104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "dirent.h"
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#include <errno.h>
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#include <Windows.h>
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typedef struct DIR {
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HANDLE findHandle;
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WIN32_FIND_DATA findData;
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struct dirent result;
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} DIR;
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DIR *opendir(const char *name) {
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if (!name || !*name) {
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errno = ENOENT;
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return NULL;
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}
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DIR *dir = malloc(sizeof(DIR));
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if (!dir) {
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errno = ENOMEM;
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return NULL;
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}
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dir->result.d_ino = 0;
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dir->result.d_name = NULL;
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dir->findHandle = INVALID_HANDLE_VALUE;
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const size_t nameLen = strlen(name);
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char *path = malloc(nameLen + 3); // allocate enough for adding "/*"
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if (!path) {
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free(dir);
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errno = ENOMEM;
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return NULL;
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}
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strcpy(path, name);
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// assure path ends with wildcard
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const char lastChar = path[nameLen - 1];
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if (lastChar != '*') {
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const char *appendWC = (lastChar != '/' && lastChar != '\\') ? "/*" : "*";
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strcat(path, appendWC);
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}
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// init
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dir->findHandle = FindFirstFile(path, &dir->findData);
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free(path);
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if (dir->findHandle == INVALID_HANDLE_VALUE) {
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free(dir);
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errno = ENOENT;
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return NULL;
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}
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return dir;
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}
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int closedir(DIR *dir) {
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if (dir) {
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FindClose(dir->findHandle);
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free(dir);
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return 0;
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} else {
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errno = EBADF;
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return -1;
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}
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}
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struct dirent *readdir(DIR *dir) {
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if (!dir) {
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errno = EBADF;
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return NULL;
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}
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// first pass d_name is NULL so use result from FindFirstFile in opendir, else use FindNextFile
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if (!dir->result.d_name || FindNextFile(dir->findHandle, &dir->findData)) {
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dir->result.d_name = dir->findData.cFileName;
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return &dir->result;
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}
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return NULL;
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}
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