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Add aliases for the old flake commands

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Requires reworking a bit the existing alias mechanism to allow aliases
to be composite commands themselves
This commit is contained in:
regnat 2021-07-06 15:54:56 +02:00
parent 401b09b7fe
commit cc711c6956
1 changed files with 49 additions and 28 deletions
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77
src/nix/main.cc
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@ -106,26 +106,28 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
});
}
std::map<std::string, std::vector<std::string>> aliases = {
{"add-to-store", {"store", "add-path"}},
{"cat-nar", {"nar", "cat"}},
{"cat-store", {"store", "cat"}},
{"copy-sigs", {"store", "copy-sigs"}},
{"dev-shell", {"develop"}},
{"diff-closures", {"store", "diff-closures"}},
{"dump-path", {"store", "dump-path"}},
{"hash-file", {"hash", "file"}},
{"hash-path", {"hash", "path"}},
{"ls-nar", {"nar", "ls"}},
{"ls-store", {"store", "ls"}},
{"make-content-addressable", {"store", "make-content-addressable"}},
{"optimise-store", {"store", "optimise"}},
{"ping-store", {"store", "ping"}},
{"sign-paths", {"store", "sign"}},
{"to-base16", {"hash", "to-base16"}},
{"to-base32", {"hash", "to-base32"}},
{"to-base64", {"hash", "to-base64"}},
{"verify", {"store", "verify"}},
std::map<std::vector<std::string>, std::vector<std::string>> aliases = {
{{"add-to-store"}, {"store", "add-path"}},
{{"cat-nar"}, {"nar", "cat"}},
{{"cat-store"}, {"store", "cat"}},
{{"copy-sigs"}, {"store", "copy-sigs"}},
{{"dev-shell"}, {"develop"}},
{{"diff-closures"}, {"store", "diff-closures"}},
{{"dump-path"}, {"store", "dump-path"}},
{{"hash-file"}, {"hash", "file"}},
{{"hash-path"}, {"hash", "path"}},
{{"ls-nar"}, {"nar", "ls"}},
{{"ls-store"}, {"store", "ls"}},
{{"make-content-addressable"}, {"store", "make-content-addressable"}},
{{"optimise-store"}, {"store", "optimise"}},
{{"ping-store"}, {"store", "ping"}},
{{"sign-paths"}, {"store", "sign"}},
{{"to-base16"}, {"hash", "to-base16"}},
{{"to-base32"}, {"hash", "to-base32"}},
{{"to-base64"}, {"hash", "to-base64"}},
{{"verify"}, {"store", "verify"}},
{{"flake", "init"}, {"init"}},
{{"flake", "new"}, {"new"}},
};
bool aliasUsed = false;
@ -134,14 +136,33 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
{
if (aliasUsed || command || pos == args.end()) return pos;
auto arg = *pos;
auto i = aliases.find(arg);
if (i == aliases.end()) return pos;
warn("'%s' is a deprecated alias for '%s'",
arg, concatStringsSep(" ", i->second));
pos = args.erase(pos);
for (auto j = i->second.rbegin(); j != i->second.rend(); ++j)
pos = args.insert(pos, *j);
aliasUsed = true;
// Loop through the aliases to see whether the current cli corresponds
// to one of them.
for (auto & [from, to] : aliases) {
auto i = pos;
bool isCurrentAlias = true;
// Is the current alias a prefix of the args?
for (auto & fromItem : from) {
if (i == args.end() || *i != fromItem) {
// The current alias doesn’t match the args
isCurrentAlias = false;
break;
}
i++;
}
// If we went through to the end of the previous loop, then we match
// the currently considered alias.
// So rewrite the alias in the current args.
if (isCurrentAlias) {
warn("'%s' is a deprecated alias for '%s'",
concatStringsSep(" ", from), concatStringsSep(" ", to));
pos = args.erase(pos, i);
pos = args.insert(pos, to.begin(), to.end());
aliasUsed = true;
return pos;
}
}
return pos;
}