98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
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/*
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zip_source_function.c -- create zip data source from callback function
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Copyright (C) 1999-2017 Dieter Baron and Thomas Klausner
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This file is part of libzip, a library to manipulate ZIP archives.
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The authors can be contacted at <libzip@nih.at>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. The names of the authors may not be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include "zipint.h"
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ZIP_EXTERN zip_source_t *
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zip_source_function(zip_t *za, zip_source_callback zcb, void *ud) {
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if (za == NULL) {
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return NULL;
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}
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return zip_source_function_create(zcb, ud, &za->error);
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}
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ZIP_EXTERN zip_source_t *
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zip_source_function_create(zip_source_callback zcb, void *ud, zip_error_t *error) {
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zip_source_t *zs;
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if ((zs = _zip_source_new(error)) == NULL)
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return NULL;
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zs->cb.f = zcb;
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zs->ud = ud;
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zs->supports = zcb(ud, NULL, 0, ZIP_SOURCE_SUPPORTS);
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if (zs->supports < 0) {
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zs->supports = ZIP_SOURCE_SUPPORTS_READABLE;
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}
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return zs;
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}
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ZIP_EXTERN void
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zip_source_keep(zip_source_t *src) {
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src->refcount++;
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}
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zip_source_t *
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_zip_source_new(zip_error_t *error) {
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zip_source_t *src;
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if ((src = (zip_source_t *)malloc(sizeof(*src))) == NULL) {
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zip_error_set(error, ZIP_ER_MEMORY, 0);
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return NULL;
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}
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src->src = NULL;
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src->cb.f = NULL;
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src->ud = NULL;
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src->open_count = 0;
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src->write_state = ZIP_SOURCE_WRITE_CLOSED;
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src->source_closed = false;
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src->source_archive = NULL;
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src->refcount = 1;
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zip_error_init(&src->error);
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src->eof = false;
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src->had_read_error = false;
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return src;
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}
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