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/* See LICENSE file for copyright and license details. */
#include "common.h"
int
libparsesfnt_parse_hmtx(
const char *data, size_t size,
struct libparsesfnt_hmtx_entry *infop,
const struct libparsesfnt_tabdir_entry *tag,
size_t first, size_t count)
{
return PARSE(LIBPARSESFNT_HMTX_ENTRY__, tag->offset, 0, 0, first, count, tag);
}
int
libparsesfnt_get_hmtx_lsb_subtable_length(
size_t *lengthp,
const struct libparsesfnt_tabdir_entry *tag, const struct libparsesfnt_hhea *hhea)
{
size_t off;
/* hhea->num_advances_in_hmtx_table is uint16_t, so overflow is impossible */
off = (size_t)hhea->num_advances_in_hmtx_table * 4;
if (off > tag->length || (tag->length - off) % 2) {
errno = EBFONT;
return -1;
}
*lengthp = (tag->length - off) / 2;
return 0;
}
int
libparsesfnt_parse_hmtx_lsb_subtable(
const char *data, size_t size,
struct libparsesfnt_hmtx_lsb_subtable_entry *infop,
const struct libparsesfnt_tabdir_entry *tag, const struct libparsesfnt_hhea *hhea,
size_t first, size_t count)
{
size_t off;
/* hhea->num_advances_in_hmtx_table is uint16_t, so overflow is impossible */
off = (size_t)hhea->num_advances_in_hmtx_table * 4;
return PARSE(LIBPARSESFNT_HMTX_LSB_SUBTABLE_ENTRY__, tag->offset, off, 0, first, count, NULL);
}
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