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NSString+PDStringAdditions.m
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//
// NSString+PDStringAdditions.m
// SproutedUtilities
//
// Created by Philip Dow on 5/30/06.
// Copyright Sprouted. All rights reserved.
// All inquiries should be directed to [email protected]
//
#import <SproutedUtilities/NSString+PDStringAdditions.h>
#import <SproutedUtilities/NSMutableString+PDAdditions.h>
#include <openssl/md5.h>
static NSString *htmlFrame = @"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n\t<title>%@</title>\n\t<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n\t<meta name=\"Generator\" content=\"Cocoa HTML Writer\" />\n\t<meta name=\"CocoaVersion\" content=\"824.42\" />\n</head>\n<body>\n%@</body>\n</html>\n";
enum {
kNumberType,
kStringType,
kPeriodType
};
int SUGetCharType(NSString *character);
NSArray *SUSplitVersionString(NSString *version);
#pragma mark -
int SUGetCharType(NSString *character)
{
if ([character isEqualToString:@"."]) {
return kPeriodType;
} else if ([character isEqualToString:@"0"] || [character intValue] != 0) {
return kNumberType;
} else {
return kStringType;
}
}
NSArray *SUSplitVersionString(NSString *version)
{
NSString *character;
NSMutableString *s;
int i, n, oldType, newType;
NSMutableArray *parts = [NSMutableArray array];
if ([version length] == 0) {
// Nothing to do here
return parts;
}
s = [[[version substringToIndex:1] mutableCopy] autorelease];
oldType = SUGetCharType(s);
n = [version length] - 1;
for (i = 1; i <= n; ++i) {
character = [version substringWithRange:NSMakeRange(i, 1)];
newType = SUGetCharType(character);
if (oldType != newType || oldType == kPeriodType) {
// We've reached a new segment
NSString *aPart = [[NSString alloc] initWithString:s];
[parts addObject:aPart];
[aPart release];
[s setString:character];
} else {
// Add character to string and continue
[s appendString:character];
}
oldType = newType;
}
// Add the last part onto the array
[parts addObject:[NSString stringWithString:s]];
return parts;
}
#pragma mark -
@implementation NSString (PDStringAdditions)
- (BOOL) matchesRegex:(NSString*)regex
{
NSPredicate *regexPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
return [regexPredicate evaluateWithObject:self];
}
- (BOOL) regexMatches:(NSString*)aString
{
NSPredicate *regexPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", self];
return [regexPredicate evaluateWithObject:aString];
}
#pragma mark -
- (BOOL) isWellformedURL
{
// right now the method only checks for http:// links with any text after the http://
// that can be initialized by nsurl
static NSString *httpScheme = @"http://";
if ( [self rangeOfString:httpScheme options:NSCaseInsensitiveSearch].location == 0 )
return ( [self length] > [httpScheme length] && ( [NSURL URLWithString:self] != nil ) );
else return NO;
}
- (BOOL) isOnlyWhitespace
{
int i;
BOOL isOnlyWhitespace = YES;
NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
for ( i = 0; i < [self length]; i++ )
{
if ( ![whitespace characterIsMember:[self characterAtIndex:i]] )
{
isOnlyWhitespace = NO;
break;
}
}
return isOnlyWhitespace;
}
#pragma mark -
- (NSString*) stringAsHTMLDocument:(NSString*)title
{
if ( title == nil ) title = [NSString string];
NSString *htmlDocument = [NSString stringWithFormat:htmlFrame,title,self];
return htmlDocument;
}
- (NSArray*) substringsWithRanges:(NSArray*)ranges
{
if ( ranges == nil ) return nil;
NSValue *rangeValue;
NSEnumerator *enumerator = [ranges objectEnumerator];
NSMutableArray *substrings = [NSMutableArray arrayWithCapacity:[ranges count]];
while ( rangeValue = [enumerator nextObject] )
{
NSRange aRange = [rangeValue rangeValue];
NSString *aSubstring = [self substringWithRange:aRange];
[substrings addObject:aSubstring];
}
return substrings;
}
- (NSArray*) rangesOfString:(NSString*)aString options:(unsigned)mask range:(NSRange)aRange
{
if ( aString == nil ) return nil;
int endPoint = aRange.length - aRange.location;
NSMutableArray *ranges = [NSMutableArray array];
while ( aRange.location != NSNotFound )
{
aRange = [self rangeOfString:aString options:mask range:aRange];
if ( aRange.location == NSNotFound )
break;
[ranges addObject:[NSValue valueWithRange:aRange]];
aRange.location = aRange.location + aRange.length;
aRange.length = endPoint - ( aRange.location + aRange.length );
}
return ranges;
}
#pragma mark -
- (NSString*) pathSafeString
{
NSMutableString *path = [self mutableCopyWithZone:[self zone]];
[path replaceOccurrencesOfString:@"/" withString:@"-" options:NSLiteralSearch range:NSMakeRange(0,[path length])];
[path replaceOccurrencesOfString:@":" withString:@"-" options:NSLiteralSearch range:NSMakeRange(0,[path length])];
return [path autorelease];
}
- (BOOL) isFilePackage
{
BOOL package = NO;
MDItemRef meta_data = MDItemCreate(NULL,(CFStringRef)self);
if ( meta_data == NULL ) return NO;
NSString *file_uti = (NSString*)MDItemCopyAttribute(meta_data,kMDItemContentType);
if ( file_uti == NULL ) return NO;
package = ( UTTypeConformsTo((CFStringRef)file_uti,kUTTypePackage) );
[file_uti release];
return package;
}
- (NSString*) stringByStrippingAttachmentCharacters
{
NSMutableString *textString = [self mutableCopyWithZone:[self zone]];
[textString replaceOccurrencesOfString:[NSString stringWithCharacters:(const unichar[]) {NSAttachmentCharacter} length:1]
withString:[NSString string] options:NSLiteralSearch range:NSMakeRange(0, [textString length])];
return [textString autorelease];
}
#pragma mark -
- (NSString*) MD5Digest
{
#warning this doesn't seem to work for Journler, I have to include the method locally!
NSData *data = [self dataUsingEncoding:NSUTF8StringEncoding];
if ( data )
{
NSMutableData *digest = [NSMutableData dataWithLength:MD5_DIGEST_LENGTH];
if ( digest && MD5([data bytes], [data length], [digest mutableBytes])) {
NSString *digestAsString = [digest description];
return digestAsString;
}
}
return nil;
}
#pragma mark -
- (NSString*) pathWithoutOverwritingSelf
{
int i = 0;
NSMutableString *newPath = [NSMutableString stringWithString:self];
while ( [[NSFileManager defaultManager] fileExistsAtPath:newPath] && ++i < INT_MAX )
{
// find a valid filename
NSString *extension = [self pathExtension];
NSString *filename = [[[self lastPathComponent] stringByDeletingPathExtension] pathSafeString];
NSString *directory = [self stringByDeletingLastPathComponent];
//NSString *pathWithoutExtension = [[self stringByDeletingPathExtension] pathSafeString];
//NSString *pathWithoutExtension = [self stringByDeletingPathExtension];
if ( extension != nil && [extension length] != 0 )
//[newPath setString:[[pathWithoutExtension stringByAppendingFormat:@" %i",i] stringByAppendingPathExtension:extension]];
[newPath setString:[[[directory stringByAppendingPathComponent:filename] stringByAppendingFormat:@" %i",i] stringByAppendingPathExtension:extension]];
else
//[newPath setString:[pathWithoutExtension stringByAppendingFormat:@" %i",i]];
[newPath setString:[[directory stringByAppendingPathComponent:filename] stringByAppendingFormat:@" %i",i]];
}
return newPath;
}
- (NSString*) capitalizedStringWithoutAffectingOtherLetters
{
int i;
NSMutableString *convertedString = [NSMutableString string];
NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
for ( i = 0; i < [self length]; i++ )
{
NSString *thisConverted = nil;
NSString *substring = [self substringWithRange:NSMakeRange(i,1)];
if ( i == 0 )
thisConverted = [substring uppercaseString];
else if ( [whitespace characterIsMember:[self characterAtIndex:i-1]] )
thisConverted = [substring uppercaseString];
else
thisConverted = substring;
[convertedString appendString:thisConverted];
}
return convertedString;
}
#pragma mark -
- (NSAttributedString*) attributedStringSyntaxHighlightedForHTML
{
static NSString *doubleQuote = @"\"";
static NSString *beginHTML = @"<";
static NSString *endHTML = @">";
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor blackColor], NSForegroundColorAttributeName, nil];
NSMutableAttributedString *attributedString = [[[NSMutableAttributedString alloc] initWithString:self attributes:attributes] autorelease];
//NSLog(@"html");
// convert the html marking
NSScanner *scanner = [NSScanner scannerWithString:self];
while ( ![scanner isAtEnd] )
{
int htmlStart = 0, htmlEnd = 0;
if ( [scanner scanLocation] == 0 && [self characterAtIndex:0] == '<' )
[scanner scanString:@"<" intoString:nil];
else
{
if ( [scanner scanString:beginHTML intoString:nil] )
{
htmlStart = [scanner scanLocation] - 1;
}
else
{
if ( ![scanner scanUpToString:beginHTML intoString:nil] )
break;
htmlStart = [scanner scanLocation];
if ( ![scanner scanString:beginHTML intoString:nil] )
break;
}
}
if ( [scanner scanString:endHTML intoString:nil] )
{
htmlStart = [scanner scanLocation];
}
else
{
if ( ![scanner scanUpToString:endHTML intoString:nil] )
break;
htmlEnd = [scanner scanLocation];
if ( ![scanner scanString:endHTML intoString:nil] )
break;
}
//NSLog(@"%i %i",htmlStart,htmlEnd);
[attributedString addAttribute:NSForegroundColorAttributeName value:[NSColor blueColor] range:NSMakeRange(htmlStart, htmlEnd-htmlStart+1)];
// while we're inside the html, scan for properties (any items after first space)
[scanner setScanLocation:htmlStart];
{
int propStart, propEnd;
[scanner setCharactersToBeSkipped:nil];
if ( [scanner scanUpToCharactersFromSet:[NSCharacterSet whitespaceAndNewlineCharacterSet] intoString:nil] && [scanner scanLocation] < htmlEnd )
{
propStart = [scanner scanLocation] + 1;
propEnd = htmlEnd - 1;
//NSLog(@"%i %i",propStart,propEnd);
[attributedString addAttribute:NSForegroundColorAttributeName value:[NSColor purpleColor] range:NSMakeRange(propStart, propEnd-propStart+1)];
}
[scanner setCharactersToBeSkipped:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
[scanner setScanLocation:htmlEnd];
// while we're inside the html, scan for quotes
[scanner setScanLocation:htmlStart];
while ( [scanner scanLocation] < htmlEnd )
{
int quoteStart, quoteEnd;
if ( ![scanner scanUpToString:doubleQuote intoString:nil] )
break;
quoteStart = [scanner scanLocation];
if ( ![scanner scanString:doubleQuote intoString:nil] )
break;
if ( ![scanner scanUpToString:doubleQuote intoString:nil] )
break;
quoteEnd = [scanner scanLocation];
if ( ![scanner scanString:doubleQuote intoString:nil] )
break;
//NSLog(@"%i %i",quoteStart,quoteEnd);
[attributedString addAttribute:NSForegroundColorAttributeName value:[NSColor orangeColor] range:NSMakeRange(quoteStart, quoteEnd-quoteStart+1)];
}
[scanner setScanLocation:htmlEnd];
}
//NSLog(@"quotes");
// convert the quotes
/*
scanner = [NSScanner scannerWithString:self];
while ( ![scanner isAtEnd] )
{
int quoteStart, quoteEnd;
if ( ![scanner scanUpToString:doubleQuote intoString:nil] )
break;
quoteStart = [scanner scanLocation];
if ( ![scanner scanString:doubleQuote intoString:nil] )
break;
if ( ![scanner scanUpToString:doubleQuote intoString:nil] )
break;
quoteEnd = [scanner scanLocation];
if ( ![scanner scanString:doubleQuote intoString:nil] )
break;
NSLog(@"%i %i",quoteStart,quoteEnd);
[attributedString addAttribute:NSForegroundColorAttributeName value:[NSColor orangeColor] range:NSMakeRange(quoteStart, quoteEnd-quoteStart+1)];
}
*/
return attributedString;
}
#pragma mark -
- (NSComparisonResult) compareVersion:(NSString*)versionB
{
NSArray *partsA = SUSplitVersionString(versionB);
NSArray *partsB = SUSplitVersionString(self);
NSString *partA, *partB;
int i, n, typeA, typeB, intA, intB;
n = MIN([partsA count], [partsB count]);
for (i = 0; i < n; ++i) {
partA = [partsA objectAtIndex:i];
partB = [partsB objectAtIndex:i];
typeA = SUGetCharType(partA);
typeB = SUGetCharType(partB);
// Compare types
if (typeA == typeB) {
// Same type; we can compare
if (typeA == kNumberType) {
intA = [partA intValue];
intB = [partB intValue];
if (intA > intB) {
return NSOrderedAscending;
} else if (intA < intB) {
return NSOrderedDescending;
}
} else if (typeA == kStringType) {
NSComparisonResult result = [partB compare:partA];
if (result != NSOrderedSame) {
return result;
}
}
} else {
// Not the same type? Now we have to do some validity checking
if (typeA != kStringType && typeB == kStringType) {
// typeA wins
return NSOrderedAscending;
} else if (typeA == kStringType && typeB != kStringType) {
// typeB wins
return NSOrderedDescending;
} else {
// One is a number and the other is a period. The period is invalid
if (typeA == kNumberType) {
return NSOrderedAscending;
} else {
return NSOrderedDescending;
}
}
}
}
// The versions are equal up to the point where they both still have parts
// Lets check to see if one is larger than the other
if ([partsA count] != [partsB count]) {
// Yep. Lets get the next part of the larger
// n holds the value we want
NSString *missingPart;
int missingType, shorterResult, largerResult;
if ([partsA count] > [partsB count]) {
missingPart = [partsA objectAtIndex:n];
shorterResult = NSOrderedDescending;
largerResult = NSOrderedAscending;
} else {
missingPart = [partsB objectAtIndex:n];
shorterResult = NSOrderedAscending;
largerResult = NSOrderedDescending;
}
missingType = SUGetCharType(missingPart);
// Check the type
if (missingType == kStringType) {
// It's a string. Shorter version wins
return shorterResult;
} else {
// It's a number/period. Larger version wins
return largerResult;
}
}
// The 2 strings are identical
return NSOrderedSame;
}
@end