Initial commit

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# JetBrains project settings
+.idea
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/

LICENSE

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+MIT License
+
+Copyright (c) 2021 Diogo de Campos
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# yaml-patch

main.py

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+import sys
+
+import click
+from ruamel.yaml import YAML
+
+from yaml_patch import patch
+
+
+@click.command(
+    help="""
+Applies patches to a yaml string, keeping most of the formatting and comments.
+
+\b
+Some formatting is not kept due to underlying yaml library limitations:
+  - Indentation will be forced to two spaces
+  - Spacing before sequence dashes will be forced to two spaces
+  - Empty lines at the start of the string will be removed
+
+You can pass any number of patches to be applied, they use the following syntax options:
+
+\b
+Patch a single value:
+  <field>.<subfield>=<value>
+Example:
+  spec.replicas=2
+
+\b
+Patch a value inside a single list item:
+  <field>.[<position]>.<subfield>=<value>
+Example:
+  spec.template.containers.[0].image="mycontainer:latest"
+
+\b
+Patch a value inside all list items:
+  <field>.[].<subfield>=<value>
+Example:
+  spec.template.containers.[].image="mycontainer:latest"
+
+\b
+When calling this tool from a command line, it's higly recommended that you quote all patches arguments to avoid terminal issues.
+Example:
+  yaml-patch -f test.yml 'spec.template.containers.[0].image="mycontainer:latest"'
+""",
+)
+@click.option(
+    "--file", "-f", type=click.File("r"), default=sys.stdin, help="Path to yaml file being patched. Defaults to stdin."
+)
+@click.option(
+    "--output", "-o", type=click.File("w"), default=sys.stdout, help="Path to output patched file. Defaults to stdout."
+)
+@click.argument("patches", nargs=-1)
+def cli(file, output, patches):
+    # Split each patch into key+value separated by `=`. Use YAML to load the values coming from command line to ensure
+    # they are parsed into yaml syntax equivalents (automatically detect strings, ints, bools, etc).
+    yaml = YAML()
+    dict_patches = dict()
+    for p in patches:
+        k, v = p.split("=")
+        dict_patches[k] = yaml.load(v)
+
+    patched = patch(file.read(), dict_patches)
+    output.write(patched)
+
+
+if __name__ == "__main__":
+    cli()