Java String Starts Wtih startsWithIgnoreCase(String s, int offset, int end, String lowerCase)

Description

True if the lower-case version of s[off:end] starts with the given lower-case string.

License

Apache License

Declaration

static boolean startsWithIgnoreCase(String s, int offset, int end, String lowerCase) 

Method Source Code

//package com.java2s;
// Licensed under the Apache License, Version 2.0 (the "License");

public class Main {
    /**//from   w ww.  j  a  v a2  s .  com
     * True if the lower-case version of s[off:end] starts with the given
     * lower-case string.
     */
    static boolean startsWithIgnoreCase(String s, int offset, int end, String lowerCase) {
        int n = lowerCase.length();
        if (end - offset < n) {
            return false;
        }
        int off = offset;
        for (int i = 0; i < n; ++off, ++i) {
            if (lcase(s.charAt(off)) != lowerCase.charAt(i)) {
                return false;
            }
        }
        return true;
    }

    /**
     * True if the lower-case version of s[off:end] starts with the given
     * lower-case string.
     */
    static boolean startsWithIgnoreCase(char[] s, int offset, int end, String lowerCase) {
        int n = lowerCase.length();
        if (end - offset < n) {
            return false;
        }
        int off = offset;
        for (int i = 0; i < n; ++off, ++i) {
            if (lcase(s[off]) != lowerCase.charAt(i)) {
                return false;
            }
        }
        return true;
    }

    /** Returns ch or the lower-case equivalent if ch is in ['A'..'Z']. */
    static char lcase(char ch) {
        return 'A' <= ch && ch <= 'Z' ? (char) (ch | 32) : ch;
    }

    static char charAt(char[] s, int i) {
        return s[i];
    }
}

Related

1. startsWithIgnoreCase(String inputValue, String prefix)
2. startsWithIgnoreCase(String main, String with)
3. startsWithIgnoreCase(String name, Iterable patterns)
4. startsWithIgnoreCase(String originalString, String checkPhrase)
5. startsWithIgnoreCase(String p_sStr, String p_sSubStr)
6. startsWithIgnoreCase(String s, String prefix)
7. startsWithIgnoreCase(String s, String prefix)
8. startsWithIgnoreCase(String s, String prefix)
9. startsWithIgnoreCase(String s, String start)