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prompt: rework tu support arrows and completion cycling

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This commit is contained in:
Maxime Coste 2011-09-14 19:15:09 +00:00
parent b59ad6a174
commit 635e76eb4c
2 changed files with 60 additions and 16 deletions
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3
src/completion.hh
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@ -15,6 +15,9 @@ struct Completions
size_t start;
size_t end;
Completions()
: start(0), end(0) {}
Completions(size_t start, size_t end)
: start(start), end(end) {}
};

73
src/main.cc
View File

@ -106,6 +106,12 @@ std::string prompt(const std::string& text,
clrtoeol();
std::string result;
size_t cursor_pos = 0;
Completions completions;
int current_completion = -1;
std::string text_before_completion;
while(true)
{
char c = getch();
@ -113,36 +119,71 @@ std::string prompt(const std::string& text,
{
case '\r':
return result;
case 4:
if (cursor_pos > 0)
--cursor_pos;
break;
case 5:
if (cursor_pos < result.length())
++cursor_pos;
break;
case 7:
if (not result.empty())
if (cursor_pos != 0)
{
move(max_y - 1, text.length() + result.length() - 1);
addch(' ');
result.resize(result.length() - 1);
move(max_y - 1, text.length() + result.length());
refresh();
result = result.substr(0, cursor_pos - 1)
+ result.substr(cursor_pos, std::string::npos);
--cursor_pos;
}
current_completion = -1;
break;
case 27:
throw prompt_aborted();
case '\t':
{
Completions completions = completer(result, result.length());
if (not completions.candidates.empty())
if (current_completion == -1)
{
const std::string& completion = completions.candidates[0];
move(max_y-1, text.length());
result = result.substr(0, completions.start) + completion;
addstr(result.c_str());
refresh();
completions = completer(result, result.length());
if (completions.candidates.empty())
break;
text_before_completion = result.substr(completions.start,
completions.end - completions.start);
}
++current_completion;
std::string completion;
if (current_completion >= completions.candidates.size())
{
if (current_completion == completions.candidates.size() and
std::find(completions.candidates.begin(), completions.candidates.end(), text_before_completion) == completions.candidates.end())
completion = text_before_completion;
else
{
current_completion = 0;
completion = completions.candidates[0];
}
}
else
completion = completions.candidates[current_completion];
move(max_y-1, text.length());
result = result.substr(0, completions.start) + completion;
cursor_pos = completions.start + completion.length();
break;
}
default:
result += c;
addch(c);
refresh();
current_completion = -1;
result = result.substr(0, cursor_pos) + c + result.substr(cursor_pos, std::string::npos);
++cursor_pos;
}
move(max_y - 1, text.length());
clrtoeol();
addstr(result.c_str());
move(max_y - 1, text.length() + cursor_pos);
refresh();
}
return result;
}