blender/doc/python_api/sphinx_changelog_gen.py
Bastien Montagne 298372fa06 TEST COMMIT: API doc generation changes.
This commit is intended to be reverted within a few minutes.

commit 39ffb045a52d16994c1c87ccf3249ff3222a8fca
Author: Bastien Montagne <bastien@blender.org>
Date:   Wed Jun 15 15:43:13 2022 +0200

    Py API Doc: add runtime changelog generation to `sphinx_doc_gen.py`.

    Optionally use `sphinx_changelog_gen.py` to dump current version of the
    API in a JSON file, and use closest previous one listed in given index
    file to create a changelog RST page for Sphinx.

commit fbe354d3fcfa2ad1ed430c3c27e19b99a0266dda
Author: Bastien Montagne <bastien@blender.org>
Date:   Wed Jun 15 15:36:19 2022 +0200

    Py API Doc: refactor changelog generation script.

    Main change is to make it use JSON format for its dump files, instead of
    some Python code.

    It also introduces an index for those API dump files, mapping a blender
    version to the relevant file path.

    This is then used to automatically the most recent (version-number wise)
    previous API dump to compare against current one, when generating the
    change log RST file.
2022-06-15 16:48:30 +02:00

452 lines
17 KiB
Python

# SPDX-License-Identifier: GPL-2.0-or-later
"""
---------------
Dump the python API into a JSON file, or generate changelogs from those JSON API dumps.
Typically, changelog output from this tool should be added into "doc/python_api/rst/change_log.rst"
API dump files are saved together with the generated API doc on the server, with a general index file.
This way the changelog generation simply needs to re-download the previous version's dump for the diffing process.
---------------
# Dump api blender_version.json in CWD:
blender --background --factory-startup --python doc/python_api/sphinx_changelog_gen.py -- \
--indexpath="path/to/api/docs/api_dump_index.json" \
dump --filepath-out="path/to/api/docs/<version>/api_dump.json"
# Create changelog:
blender --background --factory-startup --python doc/python_api/sphinx_changelog_gen.py -- \
--indexpath="path/to/api/docs/api_dump_index.json" \
changelog --filepath-out doc/python_api/rst/change_log.rst
# Api comparison can also run without blender,
# will by default generate changeloig between the last two available versions listed in the index,
# unless input files are provided explicitely:
python doc/python_api/sphinx_changelog_gen.py -- \
--indexpath="path/to/api/docs/api_dump_index.json" \
changelog --filepath-in-from blender_api_2_63_0.json \
--filepath-in-to blender_api_2_64_0.json \
--filepath-out changes.rst
--------------
API dump index format:
{[version_main, version_sub]: "<version>/api_dump.json", ...
}
API dump format:
[
[version_main, vserion_sub, version_path],
{"module.name":
{"parent.class":
{"basic_type", "member_name":
["Name", type, range, length, default, descr, f_args, f_arg_types, f_ret_types]}, ...
}, ...
}
]
"""
import json
import os
api_names = "basic_type" "name", "type", "range", "length", "default", "descr", "f_args", "f_arg_types", "f_ret_types"
API_BASIC_TYPE = 0
API_F_ARGS = 7
def api_version():
try:
import bpy
except:
return None, None
version = tuple(bpy.app.version[:2])
version_key = "%d.%d" % (version[0], version[1])
return version, version_key
def api_version_previous_in_index(index, version):
print("Searching for previous version to %s in %r" % (version, index))
version_prev = (version[0], version[1])
while True:
version_prev = (version_prev[0], version_prev[1] - 1)
if version_prev[1] < 0:
version_prev = (version_prev[0] - 1, 99)
if version_prev[0] < 0:
return None, None
version_prev_key = "%d.%d" % (version_prev[0], version_prev[1])
print("Checking for previous version %s" % (version_prev,))
if version_prev_key in index:
print("Found previous version %s: %r" % (version_prev, index[version_prev_key]))
return version_prev, version_prev_key
class JSONEncoderAPIDump(json.JSONEncoder):
def default(self, o):
if o is ...:
return "..."
if isinstance(o, set):
return tuple(o)
return json.JSONEncoder.default(self, o)
def api_dump(args):
import rna_info
import inspect
version, version_key = api_version()
if version is None:
raise(ValueError("API dumps can only be generated from within Blender."))
dump = {}
dump_module = dump["bpy.types"] = {}
struct = rna_info.BuildRNAInfo()[0]
for struct_id, struct_info in sorted(struct.items()):
struct_id_str = struct_info.identifier
if rna_info.rna_id_ignore(struct_id_str):
continue
for base in struct_info.get_bases():
struct_id_str = base.identifier + "." + struct_id_str
dump_class = dump_module[struct_id_str] = {}
props = [(prop.identifier, prop) for prop in struct_info.properties]
for prop_id, prop in sorted(props):
# if prop.type == 'boolean':
# continue
prop_type = prop.type
prop_length = prop.array_length
prop_range = round(prop.min, 4), round(prop.max, 4)
prop_default = prop.default
if type(prop_default) is float:
prop_default = round(prop_default, 4)
if prop_range[0] == -1 and prop_range[1] == -1:
prop_range = None
dump_class[prop_id] = (
"prop_rna", # basic_type
prop.name, # name
prop_type, # type
prop_range, # range
prop_length, # length
prop.default, # default
prop.description, # descr
Ellipsis, # f_args
Ellipsis, # f_arg_types
Ellipsis, # f_ret_types
)
del props
# python props, tricky since we don't know much about them.
for prop_id, attr in struct_info.get_py_properties():
dump_class[prop_id] = (
"prop_py", # basic_type
Ellipsis, # name
Ellipsis, # type
Ellipsis, # range
Ellipsis, # length
Ellipsis, # default
attr.__doc__, # descr
Ellipsis, # f_args
Ellipsis, # f_arg_types
Ellipsis, # f_ret_types
)
# kludge func -> props
funcs = [(func.identifier, func) for func in struct_info.functions]
for func_id, func in funcs:
func_ret_types = tuple([prop.type for prop in func.return_values])
func_args_ids = tuple([prop.identifier for prop in func.args])
func_args_type = tuple([prop.type for prop in func.args])
dump_class[func_id] = (
"func_rna", # basic_type
Ellipsis, # name
Ellipsis, # type
Ellipsis, # range
Ellipsis, # length
Ellipsis, # default
func.description, # descr
func_args_ids, # f_args
func_args_type, # f_arg_types
func_ret_types, # f_ret_types
)
del funcs
# kludge func -> props
funcs = struct_info.get_py_functions()
for func_id, attr in funcs:
# arg_str = inspect.formatargspec(*inspect.getargspec(py_func))
sig = inspect.signature(attr)
func_args_ids = [k for k, v in sig.parameters.items()]
dump_class[func_id] = (
"func_py", # basic_type
Ellipsis, # name
Ellipsis, # type
Ellipsis, # range
Ellipsis, # length
Ellipsis, # default
attr.__doc__, # descr
func_args_ids, # f_args
Ellipsis, # f_arg_types
Ellipsis, # f_ret_types
)
del funcs
filepath_out = args.filepath_out
with open(filepath_out, 'w', encoding='utf-8') as file_handle:
json.dump((version, dump), file_handle, cls=JSONEncoderAPIDump)
indexpath = args.indexpath
if os.path.exists(indexpath):
with open(indexpath, 'r', encoding='utf-8') as file_handle:
index = json.load(file_handle)
else:
index = {}
index[version_key] = filepath_out
with open(indexpath, 'w', encoding='utf-8') as file_handle:
json.dump(index, file_handle)
print("API version %s dumped into %r, and index %r has been updated" % (version_key, filepath_out, indexpath))
def compare_props(a, b, fuzz=0.75):
# must be same basic_type, function != property
if a[0] != b[0]:
return False
tot = 0
totlen = 0
for i in range(1, len(a)):
if not (Ellipsis is a[i] is b[i]):
tot += (a[i] == b[i])
totlen += 1
return ((tot / totlen) >= fuzz)
def api_changelog(args):
indexpath = args.indexpath
filepath_in_from = args.filepath_in_from
filepath_in_to = args.filepath_in_to
filepath_out = args.filepath_out
rootpath = os.path.dirname(indexpath)
version, version_key = api_version()
if version is None and (filepath_in_from is None or filepath_in_to is None):
raise(ValueError("API dumps files must be given when ran outside of Blender."))
with open(indexpath, 'r', encoding='utf-8') as file_handle:
index = json.load(file_handle)
if filepath_in_to == None:
filepath_in_to = index.get(version_key, None)
if filepath_in_to == None:
raise(ValueError("Cannot find API dump file for Blender version " + str(version) + " in index file."))
print("Found to file: %r" % filepath_in_to)
if filepath_in_from == None:
version_from, version_from_key = api_version_previous_in_index(index, version)
if version_from is None:
raise(ValueError("No previous version of Blender could be found in the index."))
filepath_in_from = index.get(version_from_key, None)
if filepath_in_from is None:
raise(ValueError("Cannot find API dump file for previous Blender version " + str(version_from) + " in index file."))
print("Found from file: %r" % filepath_in_from)
with open(os.path.join(rootpath, filepath_in_from), 'r', encoding='utf-8') as file_handle:
_, dict_from = json.load(file_handle)
with open(os.path.join(rootpath, filepath_in_to), 'r', encoding='utf-8') as file_handle:
dump_version, dict_to = json.load(file_handle)
assert(tuple(dump_version) == version)
api_changes = []
# first work out what moved
for mod_id, mod_data in dict_to.items():
mod_data_other = dict_from[mod_id]
for class_id, class_data in mod_data.items():
class_data_other = mod_data_other.get(class_id)
if class_data_other is None:
# TODO, document new structs
continue
# find the props which are not in either
set_props_new = set(class_data.keys())
set_props_other = set(class_data_other.keys())
set_props_shared = set_props_new & set_props_other
props_moved = []
props_new = []
props_old = []
func_args = []
set_props_old = set_props_other - set_props_shared
set_props_new = set_props_new - set_props_shared
# first find settings which have been moved old -> new
for prop_id_old in set_props_old.copy():
prop_data_other = class_data_other[prop_id_old]
for prop_id_new in set_props_new.copy():
prop_data = class_data[prop_id_new]
if compare_props(prop_data_other, prop_data):
props_moved.append((prop_id_old, prop_id_new))
# remove
if prop_id_old in set_props_old:
set_props_old.remove(prop_id_old)
set_props_new.remove(prop_id_new)
# func args
for prop_id in set_props_shared:
prop_data = class_data[prop_id]
prop_data_other = class_data_other[prop_id]
if prop_data[API_BASIC_TYPE] == prop_data_other[API_BASIC_TYPE]:
if prop_data[API_BASIC_TYPE].startswith("func"):
args_new = prop_data[API_F_ARGS]
args_old = prop_data_other[API_F_ARGS]
if args_new != args_old:
func_args.append((prop_id, args_old, args_new))
if props_moved or set_props_new or set_props_old or func_args:
props_moved.sort()
props_new[:] = sorted(set_props_new)
props_old[:] = sorted(set_props_old)
func_args.sort()
api_changes.append((mod_id, class_id, props_moved, props_new, props_old, func_args))
# also document function argument changes
with open(filepath_out, 'w', encoding='utf-8') as fout:
fw = fout.write
# print(api_changes)
# :class:`bpy_struct.id_data`
# Write header.
fw(""
":tocdepth: 2\n"
"\n"
"Blender API Change Log\n"
"**********************\n"
"\n"
".. note, this document is auto generated by sphinx_changelog_gen.py\n"
"\n"
"\n"
"%s to %s\n"
"============\n"
"\n" % (version_from_key, version_key))
def write_title(title, title_char):
fw("%s\n%s\n\n" % (title, title_char * len(title)))
for mod_id, class_id, props_moved, props_new, props_old, func_args in api_changes:
class_name = class_id.split(".")[-1]
title = mod_id + "." + class_name
write_title(title, "-")
if props_new:
write_title("Added", "^")
for prop_id in props_new:
fw("* :class:`%s.%s.%s`\n" % (mod_id, class_name, prop_id))
fw("\n")
if props_old:
write_title("Removed", "^")
for prop_id in props_old:
fw("* **%s**\n" % prop_id) # can't link to removed docs
fw("\n")
if props_moved:
write_title("Renamed", "^")
for prop_id_old, prop_id in props_moved:
fw("* **%s** -> :class:`%s.%s.%s`\n" % (prop_id_old, mod_id, class_name, prop_id))
fw("\n")
if func_args:
write_title("Function Arguments", "^")
for func_id, args_old, args_new in func_args:
args_new = ", ".join(args_new)
args_old = ", ".join(args_old)
fw("* :class:`%s.%s.%s` (%s), *was (%s)*\n" % (mod_id, class_name, func_id, args_new, args_old))
fw("\n")
print("Written: %r" % filepath_out)
def main(argv=None):
import sys
import argparse
if argv is None:
argv = sys.argv
if "--" not in argv:
argv = [] # as if no args are passed
else:
argv = argv[argv.index("--") + 1:] # get all args after "--"
# When --help or no args are given, print this help
usage_text = "Run blender in background mode with this script: "
"blender --background --factory-startup --python %s -- [options]" % os.path.basename(__file__)
parser = argparse.ArgumentParser(description=usage_text,
epilog=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument(
"--indexpath", dest="indexpath", metavar='FILE', required=True,
help="Path of the JSON file containing the index of all available API dumps.")
parser_commands = parser.add_subparsers(required=True)
parser_dump = parser_commands.add_parser('dump', help="Dump the current Blender Python API into a JSON file.")
parser_dump.add_argument(
"--filepath-out", dest="filepath_out", metavar='FILE', required=True,
help="Path of the JSON file containing the dump of the API.")
parser_dump.set_defaults(func=api_dump)
parser_changelog = parser_commands.add_parser('changelog', help="Generate the RST changelog page based on two Blender Python API JSON dumps.")
parser_changelog.add_argument(
"--filepath-in-from", dest="filepath_in_from", metavar='FILE', default=None,
help="JSON dump file to compare from (typically, previous version). "
"If not given, will be automatically determined from current Blender version and index file.")
parser_changelog.add_argument(
"--filepath-in-to", dest="filepath_in_to", metavar='FILE', default=None,
help="JSON dump file to compare to (typically, current version). "
"If not given, will be automatically determined from current Blender version and index file.")
parser_changelog.add_argument(
"--filepath-out", dest="filepath_out", metavar='FILE', required=True,
help="Output sphinx changelog RST file.")
parser_changelog.set_defaults(func=api_changelog)
args = parser.parse_args(argv)
args.func(args)
if __name__ == "__main__":
main()