mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-12-22 21:21:32 +00:00
Cleanup of getExtFromContents.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@3627 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Angus Leeming
parent
f77b81570d
commit
531b651032
@ -1,3 +1,7 @@
|
||||
2002-02-19 Angus Leeming <a.leeming@ic.ac.uk>
|
||||
|
||||
* filetools.C (getExtFromContents): cleanup.
|
||||
|
||||
2002-02-27 Jean-Marc Lasgouttes <lasgouttes@freesurf.fr>
|
||||
|
||||
* Makefile.am (SIGC_INCLUDES): add a -I directive for when
|
||||
|
||||
@ -993,97 +993,142 @@ string const GetExtension(string const & name)
|
||||
/// for no knowing contents return the extension. Without
|
||||
/// an extension and unknown contents we return "user"
|
||||
string const getExtFromContents(string const & filename) {
|
||||
if (filename.empty() || !IsFileReadable(filename))
|
||||
return string(); // paranoia check
|
||||
if (filename.empty() || !IsFileReadable(filename))
|
||||
// paranoia check
|
||||
return string();
|
||||
|
||||
ifstream ifs(filename.c_str());
|
||||
if (!ifs)
|
||||
return string(); // Couldn't open file...
|
||||
string const gzipStamp = "\037\213\010\010"; // gnuzip
|
||||
string const zipStamp = "PK"; // PKZIP
|
||||
string const compressStamp = "\037\177"; // compress
|
||||
int const max_count = 50; // Maximum strings to read
|
||||
int count = 0; // Counter of attempts.
|
||||
if (!ifs)
|
||||
// Couldn't open file...
|
||||
return string();
|
||||
|
||||
// gnuzip
|
||||
string const gzipStamp = "\037\213\010\010";
|
||||
|
||||
// PKZIP
|
||||
string const zipStamp = "PK";
|
||||
|
||||
// compress
|
||||
string const compressStamp = "\037\177";
|
||||
|
||||
// Maximum strings to read
|
||||
int const max_count = 50;
|
||||
|
||||
string str;
|
||||
bool firstLine = true;
|
||||
for (; count < max_count; ++count) {
|
||||
for (int count = 0; count < max_count; ++count) {
|
||||
if (ifs.eof()) {
|
||||
lyxerr[Debug::GRAPHICS] << "filetools(getExtFromContents)\n"
|
||||
"\tEnd of file reached and it wasn't found a known Type!" << endl;
|
||||
lyxerr[Debug::GRAPHICS]
|
||||
<< "filetools(getExtFromContents)\n"
|
||||
<< "\tFile type not recognised before EOF!"
|
||||
<< endl;
|
||||
break;
|
||||
}
|
||||
|
||||
ifs >> str;
|
||||
if (firstLine) {
|
||||
// at first we check for a zipped file, because this information
|
||||
// is saved in the first bytes of the file!
|
||||
// also some graphic formats which save the information
|
||||
// in the first line, too.
|
||||
if (str.substr(0,4) == gzipStamp)
|
||||
return "gzip";
|
||||
string const stamp = str.substr(0,2);
|
||||
if (stamp == zipStamp)
|
||||
return "zip";
|
||||
else if (stamp == compressStamp)
|
||||
return "compress";
|
||||
// the graphics part
|
||||
else if (stamp == "BM")
|
||||
return "bmp";
|
||||
else if (str.at(0) == 'P') { // PBM family
|
||||
switch (str.at(1)) {
|
||||
case '1':
|
||||
case '4':
|
||||
return "pbm";
|
||||
if (firstLine && str.size() >= 2) {
|
||||
// at first we check for a zipped file, because this
|
||||
// information is saved in the first bytes of the file!
|
||||
// also some graphic formats which save the information
|
||||
// in the first line, too.
|
||||
if (prefixIs(str, gzipStamp))
|
||||
return "gzip";
|
||||
|
||||
case '2':
|
||||
case '5':
|
||||
return "pgm";
|
||||
string const stamp = str.substr(0,2);
|
||||
|
||||
case '3':
|
||||
case '6':
|
||||
return "ppm";
|
||||
if (stamp == zipStamp)
|
||||
return "zip";
|
||||
|
||||
if (stamp == compressStamp)
|
||||
return "compress";
|
||||
|
||||
// the graphics part
|
||||
if (stamp == "BM")
|
||||
return "bmp";
|
||||
|
||||
if (stamp == "\001\332")
|
||||
return "sgi";
|
||||
|
||||
if ((stamp == "II") || (stamp == "MM"))
|
||||
return "tiff";
|
||||
|
||||
// PBM family
|
||||
// Dont need to use str.at(0), str.at(1) because
|
||||
// we already know that str.size() >= 2
|
||||
if (str[0] == 'P') {
|
||||
switch (str[1]) {
|
||||
case '1':
|
||||
case '4':
|
||||
return "pbm";
|
||||
|
||||
case '2':
|
||||
case '5':
|
||||
return "pgm";
|
||||
|
||||
case '3':
|
||||
case '6':
|
||||
return "ppm";
|
||||
}
|
||||
}
|
||||
}
|
||||
if (stamp == "\001\332")
|
||||
return "sgi";
|
||||
else if ((stamp == "II") || (stamp == "MM"))
|
||||
return "tiff";
|
||||
else if (str.substr(0,3) == "GIF")
|
||||
return "gif";
|
||||
// else if ((str.at(3) == 'i') && (str.at(0) == '\000') &&
|
||||
// (str.at(1) == '\000') && (str.at(2) == '\000'))
|
||||
// return "xwd";
|
||||
firstLine = false;
|
||||
|
||||
if (prefixIs(str, "GIF"))
|
||||
return "gif";
|
||||
|
||||
// prefixIs doesn't seem happy with this
|
||||
if (str.size() >= 4 &&
|
||||
str.substr(0,4) == "\000\000\000i")
|
||||
return "xwd";
|
||||
}
|
||||
if (contains(str,"EPSF")) // dummy, if we have wrong file
|
||||
return "eps"; // description like "%!PS-Adobe-2.0EPSF"
|
||||
else if (contains(str,"TGIF"))
|
||||
return "tgif";
|
||||
else if (contains(str,"Grace"))
|
||||
return "agr";
|
||||
else if (contains(str,"JFIF"))
|
||||
return "jpg";
|
||||
else if (contains(str,"%PDF"))
|
||||
return "pdf";
|
||||
else if (contains(str,"PNG"))
|
||||
return "png";
|
||||
else if (contains(str,"%!PS-Adobe")) { // eps or ps
|
||||
ifs >> str;
|
||||
if (contains(str,"EPSF"))
|
||||
|
||||
firstLine = false;
|
||||
|
||||
if (contains(str,"EPSF"))
|
||||
// dummy, if we have wrong file description like
|
||||
// description like "%!PS-Adobe-2.0EPSF"
|
||||
return "eps";
|
||||
else
|
||||
|
||||
if (contains(str,"TGIF"))
|
||||
return "tgif";
|
||||
|
||||
if (contains(str,"Grace"))
|
||||
return "agr";
|
||||
|
||||
if (contains(str,"JFIF"))
|
||||
return "jpg";
|
||||
|
||||
if (contains(str,"%PDF"))
|
||||
return "pdf";
|
||||
|
||||
if (contains(str,"PNG"))
|
||||
return "png";
|
||||
|
||||
if (contains(str,"%!PS-Adobe")) {
|
||||
// eps or ps
|
||||
ifs >> str;
|
||||
if (contains(str,"EPSF"))
|
||||
return "eps";
|
||||
return "ps";
|
||||
} else if (contains(str,"static char"))
|
||||
return "xbm";
|
||||
else if (contains(str,"XPM"))
|
||||
return "xpm";
|
||||
else if (contains(str,"BITPIX"))
|
||||
return "fits";
|
||||
}
|
||||
|
||||
if (contains(str,"static char"))
|
||||
return "xbm";
|
||||
|
||||
if (contains(str,"XPM"))
|
||||
return "xpm";
|
||||
|
||||
if (contains(str,"BITPIX"))
|
||||
return "fits";
|
||||
}
|
||||
lyxerr[Debug::GRAPHICS] << "filetools(getExtFromContents)\n"
|
||||
"\tCouldn't find a known Type!"
|
||||
"\twill use ext or a \"user\" defined format" << endl;
|
||||
|
||||
lyxerr[Debug::GRAPHICS]
|
||||
<< "filetools(getExtFromContents)\n"
|
||||
<< "\tCouldn't find a known Type!"
|
||||
<< "\twill use ext or a \"user\" defined format" << endl;
|
||||
|
||||
string const ext(GetExtension(filename));
|
||||
if (!ext.empty())
|
||||
return ext;
|
||||
return ext;
|
||||
|
||||
return "user";
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user