File Coverage

third_party/modest/source/myfont/name.c

Criterion	Covered	Total	%
statement	0	45	0.0
branch	0	20	0.0
condition			n/a
subroutine			n/a
pod			n/a
total	0	65	0.0

/*
 Copyright (C) 2016-2017 Alexander Borisov

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 Author: [e-mail] (Alexander Borisov)
*/

#include "myfont/name.h"

mystatus_t myfont_load_table_name(myfont_font_t *mf, uint8_t* font_data, size_t data_size)
{
    memset(&mf->table_name, 0, sizeof(myfont_table_name_t));

    if(mf->cache.tables_offset[MyFONT_TKEY_name] == 0)
        return MyFONT_STATUS_OK;

    myfont_table_name_t *tname = &mf->table_name;
    const uint32_t table_offset = mf->cache.tables_offset[MyFONT_TKEY_name];
    uint32_t pos = table_offset + 6;

    if(pos > data_size)
        return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;

    /* get current data */
    uint8_t *data = &font_data[table_offset];

    tname->format = myfont_read_u16(&data);
    tname->count = myfont_read_u16(&data);
    tname->stringOffset = myfont_read_u16(&data);

    pos = pos + (tname->count * 12);
    if(pos > data_size) {
        tname->count = 0;
        return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
    }

    myfont_record_t *record = (myfont_record_t *)myfont_calloc(mf, tname->count, sizeof(myfont_record_t));

    if(record == NULL)
        return MyFONT_STATUS_ERROR_MEMORY_ALLOCATION;

    for(uint16_t i = 0; i < tname->count; i++) {
        record[i].platformID = myfont_read_u16(&data);
        record[i].encodingID = myfont_read_u16(&data);
        record[i].languageID =myfont_read_u16(&data);
        record[i].nameID = myfont_read_u16(&data);
        record[i].length = myfont_read_u16(&data);
        record[i].offset = myfont_read_u16(&data);
    }

    tname->nameRecord = record;

    if(tname->format == 1)
    {
        pos += 2;
        if(pos > data_size)
            return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;

        tname->langTagCount = myfont_read_u16(&data);

        pos = pos + (tname->langTagCount * 4);
        if(pos > data_size) {
            tname->langTagCount = 0;
            return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
        }

        myfont_ltag_record_t *lang_record = (myfont_ltag_record_t *)myfont_calloc(mf, tname->langTagCount, sizeof(myfont_ltag_record_t));

        if(lang_record == NULL)
            return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;

        for(uint16_t i = 0; i < tname->count; i++) {
            lang_record[i].length = myfont_read_u16(&data);
            lang_record[i].offset = myfont_read_u16(&data);
        }

        tname->langTagRecord = lang_record;
    }

    return MyFONT_STATUS_OK;
}