migrate hdv code from cirv to subproject cirv-hdv project

Signed-off-by: chenliangyjy <chenliangyjy@chinamobile.com>
Change-Id: Ieb02ccf45bdf7b0b46cb204c864a521d547a5231
Signed-off-by: chenliangyjy <chenliangyjy@chinamobile.com>

1 files changed, 70 insertions, 0 deletions

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+<!---
+This work is licensed under a Creative Commons Attribution 4.0 International License.
+http://creativecommons.org/licenses/by/4.0
+-->
+
+# General Coding Style
+
+## Code
+
+Abide by [PEP-8] for general code. Some particular points to note:
+
+* Wrap code at 79 characters.
+* Use only spaces - no tabs.
+* Use implicit string concatenation where possible. Don't use the escape
+  character unless absolutely necessary.
+* Be liberal in your use of whitespace to group related statements together.
+  However, don't leave a space after the docstring and the first statement.
+* Use single quotes for all string literals.
+
+## Documentation
+
+Follow [PEP-257] and the [Sphinx guidelines] for documentation. In particular:
+
+* Wrap docstrings at 72 characters.
+* Use double-quotes for all docstrings.
+* Write all inline comments in lower-case, except where using a name/initialism.
+* Document **all** library functions/classes completely. Tests, however, only need a test case docstring.
+
+To summarise the docstring conventions:
+
+```python
+def my_function(athing, stuff=5):
+   """
+   Summary line here in imperative tense.
+
+   Longer description here...
+
+   :param athing: Details about this paramter here
+   :param stuff: Ditto
+
+   :returns: None
+   """
+   pass  # code here...
+```
+
+### Validation
+
+All code should be checked with the PyLint linter and PEP8 style guide checker.
+Pylint can be run like so:
+
+```bash
+pylint <file or directory>
+```
+
+Most PyLint errors should be resolved. You will need to do this manually.
+However, there are cases where they may not make sense (e.g. you **need** to
+pass `N` parameters to a function). In this case, disable the relevant
+case using an inline `disable` like so:
+
+```python
+# pylint: disable=[code]
+```
+
+On the other hand, all PEP8 errors should be resolved.
+
+---
+
+[PEP-8]: http://legacy.python.org/dev/peps/pep-0008/
+[PEP-257]: http://legacy.python.org/dev/peps/pep-0257/
+[Sphinx guidelines]: https://pythonhosted.org/an_example_pypi_project/sphinx.html