/
NSString+HTML.m
737 lines (684 loc) · 26 KB
/
NSString+HTML.m
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//
// NSString+HTML.m
// CoreTextExtensions
//
// Created by Oliver Drobnik on 1/9/11.
// Copyright 2011 Drobnik.com. All rights reserved.
//
#import "NSString+HTML.h"
#import "DTCoreText.h"
static NSDictionary *entityLookup = nil;
static NSDictionary *entityReverseLookup = nil;
@implementation NSString (HTML)
- (NSUInteger)integerValueFromHex
{
NSUInteger result = 0;
sscanf([self UTF8String], "%x", &result);
return result;
}
- (BOOL)isNumeric
{
const char *s = [self UTF8String];
for (size_t i=0;i<strlen(s);i++)
{
if ((s[i]<'0' || s[i]>'9') && (s[i] != '.'))
{
return NO;
}
}
return YES;
}
- (float)percentValue
{
float result = 1;
sscanf([self UTF8String], "%f", &result);
return result/100.0f;
}
- (NSString *)stringByNormalizingWhitespace
{
NSInteger stringLength = [self length];
// reserve buffer, same size as input
unichar *_characters = calloc(stringLength, sizeof(unichar));
[self getCharacters:_characters range:NSMakeRange(0, stringLength)];
NSInteger outputLength = 0;
BOOL inWhite = NO;
// we output to the same buffer as the input was
for (NSInteger i = 0; i<stringLength; i++)
{
// c-array access is faster because it saves objc calls
unichar oneChar = _characters[i]; // [self characterAtIndex:i];
// of whitespace chars only output one space for first
if (IS_WHITESPACE(oneChar))
{
if (!inWhite)
{
_characters[outputLength] = 32;
outputLength++;
inWhite = YES;
}
}
else
{
// all other characters we simply copy
_characters[outputLength] = oneChar;
outputLength++;
inWhite = NO;
}
}
// convert to objC-String
NSString *retString = [NSString stringWithCharacters:_characters length:outputLength];
// free buffers
free(_characters);
return retString;
}
- (BOOL)hasPrefixCharacterFromSet:(NSCharacterSet *)characterSet
{
if (![self length])
{
return NO;
}
unichar firstChar = [self characterAtIndex:0];
return [characterSet characterIsMember:firstChar];
}
- (BOOL)hasSuffixCharacterFromSet:(NSCharacterSet *)characterSet
{
if (![self length])
{
return NO;
}
unichar lastChar = [self characterAtIndex:[self length]-1];
return [characterSet characterIsMember:lastChar];
}
- (NSString *)stringByAddingHTMLEntities
{
static dispatch_once_t predicate;
dispatch_once(&predicate, ^{
entityReverseLookup = [[NSDictionary alloc] initWithObjectsAndKeys:@""", [NSNumber numberWithInteger:0x22],
@"&", [NSNumber numberWithInteger:0x26],
@"'", [NSNumber numberWithInteger:0x27],
@"<", [NSNumber numberWithInteger:0x3c],
@">", [NSNumber numberWithInteger:0x3e],
@" ", [NSNumber numberWithInteger:0x00a0],
@"¡", [NSNumber numberWithInteger:0x00a1],
@"¢", [NSNumber numberWithInteger:0x00a2],
@"£", [NSNumber numberWithInteger:0x00a3],
@"¤", [NSNumber numberWithInteger:0x00a4],
@"¥", [NSNumber numberWithInteger:0x00a5],
@"¦", [NSNumber numberWithInteger:0x00a6],
@"§", [NSNumber numberWithInteger:0x00a7],
@"¨", [NSNumber numberWithInteger:0x00a8],
@"©", [NSNumber numberWithInteger:0x00a9],
@"ª", [NSNumber numberWithInteger:0x00aa],
@"«", [NSNumber numberWithInteger:0x00ab],
@"¬", [NSNumber numberWithInteger:0x00ac],
@"®", [NSNumber numberWithInteger:0x00ae],
@"¯", [NSNumber numberWithInteger:0x00af],
@"°", [NSNumber numberWithInteger:0x00b0],
@"±", [NSNumber numberWithInteger:0x00b1],
@"²", [NSNumber numberWithInteger:0x00b2],
@"³", [NSNumber numberWithInteger:0x00b3],
@"´", [NSNumber numberWithInteger:0x00b4],
@"µ", [NSNumber numberWithInteger:0x00b5],
@"¶", [NSNumber numberWithInteger:0x00b6],
@"·", [NSNumber numberWithInteger:0x00b7],
@"¸", [NSNumber numberWithInteger:0x00b8],
@"¹", [NSNumber numberWithInteger:0x00b9],
@"º", [NSNumber numberWithInteger:0x00ba],
@"»", [NSNumber numberWithInteger:0x00bb],
@"¼", [NSNumber numberWithInteger:0x00bc],
@"½", [NSNumber numberWithInteger:0x00bd],
@"¾", [NSNumber numberWithInteger:0x00be],
@"¿", [NSNumber numberWithInteger:0x00bf],
@"À", [NSNumber numberWithInteger:0x00c0],
@"Á", [NSNumber numberWithInteger:0x00c1],
@"Â", [NSNumber numberWithInteger:0x00c2],
@"Ã", [NSNumber numberWithInteger:0x00c3],
@"Ä", [NSNumber numberWithInteger:0x00c4],
@"Å", [NSNumber numberWithInteger:0x00c5],
@"Æ", [NSNumber numberWithInteger:0x00c6],
@"Ç", [NSNumber numberWithInteger:0x00c7],
@"È", [NSNumber numberWithInteger:0x00c8],
@"É", [NSNumber numberWithInteger:0x00c9],
@"Ê", [NSNumber numberWithInteger:0x00ca],
@"Ë", [NSNumber numberWithInteger:0x00cb],
@"Ì", [NSNumber numberWithInteger:0x00cc],
@"Í", [NSNumber numberWithInteger:0x00cd],
@"Î", [NSNumber numberWithInteger:0x00ce],
@"Ï", [NSNumber numberWithInteger:0x00cf],
@"Ð", [NSNumber numberWithInteger:0x00d0],
@"Ñ", [NSNumber numberWithInteger:0x00d1],
@"Ò", [NSNumber numberWithInteger:0x00d2],
@"Ó", [NSNumber numberWithInteger:0x00d3],
@"Ô", [NSNumber numberWithInteger:0x00d4],
@"Õ", [NSNumber numberWithInteger:0x00d5],
@"Ö", [NSNumber numberWithInteger:0x00d6],
@"×", [NSNumber numberWithInteger:0x00d7],
@"Ø", [NSNumber numberWithInteger:0x00d8],
@"Ù", [NSNumber numberWithInteger:0x00d9],
@"Ú", [NSNumber numberWithInteger:0x00da],
@"Û", [NSNumber numberWithInteger:0x00db],
@"Ü", [NSNumber numberWithInteger:0x00dc],
@"Ý", [NSNumber numberWithInteger:0x00dd],
@"Þ", [NSNumber numberWithInteger:0x00de],
@"ß", [NSNumber numberWithInteger:0x00df],
@"à", [NSNumber numberWithInteger:0x00e0],
@"á", [NSNumber numberWithInteger:0x00e1],
@"â", [NSNumber numberWithInteger:0x00e2],
@"ã", [NSNumber numberWithInteger:0x00e3],
@"ä", [NSNumber numberWithInteger:0x00e4],
@"å", [NSNumber numberWithInteger:0x00e5],
@"æ", [NSNumber numberWithInteger:0x00e6],
@"ç", [NSNumber numberWithInteger:0x00e7],
@"è", [NSNumber numberWithInteger:0x00e8],
@"é", [NSNumber numberWithInteger:0x00e9],
@"ê", [NSNumber numberWithInteger:0x00ea],
@"ë", [NSNumber numberWithInteger:0x00eb],
@"ì", [NSNumber numberWithInteger:0x00ec],
@"í", [NSNumber numberWithInteger:0x00ed],
@"î", [NSNumber numberWithInteger:0x00ee],
@"ï", [NSNumber numberWithInteger:0x00ef],
@"ð", [NSNumber numberWithInteger:0x00f0],
@"ñ", [NSNumber numberWithInteger:0x00f1],
@"ò", [NSNumber numberWithInteger:0x00f2],
@"ó", [NSNumber numberWithInteger:0x00f3],
@"ô", [NSNumber numberWithInteger:0x00f4],
@"õ", [NSNumber numberWithInteger:0x00f5],
@"ö", [NSNumber numberWithInteger:0x00f6],
@"÷", [NSNumber numberWithInteger:0x00f7],
@"ø", [NSNumber numberWithInteger:0x00f8],
@"ù", [NSNumber numberWithInteger:0x00f9],
@"ú", [NSNumber numberWithInteger:0x00fa],
@"û", [NSNumber numberWithInteger:0x00fb],
@"ü", [NSNumber numberWithInteger:0x00fc],
@"ý", [NSNumber numberWithInteger:0x00fd],
@"þ", [NSNumber numberWithInteger:0x00fe],
@"ÿ", [NSNumber numberWithInteger:0x00ff],
@"Œ", [NSNumber numberWithInteger:0x0152],
@"œ", [NSNumber numberWithInteger:0x0153],
@"Š", [NSNumber numberWithInteger:0x0160],
@"š", [NSNumber numberWithInteger:0x0161],
@"Ÿ", [NSNumber numberWithInteger:0x0178],
@"ƒ", [NSNumber numberWithInteger:0x0192],
@"ˆ", [NSNumber numberWithInteger:0x02c6],
@"˜", [NSNumber numberWithInteger:0x02dc],
@"Γ", [NSNumber numberWithInteger:0x0393],
@"Δ", [NSNumber numberWithInteger:0x0394],
@"Θ", [NSNumber numberWithInteger:0x0398],
@"Λ", [NSNumber numberWithInteger:0x039b],
@"Ξ", [NSNumber numberWithInteger:0x039e],
@"Σ", [NSNumber numberWithInteger:0x03a3],
@"Υ", [NSNumber numberWithInteger:0x03a5],
@"Φ", [NSNumber numberWithInteger:0x03a6],
@"Ψ", [NSNumber numberWithInteger:0x03a8],
@"Ω", [NSNumber numberWithInteger:0x03a9],
@"α", [NSNumber numberWithInteger:0x03b1],
@"Α", [NSNumber numberWithInteger:0x0391],
@"β", [NSNumber numberWithInteger:0x03b2],
@"Β", [NSNumber numberWithInteger:0x0392],
@"γ", [NSNumber numberWithInteger:0x03b3],
@"δ", [NSNumber numberWithInteger:0x03b4],
@"ε", [NSNumber numberWithInteger:0x03b5],
@"Ε", [NSNumber numberWithInteger:0x0395],
@"ζ", [NSNumber numberWithInteger:0x03b6],
@"Ζ", [NSNumber numberWithInteger:0x0396],
@"η", [NSNumber numberWithInteger:0x03b7],
@"Η", [NSNumber numberWithInteger:0x0397],
@"θ", [NSNumber numberWithInteger:0x03b8],
@"ι", [NSNumber numberWithInteger:0x03b9],
@"Ι", [NSNumber numberWithInteger:0x0399],
@"κ", [NSNumber numberWithInteger:0x03ba],
@"Κ", [NSNumber numberWithInteger:0x039a],
@"λ", [NSNumber numberWithInteger:0x03bb],
@"μ", [NSNumber numberWithInteger:0x03bc],
@"Μ", [NSNumber numberWithInteger:0x039c],
@"ν", [NSNumber numberWithInteger:0x03bd],
@"Ν", [NSNumber numberWithInteger:0x039d],
@"ξ", [NSNumber numberWithInteger:0x03be],
@"ο", [NSNumber numberWithInteger:0x03bf],
@"Ο", [NSNumber numberWithInteger:0x039f],
@"π", [NSNumber numberWithInteger:0x03c0],
@"Π", [NSNumber numberWithInteger:0x03a0],
@"ρ", [NSNumber numberWithInteger:0x03c1],
@"Ρ", [NSNumber numberWithInteger:0x03a1],
@"ς", [NSNumber numberWithInteger:0x03c2],
@"σ", [NSNumber numberWithInteger:0x03c3],
@"τ", [NSNumber numberWithInteger:0x03c4],
@"Τ", [NSNumber numberWithInteger:0x03a4],
@"υ", [NSNumber numberWithInteger:0x03c5],
@"φ", [NSNumber numberWithInteger:0x03c6],
@"χ", [NSNumber numberWithInteger:0x03c7],
@"Χ", [NSNumber numberWithInteger:0x03a7],
@"ψ", [NSNumber numberWithInteger:0x03c8],
@"ω", [NSNumber numberWithInteger:0x03c9],
@"ϑ", [NSNumber numberWithInteger:0x03d1],
@"ϒ", [NSNumber numberWithInteger:0x03d2],
@"ϖ", [NSNumber numberWithInteger:0x03d6],
@" ", [NSNumber numberWithInteger:0x2002],
@" ", [NSNumber numberWithInteger:0x2003],
@" ", [NSNumber numberWithInteger:0x2009],
@"–", [NSNumber numberWithInteger:0x2013],
@"—", [NSNumber numberWithInteger:0x2014],
@"‘", [NSNumber numberWithInteger:0x2018],
@"’", [NSNumber numberWithInteger:0x2019],
@"‚", [NSNumber numberWithInteger:0x201a],
@"“", [NSNumber numberWithInteger:0x201c],
@"”", [NSNumber numberWithInteger:0x201d],
@"„", [NSNumber numberWithInteger:0x201e],
@"†", [NSNumber numberWithInteger:0x2020],
@"‡", [NSNumber numberWithInteger:0x2021],
@"•", [NSNumber numberWithInteger:0x2022],
@"…", [NSNumber numberWithInteger:0x2026],
@"‰", [NSNumber numberWithInteger:0x2030],
@"′", [NSNumber numberWithInteger:0x2032],
@"″", [NSNumber numberWithInteger:0x2033],
@"‹", [NSNumber numberWithInteger:0x2039],
@"›", [NSNumber numberWithInteger:0x203a],
@"‾", [NSNumber numberWithInteger:0x203e],
@"⁄", [NSNumber numberWithInteger:0x2044],
@"€", [NSNumber numberWithInteger:0x20ac],
@"ℑ", [NSNumber numberWithInteger:0x2111],
@"℘", [NSNumber numberWithInteger:0x2118],
@"ℜ", [NSNumber numberWithInteger:0x211c],
@"™", [NSNumber numberWithInteger:0x2122],
@"ℵ", [NSNumber numberWithInteger:0x2135],
@"←", [NSNumber numberWithInteger:0x2190],
@"↑", [NSNumber numberWithInteger:0x2191],
@"→", [NSNumber numberWithInteger:0x2192],
@"↓", [NSNumber numberWithInteger:0x2193],
@"↔", [NSNumber numberWithInteger:0x2194],
@"↵", [NSNumber numberWithInteger:0x21b5],
@"⇐", [NSNumber numberWithInteger:0x21d0],
@"⇑", [NSNumber numberWithInteger:0x21d1],
@"⇒", [NSNumber numberWithInteger:0x21d2],
@"⇓", [NSNumber numberWithInteger:0x21d3],
@"⇔", [NSNumber numberWithInteger:0x21d4],
@"∀", [NSNumber numberWithInteger:0x2200],
@"∂", [NSNumber numberWithInteger:0x2202],
@"∃", [NSNumber numberWithInteger:0x2203],
@"∅", [NSNumber numberWithInteger:0x2205],
@"∇", [NSNumber numberWithInteger:0x2207],
@"∈", [NSNumber numberWithInteger:0x2208],
@"∉", [NSNumber numberWithInteger:0x2209],
@"∋", [NSNumber numberWithInteger:0x220b],
@"∏", [NSNumber numberWithInteger:0x220f],
@"∑", [NSNumber numberWithInteger:0x2211],
@"−", [NSNumber numberWithInteger:0x2212],
@"∗", [NSNumber numberWithInteger:0x2217],
@"√", [NSNumber numberWithInteger:0x221a],
@"∝", [NSNumber numberWithInteger:0x221d],
@"∞", [NSNumber numberWithInteger:0x221e],
@"∠", [NSNumber numberWithInteger:0x2220],
@"∧", [NSNumber numberWithInteger:0x2227],
@"∨", [NSNumber numberWithInteger:0x2228],
@"∩", [NSNumber numberWithInteger:0x2229],
@"∪", [NSNumber numberWithInteger:0x222a],
@"∫", [NSNumber numberWithInteger:0x222b],
@"∴", [NSNumber numberWithInteger:0x2234],
@"∼", [NSNumber numberWithInteger:0x223c],
@"≅", [NSNumber numberWithInteger:0x2245],
@"≈", [NSNumber numberWithInteger:0x2248],
@"≠", [NSNumber numberWithInteger:0x2260],
@"≡", [NSNumber numberWithInteger:0x2261],
@"≤", [NSNumber numberWithInteger:0x2264],
@"≥", [NSNumber numberWithInteger:0x2265],
@"⊂", [NSNumber numberWithInteger:0x2282],
@"⊃", [NSNumber numberWithInteger:0x2283],
@"⊄", [NSNumber numberWithInteger:0x2284],
@"⊆", [NSNumber numberWithInteger:0x2286],
@"⊇", [NSNumber numberWithInteger:0x2287],
@"⊕", [NSNumber numberWithInteger:0x2295],
@"⊗", [NSNumber numberWithInteger:0x2297],
@"⊥", [NSNumber numberWithInteger:0x22a5],
@"⋅", [NSNumber numberWithInteger:0x22c5],
@"⌈", [NSNumber numberWithInteger:0x2308],
@"⌉", [NSNumber numberWithInteger:0x2309],
@"⌊", [NSNumber numberWithInteger:0x230a],
@"⌋", [NSNumber numberWithInteger:0x230b],
@"⟨", [NSNumber numberWithInteger:0x27e8],
@"⟩", [NSNumber numberWithInteger:0x27e9],
@"◊", [NSNumber numberWithInteger:0x25ca],
@"♠", [NSNumber numberWithInteger:0x2660],
@"♣", [NSNumber numberWithInteger:0x2663],
@"♥", [NSNumber numberWithInteger:0x2665],
@"♦", [NSNumber numberWithInteger:0x2666],
@"<br />", [NSNumber numberWithInteger:0x2028],
nil];
});
NSMutableString *tmpString = [NSMutableString string];
for (NSUInteger i = 0; i<[self length]; i++)
{
unichar oneChar = [self characterAtIndex:i];
NSNumber *subKey = [NSNumber numberWithInteger:oneChar];
NSString *entity = [entityReverseLookup objectForKey:subKey];
if (entity)
{
[tmpString appendString:entity];
}
else
{
if (oneChar<=255)
{
[tmpString appendFormat:@"%C", oneChar];
}
else
{
[tmpString appendFormat:@"&#%d;", oneChar];
}
}
}
return tmpString;
}
- (NSString *)stringByReplacingHTMLEntities
{
static dispatch_once_t predicate;
dispatch_once(&predicate, ^{
entityLookup = [[NSDictionary alloc] initWithObjectsAndKeys:@"\x22", @"quot",
@"\x26", @"amp",
@"\x27", @"apos",
@"\x3c", @"lt",
@"\x3e", @"gt",
@"\u00a0", @"nbsp",
@"\u00a1", @"iexcl",
@"\u00a2", @"cent",
@"\u00a3", @"pound",
@"\u00a4", @"curren",
@"\u00a5", @"yen",
@"\u00a6", @"brvbar",
@"\u00a7", @"sect",
@"\u00a8", @"uml",
@"\u00a9", @"copy",
@"\u00aa", @"ordf",
@"\u00ab", @"laquo",
@"\u00ac", @"not",
@"\u00ae", @"reg",
@"\u00af", @"macr",
@"\u00b0", @"deg",
@"\u00b1", @"plusmn",
@"\u00b2", @"sup2",
@"\u00b3", @"sup3",
@"\u00b4", @"acute",
@"\u00b5", @"micro",
@"\u00b6", @"para",
@"\u00b7", @"middot",
@"\u00b8", @"cedil",
@"\u00b9", @"sup1",
@"\u00ba", @"ordm",
@"\u00bb", @"raquo",
@"\u00bc", @"frac14",
@"\u00bd", @"frac12",
@"\u00be", @"frac34",
@"\u00bf", @"iquest",
@"\u00c0", @"Agrave",
@"\u00c1", @"Aacute",
@"\u00c2", @"Acirc",
@"\u00c3", @"Atilde",
@"\u00c4", @"Auml",
@"\u00c5", @"Aring",
@"\u00c6", @"AElig",
@"\u00c7", @"Ccedil",
@"\u00c8", @"Egrave",
@"\u00c9", @"Eacute",
@"\u00ca", @"Ecirc",
@"\u00cb", @"Euml",
@"\u00cc", @"Igrave",
@"\u00cd", @"Iacute",
@"\u00ce", @"Icirc",
@"\u00cf", @"Iuml",
@"\u00d0", @"ETH",
@"\u00d1", @"Ntilde",
@"\u00d2", @"Ograve",
@"\u00d3", @"Oacute",
@"\u00d4", @"Ocirc",
@"\u00d5", @"Otilde",
@"\u00d6", @"Ouml",
@"\u00d7", @"times",
@"\u00d8", @"Oslash",
@"\u00d9", @"Ugrave",
@"\u00da", @"Uacute",
@"\u00db", @"Ucirc",
@"\u00dc", @"Uuml",
@"\u00dd", @"Yacute",
@"\u00de", @"THORN",
@"\u00df", @"szlig",
@"\u00e0", @"agrave",
@"\u00e1", @"aacute",
@"\u00e2", @"acirc",
@"\u00e3", @"atilde",
@"\u00e4", @"auml",
@"\u00e5", @"aring",
@"\u00e6", @"aelig",
@"\u00e7", @"ccedil",
@"\u00e8", @"egrave",
@"\u00e9", @"eacute",
@"\u00ea", @"ecirc",
@"\u00eb", @"euml",
@"\u00ec", @"igrave",
@"\u00ed", @"iacute",
@"\u00ee", @"icirc",
@"\u00ef", @"iuml",
@"\u00f0", @"eth",
@"\u00f1", @"ntilde",
@"\u00f2", @"ograve",
@"\u00f3", @"oacute",
@"\u00f4", @"ocirc",
@"\u00f5", @"otilde",
@"\u00f6", @"ouml",
@"\u00f7", @"divide",
@"\u00f8", @"oslash",
@"\u00f9", @"ugrave",
@"\u00fa", @"uacute",
@"\u00fb", @"ucirc",
@"\u00fc", @"uuml",
@"\u00fd", @"yacute",
@"\u00fe", @"thorn",
@"\u00ff", @"yuml",
@"\u0152", @"OElig",
@"\u0153", @"oelig",
@"\u0160", @"Scaron",
@"\u0161", @"scaron",
@"\u0178", @"Yuml",
@"\u0192", @"fnof",
@"\u02c6", @"circ",
@"\u02dc", @"tilde",
@"\u0393", @"Gamma",
@"\u0394", @"Delta",
@"\u0398", @"Theta",
@"\u039b", @"Lambda",
@"\u039e", @"Xi",
@"\u03a3", @"Sigma",
@"\u03a5", @"Upsilon",
@"\u03a6", @"Phi",
@"\u03a8", @"Psi",
@"\u03a9", @"Omega",
@"\u03b1", @"alpha",
@"\u0391", @"Alpha",
@"\u03b2", @"beta",
@"\u0392", @"Beta",
@"\u03b3", @"gamma",
@"\u03b4", @"delta",
@"\u03b5", @"epsilon",
@"\u0395", @"Epsilon",
@"\u03b6", @"zeta",
@"\u0396", @"Zeta",
@"\u03b7", @"eta",
@"\u0397", @"Eta",
@"\u03b8", @"theta",
@"\u03b9", @"iota",
@"\u0399", @"Iota",
@"\u03ba", @"kappa",
@"\u039a", @"Kappa",
@"\u03bb", @"lambda",
@"\u03bc", @"mu",
@"\u039c", @"Mu",
@"\u03bd", @"nu",
@"\u039d", @"Nu",
@"\u03be", @"xi",
@"\u03bf", @"omicron",
@"\u039f", @"Omicron",
@"\u03c0", @"pi",
@"\u03a0", @"Pi",
@"\u03c1", @"rho",
@"\u03a1", @"Rho",
@"\u03c2", @"sigmaf",
@"\u03c3", @"sigma",
@"\u03c4", @"tau",
@"\u03a4", @"Tau",
@"\u03c5", @"upsilon",
@"\u03c6", @"phi",
@"\u03c7", @"chi",
@"\u03a7", @"Chi",
@"\u03c8", @"psi",
@"\u03c9", @"omega",
@"\u03d1", @"thetasym",
@"\u03d2", @"upsih",
@"\u03d6", @"piv",
@"\u2002", @"ensp",
@"\u2003", @"emsp",
@"\u2009", @"thinsp",
@"\u2013", @"ndash",
@"\u2014", @"mdash",
@"\u2018", @"lsquo",
@"\u2019", @"rsquo",
@"\u201a", @"sbquo",
@"\u201c", @"ldquo",
@"\u201d", @"rdquo",
@"\u201e", @"bdquo",
@"\u2020", @"dagger",
@"\u2021", @"Dagger",
@"\u2022", @"bull",
@"\u2026", @"hellip",
@"\u2030", @"permil",
@"\u2032", @"prime",
@"\u2033", @"Prime",
@"\u2039", @"lsaquo",
@"\u203a", @"rsaquo",
@"\u203e", @"oline",
@"\u2044", @"frasl",
@"\u20ac", @"euro",
@"\u2111", @"image",
@"\u2118", @"weierp",
@"\u211c", @"real",
@"\u2122", @"trade",
@"\u2135", @"alefsym",
@"\u2190", @"larr",
@"\u2191", @"uarr",
@"\u2192", @"rarr",
@"\u2193", @"darr",
@"\u2194", @"harr",
@"\u21b5", @"crarr",
@"\u21d0", @"lArr",
@"\u21d1", @"uArr",
@"\u21d2", @"rArr",
@"\u21d3", @"dArr",
@"\u21d4", @"hArr",
@"\u2200", @"forall",
@"\u2202", @"part",
@"\u2203", @"exist",
@"\u2205", @"empty",
@"\u2207", @"nabla",
@"\u2208", @"isin",
@"\u2209", @"notin",
@"\u220b", @"ni",
@"\u220f", @"prod",
@"\u2211", @"sum",
@"\u2212", @"minus",
@"\u2217", @"lowast",
@"\u221a", @"radic",
@"\u221d", @"prop",
@"\u221e", @"infin",
@"\u2220", @"ang",
@"\u2227", @"and",
@"\u2228", @"or",
@"\u2229", @"cap",
@"\u222a", @"cup",
@"\u222b", @"int",
@"\u2234", @"there4",
@"\u223c", @"sim",
@"\u2245", @"cong",
@"\u2248", @"asymp",
@"\u2260", @"ne",
@"\u2261", @"equiv",
@"\u2264", @"le",
@"\u2265", @"ge",
@"\u2282", @"sub",
@"\u2283", @"sup",
@"\u2284", @"nsub",
@"\u2286", @"sube",
@"\u2287", @"supe",
@"\u2295", @"oplus",
@"\u2297", @"otimes",
@"\u22a5", @"perp",
@"\u22c5", @"sdot",
@"\u2308", @"lceil",
@"\u2309", @"rceil",
@"\u230a", @"lfloor",
@"\u230b", @"rfloor",
@"\u27e8", @"lang",
@"\u27e9", @"rang",
@"\u25ca", @"loz",
@"\u2660", @"spades",
@"\u2663", @"clubs",
@"\u2665", @"hearts",
@"\u2666", @"diams",
nil];
});
NSScanner *scanner = [NSScanner scannerWithString:self];
[scanner setCharactersToBeSkipped:nil];
NSMutableString *output = [NSMutableString string];
while (![scanner isAtEnd])
{
NSString *scanned = nil;
if ([scanner scanUpToString:@"&" intoString:&scanned])
{
[output appendString:scanned];
}
if ([scanner scanString:@"&" intoString:NULL])
{
NSString *afterAmpersand = nil;
if ([scanner scanUpToString:@";" intoString:&afterAmpersand])
{
if ([scanner scanString:@";" intoString:NULL])
{
if ([afterAmpersand hasPrefix:@"#"] && [afterAmpersand length]<=6)
{
NSInteger i = [[afterAmpersand substringFromIndex:1] integerValue];
[output appendFormat:@"%C", i];
}
else
{
NSString *converted = [entityLookup objectForKey:afterAmpersand];
if (converted)
{
[output appendString:converted];
}
else
{
// not a valid sequence
[output appendString:@"&"];
[output appendString:afterAmpersand];
[output appendString:@";"];
}
}
}
else
{
// no semicolon
[output appendString:@"&"];
[output appendString:afterAmpersand];
}
}
}
}
return [NSString stringWithString:output];
}
#pragma mark Utility
+ (NSString *)guid
{
CFUUIDRef uuid = CFUUIDCreate(NULL);
CFStringRef cfStr = CFUUIDCreateString(NULL, uuid);
NSString *ret = [NSString stringWithString:CFBridgingRelease(cfStr)];
CFRelease(uuid);
// CFRelease(cfStr);
return ret;
}
@end