make "for x in *$1*" case insensitive?

make "for x in *$1*" case insensitive?

[zzapper]

Hi Y'All

for x in *$1*

How can I make above case insensitive I guess I could transform

where $1 = say main

to

$1 = [Mn][Aa][Ii][Nn]

How would I do above or is there a better way?
zzapper (vim & cygwin & zsh)
--

vim -c ":%s/^/WhfgTNabgureRIvzSUnpxre/|:%s/[R-T]/ /Ig|:normal ggVGg?"

http://www.vim.org/tips/tip.php?tip_id=305  Best of Vim Tips

Re: make "for x in *$1*" case insensitive?

[Peter Stephenson]

zzapper wrote:
> Hi Y'All
> 
> for x in *$1*
> 
> How can I make above case insensitive I guess I could transform

Make what case insensitive?  There's no test.

If you have a test, you can turn on extended_glob and use the (#i) flag:


setopt extended_glob
[[ MAIN = (#i)main ]] && print yes


Works in case statements, too, but remember the balanced parentheses:


case $1 in
  ((#i)main) print yes
  ;;
esac
 

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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Re: make "for x in *$1*" case insensitive?

[zzapper]

On Thu, 04 Mar 2004 14:20:27 +0000, Peter Stephenson <pws@csr.com>
wrote:

>zzapper wrote:
>> Hi Y'All
>> 
>> for x in *$1*
>> 
>> How can I make above case insensitive I guess I could transform
>
>Make what case insensitive?  There's no test.

If I call the following script with 

>vvv me

It will not list a file say READ.ME but will list READ.me

function vvv () { 
for x in *$1*
do
      echo $x
done
}

zzapper (vim & cygwin & zsh)
--

vim -c ":%s/^/WhfgTNabgureRIvzSUnpxre/|:%s/[R-T]/ /Ig|:normal ggVGg?"

http://www.vim.org/tips/tip.php?tip_id=305  Best of Vim Tips

Re: make "for x in *$1*" case insensitive?

[Peter Stephenson]

zzapper wrote:
> If I call the following script with 
> 
> >vvv me
> 
> It will not list a file say READ.ME but will list READ.me
> 
> function vvv () { 
> for x in *$1*
> do
>       echo $x
> done
> }

function vvv() {
  setopt localoptions extended_glob
  local x

  for x in (#i)*$1*
  do
	echo $x
  done
}

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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Re: make "for x in *$1*" case insensitive?

[zzapper]

On Thu, 04 Mar 2004 16:46:34 +0000, Peter Stephenson wrote:


>
>function vvv() {
>  setopt localoptions extended_glob
>  local x
>
>  for x in (#i)*$1*
>  do
>	echo $x
>  done
>}

That works perfectly!!

Thanx

zzapper (vim & cygwin & zsh)
--

vim -c ":%s/^/WhfgTNabgureRIvzSUnpxre/|:%s/[R-T]/ /Ig|:normal ggVGg?"

http://www.vim.org/tips/tip.php?tip_id=305  Best of Vim Tips

Re: make "for x in *$1*" case insensitive?

[Michael Schaap]

On 4-Mar-2004 17:46, Peter Stephenson wrote:

>zzapper wrote:
>  
>
>>If I call the following script with 
>>
>>    
>>
>>>vvv me
>>>      
>>>
>>It will not list a file say READ.ME but will list READ.me
>>
>>function vvv () { 
>>for x in *$1*
>>do
>>      echo $x
>>done
>>}
>>    
>>
>
>function vvv() {
>  setopt localoptions extended_glob
>  local x
>
>  for x in (#i)*$1*
>  do
>	echo $x
>  done
>}
>  
>
It would be nice, though, if zsh had an option to make file globbing 
case insensitive. I'd enable than on my Cygwin machine, since the 
Windows file systems basically *are* case insensitive...

(Bash has such an option: nocaseglob...)

– Michael

PATCH: case-insensitive globbing

[Peter Stephenson]

Michael Schaap wrote:
> It would be nice, though, if zsh had an option to make file globbing 
> case insensitive. I'd enable than on my Cygwin machine, since the 
> Windows file systems basically *are* case insensitive...
> 
> (Bash has such an option: nocaseglob...)

This has been on the wish list for ages, but I just realised it's
completely trivial to implement... so trivial it might as well be in
4.2.0.  It's just the existing code for (#i) turn on at the start
of all file globs.

(Follow-ups to zsh-workers, please, I just thought I'd advertise it...)

`setopt nocaseglob' (or `unsetopt caseglob') to activate.

Index: Doc/Zsh/options.yo
===================================================================
RCS file: /cvsroot/zsh/zsh/Doc/Zsh/options.yo,v
retrieving revision 1.29
diff -u -r1.29 options.yo
--- Doc/Zsh/options.yo	10 Feb 2004 19:19:02 -0000	1.29
+++ Doc/Zsh/options.yo	6 Mar 2004 00:04:29 -0000
@@ -219,6 +219,16 @@
 This disables backslashed escape sequences in echo strings unless the
 tt(-e) option is specified.
 )
+pindex(CASE_GLOB)
+cindex(case-insensitive globbing, option)
+item(tt(CASE_GLOB) <D>)(
+Make globbing (filename generation) sensitive to case.  Note that other
+uses of patterns are always sensitive to case.  If the option is unset,
+the presence of any character which is special to filename generation
+will cause case-insensitive matching.  For example, tt(cvs(/)) can
+match the directory tt(CVS) owing to the presence of the globbing flag
+(unless the option tt(BARE_GLOB_QUAL) is unset).
+)
 pindex(C_BASES)
 cindex(bases, output in C format)
 cindex(hexadecimal, output in C format)
Index: Src/options.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/options.c,v
retrieving revision 1.16
diff -u -r1.16 options.c
--- Src/options.c	15 May 2003 09:39:57 -0000	1.16
+++ Src/options.c	6 Mar 2004 00:04:38 -0000
@@ -92,6 +92,7 @@
 {NULL, "bgnice",	      OPT_EMULATE|OPT_NONBOURNE, BGNICE},
 {NULL, "braceccl",	      OPT_EMULATE,		 BRACECCL},
 {NULL, "bsdecho",	      OPT_EMULATE|OPT_SH,	 BSDECHO},
+{NULL, "caseglob",	      OPT_ALL,			 CASEGLOB},
 {NULL, "cbases",	      0,			 CBASES},
 {NULL, "cdablevars",	      OPT_EMULATE,		 CDABLEVARS},
 {NULL, "chasedots",	      OPT_EMULATE,		 CHASEDOTS},
Index: Src/pattern.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/pattern.c,v
retrieving revision 1.16
diff -u -r1.16 pattern.c
--- Src/pattern.c	3 Dec 2003 10:54:36 -0000	1.16
+++ Src/pattern.c	6 Mar 2004 00:04:46 -0000
@@ -289,7 +289,10 @@
 void
 patcompstart(void)
 {
-    patglobflags = 0;
+    if (isset(CASEGLOB))
+	patglobflags = 0;
+    else
+	patglobflags = GF_IGNCASE;
 }
 
 /* Top level pattern compilation subroutine */
Index: Src/zsh.h
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/zsh.h,v
retrieving revision 1.52
diff -u -r1.52 zsh.h
--- Src/zsh.h	15 Dec 2003 22:45:29 -0000	1.52
+++ Src/zsh.h	6 Mar 2004 00:04:53 -0000
@@ -1412,6 +1412,7 @@
     BGNICE,
     BRACECCL,
     BSDECHO,
+    CASEGLOB,
     CBASES,
     CDABLEVARS,
     CHASEDOTS,

-- 
Peter Stephenson <pws@pwstephenson.fsnet.co.uk>
Work: pws@csr.com
Web: http://www.pwstephenson.fsnet.co.uk

Re: PATCH: case-insensitive globbing

[Bart Schaefer]

On Mar 6, 12:18am, Peter Stephenson wrote:
} Subject: PATCH: case-insensitive globbing
}
} > (Bash has such an option: nocaseglob...)
} 
} This has been on the wish list for ages, but I just realised it's
} completely trivial to implement... so trivial it might as well be in
} 4.2.0.  It's just the existing code for (#i) turn on at the start
} of all file globs.

Does that mean that (#I) selectively restores case sensitivity?

Re: PATCH: case-insensitive globbing

[Peter Stephenson]

Bart Schaefer wrote:
> On Mar 6, 12:18am, Peter Stephenson wrote:
> } Subject: PATCH: case-insensitive globbing
> }
> } > (Bash has such an option: nocaseglob...)
> } 
> } This has been on the wish list for ages, but I just realised it's
> } completely trivial to implement... so trivial it might as well be in
> } 4.2.0.  It's just the existing code for (#i) turn on at the start
> } of all file globs.
> 
> Does that mean that (#I) selectively restores case sensitivity?

Correct.

There's one patch I need to get in to improve efficiency on Cygwin
(currently the shell will try to search the entire directory for files
since it doesn't know the OS treats all files case insensitively)
which I'll try and do later.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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This footnote also confirms that this email message has been swept by
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Re: PATCH: case-insensitive globbing

[Oliver Kiddle]

Peter wrote:
> 
> There's one patch I need to get in to improve efficiency on Cygwin
> (currently the shell will try to search the entire directory for files
> since it doesn't know the OS treats all files case insensitively)
> which I'll try and do later.

It's just a thought but would it be somehow possible to detect the
filesystem type and allow the efficency gain to be of use where, for
example, a windows partition is mounted from linux.

It seems that there is a getmntent library function and we can get the
name of the filesystem. Presumably this is how find's -fstype option
works. I can't see any way of determining a filesystem's
case-sensitive/case-preserving properties but we can always have a
special array so the user just needs casefs=( vfat )

Oliver

Re: PATCH: case-insensitive globbing

[James Devenish]

In message <19603.1078744528@trentino.logica.co.uk>
on Mon, Mar 08, 2004 at 12:15:28PM +0100, Oliver Kiddle wrote:
> It's just a thought but would it be somehow possible to detect the
> filesystem type and allow the efficency gain to be of use where, for
> example, a windows partition is mounted from linux.

Mac OS X has the same problem -- mixtures of case-sensitive and
case-insensitive filesystems all at once.

> It seems that there is a getmntent library function and we can get the
> name of the filesystem.

Note that this varies between SysV and BSD systems, at least (cf.
getmntent vs statfs).

> Presumably this is how find's -fstype option works. I can't see any
> way of determining a filesystem's case-sensitive/case-preserving
> properties but we can always have a special array so the user just
> needs casefs=( vfat )

Also: HFS ?

Also, what about the following phenomenon (which is not usual amongst
shells) -- is it the same under Cygwin?

% mkdir blah
% cp -p =date blah/DATE
% export PATH=$PWD/blah:$PATH
% ls /tmp/blah
DATE
% rehash
% where date
/tmp/blah/date
/bin/date

(not /tmp/blah/DATE) In this case, /tmp is on an HFS volume. Of course,
it might be different if /tmp/blah were on a UFS volume. Might be
awkward to calculate all this.