diff options
Diffstat (limited to 'Doc/Manual')
| -rw-r--r-- | Doc/Manual/SWIG.html | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/Doc/Manual/SWIG.html b/Doc/Manual/SWIG.html index f9ea5b2ef..c0cde0172 100644 --- a/Doc/Manual/SWIG.html +++ b/Doc/Manual/SWIG.html @@ -1888,11 +1888,22 @@ and a more descriptive one, but the two functions are otherwise equivalent: <i>pattern</i> part is a regular expression in Perl syntax (as supported by the <a href="http://www.pcre.org/">Perl Compatible Regular Expressions (PCRE)</a>) library and the <i>subst</i> string - can contain back-references introduced by <tt>'\'</tt> or, as backslashes need - to be escaped in C strings, rather by <tt>"\\"</tt>. For example, to remove - any alphabetic prefix before an underscore you could use the following directive: - <tt>%rename("regex:/(\\w+)_(.*)/\\2/")</tt></td> - <td><tt>Prefix_Print</tt></td><td><tt>Print</tt></td> + can contain back-references of the form <tt>\N</tt> where <tt>N</tt> is a digit + from 0 to 9, or one of the following escape sequences: <tt>\l</tt>, <tt>\L</tt>, + <tt>\u</tt>, <tt>\U</tt> or <tt>\E</tt>. The back-references are replaced with the + contents of the corresponding capture group while the escape sequences perform the + case conversion in the substitution string: <tt>\l</tt> and <tt>\L</tt> convert to + the lower case, while <tt>\u</tt> and <tt>\U</tt> convert to the upper case. The + difference between the elements of each pair is that <tt>\l</tt> and <tt>\u</tt> + change the case of the next character only, while <tt>\L</tt> and <tt>\U</tt> do + it for all the remaining characters or until <tt>\E</tt> is encountered. + + Finally please notice that backslashes need to be escaped in C strings, so in + practice <tt>"\\"</tt> must be used in all these escape sequences. For example, + to remove any alphabetic prefix before an underscore and capitalize the remaining + part you could use the following directive: + <tt>%rename("regex:/(\\w+)_(.*)/\\u\\2/")</tt></td> + <td><tt>prefix_print</tt></td><td><tt>Print</tt></td> </tr> <tr> <td><tt>command:cmd</tt></td> |