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/*
* List contents of a directory in an alphabetical order.
*
* Compile this file with Visual Studio and run the produced command in
* console with a directory name argument. For example, command
*
* scandir "c:\Program Files"
*
* might output something like
*
* ./
* ../
* 7-Zip/
* Internet Explorer/
* Microsoft Visual Studio 9.0/
* Microsoft.NET/
* Mozilla Firefox/
*
* Copyright (C) 1998-2019 Toni Ronkko
* This file is part of dirent. Dirent may be freely distributed
* under the MIT license. For all details and documentation, see
* https://github.com/tronkko/dirent
*/
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <locale.h>
static void list_directory(const char *dirname);
static int _main(int argc, char *argv[]);
static int
_main(int argc, char *argv[])
{
/* For each directory in command line */
int i = 1;
while (i < argc) {
list_directory(argv[i]);
i++;
}
/* List current working directory if no arguments on command line */
if (argc == 1)
list_directory(".");
return EXIT_SUCCESS;
}
/*
* List files and directories within a directory.
*/
static void
list_directory(
const char *dirname)
{
/* Scan files in directory */
struct dirent **files;
int n = scandir(dirname, &files, NULL, alphasort);
if (n < 0) {
fprintf(stderr,
"Cannot open %s (%s)\n", dirname, strerror(errno));
exit(EXIT_FAILURE);
}
/* Loop through file names */
for (int i = 0; i < n; i++) {
/* Get pointer to file entry */
struct dirent *ent = files[i];
/* Output file name */
switch (ent->d_type) {
case DT_REG:
printf("%s\n", ent->d_name);
break;
case DT_DIR:
printf("%s/\n", ent->d_name);
break;
case DT_LNK:
printf("%s@\n", ent->d_name);
break;
default:
printf("%s*\n", ent->d_name);
}
}
/* Release file names */
for (int i = 0; i < n; i++) {
free(files[i]);
}
free(files);
}
/* Stub for converting arguments to UTF-8 on Windows */
#ifdef _MSC_VER
int
wmain(int argc, wchar_t *argv[])
{
/* Select UTF-8 locale */
setlocale(LC_ALL, ".utf8");
SetConsoleCP(CP_UTF8);
SetConsoleOutputCP(CP_UTF8);
/* Allocate memory for multi-byte argv table */
char **mbargv;
mbargv = (char**) malloc(argc * sizeof(char*));
if (!mbargv) {
puts("Out of memory");
exit(3);
}
/* Convert each argument in argv to UTF-8 */
for (int i = 0; i < argc; i++) {
size_t n;
wcstombs_s(&n, NULL, 0, argv[i], 0);
/* Allocate room for ith argument */
mbargv[i] = (char*) malloc(n + 1);
if (!mbargv[i]) {
puts("Out of memory");
exit(3);
}
/* Convert ith argument to utf-8 */
wcstombs_s(NULL, mbargv[i], n + 1, argv[i], n);
}
/* Pass UTF-8 converted arguments to the main program */
int errorcode = _main(argc, mbargv);
/* Release UTF-8 arguments */
for (int i = 0; i < argc; i++) {
free(mbargv[i]);
}
/* Release the argument table */
free(mbargv);
return errorcode;
}
#else
int
main(int argc, char *argv[])
{
return _main(argc, argv);
}
#endif
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