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Add exists_in_path jinja helper function

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The function is a wrapper around `shutil.which` that allows to check for
an executable in the OS's PATH within templates.
This commit is contained in:
Lucas Schwiderski
2019-03-24 14:37:15 +01:00
parent 90f9ced746
commit 725b265651
2 changed files with 7 additions and 0 deletions
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6
dotdrop/jhelpers.py
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@@ -6,8 +6,14 @@ jinja2 helper methods
""" """
import os import os
import shutil
def exists(path): def exists(path):
"""return true when path exists""" """return true when path exists"""
return os.path.exists(os.path.expandvars(path)) return os.path.exists(os.path.expandvars(path))
def exists_in_path(name, path=None):
"""return true when executable exists in os path"""
return shutil.which(name, os.F_OK | os.X_OK, path) is not None

1
dotdrop/templategen.py
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@@ -49,6 +49,7 @@ class Templategen:
self.env.globals['header'] = self._header self.env.globals['header'] = self._header
# adding helper methods # adding helper methods
self.env.globals['exists'] = jhelpers.exists self.env.globals['exists'] = jhelpers.exists
self.env.globals['exists_in_path'] = jhelpers.exists_in_path
def generate(self, src): def generate(self, src):
"""render template from path""" """render template from path"""