Changeset 159934 in webkit for trunk/Source/JavaScriptCore/jsc.cpp

Timestamp:

Dec 2, 2013, 8:38:58 AM (11 years ago)

Author:

[email protected]

Message:

jsc: implement a native readFile function
​https://bugs.webkit.org/show_bug.cgi?id=125059

Patch by Brian J. Burg <Brian Burg> on 2013-12-02
Reviewed by Filip Pizlo.

This adds a native readFile() function to jsc, used to slurp
an entire file into a JavaScript string.

• jsc.cpp:

(GlobalObject::finishCreation): Add readFile() to globals.
(functionReadFile): Added.

File:

• trunk/Source/JavaScriptCore/jsc.cpp (modified) (3 diffs)

trunk/Source/JavaScriptCore/jsc.cpp

@@ -109 +109 @@
 static EncodedJSValue JSC_HOST_CALL functionRun(ExecState*);
 static EncodedJSValue JSC_HOST_CALL functionLoad(ExecState*);
+static EncodedJSValue JSC_HOST_CALL functionReadFile(ExecState*);
 static EncodedJSValue JSC_HOST_CALL functionCheckSyntax(ExecState*);
 static EncodedJSValue JSC_HOST_CALL functionReadline(ExecState*);
@@ -227 +228 @@
         addFunction(vm, "run", functionRun, 1);
         addFunction(vm, "load", functionLoad, 1);
+        addFunction(vm, "readFile", functionReadFile, 1);
         addFunction(vm, "checkSyntax", functionCheckSyntax, 1);
         addFunction(vm, "jscStack", functionJSCStack, 1);
@@ -420 +422 @@
         exec->vm().throwException(exec, evaluationException);
     return JSValue::encode(result);
+}
+
+EncodedJSValue JSC_HOST_CALL functionReadFile(ExecState* exec)
+{
+    String fileName = exec->argument(0).toString(exec)->value(exec);
+    Vector<char> script;
+    if (!fillBufferWithContentsOfFile(fileName, script))
+        return JSValue::encode(exec->vm().throwException(exec, createError(exec, "Could not open file.")));
+
+    return JSValue::encode(jsString(exec, stringFromUTF(script.data())));
 }