void CmdBase::PrintUsage(const Args& args, Str::StringRef syntax, Str::StringRef description) const {
if(description.empty()) {
Print("%s: %s %s", _("usage"), args.Argv(0).c_str(), syntax.c_str());
} else {
Print("%s: %s %s — %s", _("usage"), args.Argv(0).c_str(), syntax.c_str(), description.c_str());
}
}
bool ParseCvarValue(Str::StringRef value, std::size_t& result) {
if ( value.empty() || !Str::cisdigit(value[0]) )
{
return false;
}
result = std::stoul(value);
return true;
}
void Field::RunCommand(Str::StringRef defaultCommand) {
if (GetText().empty()) {
return;
}
std::string current = Str::UTF32To8(GetText());
if (current[0] == '/' or current[0] == '\\') {
Cmd::BufferCommandText(current.c_str() + 1, true);
} else if (defaultCommand.empty()) {
Cmd::BufferCommandText(current, true);
} else {
Cmd::BufferCommandText(defaultCommand + " " + Cmd::Escape(current), true);
}
AddToHistory(hist, std::move(current));
Clear();
}
std::string Escape(Str::StringRef text) {
if (text.empty()) {
return "\"\"";
}
bool escaped = false;
bool maybeComment = false;
std::string res = "\"";
for (char c: text) {
if (c == '\\') {
res.append("\\\\");
} else if (c == '\"') {
res.append("\\\"");
} else if (c == '$') {
res.append("\\$");
} else {
if (Str::cisspace(c) || c == ';') {
escaped = true;
}
res.push_back(c);
}
if (maybeComment && (c == '/' || c == '*')) {
escaped = true;
maybeComment = false;
} else if (c == '/') {
maybeComment = true;
} else {
maybeComment = false;
}
}
if (escaped) {
res += "\"";
} else {
res.erase(0, 1);
}
return res;
}