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authorDavid Kalnischkies <kalnischkies@gmail.com>2013-06-09 14:32:48 +0200
committerDavid Kalnischkies <david@kalnischkies.de>2014-03-13 13:58:46 +0100
commit69d6988a1914881952c013cb63b4d835c3db0db7 (patch)
treec31872270c11e44e74a6760cdec156dc295d5eec /apt-pkg/contrib
parent84baaae93badc2da7c1f4f356456762895cef278 (diff)
refactor setup of file opening via zlib/bz2 lib
Git-Dch: Ignore
Diffstat (limited to 'apt-pkg/contrib')
-rw-r--r--apt-pkg/contrib/fileutl.cc73
1 files changed, 36 insertions, 37 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 2188f616a..057cb6a94 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1089,19 +1089,32 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
if (compressor.Name == "." || compressor.Binary.empty() == true)
return true;
+#if defined HAVE_ZLIB || defined HAVE_BZ2
+ // the API to open files is similar, so setup to avoid code duplicates later
+ // and while at it ensure that we close before opening (if its a reopen)
+ void* (*compress_open)(int, const char *) = NULL;
+#define APT_COMPRESS_INIT(NAME,OPEN,CLOSE,STRUCT) \
+ if (compressor.Name == NAME) \
+ { \
+ compress_open = (void*(*)(int, const char *)) OPEN; \
+ if (d != NULL && STRUCT != NULL) { CLOSE(STRUCT); STRUCT = NULL; } \
+ }
+#ifdef HAVE_ZLIB
+ APT_COMPRESS_INIT("gzip", gzdopen, gzclose, d->gz)
+#endif
+#ifdef HAVE_BZ2
+ APT_COMPRESS_INIT("bzip2", BZ2_bzdopen, BZ2_bzclose, d->bz2)
+#endif
+#undef APT_COMPRESS_INIT
+#endif
+
if (d == NULL)
{
d = new FileFdPrivate();
d->openmode = Mode;
d->compressor = compressor;
- if (AutoClose == false && (
-#ifdef HAVE_ZLIB
- compressor.Name == "gzip" ||
-#endif
-#ifdef HAVE_BZ2
- compressor.Name == "bzip2" ||
-#endif
- false))
+#if defined HAVE_ZLIB || defined HAVE_BZ2
+ if (AutoClose == false && compress_open != NULL)
{
// Need to duplicate fd here or gz/bz2 close for cleanup will close the fd as well
int const internFd = dup(iFd);
@@ -1109,44 +1122,30 @@ bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::C
return FileFdErrno("OpenInternDescriptor", _("Could not open file descriptor %d"), iFd);
iFd = internFd;
}
+#endif
}
-#ifdef HAVE_ZLIB
- if (compressor.Name == "gzip")
+#if defined HAVE_ZLIB || defined HAVE_BZ2
+ if (compress_open != NULL)
{
- if (d->gz != NULL)
- {
- gzclose(d->gz);
- d->gz = NULL;
- }
+ void* compress_struct = NULL;
if ((Mode & ReadWrite) == ReadWrite)
- d->gz = gzdopen(iFd, "r+");
+ compress_struct = compress_open(iFd, "r+");
else if ((Mode & WriteOnly) == WriteOnly)
- d->gz = gzdopen(iFd, "w");
+ compress_struct = compress_open(iFd, "w");
else
- d->gz = gzdopen(iFd, "r");
- if (d->gz == NULL)
+ compress_struct = compress_open(iFd, "r");
+ if (compress_struct == NULL)
return false;
- Flags |= Compressed;
- return true;
- }
+
+#ifdef HAVE_ZLIB
+ if (compressor.Name == "gzip")
+ d->gz = (gzFile) compress_struct;
#endif
#ifdef HAVE_BZ2
- if (compressor.Name == "bzip2")
- {
- if (d->bz2 != NULL)
- {
- BZ2_bzclose(d->bz2);
- d->bz2 = NULL;
- }
- if ((Mode & ReadWrite) == ReadWrite)
- d->bz2 = BZ2_bzdopen(iFd, "r+");
- else if ((Mode & WriteOnly) == WriteOnly)
- d->bz2 = BZ2_bzdopen(iFd, "w");
- else
- d->bz2 = BZ2_bzdopen(iFd, "r");
- if (d->bz2 == NULL)
- return false;
+ if (compressor.Name == "bzip2")
+ d->bz2 = (BZFILE*) compress_struct;
+#endif
Flags |= Compressed;
return true;
}