe->vector[i]);
-               sprintf(buf, "%g\n", 1000.0 * width / FUNITS_PER_PT);
-               objtext(widths, buf);
-           }
-           objtext(widths, "]\n");
-           objtext(font, "/FontDescriptor ");
-           objref(font, fontdesc);
            objtext(fontdesc, "<<\n/Type /FontDescriptor\n/Name /");
            objtext(fontdesc, fi->name);
            flags = 0;
@@ -236,7 +188,179 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
            objtext(fontdesc, buf);
            sprintf(buf, "/StemV %g\n", fi->stemv);
            objtext(fontdesc, buf);
-           if (fi->fp) {
+       }
+
+       objtext(font, "<<\n/Type /Font\n/BaseFont /");
+       objtext(font, fe->font->info->name);
+       if (fe->font->info->filetype == TRUETYPE) {
+           object *cidfont = new_object(&olist);
+           object *cmap = new_object(&olist);
+           unsigned short ranges[256];
+           unsigned startidx, nranges, nchars;
+           int start;
+
+           objtext(font, "/Subtype/Type0\n/Encoding ");
+           objtext(cmap, "<</Type/CMap\n/CMapName/");
+           objtext(cmap, fe->name);
+           objtext(cmap, "\n/CIDSystemInfo<</Registry(Adobe)"
+                   "/Ordering(Identity)/Supplement 0>>\n");
+           objstream(cmap, "%!PS-Adobe-3.0 Resource-CMap\n"
+                     "%%DocumentNeededResources: procset CIDInit\n"
+                     "%%IncludeResource: procset CIDInit\n"
+                     "%%BeginResource: CMap ");
+           objstream(cmap, fe->name);
+           objstream(cmap, "\n%%Title (");
+           objstream(cmap, fe->name);
+           objstream(cmap, " Adobe Identity 0)\n%%Version: 1\n%%EndComments\n");
+           objstream(cmap, "/CIDInit/ProcSet findresource begin\n");
+           objstream(cmap, "12 dict begin begincmap\n");
+           objstream(cmap, "/CIDSystemInfo 3 dict dup begin\n"
+                     "/Registry(Adobe)def/Ordering(Identity)def"
+                     "/Supplement 0 def end def\n");
+           objstream(cmap, "/CMapName/");
+           objstream(cmap, fe->name);
+           objstream(cmap, " def/CMapType 0 def/WMode 0 def\n");
+           objstream(cmap, "1 begincodespacerange<00><FF>"
+                     "endcodespacerange\n");
+           start = -1; nranges = nchars = 0;
+           for (i = 0; i < 256; i++) {
+               unsigned idx;
+
+               ranges[i] = 0;
+               if (fe->vector[i] == NOGLYPH)
+                   continue;
+               idx = sfnt_glyphtoindex(fe->font->info->fontfile,
+                                       fe->vector[i]);
+               if (start >= 0 && idx - startidx == (unsigned)(i - start)) {
+                   if (ranges[start] == 1) {
+                       nranges++; nchars--;
+                   }
+                   ranges[start] = i - start + 1;
+               } else {
+                   ranges[i] = 1;
+                   start = i;
+                   startidx = idx;
+                   nchars++;
+               }
+           }
+           i = 0;
+           while (nranges) {
+               unsigned blk = nranges > 100 ? 100 : nranges;
+               nranges -= blk;
+               sprintf(buf, "%u ", blk);
+               objstream(cmap, buf);
+               objstream(cmap, "begincidrange\n");
+               while (blk) {
+                   if (ranges[i] > 1) {
+                       sprintf(buf, "<%02X>", i);
+                       objstream(cmap, buf);
+                       sprintf(buf, "<%02X>", i + ranges[i] - 1);
+                       objstream(cmap, buf);
+                       sprintf(buf, "%hu\n",
+                               sfnt_glyphtoindex(fe->font->info->fontfile,
+                                                 fe->vector[i]));
+                       objstream(cmap, buf);
+                       blk--;
+                   }
+                   i++;
+               }
+               objstream(cmap, "endcidrange\n");
+           }
+           i = 0;
+           while (nchars) {
+               unsigned blk = nchars > 100 ? 100 : nchars;
+               nchars -= blk;
+               sprintf(buf, "%u ", blk);
+               objstream(cmap, buf);
+               objstream(cmap, "begincidchar\n");
+               while (blk) {
+                   if (ranges[i] == 1) {
+                       sprintf(buf, "<%02X>", i);
+                       objstream(cmap, buf);
+                       sprintf(buf, "%hu\n",
+                               sfnt_glyphtoindex(fe->font->info->fontfile,
+                                                 fe->vector[i]));
+                       objstream(cmap, buf);
+                       blk--;
+                   }
+                   i++;
+               }
+               objstream(cmap, "endcidchar\n");
+           }
+           objstream(cmap, "endcmap CMapName currentdict /CMap "
+                     "defineresource pop end end\n%%EndResource\n%%EOF\n");
+
+           objref(font, cmap);
+           objtext(font, "\n/DescendantFonts[");
+           objref(font, cidfont);
+           objtext(font, "]\n");
+           objtext(cidfont, "<<\n/Type/Font\n/Subtype/CIDFontType2\n"
+                   "/BaseFont/");
+           objtext(cidfont, fe->font->info->name);
+           objtext(cidfont, "\n/CIDSystemInfo<</Registry(Adobe)"
+                   "/Ordering(Identity)/Supplement 0>>\n");
+           objtext(cidfont, "/FontDescriptor ");
+           objref(cidfont, fontdesc);
+           objtext(cidfont, "\n/W[0[");
+           for (i = 0; i < (int)sfnt_nglyphs(fe->font->info->fontfile); i++) {
+               char buf[20];
+               double width;
+               width = find_width(fe->font,
+                              sfnt_indextoglyph(fe->font->info->fontfile, i));
+               sprintf(buf, "%g ", 1000.0 * width / FUNITS_PER_PT);
+               objtext(cidfont, buf);
+           }
+           objtext(cidfont, "]]>>\n");
+       } else {
+           objtext(font, "/Subtype /Type1\n");
+           objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences [");
+
+           for (i = 0; i < 256; i++) {
+               char buf[20];
+               if (fe->vector[i] == NOGLYPH)
+                   continue;
+               if (i != prev + 1) {
+                   sprintf(buf, "\n%d", i);
+                   objtext(font, buf);
+               }
+               objtext(font, i % 8 ? "/" : "\n/");
+               objtext(font, glyph_extern(fe->vector[i]));
+               prev = i;
+           }
+
+           objtext(font, "\n]\n>>\n");
+           if (!is_std_font(fe->font->info->name)){
+               object *widths = new_object(&olist);
+               int firstchar = -1, lastchar = -1;
+               for (i = 0; i < 256; i++)
+                   if (fe->vector[i] != NOGLYPH) {
+                       if (firstchar < 0) firstchar = i;
+                       lastchar = i;
+                   }
+               sprintf(buf, "/FirstChar %d\n/LastChar %d\n/Widths ",
+                       firstchar, lastchar);
+               objtext(font, buf);
+               objref(font, widths);
+               objtext(font, "\n");
+               objtext(widths, "[\n");
+               for (i = firstchar; i <= lastchar; i++) {
+                   double width;
+                   if (fe->vector[i] == NOGLYPH)
+                       width = 0.0;
+                   else
+                       width = find_width(fe->font, fe->vector[i]);
+                   sprintf(buf, "%g\n", 1000.0 * width / FUNITS_PER_PT);
+                   objtext(widths, buf);
+               }
+               objtext(widths, "]\n");
+               objtext(font, "/FontDescriptor ");
+               objref(font, fontdesc);
+           }
+
+       }
+
+       if (!is_std_font(fe->font->info->name)) {
+           if (fi->fontfile && fi->filetype == TYPE1) {
                object *fontfile = new_object(&olist);
                size_t len;
                char *ffbuf;
@@ -254,6 +378,17 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
                objtext(fontfile, "/Length3 0\n");
                objtext(fontdesc, "/FontFile ");
                objref(fontdesc, fontfile);
+           } else if (fi->fontfile && fi->filetype == TRUETYPE) {
+               object *fontfile = new_object(&olist);
+               size_t len;
+               char *ffbuf;
+
+               sfnt_data((font_info *)fi, &ffbuf, &len);
+               objstream_len(fontfile, ffbuf, len);
+               sprintf(buf, "<<\n/Length1 %lu\n", (unsigned long)len);
+               objtext(fontfile, buf);
+               objtext(fontdesc, "/FontFile2 ");
+               objref(fontdesc, fontfile);
            }
            objtext(fontdesc, "\n>>\n");
        }
@@ -291,7 +426,6 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
     /*
      * Create and render the individual pages.
      */
-    pageno = 0;
     for (page = doc->pages; page; page = page->next) {
        object *opage, *cstr;
        rect *r;
@@ -487,13 +621,20 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
        rdaddsc(&rs, text);
 
        if (o->stream.text) {
+           if (!o->main.text)
+               rdaddsc(&o->main, "<<\n");
+#ifdef PDF_NOCOMPRESS
+           zlen = o->stream.pos;
+           zbuf = snewn(zlen, char);
+           memcpy(zbuf, o->stream.text, zlen);
+           sprintf(text, "/Length %d\n>>\n", zlen);
+#else
            zcontext = deflate_compress_new(DEFLATE_TYPE_ZLIB);
            deflate_compress_data(zcontext, o->stream.text, o->stream.pos,
                                  DEFLATE_END_OF_DATA, &zbuf, &zlen);
            deflate_compress_free(zcontext);
-           if (!o->main.text)
-               rdaddsc(&o->main, "<<\n");
            sprintf(text, "/Filter/FlateDecode\n/Length %d\n>>\n", zlen);
+#endif
            rdaddsc(&o->main, text);
        }
 
@@ -522,7 +663,10 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
      * Write out the PDF file.
      */
 
-    fp = fopen(filename, "wb");
+    if (!strcmp(filename, "-"))
+       fp = stdout;
+    else
+       fp = fopen(filename, "wb");
     if (!fp) {
        error(err_cantopenw, filename);
        return;
@@ -569,12 +713,13 @@ void pdf_backend(paragraph *sourceform, keywordlist *keywords,
            olist.tail->number + 1, cat->number, info->number);
     fprintf(fp, "startxref\n%d\n%%%%EOF\n", fileoff);
 
-    fclose(fp);
+    if (fp != stdout)
+       fclose(fp);
 
     sfree(filename);
 }
 
-static object *new_object(objlist *list)
+object *new_object(objlist *list)
 {
     object *obj = snew(object);
 
@@ -600,17 +745,17 @@ static object *new_object(objlist *list)
     return obj;
 }
 
-static void objtext(object *o, char const *text)
+void objtext(object *o, char const *text)
 {
     rdaddsc(&o->main, text);
 }
 
-static void objstream_len(object *o, char const *text, size_t len)
+void objstream_len(object *o, char const *text, size_t len)
 {
     rdaddsn(&o->stream, text, len);
 }
 
-static void objstream(object *o, char const *text)
+void objstream(object *o, char const *text)
 {
     rdaddsc(&o->stream, text);
 }