Refactored http communications to be more abstract and OOP

Limelight/Network/AppListResponse.m

@@ -0,0 +1,106 @@
+//
+//  AppListResponse.m
+//  Limelight
+//
+//  Created by Diego Waxemberg on 2/1/15.
+//  Copyright (c) 2015 Limelight Stream. All rights reserved.
+//
+
+#import "AppListResponse.h"
+#import "App.h"
+#import <libxml2/libxml/xmlreader.h>
+
+@implementation AppListResponse {
+    NSMutableArray* _appList;
+}
+@synthesize data, statusCode, statusMessage;
+
+static const char* TAG_APP = "App";
+static const char* TAG_APP_TITLE = "AppTitle";
+static const char* TAG_APP_ID = "ID";
+static const char* TAG_APP_IS_RUNNING = "IsRunning";
+
+- (void)populateWithData:(NSData *)xml {
+    self.data = xml;
+    _appList = [[NSMutableArray alloc] init];
+    [self parseData];
+}
+
+- (void) parseData {
+    xmlDocPtr docPtr = xmlParseMemory([self.data bytes], (int)[self.data length]);
+    if (docPtr == NULL) {
+        NSLog(@"ERROR: An error occured trying to parse xml.");
+        return;
+    }
+    
+    xmlNodePtr node = xmlDocGetRootElement(docPtr);
+    if (node == NULL) {
+        NSLog(@"ERROR: No root XML element.");
+        xmlFreeDoc(docPtr);
+        return;
+    }
+    
+    xmlChar* statusStr = xmlGetProp(node, (const xmlChar*)[TAG_STATUS_CODE UTF8String]);
+    if (statusStr != NULL) {
+        int status = [[NSString stringWithUTF8String:(const char*)statusStr] intValue];
+        xmlFree(statusStr);
+        self.statusCode = status;
+    }
+    
+    xmlChar* statusMsgXml = xmlGetProp(node, (const xmlChar*)[TAG_STATUS_MESSAGE UTF8String]);
+    NSString* statusMsg;
+    if (statusMsgXml != NULL) {
+        statusMsg = [NSString stringWithUTF8String:(const char*)statusMsgXml];
+        xmlFree(statusMsgXml);
+    }
+    else {
+        statusMsg = @"Server Error";
+    }
+    self.statusMessage = statusMsg;
+    
+    node = node->children;
+    
+    while (node != NULL) {
+        //NSLog(@"node: %s", node->name);
+        if (!xmlStrcmp(node->name, (xmlChar*)TAG_APP)) {
+            xmlNodePtr appInfoNode = node->xmlChildrenNode;
+            NSString* appName;
+            NSString* appId;
+            BOOL appIsRunning = NO;
+            while (appInfoNode != NULL) {
+                if (!xmlStrcmp(appInfoNode->name, (xmlChar*)TAG_APP_TITLE)) {
+                    xmlChar* nodeVal = xmlNodeListGetString(docPtr, appInfoNode->xmlChildrenNode, 1);
+                    appName = [[NSString alloc] initWithCString:(const char*)nodeVal encoding:NSUTF8StringEncoding];
+                    xmlFree(nodeVal);
+                } else if (!xmlStrcmp(appInfoNode->name, (xmlChar*)TAG_APP_ID)) {
+                    xmlChar* nodeVal = xmlNodeListGetString(docPtr, appInfoNode->xmlChildrenNode, 1);
+                    appId = [[NSString alloc] initWithCString:(const char*)nodeVal encoding:NSUTF8StringEncoding];
+                    xmlFree(nodeVal);
+                } else if (!xmlStrcmp(appInfoNode->name, (xmlChar*)TAG_APP_IS_RUNNING)) {
+                    xmlChar* nodeVal = xmlNodeListGetString(docPtr, appInfoNode->xmlChildrenNode, 1);
+                    appIsRunning = [[[NSString alloc] initWithCString:(const char*)nodeVal encoding:NSUTF8StringEncoding] isEqualToString:@"1"];
+                    xmlFree(nodeVal);
+                }
+                appInfoNode = appInfoNode->next;
+            }
+            App* app = [[App alloc] init];
+            app.appName = appName;
+            app.appId = appId;
+            app.isRunning = appIsRunning;
+            [_appList addObject:app];
+        }
+        node = node->next;
+    }
+    
+    xmlFreeDoc(docPtr);
+}
+
+- (NSArray*) getAppList {
+    return _appList;
+}
+
+- (BOOL) isStatusOk {
+    return self.statusCode == 200;
+}
+
+@end