cmds.projects.CmdCanonicalizeRemotes: Add command

CmdCanonicalizeRemotes / canonicalize-remotes and the respective
target in topdir.mk remove the /srv/git portion from all remotes'
URLs pointing to git.janware.com.

Signed-off-by: Jan Lindemann <jan@janware.com>

make/topdir.mk

@@ -229,3 +229,6 @@ echo-hash:
 
 recache-vars:
 	rm -f $(TOPDIR)/make clean-cache cache
+
+canonicalize-remotes:
+	$(PYTHON) $(JWB_SCRIPT_DIR)/jw-pkg.py projects canonicalize-remotes

src/python/jw/pkg/cmds/projects/CmdCanonicalizeRemotes.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import annotations
+from typing import TYPE_CHECKING
+
+from argparse import Namespace, ArgumentParser
+
+from ...lib.log import *
+from ...lib.ExecContext import InputMode
+from ..Cmd import Cmd
+from ..CmdProjects import CmdProjects
+from ...App import Scope
+
+if TYPE_CHECKING:
+    from ...lib.ExecContext import Result
+
+class CmdCanonicalizeRemotes(Cmd): # export
+
+    def __rewrite_url(self, url: str) -> str:
+        return url.replace('/srv/git', '')
+
+    def __init__(self, parent: CmdProjects) -> None:
+        super().__init__(parent, 'canonicalize-remotes', help='Streamline janware Git remotes')
+
+    def add_arguments(self, parser: ArgumentParser) -> None:
+        super().add_arguments(parser)
+        parser.add_argument('-n', '--dry-run', default=False, action='store_true', help='Only log what would be done')
+
+    async def _run(self, args: Namespace) -> None:
+
+        async def git(cmd: list[str], ro=False, throw=True) -> Result:
+            cmd = ['/usr/bin/git', *cmd]
+            log(NOTICE, f'-- {" ".join(cmd)}')
+            if ro or not args.dry_run:
+                return await self.app.exec_context.run(cmd, cmd_input=InputMode.NonInteractive, throw=throw)
+        remotes: dict[str, dict[str, str]] = {}
+        stdout, stderr, status = await git(['remote', '-v'], ro=True)
+        for line in stdout.decode().splitlines():
+            name, url, fp = line.split()
+            remote = remotes.setdefault(name, {})
+            key = 'url' if fp == '(fetch)' else 'pushurl'
+            fpurls = remote.setdefault(key, [])
+            fpurls.append(url)
+        for remote, config in remotes.items():
+            dirty_keys: set[str] = set()
+            for key, urls in config.items():
+                for url in urls:
+                    if url != self.__rewrite_url(url):
+                        dirty_keys.add(key)
+            for key in dirty_keys:
+                urls = config[key]
+                await git(['config', '--unset-all', f'remote.{remote}.{key}'], throw=False)
+                for url in urls:
+                    await git(['config', '--add', f'remote.{remote}.{key}', self.__rewrite_url(url)])