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Add configurable prompt completion behaviour

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If option 'complete_prefix' is non 0, then completion first
use completion candidates common prefix, then circle through
candidates.
This commit is contained in:
Maxime Coste 2012-11-29 19:56:34 +01:00
parent 7dc634444d
commit 33482b0979
2 changed files with 36 additions and 7 deletions
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38
src/input_handler.cc
View File

@ -227,6 +227,24 @@ private:
LineEditor m_filter_editor;
};
String common_prefix(const memoryview<String>& strings)
{
String res;
if (strings.empty())
return res;
res = strings[0];
for (auto& str : strings)
{
ByteCount len = std::min(res.length(), str.length());
ByteCount common_len = 0;
while (common_len < len and str[common_len] == res[common_len])
++common_len;
if (common_len != res.length())
res = res.substr(0, common_len);
}
return res;
}
class Prompt : public InputMode
{
public:
@ -332,15 +350,25 @@ public:
context.ui().menu_hide();
DisplayCoord menu_pos{ context.window().dimensions().line, 0_char };
context.ui().menu_show(candidates, menu_pos, MenuStyle::Prompt);
String prefix = line.substr(m_completions.start,
bool use_common_prefix = context.options()["complete_prefix"].as_int();
String prefix = use_common_prefix ?
common_prefix(candidates)
: line.substr(m_completions.start,
m_completions.end - m_completions.start);
if (not contains(candidates, prefix))
auto it = find(candidates, prefix);
if (it == candidates.end())
{
m_current_completion = use_common_prefix ? candidates.size() : 0;
candidates.push_back(std::move(prefix));
}
if (not reverse and ++m_current_completion >= candidates.size())
else
m_current_completion = use_common_prefix ? it - candidates.begin() : 0;
}
else if (not reverse and ++m_current_completion >= candidates.size())
m_current_completion = 0;
if (reverse and --m_current_completion < 0)
else if (reverse and --m_current_completion < 0)
m_current_completion = candidates.size()-1;
const String& completion = candidates[m_current_completion];

1
src/option_manager.cc
View File

@ -97,6 +97,7 @@ GlobalOptions::GlobalOptions()
set_option("indentwidth", Option(4));
set_option("eolformat", Option("lf"));
set_option("BOM", Option("no"));
set_option("complete_prefix", Option(1));
}
}