/*
- * Copyright (c) 2007-2008, Novell Inc.
+ * Copyright (c) 2007-2011, Novell Inc.
*
* This program is licensed under the BSD license, read LICENSE.BSD
* for further information
#ifndef LIBSOLV_REPOPAGE_H
#define LIBSOLV_REPOPAGE_H
-#define BLOB_PAGEBITS 15
-#define BLOB_PAGESIZE (1 << BLOB_PAGEBITS)
+#define REPOPAGE_BLOBBITS 15
+#define REPOPAGE_BLOBSIZE (1 << REPOPAGE_BLOBBITS)
-typedef struct _Attrblobpage
+typedef struct s_Attrblobpage
{
- /* mapped_at == -1 --> not loaded, otherwise offset into
- store->blob_store. The size of the mapping is BLOB_PAGESIZE
- except for the last page. */
- unsigned int mapped_at;
- long file_offset;
- /* file_size == 0 means the page is not backed by some file storage.
+ /* page_size == 0 means the page is not backed by some file storage.
Otherwise it is L*2+(compressed ? 1 : 0), with L being the data
length. */
- long file_size;
+ unsigned int page_offset;
+ unsigned int page_size;
} Attrblobpage;
-typedef struct _Repopagestore {
- int pagefd; /* file descriptor we're paging from */
+typedef struct s_Repopagestore {
+ int pagefd; /* file descriptor we're paging from */
+ long file_offset; /* pages in file start here */
unsigned char *blob_store;
- Attrblobpage *pages;
unsigned int num_pages;
- /* mapped[i] is zero if nothing is mapped at logical page I,
- otherwise it contains the pagenumber plus one (of the mapped page). */
+ /* mapped_at[page] == -1 --> not loaded, otherwise offset into
+ store->blob_store. The size of the mapping is REPOPAGE_BLOBSIZE
+ except for the last page. */
+ unsigned int *mapped_at;
+
+ Attrblobpage *file_pages;
+
+ /* mapped[i] is -1 if nothing is mapped at logical page I,
+ otherwise it contains the page number (of the mapped page). */
unsigned int *mapped;
- unsigned int nmapped, ncanmap;
+ unsigned int nmapped;
unsigned int rr_counter;
} Repopagestore;
+#ifdef __cplusplus
+extern "C" {
+#endif
+
void repopagestore_init(Repopagestore *store);
void repopagestore_free(Repopagestore *store);
/* compress a page, return compressed len */
unsigned int repopagestore_compress_page(unsigned char *page, unsigned int len, unsigned char *cpage, unsigned int max);
+/* uncompress a page, return uncompressed len */
+unsigned int repopagestore_decompress_page(const unsigned char *cpage, unsigned int len, unsigned char *page, unsigned int max);
/* setup page data for repodata_load_page_range */
int repopagestore_read_or_setup_pages(Repopagestore *store, FILE *fp, unsigned int pagesz, unsigned int blobsz);
void repopagestore_disable_paging(Repopagestore *store);
+#ifdef __cplusplus
+}
+#endif
+
#endif /* LIBSOLV_REPOPAGE_H */