harfbuzz/util/hb-subset.cc

92 lines
2.7 KiB
C++

/*
* Copyright © 2010 Behdad Esfahbod
* Copyright © 2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Garret Rieger, Rod Sheeter
*/
#include "main-font-text.hh"
/*
* Command line interface to the harfbuzz font subsetter.
*/
struct subset_consumer_t
{
subset_consumer_t (option_parser_t *parser)
: failed (false), options(parser) {}
void init (hb_buffer_t *buffer_,
const font_options_t *font_opts)
{
font = hb_font_reference (font_opts->get_font ());
}
void consume_line (const char *text,
unsigned int text_len,
const char *text_before,
const char *text_after)
{
}
void finish (const font_options_t *font_opts)
{
hb_face_t *face = hb_font_get_face (font);
hb_blob_t *result = hb_face_reference_blob (face);
unsigned int data_length;
const char* data = hb_blob_get_data (result, &data_length);
int fd_out = open(options.output_file, O_CREAT | O_WRONLY, S_IRWXU);
if (fd_out != -1) {
ssize_t bytes_written = write(fd_out, data, data_length);
if (bytes_written == -1) {
fprintf(stderr, "Unable to write output file");
failed = true;
} else if (bytes_written != data_length) {
fprintf(stderr, "Wrong number of bytes written");
failed = true;
}
} else {
fprintf(stderr, "Unable to open output file");
failed = true;
}
hb_blob_destroy (result);
hb_font_destroy (font);
}
public:
bool failed;
private:
output_options_t options;
hb_font_t *font;
};
int
main (int argc, char **argv)
{
main_font_text_t<subset_consumer_t, 10, 0> driver;
return driver.main (argc, argv);
}