[英]How do I display into an NSTextView properly? NSString / NSInputStream / NSTextView
#import "AppDelegate.h"
@implementation AppDelegate
@synthesize inputStream;
@synthesize outputStream;
@synthesize textField;
@synthesize window;
@synthesize aText;
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
[self initNetworkCommunication];
}
- (void)initNetworkCommunication {
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"tec.skotos.net", 6730, &readStream, &writeStream);
inputStream = (__bridge NSInputStream *)readStream;
outputStream = (__bridge NSOutputStream *)writeStream;
[inputStream setDelegate:self];
[outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
NSString *response = [NSString stringWithFormat:@"/\\/connect: n/a!!n/a"];
NSData *data = [[NSData alloc] initWithData:[response dataUsingEncoding:NSASCIIStringEncoding]];
NSString *end = @"\n";
NSData *endData = [[NSData alloc] initWithData:[end dataUsingEncoding:NSASCIIStringEncoding]];
[outputStream write:[data bytes] maxLength:[data length]];
[outputStream write:[endData bytes] maxLength:[endData length]];
}
- (IBAction)sendMessage:(id)sender {
NSString *response = [textField stringValue ];
NSData *data = [[NSData alloc] initWithData:[response dataUsingEncoding:NSASCIIStringEncoding]];
NSString *end = @"\n";
NSData *endData = [[NSData alloc] initWithData:[end dataUsingEncoding:NSASCIIStringEncoding]];
[outputStream write:[data bytes] maxLength:[data length]];
[outputStream write:[endData bytes] maxLength:[endData length]];
}
- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent {
switch (streamEvent) {
case NSStreamEventOpenCompleted:
NSLog(@"Stream opened");
break;
case NSStreamEventHasSpaceAvailable:
NSLog(@"Has space");
break;
case NSStreamEventHasBytesAvailable:
if (theStream == inputStream) {
uint8_t buffer[900000];
long len;
while ([inputStream hasBytesAvailable]) {
len = [inputStream read:buffer maxLength:sizeof(buffer)];
if (len > 0) {
NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding];
NSLog(@"Has Bytes");
if (nil != output) {
NSLog(@"%@", output);
[window setString:output];
}
}
}
}
break;
case NSStreamEventEndEncountered:
NSLog(@"Error.");
break;
}
}
@end
因此,我正在尋找一種有效的方法來更改[window setString:output]方法。 這是我嘗試編寫的程序的.m文件,以便播放MUD(基於文本的游戲)。 輸入流表示與游戲服務器的連接,該服務器發送我的客戶信息(字節)。 每當hasBytesAvailable事件發生時,字節就會轉換為字符串。 這些字節然后顯示在窗口的文本字段中。 我遇到的問題是,每次事件發生時,它都會替換屏幕上最初顯示的內容。 我試圖創建一個保留輸出數據的占位符字符串,然后追加到該字符串以顯示。 它似乎沒有按照我想要的方式工作。 我希望能夠不斷從流中獲取數據,該流將在整個程序中連續不斷地顯示。 我已經嘗試過NSArray和NSMutableString ...我似乎無法弄清楚如何創建全局字符串變量,每次hasBytesAvailable事件發生時我都可以附加該變量。 謝謝大家的閱讀,希望能對您有所幫助。
回答有關解析HTML標簽的問題。 查看NSXMLParser和NSXMLParserDelegate自己解析它們。 其他看看HTML解析選項
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