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/
PBEasyPipe.m
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/
PBEasyPipe.m
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//
// PBEasyPipe.m
// GitX
//
// Created by Pieter de Bie on 16-06-08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import "PBEasyPipe.h"
@implementation PBEasyPipe
+ (NSFileHandle*) handleForCommand: (NSString*) cmd withArgs: (NSArray*) args
{
return [self handleForCommand:cmd withArgs:args inDir:nil];
}
+ (NSTask *) taskForCommand:(NSString *)cmd withArgs:(NSArray *)args inDir:(NSString *)dir
{
NSTask* task = [[NSTask alloc] init];
task.launchPath = cmd;
task.arguments = args;
if (dir)
task.currentDirectoryPath = dir;
if ([[NSUserDefaults standardUserDefaults] boolForKey:@"Show Debug Messages"])
NSLog(@"Starting command `%@ %@` in dir %@", cmd, [args componentsJoinedByString:@" "], dir);
#ifdef CLI
NSLog(@"Starting command `%@ %@` in dir %@", cmd, [args componentsJoinedByString:@" "], dir);
#endif
NSPipe* pipe = [NSPipe pipe];
task.standardOutput = pipe;
return task;
}
+ (NSFileHandle*) handleForCommand: (NSString*) cmd withArgs: (NSArray*) args inDir: (NSString*) dir
{
NSTask *task = [self taskForCommand:cmd withArgs:args inDir:dir];
NSFileHandle* handle = [task.standardOutput fileHandleForReading];
[task launch];
return handle;
}
+ (NSString*) outputForCommand:(NSString *) cmd
withArgs:(NSArray *) args
inDir:(NSString *) dir
retValue:(int *) ret
{
return [self outputForCommand:cmd withArgs:args inDir:dir byExtendingEnvironment:nil inputString:nil retValue:ret];
}
+ (NSString*) outputForCommand:(NSString *) cmd
withArgs:(NSArray *) args
inDir:(NSString *) dir
inputString:(NSString *) input
retValue:(int *) ret
{
return [self outputForCommand:cmd withArgs:args inDir:dir byExtendingEnvironment:nil inputString:input retValue:ret];
}
+ (NSString*) outputForCommand:(NSString *) cmd
withArgs:(NSArray *) args
inDir:(NSString *) dir
byExtendingEnvironment:(NSDictionary *)dict
inputString:(NSString *) input
retValue:(int *) ret
{
NSTask *task = [self taskForCommand:cmd withArgs:args inDir:dir];
if (dict) {
NSMutableDictionary *env = [[[NSProcessInfo processInfo] environment] mutableCopy];
[env addEntriesFromDictionary:dict];
task.environment = env;
}
NSFileHandle* handle = [task.standardOutput fileHandleForReading];
if (input) {
task.standardInput = [NSPipe pipe];
NSFileHandle *inHandle = [task.standardInput fileHandleForWriting];
[inHandle writeData:[input dataUsingEncoding:NSUTF8StringEncoding]];
[inHandle closeFile];
}
[task launch];
NSData* data = [handle readDataToEndOfFile];
NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
if (!string)
string = [[NSString alloc] initWithData:data encoding:NSISOLatin1StringEncoding];
// Strip trailing newline
if ([string hasSuffix:@"\n"])
string = [string substringToIndex:[string length]-1];
[task waitUntilExit];
if (ret)
*ret = [task terminationStatus];
return string;
}
// We don't use the above function because then we'd have to wait until the program was finished
// with running
+ (NSString*) outputForCommand: (NSString*) cmd withArgs: (NSArray*) args inDir: (NSString*) dir
{
NSTask *task = [self taskForCommand:cmd withArgs:args inDir:dir];
NSFileHandle* handle = [task.standardOutput fileHandleForReading];
[task launch];
#warning This can cause a "Bad file descriptor"... when?
NSData *data;
@try {
data = [handle readDataToEndOfFile];
}
@catch (NSException * e) {
NSLog(@"Got a bad file descriptor in %s!", _cmd);
if ([NSThread currentThread] != [NSThread mainThread])
[task waitUntilExit];
return nil;
}
NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
if (!string)
string = [[NSString alloc] initWithData:data encoding:NSISOLatin1StringEncoding];
// Strip trailing newline
if ([string hasSuffix:@"\n"])
string = [string substringToIndex:[string length]-1];
if ([NSThread currentThread] != [NSThread mainThread])
[task waitUntilExit];
return string;
}
+ (NSString*) outputForCommand: (NSString*) cmd withArgs: (NSArray*) args
{
return [self outputForCommand:cmd withArgs:args inDir:nil];
}
@end