Handle absence of NSJSONSerialization gracefully

ddrccw · May 31, 2013 · 12fd8ab · 12fd8ab
1 parent 017ef21
commit 12fd8ab
Showing 1 changed file with 21 additions and 17 deletions.
diff --git a/ddcli/DDGetoptLongParser.m b/ddcli/DDGetoptLongParser.m
@@ -170,23 +170,27 @@ - (NSArray *) parseOptions
     NSArray * arguments = [processInfo arguments];
 
     if (mArgumentsFilename != nil) {
-        NSFileManager *fm = [NSFileManager defaultManager];
-        NSString *argumentsFilePath = [[fm currentDirectoryPath] stringByAppendingPathComponent:mArgumentsFilename];
-        if ([fm fileExistsAtPath:argumentsFilePath]) {
-            NSError *error;
-            NSArray *argumentsFromFile = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfFile:argumentsFilePath] options:0 error:&error];
-            if (argumentsFromFile != nil) {
-                NSAssert([arguments count] > 0, @"Process has no arguments (not even the command). Weird.");
-                NSString *command = [arguments objectAtIndex:0];
-                arguments = [arguments subarrayWithRange:NSMakeRange(1, [arguments count] - 1)];
-
-                NSMutableArray *mutableArguments = [NSMutableArray arrayWithObject:command];
-                [mutableArguments addObjectsFromArray:argumentsFromFile];
-                [mutableArguments addObjectsFromArray:arguments];
-                arguments = [NSArray arrayWithArray:mutableArguments];
-            } else {
-                fprintf(stderr, "Error reading %s: %s\n", [mArgumentsFilename UTF8String], [[error localizedDescription] UTF8String]);
-                exit(1);
+        if (NSClassFromString(@"NSJSONSerialization") == nil) {
+            fprintf(stderr, "Warning: ignoring %s, feature supported from OS X 10.7 onwards\n", [mArgumentsFilename UTF8String]);
+        } else {
+            NSFileManager *fm = [NSFileManager defaultManager];
+            NSString *argumentsFilePath = [[fm currentDirectoryPath] stringByAppendingPathComponent:mArgumentsFilename];
+            if ([fm fileExistsAtPath:argumentsFilePath]) {
+                NSError *error;
+                NSArray *argumentsFromFile = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfFile:argumentsFilePath] options:0 error:&error];
+                if (argumentsFromFile != nil) {
+                    NSAssert([arguments count] > 0, @"Process has no arguments (not even the command). Weird.");
+                    NSString *command = [arguments objectAtIndex:0];
+                    arguments = [arguments subarrayWithRange:NSMakeRange(1, [arguments count] - 1)];
+
+                    NSMutableArray *mutableArguments = [NSMutableArray arrayWithObject:command];
+                    [mutableArguments addObjectsFromArray:argumentsFromFile];
+                    [mutableArguments addObjectsFromArray:arguments];
+                    arguments = [NSArray arrayWithArray:mutableArguments];
+                } else {
+                    fprintf(stderr, "Error reading %s: %s\n", [mArgumentsFilename UTF8String], [[error localizedDescription] UTF8String]);
+                    exit(1);
+                }
             }
         }
     }