PBGitBinary.m

   1 //
   2 //  PBGitBinary.m
   3 //  GitX
   4 //
   5 //  Created by Pieter de Bie on 04-10-08.
   6 //  Copyright 2008 __MyCompanyName__. All rights reserved.
   7 //
   8
   9 #import "PBGitBinary.h"
  10 #import "PBEasyPipe.h"
  11
  12 @implementation PBGitBinary
  13
  14 static NSString* gitPath;
  15
  16 + (void) initialize
  17 {
  18         gitPath = nil;
  19
  20         // Try to find the path of the Git binary
  21         char* path = getenv("GIT_PATH");
  22         if (path != nil) {
  23                 gitPath = [NSString stringWithCString:path];
  24                 return;
  25         }
  26
  27         // No explicit path. Try it with "which"
  28         gitPath = [PBEasyPipe outputForCommand:@"/usr/bin/which" withArgs:[NSArray arrayWithObject:@"git"]];
  29         if (gitPath.length > 0)
  30                 return;
  31
  32         // Still no path. Let's try some default locations.
  33         for (NSString* location in [PBGitBinary searchLocations]) {
  34                 if ([[NSFileManager defaultManager] fileExistsAtPath:location]) {
  35                         gitPath = location;
  36                         return;
  37                 }
  38         }
  39
  40         NSLog(@"Could not find a git binary!");
  41 }
  42
  43 + (NSString *) path;
  44 {
  45         return gitPath;
  46 }
  47
  48 static NSMutableArray *locations = nil;
  49
  50 + (NSArray *) searchLocations
  51 {
  52         if (locations)
  53                 return locations;
  54
  55         locations = [NSMutableArray arrayWithObjects:@"/opt/local/bin/git",
  56                                                   @"/sw/bin/git",
  57                                                   @"/opt/git/bin/git",
  58                                                   @"/usr/local/bin/git",
  59                                                   @"/usr/local/git/bin/git",
  60                                                   nil];
  61
  62         [locations addObject:[@"~/bin/git" stringByExpandingTildeInPath]];
  63         return locations;
  64 }
  65
  66 + (NSString *) notFoundError
  67 {
  68         NSMutableString *error = [NSMutableString stringWithString:
  69                                                           @"Could not find a git binary\n"
  70                                                           "Please make sure there is a git binary in one of the following locations:\n\n"];
  71         for (NSString *location in [PBGitBinary searchLocations]) {
  72                 [error appendFormat:@"\t%@\n", location];
  73         }
  74         return error;
  75 }
  76
  77 @end