Disk: add --disk-use-available

fix #543

src/modules/disk/disk.c

@@ -166,7 +166,7 @@ static void printAutodetected(FFDiskOptions* options, const FFlist* disks)
 void ffPrintDisk(FFDiskOptions* options)
 {
     FF_LIST_AUTO_DESTROY disks = ffListCreate(sizeof (FFDisk));
-    const char* error = ffDetectDisks(&disks);
+    const char* error = ffDetectDisks(options, &disks);
 
     if(error)
     {
@@ -195,6 +195,7 @@ void ffInitDiskOptions(FFDiskOptions* options)
 
     ffStrbufInit(&options->folders);
     options->showTypes = FF_DISK_VOLUME_TYPE_REGULAR_BIT | FF_DISK_VOLUME_TYPE_EXTERNAL_BIT;
+    options->calcType = FF_DISK_CALC_TYPE_FREE;
 }
 
 bool ffParseDiskCommandOptions(FFDiskOptions* options, const char* key, const char* value)
@@ -255,6 +256,15 @@ bool ffParseDiskCommandOptions(FFDiskOptions* options, const char* key, const ch
         return true;
     }
 
+    if (ffStrEqualsIgnCase(subKey, "use-available"))
+    {
+        if (ffOptionParseBoolean(value))
+            options->calcType = FF_DISK_CALC_TYPE_AVAILABLE;
+        else
+            options->calcType = FF_DISK_CALC_TYPE_FREE;
+        return true;
+    }
+
     return false;
 }
 
@@ -318,6 +328,15 @@ void ffParseDiskJsonObject(FFDiskOptions* options, yyjson_val* module)
             continue;
         }
 
+        if (ffStrEqualsIgnCase(key, "useAvailable"))
+        {
+            if (yyjson_get_bool(val))
+                options->calcType = FF_DISK_CALC_TYPE_AVAILABLE;
+            else
+                options->calcType = FF_DISK_CALC_TYPE_FREE;
+            continue;
+        }
+
         ffPrintError(FF_DISK_MODULE_NAME, 0, &options->moduleArgs, "Unknown JSON key %s", key);
     }
 }

src/modules/disk/option.h

@@ -14,6 +14,12 @@ typedef enum FFDiskVolumeType
     FF_DISK_VOLUME_TYPE_UNKNOWN_BIT = 1 << 4,
 } FFDiskVolumeType;
 
+typedef enum FFDiskCalcType
+{
+    FF_DISK_CALC_TYPE_FREE,
+    FF_DISK_CALC_TYPE_AVAILABLE,
+} FFDiskCalcType;
+
 typedef struct FFDiskOptions
 {
     FFModuleBaseInfo moduleInfo;
@@ -21,4 +27,5 @@ typedef struct FFDiskOptions
 
     FFstrbuf folders;
     FFDiskVolumeType showTypes;
+    FFDiskCalcType calcType;
 } FFDiskOptions;