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From: Cesar Rabak <crabak AT acm DOT org>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: calling unzip32 from djgpp
Date: Mon, 20 Sep 2004 15:38:32 -0300
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Message-ID: <414F23A8.8060709@acm.org>
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rafael garcia escreveu:
> Cesar Rabak <crabak AT acm DOT org> wrote in message news:<414ECC5B DOT 7000802 AT acm DOT org>...
> 
>>>@unzip32 -o %1
>>>@if errorlevel 1 echo UNZIP32 COULD NOT TERMINATE CORRECTLY
>>>@rem   I don't know why this message appears only if called 
>>>@rem   from system() but not from console
>>>
>>
>>If I call the above bat file from a C program as follows:
>>
>>#include <stdlib.h>
>>
>>int
>>main(void)
>>{
>>     system("prueba.bat");
>>     return 0;
>>}
>>
>>I get the same results be it calling the bat file ("prueba.bat") or the 
>>compiled program.
>>
>>HTH
> 
> 
> I have being got confused because my program obtains filenames to
> decompress programatically and they come with complete path, including
> extension, while when I call the BAT from console I don't give the
> extension. So:
> 
> c:\c>unzip32 -o prueba
> Archive: prueba.zip
>  extracting: ./prueba.txt
> c:\c>echo %errorlevel%
> 0
> c:\c>unzip32 -o prueba.zip
> Archive: prueba.zip
>  extracting: ./prueba.txt
> c:\c>echo %errorlevel%
> 1                             <------------------ !!!!!
> 
> The problem is when you include the ".zip" file extension, unzip32.exe
> changes its return code to 1 !!!
> 
> I don't know if this is a bug or a feature but it has bad colour for
> me.
> 

 From the unzip man page:

<quote>
.
.
.
DIAGNOSTICS
        The  exit  status  (or  error level) approximates the exit
        codes defined by PKWARE and takes on the following values,
        except under VMS:

               0      normal; no errors or warnings detected.

               1      one or more warning errors were encountered,
                      but processing completed  successfully  any-
                      way.   This  includes  zipfiles where one or
                      more files was skipped  due  to  unsupported
                      compression  method  or  encryption  with an
                      unknown password.
</quote>

The man page shows a lot of other exit codes up to 82.

HTH

--
Cesar Rabak