119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
// vim:fileencoding=utf-8:foldmethod=marker
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#include "file_posix.h"
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#include "../../../common/platform/platform.h"
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#ifdef WAPP_PLATFORM_POSIX
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#include "../file.h"
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#include "../../cpath/cpath.h"
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#include "../../../common/aliases/aliases.h"
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#include "../../../base/array/array.h"
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#include "../../../base/strings/str8/str8.h"
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#ifdef WAPP_PLATFORM_APPLE
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#define _FILE_OFFSET_BITS 64
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#define lseek64 lseek
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#endif // !WAPP_PLATFORM_APPLE
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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wapp_intern i32 file_flags[FILE_ACCESS_MODE_COUNT] = {
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[WAPP_ACCESS_READ] = O_RDONLY,
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[WAPP_ACCESS_WRITE] = O_WRONLY | O_CREAT,
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[WAPP_ACCESS_APPEND] = O_WRONLY | O_APPEND | O_CREAT,
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[WAPP_ACCESS_READ_EX] = O_RDWR,
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[WAPP_ACCESS_WRITE_EX] = O_RDWR | O_CREAT,
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[WAPP_ACCESS_APPEND_EX] = O_RDWR | O_APPEND | O_CREAT,
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[WAPP_ACCESS_WRITE_FAIL_ON_EXIST] = O_WRONLY | O_CREAT | O_EXCL,
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[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX] = O_RDWR | O_CREAT | O_EXCL,
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};
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wapp_intern mode_t file_modes[FILE_ACCESS_MODE_COUNT] = {
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[WAPP_ACCESS_READ] = 0,
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[WAPP_ACCESS_WRITE] = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
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[WAPP_ACCESS_APPEND] = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
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[WAPP_ACCESS_READ_EX] = 0,
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[WAPP_ACCESS_WRITE_EX] = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
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[WAPP_ACCESS_APPEND_EX] = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
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[WAPP_ACCESS_WRITE_FAIL_ON_EXIST] = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
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[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX] = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
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};
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wapp_intern i32 file_seek_origins[FILE_SEEK_ORIGIN_COUNT] = {
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[WAPP_SEEK_START] = SEEK_SET,
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[WAPP_SEEK_CURRENT] = SEEK_CUR,
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[WAPP_SEEK_END] = SEEK_END,
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};
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WFile *_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode) {
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wapp_persist c8 tmp[WAPP_PATH_MAX] = {0};
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memset(tmp, 0, WAPP_PATH_MAX);
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memcpy(tmp, filepath->buf, filepath->size);
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i32 fd = open((const char *)tmp, file_flags[mode], file_modes[mode]);
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if (fd < 0) {
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return NULL;
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}
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WFile *output = wapp_mem_allocator_alloc(allocator, sizeof(WFile));
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if (output) {
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output->fd = fd;
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}
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return output;
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}
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i64 _file_seek(WFile *file, i64 offset, FileSeekOrigin origin) {
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return lseek64(file->fd, offset, file_seek_origins[origin]);
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}
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u64 _file_read(void *dst_buf, u64 byte_count, WFile *file, u64 file_length) {
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u64 copy_byte_count = file_length <= byte_count ? file_length : byte_count;
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i64 count = read(file->fd, dst_buf, copy_byte_count);
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if (count < 0) { return 0; }
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return count;
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}
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i64 _file_write(const void *src_buf, WFile *file, u64 byte_count) {
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return write(file->fd, src_buf, byte_count);
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}
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i32 _file_flush(WFile *file) {
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return fsync(file->fd);
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}
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i32 _file_close(WFile *file) {
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return close(file->fd);
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}
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i32 _file_rename(Str8RO *old_filepath, Str8RO *new_filepath) {
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wapp_persist c8 old_tmp[WAPP_PATH_MAX] = {0};
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wapp_persist c8 new_tmp[WAPP_PATH_MAX] = {0};
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memset(old_tmp, 0, WAPP_PATH_MAX);
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memcpy(old_tmp, old_filepath->buf, old_filepath->size);
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memset(new_tmp, 0, WAPP_PATH_MAX);
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memcpy(new_tmp, new_filepath->buf, new_filepath->size);
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i32 link_result = link((const char *)old_tmp, (const char *)new_tmp);
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if (link_result == 0) {
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_file_remove(old_filepath);
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}
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return link_result;
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}
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i32 _file_remove(Str8RO *filepath) {
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wapp_persist c8 tmp[WAPP_PATH_MAX] = {0};
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memset(tmp, 0, WAPP_PATH_MAX);
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memcpy(tmp, filepath->buf, filepath->size);
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return unlink((const char *)tmp);
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}
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#endif // !WAPP_PLATFORM_POSIX
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