| /* $Id$ */ |
| #include <pj/file_io.h> |
| #include <pj/assert.h> |
| #include <pj/errno.h> |
| #include <stdio.h> |
| #include <errno.h> |
| |
| PJ_DEF(pj_status_t) pj_file_open( pj_pool_t *pool, |
| const char *pathname, |
| unsigned flags, |
| pj_oshandle_t *fd) |
| { |
| char mode[8]; |
| char *p = mode; |
| |
| PJ_ASSERT_RETURN(pathname && fd, PJ_EINVAL); |
| PJ_UNUSED_ARG(pool); |
| |
| if ((flags & PJ_O_APPEND) == PJ_O_APPEND) { |
| if ((flags & PJ_O_WRONLY) == PJ_O_WRONLY) { |
| *p++ = 'a'; |
| if ((flags & PJ_O_RDONLY) == PJ_O_RDONLY) |
| *p++ = '+'; |
| } else { |
| /* This is invalid. |
| * Can not specify PJ_O_RDONLY with PJ_O_APPEND! |
| */ |
| } |
| } else { |
| if ((flags & PJ_O_RDONLY) == PJ_O_RDONLY) { |
| *p++ = 'r'; |
| if ((flags & PJ_O_WRONLY) == PJ_O_WRONLY) |
| *p++ = '+'; |
| } else { |
| *p++ = 'w'; |
| } |
| } |
| |
| if (p==mode) |
| return PJ_EINVAL; |
| |
| *p++ = 'b'; |
| *p++ = '\0'; |
| |
| *fd = fopen(pathname, mode); |
| if (*fd == NULL) |
| return PJ_RETURN_OS_ERROR(errno); |
| |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_status_t) pj_file_close(pj_oshandle_t fd) |
| { |
| PJ_ASSERT_RETURN(fd, PJ_EINVAL); |
| if (fclose((FILE*)fd) != 0) |
| return PJ_RETURN_OS_ERROR(errno); |
| |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_status_t) pj_file_write( pj_oshandle_t fd, |
| const void *data, |
| pj_ssize_t *size) |
| { |
| size_t written; |
| |
| clearerr((FILE*)fd); |
| written = fwrite(data, 1, *size, (FILE*)fd); |
| if (ferror((FILE*)fd)) {
|
| *size = -1; |
| return PJ_RETURN_OS_ERROR(errno); |
| } |
| |
| *size = written; |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_status_t) pj_file_read( pj_oshandle_t fd, |
| void *data, |
| pj_ssize_t *size) |
| { |
| size_t bytes; |
| |
| clearerr((FILE*)fd); |
| bytes = fread(data, 1, *size, (FILE*)fd); |
| if (ferror((FILE*)fd)) {
|
| *size = -1; |
| return PJ_RETURN_OS_ERROR(errno); |
| } |
| |
| *size = bytes; |
| return PJ_SUCCESS; |
| } |
|
|
| PJ_DEF(pj_bool_t) pj_file_eof(pj_oshandle_t fd, enum pj_file_access access)
|
| {
|
| PJ_UNUSED_ARG(access);
|
| return feof((FILE*)fd) ? PJ_TRUE : 0;
|
| }
|
| |
| PJ_DEF(pj_status_t) pj_file_setpos( pj_oshandle_t fd, |
| pj_off_t offset, |
| enum pj_file_seek_type whence) |
| { |
| int mode; |
| |
| switch (whence) { |
| case PJ_SEEK_SET: |
| mode = SEEK_SET; break; |
| case PJ_SEEK_CUR: |
| mode = SEEK_CUR; break; |
| case PJ_SEEK_END: |
| mode = SEEK_END; break; |
| default: |
| pj_assert(!"Invalid whence in file_setpos"); |
| return PJ_EINVAL; |
| } |
| |
| if (fseek((FILE*)fd, (long)offset, mode) != 0) |
| return PJ_RETURN_OS_ERROR(errno); |
| |
| return PJ_SUCCESS; |
| } |
| |
| PJ_DEF(pj_status_t) pj_file_getpos( pj_oshandle_t fd, |
| pj_off_t *pos) |
| { |
| long offset; |
| |
| offset = ftell((FILE*)fd); |
| if (offset == -1) { |
| *pos = -1; |
| return PJ_RETURN_OS_ERROR(errno); |
| } |
| |
| *pos = offset; |
| return PJ_SUCCESS; |
| } |
| |
| |