diff options
Diffstat (limited to 'apt-pkg/contrib/fileutl.cc')
| -rw-r--r-- | apt-pkg/contrib/fileutl.cc | 129 |
1 files changed, 112 insertions, 17 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index d5e7192e3..1cb3fab1e 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -24,6 +24,7 @@ #include <apt-pkg/strutl.h> #include <apt-pkg/error.h> #include <apt-pkg/sptr.h> +#include <apt-pkg/aptconfiguration.h> #include <apt-pkg/configuration.h> #include <cstdlib> @@ -725,6 +726,11 @@ bool FileFd::Open(string FileName,OpenMode Mode,CompressMode Compress, unsigned Close(); Flags = AutoClose; + if (Compress == Auto && (Mode & WriteOnly) == WriteOnly) + return _error->Error("Autodetection on %s only works in ReadOnly openmode!", FileName.c_str()); + if ((Mode & WriteOnly) != WriteOnly && (Mode & (Atomic | Create | Empty | Exclusive)) != 0) + return _error->Error("ReadOnly mode for %s doesn't accept additional flags!", FileName.c_str()); + int fileflags = 0; #define if_FLAGGED_SET(FLAG, MODE) if ((Mode & FLAG) == FLAG) fileflags |= MODE if_FLAGGED_SET(ReadWrite, O_RDWR); @@ -738,6 +744,70 @@ bool FileFd::Open(string FileName,OpenMode Mode,CompressMode Compress, unsigned if_FLAGGED_SET(Empty, O_TRUNC); #undef if_FLAGGED_SET + // FIXME: Denote inbuilt compressors somehow - as we don't need to have the binaries for them + std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors(); + std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin(); + if (Compress == Auto) + { + Compress = None; + for (; compressor != compressors.end(); ++compressor) + { + std::string file = std::string(FileName).append(compressor->Extension); + if (FileExists(file) == false) + continue; + FileName = file; + if (compressor->Binary == ".") + Compress = None; + else + Compress = Extension; + break; + } + } + else if (Compress == Extension) + { + Compress = None; + std::string ext = flExtension(FileName); + if (ext != FileName) + { + ext = "." + ext; + for (; compressor != compressors.end(); ++compressor) + if (ext == compressor->Extension) + break; + } + } + else if (Compress != None) + { + std::string name; + switch (Compress) + { + case Gzip: name = "gzip"; break; + case Bzip2: name = "bzip2"; break; + case Lzma: name = "lzma"; break; + case Xz: name = "xz"; break; + default: return _error->Error("Can't find a match for specified compressor mode for file %s", FileName.c_str()); + } + for (; compressor != compressors.end(); ++compressor) + if (compressor->Name == name) + break; + if (compressor == compressors.end() && name != "gzip") + return _error->Error("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str()); + } + + // if we have them, use inbuilt compressors instead of forking + if (compressor != compressors.end()) + { + if (compressor->Name == "gzip") + { + Compress = Gzip; + compressor = compressors.end(); + } + else if (compressor->Name == "." || Compress == None) + { + Compress = None; + compressor = compressors.end(); + } + } + if ((Mode & Atomic) == Atomic) { Flags |= Replace; @@ -757,18 +827,27 @@ bool FileFd::Open(string FileName,OpenMode Mode,CompressMode Compress, unsigned unlink(FileName.c_str()); } - if (TemporaryFileName.empty() == false) - iFd = open(TemporaryFileName.c_str(), fileflags, Perms); - else - iFd = open(FileName.c_str(), fileflags, Perms); + if (compressor != compressors.end()) + { + if ((Mode & ReadWrite) == ReadWrite) + _error->Error("External compressors like %s do not support readwrite mode for file %s", compressor->Name.c_str(), FileName.c_str()); - if (iFd != -1 && Compress == Gzip) + _error->Error("Forking external compressor %s is not implemented for %s", compressor->Name.c_str(), FileName.c_str()); + } + else { - gz = gzdopen (iFd, "r"); - if (gz == NULL) + if (TemporaryFileName.empty() == false) + iFd = open(TemporaryFileName.c_str(), fileflags, Perms); + else + iFd = open(FileName.c_str(), fileflags, Perms); + + if (iFd != -1) { - close (iFd); - iFd = -1; + if (OpenInternDescriptor(Mode, Compress) == false) + { + close (iFd); + iFd = -1; + } } } @@ -788,18 +867,34 @@ bool FileFd::OpenDescriptor(int Fd, OpenMode Mode, CompressMode Compress, bool A Close(); Flags = (AutoClose) ? FileFd::AutoClose : 0; iFd = Fd; - if (Mode == ReadOnlyGzip) { - gz = gzdopen (iFd, "r"); - if (gz == NULL) { - if (AutoClose) - close (iFd); - return _error->Errno("gzdopen",_("Could not open file descriptor %d"), - Fd); - } + if (OpenInternDescriptor(Mode, Compress) == false) + { + if (AutoClose) + close (iFd); + return _error->Errno("gzdopen",_("Could not open file descriptor %d"), Fd); } this->FileName = ""; return true; } +bool FileFd::OpenInternDescriptor(OpenMode Mode, CompressMode Compress) +{ + if (Compress == None) + return true; + else if (Compress == Gzip) + { + if ((Mode & ReadWrite) == ReadWrite) + gz = gzdopen(iFd, "r+"); + else if ((Mode & WriteOnly) == WriteOnly) + gz = gzdopen(iFd, "w"); + else + gz = gzdopen (iFd, "r"); + if (gz == NULL) + return false; + } + else + return false; + return true; +} /*}}}*/ // FileFd::~File - Closes the file /*{{{*/ // --------------------------------------------------------------------- |