mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-13 01:36:15 +02:00
7fff625e39
* Factor out the default `MultiCommand` behavior All the `MultiCommand`s had (nearly) the same behavior when called without a subcommand. Factor out this behavior into the `NixMultiCommand` class. * Display the list of available subcommands when none is specified Whenever a user runs a command that excepts a subcommand, add the list of available subcommands to the error message. * Print the multi-command lists as Markdown lists This takes more screen real estate, but is also much more readable than a comma-separated list
690 lines
22 KiB
C++
690 lines
22 KiB
C++
#include "args.hh"
|
|
#include "args/root.hh"
|
|
#include "hash.hh"
|
|
#include "environment-variables.hh"
|
|
#include "signals.hh"
|
|
#include "users.hh"
|
|
#include "json-utils.hh"
|
|
|
|
#include <fstream>
|
|
#include <string>
|
|
#include <regex>
|
|
#include <glob.h>
|
|
|
|
namespace nix {
|
|
|
|
void Args::addFlag(Flag && flag_)
|
|
{
|
|
auto flag = std::make_shared<Flag>(std::move(flag_));
|
|
if (flag->handler.arity != ArityAny)
|
|
assert(flag->handler.arity == flag->labels.size());
|
|
assert(flag->longName != "");
|
|
longFlags[flag->longName] = flag;
|
|
for (auto & alias : flag->aliases)
|
|
longFlags[alias] = flag;
|
|
if (flag->shortName) shortFlags[flag->shortName] = flag;
|
|
}
|
|
|
|
void Args::removeFlag(const std::string & longName)
|
|
{
|
|
auto flag = longFlags.find(longName);
|
|
assert(flag != longFlags.end());
|
|
if (flag->second->shortName) shortFlags.erase(flag->second->shortName);
|
|
longFlags.erase(flag);
|
|
}
|
|
|
|
void Completions::setType(AddCompletions::Type t)
|
|
{
|
|
type = t;
|
|
}
|
|
|
|
void Completions::add(std::string completion, std::string description)
|
|
{
|
|
description = trim(description);
|
|
// ellipsize overflowing content on the back of the description
|
|
auto end_index = description.find_first_of(".\n");
|
|
if (end_index != std::string::npos) {
|
|
auto needs_ellipsis = end_index != description.size() - 1;
|
|
description.resize(end_index);
|
|
if (needs_ellipsis)
|
|
description.append(" [...]");
|
|
}
|
|
completions.insert(Completion {
|
|
.completion = completion,
|
|
.description = description
|
|
});
|
|
}
|
|
|
|
bool Completion::operator<(const Completion & other) const
|
|
{ return completion < other.completion || (completion == other.completion && description < other.description); }
|
|
|
|
std::string completionMarker = "___COMPLETE___";
|
|
|
|
RootArgs & Args::getRoot()
|
|
{
|
|
Args * p = this;
|
|
while (p->parent)
|
|
p = p->parent;
|
|
|
|
auto * res = dynamic_cast<RootArgs *>(p);
|
|
assert(res);
|
|
return *res;
|
|
}
|
|
|
|
std::optional<std::string> RootArgs::needsCompletion(std::string_view s)
|
|
{
|
|
if (!completions) return {};
|
|
auto i = s.find(completionMarker);
|
|
if (i != std::string::npos)
|
|
return std::string(s.begin(), i);
|
|
return {};
|
|
}
|
|
|
|
/**
|
|
* Basically this is `typedef std::optional<Parser> Parser(std::string_view s, Strings & r);`
|
|
*
|
|
* Except we can't recursively reference the Parser typedef, so we have to write a class.
|
|
*/
|
|
struct Parser {
|
|
std::string_view remaining;
|
|
|
|
/**
|
|
* @brief Parse the next character(s)
|
|
*
|
|
* @param r
|
|
* @return std::shared_ptr<Parser>
|
|
*/
|
|
virtual void operator()(std::shared_ptr<Parser> & state, Strings & r) = 0;
|
|
|
|
Parser(std::string_view s) : remaining(s) {};
|
|
|
|
virtual ~Parser() { };
|
|
};
|
|
|
|
struct ParseQuoted : public Parser {
|
|
/**
|
|
* @brief Accumulated string
|
|
*
|
|
* Parsed argument up to this point.
|
|
*/
|
|
std::string acc;
|
|
|
|
ParseQuoted(std::string_view s) : Parser(s) {};
|
|
|
|
virtual void operator()(std::shared_ptr<Parser> & state, Strings & r) override;
|
|
};
|
|
|
|
|
|
struct ParseUnquoted : public Parser {
|
|
/**
|
|
* @brief Accumulated string
|
|
*
|
|
* Parsed argument up to this point. Empty string is not representable in
|
|
* unquoted syntax, so we use it for the initial state.
|
|
*/
|
|
std::string acc;
|
|
|
|
ParseUnquoted(std::string_view s) : Parser(s) {};
|
|
|
|
virtual void operator()(std::shared_ptr<Parser> & state, Strings & r) override {
|
|
if (remaining.empty()) {
|
|
if (!acc.empty())
|
|
r.push_back(acc);
|
|
state = nullptr; // done
|
|
return;
|
|
}
|
|
switch (remaining[0]) {
|
|
case ' ': case '\t': case '\n': case '\r':
|
|
if (!acc.empty())
|
|
r.push_back(acc);
|
|
state = std::make_shared<ParseUnquoted>(ParseUnquoted(remaining.substr(1)));
|
|
return;
|
|
case '`':
|
|
if (remaining.size() > 1 && remaining[1] == '`') {
|
|
state = std::make_shared<ParseQuoted>(ParseQuoted(remaining.substr(2)));
|
|
return;
|
|
}
|
|
else
|
|
throw Error("single backtick is not a supported syntax in the nix shebang.");
|
|
|
|
// reserved characters
|
|
// meaning to be determined, or may be reserved indefinitely so that
|
|
// #!nix syntax looks unambiguous
|
|
case '$':
|
|
case '*':
|
|
case '~':
|
|
case '<':
|
|
case '>':
|
|
case '|':
|
|
case ';':
|
|
case '(':
|
|
case ')':
|
|
case '[':
|
|
case ']':
|
|
case '{':
|
|
case '}':
|
|
case '\'':
|
|
case '"':
|
|
case '\\':
|
|
throw Error("unsupported unquoted character in nix shebang: " + std::string(1, remaining[0]) + ". Use double backticks to escape?");
|
|
|
|
case '#':
|
|
if (acc.empty()) {
|
|
throw Error ("unquoted nix shebang argument cannot start with #. Use double backticks to escape?");
|
|
} else {
|
|
acc += remaining[0];
|
|
remaining = remaining.substr(1);
|
|
return;
|
|
}
|
|
|
|
default:
|
|
acc += remaining[0];
|
|
remaining = remaining.substr(1);
|
|
return;
|
|
}
|
|
assert(false);
|
|
}
|
|
};
|
|
|
|
void ParseQuoted::operator()(std::shared_ptr<Parser> &state, Strings & r) {
|
|
if (remaining.empty()) {
|
|
throw Error("unterminated quoted string in nix shebang");
|
|
}
|
|
switch (remaining[0]) {
|
|
case ' ':
|
|
if ((remaining.size() == 3 && remaining[1] == '`' && remaining[2] == '`')
|
|
|| (remaining.size() > 3 && remaining[1] == '`' && remaining[2] == '`' && remaining[3] != '`')) {
|
|
// exactly two backticks mark the end of a quoted string, but a preceding space is ignored if present.
|
|
state = std::make_shared<ParseUnquoted>(ParseUnquoted(remaining.substr(3)));
|
|
r.push_back(acc);
|
|
return;
|
|
}
|
|
else {
|
|
// just a normal space
|
|
acc += remaining[0];
|
|
remaining = remaining.substr(1);
|
|
return;
|
|
}
|
|
case '`':
|
|
// exactly two backticks mark the end of a quoted string
|
|
if ((remaining.size() == 2 && remaining[1] == '`')
|
|
|| (remaining.size() > 2 && remaining[1] == '`' && remaining[2] != '`')) {
|
|
state = std::make_shared<ParseUnquoted>(ParseUnquoted(remaining.substr(2)));
|
|
r.push_back(acc);
|
|
return;
|
|
}
|
|
|
|
// a sequence of at least 3 backticks is one escape-backtick which is ignored, followed by any number of backticks, which are verbatim
|
|
else if (remaining.size() >= 3 && remaining[1] == '`' && remaining[2] == '`') {
|
|
// ignore "escape" backtick
|
|
remaining = remaining.substr(1);
|
|
// add the rest
|
|
while (remaining.size() > 0 && remaining[0] == '`') {
|
|
acc += '`';
|
|
remaining = remaining.substr(1);
|
|
}
|
|
return;
|
|
}
|
|
else {
|
|
acc += remaining[0];
|
|
remaining = remaining.substr(1);
|
|
return;
|
|
}
|
|
default:
|
|
acc += remaining[0];
|
|
remaining = remaining.substr(1);
|
|
return;
|
|
}
|
|
assert(false);
|
|
}
|
|
|
|
Strings parseShebangContent(std::string_view s) {
|
|
Strings result;
|
|
std::shared_ptr<Parser> parserState(std::make_shared<ParseUnquoted>(ParseUnquoted(s)));
|
|
|
|
// trampoline == iterated strategy pattern
|
|
while (parserState) {
|
|
auto currentState = parserState;
|
|
(*currentState)(parserState, result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void RootArgs::parseCmdline(const Strings & _cmdline, bool allowShebang)
|
|
{
|
|
Strings pendingArgs;
|
|
bool dashDash = false;
|
|
|
|
Strings cmdline(_cmdline);
|
|
|
|
if (auto s = getEnv("NIX_GET_COMPLETIONS")) {
|
|
size_t n = std::stoi(*s);
|
|
assert(n > 0 && n <= cmdline.size());
|
|
*std::next(cmdline.begin(), n - 1) += completionMarker;
|
|
completions = std::make_shared<Completions>();
|
|
verbosity = lvlError;
|
|
}
|
|
|
|
bool argsSeen = false;
|
|
|
|
// Heuristic to see if we're invoked as a shebang script, namely,
|
|
// if we have at least one argument, it's the name of an
|
|
// executable file, and it starts with "#!".
|
|
Strings savedArgs;
|
|
if (allowShebang){
|
|
auto script = *cmdline.begin();
|
|
try {
|
|
std::ifstream stream(script);
|
|
char shebang[3]={0,0,0};
|
|
stream.get(shebang,3);
|
|
if (strncmp(shebang,"#!",2) == 0){
|
|
for (auto pos = std::next(cmdline.begin()); pos != cmdline.end();pos++)
|
|
savedArgs.push_back(*pos);
|
|
cmdline.clear();
|
|
|
|
std::string line;
|
|
std::getline(stream,line);
|
|
static const std::string commentChars("#/\\%@*-");
|
|
std::string shebangContent;
|
|
while (std::getline(stream,line) && !line.empty() && commentChars.find(line[0]) != std::string::npos){
|
|
line = chomp(line);
|
|
|
|
std::smatch match;
|
|
// We match one space after `nix` so that we preserve indentation.
|
|
// No space is necessary for an empty line. An empty line has basically no effect.
|
|
if (std::regex_match(line, match, std::regex("^#!\\s*nix(:? |$)(.*)$")))
|
|
shebangContent += match[2].str() + "\n";
|
|
}
|
|
for (const auto & word : parseShebangContent(shebangContent)) {
|
|
cmdline.push_back(word);
|
|
}
|
|
cmdline.push_back(script);
|
|
commandBaseDir = dirOf(script);
|
|
for (auto pos = savedArgs.begin(); pos != savedArgs.end();pos++)
|
|
cmdline.push_back(*pos);
|
|
}
|
|
} catch (SysError &) { }
|
|
}
|
|
for (auto pos = cmdline.begin(); pos != cmdline.end(); ) {
|
|
|
|
auto arg = *pos;
|
|
|
|
/* Expand compound dash options (i.e., `-qlf' -> `-q -l -f',
|
|
`-j3` -> `-j 3`). */
|
|
if (!dashDash && arg.length() > 2 && arg[0] == '-' && arg[1] != '-' && isalpha(arg[1])) {
|
|
*pos = (std::string) "-" + arg[1];
|
|
auto next = pos; ++next;
|
|
for (unsigned int j = 2; j < arg.length(); j++)
|
|
if (isalpha(arg[j]))
|
|
cmdline.insert(next, (std::string) "-" + arg[j]);
|
|
else {
|
|
cmdline.insert(next, std::string(arg, j));
|
|
break;
|
|
}
|
|
arg = *pos;
|
|
}
|
|
|
|
if (!dashDash && arg == "--") {
|
|
dashDash = true;
|
|
++pos;
|
|
}
|
|
else if (!dashDash && std::string(arg, 0, 1) == "-") {
|
|
if (!processFlag(pos, cmdline.end()))
|
|
throw UsageError("unrecognised flag '%1%'", arg);
|
|
}
|
|
else {
|
|
if (!argsSeen) {
|
|
argsSeen = true;
|
|
initialFlagsProcessed();
|
|
}
|
|
pos = rewriteArgs(cmdline, pos);
|
|
pendingArgs.push_back(*pos++);
|
|
if (processArgs(pendingArgs, false))
|
|
pendingArgs.clear();
|
|
}
|
|
}
|
|
|
|
processArgs(pendingArgs, true);
|
|
|
|
if (!argsSeen)
|
|
initialFlagsProcessed();
|
|
|
|
/* Now that we are done parsing, make sure that any experimental
|
|
* feature required by the flags is enabled */
|
|
for (auto & f : flagExperimentalFeatures)
|
|
experimentalFeatureSettings.require(f);
|
|
|
|
/* Now that all the other args are processed, run the deferred completions.
|
|
*/
|
|
for (auto d : deferredCompletions)
|
|
d.completer(*completions, d.n, d.prefix);
|
|
}
|
|
|
|
Path Args::getCommandBaseDir() const
|
|
{
|
|
assert(parent);
|
|
return parent->getCommandBaseDir();
|
|
}
|
|
|
|
Path RootArgs::getCommandBaseDir() const
|
|
{
|
|
return commandBaseDir;
|
|
}
|
|
|
|
bool Args::processFlag(Strings::iterator & pos, Strings::iterator end)
|
|
{
|
|
assert(pos != end);
|
|
|
|
auto & rootArgs = getRoot();
|
|
|
|
auto process = [&](const std::string & name, const Flag & flag) -> bool {
|
|
++pos;
|
|
|
|
if (auto & f = flag.experimentalFeature)
|
|
rootArgs.flagExperimentalFeatures.insert(*f);
|
|
|
|
std::vector<std::string> args;
|
|
bool anyCompleted = false;
|
|
for (size_t n = 0 ; n < flag.handler.arity; ++n) {
|
|
if (pos == end) {
|
|
if (flag.handler.arity == ArityAny || anyCompleted) break;
|
|
throw UsageError(
|
|
"flag '%s' requires %d argument(s), but only %d were given",
|
|
name, flag.handler.arity, n);
|
|
}
|
|
if (auto prefix = rootArgs.needsCompletion(*pos)) {
|
|
anyCompleted = true;
|
|
if (flag.completer) {
|
|
rootArgs.deferredCompletions.push_back({
|
|
.completer = flag.completer,
|
|
.n = n,
|
|
.prefix = *prefix,
|
|
});
|
|
}
|
|
}
|
|
args.push_back(*pos++);
|
|
}
|
|
if (!anyCompleted)
|
|
flag.handler.fun(std::move(args));
|
|
return true;
|
|
};
|
|
|
|
if (std::string(*pos, 0, 2) == "--") {
|
|
if (auto prefix = rootArgs.needsCompletion(*pos)) {
|
|
for (auto & [name, flag] : longFlags) {
|
|
if (!hiddenCategories.count(flag->category)
|
|
&& hasPrefix(name, std::string(*prefix, 2)))
|
|
{
|
|
if (auto & f = flag->experimentalFeature)
|
|
rootArgs.flagExperimentalFeatures.insert(*f);
|
|
rootArgs.completions->add("--" + name, flag->description);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
auto i = longFlags.find(std::string(*pos, 2));
|
|
if (i == longFlags.end()) return false;
|
|
return process("--" + i->first, *i->second);
|
|
}
|
|
|
|
if (std::string(*pos, 0, 1) == "-" && pos->size() == 2) {
|
|
auto c = (*pos)[1];
|
|
auto i = shortFlags.find(c);
|
|
if (i == shortFlags.end()) return false;
|
|
return process(std::string("-") + c, *i->second);
|
|
}
|
|
|
|
if (auto prefix = rootArgs.needsCompletion(*pos)) {
|
|
if (prefix == "-") {
|
|
rootArgs.completions->add("--");
|
|
for (auto & [flagName, flag] : shortFlags)
|
|
if (experimentalFeatureSettings.isEnabled(flag->experimentalFeature))
|
|
rootArgs.completions->add(std::string("-") + flagName, flag->description);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Args::processArgs(const Strings & args, bool finish)
|
|
{
|
|
if (expectedArgs.empty()) {
|
|
if (!args.empty())
|
|
throw UsageError("unexpected argument '%1%'", args.front());
|
|
return true;
|
|
}
|
|
|
|
auto & rootArgs = getRoot();
|
|
|
|
auto & exp = expectedArgs.front();
|
|
|
|
bool res = false;
|
|
|
|
if ((exp.handler.arity == ArityAny && finish) ||
|
|
(exp.handler.arity != ArityAny && args.size() == exp.handler.arity))
|
|
{
|
|
std::vector<std::string> ss;
|
|
bool anyCompleted = false;
|
|
for (const auto &[n, s] : enumerate(args)) {
|
|
if (auto prefix = rootArgs.needsCompletion(s)) {
|
|
anyCompleted = true;
|
|
ss.push_back(*prefix);
|
|
if (exp.completer) {
|
|
rootArgs.deferredCompletions.push_back({
|
|
.completer = exp.completer,
|
|
.n = n,
|
|
.prefix = *prefix,
|
|
});
|
|
}
|
|
} else
|
|
ss.push_back(s);
|
|
}
|
|
if (!anyCompleted)
|
|
exp.handler.fun(ss);
|
|
|
|
/* Move the list element to the processedArgs. This is almost the same as
|
|
`processedArgs.push_back(expectedArgs.front()); expectedArgs.pop_front()`,
|
|
except that it will only adjust the next and prev pointers of the list
|
|
elements, meaning the actual contents don't move in memory. This is
|
|
critical to prevent invalidating internal pointers! */
|
|
processedArgs.splice(
|
|
processedArgs.end(),
|
|
expectedArgs,
|
|
expectedArgs.begin(),
|
|
++expectedArgs.begin());
|
|
|
|
res = true;
|
|
}
|
|
|
|
if (finish && !expectedArgs.empty() && !expectedArgs.front().optional)
|
|
throw UsageError("more arguments are required");
|
|
|
|
return res;
|
|
}
|
|
|
|
nlohmann::json Args::toJSON()
|
|
{
|
|
auto flags = nlohmann::json::object();
|
|
|
|
for (auto & [name, flag] : longFlags) {
|
|
auto j = nlohmann::json::object();
|
|
j["hiddenCategory"] = hiddenCategories.count(flag->category) > 0;
|
|
if (flag->aliases.count(name)) continue;
|
|
if (flag->shortName)
|
|
j["shortName"] = std::string(1, flag->shortName);
|
|
if (flag->description != "")
|
|
j["description"] = trim(flag->description);
|
|
j["category"] = flag->category;
|
|
if (flag->handler.arity != ArityAny)
|
|
j["arity"] = flag->handler.arity;
|
|
if (!flag->labels.empty())
|
|
j["labels"] = flag->labels;
|
|
j["experimental-feature"] = flag->experimentalFeature;
|
|
flags[name] = std::move(j);
|
|
}
|
|
|
|
auto args = nlohmann::json::array();
|
|
|
|
for (auto & arg : expectedArgs) {
|
|
auto j = nlohmann::json::object();
|
|
j["label"] = arg.label;
|
|
j["optional"] = arg.optional;
|
|
if (arg.handler.arity != ArityAny)
|
|
j["arity"] = arg.handler.arity;
|
|
args.push_back(std::move(j));
|
|
}
|
|
|
|
auto res = nlohmann::json::object();
|
|
res["description"] = trim(description());
|
|
res["flags"] = std::move(flags);
|
|
res["args"] = std::move(args);
|
|
auto s = doc();
|
|
if (s != "") res.emplace("doc", stripIndentation(s));
|
|
return res;
|
|
}
|
|
|
|
static void hashTypeCompleter(AddCompletions & completions, size_t index, std::string_view prefix)
|
|
{
|
|
for (auto & type : hashTypes)
|
|
if (hasPrefix(type, prefix))
|
|
completions.add(type);
|
|
}
|
|
|
|
Args::Flag Args::Flag::mkHashTypeFlag(std::string && longName, HashType * ht)
|
|
{
|
|
return Flag {
|
|
.longName = std::move(longName),
|
|
.description = "hash algorithm ('md5', 'sha1', 'sha256', or 'sha512')",
|
|
.labels = {"hash-algo"},
|
|
.handler = {[ht](std::string s) {
|
|
*ht = parseHashType(s);
|
|
}},
|
|
.completer = hashTypeCompleter,
|
|
};
|
|
}
|
|
|
|
Args::Flag Args::Flag::mkHashTypeOptFlag(std::string && longName, std::optional<HashType> * oht)
|
|
{
|
|
return Flag {
|
|
.longName = std::move(longName),
|
|
.description = "hash algorithm ('md5', 'sha1', 'sha256', or 'sha512'). Optional as can also be gotten from SRI hash itself.",
|
|
.labels = {"hash-algo"},
|
|
.handler = {[oht](std::string s) {
|
|
*oht = std::optional<HashType> { parseHashType(s) };
|
|
}},
|
|
.completer = hashTypeCompleter,
|
|
};
|
|
}
|
|
|
|
static void _completePath(AddCompletions & completions, std::string_view prefix, bool onlyDirs)
|
|
{
|
|
completions.setType(Completions::Type::Filenames);
|
|
glob_t globbuf;
|
|
int flags = GLOB_NOESCAPE;
|
|
#ifdef GLOB_ONLYDIR
|
|
if (onlyDirs)
|
|
flags |= GLOB_ONLYDIR;
|
|
#endif
|
|
// using expandTilde here instead of GLOB_TILDE(_CHECK) so that ~<Tab> expands to /home/user/
|
|
if (glob((expandTilde(prefix) + "*").c_str(), flags, nullptr, &globbuf) == 0) {
|
|
for (size_t i = 0; i < globbuf.gl_pathc; ++i) {
|
|
if (onlyDirs) {
|
|
auto st = stat(globbuf.gl_pathv[i]);
|
|
if (!S_ISDIR(st.st_mode)) continue;
|
|
}
|
|
completions.add(globbuf.gl_pathv[i]);
|
|
}
|
|
}
|
|
globfree(&globbuf);
|
|
}
|
|
|
|
void Args::completePath(AddCompletions & completions, size_t, std::string_view prefix)
|
|
{
|
|
_completePath(completions, prefix, false);
|
|
}
|
|
|
|
void Args::completeDir(AddCompletions & completions, size_t, std::string_view prefix)
|
|
{
|
|
_completePath(completions, prefix, true);
|
|
}
|
|
|
|
Strings argvToStrings(int argc, char * * argv)
|
|
{
|
|
Strings args;
|
|
argc--; argv++;
|
|
while (argc--) args.push_back(*argv++);
|
|
return args;
|
|
}
|
|
|
|
std::optional<ExperimentalFeature> Command::experimentalFeature ()
|
|
{
|
|
return { Xp::NixCommand };
|
|
}
|
|
|
|
MultiCommand::MultiCommand(std::string_view commandName, const Commands & commands_)
|
|
: commands(commands_)
|
|
, commandName(commandName)
|
|
{
|
|
expectArgs({
|
|
.label = "subcommand",
|
|
.optional = true,
|
|
.handler = {[=,this](std::string s) {
|
|
assert(!command);
|
|
auto i = commands.find(s);
|
|
if (i == commands.end()) {
|
|
std::set<std::string> commandNames;
|
|
for (auto & [name, _] : commands)
|
|
commandNames.insert(name);
|
|
auto suggestions = Suggestions::bestMatches(commandNames, s);
|
|
throw UsageError(suggestions, "'%s' is not a recognised command", s);
|
|
}
|
|
command = {s, i->second()};
|
|
command->second->parent = this;
|
|
}},
|
|
.completer = {[&](AddCompletions & completions, size_t, std::string_view prefix) {
|
|
for (auto & [name, command] : commands)
|
|
if (hasPrefix(name, prefix))
|
|
completions.add(name);
|
|
}}
|
|
});
|
|
|
|
categories[Command::catDefault] = "Available commands";
|
|
}
|
|
|
|
bool MultiCommand::processFlag(Strings::iterator & pos, Strings::iterator end)
|
|
{
|
|
if (Args::processFlag(pos, end)) return true;
|
|
if (command && command->second->processFlag(pos, end)) return true;
|
|
return false;
|
|
}
|
|
|
|
bool MultiCommand::processArgs(const Strings & args, bool finish)
|
|
{
|
|
if (command)
|
|
return command->second->processArgs(args, finish);
|
|
else
|
|
return Args::processArgs(args, finish);
|
|
}
|
|
|
|
nlohmann::json MultiCommand::toJSON()
|
|
{
|
|
auto cmds = nlohmann::json::object();
|
|
|
|
for (auto & [name, commandFun] : commands) {
|
|
auto command = commandFun();
|
|
auto j = command->toJSON();
|
|
auto cat = nlohmann::json::object();
|
|
cat["id"] = command->category();
|
|
cat["description"] = trim(categories[command->category()]);
|
|
cat["experimental-feature"] = command->experimentalFeature();
|
|
j["category"] = std::move(cat);
|
|
cmds[name] = std::move(j);
|
|
}
|
|
|
|
auto res = Args::toJSON();
|
|
res["commands"] = std::move(cmds);
|
|
return res;
|
|
}
|
|
|
|
}
|