//
//  NSStringWrapper.m
//  NSStringWrapper
//
//  Created by Tang Qiao on 12-2-4.
//  Copyright (c) 2012年 blog.devtang.com. All rights reserved.
//

#import "NSStringWrapper.h"

@implementation NSString (Wrapper)


/**  Java-like method. Returns the char value at the specified index. */
- (unichar)charAt:(int)index {
    return [self characterAtIndex:index];
}

/**
 * Java-like method. Compares two strings lexicographically.
 * the value 0 if the argument string is equal to this string;
 * a value less than 0 if this string is lexicographically less than the string argument;
 * and a value greater than 0 if this string is lexicographically greater than the string argument.
 */
- (int)compareTo:(NSString *)anotherString {
    return (int)[self compare:anotherString];
}

/** Java-like method. Compares two strings lexicographically, ignoring case differences. */
- (int)compareToIgnoreCase:(NSString *)str {
    return (int)[self compare:str options:NSCaseInsensitiveSearch];
}

/** Java-like method. Returns true if and only if this string contains the specified sequence of char values. */
- (BOOL)contains:(NSString *)str {
    NSRange range = [self rangeOfString:str];
    return (range.location != NSNotFound);
}

- (BOOL)startsWith:(NSString *)prefix {
    return [self hasPrefix:prefix];
}

- (BOOL)endsWith:(NSString *)suffix {
    return [self hasSuffix:suffix];
}

- (BOOL)equals:(NSString *)anotherString {
    return [self isEqualToString:anotherString];
}

- (BOOL)equalsIgnoreCase:(NSString *)anotherString {
    return [[self toLowerCase] equals:[anotherString toLowerCase]];
}

- (int)indexOfChar:(unichar)ch {
    return [self indexOfChar:ch fromIndex:0];
}

- (int)indexOfChar:(unichar)ch fromIndex:(int)index {
    int len = (int)self.length;
    for (int i = index; i < len; ++i) {
        if (ch == [self charAt:i]) {
            return i;
        }
    }
    return JavaNotFound;
}

- (int)indexOfString:(NSString *)str {
    NSRange range = [self rangeOfString:str];
    if (range.location == NSNotFound) {
        return JavaNotFound;
    }
    return (int)range.location;
}

- (int)indexOfString:(NSString *)str fromIndex:(int)index {
    NSRange fromRange = NSMakeRange(index, self.length - index);
    NSRange range = [self rangeOfString:str options:NSLiteralSearch range:fromRange];
    if (range.location == NSNotFound) {
        return JavaNotFound;
    }
    return (int)range.location;
}

- (int)lastIndexOfChar:(unichar)ch {
    int len = (int)self.length;
    for (int i = len - 1; i >= 0; --i) {
        if ([self charAt:i] == ch) {
            return i;
        }
    }
    return JavaNotFound;
}

- (int)lastIndexOfChar:(unichar)ch fromIndex:(int)index {
    int len = (int)self.length;
    if (index >= len) {
        index = len - 1;
    }
    for (int i = index; i >= 0; --i) {
        if ([self charAt:i] == ch) {
            return index;
        }
    }
    return JavaNotFound;
}

- (int)lastIndexOfString:(NSString *)str {
    NSRange range = [self rangeOfString:str options:NSBackwardsSearch];
    if (range.location == NSNotFound) {
        return JavaNotFound;
    }
    return (int)range.location;
}

- (int)lastIndexOfString:(NSString *)str fromIndex:(int)index {
    NSRange fromRange = NSMakeRange(0, index);
    NSRange range = [self rangeOfString:str options:NSBackwardsSearch range:fromRange];
    if (range.location == NSNotFound) {
        return JavaNotFound;
    }
    return (int)range.location;
}

- (NSString *)substringFromIndex:(NSInteger)beginIndex
                         toIndex:(NSInteger)endIndex {
    if (endIndex <= beginIndex) {
        return @"";
    }
    NSRange range = NSMakeRange(beginIndex, endIndex - beginIndex);
    return [self substringWithRange:range];
}

- (NSString *)toLowerCase {
    return [self lowercaseString];
}

- (NSString *)toUpperCase {
    return [self uppercaseString];
}

- (NSString *)trim {
    return [self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}

- (NSString *)replaceAll:(NSString *)origin with:(NSString *)replacement {
    return [self stringByReplacingOccurrencesOfString:origin withString:replacement];
}

- (NSArray *)split:(NSString *)separator {
    return [self componentsSeparatedByString:separator];
}


@end
