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Shell: highlight runnable commands

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And display in red the command which will result in something like "no
command, or is directory" (inspired by the fish shell).
This commit is contained in:
Mathieu PATUREL 2020-08-03 10:04:27 +10:00 • committed by Andreas Kling
parent e799da1fb6
commit 2b4b9d212e
3 changed files with 23 additions and 1 deletions
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6
Shell/AST.cpp
View file

@ -367,9 +367,15 @@ RefPtr<Value> BarewordLiteral::run(RefPtr<Shell>)
void BarewordLiteral::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
{
if (metadata.is_first_in_list) {
if (shell.is_runnable(m_text))
editor.stylize({ m_position.start_offset, m_position.end_offset }, { Line::Style::Bold });
else {
editor.stylize({ m_position.start_offset, m_position.end_offset }, { Line::Style::Foreground(Line::Style::XtermColor::Red) });
}
return;
}
if (m_text.starts_with('-')) {
if (m_text == "--") {
editor.stylize({ m_position.start_offset, m_position.end_offset }, { Line::Style::Foreground(Line::Style::XtermColor::Green) });

15
Shell/Shell.cpp
View file

@ -386,6 +386,21 @@ String Shell::resolve_alias(const String& name) const
return m_aliases.get(name).value_or({});
}
bool Shell::is_runnable(const StringView& name)
{
// FIXME: for now, check aliases manually because cached path doesn't get
// updated with aliases. Should it?
if (!resolve_alias(name).is_null())
return true;
if (access(name.to_string().characters(), X_OK) == 0)
return true;
return !!binary_search(cached_path.span(), name.to_string(), [](const String& name, const String& program) -> int {
return strcmp(name.characters(), program.characters());
});
}
int Shell::run_command(const StringView& cmd)
{
if (cmd.is_empty())

1
Shell/Shell.h
View file

@ -73,6 +73,7 @@ public:
constexpr static auto global_init_file_path = "/etc/shellrc";
int run_command(const StringView&);
bool is_runnable(const StringView&);
RefPtr<Job> run_command(const AST::Command&);
Vector<RefPtr<Job>> run_commands(Vector<AST::Command>&);
bool run_file(const String&, bool explicitly_invoked = true);