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/*
Copyright (C) 2026 Carl Hetherington <cth@carlh.net>
This file is part of libttf.
libttf is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libttf 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with libttf. If not, see <http://www.gnu.org/licenses/>.
*/
#include "collection.h"
#include "util.h"
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <iostream>
using namespace ttf;
Collection::Collection(boost::filesystem::path const& ttf_file)
{
boost::filesystem::ifstream str(ttf_file, std::ios::binary);
std::vector<uint8_t> data(boost::filesystem::file_size(ttf_file));
str.read(reinterpret_cast<char*>(data.data()), data.size());
Source source(data);
read_source(source);
}
Collection::Collection(uint8_t const* data, int size)
{
Source source(data, size);
read_source(source);
}
void
Collection::read_source(Source& source)
{
auto const ttc_tag = source.get_uint32();
if (ttc_tag != 0x74746366) {
throw InvalidTTCTag(ttc_tag);
}
auto const major_version = source.get_uint16();
auto const minor_version = source.get_uint16();
auto const num_fonts = source.get_uint32();
if (num_fonts == 0) {
return;
}
uint32_t offset = source.get_uint32();
for (uint32_t i = 0; i < num_fonts; ++i) {
Source font_source(source, offset);
_fonts.push_back(Font(font_source));
}
}
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