X-Git-Url: https://git.draconx.ca/gitweb/liblbx.git/blobdiff_plain/84ff721b88b3c2bc9fa50f97e85cdba5e5d74e8d..HEAD:/src/lbx.h

diff --git a/src/lbx.h b/src/lbx.h
index a2ca456..410d829 100644
--- a/src/lbx.h
+++ b/src/lbx.h
@@ -3,18 +3,32 @@
 
 #include <stdio.h>
 
-/* Errors */
-enum {
-	LBX_ESUCCESS,
-	LBX_EMAGIC,
-	LBX_EEOF,
-	LBX_ERANGE,
-	LBX_EFORMAT,
+struct lbx_file_ops {
+	size_t (*read)(void *buf, size_t size, void *handle);
+	int    (*seek)(void *handle, long offset, int whence);
+	int    (*eof) (void *handle);
 };
-extern int lbx_errno;
+
+struct lbx_pipe_state {
+	FILE *f;
+	long offset;
+};
+
+/* Default I/O operations for ordinary files. */
+extern const struct lbx_file_ops lbx_default_fops;
+
+/* I/O operations for un-seekable files (e.g. pipes). */
+extern const struct lbx_file_ops lbx_pipe_fops;
+
+/* I/O operations for LBX archive members. */
+extern const struct lbx_file_ops lbx_arch_fops;
 
 /* Opaque */
-typedef struct lbx_state LBX;
+typedef struct lbx_file_state LBXfile;
+
+struct lbx {
+	unsigned nfiles;
+};
 
 struct lbx_statbuf {
 	const char *name;
@@ -22,18 +36,18 @@ struct lbx_statbuf {
 };
 
 /* Archive operations */
-LBX   *lbx_fopen(FILE *, const char *);
-LBX   *lbx_mopen(void *, size_t, const char *);
-LBX   *lbx_open(const char *);
-void   lbx_close(LBX *);
-size_t lbx_numfiles(LBX *);
+struct lbx *lbx_open(void *handle, const struct lbx_file_ops *fops,
+                     int (*destructor)(void *handle), const char *name);
+struct lbx *lbx_fopen(const char *);
+int lbx_close(struct lbx *);
 
 /* File operations */
-int    lbx_stat(LBX *, size_t, struct lbx_statbuf *);
-size_t lbx_extract(LBX *, size_t, FILE *);
-void  *lbx_mmap(LBX *, size_t, size_t *);
-
-/* Misc operations */
-const char *lbx_strerror(void);
+int      lbx_file_stat(struct lbx *lbx, unsigned fileno, struct lbx_statbuf *out);
+LBXfile *lbx_file_open(struct lbx *lbx, unsigned fileno);
+size_t   lbx_file_read(LBXfile *f, void *buf, size_t n);
+int      lbx_file_seek(LBXfile *f, long offset, int whence);
+long     lbx_file_tell(LBXfile *f);
+int      lbx_file_eof(LBXfile *f);
+void     lbx_file_close(LBXfile *f);
 
 #endif