Filter iOS log to show original file location for ts files

Author: Tsvetan Raikov

lib/services/ios-log-filter.ts

@@ -1,6 +1,12 @@
+var sourcemap = require("source-map");
+import * as path from "path";
+
 export class IOSLogFilter implements Mobile.IPlatformLogFilter {
 
-	constructor(private $loggingLevels: Mobile.ILoggingLevels) { }
+	constructor(
+		private $fs: IFileSystem,
+		private $projectData: IProjectData,
+		private $loggingLevels: Mobile.ILoggingLevels) { }
 
 	public filterData(data: string, logLevel: string, pid?: string): string {
 
@@ -23,12 +29,40 @@ export class IOSLogFilter implements Mobile.IPlatformLogFilter {
 				let pidIndex = data.indexOf(searchString);
 				if (pidIndex > 0) {
 					data = data.substring(pidIndex + searchString.length, data.length);
+					data = this.getOriginalFileLocation(data);
 				}
 			}
 			return data.trim();
 		}
 
 		return data;
 	}
+
+	private getOriginalFileLocation(data: string): string {
+		let fileString = "file:///";
+		let fileIndex = data.indexOf(fileString);
+		if (fileIndex >= 0) {
+			let parts = data.substring(fileIndex + fileString.length).split(":");
+			if (parts.length >= 4) {
+				let file = parts[0];
+				let sourceMapFile = path.join(this.$projectData.projectDir, file + ".map");
+				let row = parseInt(parts[1]);
+				let column = parseInt(parts[2]);
+				if (this.$fs.exists(sourceMapFile).wait()) {
+					let sourceMap = this.$fs.readText(sourceMapFile, "utf8").wait();
+					let smc = new sourcemap.SourceMapConsumer(sourceMap);
+					let originalPosition = smc.originalPositionFor({line:row,column:column})
+					data = data.substring(0, fileIndex + fileString.length)
+						+ file.replace(".js", ".ts") + ":" 
+						+ originalPosition.line + ":" 
+						+ originalPosition.column;
+					for (let i = 3; i<parts.length; i++) {
+						data += ":" + parts[i];
+					}
+				}
+			}
+		}
+		return data;
+	}
 }
 $injector.register("iOSLogFilter", IOSLogFilter);

package.json

@@ -68,6 +68,7 @@
     "ref-struct": "https://github.com/telerik/ref-struct/tarball/v1.0.2.3",
     "semver": "5.0.1",
     "shelljs": "0.5.3",
+    "source-map": "0.5.6",
     "tabtab": "https://github.com/Icenium/node-tabtab/tarball/master",
     "temp": "0.8.3",
     "utf-8-validate": "https://github.com/telerik/utf-8-validate/tarball/v1.0.1.3",