Unspace (String function)

From m204wiki
Revision as of 21:39, 11 August 2015 by Tbullock (talk | contribs) (Spell 'onr' more better.)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Remove whitespace characters from the string (String class)


The Unspace intrinsic function removes the whitespace characters from the method object string and it returns the resulting string. Options are available to:

  • Define which character or characters are to be interpreted as whitespace
  • Remove leading whitespace, trailing whitespace, both, or neither
  • Collapse to a single whitespace character any sequences of non-leading, non-trailing whitespace

Syntax

%outString = string:Unspace[( [Spaces= string], [Leading= boolean], - [Trailing= boolean], [Compress= boolean])]

Syntax terms

%outString A variable to receive the string result of the Unspace method.
string The input method object string
Spaces Spaces is an optional, name required, parameter that is a string that specifies the set of characters considered to be whitespace. The default set is the blank space (' ') character.

If you specify multiple Spaces characters, the first character of the string is the replacement space character: a single one of these is substituted for each sequence of one or more non-leading, non-trailing Spaces characters in the method object string.

Leading Leading is an optional, name required, parameter that is a Boolean Enumeration value that specifies whether to strip all leading whitespace characters. The default is True, strip leading whitespace.
Trailing Trailing is an optional, name required, parameter that is a Boolean enumeration value that specifies whether to strip all trailing whitespace characters. The default is True, strip trailing whitespace.
Compress Compress is an optional, name required, parameter that is a Boolean enumeration value that specifies whether to collapse each sequence of spaces to a single space. The default is True, collapse such sequences.

Usage notes

  • Duplicate Spaces characters are tolerated and do not affect the result.
  • Prior to Sirius Mods Version 7.8, Unspace compressed a string consisting entirely of whitespace characters to a single whitespace character. As of Version 7.8 (and also in Version 7.7 maintenance), Unspace converts a string of whitespace characters to a null string. The Version 7.8 result of

    printText {~} = X{' ':unspace}X

    is:

    ' ':unspace = XX

  • Unspace is available as of Sirius Mods Version 7.3.

Examples

The following are example Unspace statements:

%ls is longstring %ls = ' so me chars ' printText {~} = '{%ls:unspace()}' printText {~} = '{%ls:unspace(Spaces='X ')}' printText {~} = '{%ls:unspace(Spaces='X')}' printText {~} = '{%ls:unspace(leading=false)}' printText {~} = '{%ls:unspace(trailing=false)}' printText {~} = '{%ls:unspace(compress=false)}'

The results are respectively:

%ls:unspace() = 'so me chars' %ls:unspace(Spaces='X ') = 'soXmeXchars' %ls:unspace(Spaces='X') = ' so me chars' %ls:unspace(leading=false) = ' so me chars' %ls:unspace(trailing=false) = 'so me chars ' %ls:unspace(compress=false) = 'so me chars'

See also