HarfBuzz text shaping engine
http://harfbuzz.github.io/
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131 lines
4.2 KiB
131 lines
4.2 KiB
/* |
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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 "main-font-text.hh" |
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#include "shape-consumer.hh" |
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struct output_buffer_t |
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{ |
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output_buffer_t (option_parser_t *parser) |
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: options (parser, hb_buffer_serialize_list_formats ()), |
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format (parser), |
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gs (NULL), |
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line_no (0), |
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font (NULL) {} |
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void init (const font_options_t *font_opts) |
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{ |
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options.get_file_handle (); |
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gs = g_string_new (NULL); |
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line_no = 0; |
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font = hb_font_reference (font_opts->get_font ()); |
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if (!options.output_format) |
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output_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT; |
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else |
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output_format = hb_buffer_serialize_format_from_string (options.output_format, -1); |
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/* An empty "output_format" parameter basically skips output generating. |
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* Useful for benchmarking. */ |
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if ((!options.output_format || *options.output_format) && |
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!hb_buffer_serialize_format_to_string (output_format)) |
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{ |
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if (options.explicit_output_format) |
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fail (false, "Unknown output format `%s'; supported formats are: %s", |
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options.output_format, |
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g_strjoinv ("/", const_cast<char**> (options.supported_formats))); |
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else |
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/* Just default to TEXT if not explicitly requested and the |
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* file extension is not recognized. */ |
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output_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT; |
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} |
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unsigned int flags = HB_BUFFER_SERIALIZE_FLAG_DEFAULT; |
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if (!format.show_glyph_names) |
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flags |= HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES; |
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if (!format.show_clusters) |
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flags |= HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS; |
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if (!format.show_positions) |
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flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS; |
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format_flags = (hb_buffer_serialize_flags_t) flags; |
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} |
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void new_line (void) |
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{ |
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line_no++; |
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} |
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void consume_text (hb_buffer_t *buffer, |
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const char *text, |
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unsigned int text_len, |
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hb_bool_t utf8_clusters) |
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{ |
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g_string_set_size (gs, 0); |
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format.serialize_buffer_of_text (buffer, line_no, text, text_len, font, gs); |
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fprintf (options.fp, "%s", gs->str); |
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} |
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void shape_failed (hb_buffer_t *buffer, |
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const char *text, |
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unsigned int text_len, |
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hb_bool_t utf8_clusters) |
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{ |
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g_string_set_size (gs, 0); |
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format.serialize_message (line_no, "msg: all shapers failed", gs); |
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fprintf (options.fp, "%s", gs->str); |
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} |
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void consume_glyphs (hb_buffer_t *buffer, |
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const char *text, |
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unsigned int text_len, |
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hb_bool_t utf8_clusters) |
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{ |
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g_string_set_size (gs, 0); |
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format.serialize_buffer_of_glyphs (buffer, line_no, text, text_len, font, |
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output_format, format_flags, gs); |
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fprintf (options.fp, "%s", gs->str); |
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} |
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void finish (const font_options_t *font_opts) |
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{ |
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hb_font_destroy (font); |
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g_string_free (gs, true); |
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gs = NULL; |
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font = NULL; |
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} |
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protected: |
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output_options_t options; |
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format_options_t format; |
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GString *gs; |
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unsigned int line_no; |
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hb_font_t *font; |
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hb_buffer_serialize_format_t output_format; |
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hb_buffer_serialize_flags_t format_flags; |
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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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main_font_text_t<shape_consumer_t<output_buffer_t>, FONT_SIZE_UPEM, 0> driver; |
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return driver.main (argc, argv); |
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}
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