Added more fs utils

src/utils/fs.c

@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <string.h>
 #include <strings.h>
 
@@ -7,39 +8,50 @@
 #include "utils.h"
 
 
+char *strip_sd_prefix (char *path) {
+    const char *prefix = "sd:/";
+
+    char *found = strstr(path, prefix);
+    if (found) {
+        return found + strlen(prefix);
+    }
+
+    return path;
+}
+
+
 bool file_exists (char *path) {
     FRESULT fr;
     FILINFO fno;
 
-    fr = f_stat(path, &fno);
+    fr = f_stat(strip_sd_prefix(path), &fno);
 
-    return (fr == FR_OK);
+    return ((fr == FR_OK) && (!(fno.fattrib & AM_DIR)));
 }
 
-bool directory_exists (char *path) {
-    FRESULT fr;
-    FILINFO fno;
-
-    fr = f_stat(path, &fno);
-
-    return ((fr == FR_OK) && (fno.fattrib & AM_DIR));
-}
 
 size_t file_get_size (char *path) {
     FILINFO fno;
 
-    if (f_stat(path, &fno) != FR_OK) {
+    if (f_stat(strip_sd_prefix(path), &fno) != FR_OK) {
         return 0;
     }
 
     return (size_t) (fno.fsize);
 }
 
+bool file_delete (char *path) {
+    if (file_exists(path)) {
+        return (f_unlink(strip_sd_prefix(path)) != FR_OK);
+    }
+    return false;
+}
+
 bool file_allocate (char *path, size_t size) {
     FIL fil;
     bool error = false;
 
-    if (f_open(&fil, path, FA_WRITE | FA_CREATE_NEW) != FR_OK) {
+    if (f_open(&fil, strip_sd_prefix(path), FA_WRITE | FA_CREATE_NEW) != FR_OK) {
         return true;
     }
 
@@ -67,7 +79,7 @@ bool file_get_sectors (char *path, uint32_t *sectors, size_t entries) {
         sectors[i] = 0;
     }
 
-    if (f_open(&fil, path, FA_READ) != FR_OK) {
+    if (f_open(&fil, strip_sd_prefix(path), FA_READ) != FR_OK) {
         return true;
     }
 
@@ -117,3 +129,55 @@ bool file_has_extensions (char *path, const char *extensions[]) {
 
     return false;
 }
+
+
+bool directory_exists (char *path) {
+    FRESULT fr;
+    FILINFO fno;
+
+    fr = f_stat(strip_sd_prefix(path), &fno);
+
+    return ((fr == FR_OK) && (fno.fattrib & AM_DIR));
+}
+
+bool directory_delete (char *path) {
+    if (directory_exists(path)) {
+        return (f_unlink(strip_sd_prefix(path)) != FR_OK);
+    }
+
+    return false;
+}
+
+bool directory_create (char *path) {
+    bool error = false;
+
+    if (directory_exists(path)) {
+        return false;
+    }
+
+    char *directory = strdup(strip_sd_prefix(path));
+    char *separator = directory;
+
+    do {
+        separator = strchr(separator, '/');
+
+        if (separator != NULL) {
+            *separator++ = '\0';
+        }
+
+        if ((strlen(directory) > 0) && (!directory_exists(directory))) {
+            if (f_mkdir(directory) != FR_OK) {
+                error = true;
+                break;
+            }
+        }
+
+        if (separator != NULL) {
+            *(separator - 1) = '/';
+        }
+    } while (separator != NULL);
+
+    free(directory);
+
+    return error;
+}

src/utils/fs.h

@@ -10,12 +10,18 @@
 #define FS_SECTOR_SIZE      (512)
 
 
+char *strip_sd_prefix (char *path);
+
 bool file_exists (char *path);
-bool directory_exists (char *path);
 size_t file_get_size (char *path);
+bool file_delete (char *path);
 bool file_allocate (char *path, size_t size);
 bool file_get_sectors (char *path, uint32_t *sectors, size_t entries);
 bool file_has_extensions (char *path, const char *extensions[]);
 
+bool directory_exists (char *path);
+bool directory_delete (char *path);
+bool directory_create (char *path);
+
 
 #endif