X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Finclude%2Funzip.h;fp=src%2Finclude%2Funzip.h;h=16654ca6cb340d8e5557369d119ee49908ee51af;hb=fa566a2c8ec532eb5325b4d5a663fb2a7d72adc6;hp=0000000000000000000000000000000000000000;hpb=1d5f61c81bd6a213debf733970575154da696f23;p=virtualjaguar

diff --git a/src/include/unzip.h b/src/include/unzip.h
new file mode 100644
index 0000000..16654ca
--- /dev/null
+++ b/src/include/unzip.h
@@ -0,0 +1,135 @@
+#ifndef __UNZIP_H__
+#define __UNZIP_H__
+
+#include "types.h"
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/***************************************************************************
+ * Support for retrieving files from zipfiles
+ ***************************************************************************/
+
+struct zipent
+{
+	UINT32	cent_file_header_sig;
+	UINT8	version_made_by;
+	UINT8	host_os;
+	UINT8	version_needed_to_extract;
+	UINT8	os_needed_to_extract;
+	UINT16	general_purpose_bit_flag;
+	UINT16	compression_method;
+	UINT16	last_mod_file_time;
+	UINT16	last_mod_file_date;
+	UINT32	crc32;
+	UINT32	compressed_size;
+	UINT32	uncompressed_size;
+	UINT16	filename_length;
+	UINT16	extra_field_length;
+	UINT16	file_comment_length;
+	UINT16	disk_number_start;
+	UINT16	internal_file_attrib;
+	UINT32	external_file_attrib;
+	UINT32	offset_lcl_hdr_frm_frst_disk;
+	char *  name; /* 0 terminated */
+};
+
+typedef struct _ZIP
+{
+	char * zip;					/* zip name */
+	FILE * fp;					/* zip handler */
+	int pathtype, pathindex;	/* additional path info */
+	long length;				/* length of zip file */
+	char * ecd;					/* end_of_cent_dir data */
+	unsigned ecd_length;		/* end_of_cent_dir length */
+	char * cd;					/* cent_dir data */
+	unsigned cd_pos;			/* position in cent_dir */
+	struct zipent ent;			/* buffer for readzip */
+	/* end_of_cent_dir */
+	UINT32	end_of_cent_dir_sig;
+	UINT16	number_of_this_disk;
+	UINT16	number_of_disk_start_cent_dir;
+	UINT16	total_entries_cent_dir_this_disk;
+	UINT16	total_entries_cent_dir;
+	UINT32	size_of_cent_dir;
+	UINT32	offset_to_start_of_cent_dir;
+	UINT16	zipfile_comment_length;
+	char *	zipfile_comment;	/* pointer in ecd */
+} ZIP;
+
+/* Opens a zip stream for reading
+   return:
+     !=0 success, zip stream
+     ==0 error
+*/
+ZIP * openzip(int pathtype, int pathindex, const char * path);
+
+/* Closes a zip stream */
+void closezip(ZIP * zip);
+
+/* Reads the current entry from a zip stream
+   in:
+     zip opened zip
+   return:
+     !=0 success
+     ==0 error
+*/
+struct zipent * readzip(ZIP * zip);
+
+/* Suspend access to a zip file (release file handler)
+   in:
+      zip opened zip
+   note:
+     A suspended zip is automatically reopened at first call of
+     readuncompressd() or readcompressed() functions
+*/
+void suspendzip(ZIP * zip);
+
+/* Resets a zip stream to the first entry
+   in:
+     zip opened zip
+   note:
+     ZIP file must be opened and not suspended
+*/
+void rewindzip(ZIP * zip);
+
+/* Read compressed data from a zip entry
+   in:
+     zip opened zip
+     ent entry to read
+   out:
+     data buffer for data, ent.compressed_size UINT8s allocated by the caller
+   return:
+     ==0 success
+     <0 error
+*/
+int readcompresszip(ZIP * zip, struct zipent * ent, char * data);
+
+/* Read decompressed data from a zip entry
+   in:
+     zip zip stream open
+     ent entry to read
+   out:
+     data buffer for data, ent.uncompressed_size UINT8s allocated by the caller
+   return:
+     ==0 success
+     <0 error
+*/
+int readuncompresszip(ZIP * zip, struct zipent * ent, char * data);
+
+/* public functions */
+int /* error */ load_zipped_file(int pathtype, int pathindex, const char * zipfile, const char * filename,
+	unsigned char ** buf, uint32 * length);
+
+void unzip_cache_clear(void);
+
+/* public globals */
+extern int	gUnzipQuiet;	/* flag controls error messages */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	// __UNZIP_H__