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//
// PBGitRevList.m
// GitX
//
// Created by Pieter de Bie on 17-06-08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import "PBGitRevList.h"
#import "PBGitRepository.h"
#import "PBGitCommit.h"
#import "PBGitGrapher.h"
#import "PBGitRevSpecifier.h"
#include "git/oid.h"
#include <ext/stdio_filebuf.h>
#include <iostream>
#include <string>
#include <map>
using namespace std;
@implementation PBGitRevList
@synthesize commits;
- (id)initWithRepository:(PBGitRepository *)repo
{
repository = repo;
[repository addObserver:self forKeyPath:@"currentBranch" options:0 context:nil];
return self;
}
- (void) reload
{
[self readCommitsForce: YES];
}
- (void) readCommitsForce: (BOOL) force
{
// We use refparse to get the commit sha that we will parse. That way,
// we can check if the current branch is the same as the previous one
// and in that case we don't have to reload the revision list.
// If no branch is selected, don't do anything
if (![repository currentBranch])
return;
PBGitRevSpecifier* newRev = [repository currentBranch];
NSString* newSha = nil;
if (!force && newRev && [newRev isSimpleRef]) {
newSha = [repository parseReference:[newRev simpleRef]];
if ([newSha isEqualToString:lastSha])
return;
}
lastSha = newSha;
NSThread * commitThread = [[NSThread alloc] initWithTarget: self selector: @selector(walkRevisionListWithSpecifier:) object:newRev];
[commitThread start];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDictionary *)change context:(void *)context
{
if (object == repository)
[self readCommitsForce: NO];
}
- (void) walkRevisionListWithSpecifier: (PBGitRevSpecifier*) rev
{
NSDate *start = [NSDate date];
NSMutableArray* revisions = [NSMutableArray array];
PBGitGrapher* g = [[PBGitGrapher alloc] initWithRepository: repository];
std::map<string, NSStringEncoding> encodingMap;
NSString *formatString = @"--pretty=format:%H\01%e\01%an\01%s\01%P\01%at";
BOOL showSign = [rev hasLeftRight];
if (showSign)
formatString = [formatString stringByAppendingString:@"\01%m"];
NSMutableArray *arguments = [NSMutableArray arrayWithObjects:@"log", @"-z", @"--early-output", @"--topo-order", @"--children", formatString, nil];
if (!rev)
[arguments addObject:@"HEAD"];
else
[arguments addObjectsFromArray:[rev parameters]];
NSString *directory = rev.workingDirectory ? [rev.workingDirectory path] : [[repository fileURL] path];
NSTask *task = [PBEasyPipe taskForCommand:[PBGitBinary path] withArgs:arguments inDir:directory];
[task launch];
NSFileHandle* handle = [[task standardOutput] fileHandleForReading];
int fd = [handle fileDescriptor];
__gnu_cxx::stdio_filebuf<char> buf(fd, std::ios::in);
std::istream stream(&buf);
int num = 0;
while (true) {
string sha;
if (!getline(stream, sha, '\1'))
break;
// We reached the end of some temporary output. Show what we have
// until now, and then start again. The sha of the next thing is still
// in this buffer. So, we use a substring of current input.
if (sha[1] == 'i') // Matches 'Final output'
{
num = 0;
[self performSelectorOnMainThread:@selector(setCommits:) withObject:revisions waitUntilDone:NO];
g = [[PBGitGrapher alloc] initWithRepository: repository];
revisions = [NSMutableArray array];
// If the length is < 40, then there are no commits.. quit now
if (sha.length() < 40)
break;
sha = sha.substr(sha.length() - 40, 40);
}
// From now on, 1.2 seconds
string encoding_str;
getline(stream, encoding_str, '\1');
NSStringEncoding encoding = NSUTF8StringEncoding;
if (encoding_str.length())
{
if (encodingMap.find(encoding_str) != encodingMap.end()) {
encoding = encodingMap[encoding_str];
} else {
encoding = CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding((CFStringRef)[NSString stringWithUTF8String:encoding_str.c_str()]));
encodingMap[encoding_str] = encoding;
}
}
git_oid oid;
git_oid_mkstr(&oid, sha.c_str());
PBGitCommit* newCommit = [[PBGitCommit alloc] initWithRepository:repository andSha:oid];
string author;
getline(stream, author, '\1');
string subject;
getline(stream, subject, '\1');
string parentString;
getline(stream, parentString, '\1');
if (parentString.size() != 0)
{
if (((parentString.size() + 1) % 41) != 0) {
NSLog(@"invalid parents: %i", parentString.size());
continue;
}
int nParents = (parentString.size() + 1) / 41;
git_oid *parents = (git_oid *)malloc(sizeof(git_oid) * nParents);
int parentIndex;
for (parentIndex = 0; parentIndex < nParents; ++parentIndex)
git_oid_mkstr(parents + parentIndex, parentString.substr(parentIndex * 41, 40).c_str());
newCommit.parentShas = parents;
newCommit.nParents = nParents;
}
int time;
stream >> time;
[newCommit setSubject:[NSString stringWithCString:subject.c_str() encoding:encoding]];
[newCommit setAuthor:[NSString stringWithCString:author.c_str() encoding:encoding]];
[newCommit setTimestamp:time];
if (showSign)
{
char c;
stream >> c; // Remove separator
stream >> c;
if (c != '>' && c != '<' && c != '^' && c != '-')
NSLog(@"Error loading commits: sign not correct");
[newCommit setSign: c];
}
char c;
stream >> c;
if (c != '\0')
cout << "Error" << endl;
[revisions addObject: newCommit];
[g decorateCommit: newCommit];
if (++num % 1000 == 0)
[self performSelectorOnMainThread:@selector(setCommits:) withObject:revisions waitUntilDone:NO];
}
#ifdef DEBUG_BUILD
NSTimeInterval duration = [[NSDate date] timeIntervalSinceDate:start];
NSLog(@"Loaded %i commits in %f seconds", num, duration);
#endif
// Make sure the commits are stored before exiting.
[self performSelectorOnMainThread:@selector(setCommits:) withObject:revisions waitUntilDone:YES];
[task waitUntilExit];
}
@end
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