Substring of Text: oxy_substring() Function

This function is used to return a string of text.

The oxy_substring() function has two signatures:

Syntax 1:

oxy_substring ( text , startOffset )

Returns a new string that is a substring of the original text string. It begins with the character at the specified index and extends to the end of text string.

text: The original string.
startOffset: The beginning index, inclusive

Syntax 2:

substring ( text , startOffset , endOffset )

Returns a new string that is a substring of the original text string. The substring begins at the specified startOffset and extends to the character at index endOffset - 1.

text: The original string.
startOffset: The beginning index, inclusive.
endOffset: The ending index, exclusive.

Example: oxy_substring Function

oxy_substring('abcd', 1) returns the string 'bcd'.

oxy_substring('abcd', 4) returns an empty string.

oxy_substring('abcd', 1, 3) returns the string 'bc'.

If you only want to display part of an attribute value, for instance the part that comes before an Appendix string:

image[longdesc]{
 content: oxy_substring(attr(longdesc), 0, 
          oxy_indexof(attr(longdesc), "Appendix"));
}