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-rw-r--r--src/Common/libzip/zip_source_function.c99
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diff --git a/src/Common/libzip/zip_source_function.c b/src/Common/libzip/zip_source_function.c
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+/*
+ zip_source_function.c -- create zip data source from callback function
+ Copyright (C) 1999-2014 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 "zipint.h"
+
+
+ZIP_EXTERN zip_source_t *
+zip_source_function(zip_t *za, zip_source_callback zcb, void *ud)
+{
+ if (za == NULL) {
+ return NULL;
+ }
+
+ return zip_source_function_create(zcb, ud, &za->error);
+}
+
+
+ZIP_EXTERN zip_source_t *
+zip_source_function_create(zip_source_callback zcb, void *ud, zip_error_t *error)
+{
+ zip_source_t *zs;
+
+ if ((zs=_zip_source_new(error)) == NULL)
+ return NULL;
+
+ zs->cb.f = zcb;
+ zs->ud = ud;
+
+ zs->supports = zcb(ud, NULL, 0, ZIP_SOURCE_SUPPORTS);
+ if (zs->supports < 0) {
+ zs->supports = ZIP_SOURCE_SUPPORTS_READABLE;
+ }
+
+ return zs;
+}
+
+
+ZIP_EXTERN void
+zip_source_keep(zip_source_t *src)
+{
+ src->refcount++;
+}
+
+
+zip_source_t *
+_zip_source_new(zip_error_t *error)
+{
+ zip_source_t *src;
+
+ if ((src=(zip_source_t *)malloc(sizeof(*src))) == NULL) {
+ zip_error_set(error, ZIP_ER_MEMORY, 0);
+ return NULL;
+ }
+
+ src->src = NULL;
+ src->cb.f = NULL;
+ src->ud = NULL;
+ src->open_count = 0;
+ src->write_state = ZIP_SOURCE_WRITE_CLOSED;
+ src->source_closed = false;
+ src->source_archive = NULL;
+ src->refcount = 1;
+ zip_error_init(&src->error);
+
+ return src;
+}