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# The MIT License
#
# Copyright 2012 Sony Mobile Communications. All rights reserved.
#
# 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.
"""Module to interface with Gerrit."""
def from_json(json_data, key):
"""Extract values from JSON data.
:arg dict json_data: The JSON data
:arg str key: Key to get data for.
:Returns: The value of `key` from `json_data`, or None if `json_data`
does not contain `key`.
"""
if key in json_data:
return json_data[key]
return None
def escape_string(string):
"""Escape a string for use in Gerrit commands.
:arg str string: The string to escape.
:returns: The string with necessary escapes and surrounding double quotes
so that it can be passed to any of the Gerrit commands that require
double-quoted strings.
"""
result = string
result = result.replace('\\', '\\\\')
result = result.replace('"', '\\"')
return '"' + result + '"'
class GerritReviewMessageFormatter(object):
"""Helper class to format review messages that are sent to Gerrit.
:arg str header: (optional) If specified, will be prepended as the first
paragraph of the output message.
:arg str footer: (optional) If specified, will be appended as the last
paragraph of the output message.
"""
def __init__(self, header=None, footer=None):
"""See class docstring."""
self.paragraphs = []
if header:
self.header = header.strip()
else:
self.header = ""
if footer:
self.footer = footer.strip()
else:
self.footer = ""
def append(self, data):
"""Append the given `data` to the output.
:arg data: If a list, it is formatted as a bullet list with each
entry in the list being a separate bullet. Otherwise if it is a
string, the string is added as a paragraph.
:raises: ValueError if `data` is not a list or a string.
"""
if not data:
return
if isinstance(data, list):
# First we need to clean up the data.
#
# Gerrit creates new bullet items when it gets newline characters
# within a bullet list paragraph, so unless we remove the newlines
# from the texts the resulting bullet list will contain multiple
# bullets and look crappy.
#
# We add the '*' character on the beginning of each bullet text in
# the next step, so we strip off any existing leading '*' that the
# caller has added, and then strip off any leading or trailing
# whitespace.
_items = [x.replace("\n", " ").strip().lstrip('*').strip()
for x in data]
# Create the bullet list only with the items that still have any
# text in them after cleaning up.
_paragraph = "\n".join(["* %s" % x for x in _items if x])
if _paragraph:
self.paragraphs.append(_paragraph)
elif isinstance(data, str):
_paragraph = data.strip()
if _paragraph:
self.paragraphs.append(_paragraph)
else:
raise ValueError('Data must be a list or a string')
def is_empty(self):
"""Check if the formatter is empty.
:Returns: True if empty, i.e. no paragraphs have been added.
"""
return not self.paragraphs
def format(self):
"""Format the message parts to a string.
:Returns: A string of all the message parts separated into paragraphs,
with header and footer paragraphs if they were specified in the
constructor.
"""
message = ""
if self.paragraphs:
if self.header:
message += (self.header + '\n\n')
message += "\n\n".join(self.paragraphs)
if self.footer:
message += ('\n\n' + self.footer)
return message
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