[LANG-1013] Adding to StringUtils truncate method and test cases

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.5
• Component/s: lang.*
• Labels: github
• Assignee: Pascal Schumacher
• Reporter: Thiago Andrade
• Created: 13/May/14 19:32
• Updated: 19/Oct/16 07:00
• Resolved: 05/Jun/16 19:27

Description

Adding the following methods from StringUtils:

• public static String truncate(final String str, final int maxWidth)
• public static String truncate(final String str, int offset, final int maxWidth)

For example

StringUtils.truncate("abcdefg", 4) = "abcd"
StringUtils.truncate("abcdefg", 6) = "abcdef"
StringUtils.truncate("abcdefg", 7) = "abcdefg"
StringUtils.truncate("abcdefg", 8) = "abcdefg"

StringUtils.truncate("abcdefghijklmno", -1, 10) = "abcdefghij"
StringUtils.truncate("abcdefghijklmno", 0, 10) = "abcdefghij"
StringUtils.truncate("abcdefghijklmno", Integer.MIN_VALUE, 10) = "abcdefghij"
StringUtils.truncate("abcdefghijklmno", Integer.MIN_VALUE, Integer.MAX_VALUE) = "abcdefghijklmno"
StringUtils.truncate("abcdefghijklmno", 0, Integer.MAX_VALUE) = "abcdefghijklmno"
StringUtils.truncate("abcdefghijklmno", 1, 10) = "bcdefghijk"
StringUtils.truncate("abcdefghijklmno", 2, 10) = "cdefghijkl"
StringUtils.truncate("abcdefghijklmno", 3, 10) = "defghijklm"
StringUtils.truncate("abcdefghijklmno", 4, 10) = "efghijklmn"
StringUtils.truncate("abcdefghijklmno", 5, 10) = "fghijklmno"
StringUtils.truncate("abcdefghijklmno", 5, 5) = "fghij"
StringUtils.truncate("abcdefghijklmno", 5, 3) = "fgh"
StringUtils.truncate("abcdefghijklmno", 10, 3) = "klm"
StringUtils.truncate("abcdefghijklmno", 10, Integer.MAX_VALUE) = "klmno"
StringUtils.truncate("abcdefghijklmno", 13, 1) = "n"
StringUtils.truncate("abcdefghijklmno", 13, Integer.MAX_VALUE) = "no"
StringUtils.truncate("abcdefghijklmno", 14, 1) = "o"
StringUtils.truncate("abcdefghijklmno", 14, Integer.MAX_VALUE) = "o"

See: https://github.com/apache/commons-lang/pull/137