Страницы справочника OS X

Эта страница руководства для  версии 10.9 Mac OS X

Читать страницы руководства

textutil::trim(n)                Text and string utilities, macro processing               textutil::trim(n)



____________________________________________________________________________________________________________

NAME
       textutil::trim - Procedures to trim strings

SYNOPSIS
       package require Tcl  8.2

       package require textutil::trim  ?0.7?

       ::textutil::trim::trim string ?regexp?

       ::textutil::trim::trimleft string ?regexp?

       ::textutil::trim::trimright string ?regexp?

       ::textutil::trim::trimPrefix string prefix

       ::textutil::trim::trimEmptyHeading string

____________________________________________________________________________________________________________

DESCRIPTION
       The package textutil::trim provides commands that trim strings using arbitrary regular expressions.

       The complete set of procedures is described below.

       ::textutil::trim::trim string ?regexp?
              Remove in string any leading and trailing substring according to the regular expression regexp
              and return the result as a new string.  This is done for all lines in the string, that is  any
              substring  between  2  newline chars, or between the beginning of the string and a newline, or
              between a newline and the end of the string, or, if the string contain no newline, between the
              beginning and the end of the string.  The regular expression regexp defaults to "[ \\t]+".

       ::textutil::trim::trimleft string ?regexp?
              Remove  in  string any leading substring according to the regular expression regexp and return
              the result as a new string. This apply on any line  in  the  string,  that  is  any  substring
              between  2  newline  chars, or between the beginning of the string and a newline, or between a
              newline and the end of the string, or, if the string contain no newline, between the beginning
              and the end of the string.  The regular expression regexp defaults to "[ \\t]+".

       ::textutil::trim::trimright string ?regexp?
              Remove  in string any trailing substring according to the regular expression regexp and return
              the result as a new string. This apply on any line  in  the  string,  that  is  any  substring
              between  2  newline  chars, or between the beginning of the string and a newline, or between a
              newline and the end of the string, or, if the string contain no newline, between the beginning
              and the end of the string.  The regular expression regexp defaults to "[ \\t]+".

       ::textutil::trim::trimPrefix string prefix
              Removes  the  prefix  from  the beginning of string and returns the result. The string is left
              unchanged if it doesn't have prefix at its beginning.

       ::textutil::trim::trimEmptyHeading string
              Looks for empty lines (including lines consisting of only whitespace) at the beginning of  the
              string and removes it. The modified string is returned as the result of the command.


BUGS, IDEAS, FEEDBACK
       This  document,  and  the  package  it  describes,  will undoubtedly contain bugs and other problems.
       Please  report  such  in  the  category  textutil  of  the   Tcllib   SF   Trackers   [http://source -
       forge.net/tracker/? group_id=12883].   Please  also report any ideas for enhancements you may have for
       either package and/or documentation.

SEE ALSO
       regexp(n), split(n), string(n)

KEYWORDS
       prefix, regular expression, string, trimming

CATEGORY
       Text processing



textutil                                             0.7                                   textutil::trim(n)