477 lines
12 KiB
C++
477 lines
12 KiB
C++
/*
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* Copyright © 2010 Behdad Esfahbod
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* Copyright © 2011,2012 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod
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*/
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#include "batch.hh"
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#include "font-options.hh"
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const unsigned DEFAULT_FONT_SIZE = FONT_SIZE_UPEM;
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const unsigned SUBPIXEL_BITS = 0;
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struct info_t
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{
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void add_options (option_parser_t *parser)
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{
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GOptionEntry entries[] =
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{
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{"list-all", 0, 0, G_OPTION_ARG_NONE, &this->list_all, "List everything", nullptr},
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{"list-tables", 0, 0, G_OPTION_ARG_NONE, &this->list_tables, "List tables", nullptr},
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{"list-unicodes", 0, 0, G_OPTION_ARG_NONE, &this->list_unicodes, "List characters", nullptr},
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{"list-glyphs", 0, 0, G_OPTION_ARG_NONE, &this->list_glyphs, "List glyphs", nullptr},
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{"list-features", 0, 0, G_OPTION_ARG_NONE, &this->list_features, "List layout features", nullptr},
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#ifndef HB_NO_VAR
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{"list-variations",0, 0, G_OPTION_ARG_NONE, &this->list_variations, "List variations", nullptr},
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#endif
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{nullptr}
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};
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parser->add_group (entries,
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"query",
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"Query options:",
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"Options to query the font instance",
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this,
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false /* We add below. */);
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}
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protected:
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hb_face_t *face = nullptr;
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hb_font_t *font = nullptr;
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hb_bool_t verbose = true;
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hb_bool_t list_all = false;
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hb_bool_t list_tables = false;
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hb_bool_t list_unicodes = false;
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hb_bool_t list_glyphs = false;
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hb_bool_t list_features = false;
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#ifndef HB_NO_VAR
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hb_bool_t list_variations = false;
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#endif
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public:
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template <typename app_t>
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void operator () (app_t *app)
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{
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face = hb_face_reference (((font_options_t *) app)->face);
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font = hb_font_reference (((font_options_t *) app)->font);
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verbose = !app->quiet;
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if (list_all)
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{
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list_tables =
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list_unicodes =
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list_glyphs =
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list_features =
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#ifndef HB_NO_VAR
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list_variations =
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#endif
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true;
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}
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if (list_tables) _list_tables ();
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if (list_unicodes) _list_unicodes ();
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if (list_glyphs) _list_glyphs ();
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if (list_features) _list_features ();
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#ifndef HB_NO_VAR
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if (list_variations) _list_variations ();
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#endif
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hb_font_destroy (font);
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hb_face_destroy (face);
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}
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protected:
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void _list_tables ()
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{
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if (verbose)
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{
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printf ("\nFont table information:");
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printf ("\nTag Size\n");
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}
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unsigned count = hb_face_get_table_tags (face, 0, nullptr, nullptr);
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hb_tag_t *tags = (hb_tag_t *) calloc (count, sizeof (hb_tag_t));
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hb_face_get_table_tags (face, 0, &count, tags);
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for (unsigned i = 0; i < count; i++)
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{
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hb_tag_t tag = tags[i];
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hb_blob_t *blob = hb_face_reference_table (face, tag);
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printf ("%c%c%c%c: %8u bytes\n", HB_UNTAG (tag), hb_blob_get_length (blob));
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hb_blob_destroy (blob);
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}
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free (tags);
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}
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void
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_list_unicodes ()
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{
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if (verbose)
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{
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printf ("\nCharacter-set information:");
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printf ("\nUnicode Glyph name\n");
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}
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hb_face_t *face = hb_font_get_face (font);
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hb_set_t *unicodes = hb_set_create ();
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hb_map_t *cmap = hb_map_create ();
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hb_face_collect_nominal_glyph_mapping (face, cmap, unicodes);
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for (hb_codepoint_t u = HB_SET_VALUE_INVALID;
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hb_set_next (unicodes, &u);)
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{
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hb_codepoint_t gid = hb_map_get (cmap, u);
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char glyphname[64];
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hb_font_glyph_to_string (font, gid,
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glyphname, sizeof glyphname);
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printf ("U+%04X %s\n", u, glyphname);
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}
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hb_map_destroy (cmap);
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/* List variation-selector sequences. */
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hb_set_t *vars = hb_set_create ();
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hb_face_collect_variation_selectors (face, vars);
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for (hb_codepoint_t vs = HB_SET_VALUE_INVALID;
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hb_set_next (vars, &vs);)
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{
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hb_set_clear (unicodes);
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hb_face_collect_variation_unicodes (face, vs, unicodes);
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for (hb_codepoint_t u = HB_SET_VALUE_INVALID;
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hb_set_next (unicodes, &u);)
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{
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hb_codepoint_t gid = 0;
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bool b = hb_font_get_variation_glyph (font, u, vs, &gid);
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assert (b);
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char glyphname[64];
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hb_font_glyph_to_string (font, gid,
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glyphname, sizeof glyphname);
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printf ("U+%04X,U+%04X %s\n", vs, u, glyphname);
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}
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}
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hb_set_destroy (vars);
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hb_set_destroy (unicodes);
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}
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void
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_list_glyphs ()
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{
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if (verbose)
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{
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printf ("\nGlyph-set information:");
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printf ("\nGlyphID Glyph name\n");
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}
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hb_face_t *face = hb_font_get_face (font);
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unsigned num_glyphs = hb_face_get_glyph_count (face);
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for (hb_codepoint_t gid = 0; gid < num_glyphs; gid++)
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{
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char glyphname[64];
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hb_font_glyph_to_string (font, gid,
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glyphname, sizeof glyphname);
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printf ("%u %s\n", gid, glyphname);
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}
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}
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void
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_list_features ()
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{
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if (verbose)
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{
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printf ("\nLayout features information:\n");
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}
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hb_tag_t table_tags[] = {HB_OT_TAG_GSUB, HB_OT_TAG_GPOS, HB_TAG_NONE};
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auto language = hb_language_get_default ();
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hb_set_t *features = hb_set_create ();
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for (unsigned int i = 0; table_tags[i]; i++)
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{
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printf ("Table: %c%c%c%c\n", HB_UNTAG (table_tags[i]));
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hb_tag_t script_array[32];
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unsigned script_count = sizeof script_array / sizeof script_array[0];
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unsigned script_offset = 0;
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do
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{
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hb_ot_layout_table_get_script_tags (face, table_tags[i],
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script_offset,
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&script_count,
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script_array);
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for (unsigned script_index = 0; script_index < script_count; script_index++)
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{
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printf (" Script: %c%c%c%c\n", HB_UNTAG (script_array[script_index]));
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hb_tag_t language_array[32];
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unsigned language_count = sizeof language_array / sizeof language_array[0];
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unsigned language_offset = 0;
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do
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{
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hb_ot_layout_script_get_language_tags (face, table_tags[i],
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script_offset + script_index,
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language_offset,
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&language_count,
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language_array);
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for (unsigned language_index = 0; language_index < language_count; language_index++)
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{
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printf (" Language: %c%c%c%c\n", HB_UNTAG (language_array[language_index]));
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}
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language_offset += language_count;
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}
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while (language_count == sizeof language_array / sizeof language_array[0]);
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}
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script_offset += script_count;
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}
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while (script_count == sizeof script_array / sizeof script_array[0]);
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hb_set_clear (features);
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hb_tag_t feature_array[32];
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unsigned feature_count = sizeof feature_array / sizeof feature_array[0];
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unsigned feature_offset = 0;
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do
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{
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hb_ot_layout_table_get_feature_tags (face, table_tags[i],
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feature_offset,
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&feature_count,
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feature_array);
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for (unsigned feature_index = 0; feature_index < feature_count; feature_index++)
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{
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if (hb_set_has (features, feature_array[feature_index]))
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continue;
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hb_set_add (features, feature_array[feature_index]);
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hb_ot_name_id_t label_id;
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hb_ot_layout_feature_get_name_ids (face,
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table_tags[i],
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feature_offset + feature_index,
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&label_id,
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nullptr,
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nullptr,
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nullptr,
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nullptr);
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char name[64];
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unsigned name_len = sizeof name;
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hb_ot_name_get_utf8 (face, label_id,
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language,
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&name_len, name);
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printf (" Feature: %c%c%c%c", HB_UNTAG (feature_array[feature_index]));
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if (*name)
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printf (" \"%s\"", name);
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printf ("\n");
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}
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feature_offset += feature_count;
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}
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while (feature_count == sizeof feature_array / sizeof feature_array[0]);
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}
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hb_set_destroy (features);
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}
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#ifndef HB_NO_VAR
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void
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_list_variations ()
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{
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if (verbose)
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{
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printf ("\nFace variations information:\n");
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}
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hb_ot_var_axis_info_t *axes;
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unsigned count = hb_ot_var_get_axis_infos (face, 0, nullptr, nullptr);
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axes = (hb_ot_var_axis_info_t *) calloc (count, sizeof (hb_ot_var_axis_info_t));
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hb_ot_var_get_axis_infos (face, 0, &count, axes);
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auto language = hb_language_get_default ();
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bool has_hidden = false;
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if (verbose && count)
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{
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printf ("Varitation axes:\n");
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printf ("Tag: Minimum Default Maximum Name\n\n");
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}
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for (unsigned i = 0; i < count; i++)
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{
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const auto &axis = axes[i];
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if (axis.flags & HB_OT_VAR_AXIS_FLAG_HIDDEN)
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has_hidden = true;
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char name[64];
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unsigned name_len = sizeof name;
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hb_ot_name_get_utf8 (face, axis.name_id,
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language,
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&name_len, name);
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printf ("%c%c%c%c%s: %g %g %g %s\n",
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HB_UNTAG (axis.tag),
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axis.flags & HB_OT_VAR_AXIS_FLAG_HIDDEN ? "*" : "",
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(double) axis.min_value,
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(double) axis.default_value,
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(double) axis.max_value,
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name);
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}
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if (has_hidden)
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printf ("\n[*] Hidden axis\n");
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free (axes);
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axes = nullptr;
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count = hb_ot_var_get_named_instance_count (face);
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if (count)
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{
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if (verbose)
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{
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printf ("\n\nNamed instances: \n\n");
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}
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for (unsigned i = 0; i < count; i++)
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{
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char name[64];
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unsigned name_len = sizeof name;
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hb_ot_name_id_t name_id = hb_ot_var_named_instance_get_subfamily_name_id (face, i);
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hb_ot_name_get_utf8 (face, name_id,
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language,
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&name_len, name);
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unsigned coords_count = hb_ot_var_named_instance_get_design_coords (face, i, nullptr, nullptr);
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float* coords;
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coords = (float *) calloc (coords_count, sizeof (float));
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hb_ot_var_named_instance_get_design_coords (face, i, &coords_count, coords);
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printf ("%u. %-32s", i, name);
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for (unsigned j = 0; j < coords_count; j++)
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printf ("%g, ", (double) coords[j]);
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printf ("\n");
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free (coords);
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}
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}
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}
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#endif
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};
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template <typename consumer_t,
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typename font_options_type>
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struct main_font_t :
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option_parser_t,
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font_options_type,
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consumer_t
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{
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int operator () (int argc, char **argv)
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{
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add_options ();
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parse (&argc, &argv);
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consumer_t::operator () (this);
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return 0;
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}
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protected:
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void add_options ()
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{
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font_options_type::add_options (this);
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consumer_t::add_options (this);
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GOptionEntry entries[] =
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{
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{"quiet", 'q', 0, G_OPTION_ARG_NONE, &this->quiet, "Generate machine-readable output", nullptr},
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{G_OPTION_REMAINING, 0, G_OPTION_FLAG_IN_MAIN,
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G_OPTION_ARG_CALLBACK, (gpointer) &collect_rest, nullptr, "[FONT-FILE]"},
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{nullptr}
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};
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add_main_group (entries, this);
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option_parser_t::add_options ();
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}
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private:
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static gboolean
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collect_rest (const char *name G_GNUC_UNUSED,
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const char *arg,
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gpointer data,
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GError **error)
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{
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main_font_t *thiz = (main_font_t *) data;
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if (!thiz->font_file)
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{
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thiz->font_file = g_strdup (arg);
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return true;
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}
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
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"Too many arguments on the command line");
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return false;
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}
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public:
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hb_bool_t quiet = false;
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};
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int
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main (int argc, char **argv)
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{
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using main_t = main_font_t<info_t, font_options_t>;
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return batch_main<main_t> (argc, argv);
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}
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