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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.5.1/src/FontMap.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.5.1/src/FontMap.cpp | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.5.1/src/FontMap.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.5.1/src/FontMap.cpp new file mode 100644 index 00000000000..d7f32808e26 --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-1.5.1/src/FontMap.cpp @@ -0,0 +1,305 @@ +/************************************************************************* +** FontMap.cpp ** +** ** +** This file is part of dvisvgm -- the DVI to SVG converter ** +** Copyright (C) 2005-2013 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/>. ** +*************************************************************************/ + +#include <config.h> +#include <cstring> +#include <fstream> +#include <iostream> +#include <limits> +#include <vector> +#include "CMap.h" +#include "Directory.h" +#include "FileFinder.h" +#include "FontManager.h" +#include "FontMap.h" +#include "MapLine.h" +#include "Message.h" +#include "Subfont.h" + +using namespace std; + + +FontMap::~FontMap () { + for (Iterator it=_entries.begin(); it != _entries.end(); ++it) + delete it->second; +} + + +/** Returns the singleton instance. */ +FontMap& FontMap::instance() { + static FontMap fontmap; + return fontmap; +} + + +/** Reads and evaluates a single font map file. + * @param[in] fname name of map file to read + * @param[in] mode selects how to integrate the map file entries into the global map tree + * @return true if file could be opened */ +bool FontMap::read (const string &fname, FontMap::Mode mode) { + ifstream ifs(fname.c_str()); + if (!ifs) + return false; + + int line_number = 1; + while (ifs) { + int c = ifs.peek(); + if (c < 0 || strchr("\n&#%;*", c)) // comment or empty line? + ifs.ignore(numeric_limits<int>::max(), '\n'); + else { + try { + MapLine mapline(ifs); + apply(mapline, mode); + } + catch (const MapLineException &e) { + Message::wstream(true) << fname << ", line " << line_number << ": " << e.what() << '\n'; + } + catch (const SubfontException &e) { + Message::wstream(true) << e.filename(); + if (e.lineno() > 0) + Message::wstream(false) << ", line " << e.lineno(); + Message::wstream(false) << e.what() << '\n'; + } + } + line_number++; + } + return true; +} + + +bool FontMap::read (const string &fname, char modechar) { + Mode mode; + switch (modechar) { + case '=': mode = FM_REPLACE; break; + case '-': mode = FM_REMOVE; break; + default : mode = FM_APPEND; + } + return read(fname, mode); +} + + +/** Applies a mapline according to the given mode (append, remove, replace). + * @param[in] mapline the mapline to be applied + * @param[in] mode mode to use + * @return true in case of success */ +bool FontMap::apply (const MapLine& mapline, FontMap::Mode mode) { + switch (mode) { + case FM_APPEND: + return append(mapline); + case FM_REMOVE: + return remove(mapline); + default: + return replace(mapline); + } +} + + +/** Applies a mapline according to the given mode (append, remove, replace). + * @param[in] mapline the mapline to be applied + * @param[in] modechar character that denotes the mode (+, -, or =) + * @return true in case of success */ +bool FontMap::apply (const MapLine& mapline, char modechar) { + Mode mode; + switch (modechar) { + case '=': mode = FM_REPLACE; break; + case '-': mode = FM_REMOVE; break; + default : mode = FM_APPEND; + } + return apply(mapline, mode); +} + + +/** Reads and evaluates a sequence of map files. Each map file is looked up in the local + * directory and the TeX file tree. + * @param[in] fname_seq comma-separated list of map file names + * @return true if at least one of the given map files was found */ +bool FontMap::read (const string &fname_seq) { + bool found = false; + size_t left=0; + while (left < fname_seq.length()) { + const char modechar = fname_seq[left]; + if (strchr("+-=", modechar)) + left++; + string fname; + size_t right = fname_seq.find(',', left); + if (right != string::npos) + fname = fname_seq.substr(left, right-left); + else { + fname = fname_seq.substr(left); + right = fname_seq.length(); + } + if (!fname.empty()) { + if (!read(fname, modechar)) { + if (const char *path = FileFinder::lookup(fname, false)) + found = found || read(path, modechar); + else + Message::wstream(true) << "map file " << fname << " not found\n"; + } + } + left = right+1; + } + return found; +} + + +/** Appends given map line data to the font map if there is no entry for the corresponding + * font in the map yet. + * @param[in] mapline parsed font data + * @return true if data has been appended */ +bool FontMap::append (const MapLine &mapline) { + bool ret = false; + if (!mapline.texname().empty()) { + if (!mapline.fontfname().empty() || !mapline.encname().empty()) { + vector<Subfont*> subfonts; + if (mapline.sfd()) + mapline.sfd()->subfonts(subfonts); + else + subfonts.push_back(0); + for (size_t i=0; i < subfonts.size(); i++) { + string fontname = mapline.texname()+(subfonts[i] ? subfonts[i]->id() : ""); + Iterator it = _entries.find(fontname); + if (it == _entries.end()) { + _entries[fontname] = new Entry(mapline, subfonts[i]); + ret = true; + } + } + } + } + return ret; +} + + +/** Replaces the map data of the given font. + * If the font is locked (because it's already in use) nothing happens. + * @param[in] mapline parsed font data + * @return true if data has been replaced */ +bool FontMap::replace (const MapLine &mapline) { + if (mapline.texname().empty()) + return false; + if (mapline.fontfname().empty() && mapline.encname().empty()) + return remove(mapline); + + vector<Subfont*> subfonts; + if (mapline.sfd()) + mapline.sfd()->subfonts(subfonts); + else + subfonts.push_back(0); + for (size_t i=0; i < subfonts.size(); i++) { + string fontname = mapline.texname()+(subfonts[i] ? subfonts[i]->id() : ""); + Iterator it = _entries.find(fontname); + if (it == _entries.end()) + _entries[fontname] = new Entry(mapline, subfonts[i]); + else if (!it->second->locked) + *it->second = Entry(mapline, subfonts[i]); + } + return true; +} + + +/** Removes the map entry of the given font. + * If the font is locked (because it's already in use) nothing happens. + * @param[in] mapline parsed font data + * @return true if entry has been removed */ +bool FontMap::remove (const MapLine &mapline) { + bool ret = false; + if (!mapline.texname().empty()) { + vector<Subfont*> subfonts; + if (mapline.sfd()) + mapline.sfd()->subfonts(subfonts); + else + subfonts.push_back(0); + for (size_t i=0; i < subfonts.size(); i++) { + string fontname = mapline.texname()+(subfonts[i] ? subfonts[i]->id() : ""); + Iterator it = _entries.find(fontname); + if (it != _entries.end() && !it->second->locked) { + _entries.erase(it); + ret = true; + } + } + } + return ret; +} + + +ostream& FontMap::write (ostream &os) const { + for (ConstIterator it=_entries.begin(); it != _entries.end(); ++it) + os << it->first << " -> " << it->second->fontname << " [" << it->second->encname << "]\n"; + return os; +} + + +/** Reads and evaluates all map files in the given directory. + * @param[in] path to directory containing the map files to be read */ +void FontMap::readdir (const string &dirname) { + Directory dir(dirname); + while (const char *fname = dir.read('f')) { + if (strlen(fname) >= 4 && strcmp(fname+strlen(fname)-4, ".map") == 0) { + string path = dirname + "/" + fname; + read(path.c_str()); + } + } +} + + +/** Returns name of font that is mapped to a given font. + * @param[in] fontname name of font whose mapped name is retrieved + * @returns name of mapped font */ +const FontMap::Entry* FontMap::lookup (const string &fontname) const { + ConstIterator it = _entries.find(fontname); + if (it == _entries.end()) + return 0; + return it->second; +} + + +/** Sets the lock flag for the given font in order to avoid changing the map data of this font. + * @param[in] fontname name of font to be locked */ +void FontMap::lockFont (const string& fontname) { + Iterator it = _entries.find(fontname); + if (it != _entries.end()) + it->second->locked = true; +} + + +/** Removes all (unlocked) entries from the font map. + * @param[in] unlocked_only if true, only unlocked entries are removed */ +void FontMap::clear (bool unlocked_only) { + if (!unlocked_only) + _entries.clear(); + else { + Iterator it=_entries.begin(); + while (it != _entries.end()) { + if (it->second->locked) + ++it; + else { + delete it->second; + _entries.erase(it++); + } + } + } +} + +///////////////////////////////////////////////// + +FontMap::Entry::Entry (const MapLine &mapline, Subfont *sf) + : fontname(mapline.fontfname()), encname(mapline.encname()), subfont(sf), fontindex(mapline.fontindex()), + locked(false), style(mapline.bold(), mapline.extend(), mapline.slant()) +{ +} |