1 files changed, 69 insertions, 0 deletions
diff --git a/uncompression.h b/uncompression.h
new file mode 100644
index 0000000..ae0e2e4
--- /dev/null
+++ b/uncompression.h
@@ -0,0 +1,69 @@
+#ifndef REPREPRO_UNCOMPRESS_H
+#define REPREPRO_UNCOMPRESS_H
+
+/* "", ".gz", ... */
+extern const char * const uncompression_suffix[c_COUNT];
+extern /*@null@*/ char *extern_uncompressors[c_COUNT];
+/* so help messages know which option to cite: */
+extern const char * const uncompression_option[c_COUNT];
+extern const char * const uncompression_config[c_COUNT];
+
+/* there are two different modes: uncompress a file to memory,
+ * or uncompress (possibly multiple files) on the filesystem,
+ * controled by aptmethods */
+
+#ifdef HAVE_LIBLZMA
+# ifdef HAVE_LIBBZ2
+#define uncompression_builtin(c) ((c) == c_xz || (c) == c_lzma || (c) == c_bzip2 || (c) == c_gzip)
+# else
+#define uncompression_builtin(c) ((c) == c_xz || (c) == c_lzma || (c) == c_gzip)
+# endif
+#else
+# ifdef HAVE_LIBBZ2
+#define uncompression_builtin(c) ((c) == c_bzip2 || (c) == c_gzip)
+# else
+#define uncompression_builtin(c) ((c) == c_gzip)
+# endif
+#endif
+#define uncompression_supported(c) ((c) == c_none || \
+		uncompression_builtin(c) || \
+		extern_uncompressors[c] != NULL)
+
+enum compression compression_by_suffix(const char *, size_t *);
+
+/**** functions for aptmethod.c ****/
+
+/* we got an pid, check if it is a uncompressor we care for */
+retvalue uncompress_checkpid(pid_t, int);
+/* still waiting for a client to exit */
+bool uncompress_running(void);
+
+typedef retvalue finishaction(void *, const char *, bool /*failed*/);
+/* uncompress and call action when finished */
+retvalue uncompress_queue_file(const char *, const char *, enum compression, finishaction *, void *);
+
+/**** functions for update.c (uncompressing an earlier downloaded file) ****/
+
+retvalue uncompress_file(const char *, const char *, enum compression);
+
+/**** functions for indexfile.c (uncompressing to memory) and ar.c ****/
+// and perhaps also sourceextraction.c
+
+struct compressedfile;
+
+retvalue uncompress_open(/*@out@*/struct compressedfile **, const char *, enum compression);
+int uncompress_read(struct compressedfile *, void *buffer, int);
+retvalue uncompress_error(/*@const@*/struct compressedfile *);
+void uncompress_abort(/*@only@*/struct compressedfile *);
+retvalue uncompress_close(/*@only@*/struct compressedfile *);
+retvalue uncompress_fdclose(/*@only@*/struct compressedfile *, int *, const char **);
+
+retvalue uncompress_fdopen(/*@out@*/struct compressedfile **, int, off_t, enum compression, int *, const char **);
+
+/**** general initialisation ****/
+
+/* check for existence of external programs */
+void uncompressions_check(const char *gunzip, const char *bunzip2, const char *unlzma, const  char *unxz, const char *lunzip, const char *unzstd);
+
+#endif
+