Package com.backblaze.b2.util

Class B2StringUtil

  • public class B2StringUtil
extends java.lang.Object
    String utilities

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String UTF8  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean decimalNumberInRange​(java.lang.String str, int offset, int length, int minInclusive, int maxInclusive)  
      static int decimalSubstringToInt​(java.lang.String s, int startIndex, int endIndex)  
      static byte[] getUtf8Bytes​(java.lang.String str)
      Returns the UTF-8 representation of a string.
      static boolean isEmpty​(java.lang.String str)  
      static java.lang.String join​(java.lang.String delimiter, java.lang.Object[] objects)  
      static java.lang.String percentDecode​(java.lang.String s)  
      static java.lang.String percentEncode​(java.lang.String s)  
      static boolean startsWithIgnoreCase​(java.lang.String all, java.lang.String possiblePrefix)  
      static java.lang.String toHexString​(byte[] b)  
      static java.lang.String underscoresToCamelCase​(java.lang.String orig, boolean capitalizeFirstLetter)
      This returns a new string with the first letter title-cased, and first character after each "_" title-cased, and all underscores removed.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • isEmpty

        public static boolean isEmpty​(java.lang.String str)
        Parameters:
        str - the string to check
        Returns:
        true if str is null or zero-length.

      • percentEncode

        public static java.lang.String percentEncode​(java.lang.String s)
        Parameters:
        s - the string to encode.
        Returns:
        a string with the contents of 's' encoded with percents as is done for URLs.

      • percentDecode

        public static java.lang.String percentDecode​(java.lang.String s)

      • decimalSubstringToInt

        public static int decimalSubstringToInt​(java.lang.String s,
                                        int startIndex,
                                        int endIndex)
        Parameters:
        s - the string to examine
        startIndex - the index of the first character to examine
        endIndex - the index just past the last character to examine. must be >= startIndex.
        Returns:
        0 if beginIndex == endIndex, otherwise the specified substring of 's' as an integer.
        Throws:
        java.lang.IllegalArgumentException - if the substring doesn't represent an integer.

      • decimalNumberInRange

        public static boolean decimalNumberInRange​(java.lang.String str,
                                           int offset,
                                           int length,
                                           int minInclusive,
                                           int maxInclusive)
        Parameters:
        str - the string to examine
        offset - index of the first character to examine. must be >= 0.
        length - the length of the substring to examine. must be >= 0.
        minInclusive - the smallest value allowed
        maxInclusive - the largest value allowed
        Returns:
        true iff the specified substring of 'str' is an integer in the specified range.

      • join

        public static java.lang.String join​(java.lang.String delimiter,
                                    java.lang.Object[] objects)

      • getUtf8Bytes

        public static byte[] getUtf8Bytes​(java.lang.String str)
        Returns the UTF-8 representation of a string. We assume that there's always a UTF-8 charset installed, and it's a bother to catch the exception everywhere, so this method catches the exception for you.

      • toHexString

        public static java.lang.String toHexString​(byte[] b)
        Parameters:
        b - the array of bytes to convert.
        Returns:
        if b is null or empty, "". otherwise, returns a string with two lowercase hex digits for each byte in the string, representing the value of that byte.

      • underscoresToCamelCase

        public static java.lang.String underscoresToCamelCase​(java.lang.String orig,
                                                      boolean capitalizeFirstLetter)
        This returns a new string with the first letter title-cased, and first character after each "_" title-cased, and all underscores removed. For example, "foo" becomes "Foo" and "foo_bar_baz" becomes "FooBarBaz".
        Parameters:
        orig - an input string with "_"s separating words.
        capitalizeFirstLetter - should the first letter be capitalized?
        Returns:
        new, camel-cased version of orig

      • startsWithIgnoreCase

        public static boolean startsWithIgnoreCase​(java.lang.String all,
                                           java.lang.String possiblePrefix)
        Parameters:
        all - the string whose prefix we're checking
        possiblePrefix - the prefix we're asking about being in all.
        Returns:
        true iff both all and possiblePrefix are non-null and all starts with possiblePrefix ignoring case.