1 files changed, 79 insertions, 0 deletions
diff --git a/woip/c/bzipreader.h b/woip/c/bzipreader.h
new file mode 100644
index 0000000..0477b68
--- /dev/null
+++ b/woip/c/bzipreader.h
@@ -0,0 +1,79 @@
+/*
+   Do stuff to bzip2 files. Originally based on bzip2recover, which
+   is part of the standard bzip2 distribution.
+   Author: Patrick Collison <patrick@collison.ie>
+   Original author: Julian Seward <jseward@bzip.org>
+*/
+
+/* Caveat: I've a feeling this won't work unmodified on big-endian architectures */
+
+#ifndef __BZIPREADER_H__
+#define __BZIPREADER_H__
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <bzlib.h>
+#include "debug.h"
+#include "safe.h"
+
+#define bytes(x) ((x) >> 3)
+
+#define BLOCK_HEADER_HI  0x00003141UL
+#define BLOCK_HEADER_LO  0x59265359UL
+
+#define BLOCK_ENDMARK_HI 0x00001772UL
+#define BLOCK_ENDMARK_LO 0x45385090UL
+
+#define BIT_EOF 2
+
+/* Increase if necessary.  However, a .bz2 file with > 50000 blocks
+   would have an uncompressed size of at least 40GB, so the chances
+   are low you'll need to up this. */
+#define BZ_MAX_HANDLED_BLOCKS 500000
+
+/* 900kb */
+/* FIXME */
+#define BZ_MAX_BLOCK (1100 * 1024)
+
+#define BZ_MAX_FILENAME 2000
+
+/* Header bytes */
+
+#define BZ_HDR_B 0x42                         /* 'B' */
+#define BZ_HDR_Z 0x5a                         /* 'Z' */
+#define BZ_HDR_h 0x68                         /* 'h' */
+#define BZ_HDR_0 0x30                         /* '0' */
+
+typedef struct {
+  FILE *handle;
+  int32_t  buffer;
+  int32_t  buffLive;
+  char   mode;
+} BitStream;
+
+typedef struct {
+  char  *buff;
+  int32_t  buffer;
+  int32_t  buffLive;
+  uint64_t pos;
+  int32_t crc; /* logically, this doesn't belong here, but RubyInline... */
+} BitBuffer;
+
+FILE *xfopen(const char *path, const char *mode);
+void xfclose(FILE *fp);
+
+BitBuffer *bbOfSize(uint64_t size);
+void bbClose(BitBuffer *bb);
+
+int computeBoundaries(FILE *inFile);
+int decompressBlock(char *src, uint32_t srcLen, char *dest, uint32_t *destLen);
+
+uint64_t readBlock(FILE *inFile, uint64_t bitOffset, BitBuffer *bbOut);
+uint64_t fixedOffset(uint64_t offset);
+
+#endif