mirror of
https://github.com/kennethreitz-archive/gitx.git
synced 2026-06-05 23:40:18 +00:00
Pieter de Bie
311 lines
9.3 KiB
Objective-C
311 lines
9.3 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 "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;
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static NSString* gitPath;
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+ (void) initialize
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{
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// Try to find the path of the Git binary
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char* path = getenv("GIT_PATH");
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if (path != nil) {
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gitPath = [NSString stringWithCString:path];
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return;
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}
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// No explicit path. Try it with "which"
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gitPath = [PBEasyPipe outputForCommand:@"/usr/bin/which" withArgs:[NSArray arrayWithObject:@"git"]];
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if (gitPath.length > 0)
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return;
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// Still no path. Let's try some default locations.
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NSArray* locations = [NSArray arrayWithObjects:@"/opt/local/bin/git",
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@"/sw/bin/git",
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@"/opt/git/bin/git",
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@"/usr/local/bin/git",
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nil];
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for (NSString* location in locations) {
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if ([[NSFileManager defaultManager] fileExistsAtPath:location]) {
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gitPath = location;
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return;
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}
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}
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NSLog(@"Could not find a git binary!");
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}
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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:gitPath 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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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:gitPath 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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- (BOOL)readFromFileWrapper:(NSFileWrapper *)fileWrapper ofType:(NSString *)typeName error:(NSError **)outError
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{
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BOOL success = NO;
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if (![fileWrapper isDirectory]) {
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if (outError) {
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NSDictionary* userInfo = [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"Reading files is not supported.", [fileWrapper 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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} else {
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NSURL* gitDirURL = [PBGitRepository gitDirForURL:[self fileURL]];
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if (gitDirURL) {
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[self setFileURL:gitDirURL];
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success = YES;
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} else if (outError) {
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NSDictionary* userInfo = [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"%@ does not appear to be a git repository.", [fileWrapper 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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if (success) {
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[self setup];
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[self readCurrentBranch];
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}
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}
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return success;
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}
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- (void) setup
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{
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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 andRevSpecifier:(PBGitRevSpecifier*) rev
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{
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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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[self selectBranch: [self addBranch: rev]];
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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* displayName = self.fileURL.path.lastPathComponent;
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if ([displayName isEqualToString:@".git"])
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displayName = [self.fileURL.path stringByDeletingLastPathComponent].lastPathComponent;
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return displayName;
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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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PBGitWindowController* controller = [[PBGitWindowController alloc] initWithRepository:self];
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[self addWindowController:controller];
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[controller release];
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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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BOOL ret = NO;
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NSString* output = [PBEasyPipe outputForCommand:gitPath withArgs:[NSArray arrayWithObjects:@"for-each-ref", @"--format=%(refname) %(objecttype) %(objectname) %(*objectname)", @"refs", nil] inDir: self.fileURL.path];
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NSArray* lines = [output componentsSeparatedByString:@"\n"];
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refs = [NSMutableDictionary dictionary];
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for (NSString* line in lines) {
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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 ([[newRef type] isEqualToString:@"head"] || [[newRef type] isEqualToString:@"remote"])
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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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self.refs = refs;
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return ret;
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}
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- (PBGitRevSpecifier*) headRef
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{
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NSString* branch = [self parseSymbolicReference: @"HEAD"];
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if (branch && [branch hasPrefix:@"refs/heads/"])
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return [[PBGitRevSpecifier alloc] initWithRef:[PBGitRef refFromString:branch]];
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return [[PBGitRevSpecifier alloc] initWithRef:[PBGitRef refFromString:@"HEAD"]];
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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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- (void) selectBranch: (PBGitRevSpecifier*) rev
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{
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int i;
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for (i = 0; i < [branches count]; i++) {
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PBGitRevSpecifier* aRev = [branches objectAtIndex:i];
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if (rev == aRev) {
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self.currentBranch = [NSIndexSet indexSetWithIndex:i];
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return;
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}
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}
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}
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- (void) readCurrentBranch
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{
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[self selectBranch: [self addBranch: [self headRef]]];
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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:gitPath withArgs:arguments];
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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:gitPath withArgs:arguments inDir: self.fileURL.path];
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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:gitPath withArgs:arguments inDir: self.fileURL.path retValue: ret];
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}
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- (NSString*) parseReference:(NSString *)reference
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{
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return [self outputForArguments:[NSArray arrayWithObjects: @"rev-parse", reference, nil]];
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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", 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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@end
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