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-rw-r--r--lib/fstream/uncompress/bzip2.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/lib/fstream/uncompress/bzip2.c b/lib/fstream/uncompress/bzip2.c
index b5fae5c..429950a 100644
--- a/lib/fstream/uncompress/bzip2.c
+++ b/lib/fstream/uncompress/bzip2.c
@@ -11,6 +11,7 @@
typedef struct {
istream_comp_t base;
+ bool initialized;
bz_stream strm;
} istream_bzip2_t;
@@ -21,6 +22,17 @@ static int precache(istream_t *base)
int ret;
for (;;) {
+ if (!bzip2->initialized) {
+ if (BZ2_bzDecompressInit(&bzip2->strm, 0, 0) != BZ_OK) {
+ fprintf(stderr, "%s: error initializing "
+ "bzip2 decompressor.\n",
+ wrapped->get_filename(wrapped));
+ return -1;
+ }
+
+ bzip2->initialized = true;
+ }
+
ret = istream_precache(wrapped);
if (ret != 0)
return ret;
@@ -48,8 +60,16 @@ static int precache(istream_t *base)
bzip2->strm.avail_in;
if (ret == BZ_STREAM_END) {
- base->eof = true;
- break;
+ if (istream_precache(wrapped))
+ return -1;
+
+ BZ2_bzDecompressEnd(&bzip2->strm);
+ bzip2->initialized = false;
+
+ if (wrapped->buffer_used == 0) {
+ base->eof = true;
+ break;
+ }
}
}
@@ -60,7 +80,8 @@ static void cleanup(istream_comp_t *base)
{
istream_bzip2_t *bzip2 = (istream_bzip2_t *)base;
- BZ2_bzDecompressEnd(&bzip2->strm);
+ if (bzip2->initialized)
+ BZ2_bzDecompressEnd(&bzip2->strm);
}
istream_comp_t *istream_bzip2_create(const char *filename)
@@ -74,13 +95,6 @@ istream_comp_t *istream_bzip2_create(const char *filename)
return NULL;
}
- if (BZ2_bzDecompressInit(&bzip2->strm, 0, 0) != BZ_OK) {
- fprintf(stderr, "%s: error initializing bzip2 decompressor.\n",
- filename);
- free(bzip2);
- return NULL;
- }
-
((istream_t *)base)->precache = precache;
base->cleanup = cleanup;
return base;