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Diffstat (limited to 'ext/zip/lib/zip_source_window.c')
-rw-r--r--ext/zip/lib/zip_source_window.c253
1 files changed, 0 insertions, 253 deletions
diff --git a/ext/zip/lib/zip_source_window.c b/ext/zip/lib/zip_source_window.c
deleted file mode 100644
index 53da556b50..0000000000
--- a/ext/zip/lib/zip_source_window.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- zip_source_window.c -- return part of lower source
- Copyright (C) 2012-2014 Dieter Baron and Thomas Klausner
-
- This file is part of libzip, a library to manipulate ZIP archives.
- The authors can be contacted at <libzip@nih.at>
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- 3. The names of the authors may not be used to endorse or promote
- products derived from this software without specific prior
- written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
- IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "zipint.h"
-
-struct window {
- zip_uint64_t start;
- zip_uint64_t end;
- zip_uint64_t offset;
- zip_stat_t stat;
- zip_error_t error;
- zip_int64_t supports;
- bool needs_seek;
-};
-
-static zip_int64_t window_read(zip_source_t *, void *, void *, zip_uint64_t, zip_source_cmd_t);
-
-
-zip_source_t *
-zip_source_window(zip_t *za, zip_source_t *src, zip_uint64_t start, zip_uint64_t len)
-{
- return _zip_source_window_new(src, start, len, NULL, &za->error);
-}
-
-
-zip_source_t *
-_zip_source_window_new(zip_source_t *src, zip_uint64_t start, zip_uint64_t length, zip_stat_t *st, zip_error_t *error)
-{
- struct window *ctx;
-
- if (src == NULL || start + length < start) {
- zip_error_set(error, ZIP_ER_INVAL, 0);
- return NULL;
- }
-
- if ((ctx=(struct window *)malloc(sizeof(*ctx))) == NULL) {
- zip_error_set(error, ZIP_ER_MEMORY, 0);
- return NULL;
- }
-
- ctx->start = start;
- ctx->end = start + length;
- zip_stat_init(&ctx->stat);
- zip_error_init(&ctx->error);
- ctx->supports = (zip_source_supports(src) & ZIP_SOURCE_SUPPORTS_SEEKABLE) | (zip_source_make_command_bitmap(ZIP_SOURCE_SUPPORTS, ZIP_SOURCE_TELL, -1));
- ctx->needs_seek = (ctx->supports & ZIP_SOURCE_MAKE_COMMAND_BITMASK(ZIP_SOURCE_SEEK)) ? true : false;
-
- if (st) {
- if (_zip_stat_merge(&ctx->stat, st, error) < 0) {
- free(ctx);
- return NULL;
- }
- }
-
- return zip_source_layered_create(src, window_read, ctx, error);
-}
-
-
-int
-_zip_source_set_source_archive(zip_source_t *src, zip_t *za)
-{
- src->source_archive = za;
- return _zip_register_source(za, src);
-}
-
-
-/* called by zip_discard to avoid operating on file from closed archive */
-void
-_zip_source_invalidate(zip_source_t *src)
-{
- src->source_closed = 1;
-
- if (zip_error_code_zip(&src->error) == ZIP_ER_OK) {
- zip_error_set(&src->error, ZIP_ER_ZIPCLOSED, 0);
- }
-}
-
-
-static zip_int64_t
-window_read(zip_source_t *src, void *_ctx, void *data, zip_uint64_t len, zip_source_cmd_t cmd)
-{
- struct window *ctx;
- zip_int64_t ret;
- zip_uint64_t n, i;
- char b[8192];
-
- ctx = (struct window *)_ctx;
-
- switch (cmd) {
- case ZIP_SOURCE_CLOSE:
- return 0;
-
- case ZIP_SOURCE_ERROR:
- return zip_error_to_data(&ctx->error, data, len);
-
- case ZIP_SOURCE_FREE:
- free(ctx);
- return 0;
-
- case ZIP_SOURCE_OPEN:
- if (!ctx->needs_seek) {
- for (n=0; n<ctx->start; n+=(zip_uint64_t)ret) {
- i = (ctx->start-n > sizeof(b) ? sizeof(b) : ctx->start-n);
- if ((ret=zip_source_read(src, b, i)) < 0) {
- _zip_error_set_from_source(&ctx->error, src);
- return -1;
- }
- if (ret==0) {
- zip_error_set(&ctx->error, ZIP_ER_EOF, 0);
- return -1;
- }
- }
-
- }
- ctx->offset = ctx->start;
- return 0;
-
- case ZIP_SOURCE_READ:
- if (len > ctx->end - ctx->offset)
- len = ctx->end - ctx->offset;
-
- if (len == 0)
- return 0;
-
- if (ctx->needs_seek) {
- if (zip_source_seek(src, (zip_int64_t)ctx->offset, SEEK_SET) < 0) {
- _zip_error_set_from_source(&ctx->error, src);
- return -1;
- }
- }
-
- if ((ret=zip_source_read(src, data, len)) < 0) {
- zip_error_set(&ctx->error, ZIP_ER_EOF, 0);
- return -1;
- }
-
- ctx->offset += (zip_uint64_t)ret;
-
- if (ret == 0) {
- if (ctx->offset < ctx->end) {
- zip_error_set(&ctx->error, ZIP_ER_EOF, 0);
- return -1;
- }
- }
- return ret;
-
- case ZIP_SOURCE_SEEK:
- {
- zip_int64_t new_offset = zip_source_seek_compute_offset(ctx->offset - ctx->start, ctx->end - ctx->start, data, len, &ctx->error);
-
- if (new_offset < 0) {
- return -1;
- }
-
- ctx->offset = (zip_uint64_t)new_offset + ctx->start;
- return 0;
- }
-
- case ZIP_SOURCE_STAT:
- {
- zip_stat_t *st;
-
- st = (zip_stat_t *)data;
-
- if (_zip_stat_merge(st, &ctx->stat, &ctx->error) < 0) {
- return -1;
- }
- return 0;
- }
-
- case ZIP_SOURCE_SUPPORTS:
- return ctx->supports;
-
- case ZIP_SOURCE_TELL:
- return (zip_int64_t)(ctx->offset - ctx->start);
-
- default:
- zip_error_set(&ctx->error, ZIP_ER_OPNOTSUPP, 0);
- return -1;
- }
-}
-
-
-void
-_zip_deregister_source(zip_t *za, zip_source_t *src)
-{
- unsigned int i;
-
- for (i=0; i<za->nopen_source; i++) {
- if (za->open_source[i] == src) {
- za->open_source[i] = za->open_source[za->nopen_source-1];
- za->nopen_source--;
- break;
- }
- }
-}
-
-
-int
-_zip_register_source(zip_t *za, zip_source_t *src)
-{
- zip_source_t **open_source;
-
- if (za->nopen_source+1 >= za->nopen_source_alloc) {
- unsigned int n;
- n = za->nopen_source_alloc + 10;
- open_source = (zip_source_t **)realloc(za->open_source, n*sizeof(zip_source_t *));
- if (open_source == NULL) {
- zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
- return -1;
- }
- za->nopen_source_alloc = n;
- za->open_source = open_source;
- }
-
- za->open_source[za->nopen_source++] = src;
-
- return 0;
-}
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