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PBGitGrapher.mm
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PBGitGrapher.mm
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//
// PBGitGrapher.m
// GitX
//
// Created by Pieter de Bie on 17-06-08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
extern "C" {
#import "git/oid.h"
}
#import "PBGitGrapher.h"
#import "PBGitCommit.h"
#import "PBGitLane.h"
#import <vector>
using namespace std;
@implementation PBGitGrapher
#define MAX_LANES 32
- (id) initWithRepository: (PBGitRepository*) repo
{
refs = repo.refs;
repository = repo;
pl = new std::vector<PBGitLane>;
PBGitLane::resetColors();
//[PBGitLane resetColors];
return self;
}
- (void) decorateCommit: (PBGitCommit *) commit
{
int i = 0, newPos = -1;
std::vector<PBGitLane *> *currentLanes = new std::vector<PBGitLane *>;
std::vector<PBGitLane *> *previousLanes = (std::vector<PBGitLane *> *)pl;
NSMutableArray* lines = [NSMutableArray array];
PBGitLane *currentLane = NULL;
BOOL didFirst = NO;
// First, iterate over earlier columns and pass through any that don't want this commit
if (previous != nil) {
// We can't count until numColumns here, as it's only used for the width of the cell.
std::vector<PBGitLane *>::iterator it = previousLanes->begin();
for (; it < previousLanes->end(); ++it) {
i++;
// This is our commit! We should do a "merge": move the line from
// our upperMapping to their lowerMapping
if ((*it)->isCommit([commit sha])) {
if (!didFirst) {
didFirst = YES;
currentLanes->push_back(*it);
currentLane = currentLanes->back();
newPos = currentLanes->size();
[lines addObject: [PBGitGraphLine upperLineFrom: i to: newPos color: (*it)->index()]];
}
else {
[lines addObject: [PBGitGraphLine upperLineFrom: i to: newPos color: (*it)->index()]];
delete *it;
}
}
else {
// We are not this commit.
// Try to find an earlier column for this commit.
int j = 0;
BOOL found = NO;
std::vector<PBGitLane *>::iterator it2 = currentLanes->begin();
for (; it2 < currentLanes->end(); ++it2) {
j++;
// ??? what is this?
// if (j == newPos)
// continue;
if ((*it)->isCommit([commit sha])) {
// We already have a column for this commit. use it instead
[lines addObject: [PBGitGraphLine upperLineFrom: i to: j color: (*it)->index()]];
found = YES;
break;
}
}
// We need a new column for this.
if (found) {
//NSLog(@"Need to delete");
} else {
//NSLog(@"Found another");
currentLanes->push_back(*it);
[lines addObject: [PBGitGraphLine upperLineFrom: i to: currentLanes->size() color: (*it)->index()]];
[lines addObject: [PBGitGraphLine lowerLineFrom: currentLanes->size() to: currentLanes->size() color: (*it)->index()]];
}
}
// For existing columns, we always just continue straight down
// ^^ I don't know what that means anymore :(
if (currentLane)
[lines addObject:[PBGitGraphLine lowerLineFrom:newPos to:newPos color: currentLane->index()]];
else
[lines addObject:[PBGitGraphLine lowerLineFrom:newPos to:newPos color: 0]];
}
}
//Add your own parents
// If we already did the first parent, don't do so again
if (!didFirst && currentLanes->size() < MAX_LANES) {
PBGitLane *newLane = new PBGitLane([commit.parents objectAtIndex:0]);
currentLanes->push_back(newLane);
newPos = currentLanes->size();
[lines addObject:[PBGitGraphLine lowerLineFrom: newPos to: newPos color: newLane->index()]];
}
// Add all other parents
// If we add at least one parent, we can go back a single column.
// This boolean will tell us if that happened
BOOL addedParent = NO;
for (NSString *parent in [commit.parents subarrayWithRange:NSMakeRange(1, [commit.parents count] -1)]) {
int i = 0;
BOOL was_displayed = NO;
std::vector<PBGitLane *>::iterator it = currentLanes->begin();
for (; it < currentLanes->end(); ++it) {
i++;
if ((*it)->isCommit(parent)) {
[lines addObject:[PBGitGraphLine lowerLineFrom: i to: newPos color: (*it)->index()]];
was_displayed = YES;
break;
}
}
if (was_displayed)
continue;
if (currentLanes->size() >= MAX_LANES)
break;
// Really add this parent
addedParent = YES;
PBGitLane *newLane = new PBGitLane(parent);
currentLanes->push_back(newLane);
[lines addObject:[PBGitGraphLine lowerLineFrom: currentLanes->size() to: newPos color: newLane->index()]];
}
previous = [[PBGraphCellInfo alloc] initWithPosition:newPos andLines:lines];
previous.sign = commit.sign;
// If a parent was added, we have room to not indent.
if (addedParent)
previous.numColumns = currentLanes->size() - 1;
else
previous.numColumns = currentLanes->size();
// Update the current lane to point to the new parent
if (currentLane && [commit.parents count] > 0 && ![[commit.parents objectAtIndex:0] isEqualToString:@""])
currentLane->setSha([commit.parents objectAtIndex:0]);
// else
// [currentLanes removeObject:currentLane];
delete previousLanes;
pl = currentLanes;
commit.lineInfo = previous;
}
- (void) finalize
{
[super finalize];
}
@end