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atom/native/v8_extensions/native_handler.mm
Corey Johnson & Nathan Sobo c4639b894e path 💄
2012-08-27 13:30:04 -07:00

487 lines
17 KiB
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#import <Cocoa/Cocoa.h>
#import <dispatch/dispatch.h>
#import <CommonCrypto/CommonDigest.h>
#import "atom_application.h"
#import "native_handler.h"
#import "include/cef_base.h"
#import "path_watcher.h"
#import <iostream>
NSString *stringFromCefV8Value(const CefRefPtr<CefV8Value>& value) {
std::string cc_value = value->GetStringValue().ToString();
return [NSString stringWithUTF8String:cc_value.c_str()];
}
void throwException(const CefRefPtr<CefV8Value>& global, CefRefPtr<CefV8Exception> exception, NSString *message) {
CefV8ValueList arguments;
message = [message stringByAppendingFormat:@"\n%s", exception->GetMessage().ToString().c_str()];
arguments.push_back(CefV8Value::CreateString(std::string([message UTF8String], [message lengthOfBytesUsingEncoding:NSUTF8StringEncoding])));
CefRefPtr<CefV8Value> console = global->GetValue("console");
console->GetValue("error")->ExecuteFunction(console, arguments);
}
NativeHandler::NativeHandler() : CefV8Handler() {
std::string extensionCode = "var $native = {}; (function() {";
const char *functionNames[] = {"exists", "alert", "read", "write", "absolute", "list", "isFile", "isDirectory", "remove", "asyncList", "open", "openDialog", "quit", "writeToPasteboard", "readFromPasteboard", "showDevTools", "toggleDevTools", "newWindow", "saveDialog", "exit", "watchPath", "unwatchPath", "makeDirectory", "move", "moveToTrash", "reload", "lastModified", "md5ForPath", "exec", "getPlatform"};
NSUInteger arrayLength = sizeof(functionNames) / sizeof(const char *);
for (NSUInteger i = 0; i < arrayLength; i++) {
std::string functionName = std::string(functionNames[i]);
extensionCode += "native function " + functionName + "(); $native." + functionName + " = " + functionName + ";";
}
extensionCode += "})();";
// Register the extension.
CefRegisterExtension("v8/test", extensionCode, this);
}
bool NativeHandler::Execute(const CefString& name,
CefRefPtr<CefV8Value> object,
const CefV8ValueList& arguments,
CefRefPtr<CefV8Value>& retval,
CefString& exception) {
if (name == "exists") {
NSString *path = stringFromCefV8Value(arguments[0]);
bool exists = [[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:nil];
retval = CefV8Value::CreateBool(exists);
return true;
}
else if (name == "read") {
NSString *path = stringFromCefV8Value(arguments[0]);
NSError *error = nil;
NSString *contents = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
else {
retval = CefV8Value::CreateString([contents UTF8String]);
}
return true;
}
else if (name == "write") {
NSString *path = stringFromCefV8Value(arguments[0]);
NSString *content = stringFromCefV8Value(arguments[1]);
NSFileManager *fm = [NSFileManager defaultManager];
// Create parent directories if they don't exist
BOOL exists = [fm fileExistsAtPath:[path stringByDeletingLastPathComponent] isDirectory:nil];
if (!exists) {
[fm createDirectoryAtPath:[path stringByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];
}
NSError *error = nil;
BOOL success = [content writeToFile:path atomically:YES encoding:NSUTF8StringEncoding error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
else if (!success) {
std::string exception = "Cannot write to '";
exception += [path UTF8String];
exception += "'";
}
return true;
}
else if (name == "absolute") {
NSString *path = stringFromCefV8Value(arguments[0]);
path = [path stringByStandardizingPath];
if ([path characterAtIndex:0] == '/') {
retval = CefV8Value::CreateString([path UTF8String]);
}
return true;
}
else if (name == "list") {
NSString *path = stringFromCefV8Value(arguments[0]);
bool recursive = arguments[1]->GetBoolValue();
NSFileManager *fm = [NSFileManager defaultManager];
NSArray *relativePaths = nil;
NSError *error = nil;
if (recursive) {
relativePaths = [fm subpathsOfDirectoryAtPath:path error:&error];
}
else {
relativePaths = [fm contentsOfDirectoryAtPath:path error:&error];
}
if (error) {
exception = [[error localizedDescription] UTF8String];
}
else {
retval = CefV8Value::CreateArray(relativePaths.count);
for (NSUInteger i = 0; i < relativePaths.count; i++) {
NSString *relativePath = [relativePaths objectAtIndex:i];
NSString *fullPath = [path stringByAppendingPathComponent:relativePath];
retval->SetValue(i, CefV8Value::CreateString([fullPath UTF8String]));
}
}
return true;
}
else if (name == "isDirectory") {
NSString *path = stringFromCefV8Value(arguments[0]);
BOOL isDir = false;
BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&isDir];
retval = CefV8Value::CreateBool(exists && isDir);
return true;
}
else if (name == "isFile") {
NSString *path = stringFromCefV8Value(arguments[0]);
BOOL isDir = false;
BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&isDir];
retval = CefV8Value::CreateBool(exists && !isDir);
return true;
}
else if (name == "remove") {
NSString *path = stringFromCefV8Value(arguments[0]);
NSError *error = nil;
[[NSFileManager defaultManager] removeItemAtPath:path error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
return true;
}
else if (name == "asyncList") {
return false;
}
else if (name == "alert") {
NSString *message = stringFromCefV8Value(arguments[0]);
NSString *detailedMessage = stringFromCefV8Value(arguments[1]);
CefRefPtr<CefV8Value> buttonNamesAndCallbacks;
if (arguments.size() < 3) {
buttonNamesAndCallbacks = CefV8Value::CreateArray(0);
}
else {
buttonNamesAndCallbacks = arguments[2];
}
NSAlert *alert = [[[NSAlert alloc] init] autorelease];
[alert setMessageText:message];
[alert setInformativeText:detailedMessage];
for (int i = 0; i < buttonNamesAndCallbacks->GetArrayLength(); i++) {
std::string title = buttonNamesAndCallbacks->GetValue(i)->GetValue(0)->GetStringValue().ToString();
NSString *buttonTitle = [NSString stringWithUTF8String:title.c_str()];
NSButton *button = [alert addButtonWithTitle:buttonTitle];
[button setTag:i];
}
NSUInteger buttonTag = [alert runModal];
if (buttonNamesAndCallbacks->GetArrayLength() == 0) { // No button title if there were no buttons specified.
return true;
}
CefRefPtr<CefV8Value> callback = buttonNamesAndCallbacks->GetValue(buttonTag)->GetValue(1);
CefV8ValueList args;
callback->SetRethrowExceptions(true);
callback->ExecuteFunction(callback, args);
return true;
}
else if (name == "writeToPasteboard") {
NSString *text = stringFromCefV8Value(arguments[0]);
NSPasteboard *pb = [NSPasteboard generalPasteboard];
[pb declareTypes:[NSArray arrayWithObjects:NSStringPboardType, nil] owner:nil];
[pb setString:text forType:NSStringPboardType];
return true;
}
else if (name == "readFromPasteboard") {
NSPasteboard *pb = [NSPasteboard generalPasteboard];
NSArray *results = [pb readObjectsForClasses:[NSArray arrayWithObjects:[NSString class], nil] options:nil];
if (results) {
retval = CefV8Value::CreateString([[results objectAtIndex:0] UTF8String]);
}
return true;
}
else if (name == "openDialog") {
NSOpenPanel *panel = [NSOpenPanel openPanel];
[panel setCanChooseDirectories:YES];
if ([panel runModal] == NSFileHandlingPanelOKButton) {
NSURL *url = [[panel URLs] lastObject];
retval = CefV8Value::CreateString([[url path] UTF8String]);
}
else {
retval = CefV8Value::CreateNull();
}
return true;
}
else if (name == "open") {
NSString *path = stringFromCefV8Value(arguments[0]);
[NSApp open:path];
return true;
}
else if (name == "newWindow") {
[(AtomApplication *)NSApp open:nil];
return true;
}
else if (name == "saveDialog") {
NSSavePanel *panel = [NSSavePanel savePanel];
if ([panel runModal] == NSFileHandlingPanelOKButton) {
NSURL *url = [panel URL];
retval = CefV8Value::CreateString([[url path] UTF8String]);
}
else {
return CefV8Value::CreateNull();
}
return true;
}
else if (name == "quit") {
[NSApp terminate:nil];
return true;
}
else if (name == "showDevTools") {
// CefV8Context::GetCurrentContext()->GetBrowser()->ShowDevTools();
return false;
}
else if (name == "toggleDevTools") {
// [[[NSApp keyWindow] windowController] toggleDevTools];
return false;
}
else if (name == "exit") {
int exitStatus = 0;
if (arguments.size() > 0) exitStatus = arguments[0]->GetIntValue();
exit(exitStatus);
return true;
}
else if (name == "watchPath") {
NSString *path = stringFromCefV8Value(arguments[0]);
CefRefPtr<CefV8Value> function = arguments[1];
CefRefPtr<CefV8Context> context = CefV8Context::GetCurrentContext();
WatchCallback callback = ^(NSString *eventType, NSString *path) {
context->Enter();
CefV8ValueList args;
args.push_back(CefV8Value::CreateString(std::string([eventType UTF8String], [eventType lengthOfBytesUsingEncoding:NSUTF8StringEncoding])));
args.push_back(CefV8Value::CreateString(std::string([path UTF8String], [path lengthOfBytesUsingEncoding:NSUTF8StringEncoding])));
function->ExecuteFunction(function, args);
context->Exit();
};
PathWatcher *pathWatcher = [PathWatcher pathWatcherForContext:CefV8Context::GetCurrentContext()];
NSString *watchId = [pathWatcher watchPath:path callback:[[callback copy] autorelease]];
if (watchId) {
retval = CefV8Value::CreateString([watchId UTF8String]);
}
else {
exception = std::string("Failed to watch path '") + std::string([path UTF8String]) + std::string("' (it may not exist)");
}
return true;
}
else if (name == "unwatchPath") {
NSString *path = stringFromCefV8Value(arguments[0]);
NSString *callbackId = stringFromCefV8Value(arguments[1]);
NSError *error = nil;
PathWatcher *pathWatcher = [PathWatcher pathWatcherForContext:CefV8Context::GetCurrentContext()];
[pathWatcher unwatchPath:path callbackId:callbackId error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
return true;
}
else if (name == "makeDirectory") {
NSString *path = stringFromCefV8Value(arguments[0]);
NSFileManager *fm = [NSFileManager defaultManager];
NSError *error = nil;
[fm createDirectoryAtPath:path withIntermediateDirectories:NO attributes:nil error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
return true;
}
else if (name == "move") {
NSString *sourcePath = stringFromCefV8Value(arguments[0]);
NSString *targetPath = stringFromCefV8Value(arguments[1]);
NSFileManager *fm = [NSFileManager defaultManager];
NSError *error = nil;
[fm moveItemAtPath:sourcePath toPath:targetPath error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
return true;
}
else if (name == "moveToTrash") {
NSString *sourcePath = stringFromCefV8Value(arguments[0]);
bool success = [[NSWorkspace sharedWorkspace] performFileOperation:NSWorkspaceRecycleOperation
source:[sourcePath stringByDeletingLastPathComponent]
destination:@""
files:[NSArray arrayWithObject:[sourcePath lastPathComponent]]
tag:nil];
if (!success) {
std::string exception = "Can not move ";
exception += [sourcePath UTF8String];
exception += " to trash.";
}
return true;
}
else if (name == "reload") {
CefV8Context::GetCurrentContext()->GetBrowser()->ReloadIgnoreCache();
}
else if (name == "lastModified") {
NSString *path = stringFromCefV8Value(arguments[0]);
NSFileManager *fm = [NSFileManager defaultManager];
NSError *error = nil;
NSDictionary *attributes = [fm attributesOfItemAtPath:path error:&error];
if (error) {
exception = [[error localizedDescription] UTF8String];
}
NSDate *lastModified = [attributes objectForKey:NSFileModificationDate];
retval = CefV8Value::CreateDate(CefTime([lastModified timeIntervalSince1970]));
return true;
}
else if (name == "md5ForPath") {
NSString *path = stringFromCefV8Value(arguments[0]);
unsigned char outputData[CC_MD5_DIGEST_LENGTH];
NSData *inputData = [[NSData alloc] initWithContentsOfFile:path];
CC_MD5([inputData bytes], [inputData length], outputData);
[inputData release];
NSMutableString *hash = [[NSMutableString alloc] init];
for (NSUInteger i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
[hash appendFormat:@"%02x", outputData[i]];
}
retval = CefV8Value::CreateString([hash UTF8String]);
return true;
}
else if (name == "exec") {
NSString *command = stringFromCefV8Value(arguments[0]);
CefRefPtr<CefV8Value> options = arguments[1];
CefRefPtr<CefV8Value> callback = arguments[2];
NSTask *task = [[NSTask alloc] init];
[task setLaunchPath:@"/bin/sh"];
[task setStandardInput:[NSFileHandle fileHandleWithNullDevice]];
[task setArguments:[NSArray arrayWithObjects:@"-l", @"-c", command, nil]];
NSPipe *stdout = [NSPipe pipe];
NSPipe *stderr = [NSPipe pipe];
[task setStandardOutput:stdout];
[task setStandardError:stderr];
CefRefPtr<CefV8Context> context = CefV8Context::GetCurrentContext();
void (^outputHandle)(NSFileHandle *fileHandle, CefRefPtr<CefV8Value> function) = nil;
void (^taskTerminatedHandle)() = nil;
outputHandle = ^(NSFileHandle *fileHandle, CefRefPtr<CefV8Value> function) {
context->Enter();
NSData *data = [fileHandle availableData];
NSString *contents = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
CefV8ValueList args;
args.push_back(CefV8Value::CreateString(std::string([contents UTF8String], [contents lengthOfBytesUsingEncoding:NSUTF8StringEncoding])));
CefRefPtr<CefV8Value> retval = function->ExecuteFunction(function, args);
if (function->HasException()) {
throwException(context->GetGlobal(), function->GetException(), @"Error thrown in OutputHandle");
}
[contents release];
context->Exit();
};
taskTerminatedHandle = ^() {
context->Enter();
NSString *output = [[NSString alloc] initWithData:[[stdout fileHandleForReading] readDataToEndOfFile] encoding:NSUTF8StringEncoding];
NSString *errorOutput = [[NSString alloc] initWithData:[[task.standardError fileHandleForReading] readDataToEndOfFile] encoding:NSUTF8StringEncoding];
CefV8ValueList args;
args.push_back(CefV8Value::CreateInt([task terminationStatus]));
args.push_back(CefV8Value::CreateString([output UTF8String]));
args.push_back(CefV8Value::CreateString([errorOutput UTF8String]));
callback->ExecuteFunction(callback, args);
if (callback->HasException()) {
throwException(context->GetGlobal(), callback->GetException(), @"Error thrown in TaskTerminatedHandle");
}
context->Exit();
stdout.fileHandleForReading.writeabilityHandler = nil;
stderr.fileHandleForReading.writeabilityHandler = nil;
};
task.terminationHandler = ^(NSTask *) {
dispatch_sync(dispatch_get_main_queue(), taskTerminatedHandle);
};
CefRefPtr<CefV8Value> stdoutFunction = options->GetValue("stdout");
if (stdoutFunction->IsFunction()) {
stdout.fileHandleForReading.writeabilityHandler = ^(NSFileHandle *fileHandle) {
dispatch_sync(dispatch_get_main_queue(), ^() {
outputHandle(fileHandle, stdoutFunction);
});
};
}
CefRefPtr<CefV8Value> stderrFunction = options->GetValue("stderr");
if (stderrFunction->IsFunction()) {
stderr.fileHandleForReading.writeabilityHandler = ^(NSFileHandle *fileHandle) {
dispatch_sync(dispatch_get_main_queue(), ^() {
outputHandle(fileHandle, stderrFunction);
});
};
}
[task launch];
return true;
}
else if (name == "getPlatform") {
retval = CefV8Value::CreateString("mac");
return true;
}
return false;
};