You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
407 lines
12 KiB
407 lines
12 KiB
/*
|
|
* Copyright (c) 1994 Paul Vojta. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* NOTE:
|
|
* xdvi is based on prior work as noted in the modification history, below.
|
|
*/
|
|
|
|
/*
|
|
* DVI previewer for X.
|
|
*
|
|
* Eric Cooper, CMU, September 1985.
|
|
*
|
|
* Code derived from dvi-imagen.c.
|
|
*
|
|
* Modification history:
|
|
* 1/1986 Modified for X.10 --Bob Scheifler, MIT LCS.
|
|
* 7/1988 Modified for X.11 --Mark Eichin, MIT
|
|
* 12/1988 Added 'R' option, toolkit, magnifying glass
|
|
* --Paul Vojta, UC Berkeley.
|
|
* 2/1989 Added tpic support --Jeffrey Lee, U of Toronto
|
|
* 4/1989 Modified for System V --Donald Richardson, Clarkson Univ.
|
|
* 3/1990 Added VMS support --Scott Allendorf, U of Iowa
|
|
* 7/1990 Added reflection mode --Michael Pak, Hebrew U of Jerusalem
|
|
* 1/1992 Added greyscale code --Till Brychcy, Techn. Univ. Muenchen
|
|
* and Lee Hetherington, MIT
|
|
* 4/1994 Added DPS support, bounding box
|
|
* --Ricardo Telichevesky
|
|
* and Luis Miguel Silveira, MIT RLE.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <kdebug.h>
|
|
#include <klocale.h>
|
|
#include <ktempfile.h>
|
|
#include <tqdir.h>
|
|
#include <tqfileinfo.h>
|
|
#include <stdlib.h>
|
|
#include <kprocio.h>
|
|
|
|
extern "C" {
|
|
#include "dvi.h"
|
|
}
|
|
|
|
#include "../kviewshell/pageSize.h"
|
|
#include "dviFile.h"
|
|
#include "fontpool.h"
|
|
#include "xdvi.h"
|
|
|
|
|
|
dvifile::dvifile(const dvifile *old, fontPool *fp)
|
|
{
|
|
errorMsg = TQString::null;
|
|
errorCounter = 0;
|
|
page_offset = 0;
|
|
suggestedPageSize = 0;
|
|
numberOfExternalPSFiles = 0;
|
|
numberOfExternalNONPSFiles = 0;
|
|
sourceSpecialMarker = old->sourceSpecialMarker;
|
|
|
|
dviData = old->dviData.copy();
|
|
|
|
filename = old->filename;
|
|
size_of_file = old->size_of_file;
|
|
end_pointer = dvi_Data()+size_of_file;
|
|
if (dvi_Data() == 0) {
|
|
kdError(4300) << "Not enough memory to copy the DVI-file." << endl;
|
|
return;
|
|
}
|
|
|
|
font_pool = fp;
|
|
filename = old->filename;
|
|
generatorString = old->generatorString;
|
|
total_pages = old->total_pages;
|
|
|
|
|
|
tn_table.clear();
|
|
process_preamble();
|
|
find_postamble();
|
|
read_postamble();
|
|
prepare_pages();
|
|
}
|
|
|
|
|
|
void dvifile::process_preamble()
|
|
{
|
|
command_pointer = dvi_Data();
|
|
|
|
Q_UINT8 magic_number = readUINT8();
|
|
if (magic_number != PRE) {
|
|
errorMsg = i18n("The DVI file does not start with the preamble.");
|
|
return;
|
|
}
|
|
magic_number = readUINT8();
|
|
if (magic_number != 2) {
|
|
errorMsg = i18n("The DVI file contains the wrong version of DVI output for this program. "
|
|
"Hint: If you use the typesetting system Omega, you have to use a special "
|
|
"program, such as oxdvi.");
|
|
return;
|
|
}
|
|
|
|
/** numerator, denominator and the magnification value that describe
|
|
how many centimeters there are in one TeX unit, as explained in
|
|
section A.3 of the DVI driver standard, Level 0, published by
|
|
the TUG DVI driver standards committee. */
|
|
Q_UINT32 numerator = readUINT32();
|
|
Q_UINT32 denominator = readUINT32();
|
|
_magnification = readUINT32();
|
|
|
|
cmPerDVIunit = (double(numerator) / double(denominator)) * (double(_magnification) / 1000.0) * (1.0 / 1e5);
|
|
|
|
|
|
// Read the generatorString (such as "TeX output ..." from the
|
|
// DVI-File). The variable "magic_number" holds the length of the
|
|
// string.
|
|
char job_id[300];
|
|
magic_number = readUINT8();
|
|
strncpy(job_id, (char *)command_pointer, magic_number);
|
|
job_id[magic_number] = '\0';
|
|
generatorString = job_id;
|
|
}
|
|
|
|
|
|
/** find_postamble locates the beginning of the postamble and leaves
|
|
the file ready to start reading at that location. */
|
|
|
|
void dvifile::find_postamble()
|
|
{
|
|
// Move backwards through the TRAILER bytes
|
|
command_pointer = dvi_Data() + size_of_file - 1;
|
|
while((*command_pointer == TRAILER) && (command_pointer > dvi_Data()))
|
|
command_pointer--;
|
|
if (command_pointer == dvi_Data()) {
|
|
errorMsg = i18n("The DVI file is badly corrupted. KDVI was not able to find the postamble.");
|
|
return;
|
|
}
|
|
|
|
// And this is finally the pointer to the beginning of the postamble
|
|
command_pointer -= 4;
|
|
beginning_of_postamble = readUINT32();
|
|
command_pointer = dvi_Data() + beginning_of_postamble;
|
|
}
|
|
|
|
|
|
void dvifile::read_postamble()
|
|
{
|
|
Q_UINT8 magic_byte = readUINT8();
|
|
if (magic_byte != POST) {
|
|
errorMsg = i18n("The postamble does not begin with the POST command.");
|
|
return;
|
|
}
|
|
last_page_offset = readUINT32();
|
|
|
|
// Skip the numerator, denominator and magnification, the largest
|
|
// box height and width and the maximal depth of the stack. These
|
|
// are not used at the moment.
|
|
command_pointer += 4 + 4 + 4 + 4 + 4 + 2;
|
|
|
|
// The number of pages is more interesting for us.
|
|
total_pages = readUINT16();
|
|
|
|
// As a next step, read the font definitions.
|
|
Q_UINT8 cmnd = readUINT8();
|
|
while (cmnd >= FNTDEF1 && cmnd <= FNTDEF4) {
|
|
Q_UINT32 TeXnumber = readUINT(cmnd-FNTDEF1+1);
|
|
Q_UINT32 checksum = readUINT32(); // Checksum of the font, as found by TeX in the TFM file
|
|
|
|
// Read scale and design factor, and the name of the font. All
|
|
// these are explained in section A.4 of the DVI driver standard,
|
|
// Level 0, published by the TUG DVI driver standards committee
|
|
Q_UINT32 scale = readUINT32();
|
|
Q_UINT32 design = readUINT32();
|
|
Q_UINT16 len = readUINT8() + readUINT8(); // Length of the font name, including the directory name
|
|
char *fontname = new char[len + 1];
|
|
strncpy(fontname, (char *)command_pointer, len );
|
|
fontname[len] = '\0';
|
|
command_pointer += len;
|
|
|
|
#ifdef DEBUG_FONTS
|
|
kdDebug(4300) << "Postamble: define font \"" << fontname << "\" scale=" << scale << " design=" << design << endl;
|
|
#endif
|
|
|
|
// According to section A.4 of the DVI driver standard, this font
|
|
// shall be enlarged by the following factor before it is used.
|
|
double enlargement_factor = (double(scale) * double(_magnification))/(double(design) * 1000.0);
|
|
|
|
if (font_pool != 0) {
|
|
TeXFontDefinition *fontp = font_pool->appendx(fontname, checksum, scale, enlargement_factor);
|
|
|
|
// Insert font in dictionary and make sure the dictionary is big
|
|
// enough.
|
|
if (tn_table.size()-2 <= tn_table.count())
|
|
// Not quite optimal. The size of the dictionary should be a
|
|
// prime for optimal performance. I don't care.
|
|
tn_table.resize(tn_table.size()*2);
|
|
tn_table.insert(TeXnumber, fontp);
|
|
}
|
|
|
|
// Read the next command
|
|
cmnd = readUINT8();
|
|
}
|
|
|
|
if (cmnd != POSTPOST) {
|
|
errorMsg = i18n("The postamble contained a command other than FNTDEF.");
|
|
return;
|
|
}
|
|
|
|
// Now we remove all those fonts from the memory which are no longer
|
|
// in use.
|
|
if (font_pool != 0)
|
|
font_pool->release_fonts();
|
|
}
|
|
|
|
|
|
void dvifile::prepare_pages()
|
|
{
|
|
#ifdef DEBUG_DVIFILE
|
|
kdDebug(4300) << "prepare_pages" << endl;
|
|
#endif
|
|
|
|
if (page_offset.resize(total_pages+1) == false) {
|
|
kdError(4300) << "No memory for page list!" << endl;
|
|
return;
|
|
}
|
|
for(int i=0; i<=total_pages; i++)
|
|
page_offset[i] = 0;
|
|
|
|
|
|
page_offset[total_pages] = beginning_of_postamble;
|
|
Q_UINT16 i = total_pages-1;
|
|
page_offset[i] = last_page_offset;
|
|
|
|
// Follow back pointers through pages in the DVI file, storing the
|
|
// offsets in the page_offset table.
|
|
while (i > 0) {
|
|
command_pointer = dvi_Data() + page_offset[i--];
|
|
if (readUINT8() != BOP) {
|
|
errorMsg = i18n("The page %1 does not start with the BOP command.").arg(i+1);
|
|
return;
|
|
}
|
|
command_pointer += 10 * 4;
|
|
page_offset[i] = readUINT32();
|
|
if ((dvi_Data()+page_offset[i] < dvi_Data())||(dvi_Data()+page_offset[i] > dvi_Data()+size_of_file))
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
dvifile::dvifile(const TQString& fname, fontPool* pool)
|
|
{
|
|
#ifdef DEBUG_DVIFILE
|
|
kdDebug(4300) << "init_dvi_file: " << fname << endl;
|
|
#endif
|
|
|
|
errorMsg = TQString::null;
|
|
errorCounter = 0;
|
|
page_offset = 0;
|
|
suggestedPageSize = 0;
|
|
numberOfExternalPSFiles = 0;
|
|
numberOfExternalNONPSFiles = 0;
|
|
font_pool = pool;
|
|
sourceSpecialMarker = true;
|
|
|
|
TQFile file(fname);
|
|
filename = file.name();
|
|
file.open( IO_ReadOnly );
|
|
size_of_file = file.size();
|
|
dviData.resize(size_of_file);
|
|
// Sets the end pointer for the bigEndianByteReader so that the
|
|
// whole memory buffer is readable
|
|
end_pointer = dvi_Data()+size_of_file;
|
|
if (dvi_Data() == 0) {
|
|
kdError() << i18n("Not enough memory to load the DVI-file.");
|
|
return;
|
|
}
|
|
file.readBlock((char *)dvi_Data(), size_of_file);
|
|
file.close();
|
|
if (file.status() != IO_Ok) {
|
|
kdError() << i18n("Could not load the DVI-file.");
|
|
return;
|
|
}
|
|
|
|
tn_table.clear();
|
|
|
|
process_preamble();
|
|
find_postamble();
|
|
read_postamble();
|
|
prepare_pages();
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
dvifile::~dvifile()
|
|
{
|
|
#ifdef DEBUG_DVIFILE
|
|
kdDebug(4300) << "destroy dvi-file" << endl;
|
|
#endif
|
|
|
|
// Delete converted PDF files
|
|
TQMap<TQString, TQString>::Iterator it;
|
|
for ( it = convertedFiles.begin(); it != convertedFiles.end(); ++it )
|
|
TQFile::remove(it.data());
|
|
|
|
if (suggestedPageSize != 0)
|
|
delete suggestedPageSize;
|
|
if (font_pool != 0)
|
|
font_pool->mark_fonts_as_unused();
|
|
}
|
|
|
|
|
|
void dvifile::renumber()
|
|
{
|
|
dviData.detach();
|
|
|
|
// Write the page number to the file, taking good care of byte
|
|
// orderings.
|
|
int wordSize;
|
|
bool bigEndian;
|
|
qSysInfo (&wordSize, &bigEndian);
|
|
|
|
for(Q_UINT32 i=1; i<=total_pages; i++) {
|
|
Q_UINT8 *ptr = dviData.data() + page_offset[i-1]+1;
|
|
Q_UINT8 *num = (Q_UINT8 *)&i;
|
|
for(Q_UINT8 j=0; j<4; j++)
|
|
if (bigEndian) {
|
|
*(ptr++) = num[0];
|
|
*(ptr++) = num[1];
|
|
*(ptr++) = num[2];
|
|
*(ptr++) = num[3];
|
|
} else {
|
|
*(ptr++) = num[3];
|
|
*(ptr++) = num[2];
|
|
*(ptr++) = num[1];
|
|
*(ptr++) = num[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
TQString dvifile::convertPDFtoPS(const TQString &PDFFilename)
|
|
{
|
|
// Check if the PDFFile is known
|
|
TQMap<TQString, TQString>::Iterator it = convertedFiles.find(PDFFilename);
|
|
if (it != convertedFiles.end()) {
|
|
// PDF-File is known. Good.
|
|
return it.data();
|
|
}
|
|
|
|
// Get the name of a temporary file
|
|
KTempFile tmpfile(TQString::null, ".ps");
|
|
TQString convertedFileName = tmpfile.name();
|
|
tmpfile.close();
|
|
tmpfile.unlink();
|
|
|
|
// Use pdf2ps to do the conversion
|
|
KProcIO proc;
|
|
proc << "pdf2ps" << PDFFilename << convertedFileName;
|
|
if (proc.start(KProcess::Block) == false)
|
|
convertedFileName = TQString::null; // Indicates that conversion failed, won't try again.
|
|
if (!TQFile::exists(convertedFileName))
|
|
convertedFileName = TQString::null; // Indicates that conversion failed, won't try again.
|
|
|
|
// Save name of converted file to buffer, so PDF file won't be
|
|
// converted again, and files can be deleted when *this is
|
|
// deconstructed.
|
|
convertedFiles[PDFFilename] = convertedFileName;
|
|
|
|
return convertedFileName;
|
|
}
|
|
|
|
|
|
bool dvifile::saveAs(const TQString &filename)
|
|
{
|
|
if (dvi_Data() == 0)
|
|
return false;
|
|
|
|
TQFile out(filename);
|
|
if (out.open( IO_Raw|IO_WriteOnly ) == false)
|
|
return false;
|
|
if (out.writeBlock ( (char *)(dvi_Data()), size_of_file ) == -1)
|
|
return false;
|
|
out.close();
|
|
return true;
|
|
}
|