Re: question about uefi shell pipe.

["Gao, Liming" <liming.gao@intel.com>]

Krishna:
 Sorry, I am not clear what's your question here? Would you like to share this grep.efi tool? Or you meet with the problem in this grep.efi tool?

Thanks
Liming
>-----Original Message-----
>From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of
>krishnaLee
>Sent: Friday, July 06, 2018 11:35 AM
>To: krishnaLee <sssky307@163.com>
>Cc: edk2-devel@lists.01.org
>Subject: Re: [edk2] question about uefi shell pipe.
>
>
>
>Hi,All:
>may be I should reply this to EDK2 group,I had attached my file again.
>
>
>After many test,my right key of "ls | grep -trim-last 0 | grep -trim-last 0" is:
>  1,before pipe out the buffer,trim off all in-visible wchars at end of this buffer,
>(the trimed of wchar  is "like ASCII's range of" 0x0000~0x0020. )
>  2,always make sure outputBuffer[lastTwoWchar] = { 0x000A,0x000D },it will
>also bypass many other strange result.
>
>
>thank you,
>by krishna.
>
>
>
>
>
>At 2018-07-06 11:07:05, "krishnaLee" <sssky307@163.com> wrote:
>
>Jim,
>I attached the smalltest.efi if you have not compiled the test code.
>
>
>I am in developing of  this grep.efi tool,I can now bypass the test-1 question
>by follow command:
>ls | grep -trim-last 0
>ls | grep -trim-last 0 | grep -trim-last 0
>
>
>I also attached this grep.efi  tool, it almost ok :)
>
>
>//draft usage guide-------------------------------------------------
>
>
>//if find ok,returncode 1,Print(string);else returncode 0;
>grep.efi -find string
>
>
>//get first word,
>//the front and the end in-visible chars of this word will be trimed off;
>grep.efi -first
>
>
>//get back part after the string.
>
>grep.efi -begin-at string
>
>
>//get front part before the string
>grep.efi -end-at string
>
>
>//trim off first n chars at front
>//before start -trim-first,the front in-visible chars will be trimed off;
>grep.efi -trim-first n
>
>
>//trim off back n chars at end,
>//before start -trim-last,the end in-visible chars will be trimed off;
>grep.efi -trim-last n
>
>
>//trim off whitespace at front and end,
>//trim off in-visible chars infact;
>grep.efi -trim-space
>
>
>
>
>thank you,
>by krishna.
>_______________________________________________
>edk2-devel mailing list
>edk2-devel@lists.01.org
>https://lists.01.org/mailman/listinfo/edk2-devel