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__main__.py
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__main__.py
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import argparse
import sys
from typing import Mapping, Optional
from dunamai import check_version, Version, Style, Vcs, _VERSION_PATTERN
common_sub_args = [
{
"triggers": ["--metadata"],
"action": "store_true",
"dest": "metadata",
"default": None,
"help": "Always include metadata",
},
{
"triggers": ["--no-metadata"],
"action": "store_false",
"dest": "metadata",
"default": None,
"help": "Never include metadata",
},
{
"triggers": ["--dirty"],
"action": "store_true",
"dest": "dirty",
"help": "Include dirty flag if applicable",
},
{
"triggers": ["--pattern"],
"default": _VERSION_PATTERN,
"help": (
"Regular expression matched against the version source."
" This should contain one capture group named `base` corresponding to"
" the release segment of the source, and optionally another two groups"
" named `stage` and `revision` corresponding to a prerelease type"
" (such as 'alpha' or 'rc') and number (such as in 'alpha-2' or 'rc3')"
),
},
{
"triggers": ["--format"],
"help": (
"Custom output format. Available substitutions:"
" {base}, {stage}, {revision}, {distance}, {commit}, {dirty}"
),
},
{
"triggers": ["--style"],
"choices": [x.value for x in Style],
"help": (
"Preconfigured output format."
" Will default to PEP 440 if not set and no custom format given."
" If you specify both a style and a custom format, then the format"
" will be validated against the style's rules"
),
},
{
"triggers": ["--latest-tag"],
"action": "store_true",
"dest": "latest_tag",
"default": False,
"help": "Only inspect the latest tag on the latest tagged commit for a pattern match",
},
{
"triggers": ["--debug"],
"action": "store_true",
"dest": "debug",
"default": False,
"help": "Display additional information on stderr for troubleshooting",
},
]
cli_spec = {
"description": "Generate dynamic versions",
"sub_dest": "command",
"sub": {
"from": {
"description": "Generate version from a particular VCS",
"sub_dest": "vcs",
"sub": {
Vcs.Any.value: {
"description": "Generate version from any detected VCS",
"args": [
*common_sub_args,
{
"triggers": ["--tag-dir"],
"default": "tags",
"help": "Location of tags relative to the root (Subversion)",
},
],
},
Vcs.Git.value: {
"description": "Generate version from Git",
"args": common_sub_args,
},
Vcs.Mercurial.value: {
"description": "Generate version from Mercurial",
"args": common_sub_args,
},
Vcs.Darcs.value: {
"description": "Generate version from Darcs",
"args": common_sub_args,
},
Vcs.Subversion.value: {
"description": "Generate version from Subversion",
"args": [
*common_sub_args,
{
"triggers": ["--tag-dir"],
"default": "tags",
"help": "Location of tags relative to the root",
},
],
},
Vcs.Bazaar.value: {
"description": "Generate version from Bazaar",
"args": common_sub_args,
},
Vcs.Fossil.value: {
"description": "Generate version from Fossil",
"args": common_sub_args,
},
},
},
"check": {
"description": "Check if a version is valid for a style",
"args": [
{
"triggers": [],
"dest": "version",
"help": "Version to check; may be piped in",
"nargs": "?",
},
{
"triggers": ["--style"],
"choices": [x.value for x in Style],
"default": Style.Pep440.value,
"help": "Style against which to check",
},
],
},
},
}
def build_parser(spec: Mapping, parser: argparse.ArgumentParser = None) -> argparse.ArgumentParser:
if parser is None:
parser = argparse.ArgumentParser(
description=spec["description"], formatter_class=argparse.ArgumentDefaultsHelpFormatter
)
if "args" in spec:
for arg in spec["args"]:
triggers = arg["triggers"]
parser.add_argument(*triggers, **{k: v for k, v in arg.items() if k != "triggers"})
if "sub" in spec:
subparsers = parser.add_subparsers(dest=spec["sub_dest"])
subparsers.required = True
for name, sub_spec in spec["sub"].items():
subparser = subparsers.add_parser(
name,
description=sub_spec.get("description"),
help=sub_spec.get("description"),
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
)
build_parser(sub_spec, subparser)
return parser
def parse_args(argv=None) -> argparse.Namespace:
return build_parser(cli_spec).parse_args(argv)
def from_stdin(value: Optional[str]) -> Optional[str]:
if value is not None:
return value
if not sys.stdin.isatty():
return sys.stdin.readline().strip()
return None
def from_vcs(
vcs: Vcs,
pattern: str,
metadata: Optional[bool],
dirty: bool,
format: Optional[str],
style: Optional[Style],
latest_tag: bool,
tag_dir: str,
debug: bool,
) -> None:
version = Version.from_vcs(vcs, pattern, latest_tag, tag_dir)
print(version.serialize(metadata, dirty, format, style))
if debug:
print("# Matched tag: {}".format(version._matched_tag), file=sys.stderr)
print("# Newer unmatched tags: {}".format(version._newer_unmatched_tags), file=sys.stderr)
def main() -> None:
args = parse_args()
try:
if args.command == "from":
tag_dir = getattr(args, "tag_dir", "tags")
from_vcs(
Vcs(args.vcs),
args.pattern,
args.metadata,
args.dirty,
args.format,
Style(args.style) if args.style else None,
args.latest_tag,
tag_dir,
args.debug,
)
elif args.command == "check":
version = from_stdin(args.version)
if version is None:
raise ValueError("A version must be specified")
check_version(version, Style(args.style))
except Exception as e:
print(e, file=sys.stderr)
sys.exit(1)