求助。如何更改readdir函数读出的目录流编码？
在用C语言编译后的目录列表中，对gb2312码的中文目录和中文文件名显示乱码，我试着将de->d_name更改编码不成功（注：已有UTF-8中文字库），如何才能正确显示中文目录和中文文件名。
char** gather_files(const char* directory, const char* fileExtensionOrDirectory, int* numFiles)
{
char path[PATH_MAX] = "";
DIR *dir;
struct dirent *de;
int total = 0;
int i;
char** files = NULL;
int pass;
*numFiles = 0;
int dirLen = strlen(directory);
dir = opendir(directory);
if (dir == NULL) {
ui_print("不能打开目录.\n");
return NULL;
}
int extension_length = 0;
if (fileExtensionOrDirectory != NULL)
extension_length = strlen(fileExtensionOrDirectory);
int isCounting = 1;
i = 0;
for (pass = 0; pass < 2; pass++) {
while ((de=readdir(dir)) != NULL) {
// skip hidden files
if (de->d_name[0] == '.')
continue;
// NULL means that we are gathering directories, so skip this
if (fileExtensionOrDirectory != NULL)
{
// make sure that we can have the desired extension (prevent seg fault)
if (strlen(de->d_name) < extension_length)
continue;
// compare the extension
if (strcmp(de->d_name + strlen(de->d_name) - extension_length, fileExtensionOrDirectory) != 0)
continue;
}
else
{
struct stat info;
char fullFileName[PATH_MAX];
strcpy(fullFileName, directory);
strcat(fullFileName, de->d_name);
stat(fullFileName, &info);
// make sure it is a directory
if (!(S_ISDIR(info.st_mode)))
continue;
}
if (pass == 0)
{
total++;
continue;
}
files[i] = (char*) malloc(dirLen + strlen(de->d_name) + 2);
strcpy(files[i], directory);
strcat(files[i], de->d_name);
if (fileExtensionOrDirectory == NULL)
strcat(files[i], "/");
i++;
}
if (pass == 1)
break;
if (total == 0)
break;
rewinddir(dir);
*numFiles = total;
files = (char**) malloc((total+1)*sizeof(char*));
files[total]=NULL;
}
if(closedir(dir) < 0) {
LOGE("Failed to close directory.");
}
if (total==0) {
return NULL;
}
// sort the result
if (files != NULL) {
for (i = 0; i < total; i++) {
int curMax = -1;
int j;
for (j = 0; j < total - i; j++) {
if (curMax == -1 || strcmp(files[curMax], files[j]) < 0)
curMax = j;
}
char* temp = files[curMax];
files[curMax] = files[total - i - 1];
files[total - i - 1] = temp;
}
}
return files;
}
// pass in NULL for fileExtensionOrDirectory and you will get a directory chooser
char* choose_file_menu(const char* directory, const char* fileExtensionOrDirectory, const char* headers[])
{
char path[PATH_MAX] = "";
DIR *dir;
struct dirent *de;
int numFiles = 0;
int numDirs = 0;
int i;
char* return_value = NULL;
int dir_len = strlen(directory);
char** files = gather_files(directory, fileExtensionOrDirectory, &numFiles);
char** dirs = NULL;
if (fileExtensionOrDirectory != NULL)
dirs = gather_files(directory, NULL, &numDirs);
int total = numDirs + numFiles;
if (total == 0)
{
ui_print("没有找到文件.\n");
}
else
{
char** list = (char**) malloc((total + 1) * sizeof(char*));
list[total] = NULL;
for (i = 0 ; i < numDirs; i++)
{
list[i] = strdup(dirs[i] + dir_len);
}
for (i = 0 ; i < numFiles; i++)
{
list[numDirs + i] = strdup(files[i] + dir_len);
}
for (;;)
{
int chosen_item = get_menu_selection(headers, list, 0, 0);
if (chosen_item == GO_BACK)
break;
static char ret[PATH_MAX];
if (chosen_item < numDirs)
{
char* subret = choose_file_menu(dirs[chosen_item], fileExtensionOrDirectory, headers);
if (subret != NULL)
{
strcpy(ret, subret);
return_value = ret;
break;
}
continue;
}
strcpy(ret, files[chosen_item - numDirs]);
return_value = ret;
break;
}
free_string_array(list);
}
free_string_array(files);
free_string_array(dirs);
return return_value;
}
void gbkutf(char *gbkk)
{ str_normalize_init();
// char *gbk;
uint32_t gbk_len = strlen(gbkk);
uint32_t utf8buffer_len = gbk_len * 3 + 1;
char *utf8buffer = (char *)malloc(utf8buffer_len);
memset(utf8buffer, 0, utf8buffer_len);
gbk_to_utf8(gbkk, gbk_len, &utf8buffer, &utf8buffer_len);
strcpy(gbkk, utf8buffer);
free(utf8buffer);
// return *utf8buffer;
}
以上即是列表目录代码，语言是在ARM上编译，读中文目录和文件名出乱码（即显示？？号）。我编了一个转码函数gbkutf（char *gbk），加在files[i] = (char*) malloc(dirLen + strlen(de->d_name) + 2);
strcpy(files[i], directory);
strcat(files[i], de->d_name);------》strcat(files[i], gbkutf（de->d_name)）;------》运行后，选择菜单（列目录），一闪跳出。加在其它地方不起作用，仍然显示（？？）。
[ 本帖最后由 pyf_3721 于 2013-3-16 12:45 编辑 ]
