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+/*************************************************************************
+** FontMap.cpp **
+** **
+** This file is part of dvisvgm -- the DVI to SVG converter **
+** Copyright (C) 2005-2015 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] dirname 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(Directory::ET_FILE)) {
+ 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())
+{
+}
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