74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#include "FileUtils.h"
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#include "TactilityCore.h"
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#include <cstdlib>
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#include <cstring>
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namespace tt::app::files {
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#define TAG "file_utils"
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#define SCANDIR_LIMIT 128
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int dirent_filter_dot_entries(const struct dirent* entry) {
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return (strcmp(entry->d_name, "..") == 0 || strcmp(entry->d_name, ".") == 0) ? -1 : 0;
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}
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int dirent_sort_alpha_and_type(const struct dirent** left, const struct dirent** right) {
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bool left_is_dir = (*left)->d_type == TT_DT_DIR || (*left)->d_type == TT_DT_CHR;
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bool right_is_dir = (*right)->d_type == TT_DT_DIR || (*right)->d_type == TT_DT_CHR;
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if (left_is_dir == right_is_dir) {
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return strcmp((*left)->d_name, (*right)->d_name);
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} else {
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return (left_is_dir < right_is_dir) ? 1 : -1;
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}
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}
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int dirent_sort_alpha(const struct dirent** left, const struct dirent** right) {
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return strcmp((*left)->d_name, (*right)->d_name);
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}
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int scandir(
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const char* path,
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struct dirent*** output,
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ScandirFilter _Nullable filter,
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ScandirSort _Nullable sort
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) {
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DIR* dir = opendir(path);
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if (dir == nullptr) {
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TT_LOG_E(TAG, "Failed to open dir %s", path);
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return -1;
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}
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*output = static_cast<dirent**>(malloc(sizeof(void*) * SCANDIR_LIMIT));
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struct dirent** dirent_array = *output;
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int dirent_buffer_index = 0;
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struct dirent* current_entry;
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while ((current_entry = readdir(dir)) != nullptr) {
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if (filter(current_entry) == 0) {
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dirent_array[dirent_buffer_index] = static_cast<dirent*>(malloc(sizeof(struct dirent)));
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memcpy(dirent_array[dirent_buffer_index], current_entry, sizeof(struct dirent));
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dirent_buffer_index++;
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if (dirent_buffer_index >= SCANDIR_LIMIT) {
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TT_LOG_E(TAG, "Directory has more than %d files", SCANDIR_LIMIT);
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break;
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}
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}
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}
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if (dirent_buffer_index == 0) {
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free(*output);
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*output = nullptr;
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} else {
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if (sort) {
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qsort(dirent_array, dirent_buffer_index, sizeof(struct dirent*), (__compar_fn_t)sort);
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}
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}
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closedir(dir);
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return dirent_buffer_index;
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};
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}
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