INITIAL COMMIT

This commit is contained in:
2026-06-03 00:51:18 +01:00
commit 7f46c85194
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// vim:fileencoding=utf-8:foldmethod=marker
#include "file.h"
#include "../cpath/cpath.h"
#include "../../common/assert/assert.h"
#include "../../common/aliases/aliases.h"
#include "../../base/array/array.h"
#include "../../base/strings/str8/str8.h"
WFile *wapp_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode) {
wapp_debug_assert(allocator != NULL && filepath != NULL, "`allocator` and `filepath` should not be NULL");
wapp_debug_assert(filepath->size < WAPP_PATH_MAX, "`filepath` exceeds max path limit.");
return _file_open(allocator, filepath, mode);
}
i64 wapp_file_get_current_position(WFile *file) {
wapp_debug_assert(file != NULL, "`file` should not be NULL.");
return _file_seek(file, 0, WAPP_SEEK_CURRENT);
}
i64 wapp_file_seek(WFile *file, i64 offset, FileSeekOrigin origin) {
wapp_debug_assert(file != NULL, "`file` should not be NULL.");
return _file_seek(file, offset, origin);
}
i64 wapp_file_get_length(WFile *file) {
wapp_debug_assert(file != NULL, "`file` should not be NULL.");
i64 current = wapp_file_get_current_position(file);
_file_seek(file, 0, WAPP_SEEK_END);
i64 output = wapp_file_get_current_position(file);
// Restore position
_file_seek(file, current, WAPP_SEEK_START);
return output;
}
u64 wapp_file_read(void *dst_buf, WFile *file, u64 byte_count) {
wapp_debug_assert(dst_buf != NULL && file != NULL,
"`dst_buf` and `file` should not be NULL.");
i64 file_length = wapp_file_get_length(file);
if (file_length < 0) {
return 0;
}
return _file_read(dst_buf, byte_count, file, file_length);
}
i64 wapp_file_write(const void *src_buf, WFile *file, u64 byte_count) {
wapp_debug_assert(src_buf != NULL && file != NULL,
"`src_buf` and `file` should not be NULL.");
return _file_write(src_buf, file, byte_count);
}
u64 wapp_file_read_array(GenericArray dst_buf, WFile *file, u64 item_count) {
wapp_debug_assert(dst_buf != NULL && file != NULL,
"`dst_buf` and `file` should not be NULL.");
i64 _file_length = wapp_file_get_length(file);
if (_file_length < 0) {
return 0;
}
u64 file_length = (u64)_file_length;
u64 item_size = wapp_array_item_size(dst_buf);
u64 dst_byte_capacity = wapp_array_capacity(dst_buf) * item_size;
u64 req_byte_count = item_count * item_size;
u64 copy_byte_count = 0;
if (req_byte_count <= file_length && req_byte_count <= dst_byte_capacity) {
copy_byte_count = req_byte_count;
} else {
copy_byte_count = file_length <= dst_byte_capacity ? file_length : dst_byte_capacity;
}
u64 byte_count = _file_read(dst_buf, copy_byte_count, file, file_length);
if (byte_count == 0) {
return 0;
}
wapp_array_set_count(dst_buf, byte_count / item_size);
return wapp_array_count(dst_buf);
}
i64 wapp_file_write_array(const GenericArray src_buf, WFile *file, u64 item_count) {
wapp_debug_assert(src_buf != NULL && file != NULL,
"`src_buf` and `file` should not be NULL.");
u64 item_size = wapp_array_item_size(src_buf);
u64 src_byte_count = wapp_array_count(src_buf) * item_size;
u64 req_byte_count = item_count * item_size;
u64 to_copy = req_byte_count <= src_byte_count ? req_byte_count : src_byte_count;
i64 bytes_written = _file_write(src_buf, file, to_copy);
if (bytes_written < 0) {
return 0;
}
return (u64)bytes_written / item_size;
}
i32 wapp_file_flush(WFile *file) {
wapp_debug_assert(file != NULL, "`file` should not be NULL.");
return _file_flush(file);
}
i32 wapp_file_close(WFile *file) {
wapp_debug_assert(file != NULL, "`file` should not be NULL.");
return _file_close(file);
}
i32 wapp_file_rename(Str8RO *old_filepath, Str8RO *new_filepath) {
wapp_debug_assert(old_filepath != NULL && new_filepath != NULL,
"`old_filepath` and `new_filepath` should not be NULL");
wapp_debug_assert(old_filepath->size < WAPP_PATH_MAX, "`old_filepath` exceeds max path limit.");
wapp_debug_assert(new_filepath->size < WAPP_PATH_MAX, "`new_filepath` exceeds max path limit.");
return _file_rename(old_filepath, new_filepath);
}
i32 wapp_file_remove(Str8RO *filepath) {
wapp_debug_assert(filepath != NULL, "`filepath` should not be NULL");
wapp_debug_assert(filepath->size < WAPP_PATH_MAX, "`filepath` exceeds max path limit.");
return _file_remove(filepath);
}
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// vim:fileencoding=utf-8:foldmethod=marker
#ifndef FILE_H
#define FILE_H
#include "../../base/mem/allocator/mem_allocator.h"
#include "../../common/aliases/aliases.h"
#include "../../base/strings/str8/str8.h"
#ifdef WAPP_PLATFORM_CPP
BEGIN_C_LINKAGE
#endif // !WAPP_PLATFORM_CPP
typedef struct WFile WFile;
typedef enum {
WAPP_ACCESS_READ, // Equivalent to r
WAPP_ACCESS_WRITE, // Equivalent to w
WAPP_ACCESS_APPEND, // Equivalent to a
WAPP_ACCESS_READ_EX, // Equivalent to r+
WAPP_ACCESS_WRITE_EX, // Equivalent to w+
WAPP_ACCESS_APPEND_EX, // Equivalent to a+
WAPP_ACCESS_WRITE_FAIL_ON_EXIST, // Equivalent to wx
WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX, // Equivalent to wx+
FILE_ACCESS_MODE_COUNT,
} FileAccessMode;
typedef enum {
WAPP_SEEK_START,
WAPP_SEEK_CURRENT,
WAPP_SEEK_END,
FILE_SEEK_ORIGIN_COUNT,
} FileSeekOrigin;
// Return value should not be cached as it's not guaranteed to remain the same. Always call
// wapp_file_stdin to get the standard input stream
wapp_extern WFile *wapp_file_stdin(void);
// Return value should not be cached as it's not guaranteed to remain the same. Always call
// wapp_file_stdout to get the standard output stream
wapp_extern WFile *wapp_file_stdout(void);
// Return value should not be cached as it's not guaranteed to remain the same. Always call
// wapp_file_stderr to get the standard error stream
wapp_extern WFile *wapp_file_stderr(void);
WFile *wapp_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode);
i64 wapp_file_get_current_position(WFile *file);
i64 wapp_file_seek(WFile *file, i64 offset, FileSeekOrigin origin);
i64 wapp_file_get_length(WFile *file);
u64 wapp_file_read(void *dst_buf, WFile *file, u64 byte_count);
i64 wapp_file_write(const void *src_buf, WFile *file, u64 byte_count);
u64 wapp_file_read_array(GenericArray dst_buf, WFile *file, u64 item_count);
i64 wapp_file_write_array(const GenericArray src_buf, WFile *file, u64 item_count);
i32 wapp_file_flush(WFile *file);
i32 wapp_file_close(WFile *file);
i32 wapp_file_rename(Str8RO *old_filepath, Str8RO *new_filepath);
i32 wapp_file_remove(Str8RO *filepath);
wapp_extern WFile *_file_open(const Allocator *allocator, Str8RO *filepath, FileAccessMode mode);
wapp_extern i64 _file_seek(WFile *file, i64 offset, FileSeekOrigin origin);
wapp_extern u64 _file_read(void *dst_buf, u64 byte_count, WFile *file, u64 file_length);
wapp_extern i64 _file_write(const void *src_buf, WFile *file, u64 byte_count);
wapp_extern i32 _file_flush(WFile *file);
wapp_extern i32 _file_close(WFile *file);
wapp_extern i32 _file_rename(Str8RO *old_filepath, Str8RO *new_filepath);
wapp_extern i32 _file_remove(Str8RO *filepath);
#ifdef WAPP_PLATFORM_CPP
END_C_LINKAGE
#endif // !WAPP_PLATFORM_CPP
#endif // !FILE_H
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// 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
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// vim:fileencoding=utf-8:foldmethod=marker
#ifndef FILE_POSIX_H
#define FILE_POSIX_H
#include "../../../common/aliases/aliases.h"
#include "../../../common/platform/platform.h"
#ifdef WAPP_PLATFORM_CPP
BEGIN_C_LINKAGE
#endif // !WAPP_PLATFORM_CPP
#ifdef WAPP_PLATFORM_POSIX
#define END_OF_LINE "\n"
struct WFile {
i32 fd;
};
#endif // !WAPP_PLATFORM_POSIX
#ifdef WAPP_PLATFORM_CPP
END_C_LINKAGE
#endif // !WAPP_PLATFORM_CPP
#endif // !FILE_POSIX_H
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// vim:fileencoding=utf-8:foldmethod=marker
#include "file_win.h"
#include "../../../common/platform/platform.h"
#ifdef WAPP_PLATFORM_WINDOWS
#include "../file.h"
#include "../../cpath/cpath.h"
#include "../../../common/aliases/aliases.h"
#include "../../../base/array/array.h"
#include "../../../base/strings/str8/str8.h"
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#include <fileapi.h>
#include <intsafe.h>
wapp_intern DWORD file_accesses[FILE_ACCESS_MODE_COUNT] = {
[WAPP_ACCESS_READ] = FILE_READ_DATA,
[WAPP_ACCESS_WRITE] = FILE_WRITE_DATA,
[WAPP_ACCESS_APPEND] = FILE_APPEND_DATA,
[WAPP_ACCESS_READ_EX] = FILE_READ_DATA | FILE_WRITE_DATA,
[WAPP_ACCESS_WRITE_EX] = FILE_READ_DATA | FILE_WRITE_DATA,
[WAPP_ACCESS_APPEND_EX] = FILE_READ_DATA | FILE_APPEND_DATA,
[WAPP_ACCESS_WRITE_FAIL_ON_EXIST] = FILE_WRITE_DATA,
[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX] = FILE_READ_DATA | FILE_WRITE_DATA,
};
wapp_intern DWORD creation_dispositions[FILE_ACCESS_MODE_COUNT] = {
[WAPP_ACCESS_READ] = OPEN_EXISTING,
[WAPP_ACCESS_WRITE] = CREATE_ALWAYS,
[WAPP_ACCESS_APPEND] = OPEN_ALWAYS,
[WAPP_ACCESS_READ_EX] = OPEN_EXISTING,
[WAPP_ACCESS_WRITE_EX] = CREATE_ALWAYS,
[WAPP_ACCESS_APPEND_EX] = OPEN_ALWAYS,
[WAPP_ACCESS_WRITE_FAIL_ON_EXIST] = CREATE_NEW,
[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX] = CREATE_NEW,
};
wapp_intern DWORD sharing_modes[FILE_ACCESS_MODE_COUNT] = {
[WAPP_ACCESS_READ] = FILE_SHARE_READ | FILE_SHARE_WRITE,
[WAPP_ACCESS_WRITE] = FILE_SHARE_READ,
[WAPP_ACCESS_APPEND] = FILE_SHARE_READ,
[WAPP_ACCESS_READ_EX] = FILE_SHARE_READ | FILE_SHARE_WRITE,
[WAPP_ACCESS_WRITE_EX] = FILE_SHARE_READ,
[WAPP_ACCESS_APPEND_EX] = FILE_SHARE_READ,
[WAPP_ACCESS_WRITE_FAIL_ON_EXIST] = FILE_SHARE_READ,
[WAPP_ACCESS_WRITE_FAIL_ON_EXIST_EX] = FILE_SHARE_READ,
};
wapp_intern DWORD file_seek_origins[FILE_SEEK_ORIGIN_COUNT] = {
[WAPP_SEEK_START] = FILE_BEGIN,
[WAPP_SEEK_CURRENT] = FILE_CURRENT,
[WAPP_SEEK_END] = FILE_END,
};
WFile *wapp_file_stdin(void) {
wapp_persist WFile _stdin = { .fh = INVALID_HANDLE_VALUE };
_stdin.fh = GetStdHandle(STD_INPUT_HANDLE);
return &_stdin;
}
WFile *wapp_file_stdout(void) {
wapp_persist WFile _stdout = { .fh = INVALID_HANDLE_VALUE };
_stdout.fh = GetStdHandle(STD_OUTPUT_HANDLE);
return &_stdout;
}
WFile *wapp_file_stderr(void) {
wapp_persist WFile _stderr = { .fh = INVALID_HANDLE_VALUE };
_stderr.fh = GetStdHandle(STD_ERROR_HANDLE);
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);
HANDLE fh = CreateFileA((LPCSTR)tmp,
file_accesses[mode],
sharing_modes[mode],
NULL,
creation_dispositions[mode],
FILE_ATTRIBUTE_NORMAL,
NULL);
if (fh == INVALID_HANDLE_VALUE) {
return NULL;
}
WFile *output = wapp_mem_allocator_alloc(allocator, sizeof(WFile));
if (output) {
output->fh = fh;
}
return output;
}
i64 _file_seek(WFile *file, i64 offset, FileSeekOrigin origin) {
LARGE_INTEGER distance = {0};
LARGE_INTEGER output = {0};
distance.QuadPart = offset;
if (!SetFilePointerEx(file->fh, distance, &output, file_seek_origins[origin])) {
return -1;
}
return output.QuadPart;
}
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;
wapp_debug_assert(copy_byte_count <= DWORD_MAX, "Attempting to read large number of bytes at once");
DWORD read_count = 0;
if (!ReadFile(file->fh, dst_buf, (DWORD)copy_byte_count, &read_count, NULL)) {
return 0;
}
return (u64)read_count;
}
i64 _file_write(const void *src_buf, WFile *file, u64 byte_count) {
wapp_debug_assert(byte_count <= DWORD_MAX, "Attempting to write large number of bytes at once");
DWORD write_count = 0;
if (!WriteFile(file->fh, src_buf, (DWORD)byte_count, &write_count, NULL)) {
return 0;
}
return (i64)write_count;
}
i32 _file_flush(WFile *file) {
if (!FlushFileBuffers(file->fh)) {
return -1;
}
return 0;
}
i32 _file_close(WFile *file) {
if (!CloseHandle(file->fh)) {
return -1;
}
return 0;
}
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);
if (!MoveFile((LPCSTR)old_tmp, (LPCSTR)new_tmp)) {
return -1;
}
return 0;
}
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);
if (!DeleteFile((LPCSTR)tmp)) {
return -1;
}
return 0;
}
#endif // !WAPP_PLATFORM_WINDOWS
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// vim:fileencoding=utf-8:foldmethod=marker
#ifndef FILE_WIN_H
#define FILE_WIN_H
#include "../../../common/aliases/aliases.h"
#include "../../../common/platform/platform.h"
#ifdef WAPP_PLATFORM_CPP
BEGIN_C_LINKAGE
#endif // !WAPP_PLATFORM_CPP
#ifdef WAPP_PLATFORM_WINDOWS
#define END_OF_LINE "\r\n"
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#include <fileapi.h>
struct WFile {
HANDLE fh;
};
#endif // !WAPP_PLATFORM_WINDOWS
#ifdef WAPP_PLATFORM_CPP
END_C_LINKAGE
#endif // !WAPP_PLATFORM_CPP
#endif // !FILE_WIN_H