Make the revlist parsing more robust

This uses an NSMutableArray to increase the currentLine if the buffer is
full. This prevents very long messages from breaking the parsing.
If we cannot parse the log line, simple ignore it.

PBGitRepository.m

@@ -80,17 +80,32 @@ static NSString* gitPath = @"/usr/bin/env";
 
 	int fd = [handle fileDescriptor];
 	FILE* f = fdopen(fd, "r");
-	char buffer[2050];
-	buffer[2049] = 0;
+	int BUFFERSIZE = 2048;
+	char buffer[BUFFERSIZE];
+	buffer[BUFFERSIZE - 2] = 0;
 	
 	char* l;
 	int num = 0;
-	while (l = fgets(buffer, 2048, f)) {
-		NSString* currentLine = [NSString stringWithCString:(const char *)l encoding:NSUTF8StringEncoding];
-		if ([currentLine length] == 0)
-			currentLine = [NSString stringWithCString:(const char *)l encoding:NSASCIIStringEncoding];
+	NSMutableString* currentLine = [NSMutableString string];
+	while (l = fgets(buffer, BUFFERSIZE, f)) {
+		NSString *s = [NSString stringWithCString:(const char *)l encoding:NSUTF8StringEncoding];
+		if ([s length] == 0)
+			s = [NSString stringWithCString:(const char *)l encoding:NSASCIIStringEncoding];
+		[currentLine appendString: s];
+		 
+		// If buffer is full, we go for another round
+		if (buffer[BUFFERSIZE - 2] != 0) {
+			//NSLog(@"Line too long!");
+			buffer[BUFFERSIZE - 2] = 0;
+			continue;
+		}
+		
+		// If we are here, we currentLine is a full line.
 		NSArray* components = [currentLine componentsSeparatedByString:@"\01"];
-
+		if ([components count] < 4) {
+			NSLog(@"Can't split string: %@", currentLine);
+			continue;
+		}
 		PBGitCommit* newCommit = [[PBGitCommit alloc] initWithRepository: self andSha: [components objectAtIndex:0]];
 		newCommit.subject = [components objectAtIndex:2];
 		newCommit.author = [components objectAtIndex:1];
@@ -100,6 +115,7 @@ static NSString* gitPath = @"/usr/bin/env";
 		num++;
 		if (num % 10000 == 0)
 			[self performSelectorOnMainThread:@selector(setCommits:) withObject:newArray waitUntilDone:NO];
+		currentLine = [NSMutableString string];
 	}
 
 	[self performSelectorOnMainThread:@selector(setCommits:) withObject:newArray waitUntilDone:YES];