Remove helpindex now that it is generated during build. Add a bit to the help about...

[enjoyable.git] / NJMapping.m

diff --git a/NJMapping.m b/NJMapping.m
index a5f810c..8cc5724 100644 (file)
--- a/NJMapping.m
+++ b/NJMapping.m
@@ -8,6 +8,7 @@
 #import "NJMapping.h"
 
 #import "NJInput.h"
+#import "NJOutput.h"
 
 @implementation NJMapping
 
@@ -19,14 +20,14 @@
     return self;
 }
 
-- (Target *)objectForKeyedSubscript:(NJInput *)input {
+- (NJOutput *)objectForKeyedSubscript:(NJInput *)input {
     return input ? _entries[input.uid] : nil;
 }
 
-- (void)setObject:(Target *)target forKeyedSubscript:(NJInput *)input {
+- (void)setObject:(NJOutput *)output forKeyedSubscript:(NJInput *)input {
     if (input) {
-        if (target)
-            _entries[input.uid] = target;
+        if (output)
+            _entries[input.uid] = output;
         else
             [_entries removeObjectForKey:input.uid];
     }
@@ -42,4 +43,49 @@
     return @{ @"name": _name, @"entries": entries };
 }
 
+- (BOOL)writeToURL:(NSURL *)url error:(NSError **)error {
+    [NSProcessInfo.processInfo disableSuddenTermination];
+    NSDictionary *serialization = [self serialize];
+    NSData *json = [NSJSONSerialization dataWithJSONObject:serialization
+                                                   options:NSJSONWritingPrettyPrinted
+                                                     error:error];
+    BOOL success = json && [json writeToURL:url options:NSDataWritingAtomic error:error];
+    [NSProcessInfo.processInfo enableSuddenTermination];
+    return success;
+}
+
++ (id)mappingWithContentsOfURL:(NSURL *)url mappings:(NSArray *)mappings error:(NSError **)error {
+    NSInputStream *stream = [NSInputStream inputStreamWithURL:url];
+    [stream open];
+    NSDictionary *serialization = stream && !*error
+        ? [NSJSONSerialization JSONObjectWithStream:stream options:0 error:error]
+        : nil;
+    [stream close];
+    
+    if (!serialization && error)
+        return nil;
+    
+    if (!([serialization isKindOfClass:NSDictionary.class]
+          && [serialization[@"name"] isKindOfClass:NSString.class]
+          && [serialization[@"entries"] isKindOfClass:NSDictionary.class])) {
+        *error = [NSError errorWithDomain:@"Enjoyable"
+                                     code:0
+                              description:@"This isn't a valid mapping file."];
+        return nil;
+    }
+    
+    NSDictionary *entries = serialization[@"entries"];
+    NJMapping *mapping = [[NJMapping alloc] initWithName:serialization[@"name"]];
+    for (id key in entries) {
+        NSDictionary *value = entries[key];
+        if ([key isKindOfClass:NSString.class]) {
+            NJOutput *output = [NJOutput outputDeserialize:value
+                                              withMappings:mappings];
+            if (output)
+                mapping.entries[key] = output;
+        }
+    }
+    return mapping;
+}
+
 @end