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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.8/src/MapLine.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.8/src/MapLine.cpp | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.8/src/MapLine.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.8/src/MapLine.cpp new file mode 100644 index 00000000000..d571d094890 --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-1.8/src/MapLine.cpp @@ -0,0 +1,276 @@ +/************************************************************************* +** MapLine.cpp ** +** ** +** This file is part of dvisvgm -- the DVI to SVG converter ** +** Copyright (C) 2005-2014 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 <sstream> +#include "InputBuffer.h" +#include "InputReader.h" +#include "MapLine.h" +#include "Subfont.h" + +using namespace std; + + +/** Constructs a MapLine object by parsing a single mapline from the given stream. */ +MapLine::MapLine (istream &is) + : _sfd(0), _fontindex(0), _slant(0), _bold(0), _extend(1) +{ + char buf[256]; + is.getline(buf, 256); + parse(buf); +} + + +// Some of the following functions have been derived from the dvipdfmx source file fontmap.c: +// http://cvs.ktug.or.kr/viewcvs/dvipdfmx/src/fontmap.c?revision=1.43&view=markup + + +/** Returns true if the given string is in dvips mapline format, and false if it's in dvipdfm format. + @param[in] line string to check */ +bool MapLine::isDVIPSFormat (const char *line) const { + if (strchr(line, '"') || strchr(line, '<')) // these chars are only present in dvips maps + return true; + char prevchar = ' '; + int entry_count=0; + for (const char *p=line; *p; ++p) { + if (isspace(prevchar)) { + if (*p == '-') // options starting with '-' are only present in dvipdfm map files + return false; + if (!isspace(*p)) + entry_count++; + } + prevchar = *p; + } + // tfm_name and ps_name only => dvips map + return entry_count == 2; +} + + +/** Separates main font name and subfont definition name from a given combined name. + * Example: "basename@sfdname@10" => {"basename10", "sfdname"} + * @param[in,out] fontname complete fontname; after separation: main fontname only + * @param[out] sfdname name of subfont definition + * @return true on success */ +static bool split_fontname (string &fontname, string &sfdname) { + size_t pos1; // index of first '@' + if ((pos1 = fontname.find('@')) != string::npos && pos1 > 0) { + size_t pos2; // index of second '@' + if ((pos2 = fontname.find('@', pos1+1)) != string::npos && pos2 > pos1+1) { + sfdname = fontname.substr(pos1+1, pos2-pos1-1); + fontname = fontname.substr(0, pos1) + fontname.substr(pos2+1); + return true; + } + } + return false; +} + + +/** Parses a single mapline and stores the scanned data in member variables. + * The line may either be given in dvips or dvipdfmx mapfile format. + * @param[in] line the mapline */ +void MapLine::parse (const char *line) { + CharInputBuffer ib(line, strlen(line)); + BufferInputReader ir(ib); + _texname = ir.getString(); + string sfdname; + split_fontname(_texname, sfdname); + if (!sfdname.empty()) + _sfd = SubfontDefinition::lookup(sfdname); + if (isDVIPSFormat(line)) + parseDVIPSLine(ir); + else + parseDVIPDFMLine(ir); +} + + +/** Parses a single line in dvips mapfile format. + * @param[in] ir the input stream must be assigned to this reader */ +void MapLine::parseDVIPSLine (InputReader &ir) { + ir.skipSpace(); + if (ir.peek() != '<' && ir.peek() != '"') + _psname = ir.getString(); + ir.skipSpace(); + while (ir.peek() == '<' || ir.peek() == '"') { + if (ir.peek() == '<') { + ir.get(); + if (ir.peek() == '[') + ir.get(); + string name = ir.getString(); + if (name.length() > 4 && name.substr(name.length()-4) == ".enc") + _encname = name.substr(0, name.length()-4); + else + _fontfname = name; + } + else { // ir.peek() == '"' => list of PS font operators + string options = ir.getQuotedString('"'); + StringInputBuffer sib(options); + BufferInputReader sir(sib); + while (!sir.eof()) { + double number; + if (sir.parseDouble(number)) { + // operator with preceding numeric parameter (value opstr) + string opstr = sir.getString(); + if (opstr == "SlantFont") + _slant = number; + else if (opstr == "ExtendFont") + _extend = number; + } + else { + // operator without parameter => skip for now + sir.getString(); + } + } + } + ir.skipSpace(); + } +} + + +static void throw_number_expected (char opt, bool integer_only=false) { + ostringstream oss; + oss << "option -" << opt << ": " << (integer_only ? "integer" : "floating point") << " value expected"; + throw MapLineException(oss.str()); +} + + +/** Parses a single line in dvipdfmx mapfile format. + * @param[in] ir the input stream must be assigned to this reader */ +void MapLine::parseDVIPDFMLine (InputReader &ir) { + ir.skipSpace(); + if (ir.peek() != '-') { + _encname = ir.getString(); + if (_encname == "default" || _encname == "none") + _encname.clear(); + } + ir.skipSpace(); + if (ir.peek() != '-') + _fontfname = ir.getString(); + if (!_fontfname.empty()) { + parseFilenameOptions(_fontfname); + } + ir.skipSpace(); + while (ir.peek() == '-') { + ir.get(); + char option = ir.get(); + if (!isprint(option)) + throw MapLineException("option character expected"); + ir.skipSpace(); + switch (option) { + case 's': // slant + if (!ir.parseDouble(_slant)) + throw_number_expected('s'); + break; + case 'e': // extend + if (!ir.parseDouble(_extend)) + throw_number_expected('e'); + break; + case 'b': // bold + if (!ir.parseDouble(_bold)) + throw_number_expected('b'); + break; + case 'r': //remap (deprecated) + break; + case 'i': // ttc index + if (!ir.parseInt(_fontindex, false)) + throw_number_expected('i', true); + break; + case 'p': // UCS plane + int dummy; + if (!ir.parseInt(dummy, false)) + throw_number_expected('p', true); + break; + case 'u': // to unicode + ir.getString(); + break; + case 'v': // stemV + int stemv; + if (!ir.parseInt(stemv, true)) + throw_number_expected('v', true); + break; + case 'm': // map single chars + ir.skipUntil("-"); + break; + case 'w': // writing mode (horizontal=0, vertical=1) + int vertical; + if (!ir.parseInt(vertical, false)) + throw_number_expected('w', true); + break; + default: + ostringstream oss; + oss << "invalid option: -" << option; + throw MapLineException(oss.str()); + } + ir.skipSpace(); + } +} + + +/** [:INDEX:][!]FONTNAME[/CSI][,VARIANT] */ +void MapLine::parseFilenameOptions (string fname) { + _fontfname = fname; + StringInputBuffer ib(fname); + BufferInputReader ir(ib); + if (ir.peek() == ':' && isdigit(ir.peek(1))) { // index given? + ir.get(); + _fontindex = ir.getInt(); // font index of file with multiple fonts + if (ir.peek() == ':') + ir.get(); + else + _fontindex = 0; + } + if (ir.peek() == '!') // no embedding + ir.get(); + + bool csi_given=false, style_given=false; + int pos; + if ((pos = ir.find('/')) >= 0) { // csi delimiter + csi_given = true; + _fontfname = ir.getString(pos); + } + else if ((pos = ir.find(',')) >= 0) { + style_given = true; + _fontfname = ir.getString(pos); + } + else + _fontfname = ir.getString(); + + if (csi_given) { + if ((pos = ir.find(',')) >= 0) { + style_given = true; + ir.getString(pos); // charcoll + } + else if (ir.eof()) + throw MapLineException("CSI specifier expected"); + else + ir.getString(); // charcoll + } + if (style_given) { + ir.get(); // skip ',' + if (ir.check("BoldItalic")) { + } + else if (ir.check("Bold")) { + } + else if (ir.check("Italic")) { + } + if (!ir.eof()) + throw MapLineException("invalid style given"); + } +} |