X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=unzip%2Funzip.h;fp=unzip%2Funzip.h;h=d44f9632ed173afb8e49817bbcb342fa4f824f48;hb=cc68a136aa179a5f32fe40208371eb9c2b0aadae;hp=0000000000000000000000000000000000000000;hpb=2cadbd5e56966f8b7a4e9790aba2f719cfcc38e8;p=picodrive.git

diff --git a/unzip/unzip.h b/unzip/unzip.h
new file mode 100644
index 0000000..d44f963
--- /dev/null
+++ b/unzip/unzip.h
@@ -0,0 +1,144 @@
+#ifndef __UNZIP_H
+#define __UNZIP_H
+
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// notaz: something's missing this
+#ifndef UINT16
+#define UINT32 unsigned int
+#define UINT16 unsigned short
+#define UINT8  unsigned char
+#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 */
+	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(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 (const char *zipfile, const char *filename,
+	unsigned char **buf, unsigned int *length);
+int /* error */ checksum_zipped_file (const char *zipfile, const char *filename, unsigned int *length, unsigned int *sum);
+
+void unzip_cache_clear(void);
+
+/* public globals */
+extern int	gUnzipQuiet;	/* flag controls error messages */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif