mirror of
https://github.com/kennethreitz-archive/gitx.git
synced 2026-06-05 23:40:18 +00:00
Pieter de Bie
fa6ff44d0b
We used a BOOL value which was returned afterwards, but we might as well just return early and simplify everything
461 lines
14 KiB
Objective-C
461 lines
14 KiB
Objective-C
//
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// PBGitRepository.m
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// GitTest
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//
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// Created by Pieter de Bie on 13-06-08.
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// Copyright 2008 __MyCompanyName__. All rights reserved.
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//
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#import "PBGitRepository.h"
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#import "PBGitCommit.h"
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#import "PBGitWindowController.h"
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#import "PBGitBinary.h"
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#import "NSFileHandleExt.h"
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#import "PBEasyPipe.h"
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#import "PBGitRef.h"
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#import "PBGitRevSpecifier.h"
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NSString* PBGitRepositoryErrorDomain = @"GitXErrorDomain";
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@implementation PBGitRepository
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@synthesize revisionList, branches, currentBranch, refs, hasChanged, config;
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- (BOOL)readFromData:(NSData *)data ofType:(NSString *)typeName error:(NSError **)outError
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{
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if (outError) {
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*outError = [NSError errorWithDomain:PBGitRepositoryErrorDomain
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code:0
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userInfo:[NSDictionary dictionaryWithObject:@"Reading files is not supported." forKey:NSLocalizedFailureReasonErrorKey]];
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}
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return NO;
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}
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+ (BOOL) isBareRepository: (NSString*) path
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{
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return [[PBEasyPipe outputForCommand:[PBGitBinary path] withArgs:[NSArray arrayWithObjects:@"rev-parse", @"--is-bare-repository", nil] inDir:path] isEqualToString:@"true"];
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}
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+ (NSURL*)gitDirForURL:(NSURL*)repositoryURL;
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{
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if (![PBGitBinary path])
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return nil;
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NSString* repositoryPath = [repositoryURL path];
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if ([self isBareRepository:repositoryPath])
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return repositoryURL;
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// Use rev-parse to find the .git dir for the repository being opened
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NSString* newPath = [PBEasyPipe outputForCommand:[PBGitBinary path] withArgs:[NSArray arrayWithObjects:@"rev-parse", @"--git-dir", nil] inDir:repositoryPath];
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if ([newPath isEqualToString:@".git"])
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return [NSURL fileURLWithPath:[repositoryPath stringByAppendingPathComponent:@".git"]];
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if ([newPath length] > 0)
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return [NSURL fileURLWithPath:newPath];
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return nil;
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}
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// For a given path inside a repository, return either the .git dir
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// (for a bare repo) or the directory above the .git dir otherwise
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+ (NSURL*)baseDirForURL:(NSURL*)repositoryURL;
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{
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NSURL* gitDirURL = [self gitDirForURL:repositoryURL];
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NSString* repositoryPath = [gitDirURL path];
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if (![self isBareRepository:repositoryPath]) {
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repositoryURL = [NSURL fileURLWithPath:[[repositoryURL path] stringByDeletingLastPathComponent]];
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}
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return repositoryURL;
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}
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// NSFileWrapper is broken and doesn't work when called on a directory containing a large number of directories and files.
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//because of this it is safer to implement readFromURL than readFromFileWrapper.
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//Because NSFileManager does not attempt to recursively open all directories and file when fileExistsAtPath is called
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//this works much better.
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- (BOOL)readFromURL:(NSURL *)absoluteURL ofType:(NSString *)typeName error:(NSError **)outError
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{
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if (![PBGitBinary path])
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{
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if (outError) {
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NSDictionary* userInfo = [NSDictionary dictionaryWithObject:[PBGitBinary notFoundError]
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forKey:NSLocalizedRecoverySuggestionErrorKey];
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*outError = [NSError errorWithDomain:PBGitRepositoryErrorDomain code:0 userInfo:userInfo];
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}
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return NO;
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}
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BOOL isDirectory = FALSE;
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[[NSFileManager defaultManager] fileExistsAtPath:[absoluteURL path] isDirectory:&isDirectory];
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if (!isDirectory) {
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if (outError) {
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NSDictionary* userInfo = [NSDictionary dictionaryWithObject:@"Reading files is not supported."
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forKey:NSLocalizedRecoverySuggestionErrorKey];
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*outError = [NSError errorWithDomain:PBGitRepositoryErrorDomain code:0 userInfo:userInfo];
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}
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return NO;
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}
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NSURL* gitDirURL = [PBGitRepository gitDirForURL:[self fileURL]];
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if (!gitDirURL) {
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if (outError) {
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NSDictionary* userInfo = [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"%@ does not appear to be a git repository.", [self fileName]]
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forKey:NSLocalizedRecoverySuggestionErrorKey];
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*outError = [NSError errorWithDomain:PBGitRepositoryErrorDomain code:0 userInfo:userInfo];
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}
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return NO;
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}
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[self setFileURL:gitDirURL];
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[self setup];
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[self readCurrentBranch];
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return YES;
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}
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- (void) setup
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{
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config = [[PBGitConfig alloc] initWithRepository:self.fileURL.path];
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self.branches = [NSMutableArray array];
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[self reloadRefs];
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revisionList = [[PBGitRevList alloc] initWithRepository:self];
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}
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- (id) initWithURL: (NSURL*) path
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{
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if (![PBGitBinary path])
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return nil;
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NSURL* gitDirURL = [PBGitRepository gitDirForURL:path];
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if (!gitDirURL)
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return nil;
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self = [self init];
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[self setFileURL: gitDirURL];
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[self setup];
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// We don't want the window controller to display anything yet..
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// We'll leave that to the caller of this method.
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#ifndef CLI
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[self addWindowController:[[PBGitWindowController alloc] initWithRepository:self displayDefault:NO]];
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#endif
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[self showWindows];
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return self;
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}
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// The fileURL the document keeps is to the .git dir, but that’s pretty
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// useless for display in the window title bar, so we show the directory above
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- (NSString*)displayName
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{
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NSString* dirName = self.fileURL.path.lastPathComponent;
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if ([dirName isEqualToString:@".git"])
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dirName = [self.fileURL.path stringByDeletingLastPathComponent].lastPathComponent;
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NSString* displayName;
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if (![[PBGitRef refFromString:[[self headRef] simpleRef]] type]) {
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displayName = [NSString stringWithFormat:@"%@ (detached HEAD)", dirName];
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} else {
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displayName = [NSString stringWithFormat:@"%@ (branch: %@)", dirName,
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[[self headRef] description]];
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}
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return displayName;
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}
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// Get the .gitignore file at the root of the repository
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- (NSString*)gitIgnoreFilename
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{
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return [[self workingDirectory] stringByAppendingPathComponent:@".gitignore"];
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}
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- (BOOL)isBareRepository
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{
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if([self workingDirectory]) {
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return [PBGitRepository isBareRepository:[self workingDirectory]];
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} else {
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return true;
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}
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}
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// Overridden to create our custom window controller
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- (void)makeWindowControllers
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{
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#ifndef CLI
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[self addWindowController: [[PBGitWindowController alloc] initWithRepository:self displayDefault:YES]];
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#endif
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}
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- (PBGitWindowController *)windowController
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{
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if ([[self windowControllers] count] == 0)
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return NULL;
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return [[self windowControllers] objectAtIndex:0];
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}
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- (void) addRef: (PBGitRef *) ref fromParameters: (NSArray *) components
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{
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NSString* type = [components objectAtIndex:1];
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NSString* sha;
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if ([type isEqualToString:@"tag"] && [components count] == 4)
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sha = [components objectAtIndex:3];
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else
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sha = [components objectAtIndex:2];
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NSMutableArray* curRefs;
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if (curRefs = [refs objectForKey:sha])
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[curRefs addObject:ref];
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else
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[refs setObject:[NSMutableArray arrayWithObject:ref] forKey:sha];
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}
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// reloadRefs: reload all refs in the repository, like in readRefs
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// To stay compatible, this does not remove a ref from the branches list
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// even after it has been deleted.
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// returns YES when a ref was changed
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- (BOOL) reloadRefs
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{
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_headRef = nil;
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BOOL ret = NO;
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refs = [NSMutableDictionary dictionary];
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NSString* output = [PBEasyPipe outputForCommand:[PBGitBinary path]
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withArgs:[NSArray arrayWithObjects:@"for-each-ref", @"--format=%(refname) %(objecttype) %(objectname)"
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" %(*objectname)", @"refs", nil]
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inDir: self.fileURL.path];
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NSArray* lines = [output componentsSeparatedByString:@"\n"];
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for (NSString* line in lines) {
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// If its an empty line, skip it (e.g. with empty repositories)
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if ([line length] == 0)
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continue;
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NSArray* components = [line componentsSeparatedByString:@" "];
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// First do the ref matching. If this ref is new, add it to our ref list
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PBGitRef *newRef = [PBGitRef refFromString:[components objectAtIndex:0]];
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PBGitRevSpecifier* revSpec = [[PBGitRevSpecifier alloc] initWithRef:newRef];
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if ([self addBranch:revSpec] != revSpec)
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ret = YES;
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// Also add this ref to the refs list
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[self addRef:newRef fromParameters:components];
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}
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// Add an "All branches" option in the branches list
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[self addBranch:[PBGitRevSpecifier allBranchesRevSpec]];
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[self addBranch:[PBGitRevSpecifier localBranchesRevSpec]];
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[[[self windowController] window] setTitle:[self displayName]];
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return ret;
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}
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- (void) lazyReload
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{
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if (!hasChanged)
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return;
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[self reloadRefs];
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[self.revisionList reload];
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hasChanged = NO;
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}
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- (PBGitRevSpecifier *)headRef
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{
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if (_headRef)
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return _headRef;
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NSString* branch = [self parseSymbolicReference: @"HEAD"];
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if (branch && [branch hasPrefix:@"refs/heads/"])
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_headRef = [[PBGitRevSpecifier alloc] initWithRef:[PBGitRef refFromString:branch]];
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else
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_headRef = [[PBGitRevSpecifier alloc] initWithRef:[PBGitRef refFromString:@"HEAD"]];
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return _headRef;
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}
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// Returns either this object, or an existing, equal object
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- (PBGitRevSpecifier*) addBranch: (PBGitRevSpecifier*) rev
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{
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if ([[rev parameters] count] == 0)
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rev = [self headRef];
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// First check if the branch doesn't exist already
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for (PBGitRevSpecifier* r in branches)
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if ([rev isEqualTo: r])
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return r;
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[self willChangeValueForKey:@"branches"];
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[branches addObject: rev];
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[self didChangeValueForKey:@"branches"];
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return rev;
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}
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- (BOOL)removeBranch:(PBGitRevSpecifier *)rev
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{
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for (PBGitRevSpecifier *r in branches) {
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if ([rev isEqualTo:r]) {
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[self willChangeValueForKey:@"branches"];
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[branches removeObject:r];
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[self didChangeValueForKey:@"branches"];
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return TRUE;
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}
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}
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return FALSE;
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}
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- (void) readCurrentBranch
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{
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self.currentBranch = [self addBranch: [self headRef]];
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}
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- (NSString *) workingDirectory
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{
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if ([self.fileURL.path hasSuffix:@"/.git"])
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return [self.fileURL.path substringToIndex:[self.fileURL.path length] - 5];
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else if ([[self outputForCommand:@"rev-parse --is-inside-work-tree"] isEqualToString:@"true"])
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return [PBGitBinary path];
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return nil;
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}
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- (int) returnValueForCommand:(NSString *)cmd
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{
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int i;
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[self outputForCommand:cmd retValue: &i];
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return i;
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}
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- (NSFileHandle*) handleForArguments:(NSArray *)args
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{
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NSString* gitDirArg = [@"--git-dir=" stringByAppendingString:self.fileURL.path];
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NSMutableArray* arguments = [NSMutableArray arrayWithObject: gitDirArg];
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[arguments addObjectsFromArray: args];
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return [PBEasyPipe handleForCommand:[PBGitBinary path] withArgs:arguments];
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}
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- (NSFileHandle*) handleInWorkDirForArguments:(NSArray *)args
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{
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NSString* gitDirArg = [@"--git-dir=" stringByAppendingString:self.fileURL.path];
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NSMutableArray* arguments = [NSMutableArray arrayWithObject: gitDirArg];
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[arguments addObjectsFromArray: args];
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return [PBEasyPipe handleForCommand:[PBGitBinary path] withArgs:arguments inDir:[self workingDirectory]];
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}
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- (NSFileHandle*) handleForCommand:(NSString *)cmd
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{
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NSArray* arguments = [cmd componentsSeparatedByString:@" "];
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return [self handleForArguments:arguments];
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}
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- (NSString*) outputForCommand:(NSString *)cmd
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{
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NSArray* arguments = [cmd componentsSeparatedByString:@" "];
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return [self outputForArguments: arguments];
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}
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- (NSString*) outputForCommand:(NSString *)str retValue:(int *)ret;
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{
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NSArray* arguments = [str componentsSeparatedByString:@" "];
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return [self outputForArguments: arguments retValue: ret];
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}
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- (NSString*) outputForArguments:(NSArray*) arguments
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{
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return [PBEasyPipe outputForCommand:[PBGitBinary path] withArgs:arguments inDir: self.fileURL.path];
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}
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- (NSString*) outputInWorkdirForArguments:(NSArray*) arguments
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{
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return [PBEasyPipe outputForCommand:[PBGitBinary path] withArgs:arguments inDir: [self workingDirectory]];
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}
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- (NSString*) outputInWorkdirForArguments:(NSArray *)arguments retValue:(int *)ret
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{
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return [PBEasyPipe outputForCommand:[PBGitBinary path] withArgs:arguments inDir:[self workingDirectory] retValue: ret];
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}
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- (NSString*) outputForArguments:(NSArray *)arguments retValue:(int *)ret
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{
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return [PBEasyPipe outputForCommand:[PBGitBinary path] withArgs:arguments inDir: self.fileURL.path retValue: ret];
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}
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- (NSString*) outputForArguments:(NSArray *)arguments inputString:(NSString *)input retValue:(int *)ret
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{
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return [PBEasyPipe outputForCommand:[PBGitBinary path]
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withArgs:arguments
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inDir:[self workingDirectory]
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inputString:input
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retValue: ret];
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}
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- (NSString *)outputForArguments:(NSArray *)arguments inputString:(NSString *)input byExtendingEnvironment:(NSDictionary *)dict retValue:(int *)ret
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{
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return [PBEasyPipe outputForCommand:[PBGitBinary path]
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withArgs:arguments
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inDir:[self workingDirectory]
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byExtendingEnvironment:dict
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inputString:input
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retValue: ret];
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}
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- (BOOL)executeHook:(NSString *)name output:(NSString **)output
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{
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return [self executeHook:name withArgs:[NSArray array] output:output];
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}
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- (BOOL)executeHook:(NSString *)name withArgs:(NSArray *)arguments output:(NSString **)output
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{
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NSString *hookPath = [[[[self fileURL] path] stringByAppendingPathComponent:@"hooks"] stringByAppendingPathComponent:name];
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if (![[NSFileManager defaultManager] isExecutableFileAtPath:hookPath])
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return TRUE;
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NSDictionary *info = [NSDictionary dictionaryWithObjectsAndKeys:
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[self fileURL].path, @"GIT_DIR",
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[[self fileURL].path stringByAppendingPathComponent:@"index"], @"GIT_INDEX_FILE",
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nil
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];
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int ret = 1;
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NSString *_output = [PBEasyPipe outputForCommand:hookPath withArgs:arguments inDir:[self workingDirectory] byExtendingEnvironment:info inputString:nil retValue:&ret];
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if (output)
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*output = _output;
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return ret == 0;
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}
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- (NSString *)parseReference:(NSString *)reference
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{
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int ret = 1;
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NSString *ref = [self outputForArguments:[NSArray arrayWithObjects: @"rev-parse", @"--verify", reference, nil] retValue: &ret];
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if (ret)
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return nil;
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return ref;
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}
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- (NSString*) parseSymbolicReference:(NSString*) reference
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{
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NSString* ref = [self outputForArguments:[NSArray arrayWithObjects: @"symbolic-ref", @"-q", reference, nil]];
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if ([ref hasPrefix:@"refs/"])
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return ref;
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return nil;
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}
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- (void) finalize
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{
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NSLog(@"Dealloc of repository");
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[super finalize];
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}
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@end
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