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| author | Lasse Collin <lasse.collin@tukaani.org> | 2011-05-01 12:24:23 +0300 |
|---|---|---|
| committer | Lasse Collin <lasse.collin@tukaani.org> | 2011-05-01 12:24:23 +0300 |
| commit | 7a480e485938884ef3021b48c3b0b9f9699dc9b6 (patch) | |
| tree | 21d5755f218c14d35905a516a7ff07dd46872254 /src/xz/file_io.h | |
| parent | xz: Print the maximum number of worker threads in xz -vv. (diff) | |
| download | xz-7a480e485938884ef3021b48c3b0b9f9699dc9b6.tar.xz | |
xz: Fix input file position when --single-stream is used.
Now the following works as you would expect:
echo foo | xz > foo.xz
echo bar | xz >> foo.xz
( xz -dc --single-stream ; xz -dc --single-stream ) < foo.xz
Note that it doesn't work if the input is not seekable
or if there is Stream Padding between the concatenated
.xz Streams.
Diffstat (limited to 'src/xz/file_io.h')
| -rw-r--r-- | src/xz/file_io.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/xz/file_io.h b/src/xz/file_io.h index 967da868..ef639324 100644 --- a/src/xz/file_io.h +++ b/src/xz/file_io.h @@ -102,6 +102,19 @@ extern void io_close(file_pair *pair, bool success); extern size_t io_read(file_pair *pair, io_buf *buf, size_t size); +/// \brief Fix the position in src_fd +/// +/// This is used when --single-thream has been specified and decompression +/// is successful. If the input file descriptor supports seeking, this +/// function fixes the input position to point to the next byte after the +/// decompressed stream. +/// +/// \param pair File pair having the source file open for reading +/// \param rewind_size How many bytes of extra have been read i.e. +/// how much to seek backwards. +extern void io_fix_src_pos(file_pair *pair, size_t rewind_size); + + /// \brief Read from source file from given offset to a buffer /// /// This is remotely similar to standard pread(). This uses lseek() though, |