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/*************************************************************************
** FontCache.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2017 Martin Gieseking <martin.gieseking@uos.de> **
** **
** This program 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 3 of **
** the License, or (at your option) any later version. **
** **
** This program 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 this program; if not, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef FONTCACHE_HPP
#define FONTCACHE_HPP
#include <string>
#include <map>
#include "Glyph.hpp"
class FontCache
{
typedef std::map<int, Glyph> GlyphMap;
public:
struct FontInfo
{
std::string name; // fontname
uint16_t version; // file format version
uint32_t checksum; // CRC32 checksum of file data
uint32_t numchars; // number of characters
uint32_t numbytes; // number of bytes
uint32_t numcmds; // number of path commands
};
public:
FontCache () : _changed(false) {}
~FontCache () {clear();}
bool read (const char *fontname, const char *dir);
bool read (const char *fontname, std::istream &is);
bool write (const char *dir) const;
bool write (const char *fontname, const char *dir) const;
bool write (const char *fontname, std::ostream &os) const;
const Glyph* getGlyph (int c) const;
void setGlyph (int c, const Glyph &glyph);
void clear ();
const std::string& fontname () const {return _fontname;}
static bool fontinfo (const char *dirname, std::vector<FontInfo> &infos, std::vector<std::string> &invalid);
static bool fontinfo (std::istream &is, FontInfo &info);
static void fontinfo (const char *dirname, std::ostream &os, bool purge=false);
private:
static const uint8_t FORMAT_VERSION;
std::string _fontname;
GlyphMap _glyphs;
bool _changed;
};
#endif
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