1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
23 ***************************************************************************/
30 #include "configuration.h"
32 #include "replacements.h"
37 enum fileio_type type
;
38 enum fileio_access access
;
42 static inline int fileio_close_local(struct fileio
*fileio
)
44 int retval
= fclose(fileio
->file
);
47 LOG_ERROR("BUG: fileio->file not a valid file descriptor");
49 LOG_ERROR("couldn't close %s: %s", fileio
->url
, strerror(errno
));
51 return ERROR_FILEIO_OPERATION_FAILED
;
57 static inline int fileio_open_local(struct fileio
*fileio
)
62 switch (fileio
->access
) {
64 strcpy(file_access
, "r");
67 strcpy(file_access
, "w");
69 case FILEIO_READWRITE
:
70 strcpy(file_access
, "w+");
73 strcpy(file_access
, "a");
75 case FILEIO_APPENDREAD
:
76 strcpy(file_access
, "a+");
79 LOG_ERROR("BUG: access neither read, write nor readwrite");
80 return ERROR_COMMAND_SYNTAX_ERROR
;
83 /* win32 always opens in binary mode */
85 if (fileio
->type
== FILEIO_BINARY
)
87 strcat(file_access
, "b");
89 fileio
->file
= open_file_from_path(fileio
->url
, file_access
);
91 LOG_ERROR("couldn't open %s", fileio
->url
);
92 return ERROR_FILEIO_OPERATION_FAILED
;
97 if ((fileio
->access
!= FILEIO_WRITE
) || (fileio
->access
== FILEIO_READWRITE
)) {
98 /* NB! Here we use fseek() instead of stat(), since stat is a
99 * more advanced operation that might not apply to e.g. a disk path
100 * that refers to e.g. a tftp client */
103 result
= fseek(fileio
->file
, 0, SEEK_END
);
105 file_size
= ftell(fileio
->file
);
107 result2
= fseek(fileio
->file
, 0, SEEK_SET
);
109 if ((file_size
< 0) || (result
< 0) || (result2
< 0)) {
110 fileio_close_local(fileio
);
111 return ERROR_FILEIO_OPERATION_FAILED
;
115 fileio
->size
= file_size
;
120 int fileio_open(struct fileio
**fileio
, const char *url
,
121 enum fileio_access access_type
, enum fileio_type type
)
126 tmp
= malloc(sizeof(struct fileio
));
129 tmp
->access
= access_type
;
130 tmp
->url
= strdup(url
);
132 retval
= fileio_open_local(tmp
);
134 if (retval
!= ERROR_OK
) {
145 int fileio_close(struct fileio
*fileio
)
149 retval
= fileio_close_local(fileio
);
157 int fileio_feof(struct fileio
*fileio
)
159 return feof(fileio
->file
);
162 int fileio_seek(struct fileio
*fileio
, size_t position
)
166 retval
= fseek(fileio
->file
, position
, SEEK_SET
);
169 LOG_ERROR("couldn't seek file %s: %s", fileio
->url
, strerror(errno
));
170 return ERROR_FILEIO_OPERATION_FAILED
;
176 static int fileio_local_read(struct fileio
*fileio
, size_t size
, void *buffer
,
181 retval
= fread(buffer
, 1, size
, fileio
->file
);
182 *size_read
= (retval
>= 0) ? retval
: 0;
184 return (retval
< 0) ? retval
: ERROR_OK
;
187 int fileio_read(struct fileio
*fileio
, size_t size
, void *buffer
,
190 return fileio_local_read(fileio
, size
, buffer
, size_read
);
193 int fileio_read_u32(struct fileio
*fileio
, uint32_t *data
)
199 retval
= fileio_local_read(fileio
, sizeof(uint32_t), buf
, &size_read
);
201 if (ERROR_OK
== retval
&& sizeof(uint32_t) != size_read
)
203 if (ERROR_OK
== retval
)
204 *data
= be_to_h_u32(buf
);
209 static int fileio_local_fgets(struct fileio
*fileio
, size_t size
, void *buffer
)
211 if (fgets(buffer
, size
, fileio
->file
) == NULL
)
212 return ERROR_FILEIO_OPERATION_FAILED
;
217 int fileio_fgets(struct fileio
*fileio
, size_t size
, void *buffer
)
219 return fileio_local_fgets(fileio
, size
, buffer
);
222 static int fileio_local_write(struct fileio
*fileio
, size_t size
,
223 const void *buffer
, size_t *size_written
)
227 retval
= fwrite(buffer
, 1, size
, fileio
->file
);
228 *size_written
= (retval
>= 0) ? retval
: 0;
230 return (retval
< 0) ? retval
: ERROR_OK
;
233 int fileio_write(struct fileio
*fileio
, size_t size
, const void *buffer
,
234 size_t *size_written
)
238 retval
= fileio_local_write(fileio
, size
, buffer
, size_written
);
240 if (retval
== ERROR_OK
)
241 fileio
->size
+= *size_written
;
246 int fileio_write_u32(struct fileio
*fileio
, uint32_t data
)
250 h_u32_to_be(buf
, data
);
253 retval
= fileio_write(fileio
, 4, buf
, &size_written
);
255 if (ERROR_OK
== retval
&& size_written
!= sizeof(uint32_t))
264 * For now this can not fail, but that's because a seek was executed
267 * Avoiding the seek on startup opens up for using streams.
270 int fileio_size(struct fileio
*fileio
, size_t *size
)
272 *size
= fileio
->size
;
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