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File completion: when no files match entered text as prefix, try as regex

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This commit is contained in:
Maxime Coste 2012-12-12 13:51:15 +01:00
parent cfd7ee049a
commit 777a79d37c
1 changed files with 34 additions and 12 deletions
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44
src/completion.cc
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@ -13,6 +13,20 @@
namespace Kakoune
{
static boost::regex make_regex_ifp(const String& ex)
{
boost::regex result;
if (not ex.empty())
{
try
{
result = boost::regex(ex.c_str());
}
catch(boost::regex_error&) {}
}
return result;
}
CandidateList complete_filename(const Context& context,
const String& prefix,
ByteCount cursor_pos)
@ -22,10 +36,7 @@ CandidateList complete_filename(const Context& context,
String dirprefix;
String fileprefix = real_prefix;
String ignored_files = context.options()["ignored_files"].as_string();
boost::regex ignored_files_regex;
if (not ignored_files.empty())
ignored_files_regex = boost::regex(ignored_files.c_str());
boost::regex ignored_files = make_regex_ifp(context.options()["ignored_files"].as_string());
ByteCount dir_end = -1;
for (ByteCount i = 0; i < real_prefix.length(); ++i)
@ -41,36 +52,47 @@ CandidateList complete_filename(const Context& context,
}
DIR* dir = opendir(dirname.c_str());
auto closeDir = on_scope_end([=](){ closedir(dir); });
auto closeDir = on_scope_end([=]{ closedir(dir); });
CandidateList result;
if (not dir)
return result;
const bool check_ignored_files = not ignored_files.empty() and
not boost::regex_match(fileprefix.c_str(), ignored_files_regex);
not boost::regex_match(fileprefix.c_str(), ignored_files);
boost::regex file_regex = make_regex_ifp(fileprefix);
CandidateList regex_result;
while (dirent* entry = readdir(dir))
{
String filename = entry->d_name;
if (filename.empty())
continue;
if (check_ignored_files and
boost::regex_match(filename.c_str(), ignored_files_regex))
if (check_ignored_files and boost::regex_match(filename.c_str(), ignored_files))
continue;
if (filename.substr(0, fileprefix.length()) == fileprefix)
const bool match_prefix = (filename.substr(0, fileprefix.length()) == fileprefix);
const bool match_regex = not file_regex.empty() and
boost::regex_match(filename.c_str(), file_regex);
if (match_prefix or match_regex)
{
String name = dirprefix + filename;
if (entry->d_type == DT_DIR)
name += '/';
if (fileprefix.length() != 0 or filename[0] != '.')
{
if (match_prefix)
result.push_back(escape(name));
if (match_regex)
regex_result.push_back(escape(name));
}
}
std::sort(result.begin(), result.end());
return result;
}
CandidateList& real_result = result.empty() ? regex_result : result;
std::sort(real_result.begin(), real_result.end());
return real_result;
}
}