command line tool to convert plist with hex color values to Os X color list

themedPlistToColorList

//
//  main.m
//  ColorListFromPList
//
//  Created by Christopher Private on 7/12/15.
//  Copyright (c) 2015 Flouu. All rights reserved.
//

@import AppKit;

static NSColor *colorWithHexString(NSString *hexString);
static BOOL isValidHex(NSString *hexString);
static BOOL stringIsEmpty(NSString *s);
NSArray *colorsFromDictionary(NSDictionary *dictionary, NSString *name);

int main(int argc, const char * argv[]) {
    @autoreleasepool {

        NSString *path = [NSString stringWithUTF8String:argv[1]];
        NSFileManager *fileManager = [NSFileManager defaultManager];
        ;
        if (![fileManager fileExistsAtPath: path]) {
            NSLog(@"no file at %@", path);
            return 0;
        }
        NSMutableDictionary *plistDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile: path];
        NSString *extension = [[fileManager displayNameAtPath:path] componentsSeparatedByString:@"."].lastObject;

        if (![extension isEqualToString:@"plist"]) {
            return 0;
        }

        NSString *pListName = [[fileManager displayNameAtPath:path] componentsSeparatedByString:@"."].firstObject;

        NSArray *colors = colorsFromDictionary(plistDictionary, @"");
        NSSortDescriptor *descriptor = [[NSSortDescriptor alloc] initWithKey:@"keyName"  ascending:NO];
        colors = [colors sortedArrayUsingDescriptors:@[descriptor]];

        NSColorList *colorList = [[NSColorList alloc] initWithName:pListName];
        for (NSDictionary *dict in colors) {
            [colorList insertColor:dict[@"color"] key:dict[@"keyName"] atIndex:0];
        }
        [colorList writeToFile:fileManager.currentDirectoryPath];

    }
    return 0;
}

NSArray *colorsFromDictionary(NSDictionary *dictionary, NSString *name) {
    NSMutableArray *array = [NSMutableArray new];
    for (NSString *key in dictionary) {
        if (isValidHex(dictionary[key])) {
            NSString *newColorName = (name.length) ? [NSString stringWithFormat:@"%@-%@", name, key] : key;
            [array addObject:@{@"keyName" : newColorName, @"color" : colorWithHexString(dictionary[key])}];
        } else if ([dictionary[key] isKindOfClass:[NSDictionary class]]) {
            [array addObjectsFromArray:colorsFromDictionary(dictionary[key], key)];
        }
    }
    return [NSArray arrayWithArray:array];
}

static BOOL isValidHex(NSString *hexString) {
    if (![hexString isKindOfClass:[NSString class]]) {
        return NO;
    }
    if (stringIsEmpty(hexString)) {
        return NO;
    }
    NSMutableString *s = [hexString mutableCopy];
    [s replaceOccurrencesOfString:@"#" withString:@"" options:0 range:NSMakeRange(0, [hexString length])];
    if (s.length != 6) {
        return NO;
    }
    CFStringTrimWhitespace((__bridge CFMutableStringRef)s);

    NSString *redString = [s substringToIndex:2];
    NSString *greenString = [s substringWithRange:NSMakeRange(2, 2)];
    NSString *blueString = [s substringWithRange:NSMakeRange(4, 2)];

    unsigned int red = 0, green = 0, blue = 0;
    [[NSScanner scannerWithString:redString] scanHexInt:&red];
    [[NSScanner scannerWithString:greenString] scanHexInt:&green];
    [[NSScanner scannerWithString:blueString] scanHexInt:&blue];

    for (NSNumber *number in @[@(red), @(green), @(blue)]) {
        if (number.intValue < 0 || number.intValue > 255) {
            NSLog(@"bad string %@", hexString);
            return NO;
        }
    }
    return YES;
}

static NSColor *colorWithHexString(NSString *hexString) {

    /*Picky. Crashes by design.*/

    if (stringIsEmpty(hexString)) {
        return [NSColor lightGrayColor];
    }

    NSMutableString *s = [hexString mutableCopy];
    [s replaceOccurrencesOfString:@"#" withString:@"" options:0 range:NSMakeRange(0, [hexString length])];
    CFStringTrimWhitespace((__bridge CFMutableStringRef)s);

    NSString *redString = [s substringToIndex:2];
    NSString *greenString = [s substringWithRange:NSMakeRange(2, 2)];
    NSString *blueString = [s substringWithRange:NSMakeRange(4, 2)];

    unsigned int red = 0, green = 0, blue = 0;
    [[NSScanner scannerWithString:redString] scanHexInt:&red];
    [[NSScanner scannerWithString:greenString] scanHexInt:&green];
    [[NSScanner scannerWithString:blueString] scanHexInt:&blue];

    return [NSColor colorWithRed:(CGFloat)red/255.0f green:(CGFloat)green/255.0f blue:(CGFloat)blue/255.0f alpha:1.0f];
}

static BOOL stringIsEmpty(NSString *s) {
    return s == nil || [s length] == 0;
}