[SOLVED] Passing List of files to 7zip exe

laks · 04-09-2012, 01:08 AM

Hi,

I am writing a program in java which archives multiple files into one single archive. Number of files to be archived is decided at runtime. 7z manual says the list of files need to be passed as comma separated values to 7z exe. Only way I can see to achieve this is to create a StringBuilder object, parse through the list of files(stored in a list) and append each of these to the command. But this doesn't look like a neat solution to me. Could Any one help me out finding a more elegant solution to this.

Thanks,
Lakshmi

AnanthaP · 04-09-2012, 03:03 AM

Actually such objects would neatly encapsulate what others would have to do. No need to reinvent the wheel.

But if you want, here is one pseudo code.

Initialise the command list.
If first file, then append file name.
Else append a comma and then a file name.

OK

laks · 04-09-2012, 03:32 AM

Thanks Anita, when you say a command list, do you mean an Array of String. Something like,

String[] command =["",""].In that case, I did not find any way to insert files at runtime.

ntubski · 04-09-2012, 12:30 PM

Quote:

Originally Posted by laks

7z manual says the list of files need to be passed as comma separated values to 7z exe.

No it doesn't.

Code:

Command Line Syntax
7z <command> [<switch>...] <base_archive_name> [<arguments>...]

<arguments> ::= <switch> | <wildcard> | <filename> | <list_file>
<switch>::= <switch_symbol><switch_characters>[<option>]
<switch_symbol> ::= '/' | '-' 
<list_file> ::= @{filename}

AnanthaP · 04-10-2012, 01:56 AM

its not Anita but AnanthaP.

Now observe carefully.

Command list is just a string initially initialised to null.

Each time you append (concatenate (string+=)) an optional comma and then the next file name.

OK

But as ntubski said ... You dont even need the comma.

OK

laks · 04-10-2012, 10:31 PM

Thanks AnanthaP and ntubski.

emanresu · 04-11-2012, 03:30 PM

i may be stating something obvious here, but Java comes with Zip classes, which in my own opinion makes it easier to create Zip archive files, and your get a self-contained java program without any external dependency on 7zip.