erlang zip:unzip/1 {error, bad_central_directory} and {error, bad_eocd}

Question

I have always used erlang stdlib library zip:unzip/1 successfully. Last night i hit a bar with this error:

E:\WimaxStatsParser-1.1>erl
Eshell V5.9.2  (abort with ^G)
1> zip:unzip("e:/WimaxStatsParser-1.1/in/SomeZipFile.zip").
{error,bad_central_directory}
2>

Some one help explain the cause for this ? and how i get around it ?

ADDITIONS

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I got some other error on another file: {error,bad_eocd}. Please explain this as well.

Answer 1

I am not able to reproduce your problem with the information you give. There are 2 functions that may send this error:

get_cd_loop/5 and get_name_extra_comment/4 in stdlib-1.18.2/src/zip.erl .

it should be easy to debug

copy the file zip.erl, zip.hrl, file.hrl in a working directory,

compile with debug_info option, you will get the error message "Can't load module that resides in sticky dir", leave the VM

copy zip.beam in the stdlib.../ebin

restart the VM in the working directory, you can now add breakpoint in the zip.erl source.

BR

Pascal.