An extractor/archiver for HAR, the human-readable archive format
To use this package, run the following command in your project's root directory:
This package provides sub packages which can be used individually:
har:library - An extractor/archiver library for HAR, the human-readable archive format
har:test_command_line_tool - Tests the har command line tool
har:test_library - Tests the archive.har library
HAR - Human Archive Format
A human readable-writeable format for representing multiple files, named
after the popular
tar format. The format is meant to be simple, intuitive,
and copy-pasteable allowing a single block of text (like a forum post) to
represent multiple files.
--- hello.txt Hello, this is a file currently archived in a HAR file. --- other.txt This is another file also archived within the same HAR file. --- yetanother.txt This is yet another file also archived within the same HAR file. --- dir1/ --- dir2/
<delimiter> <single-space> <filename> (<one-or-more-spaces> <property>)* [<extra-delimiters>] <contents> <delimiter> <single-space> <filename> (<one-or-more-spaces> <property>)* [<extra-delimiters>] <contents> ...
What HAR doesn't do
- Does not support binary files (use tar for that, har is meant for humans)
HAR only supports the foward slash
/ as a directory separator, regardless of platform.
Filenames with Spaces
Use quotes if the filename contains whitespace:
--- "i like spaces/in my filenames"
Note that quoted filenames do not support standard escape sequences (i.e.
\"). If you want to include a special character in your filename, include it. The tradeof is that HAR does not support filenames with quotes or newlines, but any other character will work.
The format allows files to specify properties, i.e.
--- file1.txt owner=root A file owed by root --- file2.txt permissions=0772 A file with custom permissions
Properties may only be separated by 1 or more space characters (ascii 0x20).
Use a trailing slash in the filename to create an empty directory.
--- mydir/ --- anotherdir/ owner=root --- dir3/ readonly --- "dir with spaces/"
Note that this is only necessary for empty directories. All the parent directories for a file do not need to be explicitly declared. i.e. if you have a HAR file like this:
--- foo/bar/baz.d My cool file
you DO NOT need to include it's parent directories:
--- foo/ --- foo/bar/
Obvious File Breaks
Extra deliimters can be used after a file to help distinguish where files begin/end, i.e.
--- myfile.txt ----------------------------------------- This is my file ...lots of text --- anotherfile.txt ----------------------------------------- This is another file. The extra '-' characters after the filename should make it easier to spot the end/beginning of files.
The only requirement is that these extra characters start with the first character in the delimiter. For example, the following file has an odd delimiter
#!ab$, so as soon as a
# character is found, the rest of the line is ignored, i.e.
#!ab$ myfile.txt #0a09fa00asdfj
The delimiter is used to mark the end of a file and the beginning of a new one. The standard delimiter is
---, however, any set of characters not containing a spaces or newlines can be used as a delimiter. Also, since a HAR file always begins with a delimiter, there's no need to declare what your delimiter is, simply use it and the parser will pull it from the first line, i.e.
### showCustomBoundary.txt This file uses a different type of delimiter. ### another.txt Another file to show that the previous file boundary has worked correctly.
This being said, using the standard delimiter is encouraged to promote uniformity and familiarity with the format.
All standard newlines sequences are supported,
Which Newlines belong to the file?
All newline characters belong to the line they are terminating. This means that all non-empty files will end with a newline. This rule makes processing har files simpler, because without it, determining which newlines belong to the file would require looking ahead at the next line.
--- empty_file.txt --- one_newline_file.txt this file has one newline --- two_newlines_file.txt this file has two newlines --- another_empty_file.txt
this file has one newline\n EOF
this file has two newlines\n \n EOF
Note that even though this mechanism makes it simpler to process HAR files, it comes at the cost of not being able to represent files without newlines at the end of the file. Since HAR is not meant to support everything (i.e. binary files), not supporting this small number of use cases is a sensible tradeoff for the added simplicity.
HAR doesn't support using
.. to create files in parent directories. This guarantees that if you extract a HAR file, it can only create files in the given output directory, it cannot extract files outside of it.
Absolute filenames aren't supported, i.e.
--- /myfile.txt This isn't valid
Double slashes are considered an error, i.e.
- Registered by Jonathan Marler
- ~next released 2 years ago
- Copyright © 2018, Jonathan Marler
- Sub packages:
- har:library, har:test_command_line_tool, har:test_library
0.1.0 2018-Mar-14 ~next 2018-Mar-14
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