2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include "archive_platform.h"
27 __FBSDID("$FreeBSD$");
29 #ifdef HAVE_SYS_STAT_H
53 struct read_FILE_data {
60 static int file_close(struct archive *, void *);
61 static ssize_t file_read(struct archive *, void *, const void **buff);
62 #if ARCHIVE_API_VERSION < 2
63 static ssize_t file_skip(struct archive *, void *, size_t request);
65 static off_t file_skip(struct archive *, void *, off_t request);
69 archive_read_open_FILE(struct archive *a, FILE *f)
72 struct read_FILE_data *mine;
73 size_t block_size = 128 * 1024;
76 archive_clear_error(a);
77 mine = (struct read_FILE_data *)malloc(sizeof(*mine));
78 b = malloc(block_size);
79 if (mine == NULL || b == NULL) {
80 archive_set_error(a, ENOMEM, "No memory");
83 return (ARCHIVE_FATAL);
85 mine->block_size = block_size;
89 * If we can't fstat() the file, it may just be that it's not
90 * a file. (FILE * objects can wrap many kinds of I/O
91 * streams, some of which don't support fileno()).)
93 if (fstat(fileno(mine->f), &st) == 0 && S_ISREG(st.st_mode)) {
94 archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino);
95 /* Enable the seek optimization only for regular files. */
100 #if defined(__CYGWIN__) || defined(_WIN32)
101 setmode(fileno(mine->f), O_BINARY);
104 return (archive_read_open2(a, mine, NULL, file_read,
105 file_skip, file_close));
109 file_read(struct archive *a, void *client_data, const void **buff)
111 struct read_FILE_data *mine = (struct read_FILE_data *)client_data;
114 *buff = mine->buffer;
115 bytes_read = fread(mine->buffer, 1, mine->block_size, mine->f);
116 if (bytes_read < 0) {
117 archive_set_error(a, errno, "Error reading file");
122 #if ARCHIVE_API_VERSION < 2
124 file_skip(struct archive *a, void *client_data, size_t request)
127 file_skip(struct archive *a, void *client_data, off_t request)
130 struct read_FILE_data *mine = (struct read_FILE_data *)client_data;
132 (void)a; /* UNUSED */
135 * If we can't skip, return 0 as the amount we did step and
136 * the caller will work around by reading and discarding.
144 if (fseeko(mine->f, request, SEEK_CUR) != 0)
146 if (fseek(mine->f, request, SEEK_CUR) != 0)
156 file_close(struct archive *a, void *client_data)
158 struct read_FILE_data *mine = (struct read_FILE_data *)client_data;
160 (void)a; /* UNUSED */
161 if (mine->buffer != NULL)