INITIAL COMMIT

2026-06-03 00:51:18 +01:00
commit 7f46c85194
76 changed files with 4845 additions and 0 deletions
@@ -0,0 +1,134 @@
+// vim:fileencoding=utf-8:foldmethod=marker
+
+#include "file_posix.h"
+#include "../../../common/platform/platform.h"
+
+#ifdef WAPP_PLATFORM_POSIX
+
+#include "../file.h"
+#include "../../cpath/cpath.h"
+#include "../../../common/aliases/aliases.h"
+#include "../../../base/array/array.h"
+#include "../../../base/strings/str8/str8.h"
+
+#ifdef WAPP_PLATFORM_APPLE
+#define _FILE_OFFSET_BITS 64
+#define lseek64 lseek
+#endif // !WAPP_PLATFORM_APPLE
+
+#define __USE_LARGEFILE64
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+wapp_intern i32 file_flags[FILE_ACCESS_MODE_COUNT] = {
+	[WAPP_ACCESS_READ]                       = O_RDONLY,
+	[WAPP_ACCESS_WRITE]                      = O_WRONLY | O_CREAT,
+	[WAPP_ACCESS_APPEND]                     = O_WRONLY | O_APPEND | O_CREAT,
+	[WAPP_ACCESS_READ_EX]                    = O_RDWR,
+	[WAPP_ACCESS_WRITE_EX]                   = O_RDWR | O_CREAT,
+	[WAPP_ACCESS_APPEND_EX]                  = O_RDWR | O_APPEND | O_CREAT,
+	[WAPP_ACCESS_WRITE_FAIL_ON_EXIST]        = O_WRONLY | O_CREAT | O_EXCL,
+	[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX]     = O_RDWR | O_CREAT | O_EXCL,
+};
+
+wapp_intern mode_t file_modes[FILE_ACCESS_MODE_COUNT] = {
+	[WAPP_ACCESS_READ]                       = 0,
+	[WAPP_ACCESS_WRITE]                      = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+	[WAPP_ACCESS_APPEND]                     = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+	[WAPP_ACCESS_READ_EX]                    = 0,
+	[WAPP_ACCESS_WRITE_EX]                   = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+	[WAPP_ACCESS_APPEND_EX]                  = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+	[WAPP_ACCESS_WRITE_FAIL_ON_EXIST]        = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+	[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX]     = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+};
+
+wapp_intern i32 file_seek_origins[FILE_SEEK_ORIGIN_COUNT] = {
+	[WAPP_SEEK_START]   = SEEK_SET,
+	[WAPP_SEEK_CURRENT] = SEEK_CUR,
+	[WAPP_SEEK_END]     = SEEK_END,
+};
+
+WFile *wapp_file_stdin(void) {
+	wapp_persist WFile _stdin  = { .fd = STDIN_FILENO };
+	return &_stdin;
+}
+
+WFile *wapp_file_stdout(void) {
+	wapp_persist WFile _stdout = { .fd = STDOUT_FILENO };
+	return &_stdout;
+}
+
+WFile *wapp_file_stderr(void) {
+	wapp_persist WFile _stderr = { .fd = STDERR_FILENO };
+	return &_stderr;
+}
+
+WFile *_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode) {
+	wapp_persist c8 tmp[WAPP_PATH_MAX] = {0};
+	memset(tmp, 0, WAPP_PATH_MAX);
+	memcpy(tmp, filepath->buf, filepath->size);
+
+	i32 fd = open((const char *)tmp, file_flags[mode], file_modes[mode]);
+	if (fd < 0) {
+		return NULL;
+	}
+
+	WFile *output = wapp_mem_allocator_alloc(allocator, sizeof(WFile));
+	if (output) {
+		output->fd = fd;
+	}
+
+	return output;
+}
+
+i64 _file_seek(WFile *file, i64 offset, FileSeekOrigin origin) {
+	return lseek64(file->fd, offset, file_seek_origins[origin]);
+}
+
+u64 _file_read(void *dst_buf, u64 byte_count, WFile *file, u64 file_length) {
+	u64 copy_byte_count = file_length <= byte_count ? file_length : byte_count;
+
+	i64 count = read(file->fd, dst_buf, copy_byte_count);
+	if (count < 0) { return 0; }
+
+	return count;
+}
+
+i64 _file_write(const void *src_buf, WFile *file, u64 byte_count) {
+	return write(file->fd, src_buf, byte_count);
+}
+
+i32 _file_flush(WFile *file) {
+	return fsync(file->fd);
+}
+
+i32 _file_close(WFile *file) {
+	return close(file->fd);
+}
+
+i32 _file_rename(Str8RO *old_filepath, Str8RO *new_filepath) {
+	wapp_persist c8 old_tmp[WAPP_PATH_MAX] = {0};
+	wapp_persist c8 new_tmp[WAPP_PATH_MAX] = {0};
+	memset(old_tmp, 0, WAPP_PATH_MAX);
+	memcpy(old_tmp, old_filepath->buf, old_filepath->size);
+	memset(new_tmp, 0, WAPP_PATH_MAX);
+	memcpy(new_tmp, new_filepath->buf, new_filepath->size);
+
+	i32 link_result = link((const char *)old_tmp, (const char *)new_tmp);
+	if (link_result == 0) {
+		_file_remove(old_filepath);
+	}
+
+	return link_result;
+}
+
+i32 _file_remove(Str8RO *filepath) {
+	wapp_persist c8 tmp[WAPP_PATH_MAX] = {0};
+	memset(tmp, 0, WAPP_PATH_MAX);
+	memcpy(tmp, filepath->buf, filepath->size);
+
+	return unlink((const char *)tmp);
+}
+
+#endif // !WAPP_PLATFORM_POSIX