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/* See LICENSE file for copyright and license details. */
#include "common.h"
int
libparsesfnt_parse_bloc(
const char *data, size_t size,
struct libparsesfnt_bloc *infop,
const struct libparsesfnt_tabdir_entry *tag)
{
return PARSE(LIBPARSESFNT_BLOC__, tag->offset, 0, 0, 0, 1, tag);
}
int
libparsesfnt_parse_bloc_v2_0_size_entries(
const char *data, size_t size,
struct libparsesfnt_bloc_v2_0_size_entry *infop,
const struct libparsesfnt_tabdir_entry *tag,
size_t first, size_t count)
{
return PARSE(LIBPARSESFNT_BLOC_V2_0_SIZE_ENTRY__, tag->offset, 8, 0, first, count, tag);
}
int
libparsesfnt_parse_bloc_v2_0_index_entries(
const char *data, size_t size,
struct libparsesfnt_bloc_v2_0_index_entry *infop,
const struct libparsesfnt_tabdir_entry *tag,
const struct libparsesfnt_bloc_v2_0_size_entry *size_entry,
size_t first, size_t count)
{
return PARSE(LIBPARSESFNT_BLOC_V2_0_INDEX_ENTRY__, tag->offset, size_entry->index_subtable_array_offset,
0, first, count, tag);
}
int
libparsesfnt_parse_bloc_v2_0_index_subentry(
const char *data, size_t size,
struct libparsesfnt_bloc_v2_0_index_subentry *infop,
const struct libparsesfnt_tabdir_entry *tag,
const struct libparsesfnt_bloc_v2_0_size_entry *size_entry,
const struct libparsesfnt_bloc_v2_0_index_entry *index_entry)
{
return PARSE(LIBPARSESFNT_BLOC_V2_0_INDEX_SUBENTRY__, tag->offset, size_entry->index_subtable_array_offset,
index_entry->additional_offset_to_index_subtable, 0, 1, tag);
}
int
libparsesfnt_parse_bloc_v2_0_format_1_offset_entries(
const char *data, size_t size,
uint32_t *infop,
const struct libparsesfnt_tabdir_entry *tag,
const struct libparsesfnt_bloc_v2_0_size_entry *size_entry,
const struct libparsesfnt_bloc_v2_0_index_entry *index_entry,
size_t first, size_t count)
{
return PARSE("4", (size_t)tag->offset + (size_t)size_entry->index_subtable_array_offset,
index_entry->additional_offset_to_index_subtable, 8, first, count, tag);
}
int
libparsesfnt_parse_bloc_v2_0_format_2_header(
const char *data, size_t size,
struct libparsesfnt_bloc_v2_0_index_subentry_format_2_header *infop,
const struct libparsesfnt_tabdir_entry *tag,
const struct libparsesfnt_bloc_v2_0_size_entry *size_entry,
const struct libparsesfnt_bloc_v2_0_index_entry *index_entry)
{
int ret;
ret = PARSE(LIBPARSESFNT_BLOC_V2_0_INDEX_SUBENTRY_FORMAT_2_HEADER__,
(size_t)tag->offset + (size_t)size_entry->index_subtable_array_offset,
index_entry->additional_offset_to_index_subtable, 8, 0, 1, tag);
if (!ret) {
if (!infop->image_size) {
errno = EBFONT;
return -1;
}
}
return ret;
}
int
libparsesfnt_parse_bloc_v2_0_format_3_offset_entries(
const char *data, size_t size,
uint16_t *infop,
const struct libparsesfnt_tabdir_entry *tag,
const struct libparsesfnt_bloc_v2_0_size_entry *size_entry,
const struct libparsesfnt_bloc_v2_0_index_entry *index_entry,
size_t first, size_t count)
{
return PARSE("2", (size_t)tag->offset + (size_t)size_entry->index_subtable_array_offset,
index_entry->additional_offset_to_index_subtable, 8, first, count, tag);
}
int
libparsesfnt_get_bloc_v2_0_format_1_offset(
size_t *offsetp,
const uint32_t offset,
const struct libparsesfnt_bloc_v2_0_index_subentry *subentry)
{
#if SIZE_MAX == UINT32_MAX /* we know that SIZE_MAX >= UINT32_MAX */
if (offset > UINT32_MAX - subentry->image_data_offset) {
errno = EFBIG;
return -1;
}
#endif
*offsetp = (size_t)offset + (size_t)subentry->image_data_offset;
return 0;
}
int
libparsesfnt_get_bloc_v2_0_format_2_offset(
size_t *offsetp,
size_t glyph_index,
const struct libparsesfnt_bloc_v2_0_index_entry *entry,
const struct libparsesfnt_bloc_v2_0_index_subentry *subentry,
struct libparsesfnt_bloc_v2_0_index_subentry_format_2_header *header)
{
if (glyph_index < (size_t)entry->first_glyph_index) {
errno = EINVAL;
return -1;
}
*offsetp = glyph_index - (size_t)entry->first_glyph_index;
if (*offsetp > (SIZE_MAX - (size_t)subentry->image_data_offset) / (size_t)header->image_size) {
errno = EFBIG;
return -1;
}
*offsetp = *offsetp * header->image_size + subentry->image_data_offset;
return 0;
}
int
libparsesfnt_get_bloc_v2_0_format_3_offset(
size_t *offsetp,
const uint16_t offset,
const struct libparsesfnt_bloc_v2_0_index_subentry *subentry)
{
#if SIZE_MAX == UINT32_MAX /* we know that SIZE_MAX >= UINT32_MAX */
if ((uint32_t)offset > UINT32_MAX - subentry->image_data_offset) {
errno = EFBIG;
return -1;
}
#endif
*offsetp = (size_t)offset + (size_t)subentry->image_data_offset;
return 0;
}
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