mirror of
https://github.com/lexborisov/Modest
synced 2024-11-25 07:09:35 +03:00
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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Copyright (C) 2016 Alexander Borisov
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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Author: lex.borisov@gmail.com (Alexander Borisov)
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*/
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#include "myfont/loca.h"
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mystatus_t myfont_load_table_loca(myfont_font_t* mf, uint8_t* font_data, size_t data_size)
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{
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memset(&mf->table_loca, 0, sizeof(myfont_table_loca_t));
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if(mf->cache.tables_offset[MyFONT_TKEY_loca] == 0)
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return MyFONT_STATUS_OK;
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myfont_table_loca_t *tloca = &mf->table_loca;
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uint32_t table_offset = mf->cache.tables_offset[MyFONT_TKEY_loca];
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/* get current data */
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uint8_t *data = &font_data[table_offset];
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uint16_t numGlyph = mf->table_maxp.numGlyphs;
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if(numGlyph == 0)
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return MyFONT_STATUS_ERROR_TABLE_BROKEN;
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numGlyph++;
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tloca->offsets = (uint32_t *)myfont_calloc(mf, numGlyph, sizeof(uint32_t));
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if(tloca->offsets == NULL)
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return MyFONT_STATUS_ERROR_MEMORY_ALLOCATION;
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if(mf->table_head.indexToLocFormat)
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{
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if(data_size < (table_offset + (numGlyph * 4))) {
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myfont_free(mf, tloca->offsets);
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return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
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}
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for(size_t i = 0; i < numGlyph; i++) {
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tloca->offsets[i] = myfont_read_u32(&data);
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}
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}
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else
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{
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if(data_size < (table_offset + (numGlyph * 2))) {
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myfont_free(mf, tloca->offsets);
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return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
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}
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for(size_t i = 0; i < numGlyph; i++) {
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tloca->offsets[i] = myfont_read_u16(&data) * 2;
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}
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}
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return MyFONT_STATUS_OK;
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}
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uint32_t myfont_loca_get_offset(struct myfont_font *mf, uint16_t glyph_index)
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{
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if(glyph_index >= mf->table_maxp.numGlyphs)
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return mf->table_loca.offsets[0];
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return mf->table_loca.offsets[glyph_index];
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}
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