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      1 /*
      2  * Copyright  2007,2008,2009  Red Hat, Inc.
      3  *
      4  *  This is part of HarfBuzz, a text shaping library.
      5  *
      6  * Permission is hereby granted, without written agreement and without
      7  * license or royalty fees, to use, copy, modify, and distribute this
      8  * software and its documentation for any purpose, provided that the
      9  * above copyright notice and the following two paragraphs appear in
     10  * all copies of this software.
     11  *
     12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
     13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
     14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
     15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
     16  * DAMAGE.
     17  *
     18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
     19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
     20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
     21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
     22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
     23  *
     24  * Red Hat Author(s): Behdad Esfahbod
     25  */
     26 
     27 #include "hb-static.cc"
     28 #include "hb-open-file.hh"
     29 #include "hb-ot-layout-gdef-table.hh"
     30 #include "hb-ot-layout-gsubgpos.hh"
     31 
     32 #ifdef HAVE_GLIB
     33 #include <glib.h>
     34 #endif
     35 #include <stdlib.h>
     36 #include <stdio.h>
     37 
     38 
     39 using namespace OT;
     40 
     41 int
     42 main (int argc, char **argv)
     43 {
     44   if (argc != 2) {
     45     fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
     46     exit (1);
     47   }
     48 
     49   hb_blob_t *blob = hb_blob_create_from_file (argv[1]);
     50   unsigned int len;
     51   const char *font_data = hb_blob_get_data (blob, &len);
     52   printf ("Opened font file %s: %d bytes long\n", argv[1], len);
     53 
     54   hb_blob_t *font_blob = hb_sanitize_context_t().sanitize_blob<OpenTypeFontFile> (blob);
     55   const OpenTypeFontFile* sanitized = font_blob->as<OpenTypeFontFile> ();
     56   if (!font_blob->data)
     57   {
     58     printf ("Sanitization of the file wasn't successful. Exit");
     59     return 1;
     60   }
     61   const OpenTypeFontFile& ot = *sanitized;
     62 
     63 
     64   switch (ot.get_tag ()) {
     65   case OpenTypeFontFile::TrueTypeTag:
     66     printf ("OpenType font with TrueType outlines\n");
     67     break;
     68   case OpenTypeFontFile::CFFTag:
     69     printf ("OpenType font with CFF (Type1) outlines\n");
     70     break;
     71   case OpenTypeFontFile::TTCTag:
     72     printf ("TrueType Collection of OpenType fonts\n");
     73     break;
     74   case OpenTypeFontFile::TrueTag:
     75     printf ("Obsolete Apple TrueType font\n");
     76     break;
     77   case OpenTypeFontFile::Typ1Tag:
     78     printf ("Obsolete Apple Type1 font in SFNT container\n");
     79     break;
     80   case OpenTypeFontFile::DFontTag:
     81     printf ("DFont Mac Resource Fork\n");
     82     break;
     83   default:
     84     printf ("Unknown font format\n");
     85     break;
     86   }
     87 
     88   int num_fonts = ot.get_face_count ();
     89   printf ("%d font(s) found in file\n", num_fonts);
     90   for (int n_font = 0; n_font < num_fonts; n_font++) {
     91     const OpenTypeFontFace &font = ot.get_face (n_font);
     92     printf ("Font %d of %d:\n", n_font, num_fonts);
     93 
     94     int num_tables = font.get_table_count ();
     95     printf ("  %d table(s) found in font\n", num_tables);
     96     for (int n_table = 0; n_table < num_tables; n_table++) {
     97       const OpenTypeTable &table = font.get_table (n_table);
     98       printf ("  Table %2d of %2d: %.4s (0x%08x+0x%08x)\n", n_table, num_tables,
     99 	      (const char *) table.tag,
    100 	      (unsigned int) table.offset,
    101 	      (unsigned int) table.length);
    102 
    103       switch (table.tag) {
    104 
    105       case HB_OT_TAG_GSUB:
    106       case HB_OT_TAG_GPOS:
    107 	{
    108 
    109 	const GSUBGPOS &g = *CastP<GSUBGPOS> (font_data + table.offset);
    110 
    111 	int num_scripts = g.get_script_count ();
    112 	printf ("    %d script(s) found in table\n", num_scripts);
    113 	for (int n_script = 0; n_script < num_scripts; n_script++) {
    114 	  const Script &script = g.get_script (n_script);
    115 	  printf ("    Script %2d of %2d: %.4s\n", n_script, num_scripts,
    116 	          (const char *)g.get_script_tag(n_script));
    117 
    118 	  if (!script.has_default_lang_sys())
    119 	    printf ("      No default language system\n");
    120 	  int num_langsys = script.get_lang_sys_count ();
    121 	  printf ("      %d language system(s) found in script\n", num_langsys);
    122 	  for (int n_langsys = script.has_default_lang_sys() ? -1 : 0; n_langsys < num_langsys; n_langsys++) {
    123 	    const LangSys &langsys = n_langsys == -1
    124 				   ? script.get_default_lang_sys ()
    125 				   : script.get_lang_sys (n_langsys);
    126 	    if (n_langsys == -1)
    127 	      printf ("      Default Language System\n");
    128 	    else
    129 	      printf ("      Language System %2d of %2d: %.4s\n", n_langsys, num_langsys,
    130 		      (const char *)script.get_lang_sys_tag (n_langsys));
    131 	    if (!langsys.has_required_feature ())
    132 	      printf ("        No required feature\n");
    133 	    else
    134 	      printf ("        Required feature index: %d\n",
    135 		      langsys.get_required_feature_index ());
    136 
    137 	    int num_features = langsys.get_feature_count ();
    138 	    printf ("        %d feature(s) found in language system\n", num_features);
    139 	    for (int n_feature = 0; n_feature < num_features; n_feature++) {
    140 	      printf ("        Feature index %2d of %2d: %d\n", n_feature, num_features,
    141 	              langsys.get_feature_index (n_feature));
    142 	    }
    143 	  }
    144 	}
    145 
    146 	int num_features = g.get_feature_count ();
    147 	printf ("    %d feature(s) found in table\n", num_features);
    148 	for (int n_feature = 0; n_feature < num_features; n_feature++) {
    149 	  const Feature &feature = g.get_feature (n_feature);
    150 	  int num_lookups = feature.get_lookup_count ();
    151 	  printf ("    Feature %2d of %2d: %c%c%c%c\n", n_feature, num_features,
    152 	          HB_UNTAG(g.get_feature_tag(n_feature)));
    153 
    154 	  printf ("        %d lookup(s) found in feature\n", num_lookups);
    155 	  for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++) {
    156 	    printf ("        Lookup index %2d of %2d: %d\n", n_lookup, num_lookups,
    157 	            feature.get_lookup_index (n_lookup));
    158 	  }
    159 	}
    160 
    161 	int num_lookups = g.get_lookup_count ();
    162 	printf ("    %d lookup(s) found in table\n", num_lookups);
    163 	for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++) {
    164 	  const Lookup &lookup = g.get_lookup (n_lookup);
    165 	  printf ("    Lookup %2d of %2d: type %d, props 0x%04X\n", n_lookup, num_lookups,
    166 	          lookup.get_type(), lookup.get_props());
    167 	}
    168 
    169 	}
    170 	break;
    171 
    172       case GDEF::tableTag:
    173 	{
    174 
    175 	const GDEF &gdef = *CastP<GDEF> (font_data + table.offset);
    176 
    177 	printf ("    Has %sglyph classes\n",
    178 		  gdef.has_glyph_classes () ? "" : "no ");
    179 	printf ("    Has %smark attachment types\n",
    180 		  gdef.has_mark_attachment_types () ? "" : "no ");
    181 	printf ("    Has %sattach points\n",
    182 		  gdef.has_attach_points () ? "" : "no ");
    183 	printf ("    Has %slig carets\n",
    184 		  gdef.has_lig_carets () ? "" : "no ");
    185 	printf ("    Has %smark sets\n",
    186 		  gdef.has_mark_sets () ? "" : "no ");
    187 	break;
    188 	}
    189       }
    190     }
    191   }
    192 
    193   return 0;
    194 }
    195