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capture the set of codepoints passed by --unicodes

This commit is contained in:
Rod Sheeter 2018-02-06 15:31:14 -08:00 committed by Behdad Esfahbod
parent 25e9173fe8
commit 6c52d94fd1
1 changed files with 16 additions and 1 deletions
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17
util/hb-subset.cc
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@ -43,6 +43,7 @@ struct subset_consumer_t
const font_options_t *font_opts)
{
font = hb_font_reference (font_opts->get_font ());
codepoints = hb_set_create();
}
void consume_line (const char *text,
@ -50,6 +51,16 @@ struct subset_consumer_t
const char *text_before,
const char *text_after)
{
// text appears to be a g_string when set by --unicodes
// TODO(Q1) are gunichar and hbcodepoint_t interchangeable?
// TODO(Q1) does this only get called with at least 1 codepoint?
gchar *c = (gchar *)text;
do {
gunichar cp = g_utf8_get_char(c);
hb_codepoint_t hb_cp = cp; // TODO(Q1) is this safe?
hb_set_add(codepoints, hb_cp);
g_print (" U+%04X %" G_GINT32_FORMAT "\n", cp, cp);
} while ((c = g_utf8_find_next_char(c, text + text_len)) != nullptr);
}
hb_bool_t
@ -80,16 +91,19 @@ struct subset_consumer_t
{
// TODO(Q1) check for errors from creates and such
hb_subset_profile_t *subset_profile = hb_subset_profile_create();
hb_subset_input_t *subset_input = hb_subset_input_create (hb_set_get_empty ());
hb_subset_input_t *subset_input = hb_subset_input_create (codepoints);
hb_face_t *face = hb_font_get_face (font);
hb_subset_face_t *subset_face = hb_subset_face_create(face);
hb_blob_t *result = nullptr;
failed = !(hb_subset(subset_profile, subset_input, subset_face, &result)
&& write_file(options.output_file, result));
hb_subset_profile_destroy (subset_profile);
hb_subset_input_destroy (subset_input);
hb_set_destroy (codepoints);
hb_subset_face_destroy (subset_face);
hb_blob_destroy (result);
hb_font_destroy (font);
@ -101,6 +115,7 @@ struct subset_consumer_t
private:
output_options_t options;
hb_font_t *font;
hb_set_t *codepoints;
};
int