diff options
Diffstat (limited to 'plugins/updater/zbin/minizip/ioapi_mem.c')
| -rw-r--r-- | plugins/updater/zbin/minizip/ioapi_mem.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/plugins/updater/zbin/minizip/ioapi_mem.c b/plugins/updater/zbin/minizip/ioapi_mem.c deleted file mode 100644 index 126b89fa33..0000000000 --- a/plugins/updater/zbin/minizip/ioapi_mem.c +++ /dev/null @@ -1,270 +0,0 @@ -/* ioapi_mem.c -- IO base function header for compress/uncompress .zip
- files using zlib + zip or unzip API
-
- This version of ioapi is designed to access memory rather than files.
- We do use a region of memory to put data in to and take it out of. We do
- not have auto-extending buffers and do not inform anyone else that the
- data has been written. It is really intended for accessing a zip archive
- embedded in an application such that I can write an installer with no
- external files. Creation of archives has not been attempted, although
- parts of the framework are present.
-
- Based on Unzip ioapi.c version 0.22, May 19th, 2003
-
- Copyright (C) 1998-2003 Gilles Vollant
- (C) 2003 Justin Fletcher
-
- This file is under the same license as the Unzip tool it is distributed
- with.
-*/
-
-
-#include <stdio.h>
-#include <string.h>
-
-#include "zlib.h"
-#include "ioapi.h"
-
-
-
-voidpf ZCALLBACK fopen_mem_func OF((
- voidpf opaque,
- const char* filename,
- int mode));
-
-uLong ZCALLBACK fread_mem_func OF((
- voidpf opaque,
- voidpf stream,
- void* buf,
- uLong size));
-
-uLong ZCALLBACK fwrite_mem_func OF((
- voidpf opaque,
- voidpf stream,
- const void* buf,
- uLong size));
-
-uLong ZCALLBACK ftell_mem_func OF((
- voidpf opaque,
- voidpf stream));
-
-long ZCALLBACK fseek_mem_func OF((
- voidpf opaque,
- voidpf stream,
- uLong offset,
- int origin));
-
-int ZCALLBACK fclose_mem_func OF((
- voidpf opaque,
- voidpf stream));
-
-int ZCALLBACK ferror_mem_func OF((
- voidpf opaque,
- voidpf stream));
-
-
-typedef struct ourmemory_s {
- char *base; /* Base of the region of memory we're using */
- size_t size; /* Size of the region of memory we're using */
- size_t limit; /* Furthest we've written */
- size_t cur_offset; /* Current offset in the area */
-} ourmemory_t;
-
-voidpf ZCALLBACK fopen_mem_func (opaque, filename, mode)
- voidpf opaque;
- const char* filename;
- int mode;
-{
- ourmemory_t *mem = malloc(sizeof(*mem));
- if (mem == NULL)
- return NULL; /* Can't allocate space, so failed */
-
- /* Filenames are specified in the form :
- * <hex base of zip file>+<hex size of zip file>
- * This may not work where memory addresses are longer than the
- * size of an int and therefore may need addressing for 64bit
- * architectures
- */
-#ifdef _WIN64
- if (sscanf(filename,"%p+%I64x", &mem->base, &mem->size) != 2)
- return NULL;
-#else
- if (sscanf(filename,"%p+%x", &mem->base, &mem->size) != 2)
- return NULL;
-#endif
- if (mode & ZLIB_FILEFUNC_MODE_CREATE)
- mem->limit = 0; /* When writing we start with 0 bytes written */
- else
- mem->limit = mem->size;
-
- mem->cur_offset = 0;
-
- return mem;
-}
-
-
-uLong ZCALLBACK fread_mem_func (opaque, stream, buf, size)
- voidpf opaque;
- voidpf stream;
- void* buf;
- uLong size;
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
-
- if (size > mem->size - mem->cur_offset)
- size = (uLong)(mem->size - mem->cur_offset);
-
- memcpy(buf, mem->base + mem->cur_offset, size);
- mem->cur_offset+=size;
-
- return size;
-}
-
-
-uLong ZCALLBACK fwrite_mem_func (opaque, stream, buf, size)
- voidpf opaque;
- voidpf stream;
- const void* buf;
- uLong size;
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
-
- if (size > mem->size - mem->cur_offset)
- size = (uLong)(mem->size - mem->cur_offset);
-
- memcpy(mem->base + mem->cur_offset, buf, size);
- mem->cur_offset+=size;
- if (mem->cur_offset > mem->limit)
- mem->limit = mem->cur_offset;
-
- return size;
-}
-
-uLong ZCALLBACK ftell_mem_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
-
- return (uLong)mem->cur_offset;
-}
-
-ZPOS64_T ZCALLBACK ftell64_mem_func (voidpf opaque, voidpf stream)
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
-
- return mem->cur_offset;
-}
-
-long ZCALLBACK fseek_mem_func (opaque, stream, offset, origin)
- voidpf opaque;
- voidpf stream;
- uLong offset;
- int origin;
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
- size_t new_pos;
- switch (origin)
- {
- case ZLIB_FILEFUNC_SEEK_CUR :
- new_pos = mem->cur_offset + (long)offset;
- break;
- case ZLIB_FILEFUNC_SEEK_END :
- new_pos = mem->limit + (long)offset;
- break;
- case ZLIB_FILEFUNC_SEEK_SET :
- new_pos = offset;
- break;
- default: return -1;
- }
-
- if (new_pos > mem->size)
- return 1; /* Failed to seek that far */
-
- if (new_pos > mem->limit)
- memset(mem->base + mem->limit, 0, (new_pos - mem->limit));
-
- mem->cur_offset = new_pos;
- return 0;
-}
-
-long ZCALLBACK fseek64_mem_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
- size_t new_pos;
- switch (origin)
- {
- case ZLIB_FILEFUNC_SEEK_CUR :
- new_pos = (size_t)(mem->cur_offset + (__int64)offset);
- break;
- case ZLIB_FILEFUNC_SEEK_END :
- new_pos = (size_t)(mem->limit + (__int64)offset);
- break;
- case ZLIB_FILEFUNC_SEEK_SET :
- new_pos = (size_t)offset;
- break;
- default: return -1;
- }
-
- if (new_pos > mem->size)
- return 1; /* Failed to seek that far */
-
- if (new_pos > mem->limit)
- memset(mem->base + mem->limit, 0, new_pos - mem->limit);
-
- mem->cur_offset = new_pos;
- return 0;
-}
-
-int ZCALLBACK fclose_mem_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
-
- /* Note that once we've written to the buffer we don't tell anyone
- about it here. Probably the opaque handle could be used to inform
- some other component of how much data was written.
-
- This, and other aspects of writing through this interface, has
- not been tested.
- */
-
- free (mem);
- return 0;
-}
-
-int ZCALLBACK ferror_mem_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- ourmemory_t *mem = (ourmemory_t *)stream;
- /* We never return errors */
- return 0;
-}
-
-void fill_memory_filefunc (pzlib_filefunc_def)
- zlib_filefunc_def* pzlib_filefunc_def;
-{
- pzlib_filefunc_def->zopen_file = fopen_mem_func;
- pzlib_filefunc_def->zread_file = fread_mem_func;
- pzlib_filefunc_def->zwrite_file = fwrite_mem_func;
- pzlib_filefunc_def->ztell_file = ftell_mem_func;
- pzlib_filefunc_def->zseek_file = fseek_mem_func;
- pzlib_filefunc_def->zclose_file = fclose_mem_func;
- pzlib_filefunc_def->zerror_file = ferror_mem_func;
- pzlib_filefunc_def->opaque = NULL;
-}
-
-void fill_memory_filefunc64 (pzlib_filefunc_def)
- zlib_filefunc64_def* pzlib_filefunc_def;
-{
- pzlib_filefunc_def->zopen64_file = fopen_mem_func;
- pzlib_filefunc_def->zread_file = fread_mem_func;
- pzlib_filefunc_def->zwrite_file = fwrite_mem_func;
- pzlib_filefunc_def->ztell64_file = ftell64_mem_func;
- pzlib_filefunc_def->zseek64_file = fseek64_mem_func;
- pzlib_filefunc_def->zclose_file = fclose_mem_func;
- pzlib_filefunc_def->zerror_file = ferror_mem_func;
- pzlib_filefunc_def->opaque = NULL;
-}
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