1701c4d421
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25866 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
42 lines
1.5 KiB
Plaintext
42 lines
1.5 KiB
Plaintext
wxWindows regex
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---------------
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This is a version of Henry Spencer's regex, which was taken from the
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source of TCL (Toolkit Command Language). It implements POSIX regular
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expressions and also supports Unicode and some Perl5 extensions.
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The modifications made by the wxWindows team are as follows:
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regcustom.h
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-----------
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Types and constants appropriate for our use of the library are defined
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here.
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regex.h
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-------
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This is unmodified. Note though, that a portion of it (clearly marked)
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is copied from regcustom.h as part of the build process.
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regc_locale.c
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-------------
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This module provides character classifications.
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The current version from Tcl supports only a Unicode build. The
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original code from Henry Spencer, on the other hand, was ASCII only.
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Therefore, in order to support both, code from the ASCII version has been
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incorporated into the Unicode version, conditionally compiled depending
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on wxUSE_UNICODE.
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The only non-trivial dependencies were: Tcl_UniCharToUpper,
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Tcl_UniCharToLower and Tcl_UniCharToTitle. The implementations of these
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have also been incorporated (from Tcl). These in turn depend only the data
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tables in tclUniData.c (which is unmodified). At some point wxWindows
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may have it's own Unicode character classification code, at which point
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these should be used instead.
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Other dependencies (on Tcl_DString) have been eliminated using wxWindows
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wxChar functions.
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The ASCII version has also been extended to support character
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classifications based on the current locale rather than ASCII only.
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