ZIP (.zip)

  • Import and Export fully support the ZIP format.
  • Import and Export can work with general ZIP archives as well as with specific application formats consisting of multiple related files.
  • Background

      Registered MIME type: application/zip
      Popular data compression and archival format.
      Used to reduce storage space and transfer times.
      Binary format.
      Can contain multiple files.
      Supports a variety of compression methods.
      Published by Phil Katz in 1989.

    Import and Export

    • When importing from a ZIP archive that constitutes a supported multi-file Import format, the converter for this format will be used.
    • Import["file.zip"] gives full path specifications for all files in a general ZIP file.
    • Export["file.zip","fn"->expr] exports expr to a file and compresses it as a ZIP archive, inferring the file format from the file extension of "fn".
    • Export["file.zip",{"fn1"->expr1,"fn2"->expr2,}] exports multiple expressions to a ZIP file archive.
    • Import["file.zip"] returns an expression of the form {"fn1", "fn2",}.
    • Import["file.zip","fn"] extracts "fn" from the archive and imports it.
    • Import["file.zip",elem] imports the specified element from a ZIP file.
    • Import["file.zip",{elem,suba,subb,}] imports a subelement.
    • Import["file.zip",{{elem1,elem2,}}] imports multiple elements.
    • Import["file","ZIP"] or Import["file",{"ZIP",elem,}] imports any file as a ZIP archive.
    • Export["file.zip",expr,elem] creates a ZIP archive by treating expr as specifying element elem.
    • Export["file.zip",{expr1,expr2,},{{elem1,elem2,}}] treats each expri as specifying the corresponding elemi.
    • Export["file.zip",expr,opt1->val1,] exports expr with the specified option elements taken to have the specified values.
    • Export["file.zip",{elem1->expr1,elem2->expr2,},"Rules"] uses rules to specify the elements to be exported.
    • See the reference pages for full general information on Import and Export.
    • ImportString and ExportString support ZIP compression.

    Elements

    • General Import elements:
    • "Elements"list of elements and options available in this file
      "Rules"full list of rules for each element and option
      "Options"list of rules for options, properties, and settings
    • The following can be used to select or specify individual files in a ZIP archive:
    • "FileNames"list of filenames representing the contents of a ZIP archive
      "filename"a single file
      "filename","format" a single file, taken to be in the specified format
      "filename","format",elemelement elem from the specified file
    • Import by default uses the "FileNames" element for the ZIP format.
    • Import["file.zip","fn"] extracts and imports file "fn".
    • File names can include relative or absolute directory specifications and the abbreviated string patterns supported by StringMatchQ.
    • Import["file.zip","*"] imports an entire archive.
    • Import["file.zip","dir/*.jpg"] imports all JPEG files from subdirectory dir.
    • Export["file.zip",{"file1.gif"->"expr1","file2.txt"->"expr2"},"Rules"] creates a ZIP archive containing a GIF and a Text file.
    • Export["file",{expr1,expr2},{"ZIP",{{"file1","GIF"},{"file2","Text"}}}] is equivalent to the above.

    Examples

    Basic Examples  (1)

    This creates a ZIP archive containing a GIF and a text file:

    In[1]:=
    Click for copyable input

    Importing a ZIP archive gives the names of the files in the archive:

    In[2]:=
    Click for copyable input
    Out[2]=

    Extract and import "a.gif" from this ZIP file:

    In[3]:=
    Click for copyable input
    Out[3]=

    Extract and import "b.txt" from the file:

    In[4]:=
    Click for copyable input
    Out[4]=

    See Also

    "BZIP2"  "Directory"  "GZIP"  "TAR"

    Introduced in 2007
    (6.0)