Newbie -- Regex, Unicode, XCode and MacOSX
Hello. I'm trying to incorporate Unicode regex searching in a little app I'm doing. I'm building using XCode 1.2 on MacOSX 10.3.4. The problem I'm having is that I can't seem to get boost's regex to incorporate unicode or wide-character support. In <boost/config/platform/macos.hpp> there is the line #define BOOST_NO_CWCHAR which seems to disable allowance for unicode by causing boost::wregex and boost::wcmatch symbols to not be typedef-ed. A test app. shows that these symbols are defined when I build using Codewarrior. So I'm wondering how to get unicode support for regex using XCode (gcc) on a MacOSX machine. Any suggestions? Thanks 10^6, STeve Moore.
Hello. I'm trying to incorporate Unicode regex searching in a little app I'm doing. I'm building using XCode 1.2 on MacOSX 10.3.4. The problem I'm having is that I can't seem to get boost's regex to incorporate unicode or wide-character support. In <boost/config/platform/macos.hpp> there is the line #define BOOST_NO_CWCHAR which seems to disable allowance for unicode by causing boost::wregex and boost::wcmatch symbols to not be typedef-ed. A test app. shows that these symbols are defined when I build using Codewarrior. So I'm wondering how to get unicode support for regex using XCode (gcc) on a MacOSX machine. Any suggestions?
Are these symbols correctly defined? Can you comment them out and still get a clean compile? John.
Hello. I'm trying to incorporate Unicode regex searching in a little app I'm doing. I'm building using XCode 1.2 on MacOSX 10.3.4. The problem I'm having is that I can't seem to get boost's regex to incorporate unicode or wide-character support. In <boost/config/platform/macos.hpp> there is the line #define BOOST_NO_CWCHAR which seems to disable allowance for unicode by causing boost::wregex and boost::wcmatch symbols to not be typedef-ed. A test app. shows that these symbols are defined when I build using Codewarrior. So I'm wondering how to get unicode support for regex using XCode (gcc) on a MacOSX machine. Any suggestions?
Are these symbols correctly defined? I'm not exactly sure which symbols you're referring to, but... The BOOST_NO_CWCHAR is defined subsequent to a comment in macos.hpp which states: "// Using the Mac OS X system BSD-style C library" Thus, I'm not sure if BOOST_NO_CWCHAR is defined "correctly" since I'm not sure what the justification is based on the #define's preceding comment. As for the boost::wregex and boost::wcmatch symbols, if BOOST_NO_CWCHAR is defined, then BOOST_NO_WREGEX is subsequently defined, which results in
On Jul 21, 2004, at 4:33 AM, John Maddock wrote: the typedefs for wcregex and wcmatch in <boost/regex/v4/regex.hpp> being skipped, so these symbols are not defined (again, I'm not sure if this is "correct" behavior since I"m not sure of the reasoning behind the BOOST_NO_CWCHAR in the first place).
Can you comment them out and still get a clean compile? If I comment out the #define BOOST_NO_CWCHAR line regex compiles with no errors using the gcc.mak file in <libs/regex/build> directory.
I hope this helps. Thanks, Steve.
Are these symbols correctly defined? I'm not exactly sure which symbols you're referring to, but... The BOOST_NO_CWCHAR is defined subsequent to a comment in macos.hpp which states: "// Using the Mac OS X system BSD-style C library" Thus, I'm not sure if BOOST_NO_CWCHAR is defined "correctly" since I'm not sure what the justification is based on the #define's preceding comment.
I don't have access to that platform, so I just go what people tell me, BOOST_NO_CWCHAR should be defined only if the platform is missing a conforming version of the <cwchar> header.
As for the boost::wregex and boost::wcmatch symbols, if BOOST_NO_CWCHAR is defined, then BOOST_NO_WREGEX is subsequently defined, which results in the typedefs for wcregex and wcmatch in <boost/regex/v4/regex.hpp> being skipped, so these symbols are not defined (again, I'm not sure if this is "correct" behavior since I"m not sure of the reasoning behind the BOOST_NO_CWCHAR in the first place).
That's correct, if there is no <cwchar> header then regex can't provide wide character support.
Can you comment them out and still get a clean compile? If I comment out the #define BOOST_NO_CWCHAR line regex compiles with no errors using the gcc.mak file in <libs/regex/build> directory.
OK, so can you use wregex etc now? If not check to see if BOOST_NO_CWCTYPE or BOOST_NO_STD_WSTRING are defined, and if so comment out these defines as well... John.
participants (1)
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John Maddock -
Steve Moore