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160 lines
3.0 KiB
C
160 lines
3.0 KiB
C
// SPDX-License-Identifier: LGPL-3.0-or-later
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/**
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* \file sys/fs_windows.c
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*
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* System specific filesystem utilities over Windows.
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*
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* \copyright The DoubleFourteen Code Forge (C) All Rights Reserved
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* \author Lorenzo Cogotti
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*/
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#include "sys/fs.h"
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#include "sys/err_local.h"
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#include <errno.h>
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#include <io.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <windows.h>
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#error "Sorry, not fully implemented yet!"
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typedef union {
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wchar_t wstr[_MAX_PATH + 1];
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char str[(_MAX_PATH + 1) * sizeof(wchar_t)];
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} Pathbuf;
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static THREAD_LOCAL Pathbuf pathbuf;
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static wchar_t *Sys_Utf8PathToW(const char *path)
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{
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int n = MultiByteToWideChar(CP_UTF8, 0, dir, -1, pathbuf.wstr, ARRAY_SIZE(pathbuf.wstr));
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if (n < 0) {
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Sys_SetErrStat(GetLastError(), "MultiByteToWideChar() failed");
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return NULL;
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}
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return pathbuf.wstr;
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}
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static char *Sys_WPathToUtf8(const wchar_t *path)
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{
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int n = WideCharToMultiByte(CP_UTF16, 0, path, -1, pathbuf.str, sizeof(pathbuf.str));
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if (n < 0) {
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Sys_GetErrStat(GetLastError(), "WideCharToMultiByte() failed");
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return NULL;
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}
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return pathbuf.str;
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}
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Judgement Sys_SetEof(Fildes fd)
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{
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if (!SetEndOfFile(fd)) {
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Sys_SetErrStat(GetLastError(), "SetEndOfFile() failed");
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return NG;
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}
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return OK;
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}
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void Sys_Fclose(Fildes fd)
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{
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CloseHandle(fd);
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}
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typedef struct FileList dfFileList;
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struct FileList {
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FileList *next;
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unsigned len;
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char name[1]; // dynamically sized len+1
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};
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char **Sys_ListFiles(const char *dir, unsigned *nfiles, const char *pat)
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{
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if (!pat)
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pat = "";
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int flag;
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if (strcmp(pat, "/") == 0) {
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pat = "";
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flag = _A_SUBDIR;
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} else {
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flag = 0;
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}
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char *search = (char *) alloca(strlen(dir) + 1 + 1 + strlen(pat) + 1);
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if (sprintf(search, "%s\\*%s", dir, pat) < 0) {
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Sys_SetErrStat(errno, "sprintf() failed");
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return NULL;
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}
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wchar_t *wsearch = Sys_Utf8PathToW(search);
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if (!wsearch)
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return NULL; // error already set
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FileList *entries = NULL;
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unsigned count = 0;
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size_t nchars = 0;
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errno = 0;
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struct _wfinddata_t finddata;
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intptr_t findhn = _wfindfirst(wsearch, &finddata);
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if (findhn != -1) {
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// Scan directory
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do {
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if (finddata.attrib & flag) {
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// remember this file
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char *path = Sys_WPathToUtf8(finddata.name);
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size_t n = strlen(path);
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count++;
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nchars += n + 1;
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FileList *e = (FileList *) alloca(sizeof(*e) + n);
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e->next = entries;
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e->len = n;
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memcpy(e->name, path, n + 1);
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entries = e;
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}
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} while (_wfindnext(findhn, &finddata) == 0);
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}
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if (errno != 0) {
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Sys_SetErrStat(errno, "_wfindfirst()/_wfindnext()");
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goto fail;
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}
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_findclose(findhn);
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char **files = (char **) malloc(sizeof(*files) * (count + 1) + nchars);
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if (!files) {
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Sys_OutOfMemory();
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return NULL;
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}
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char *namep = (char *) (files + count + 1);
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for (unsigned i = 0; i < count; i++) {
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files[i] = namep;
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size_t n = entries->len + 1;
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memcpy(namep, entries->name, n);
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namep += n;
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entries = entries->next;
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}
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files[count] = NULL;
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if (nfiles)
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*nfiles = count;
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return files;
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fail:
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_findclose(findhn);
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return NULL;
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}
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