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asterisk_processor.py
Kevin Harwell authored
Including line breaks (<br>, <br/>, <br />) in certain parts of the rest-api
json definition (e.g. summary, notes) displays them correctly in swagger.
However, when the field gets converted to the wiki format those breaks get
escaped and show up in the text as the actual string literal "<br>" etc...
This patch makes it so when converting to the wiki format it replaces all line
break values (<br>, etc...) with line feeds ('\n').
Change-Id: Ie1c9faa0d1c5d622804cc0a21ce769095b08aa3d asterisk_processor.py 8.85 KiB
#
# Asterisk -- An open source telephony toolkit.
#
# Copyright (C) 2013, Digium, Inc.
#
# David M. Lee, II <dlee@digium.com>
#
# See http://www.asterisk.org for more information about
# the Asterisk project. Please do not directly contact
# any of the maintainers of this project for assistance;
# the project provides a web site, mailing lists and IRC
# channels for your use.
#
# This program is free software, distributed under the terms of
# the GNU General Public License Version 2. See the LICENSE file
# at the top of the source tree.
#
"""Implementation of SwaggerPostProcessor which adds fields needed to generate
Asterisk RESTful HTTP binding code.
"""
import os
import re
from swagger_model import Stringify, SwaggerError, SwaggerPostProcessor
try:
from collections import OrderedDict
except ImportError:
from odict import OrderedDict
def simple_name(name):
"""Removes the {markers} from a path segement.
@param name: Swagger path segement, with {pathVar} markers.
"""
if name.startswith('{') and name.endswith('}'):
return name[1:-1]
return name
def wikify(str):
"""Escapes a string for the wiki.
@param str: String to escape
"""
# Replace all line breaks with line feeds
str = re.sub(r'<br\s*/?>', '\n', str)
return re.sub(r'([{}\[\]])', r'\\\1', str)
def snakify(name):
"""Helper to take a camelCase or dash-seperated name and make it
snake_case.
"""
r = ''
prior_lower = False
for c in name:
if c.isupper() and prior_lower:
r += "_"
if c is '-':
c = '_'
prior_lower = c.islower()
r += c.lower()
return r
class PathSegment(Stringify):
"""Tree representation of a Swagger API declaration.
"""
def __init__(self, name, parent):
"""Ctor.
@param name: Name of this path segment. May have {pathVar} markers.
@param parent: Parent PathSegment.
"""
#: Segment name, with {pathVar} markers removed
self.name = simple_name(name)
#: True if segment is a {pathVar}, else None.
self.is_wildcard = None
#: Underscore seperated name all ancestor segments
self.full_name = None
#: Dictionary of child PathSegements
self.__children = OrderedDict()
#: List of operations on this segement
self.operations = []
if self.name != name:
self.is_wildcard = True
if not self.name:
assert(not parent)
self.full_name = ''
if not parent or not parent.name:
self.full_name = name
else:
self.full_name = "%s_%s" % (parent.full_name, self.name)
def get_child(self, path):
"""Walks decendents to get path, creating it if necessary.
@param path: List of path names.
@return: PageSegment corresponding to path.
"""
assert simple_name(path[0]) == self.name
if (len(path) == 1):
return self
child = self.__children.get(path[1])
if not child:
child = PathSegment(path[1], self)
self.__children[path[1]] = child
return child.get_child(path[1:])
def children(self):
"""Gets list of children.
"""
return self.__children.values()
def num_children(self):
"""Gets count of children.
"""
return len(self.__children)
class AsteriskProcessor(SwaggerPostProcessor):
"""A SwaggerPostProcessor which adds fields needed to generate Asterisk
RESTful HTTP binding code.
"""
#: How Swagger types map to C.
type_mapping = {
'string': 'const char *',
'boolean': 'int',
'number': 'int',
'int': 'int',
'long': 'long',
'double': 'double',
'float': 'float',
}
#: String conversion functions for string to C type.
convert_mapping = {
'string': '',
'int': 'atoi',
'long': 'atol',
'double': 'atof',
'boolean': 'ast_true',
}
#: JSON conversion functions
json_convert_mapping = {
'string': 'ast_json_string_get',
'int': 'ast_json_integer_get',
'long': 'ast_json_integer_get',
'double': 'ast_json_real_get',
'boolean': 'ast_json_is_true',
}
def __init__(self, wiki_prefix):
self.wiki_prefix = wiki_prefix
def process_resource_api(self, resource_api, context):
resource_api.wiki_prefix = self.wiki_prefix
# Derive a resource name from the API declaration's filename
resource_api.name = re.sub('\..*', '',
os.path.basename(resource_api.path))
# Now in all caps, for include guard
resource_api.name_caps = resource_api.name.upper()
resource_api.name_title = resource_api.name.capitalize()
resource_api.c_name = snakify(resource_api.name)
# Construct the PathSegement tree for the API.
if resource_api.api_declaration:
resource_api.root_path = PathSegment('', None)
for api in resource_api.api_declaration.apis:
segment = resource_api.root_path.get_child(api.path.split('/'))
for operation in api.operations:
segment.operations.append(operation)
api.full_name = segment.full_name
# Since every API path should start with /[resource], root should
# have exactly one child.
if resource_api.root_path.num_children() != 1:
raise SwaggerError(
"Should not mix resources in one API declaration", context)
# root_path isn't needed any more
resource_api.root_path = list(resource_api.root_path.children())[0]
if resource_api.name != resource_api.root_path.name:
raise SwaggerError(
"API declaration name should match", context)
resource_api.root_full_name = resource_api.root_path.full_name
def process_api(self, api, context):
api.wiki_path = wikify(api.path)
def process_operation(self, operation, context):
# Nicknames are camelCase, Asterisk coding is snake case
operation.c_nickname = snakify(operation.nickname)
operation.c_http_method = 'AST_HTTP_' + operation.http_method
if not operation.summary.endswith("."):
raise SwaggerError("Summary should end with .", context)
operation.wiki_summary = wikify(operation.summary or "")
operation.wiki_notes = wikify(operation.notes or "")
for error_response in operation.error_responses:
error_response.wiki_reason = wikify(error_response.reason or "")
operation.parse_body = (operation.body_parameter or operation.has_query_parameters) and True
def process_parameter(self, parameter, context):
if parameter.param_type == 'body':
parameter.is_body_parameter = True;
parameter.c_data_type = 'struct ast_json *'
else:
parameter.is_body_parameter = False;
if not parameter.data_type in self.type_mapping:
raise SwaggerError(
"Invalid parameter type %s" % parameter.data_type, context)
# Type conversions
parameter.c_data_type = self.type_mapping[parameter.data_type]
parameter.c_convert = self.convert_mapping[parameter.data_type]
parameter.json_convert = self.json_convert_mapping[parameter.data_type]
# Parameter names are camelcase, Asterisk convention is snake case
parameter.c_name = snakify(parameter.name)
# You shouldn't put a space between 'char *' and the variable
if parameter.c_data_type.endswith('*'):
parameter.c_space = ''
else:
parameter.c_space = ' '
parameter.wiki_description = wikify(parameter.description)
if parameter.allowable_values:
parameter.wiki_allowable_values = parameter.allowable_values.to_wiki()
else:
parameter.wiki_allowable_values = None
def process_model(self, model, context):
model.description_dox = model.description.replace('\n', '\n * ')
model.description_dox = re.sub(' *\n', '\n', model.description_dox)
model.wiki_description = wikify(model.description)
model.c_id = snakify(model.id)
return model
def process_property(self, prop, context):
if "-" in prop.name:
raise SwaggerError("Property names cannot have dashes", context)
if prop.name != prop.name.lower():
raise SwaggerError("Property name should be all lowercase",
context)
prop.wiki_description = wikify(prop.description)
def process_type(self, swagger_type, context):
swagger_type.c_name = snakify(swagger_type.name)
swagger_type.c_singular_name = snakify(swagger_type.singular_name)
swagger_type.wiki_name = wikify(swagger_type.name)