Stupid command line tool that prints log files colored with XcodeColors

main.m

//  Created by DanSkeel on 15.06.15.

// How to:
// Create a command line tool project in xcode and paste this into main.m
// Provide path to log file in `filePath` var
// Run and see colored log file in console output

#import <Foundation/Foundation.h>

#include <stdio.h>

// Taken from http://stackoverflow.com/a/1045440/991816

NSString *readLineAsNSString(FILE *file) {
    char buffer[4096];
    
    // tune this capacity to your liking -- larger buffer sizes will be faster, but
    // use more memory
    NSMutableString *result = [NSMutableString stringWithCapacity:256];
    
    // Read up to 4095 non-newline characters, then read and discard the newline
    int charsRead;
    do
    {
        if(fscanf(file, "%4095[^\n]%n%*c", buffer, &charsRead) == 1)
            [result appendFormat:@"%s", buffer];
        else
            break;
    } while(charsRead == 4095);
    
    return result;
}

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        
        // file path to txt file that contains logs colored XcodeColors special escape sequences
        // XcodeColors: https://github.com/robbiehanson/XcodeColors
        char *filePath = "FULL PATH TO LOG FILE";
        
        setenv("XcodeColors", "YES", 0);
        FILE *file = fopen(filePath, "r");
        while(!feof(file))
        {
            NSString *line = readLineAsNSString(file);
            NSLog(@"%@", line);
        }
        fclose(file);
    }
    return 0;
}