HarfBuzz text shaping engine
http://harfbuzz.github.io/
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122 lines
3.3 KiB
122 lines
3.3 KiB
/* |
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* Copyright © 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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#include "main-font-text.hh" |
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#include "shape-options.hh" |
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#include "text-options.hh" |
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const unsigned DEFAULT_FONT_SIZE = FONT_SIZE_NONE; |
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const unsigned SUBPIXEL_BITS = 0; |
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struct shape_closure_consumer_t |
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{ |
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void add_options (struct option_parser_t *parser) |
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{ |
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parser->set_summary ("Find glyph set from input text under shaping closure."); |
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shaper.add_options (parser); |
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GOptionEntry entries[] = |
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{ |
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{"no-glyph-names", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &this->show_glyph_names, "Use glyph indices instead of names", nullptr}, |
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{nullptr} |
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}; |
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parser->add_group (entries, |
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"format", |
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"Format options:", |
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"Options controlling output formatting", |
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this); |
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} |
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void init (const font_options_t *font_opts) |
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{ |
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glyphs = hb_set_create (); |
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font = hb_font_reference (font_opts->font); |
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failed = false; |
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buffer = hb_buffer_create (); |
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} |
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template <typename text_options_t> |
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bool consume_line (text_options_t &text_opts) |
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{ |
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unsigned int text_len; |
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const char *text; |
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if (!(text = text_opts.get_line (&text_len))) |
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return false; |
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hb_set_clear (glyphs); |
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shaper.shape_closure (text, text_len, font, buffer, glyphs); |
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if (hb_set_is_empty (glyphs)) |
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return true; |
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/* Print it out! */ |
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bool first = true; |
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for (hb_codepoint_t i = -1; hb_set_next (glyphs, &i);) |
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{ |
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if (first) |
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first = false; |
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else |
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printf (" "); |
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if (show_glyph_names) |
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{ |
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char glyph_name[64]; |
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hb_font_glyph_to_string (font, i, glyph_name, sizeof (glyph_name)); |
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printf ("%s", glyph_name); |
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} else |
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printf ("%u", i); |
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} |
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return true; |
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} |
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void finish (const font_options_t *font_opts) |
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{ |
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printf ("\n"); |
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hb_font_destroy (font); |
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font = nullptr; |
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hb_set_destroy (glyphs); |
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glyphs = nullptr; |
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hb_buffer_destroy (buffer); |
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buffer = nullptr; |
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} |
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bool failed; |
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protected: |
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shape_options_t shaper; |
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hb_bool_t show_glyph_names = false; |
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hb_set_t *glyphs = nullptr; |
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hb_font_t *font = nullptr; |
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hb_buffer_t *buffer = nullptr; |
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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_text_t<shape_closure_consumer_t, font_options_t, text_options_t>; |
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return batch_main<main_t> (argc, argv); |
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}
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