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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.5.3/src/VFReader.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.5.3/src/VFReader.cpp | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.5.3/src/VFReader.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.5.3/src/VFReader.cpp deleted file mode 100644 index eb9ed4d22ee..00000000000 --- a/Build/source/texk/dvisvgm/dvisvgm-1.5.3/src/VFReader.cpp +++ /dev/null @@ -1,192 +0,0 @@ -/************************************************************************* -** VFReader.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 <sstream> -#include "Font.h" -#include "VFActions.h" -#include "VFReader.h" -#include "macros.h" - -using namespace std; - - -/** Converts a TFM fix point value to double (PS point units). */ -inline static double fix2double (FixWord fix) { - const double pt2bp = 72/72.27; - return double(fix)/(1 << 20)*pt2bp; -} - - -VFReader::VFReader (istream &is) - : StreamReader(is), _actions(0), _designSize(0) { -} - - -VFReader::~VFReader () { -} - - -VFActions* VFReader::replaceActions (VFActions *a) { - VFActions *ret = _actions; - _actions = a; - return ret; -} - - -/** Reads a single VF command from the current position of the input stream and calls the - * corresponding cmdFOO method. The execution can be influenced by a function of type ApproveOpcode. - * It takes an opcode and returns true if the command is supposed to be executed. - * @param[in] approve function to approve invocation of the action assigned to command - * @return opcode of the executed command */ -int VFReader::executeCommand (ApproveAction approve) { - int opcode = in().get(); - if (!in() || opcode < 0) // at end of file - throw VFException("invalid file"); - - bool approved = !approve || approve(opcode); - VFActions *actions = _actions; - if (!approved) - replaceActions(0); // disable actions - - if (opcode <= 241) // short character definition? - cmdShortChar(opcode); - else if (opcode >= 243 && opcode <= 246) // font definition? - cmdFontDef(opcode-243+1); - else { - switch (opcode) { - case 242: cmdLongChar(); break; // long character definition - case 247: cmdPre(); break; // preamble - case 248: cmdPost(); break; // postamble - default : { // invalid opcode - replaceActions(actions); // reenable actions - ostringstream oss; - oss << "undefined VF command (opcode " << opcode << ')'; - throw VFException(oss.str()); - } - } - } - replaceActions(actions); // reenable actions - return opcode; -} - - -bool VFReader::executeAll () { - in().clear(); // reset all status bits - if (!in()) - return false; - in().seekg(0); // move file pointer to first byte of the input stream - while (!in().eof() && executeCommand() != 248); // stop reading after post (248) - return true; -} - - -/// Returns true if op indicates the preamble or a font definition -static bool is_pre_or_fontdef (int op) {return op > 242;} -static bool is_chardef (int op) {return op < 243;} - - -bool VFReader::executePreambleAndFontDefs () { - in().clear(); - if (!in()) - return false; - in().seekg(0); // move file pointer to first byte of the input stream - while (!in().eof() && executeCommand(is_pre_or_fontdef) > 242); // stop reading after last font definition - return true; -} - - -bool VFReader::executeCharDefs () { - in().clear(); - if (!in()) - return false; - in().seekg(0); - while (!in().eof() && executeCommand(is_chardef) < 243); // stop reading after last char definition - return true; -} - -////////////////////////////////////////////////////////////////////////////// - -/** Reads and executes DVI preamble command. */ -void VFReader::cmdPre () { - UInt32 i = readUnsigned(1); // identification number (should be 2) - UInt32 k = readUnsigned(1); // length of following comment - string cmt = readString(k); // comment - UInt32 cs = readUnsigned(4); // check sum to be compared with TFM cecksum - UInt32 ds = readUnsigned(4); // design size (same as TFM design size) (fix_word) - _designSize = fix2double(ds); - if (i != 202) - throw VFException("invalid identification value in preamble"); - if (_actions) - _actions->preamble(cmt, cs, ds); -} - - -void VFReader::cmdPost () { - while ((readUnsigned(1)) == 248); // skip fill bytes - if (_actions) - _actions->postamble(); -} - - -void VFReader::cmdLongChar () { - UInt32 pl = readUnsigned(4); // packet length (length of DVI subroutine) - if (_actions) { - UInt32 cc = readUnsigned(4); // character code - readUnsigned(4); // character width from corresponding TFM file - vector<UInt8> *dvi = new vector<UInt8>(pl); // DVI subroutine - readBytes(pl, *dvi); - _actions->defineVFChar(cc, dvi); // call template method for user actions - } - else - in().seekg(8+pl, ios::cur); // skip remaining char definition bytes -} - - -/** Reads and executes short_char_x command. - * @param[in] pl packet length (length of DVI subroutine) */ -void VFReader::cmdShortChar (int pl) { - if (_actions) { - UInt32 cc = readUnsigned(1); // character code - readUnsigned(3); // character width from corresponding TFM file - vector<UInt8> *dvi = new vector<UInt8>(pl); // DVI subroutine - readBytes(pl, *dvi); - _actions->defineVFChar(cc, dvi); // call template method for user actions - } - else - in().seekg(4+pl, ios::cur); // skip char definition bytes -} - - -void VFReader::cmdFontDef (int len) { - UInt32 fontnum = readUnsigned(len); // font number - UInt32 checksum = readUnsigned(4); // font checksum (to be compared with corresponding TFM checksum) - UInt32 ssize = readUnsigned(4); // scaled size of font relative to design size (fix_word) - UInt32 dsize = readUnsigned(4); // design size of font (same as TFM design size) (fix_word) - UInt32 pathlen = readUnsigned(1); // length of font path - UInt32 namelen = readUnsigned(1); // length of font name - string fontpath = readString(pathlen); - string fontname = readString(namelen); - if (_actions) { - double ss = fix2double(ssize); - double ds = fix2double(dsize); - _actions->defineVFFont(fontnum, fontpath, fontname, checksum, ds, ss*_designSize); - } -} |