Log all fonts & colors of view

debug_functions.h

void logFonts(UIView* view);
void logColors(UIView* view);

debug_functions.m

// https://github.com/jlawton/UIColor-HTMLColors
#import "UIColor+HTMLColors.h"
// https://github.com/robb/Underscore.m
#import "Underscore.h"
#define _ Underscore

NSMutableSet* findFonts(UIView* view)
{
    NSMutableSet* fonts = [NSMutableSet set];
    for (UIView* subview in view.subviews) {
        if ([subview respondsToSelector:@selector(font)]) {
            [fonts addObject:[subview performSelector:@selector(font)]];
        }
        [fonts unionSet:findFonts(subview)];
    }
    return fonts;
}

void logFonts(UIView* view)
{
    NSMutableSet* fonts = findFonts(view);

    NSArray* sortedFonts = [[fonts allObjects] sortedArrayUsingComparator:^NSComparisonResult (UIFont* a, UIFont* b) {
        return a.pointSize >= b.pointSize;
    }];

    NSArray* boldFonts = _.array(sortedFonts).filter(^BOOL (UIFont* font) {
        UIFontDescriptor* descriptor = font.fontDescriptor;
        UIFontDescriptorSymbolicTraits traits = descriptor.symbolicTraits;
        BOOL isBold = (traits & UIFontDescriptorTraitBold);
        return isBold;
    }).unwrap;

    NSArray* regularFonts = _.array(sortedFonts).filter(^BOOL (UIFont* font) {
        UIFontDescriptor* descriptor = font.fontDescriptor;
        UIFontDescriptorSymbolicTraits traits = descriptor.symbolicTraits;
        BOOL isBold = (traits & UIFontDescriptorTraitBold);
        return !isBold;
    }).unwrap;

    NSLog(@"\n\nfound %li bold fonts %@\n\n", (unsigned long)boldFonts.count, boldFonts);
    NSLog(@"\n\nfound %li regular fonts %@\n\n", (unsigned long)regularFonts.count, regularFonts);
}

#pragma mark - Colors

NSMutableSet* findColors(UIView* view)
{
    NSMutableSet* colors = [NSMutableSet set];
    UIColor* color;
    for (UIView* subview in view.subviews) {
        if ([subview respondsToSelector:@selector(backgroundColor)]) {
            color = subview.backgroundColor;
            if (color)
                [colors addObject:color];
        }
        if ([subview respondsToSelector:@selector(fillColor)]) {
            color = [subview performSelector:@selector(fillColor)];
            if (color)
                [colors addObject:color];
        }
        if ([subview respondsToSelector:@selector(textColor)]) {
            color = [subview performSelector:@selector(textColor)];
            if (color)
                [colors addObject:color];
        }
        [colors unionSet:findColors(subview)];
    }
    return colors;
}

void logColors(UIView* view)
{
    NSSet* colors = findColors(view);
    NSArray* cssColorStrings = _.array([colors allObjects]).map(^NSString* (UIColor* color) {
        return [[color hexStringValue] lowercaseString];
    }).uniq.unwrap;
    NSLog(@"\n\nfound %li colors %@\n\n", (unsigned long)cssColorStrings.count, cssColorStrings);
}