Bananymous
/
banan-os
1
1
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Kernel: Shell now 'properly' parses commandline

This commit is contained in:
Bananymous 2023-01-16 20:08:13 +02:00
parent fd16c1cf58
commit 7540fa0385
2 changed files with 79 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
kernel/include/kernel/Shell.h
View File

@ -18,7 +18,8 @@ namespace Kernel
private:
void ReRenderBuffer() const;
void ProcessCommand(const BAN::Vector<BAN::StringView>&);
BAN::Vector<BAN::String> ParseArguments(BAN::StringView) const;
void ProcessCommand(const BAN::Vector<BAN::String>&);
void KeyEventCallback(Input::KeyEvent);
void MouseMoveEventCallback(Input::MouseMoveEvent);

79
kernel/kernel/Shell.cpp
View File

@ -11,6 +11,8 @@
#include <kernel/Shell.h>
#include <kernel/TTY.h>
#include <ctype.h>
#define TTY_PRINT(...) Formatter::print([this](char c) { m_tty->PutChar(c); }, __VA_ARGS__)
#define TTY_PRINTLN(...) Formatter::println([this](char c) { m_tty->PutChar(c); }, __VA_ARGS__)
@ -82,7 +84,80 @@ namespace Kernel
}
}
void Shell::ProcessCommand(const Vector<StringView>& arguments)
Vector<String> Shell::ParseArguments(StringView command) const
{
Vector<String> result;
while (!command.Empty())
{
while (!command.Empty() && isspace(command.Front()))
command = command.Substring(1);
if (command.Empty())
break;
MUST(result.PushBack(""_sv));
char quoted = '\0';
bool escape = false;
while (!command.Empty())
{
char ch = command.Front();
switch (ch)
{
case '"':
case '\'':
if (!quoted)
quoted = ch;
else if (ch == quoted)
quoted = '\0';
else
goto default_case;
break;
case '\\':
if (escape)
goto default_case;
escape = true;
break;
default:
default_case:
if (isspace(ch) && !quoted && !escape)
goto argument_done;
if (quoted && escape)
{
switch (ch)
{
case 'f': MUST(result.Back().PushBack('\f')); break;
case 'n': MUST(result.Back().PushBack('\n')); break;
case 'r': MUST(result.Back().PushBack('\r')); break;
case 't': MUST(result.Back().PushBack('\t')); break;
case 'v': MUST(result.Back().PushBack('\v')); break;
case '"': MUST(result.Back().PushBack('"')); break;
case '\'': MUST(result.Back().PushBack('\'')); break;
case '\\': MUST(result.Back().PushBack('\\')); break;
default:
char buffer[3] { '\\', ch, '\0' };
MUST(result.Back().Append(buffer));
break;
}
}
else
{
MUST(result.Back().PushBack(ch));
}
escape = false;
break;
}
command = command.Substring(1);
}
argument_done:
continue;
}
return result;
}
void Shell::ProcessCommand(const Vector<String>& arguments)
{
if (arguments.Empty())
{
@ -262,7 +337,7 @@ namespace Kernel
case Input::Key::NumpadEnter:
{
TTY_PRINTLN("");
auto arguments = MUST(current_buffer.SV().Split(' '));
auto arguments = ParseArguments(current_buffer.SV());
if (!arguments.Empty())
{
ProcessCommand(arguments);