StringTools

This class provides advanced methods on Strings. It is ideally used with using StringTools and then acts as an extension to the String class.

If the first argument to any of the methods is null, the result is unspecified.

Static Members #

Encode an URL by using the standard format.

Decode an URL using the standard format.

Escapes HTML special characters of the string s.

The following replacements are made:

• & becomes &amp;
• < becomes &lt;
• > becomes &gt;

If quotes is true, the following characters are also replaced:

• " becomes &quot;
• ' becomes &#039;

Tells if the string s starts with the string start.

If start is null, the result is unspecified.

If start is the empty String "", the result is true.

Tells if the string s ends with the string end.

If end is null, the result is unspecified.

If end is the empty String "", the result is true.

Tells if the character in the string s at position pos is a space.

A character is considered to be a space character if its character code is 9,10,11,12,13 or 32.

If s is the empty String "", or if pos is not a valid position within s, the result is false.

Removes leading space characters of s.

This function internally calls isSpace() to decide which characters to remove.

If s is the empty String "" or consists only of space characters, the result is the empty String "".

Removes trailing space characters of s.

This function internally calls isSpace() to decide which characters to remove.

If s is the empty String "" or consists only of space characters, the result is the empty String "".

Removes leading and trailing space characters of s.

This is a convenience function for ltrim(rtrim(s)).

Concatenates c to s until s.length is at least l.

If c is the empty String "" or if l does not exceed s.length, s is returned unchanged.

If c.length is 1, the resulting String length is exactly l.

Otherwise the length may exceed l.

If c is null, the result is unspecified.

Replace all occurrences of the String sub in the String s by the String by.

If sub is the empty String "", by is inserted after each character of s except the last one. If by is also the empty String "", s remains unchanged.

If sub or by are null, the result is unspecified.

Encodes n into a hexadecimal representation.

If digits is specified, the resulting String is padded with "0" until its length equals digits.

Returns the character code at position index of String s, or an end-of-file indicator at if position equals s.length.

This method is faster than String.charCodeAt() on some platforms, but the result is unspecified if index is negative or greater than s.length.

End of file status can be checked by calling StringTools.isEof() with the returned value as argument.

This operation is not guaranteed to work if s contains the \0 character.

Returns the character code at position index of String s, or an end-of-file indicator at if position equals s.length.

This method is faster than String.charCodeAt() on some platforms, but the result is unspecified if index is negative or greater than s.length.

This operation is not guaranteed to work if s contains the \0 character.

Tells if c represents the end-of-file (EOF) character.

Private Members #