118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/*
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* Copyright © 2011 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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#ifndef OUTPUT_OPTIONS_HH
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#define OUTPUT_OPTIONS_HH
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#include "options.hh"
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template <bool default_stdout = true>
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struct output_options_t
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{
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~output_options_t ()
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{
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g_free (output_file);
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g_free (output_format);
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if (out_fp && out_fp != stdout)
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fclose (out_fp);
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}
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void add_options (option_parser_t *parser,
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const char **supported_formats = nullptr)
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{
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const char *text = nullptr;
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if (supported_formats)
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{
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char *items = g_strjoinv ("/", const_cast<char **> (supported_formats));
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text = g_strdup_printf ("Set output format\n\n Supported output formats are: %s", items);
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g_free (items);
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parser->free_later ((char *) text);
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}
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GOptionEntry entries[] =
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{
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{"output-file", 'o', 0, G_OPTION_ARG_STRING, &this->output_file, "Set output file-name (default: stdout)","filename"},
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{"output-format", 'O', supported_formats ? 0 : G_OPTION_FLAG_HIDDEN,
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G_OPTION_ARG_STRING, &this->output_format, text, "format"},
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{nullptr}
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};
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parser->add_group (entries,
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"output",
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"Output destination & format options:",
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"Options for the destination & form of the output",
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this);
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}
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void post_parse (GError **error)
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{
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if (output_format)
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explicit_output_format = true;
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if (output_file && !output_format)
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{
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output_format = strrchr (output_file, '.');
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if (output_format)
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{
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output_format++; /* skip the dot */
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output_format = g_strdup (output_format);
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}
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}
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if (output_file && 0 != strcmp (output_file, "-"))
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out_fp = fopen (output_file, "wb");
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else
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{
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if (!default_stdout && !output_file)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
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"No output file was specified");
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return;
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}
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#if defined(_WIN32) || defined(__CYGWIN__)
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setmode (fileno (stdout), O_BINARY);
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#endif
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out_fp = stdout;
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}
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if (!out_fp)
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{
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g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
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"Cannot open output file `%s': %s",
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g_filename_display_name (output_file), strerror (errno));
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return;
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}
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}
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char *output_file = nullptr;
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char *output_format = nullptr;
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bool explicit_output_format = false;
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FILE *out_fp = nullptr;
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};
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#endif
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