Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 190 insertions, 0 deletions

diff --git a/ext/zip/lib/zip_source_zip.c b/ext/zip/lib/zip_source_zip.c
new file mode 100644
index 0000000..228803c
--- /dev/null
+++ b/ext/zip/lib/zip_source_zip.c
@@ -0,0 +1,190 @@
+/*
+  zip_source_zip.c -- create data source from zip file
+  Copyright (C) 1999-2009 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 read_zip {
+    struct zip_file *zf;
+    struct zip_stat st;
+    zip_uint64_t off;
+    zip_int64_t len;
+};
+
+static zip_int64_t read_zip(void *st, void *data, zip_uint64_t len,
+			enum zip_source_cmd cmd);
+
+
+
+ZIP_EXTERN(struct zip_source *)
+zip_source_zip(struct zip *za, struct zip *srcza, zip_uint64_t srcidx,
+	       int flags, zip_uint64_t start, zip_int64_t len)
+{
+    struct zip_error error;
+    struct zip_source *zs;
+    struct read_zip *p;
+
+    /* XXX: ZIP_FL_RECOMPRESS */
+
+    if (za == NULL)
+	return NULL;
+
+    if (srcza == NULL || len < -1 || srcidx < 0 || srcidx >= srcza->nentry) {
+	_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
+	return NULL;
+    }
+
+    if ((flags & ZIP_FL_UNCHANGED) == 0
+	&& ZIP_ENTRY_DATA_CHANGED(srcza->entry+srcidx)) {
+	_zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
+	return NULL;
+    }
+
+    if (len == 0)
+	len = -1;
+
+    if (start == 0 && len == -1 && (flags & ZIP_FL_RECOMPRESS) == 0)
+	flags |= ZIP_FL_COMPRESSED;
+    else
+	flags &= ~ZIP_FL_COMPRESSED;
+
+    if ((p=(struct read_zip *)malloc(sizeof(*p))) == NULL) {
+	_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
+	return NULL;
+    }
+	
+    _zip_error_copy(&error, &srcza->error);
+	
+    if (zip_stat_index(srcza, srcidx, flags, &p->st) < 0
+	|| (p->zf=zip_fopen_index(srcza, srcidx, flags)) == NULL) {
+	free(p);
+	_zip_error_copy(&za->error, &srcza->error);
+	_zip_error_copy(&srcza->error, &error);
+	
+	return NULL;
+    }
+    p->off = start;
+    p->len = len;
+
+    if ((flags & ZIP_FL_COMPRESSED) == 0) {
+	p->st.size = p->st.comp_size = len;
+	p->st.comp_method = ZIP_CM_STORE;
+	p->st.crc = 0;
+    }
+    
+    if ((zs=zip_source_function(za, read_zip, p)) == NULL) {
+	free(p);
+	return NULL;
+    }
+
+    return zs;
+}
+
+
+
+static zip_int64_t
+read_zip(void *state, void *data, zip_uint64_t len, enum zip_source_cmd cmd)
+{
+    struct read_zip *z;
+    char b[8192], *buf;
+    int i;
+    zip_uint64_t n;
+
+    z = (struct read_zip *)state;
+    buf = (char *)data;
+
+    switch (cmd) {
+    case ZIP_SOURCE_OPEN:
+	for (n=0; n<z->off; n+= i) {
+	    i = (z->off-n > sizeof(b) ? sizeof(b) : z->off-n);
+	    if ((i=zip_fread(z->zf, b, i)) < 0) {
+		zip_fclose(z->zf);
+		z->zf = NULL;
+		return -1;
+	    }
+	}
+	return 0;
+	
+    case ZIP_SOURCE_READ:
+	if (z->len != -1)
+	    n = len > z->len ? z->len : len;
+	else
+	    n = len;
+	
+
+	if ((i=zip_fread(z->zf, buf, n)) < 0)
+	    return -1;
+
+	if (z->len != -1)
+	    z->len -= i;
+
+	return i;
+	
+    case ZIP_SOURCE_CLOSE:
+	return 0;
+
+    case ZIP_SOURCE_STAT:
+	if (len < sizeof(z->st))
+	    return -1;
+	len = sizeof(z->st);
+
+	memcpy(data, &z->st, len);
+	return len;
+
+    case ZIP_SOURCE_ERROR:
+	{
+	    int *e;
+
+	    if (len < sizeof(int)*2)
+		return -1;
+
+	    e = (int *)data;
+	    zip_file_error_get(z->zf, e, e+1);
+	}
+	return sizeof(int)*2;
+
+    case ZIP_SOURCE_FREE:
+	zip_fclose(z->zf);
+	free(z);
+	return 0;
+
+    default:
+	;
+    }
+
+    return -1;
+}