// see http://itexmac.sourceforge.net/pdfsync.html for the specification
int Pdfsync::RebuildIndex()
{
size_t len;
ScopedMem<char> data(file::ReadAll(syncfilepath, &len));
if (!data)
return PDFSYNCERR_SYNCFILE_CANNOT_BE_OPENED;
// convert the file data into a list of zero-terminated strings
str::TransChars(data, "\r\n", "\0\0");
// parse preamble (jobname and version marker)
char *line = data;
char *dataEnd = data + len;
// replace star by spaces (TeX uses stars instead of spaces in filenames)
str::TransChars(line, "*/", " \\");
ScopedMem<TCHAR> jobName(str::conv::FromAnsi(line));
jobName.Set(str::Join(jobName, _T(".tex")));
jobName.Set(PrependDir(jobName));
line = Advance0Line(line, dataEnd);
UINT versionNumber = 0;
if (!line || !str::Parse(line, "version %u", &versionNumber) || versionNumber != 1)
return PDFSYNCERR_SYNCFILE_CANNOT_BE_OPENED;
// reset synchronizer database
srcfiles.Reset();
lines.Reset();
points.Reset();
fileIndex.Reset();
sheetIndex.Reset();
Vec<size_t> filestack;
UINT page = 1;
sheetIndex.Append(0);
// add the initial tex file to the source file stack
filestack.Push(srcfiles.Count());
srcfiles.Append(jobName.StealData());
PdfsyncFileIndex findex = { 0 };
fileIndex.Append(findex);
PdfsyncLine psline;
PdfsyncPoint pspoint;
// parse data
UINT maxPageNo = engine->PageCount();
while ((line = Advance0Line(line, dataEnd))) {
switch (*line) {
case 'l':
psline.file = filestack.Last();
if (str::Parse(line, "l %u %u %u", &psline.record, &psline.line, &psline.column))
lines.Append(psline);
else if (str::Parse(line, "l %u %u", &psline.record, &psline.line)) {
psline.column = 0;
lines.Append(psline);
}
// else dbg("Bad 'l' line in the pdfsync file");
break;
case 's':
if (str::Parse(line, "s %u", &page))
sheetIndex.Append(points.Count());
// else dbg("Bad 's' line in the pdfsync file");
// if (0 == page || page > maxPageNo)
// dbg("'s' line with invalid page number in the pdfsync file");
break;
case 'p':
pspoint.page = page;
if (0 == page || page > maxPageNo)
/* ignore point for invalid page number */;
else if (str::Parse(line, "p %u %u %u", &pspoint.record, &pspoint.x, &pspoint.y))
points.Append(pspoint);
else if (str::Parse(line, "p* %u %u %u", &pspoint.record, &pspoint.x, &pspoint.y))
points.Append(pspoint);
// else dbg("Bad 'p' line in the pdfsync file");
break;
case '(':
{
ScopedMem<TCHAR> filename(str::conv::FromAnsi(line + 1));
// if the filename contains quotes then remove them
// TODO: this should never happen!?
if (filename[0] == '"' && filename[str::Len(filename) - 1] == '"')
filename.Set(str::DupN(filename + 1, str::Len(filename) - 2));
// undecorate the filepath: replace * by space and / by \
str::TransChars(filename, _T("*/"), _T(" \\"));
// if the file name extension is not specified then add the suffix '.tex'
if (str::IsEmpty(path::GetExt(filename)))
filename.Set(str::Join(filename, _T(".tex")));
// ensure that the path is absolute
if (PathIsRelative(filename))
filename.Set(PrependDir(filename));
filestack.Push(srcfiles.Count());
srcfiles.Append(filename.StealData());
findex.start = findex.end = lines.Count();
fileIndex.Append(findex);
}
break;
case ')':
if (filestack.Count() > 1)
fileIndex.At(filestack.Pop()).end = lines.Count();
// else dbg("Unbalanced ')' line in the pdfsync file");
break;
default:
// dbg("Ignoring invalid pdfsync line starting with '%c'", *line);
break;
}
}
fileIndex.At(0).end = lines.Count();
assert(filestack.Count() == 1);
return Synchronizer::RebuildIndex();
}
