Author: [email protected]
Date: Fri Apr 17 14:04:34 2009
New Revision: 1741
Modified:
branches/bleeding_edge/samples/shell.cc
branches/bleeding_edge/src/d8.cc
branches/bleeding_edge/src/d8.h
Log:
Add a "read" extension to the shell programs. This global function
reads the contents of a file into a string and returns it.
Review URL: http://codereview.chromium.org/67262
Modified: branches/bleeding_edge/samples/shell.cc
==============================================================================
--- branches/bleeding_edge/samples/shell.cc (original)
+++ branches/bleeding_edge/samples/shell.cc Fri Apr 17 14:04:34 2009
@@ -38,6 +38,7 @@
bool print_result,
bool report_exceptions);
v8::Handle<v8::Value> Print(const v8::Arguments& args);
+v8::Handle<v8::Value> Read(const v8::Arguments& args);
v8::Handle<v8::Value> Load(const v8::Arguments& args);
v8::Handle<v8::Value> Quit(const v8::Arguments& args);
v8::Handle<v8::Value> Version(const v8::Arguments& args);
@@ -52,6 +53,8 @@
v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
// Bind the global 'print' function to the C++ Print callback.
global->Set(v8::String::New("print"), v8::FunctionTemplate::New(Print));
+ // Bind the global 'read' function to the C++ Read callback.
+ global->Set(v8::String::New("read"), v8::FunctionTemplate::New(Read));
// Bind the global 'load' function to the C++ Load callback.
global->Set(v8::String::New("load"), v8::FunctionTemplate::New(Load));
// Bind the 'quit' function
@@ -132,6 +135,25 @@
printf("\n");
fflush(stdout);
return v8::Undefined();
+}
+
+
+// The callback that is invoked by v8 whenever the JavaScript 'read'
+// function is called. This function loads the content of the file named
in
+// the argument into a JavaScript string.
+v8::Handle<v8::Value> Read(const v8::Arguments& args) {
+ if (args.Length() != 1) {
+ return v8::ThrowException(v8::String::New("Bad parameters"));
+ }
+ v8::String::Utf8Value file(args[0]);
+ if (*file == NULL) {
+ return v8::ThrowException(v8::String::New("Error loading file"));
+ }
+ v8::Handle<v8::String> source = ReadFile(*file);
+ if (source.IsEmpty()) {
+ return v8::ThrowException(v8::String::New("Error loading file"));
+ }
+ return source;
}
Modified: branches/bleeding_edge/src/d8.cc
==============================================================================
--- branches/bleeding_edge/src/d8.cc (original)
+++ branches/bleeding_edge/src/d8.cc Fri Apr 17 14:04:34 2009
@@ -163,6 +163,22 @@
}
+Handle<Value> Shell::Read(const Arguments& args) {
+ if (args.Length() != 1) {
+ return ThrowException(String::New("Bad parameters"));
+ }
+ String::Utf8Value file(args[0]);
+ if (*file == NULL) {
+ return ThrowException(String::New("Error loading file"));
+ }
+ Handle<String> source = ReadFile(*file);
+ if (source.IsEmpty()) {
+ return ThrowException(String::New("Error loading file"));
+ }
+ return source;
+}
+
+
Handle<Value> Shell::Load(const Arguments& args) {
for (int i = 0; i < args.Length(); i++) {
HandleScope handle_scope;
@@ -381,6 +397,7 @@
HandleScope scope;
Handle<ObjectTemplate> global_template = ObjectTemplate::New();
global_template->Set(String::New("print"), FunctionTemplate::New(Print));
+ global_template->Set(String::New("read"), FunctionTemplate::New(Read));
global_template->Set(String::New("load"), FunctionTemplate::New(Load));
global_template->Set(String::New("quit"), FunctionTemplate::New(Quit));
global_template->Set(String::New("version"),
FunctionTemplate::New(Version));
@@ -555,6 +572,8 @@
Handle<ObjectTemplate> global_template = ObjectTemplate::New();
global_template->Set(String::New("print"),
FunctionTemplate::New(Shell::Print));
+ global_template->Set(String::New("read"),
+ FunctionTemplate::New(Shell::Read));
global_template->Set(String::New("load"),
FunctionTemplate::New(Shell::Load));
global_template->Set(String::New("yield"),
Modified: branches/bleeding_edge/src/d8.h
==============================================================================
--- branches/bleeding_edge/src/d8.h (original)
+++ branches/bleeding_edge/src/d8.h Fri Apr 17 14:04:34 2009
@@ -139,6 +139,7 @@
static Handle<Value> Yield(const Arguments& args);
static Handle<Value> Quit(const Arguments& args);
static Handle<Value> Version(const Arguments& args);
+ static Handle<Value> Read(const Arguments& args);
static Handle<Value> Load(const Arguments& args);
// The OS object on the global object contains methods for performing
// operating system calls:
--~--~---------~--~----~------------~-------~--~----~
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