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== Properties ==
 
== Properties ==
 
* '''.size''' - used with '''l''' only, makes $zip returns the size of the file (or 0 for a folder) instead of the filename
 
* '''.size''' - used with '''l''' only, makes $zip returns the size of the file (or 0 for a folder) instead of the filename
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* '''.mtime''' - used with '''l''' only, makes $zip returns the timestamp of the file instead of the filename, as an integer which can be changed to date format using $asctime
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* '''.mtime''' - used with '''l''' only, makes $zip returns the timestamp of the file instead of the filename
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* '''.crc''' - used with '''l''' only, makes $zip returns the crc32 of the file instead of the filename, as an integer instead of the hex format of $crc32()
 
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* '''.em''' - used with '''l''' only, makes $zip returns 128 or 256 indicating the type of AES encryption. For non-encrypted files returns 0
 
  
 
If '''l''' is not used, $zip returns 1 for success and 0 for failure.
 
If '''l''' is not used, $zip returns 1 for success and 0 for failure.
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'''Note''': If .zip contains a potentially dangerous filename such as containing '../' then 'e' and 'l' return 0 and refuse to extract or list contents.
 
'''Note''': If .zip contains a potentially dangerous filename such as containing '../' then 'e' and 'l' return 0 and refuse to extract or list contents.
  
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'''Warning''': Using the 'o' switch when extracting should NOT be used when extracting into $mircdir or any folder having important files in that folder or in any subfolders below it, especially if the zip was not created by YOU. $zip does not permit you to extract from the .zip into an existing foldername, even if it's empty. However, once you do use the 'o' switch, it allows you to extract into an existing foldername AND it also overwrites all matching files.
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'''Warning''': Using the 'o' switch when extracting should NOT be used when extracting into $mircdir or any folder having important files in that folder or in any subfolders below it, especially if the zip was not created by YOU.
  
 
== Example ==
 
== Example ==
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Note: If the password is missing/wrong for a file inside the zip, any foldernames in the zip are created.
 
Note: If the password is missing/wrong for a file inside the zip, any foldernames in the zip are created.
  
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Create logs.zip containing contents of logs subfolder beneath $mircdir, returns 1 if successful. If log.zip already exists, returns 0 failure because it will not overwrite the .zip without using the 'o' switch.
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Create logs.zip containing contents of logs subfolder beneath $mircdir, returns 1 if successful
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<source lang="mIRC">
 
 
//echo -a $zip(logs.zip,c,logs)
 
//echo -a $zip(logs.zip,c,logs)
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</source>
 
  
 
<source lang="mIRC">
 
<source lang="mIRC">
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You can use the 'l' switch to confirm whether there are more than 1 file inside the .zip, and can use the .mtime and .crc properties to compare against other files to compare whether the file inside the .zip is the same. You cannot selectively unzip 1 file out of the zip, so if you need mIRC to extract 1 file for you, you must extract everything into a dummy folder in order to access just the 1 file you need.
 
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List contents of logs.zip:
 
List contents of logs.zip:
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//var %i 1 | while ($zip(logs.zip,l,%i)) { echo -a $ord(%i) item: $base($zip(logs.zip,l,%i).crc,10,16,8) $asctime($zip(logs.zip,l,%i).mtime,yyyy/mm/dd HH:nn:ss) $v1 | inc %i }
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//var %i 1 | while ($zip(logs.zip,l,%i)) { echo -a $ord(%i) item: $v1 | inc %i }
 
Note that the 1st item was the name of the folder, indicated by the trailing backslash
 
Note that the 1st item was the name of the folder, indicated by the trailing backslash
 
</source>
 
</source>
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== Notes ==
 
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Note how the files are contained inside the zip as 'logs\filename', and the only way to extract those files to the original path is to make $mircdir be the extract-to folder, which of course you should not do without examining the .zip's contents to ensure that there are no files which would extract to another folder outside the 'logs' folder. To extract safely, you should extract from the zip to a DUMMY folder, which will make these files extract to DUMMY\logs\filenames from where you can copy or move files to where you want them to be, and then delete the DUMMY folder when finished.<br>
 
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If the 'l' switch confirms that a file exists inside the .zip and extraction fails, be sure whether you need to use the 'o' switch to both extract to a foldername which already exists, as well as to overwrite any files existing within that folder.<br>
 
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Also note that the return value of 0 indicates that it failed to extract ALL files from the zip. If you extract without a password and the .zip contains a mix of passworded and unpassworded files, the unpassworded ones will extract while the passworded ones will not, causing the '0' return value.<br>
 
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You can also use $zip(zipfile.zip,l,1).em to verify whether the 1st file in a zip has been encrypted, which requires using the 'p' password switch to extract it. While $zip cannot create files with AES-128 level of encryption, it can extract them from such a .zip created elsewhere. However, note that a .zip can contain files encrypted using the old PKZIP 2.0 encryption method, and .em returns 0 as if they're not encrypted, but $zip cannot extract using the encryption methods other than AES.<br>
 
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$zip cannot add any file attribute to the files it adds, including hidden/read-only, and if these file attributes were added to files in a .zip created elsewhere, $zip extracts them without any attributes except the 'a' archive flag.
 
  
 
== Compatibility ==
 
== Compatibility ==

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