125 lines
3.7 KiB
C++
125 lines
3.7 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 <stdio.h>
|
|
|
|
#include "main-font-text.hh"
|
|
#include "hb-subset.h"
|
|
|
|
/*
|
|
* Command line interface to the harfbuzz font subsetter.
|
|
*/
|
|
|
|
struct subset_consumer_t
|
|
{
|
|
subset_consumer_t (option_parser_t *parser)
|
|
: failed (false), options (parser), subset_options (parser), font (nullptr), input (nullptr) {}
|
|
|
|
void init (hb_buffer_t *buffer_,
|
|
const font_options_t *font_opts)
|
|
{
|
|
font = hb_font_reference (font_opts->get_font ());
|
|
input = hb_subset_input_create_or_fail ();
|
|
}
|
|
|
|
void consume_line (const char *text,
|
|
unsigned int text_len,
|
|
const char *text_before,
|
|
const char *text_after)
|
|
{
|
|
// TODO(Q1) does this only get called with at least 1 codepoint?
|
|
hb_set_t *codepoints = hb_subset_input_unicode_set (input);
|
|
gchar *c = (gchar *)text;
|
|
do {
|
|
gunichar cp = g_utf8_get_char(c);
|
|
hb_codepoint_t hb_cp = cp;
|
|
hb_set_add (codepoints, hb_cp);
|
|
} while ((c = g_utf8_find_next_char(c, text + text_len)) != nullptr);
|
|
}
|
|
|
|
hb_bool_t
|
|
write_file (const char *output_file, hb_blob_t *blob) {
|
|
unsigned int data_length;
|
|
const char* data = hb_blob_get_data (blob, &data_length);
|
|
|
|
FILE *fp_out = fopen(output_file, "wb");
|
|
if (fp_out == nullptr) {
|
|
fprintf(stderr, "Unable to open output file\n");
|
|
return false;
|
|
}
|
|
int bytes_written = fwrite(data, 1, data_length, fp_out);
|
|
|
|
fclose (fp_out);
|
|
|
|
if (bytes_written == -1) {
|
|
fprintf(stderr, "Unable to write output file\n");
|
|
return false;
|
|
}
|
|
if ((unsigned int) bytes_written != data_length) {
|
|
fprintf(stderr, "Expected %u bytes written, got %d\n", data_length,
|
|
bytes_written);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void finish (const font_options_t *font_opts)
|
|
{
|
|
hb_subset_input_set_drop_hints (input, subset_options.drop_hints);
|
|
|
|
hb_face_t *face = hb_font_get_face (font);
|
|
|
|
hb_face_t *new_face = hb_subset(face, input);
|
|
hb_blob_t *result = hb_face_reference_blob (new_face);
|
|
|
|
failed = !hb_blob_get_length (result);
|
|
if (!failed)
|
|
write_file (options.output_file, result);
|
|
|
|
hb_subset_input_destroy (input);
|
|
hb_blob_destroy (result);
|
|
hb_face_destroy (new_face);
|
|
hb_font_destroy (font);
|
|
}
|
|
|
|
public:
|
|
bool failed;
|
|
|
|
private:
|
|
output_options_t options;
|
|
subset_options_t subset_options;
|
|
hb_font_t *font;
|
|
hb_subset_input_t *input;
|
|
};
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
main_font_text_t<subset_consumer_t, 10, 0> driver;
|
|
return driver.main (argc, argv);
|
|
}
|