Re: NSString lowercaseString

[Stefan Bidi]

On Wed, Aug 1, 2012 at 1:04 PM, Sebastian Reitenbach
<sebastia@l00-bugdead-prods.de> wrote:
> Hi,
>
> On Wednesday, August 1, 2012 18:00 CEST, "Sebastian Reitenbach" 
> <sebastia@l00-bugdead-prods.de> wrote:
>
> On the Apple documentation I found -[NSString lowercaseStringWithLocale:] bug 
> GNUstep doesn't seem to have that.
> When it would be available, would that maybe help me?

This method can be easily implemented with ICU's u_strToLower().  The
only thing that we would need to watch out for is that passing nil to
-lowercaseStringWithLocale: is not the same as passing NULL to
u_strToLower.

An implementation of this can be found in -corebase's
CFStringLowercase().  Similar implementation are in
CFStringUppercase() and CFStringCapitalize().

>
> Sebastian
>
>>
>> On Wednesday, August 1, 2012 16:42 CEST, David Chisnall <theraven@sucs.org> 
>> wrote:
>>
>> > On 1 Aug 2012, at 12:20, Sebastian Reitenbach wrote:
>> >
>> > > I had to change it slightly to compile with gcc, results are still 
>> > > different:
>> >
>> > This is expected, and is due to the gcc misfeature that was the subject of 
>> > a long thread a while ago: GCC will emit UTF-8 literals for Objective-C 
>> > strings (as you'd expect), but will interpret the input text according to 
>> > your locale at the time of compilation.
>>
>> Doh! So I should run
>>
>> LC_CTYPE='de_DE.UTF-8' gcc ....'
>> and it will change things?
>>
>> Either I understood wrong, or it doesn't seem to change much:
>>
>> On Linux:
>> sre@sre:~> gcc -v
>> Using built-in specs.
>> COLLECT_GCC=gcc
>> COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.5/lto-wrapper
>> Target: x86_64-suse-linux
>> Configured with: ../configure --prefix=/usr --infodir=/usr/share/info 
>> --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 
>> --enable-languages=c,c++,objc,fortran,obj-c++,java,ada 
>> --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.5 
>> --enable-ssp --disable-libssp --disable-plugin 
>> --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' 
>> --disable-libgcj --disable-libmudflap --with-slibdir=/lib64 
>> --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new 
>> --disable-libstdcxx-pch --enable-version-specific-runtime-libs 
>> --program-suffix=-4.5 --enable-linux-futex --without-system-libunwind 
>> --enable-gold --with-plugin-ld=/usr/bin/gold --with-arch-32=i586 
>> --with-tune=generic --build=x86_64-suse-linux
>> Thread model: posix
>> gcc version 4.5.0 20100604 [gcc-4_5-branch revision 160292] (SUSE Linux)
>> sre@sre:~> LC_CTYPE='en_EN.UTF-8' gcc -fgnu-runtime 
>> -fconstant-string-class=NSConstantString -I/usr/local/include 
>> -L/usr/local/lib -l gnustep-base lowercase2.m -o lowercase2 -fexceptions 
>> -fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS
>> sre@sre:~> LC_CTYPE='de_DE.UTF-8' ./lowercase2
>> 2012-08-01 17:53:49.772 lowercase2[26546] Lowercase: töÃst
>> 2012-08-01 17:53:49.774 lowercase2[26546] Lowercase: töÃst
>> 2012-08-01 17:53:49.774 lowercase2[26546] t 116
>> 2012-08-01 17:53:49.774 lowercase2[26546] Ã 195
>> 2012-08-01 17:53:49.774 lowercase2[26546] ¶ 182
>> 2012-08-01 17:53:49.774 lowercase2[26546] Ã 195
>> 2012-08-01 17:53:49.774 lowercase2[26546]  150
>> 2012-08-01 17:53:49.774 lowercase2[26546] s 115
>> 2012-08-01 17:53:49.774 lowercase2[26546] t 116
>> sre@sre:~> LC_CTYPE='en_EN.UTF-8' ./lowercase2
>> 2012-08-01 17:54:00.074 lowercase2[26556] Lowercase: töÖst
>
>> 2012-08-01 17:54:00.075 lowercase2[26556] Lowercase: töÃst
>> 2012-08-01 17:54:00.075 lowercase2[26556] t 116
>> 2012-08-01 17:54:00.075 lowercase2[26556] � 195
>> 2012-08-01 17:54:00.075 lowercase2[26556] � 182
>> 2012-08-01 17:54:00.075 lowercase2[26556] � 195
>> 2012-08-01 17:54:00.075 lowercase2[26556] � 150
>> 2012-08-01 17:54:00.075 lowercase2[26556] s 115
>> 2012-08-01 17:54:00.075 lowercase2[26556] t 116
>> sre@sre:~> LC_CTYPE='de_DE.UTF-8' gcc -fgnu-runtime 
>> -fconstant-string-class=NSConstantString -I/usr/local/include 
>> -L/usr/local/lib -l gnustep-base lowercase2.m -o lowercase2 -fexceptions 
>> -fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS
>> sre@sre:~> LC_CTYPE='de_DE.UTF-8' ./lowercase2
>> 2012-08-01 17:54:38.201 lowercase2[26581] Lowercase: töÃst
>> 2012-08-01 17:54:38.204 lowercase2[26581] Lowercase: töÃst
>> 2012-08-01 17:54:38.204 lowercase2[26581] t 116
>> 2012-08-01 17:54:38.204 lowercase2[26581] Ã 195
>> 2012-08-01 17:54:38.204 lowercase2[26581] ¶ 182
>> 2012-08-01 17:54:38.204 lowercase2[26581] Ã 195
>> 2012-08-01 17:54:38.204 lowercase2[26581]  150
>> 2012-08-01 17:54:38.204 lowercase2[26581] s 115
>> 2012-08-01 17:54:38.204 lowercase2[26581] t 116
>> sre@sre:~> LC_CTYPE='en_EN.UTF-8' ./lowercase2
>> 2012-08-01 17:54:31.822 lowercase2[26577] Lowercase: töÖst
>
>> 2012-08-01 17:54:31.823 lowercase2[26577] Lowercase: töÃst
>> 2012-08-01 17:54:31.823 lowercase2[26577] t 116
>> 2012-08-01 17:54:31.823 lowercase2[26577] � 195
>> 2012-08-01 17:54:31.823 lowercase2[26577] � 182
>> 2012-08-01 17:54:31.823 lowercase2[26577] � 195
>> 2012-08-01 17:54:31.823 lowercase2[26577] � 150
>> 2012-08-01 17:54:31.823 lowercase2[26577] s 115
>> 2012-08-01 17:54:31.823 lowercase2[26577] t 116
>>
>> On OpenBSD:
>> $ gcc -v
>> Reading specs from /usr/lib/gcc-lib/amd64-unknown-openbsd5.1/4.2.1/specs
>> Target: amd64-unknown-openbsd5.1
>> Configured with: OpenBSD/amd64 system compiler
>> Thread model: posix
>> gcc version 4.2.1 20070719
>> $ LC_CTYPE='de_DE.UTF-8' gcc -fgnu-runtime 
>> -fconstant-string-class=NSConstantString -I/usr/local/include 
>> -L/usr/local/lib -l gnustep-base lowercase2.m -o lowercase2
>> /usr/local/lib/libgnustep-base.so.5.0: warning: sprintf() is often misused, 
>> please use snprintf()
>> /usr/lib/libobjc.so.5.0: warning: strcpy() is almost always misused, please 
>> use strlcpy()
>> /usr/local/lib/libgmp.so.9.0: warning: vsprintf() is often misused, please 
>> use vsnprintf()
>> /usr/local/lib/libgnutls.so.18.2: warning: strcat() is almost always 
>> misused, please use strlcat()
>> /usr/local/lib/libgcrypt.so.18.0: warning: stpcpy() is dangerous GNU crap; 
>> don't use it
>> $ LC_CTYPE='de_DE.UTF-8' ./lowercase2
>> 2012-08-01 17:57:11.489 lowercase2[30017] Lowercase: tööst
>
>> 2012-08-01 17:57:11.496 lowercase2[30017] Lowercase: tööst
>
>> 2012-08-01 17:57:11.496 lowercase2[30017] t 116
>> 2012-08-01 17:57:11.496 lowercase2[30017] ö 246
>> 2012-08-01 17:57:11.496 lowercase2[30017] ö 246
>> 2012-08-01 17:57:11.496 lowercase2[30017] s 115
>> 2012-08-01 17:57:11.496 lowercase2[30017] t 116
>> $ LC_CTYPE='en_EN.UTF-8' ./lowercase2
>> 2012-08-01 17:57:18.012 lowercase2[14198] Lowercase: t��st
>> 2012-08-01 17:57:18.014 lowercase2[14198] Lowercase: tööst
>
>> 2012-08-01 17:57:18.014 lowercase2[14198] t 116
>> 2012-08-01 17:57:18.014 lowercase2[14198] � 246
>> 2012-08-01 17:57:18.014 lowercase2[14198] � 246
>> 2012-08-01 17:57:18.014 lowercase2[14198] s 115
>> 2012-08-01 17:57:18.014 lowercase2[14198] t 116
>> $ LC_CTYPE='en_EN.UTF-8' gcc -fgnu-runtime 
>> -fconstant-string-class=NSConstantString -I/usr/local/include 
>> -L/usr/local/lib -l gnustep-base lowercase2.m -o lowercase2
>> /usr/local/lib/libgnustep-base.so.5.0: warning: sprintf() is often misused, 
>> please use snprintf()
>> /usr/lib/libobjc.so.5.0: warning: strcpy() is almost always misused, please 
>> use strlcpy()
>> /usr/local/lib/libgmp.so.9.0: warning: vsprintf() is often misused, please 
>> use vsnprintf()
>> /usr/local/lib/libgnutls.so.18.2: warning: strcat() is almost always 
>> misused, please use strlcat()
>> /usr/local/lib/libgcrypt.so.18.0: warning: stpcpy() is dangerous GNU crap; 
>> don't use it
>> $ LC_CTYPE='de_DE.UTF-8' ./lowercase2
>> 2012-08-01 17:57:33.942 lowercase2[21547] Lowercase: tööst
>
>> 2012-08-01 17:57:33.944 lowercase2[21547] Lowercase: tööst
>
>> 2012-08-01 17:57:33.944 lowercase2[21547] t 116
>> 2012-08-01 17:57:33.944 lowercase2[21547] ö 246
>> 2012-08-01 17:57:33.944 lowercase2[21547] ö 246
>> 2012-08-01 17:57:33.944 lowercase2[21547] s 115
>> 2012-08-01 17:57:33.944 lowercase2[21547] t 116
>> $ LC_CTYPE='en_EN.UTF-8' ./lowercase2
>> 2012-08-01 17:57:38.476 lowercase2[3228] Lowercase: t��st
>> 2012-08-01 17:57:38.478 lowercase2[3228] Lowercase: tööst
>> 2012-08-01 17:57:38.478 lowercase2[3228] t 116
>> 2012-08-01 17:57:38.478 lowercase2[3228] � 246
>> 2012-08-01 17:57:38.478 lowercase2[3228] � 246
>> 2012-08-01 17:57:38.478 lowercase2[3228] s 115
>> 2012-08-01 17:57:38.478 lowercase2[3228] t 116
>>
>>
>> Sebastian
>>
>> >
>> > David
>> >
>> > -- Sent from my STANTEC-ZEBRA
>> >
>>
>>
>>
>>
>>
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