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#!/usr/bin/env python3
# Parse Cargo.toml files for each plugin to collect their external dependencies.
# Meson will lookup those dependencies using pkg-config to be able to link
# static Rust plugins into gst-full.
from argparse import ArgumentParser
from pathlib import Path
import sys
try:
# Python11 stdlib
import tomllib
except ImportError:
import tomli as tomllib
PARSER = ArgumentParser()
PARSER.add_argument('src_dir', type=Path)
PARSER.add_argument('plugins', nargs='*')
PARSER.add_argument('--features', action="store_true", help="Get list of features to activate")
PARSER.add_argument('--gst-version', help="Get list of features to activate")
# Map plugin name to directory name, for those that does not match.
RENAMES = {
'rsaudiofx': 'audiofx',
'rsfile': 'file',
'rsflv': 'flavors',
'rsrtp': 'rtp',
'rswebp': 'webp',
'rsonvif': 'onvif',
'rstracers': 'tracers',
'rsclosedcaption': 'closedcaption',
'rswebrtc': 'webrtc',
'rspng': 'png',
'rsvideofx': 'videofx',
'rsinter': 'inter',
'textahead': 'ahead',
'textwrap': 'wrap',
}
class CargoAnalyzer:
def __init__(self):
self.src_dir = None
self.plugins = None
self.features = False
self.gst_version = "1.18"
def extract_version(self, feature_name):
if feature_name.startswith('v'):
verindex = 1
elif feature_name.startswith('gst'):
verindex = 3
else:
return None
(majver, minver) = feature_name[verindex:].split("_")
return (int(majver), int(minver))
def extract_features(self, cargo_data):
features = cargo_data['features']
wanted_features = set()
gst_version_major = int(self.gst_version.split('.')[0])
gst_version_minor = int(self.gst_version.split('.')[1])
for (name, value) in features.items():
version = self.extract_version(name)
if version is None:
continue
(majver, minver) = version
if gst_version_major < majver or gst_version_minor < minver:
continue
wanted_features |= set(value)
if name.startswith("gst"):
# Required for some reason for rswebrtc which has a specific feature
wanted_features |= {f"{cargo_data['package']['name']}/{name}"}
return wanted_features
def run(self):
with (opts.src_dir / 'Cargo.toml').open('rb') as f:
crates = tomllib.load(f)['workspace']['members']
res = set()
for name in opts.plugins:
if name.startswith('gst'):
name = name[3:]
name = RENAMES.get(name, name)
crate_path = None
for crate in crates:
if Path(crate).name == name:
crate_path = opts.src_dir / crate / 'Cargo.toml'
assert crate_path
with crate_path.open('rb') as f:
data = tomllib.load(f)
if opts.features:
res |= self.extract_features(data)
else:
try:
requires = data['package']['metadata']['capi']['pkg_config']['requires_private']
except KeyError:
continue
res.update([i.strip().replace('>', "|>").replace('<', "|<").replace("==", "|==") for i in requires.split(',')])
return res
if __name__ == "__main__":
analyzer = CargoAnalyzer()
opts = PARSER.parse_args(namespace=analyzer)
print(','.join(analyzer.run()))
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