mirror of
https://github.com/kennethreitz-archive/gitx.git
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Pieter de Bie
3ba009dcde
This makes sure that any git binary found will actually be version 1.5.4 or higher.
113 lines
2.4 KiB
Objective-C
113 lines
2.4 KiB
Objective-C
//
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// PBGitBinary.m
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// GitX
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//
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// Created by Pieter de Bie on 04-10-08.
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// Copyright 2008 __MyCompanyName__. All rights reserved.
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//
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#import "PBGitBinary.h"
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#import "PBEasyPipe.h"
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@implementation PBGitBinary
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static NSString* gitPath = nil;
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+ (NSString *)versionForPath:(NSString *)path
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{
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if (!path)
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return nil;
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if (![[NSFileManager defaultManager] fileExistsAtPath:path])
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return nil;
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NSString *version = [PBEasyPipe outputForCommand:path withArgs:[NSArray arrayWithObject:@"--version"]];
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if ([version hasPrefix:@"git version "])
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return [version substringFromIndex:12];
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return nil;
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}
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+ (BOOL) acceptBinary:(NSString *)path
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{
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if (!path)
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return NO;
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NSString *version = [self versionForPath:path];
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if (!version)
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return NO;
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int c = [version compare:@"1.5.4"];
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if (c == NSOrderedSame || c == NSOrderedDescending) {
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gitPath = path;
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return YES;
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}
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NSLog(@"Found a git binary at %@, but is only version %@", path, version);
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return NO;
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}
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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 && [self acceptBinary:[NSString stringWithCString:path]])
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return;
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// No explicit path. Try it with "which"
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NSString *whichPath = [PBEasyPipe outputForCommand:@"/usr/bin/which" withArgs:[NSArray arrayWithObject:@"git"]];
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if ([self acceptBinary:whichPath])
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return;
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// Still no path. Let's try some default locations.
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for (NSString* location in [PBGitBinary searchLocations]) {
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if ([self acceptBinary:location])
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return;
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}
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NSLog(@"Could not find a git binary higher than version 1.5.4.");
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}
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+ (NSString *) path;
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{
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return gitPath;
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}
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static NSMutableArray *locations = nil;
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+ (NSArray *) searchLocations
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{
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if (locations)
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return locations;
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locations = [NSMutableArray 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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@"/usr/local/git/bin/git",
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nil];
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[locations addObject:[@"~/bin/git" stringByExpandingTildeInPath]];
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return locations;
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}
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+ (NSString *) notFoundError
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{
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NSMutableString *error = [NSMutableString stringWithString:
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@"Could not find a git binary version 1.5.4 or higher.\n"
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"Please make sure there is a git binary in one of the following locations:\n\n"];
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for (NSString *location in [PBGitBinary searchLocations]) {
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[error appendFormat:@"\t%@\n", location];
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}
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return error;
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}
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+ (NSString *)version
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{
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return [self versionForPath:gitPath];
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}
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@end
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