1/* 2 * Copyright © 2010 Behdad Esfahbod 3 * Copyright © 2011,2012 Google, Inc. 4 * 5 * This is part of HarfBuzz, a text shaping library. 6 * 7 * Permission is hereby granted, without written agreement and without 8 * license or royalty fees, to use, copy, modify, and distribute this 9 * software and its documentation for any purpose, provided that the 10 * above copyright notice and the following two paragraphs appear in 11 * all copies of this software. 12 * 13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 17 * DAMAGE. 18 * 19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 24 * 25 * Google Author(s): Behdad Esfahbod 26 */ 27 28#include "main-font-text.hh" 29#include "shape-consumer.hh" 30 31struct output_buffer_t 32{ 33 output_buffer_t (option_parser_t *parser) 34 : options (parser, hb_buffer_serialize_list_formats ()), 35 format (parser), 36 gs (nullptr), 37 line_no (0), 38 font (nullptr), 39 output_format (HB_BUFFER_SERIALIZE_FORMAT_INVALID), 40 format_flags (HB_BUFFER_SERIALIZE_FLAG_DEFAULT) {} 41 42 void init (hb_buffer_t *buffer, const font_options_t *font_opts) 43 { 44 options.get_file_handle (); 45 gs = g_string_new (nullptr); 46 line_no = 0; 47 font = hb_font_reference (font_opts->get_font ()); 48 49 if (!options.output_format) 50 output_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT; 51 else 52 output_format = hb_buffer_serialize_format_from_string (options.output_format, -1); 53 /* An empty "output_format" parameter basically skips output generating. 54 * Useful for benchmarking. */ 55 if ((!options.output_format || *options.output_format) && 56 !hb_buffer_serialize_format_to_string (output_format)) 57 { 58 if (options.explicit_output_format) 59 fail (false, "Unknown output format `%s'; supported formats are: %s", 60 options.output_format, 61 g_strjoinv ("/", const_cast<char**> (options.supported_formats))); 62 else 63 /* Just default to TEXT if not explicitly requested and the 64 * file extension is not recognized. */ 65 output_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT; 66 } 67 68 unsigned int flags = HB_BUFFER_SERIALIZE_FLAG_DEFAULT; 69 if (!format.show_glyph_names) 70 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES; 71 if (!format.show_clusters) 72 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS; 73 if (!format.show_positions) 74 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS; 75 if (format.show_extents) 76 flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS; 77 if (format.show_flags) 78 flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS; 79 format_flags = (hb_buffer_serialize_flags_t) flags; 80 81 if (format.trace) 82 hb_buffer_set_message_func (buffer, message_func, this, nullptr); 83 } 84 void new_line (void) 85 { 86 line_no++; 87 } 88 void consume_text (hb_buffer_t *buffer, 89 const char *text, 90 unsigned int text_len, 91 hb_bool_t utf8_clusters) 92 { 93 g_string_set_size (gs, 0); 94 format.serialize_buffer_of_text (buffer, line_no, text, text_len, font, gs); 95 fprintf (options.fp, "%s", gs->str); 96 } 97 void error (const char *message) 98 { 99 g_string_set_size (gs, 0); 100 format.serialize_message (line_no, "error", message, gs); 101 fprintf (options.fp, "%s", gs->str); 102 } 103 void consume_glyphs (hb_buffer_t *buffer, 104 const char *text, 105 unsigned int text_len, 106 hb_bool_t utf8_clusters) 107 { 108 g_string_set_size (gs, 0); 109 format.serialize_buffer_of_glyphs (buffer, line_no, text, text_len, font, 110 output_format, format_flags, gs); 111 fprintf (options.fp, "%s", gs->str); 112 } 113 void finish (hb_buffer_t *buffer, const font_options_t *font_opts) 114 { 115 hb_buffer_set_message_func (buffer, nullptr, nullptr, nullptr); 116 hb_font_destroy (font); 117 g_string_free (gs, true); 118 gs = nullptr; 119 font = nullptr; 120 } 121 122 static hb_bool_t 123 message_func (hb_buffer_t *buffer, 124 hb_font_t *font, 125 const char *message, 126 void *user_data) 127 { 128 output_buffer_t *that = (output_buffer_t *) user_data; 129 that->trace (buffer, font, message); 130 return true; 131 } 132 133 void 134 trace (hb_buffer_t *buffer, 135 hb_font_t *font, 136 const char *message) 137 { 138 g_string_set_size (gs, 0); 139 format.serialize_line_no (line_no, gs); 140 g_string_append_printf (gs, "trace: %s buffer: ", message); 141 format.serialize_glyphs (buffer, font, output_format, format_flags, gs); 142 g_string_append_c (gs, '\n'); 143 fprintf (options.fp, "%s", gs->str); 144 } 145 146 147 protected: 148 output_options_t options; 149 format_options_t format; 150 151 GString *gs; 152 unsigned int line_no; 153 hb_font_t *font; 154 hb_buffer_serialize_format_t output_format; 155 hb_buffer_serialize_flags_t format_flags; 156}; 157 158int 159main (int argc, char **argv) 160{ 161 main_font_text_t<shape_consumer_t<output_buffer_t>, FONT_SIZE_UPEM, 0> driver; 162 return driver.main (argc, argv); 163} 164