From a8bd15e9b46ac61668476e8d84f12768c1bd8d14 Mon Sep 17 00:00:00 2001
From: Brent Simmons <brent@ranchero.com>
Date: Tue, 26 Dec 2017 16:17:57 -0800
Subject: [PATCH] =?UTF-8?q?Add=20method=20to=20convert=20HTML=20to=20plain?=
 =?UTF-8?q?=20text=20suitable=20for=20copying=20to=20text-based=20apps.=20?=
 =?UTF-8?q?It=20could=20be=20much=20improved,=20but=20it=E2=80=99s=20bette?=
 =?UTF-8?q?r=20than=20nothing=20for=20right=20now.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Frameworks/RSCore/RSCore/NSString+RSCore.h |  1 +
 Frameworks/RSCore/RSCore/NSString+RSCore.m | 43 ++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/Frameworks/RSCore/RSCore/NSString+RSCore.h b/Frameworks/RSCore/RSCore/NSString+RSCore.h
index 1f8e9354c..1a454fa89 100755
--- a/Frameworks/RSCore/RSCore/NSString+RSCore.h
+++ b/Frameworks/RSCore/RSCore/NSString+RSCore.h
@@ -59,6 +59,7 @@ typedef struct {
 - (NSString *)rs_stringByStrippingSuffix:(NSString *)suffix caseSensitive:(BOOL)caseSensitive;
 
 - (NSString *)rs_stringByStrippingHTML:(NSUInteger)maxCharacters;
+- (NSString *)rs_stringByConvertingToPlainText;
 
 /*Filename from path, file URL string, or external URL string.*/
 
diff --git a/Frameworks/RSCore/RSCore/NSString+RSCore.m b/Frameworks/RSCore/RSCore/NSString+RSCore.m
index c28a7e9c0..9e2ed073d 100755
--- a/Frameworks/RSCore/RSCore/NSString+RSCore.m
+++ b/Frameworks/RSCore/RSCore/NSString+RSCore.m
@@ -301,6 +301,49 @@ NSString *RSStringReplaceAll(NSString *stringToSearch, NSString *searchFor, NSSt
 	return (__bridge_transfer NSString *)s;
 }
 
+- (NSString *)rs_stringByConvertingToPlainText {
+
+	if (![self containsString:@"<"]) {
+		return self;
+	}
+
+	NSMutableString *preflightedCopy = [self mutableCopy];
+	[preflightedCopy replaceOccurrencesOfString:@"<blockquote>" withString:@"\n\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"</blockquote>" withString:@"\n\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"<p>" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"</p>" withString:@"\n\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"<div>" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"</div>" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"<br>" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"<br />" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"<br/>" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+	[preflightedCopy replaceOccurrencesOfString:@"</li>" withString:@"\n" options:NSCaseInsensitiveSearch range:NSMakeRange(0, preflightedCopy.length)];
+
+	CFMutableStringRef s = CFStringCreateMutable(kCFAllocatorDefault, (CFIndex)preflightedCopy.length);
+	NSUInteger level = 0;
+
+	for (NSUInteger i = 0; i < preflightedCopy.length; i++) {
+
+		unichar ch = [preflightedCopy characterAtIndex:i];
+
+		if (ch == '<') {
+			level++;
+		}
+		else if (ch == '>') {
+			level--;
+		}
+		else if (level == 0) {
+			CFStringAppendCharacters(s, &ch, 1);
+		}
+	}
+
+	NSMutableString *plainTextString = [(__bridge_transfer NSString *)s mutableCopy];
+	while ([plainTextString rangeOfString:@"\n\n\n"].location != NSNotFound) {
+		[plainTextString replaceOccurrencesOfString:@"\n\n\n" withString:@"\n\n" options:NSLiteralSearch range:NSMakeRange(0, plainTextString.length)];
+	}
+
+	return plainTextString;
+}
 
 - (NSString *)rs_filename {