mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-09 18:31:04 +00:00
Make guessFormatFromContents() a bit more private, since it is not supposed
to be used in new code. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@40790 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Georg Baum
parent
26e5f1a8ec
commit
de6e4a2937
189
src/Format.cpp
189
src/Format.cpp
@ -182,6 +182,193 @@ Format const * Formats::getFormat(string const & name) const
|
||||
}
|
||||
|
||||
|
||||
namespace {
|
||||
|
||||
/** Guess the file format name (as in Format::name()) from contents.
|
||||
* Normally you don't want to use this directly, but rather
|
||||
* Formats::getFormatFromFile().
|
||||
*/
|
||||
string guessFormatFromContents(FileName const & fn)
|
||||
{
|
||||
// the different filetypes and what they contain in one of the first lines
|
||||
// (dots are any characters). (Herbert 20020131)
|
||||
// AGR Grace...
|
||||
// BMP BM...
|
||||
// EPS %!PS-Adobe-3.0 EPSF...
|
||||
// FIG #FIG...
|
||||
// FITS ...BITPIX...
|
||||
// GIF GIF...
|
||||
// JPG JFIF
|
||||
// PDF %PDF-...
|
||||
// PNG .PNG...
|
||||
// PBM P1... or P4 (B/W)
|
||||
// PGM P2... or P5 (Grayscale)
|
||||
// PPM P3... or P6 (color)
|
||||
// PS %!PS-Adobe-2.0 or 1.0, no "EPSF"!
|
||||
// SGI \001\332... (decimal 474)
|
||||
// TGIF %TGIF...
|
||||
// TIFF II... or MM...
|
||||
// XBM ..._bits[]...
|
||||
// XPM /* XPM */ sometimes missing (f.ex. tgif-export)
|
||||
// ...static char *...
|
||||
// XWD \000\000\000\151 (0x00006900) decimal 105
|
||||
//
|
||||
// GZIP \037\213 http://www.ietf.org/rfc/rfc1952.txt
|
||||
// ZIP PK... http://www.halyava.ru/document/ind_arch.htm
|
||||
// Z \037\235 UNIX compress
|
||||
|
||||
// paranoia check
|
||||
if (fn.empty() || !fn.isReadableFile())
|
||||
return string();
|
||||
|
||||
ifstream ifs(fn.toFilesystemEncoding().c_str());
|
||||
if (!ifs)
|
||||
// Couldn't open file...
|
||||
return string();
|
||||
|
||||
// gnuzip
|
||||
static string const gzipStamp = "\037\213";
|
||||
|
||||
// PKZIP
|
||||
static string const zipStamp = "PK";
|
||||
|
||||
// ZIP containers (koffice, openoffice.org etc).
|
||||
static string const nonzipStamp = "\008\0\0\0mimetypeapplication/";
|
||||
|
||||
// compress
|
||||
static string const compressStamp = "\037\235";
|
||||
|
||||
// Maximum strings to read
|
||||
int const max_count = 50;
|
||||
int count = 0;
|
||||
|
||||
string str;
|
||||
string format;
|
||||
bool firstLine = true;
|
||||
while ((count++ < max_count) && format.empty()) {
|
||||
if (ifs.eof()) {
|
||||
LYXERR(Debug::GRAPHICS, "filetools(getFormatFromContents)\n"
|
||||
<< "\tFile type not recognised before EOF!");
|
||||
break;
|
||||
}
|
||||
|
||||
getline(ifs, str);
|
||||
string const stamp = str.substr(0, 2);
|
||||
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)) {
|
||||
format = "gzip";
|
||||
|
||||
} else if (stamp == zipStamp &&
|
||||
!contains(str, nonzipStamp)) {
|
||||
format = "zip";
|
||||
|
||||
} else if (stamp == compressStamp) {
|
||||
format = "compress";
|
||||
|
||||
// the graphics part
|
||||
} else if (stamp == "BM") {
|
||||
format = "bmp";
|
||||
|
||||
} else if (stamp == "\001\332") {
|
||||
format = "sgi";
|
||||
|
||||
// PBM family
|
||||
// Don't need to use str.at(0), str.at(1) because
|
||||
// we already know that str.size() >= 2
|
||||
} else if (str[0] == 'P') {
|
||||
switch (str[1]) {
|
||||
case '1':
|
||||
case '4':
|
||||
format = "pbm";
|
||||
break;
|
||||
case '2':
|
||||
case '5':
|
||||
format = "pgm";
|
||||
break;
|
||||
case '3':
|
||||
case '6':
|
||||
format = "ppm";
|
||||
}
|
||||
break;
|
||||
|
||||
} else if ((stamp == "II") || (stamp == "MM")) {
|
||||
format = "tiff";
|
||||
|
||||
} else if (prefixIs(str,"%TGIF")) {
|
||||
format = "tgif";
|
||||
|
||||
} else if (prefixIs(str,"#FIG")) {
|
||||
format = "fig";
|
||||
|
||||
} else if (prefixIs(str,"GIF")) {
|
||||
format = "gif";
|
||||
|
||||
} else if (str.size() > 3) {
|
||||
int const c = ((str[0] << 24) & (str[1] << 16) &
|
||||
(str[2] << 8) & str[3]);
|
||||
if (c == 105) {
|
||||
format = "xwd";
|
||||
}
|
||||
}
|
||||
|
||||
firstLine = false;
|
||||
}
|
||||
|
||||
if (!format.empty())
|
||||
break;
|
||||
else if (contains(str,"EPSF"))
|
||||
// dummy, if we have wrong file description like
|
||||
// %!PS-Adobe-2.0EPSF"
|
||||
format = "eps";
|
||||
|
||||
else if (contains(str, "Grace"))
|
||||
format = "agr";
|
||||
|
||||
else if (contains(str, "JFIF"))
|
||||
format = "jpg";
|
||||
|
||||
else if (contains(str, "%PDF"))
|
||||
format = "pdf";
|
||||
|
||||
else if (contains(str, "PNG"))
|
||||
format = "png";
|
||||
|
||||
else if (contains(str, "%!PS-Adobe")) {
|
||||
// eps or ps
|
||||
ifs >> str;
|
||||
if (contains(str,"EPSF"))
|
||||
format = "eps";
|
||||
else
|
||||
format = "ps";
|
||||
}
|
||||
|
||||
else if (contains(str, "_bits[]"))
|
||||
format = "xbm";
|
||||
|
||||
else if (contains(str, "XPM") || contains(str, "static char *"))
|
||||
format = "xpm";
|
||||
|
||||
else if (contains(str, "BITPIX"))
|
||||
format = "fits";
|
||||
}
|
||||
|
||||
if (!format.empty()) {
|
||||
LYXERR(Debug::GRAPHICS, "Recognised Fileformat: " << format);
|
||||
return format;
|
||||
}
|
||||
|
||||
LYXERR(Debug::GRAPHICS, "filetools(getFormatFromContents)\n"
|
||||
<< "\tCouldn't find a known format!");
|
||||
return string();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
string Formats::getFormatFromFile(FileName const & filename) const
|
||||
{
|
||||
if (filename.empty())
|
||||
@ -217,7 +404,7 @@ string Formats::getFormatFromFile(FileName const & filename) const
|
||||
}
|
||||
#endif
|
||||
|
||||
string const format = filename.guessFormatFromContents();
|
||||
string const format = guessFormatFromContents(filename);
|
||||
string const ext = getExtension(filename.absFileName());
|
||||
if (isZippedFileFormat(format) && !ext.empty()) {
|
||||
string const & fmt_name = formats.getFormatFromExtension(ext);
|
||||
|
||||
@ -769,185 +769,6 @@ void FileName::changeExtension(string const & extension)
|
||||
}
|
||||
|
||||
|
||||
string FileName::guessFormatFromContents() const
|
||||
{
|
||||
// the different filetypes and what they contain in one of the first lines
|
||||
// (dots are any characters). (Herbert 20020131)
|
||||
// AGR Grace...
|
||||
// BMP BM...
|
||||
// EPS %!PS-Adobe-3.0 EPSF...
|
||||
// FIG #FIG...
|
||||
// FITS ...BITPIX...
|
||||
// GIF GIF...
|
||||
// JPG JFIF
|
||||
// PDF %PDF-...
|
||||
// PNG .PNG...
|
||||
// PBM P1... or P4 (B/W)
|
||||
// PGM P2... or P5 (Grayscale)
|
||||
// PPM P3... or P6 (color)
|
||||
// PS %!PS-Adobe-2.0 or 1.0, no "EPSF"!
|
||||
// SGI \001\332... (decimal 474)
|
||||
// TGIF %TGIF...
|
||||
// TIFF II... or MM...
|
||||
// XBM ..._bits[]...
|
||||
// XPM /* XPM */ sometimes missing (f.ex. tgif-export)
|
||||
// ...static char *...
|
||||
// XWD \000\000\000\151 (0x00006900) decimal 105
|
||||
//
|
||||
// GZIP \037\213 http://www.ietf.org/rfc/rfc1952.txt
|
||||
// ZIP PK... http://www.halyava.ru/document/ind_arch.htm
|
||||
// Z \037\235 UNIX compress
|
||||
|
||||
// paranoia check
|
||||
if (empty() || !isReadableFile())
|
||||
return string();
|
||||
|
||||
ifstream ifs(toFilesystemEncoding().c_str());
|
||||
if (!ifs)
|
||||
// Couldn't open file...
|
||||
return string();
|
||||
|
||||
// gnuzip
|
||||
static string const gzipStamp = "\037\213";
|
||||
|
||||
// PKZIP
|
||||
static string const zipStamp = "PK";
|
||||
|
||||
// ZIP containers (koffice, openoffice.org etc).
|
||||
static string const nonzipStamp = "\008\0\0\0mimetypeapplication/";
|
||||
|
||||
// compress
|
||||
static string const compressStamp = "\037\235";
|
||||
|
||||
// Maximum strings to read
|
||||
int const max_count = 50;
|
||||
int count = 0;
|
||||
|
||||
string str;
|
||||
string format;
|
||||
bool firstLine = true;
|
||||
while ((count++ < max_count) && format.empty()) {
|
||||
if (ifs.eof()) {
|
||||
LYXERR(Debug::GRAPHICS, "filetools(getFormatFromContents)\n"
|
||||
<< "\tFile type not recognised before EOF!");
|
||||
break;
|
||||
}
|
||||
|
||||
getline(ifs, str);
|
||||
string const stamp = str.substr(0, 2);
|
||||
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)) {
|
||||
format = "gzip";
|
||||
|
||||
} else if (stamp == zipStamp &&
|
||||
!contains(str, nonzipStamp)) {
|
||||
format = "zip";
|
||||
|
||||
} else if (stamp == compressStamp) {
|
||||
format = "compress";
|
||||
|
||||
// the graphics part
|
||||
} else if (stamp == "BM") {
|
||||
format = "bmp";
|
||||
|
||||
} else if (stamp == "\001\332") {
|
||||
format = "sgi";
|
||||
|
||||
// PBM family
|
||||
// Don't need to use str.at(0), str.at(1) because
|
||||
// we already know that str.size() >= 2
|
||||
} else if (str[0] == 'P') {
|
||||
switch (str[1]) {
|
||||
case '1':
|
||||
case '4':
|
||||
format = "pbm";
|
||||
break;
|
||||
case '2':
|
||||
case '5':
|
||||
format = "pgm";
|
||||
break;
|
||||
case '3':
|
||||
case '6':
|
||||
format = "ppm";
|
||||
}
|
||||
break;
|
||||
|
||||
} else if ((stamp == "II") || (stamp == "MM")) {
|
||||
format = "tiff";
|
||||
|
||||
} else if (prefixIs(str,"%TGIF")) {
|
||||
format = "tgif";
|
||||
|
||||
} else if (prefixIs(str,"#FIG")) {
|
||||
format = "fig";
|
||||
|
||||
} else if (prefixIs(str,"GIF")) {
|
||||
format = "gif";
|
||||
|
||||
} else if (str.size() > 3) {
|
||||
int const c = ((str[0] << 24) & (str[1] << 16) &
|
||||
(str[2] << 8) & str[3]);
|
||||
if (c == 105) {
|
||||
format = "xwd";
|
||||
}
|
||||
}
|
||||
|
||||
firstLine = false;
|
||||
}
|
||||
|
||||
if (!format.empty())
|
||||
break;
|
||||
else if (contains(str,"EPSF"))
|
||||
// dummy, if we have wrong file description like
|
||||
// %!PS-Adobe-2.0EPSF"
|
||||
format = "eps";
|
||||
|
||||
else if (contains(str, "Grace"))
|
||||
format = "agr";
|
||||
|
||||
else if (contains(str, "JFIF"))
|
||||
format = "jpg";
|
||||
|
||||
else if (contains(str, "%PDF"))
|
||||
format = "pdf";
|
||||
|
||||
else if (contains(str, "PNG"))
|
||||
format = "png";
|
||||
|
||||
else if (contains(str, "%!PS-Adobe")) {
|
||||
// eps or ps
|
||||
ifs >> str;
|
||||
if (contains(str,"EPSF"))
|
||||
format = "eps";
|
||||
else
|
||||
format = "ps";
|
||||
}
|
||||
|
||||
else if (contains(str, "_bits[]"))
|
||||
format = "xbm";
|
||||
|
||||
else if (contains(str, "XPM") || contains(str, "static char *"))
|
||||
format = "xpm";
|
||||
|
||||
else if (contains(str, "BITPIX"))
|
||||
format = "fits";
|
||||
}
|
||||
|
||||
if (!format.empty()) {
|
||||
LYXERR(Debug::GRAPHICS, "Recognised Fileformat: " << format);
|
||||
return format;
|
||||
}
|
||||
|
||||
LYXERR(Debug::GRAPHICS, "filetools(getFormatFromContents)\n"
|
||||
<< "\tCouldn't find a known format!");
|
||||
return string();
|
||||
}
|
||||
|
||||
|
||||
docstring const FileName::relPath(string const & path) const
|
||||
{
|
||||
// FIXME UNICODE
|
||||
|
||||
@ -169,12 +169,6 @@ public:
|
||||
*/
|
||||
void changeExtension(std::string const & extension);
|
||||
|
||||
/** Guess the file format name (as in Format::name()) from contents.
|
||||
Normally you don't want to use this directly, but rather
|
||||
Formats::getFormatFromFile().
|
||||
*/
|
||||
std::string guessFormatFromContents() const;
|
||||
|
||||
static FileName fromFilesystemEncoding(std::string const & name);
|
||||
/// (securely) create a temporary file with the given mask.
|
||||
/// \p mask must be in filesystem encoding, if it contains a
|
||||
|
||||
Loading…
Reference in New Issue
Block a user