pipen-filters 0.0.4

Add a set of useful filters for pipen templates

pipen-filters

Add a set of useful filters for pipen templates.

These filters can be used for both liquid and jinja2 templating in pipen.

Installation

pip install -U pipen-filters

Enabling/Disabling the plugin

The plugin is registered via entrypoints. It's by default enabled. To disable it: plugins=[..., "no:filters"], or uninstall this plugin.

Usage

from pipen import Proc

class MyProc(Proc):
    input = "infile:file"
    output = "outfile:file:{{in.infile | stem}}.txt"
    ...

Filters

• Parse the symbolic links

  • realpath: os.path.realpath
  • readlink: os.readlink

• Find common prefix of given paths

  • commonprefix:

    >>> commonprefix("/a/b/abc.txt", "/a/b/abc.png")
    >>> # "abc."
    >>> commonprefix("/a/b/abc.txt", "/a/b/abc.png", basename_only=False)
    >>> # "/a/b/abc."
    

• Get parts of the path

  • dirname: path.dirname
  • basename: path.basename
  • ext: get the extension (/a/b/c.txt -> .txt)
  • ext0: get the extension without dot (/a/b/c.txt -> txt)
  • prefix: get the prefix of a path (/a/b/c.d.txt -> /a/b/c.d)
  • prefix0: get the prefix of a path without dot in basename (/a/b/c.d.txt -> /a/b/c)
  • filename, fn, stem: get the stem of a path (/a/b.c.txt -> b.c)
  • filename0, fn0, stem0: get the stem of a path without dot (/a/b.c.txt -> b)
  • joinpaths: join path parts (os.path.join)

• Quote data

  • quote: put double quotes around data (1 -> "1")
  • squote: put single quotes around data (1 -> '1')

• Data conversion

  • json: json.dumps
  • json_dumps: Alias of json
  • json_loads: json.loads

• Globs

  • glob: Like glob.glob, but allows passing multiple parts of a path
  • glob0: Like glob, but only returns the first matched path

• Read file contents

  • read: Read file content. You can also pass arguments to open
  • readlines: Read file content as a list of lines. Additional arguments will be passed to open