Compiler flag to specify line ending microsoft#1693

Author: kmashint

src/compiler/commandLineParser.ts

@@ -57,6 +57,13 @@ module ts {
             paramType: Diagnostics.KIND,
             error: Diagnostics.Argument_for_module_option_must_be_commonjs_amd_or_umd
         },
+        {
+            name: "newLine",
+            type: { "crlf": NewLineKind.CRLF, "lf": NewLineKind.LF },
+			description: Diagnostics.Emit_newline_Colon_CRLF_dos_or_LF_unix,
+            paramType: Diagnostics.NEWLINE,
+			error: Diagnostics.Argument_for_newLine_option_must_be_CRLF_or_LF
+        },
         {
             name: "noEmit",
             type: "boolean",

src/compiler/diagnosticInformationMap.generated.ts

@@ -499,6 +499,9 @@ module ts {
         Preserve_new_lines_when_emitting_code: { code: 6057, category: DiagnosticCategory.Message, key: "Preserve new-lines when emitting code." },
         Specifies_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir: { code: 6058, category: DiagnosticCategory.Message, key: "Specifies the root directory of input files. Use to control the output directory structure with --outDir." },
         File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files: { code: 6059, category: DiagnosticCategory.Error, key: "File '{0}' is not under 'rootDir' '{1}'. 'rootDir' is expected to contain all source files." },
+        Emit_newline_Colon_CRLF_dos_or_LF_unix: { code: 6061, category: DiagnosticCategory.Message, key: "Emit newline: 'CRLF' (dos) or 'LF' (unix)." },
+        NEWLINE: { code: 6062, category: DiagnosticCategory.Message, key: "NEWLINE" },
+        Argument_for_newLine_option_must_be_CRLF_or_LF: { code: 6063, category: DiagnosticCategory.Error, key: "Argument for --newLine option must be 'CRLF' or 'LF'." },
         Variable_0_implicitly_has_an_1_type: { code: 7005, category: DiagnosticCategory.Error, key: "Variable '{0}' implicitly has an '{1}' type." },
         Parameter_0_implicitly_has_an_1_type: { code: 7006, category: DiagnosticCategory.Error, key: "Parameter '{0}' implicitly has an '{1}' type." },
         Member_0_implicitly_has_an_1_type: { code: 7008, category: DiagnosticCategory.Error, key: "Member '{0}' implicitly has an '{1}' type." },

src/compiler/diagnosticMessages.json

@@ -1984,6 +1984,18 @@
         "category": "Error",
         "code": 6059
     },
+    "Emit newline: 'CRLF' (dos) or 'LF' (unix).": {
+		"category": "Message",
+		"code": 6061
+	},
+    "NEWLINE": { 
+		"category": "Message", 
+		"code": 6062
+	},
+    "Argument for --newLine option must be 'CRLF' or 'LF'.": {
+		"category": "Error", 
+		"code": 6063
+	},
 
 
     "Variable '{0}' implicitly has an '{1}' type.": {

src/compiler/program.ts

@@ -91,14 +91,16 @@ module ts {
             }
         }
 
+		let newLine = [sys.newLine, "\r\n", "\n"][options.newLine ? Number(options.newLine) : 0];
+		
         return {
             getSourceFile,
             getDefaultLibFileName: options => combinePaths(getDirectoryPath(normalizePath(sys.getExecutingFilePath())), getDefaultLibFileName(options)),
             writeFile,
             getCurrentDirectory: () => currentDirectory || (currentDirectory = sys.getCurrentDirectory()),
             useCaseSensitiveFileNames: () => sys.useCaseSensitiveFileNames,
             getCanonicalFileName,
-            getNewLine: () => sys.newLine
+            getNewLine: () => newLine
         };
     }
 

src/compiler/types.ts

@@ -1650,6 +1650,7 @@ module ts {
         locale?: string;
         mapRoot?: string;
         module?: ModuleKind;
+		newLine?: string;
         noEmit?: boolean;
         noEmitOnError?: boolean;
         noErrorTruncation?: boolean;
@@ -1681,6 +1682,12 @@ module ts {
         UMD = 3,
     }
 
+    export const enum NewLineKind {
+        DEFAULT = 0,
+		CRLF = 1,
+        LF = 2,
+    }
+	
     export interface LineAndCharacter {
         line: number;
         /*