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Use RankedMatch for filename based completion (file and command completion)

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This commit is contained in:
Maxime Coste 2016-03-02 13:51:16 +00:00
parent 1fd7e80f04
commit 6d5900af16
1 changed files with 56 additions and 51 deletions
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93
src/file.cc
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@ -3,6 +3,7 @@
#include "assert.hh"
#include "buffer.hh"
#include "unicode.hh"
#include "ranked_match.hh"
#include "regex.hh"
#include "string.hh"
@ -333,8 +334,7 @@ void make_directory(StringView dir)
}
template<typename Filter>
Vector<String> list_files(StringView prefix, StringView dirname,
Filter filter)
Vector<String> list_files(StringView dirname, Filter filter)
{
char buffer[PATH_MAX+1];
format_to(buffer, "{}", dirname);
@ -345,21 +345,13 @@ Vector<String> list_files(StringView prefix, StringView dirname,
auto closeDir = on_scope_end([=]{ closedir(dir); });
Vector<String> result;
Vector<String> subseq_result;
while (dirent* entry = readdir(dir))
{
if (not filter(*entry))
continue;
StringView filename = entry->d_name;
if (filename.empty())
if (filename.empty() or not filter(*entry))
continue;
const bool match_prefix = prefix_match(filename, prefix);
const bool match_subseq = subsequence_match(filename, prefix);
struct stat st;
if (match_prefix or match_subseq)
{
auto fmt_str = (dirname.empty() or dirname.back() == '/') ? "{}{}" : "{}/{}";
format_to(buffer, fmt_str, dirname, filename);
if (stat(buffer, &st) != 0)
@ -367,21 +359,25 @@ Vector<String> list_files(StringView prefix, StringView dirname,
if (S_ISDIR(st.st_mode))
filename = format_to(buffer, "{}/", filename);
if (prefix.length() != 0 or filename[0_byte] != '.')
{
if (match_prefix)
result.push_back(filename.str());
if (match_subseq)
subseq_result.push_back(filename.str());
}
}
}
return result.empty() ? subseq_result : result;
return result;
}
Vector<String> list_files(StringView directory)
{
return list_files("", directory, [](const dirent&) { return true; });
return list_files(directory, [](const dirent& entry) {
return StringView{entry.d_name}.substr(0_byte, 1_byte) != ".";
});
}
static CandidateList candidates(ConstArrayView<RankedMatch> matches, StringView dirname)
{
CandidateList res;
res.reserve(matches.size());
for (auto& match : matches)
res.push_back(dirname + match.candidate());
return res;
}
CandidateList complete_filename(StringView prefix,
@ -394,17 +390,22 @@ CandidateList complete_filename(StringView prefix,
const bool check_ignored_regex = not ignored_regex.empty() and
not regex_match(fileprefix.begin(), fileprefix.end(), ignored_regex);
const bool include_hidden = fileprefix.substr(0_byte, 1_byte) == ".";
auto filter = [&ignored_regex, check_ignored_regex](const dirent& entry)
auto filter = [&ignored_regex, check_ignored_regex, include_hidden](const dirent& entry)
{
return not check_ignored_regex or
not regex_match(entry.d_name, ignored_regex);
return (include_hidden or StringView{entry.d_name}.substr(0_byte, 1_byte) != ".") and
(not check_ignored_regex or not regex_match(entry.d_name, ignored_regex));
};
Vector<String> res = list_files(fileprefix, dirname, filter);
for (auto& file : res)
file = dirname + file;
std::sort(res.begin(), res.end());
return res;
auto files = list_files(dirname, filter);
Vector<RankedMatch> matches;
for (auto& file : files)
{
if (RankedMatch match{file, fileprefix})
matches.push_back(match);
}
std::sort(matches.begin(), matches.end());
return candidates(matches, dirname);
}
Vector<String> complete_command(StringView prefix, ByteCount cursor_pos)
@ -415,11 +416,11 @@ Vector<String> complete_command(StringView prefix, ByteCount cursor_pos)
if (not dirname.empty())
{
char buffer[PATH_MAX+1];
auto filter = [&dirname, &buffer](const dirent& entry)
auto filter = [&dirname](const dirent& entry)
{
struct stat st;
char buffer[PATH_MAX+1];
format_to(buffer, "{}{}", dirname, entry.d_name);
struct stat st;
if (stat(buffer, &st) != 0)
return false;
bool executable = (st.st_mode & S_IXUSR)
@ -427,11 +428,15 @@ Vector<String> complete_command(StringView prefix, ByteCount cursor_pos)
| (st.st_mode & S_IXOTH);
return S_ISDIR(st.st_mode) or (S_ISREG(st.st_mode) and executable);
};
Vector<String> res = list_files(fileprefix, dirname, filter);
for (auto& file : res)
file = dirname + file;
std::sort(res.begin(), res.end());
return res;
auto files = list_files(dirname, filter);
Vector<RankedMatch> matches;
for (auto& file : files)
{
if (RankedMatch match{file, real_prefix})
matches.push_back(match);
}
std::sort(matches.begin(), matches.end());
return candidates(matches, dirname);
}
typedef decltype(stat::st_mtim) TimeSpec;
@ -443,7 +448,7 @@ Vector<String> complete_command(StringView prefix, ByteCount cursor_pos)
};
static UnorderedMap<String, CommandCache, MemoryDomain::Commands> command_cache;
Vector<String> res;
Vector<RankedMatch> matches;
for (auto dir : split(getenv("PATH"), ':'))
{
auto dirname = ((not dir.empty() and dir.back() == '/') ? dir.substr(0, dir.length()-1) : dir).str();
@ -467,19 +472,19 @@ Vector<String> complete_command(StringView prefix, ByteCount cursor_pos)
return S_ISREG(st.st_mode) and executable;
};
cache.commands = list_files("", dirname, filter);
cache.commands = list_files(dirname, filter);
memcpy(&cache.mtim, &st.st_mtim, sizeof(TimeSpec));
}
for (auto& cmd : cache.commands)
{
if (prefix_match(cmd, fileprefix))
res.push_back(cmd);
if (RankedMatch match{cmd, fileprefix})
matches.push_back(match);
}
}
std::sort(res.begin(), res.end());
auto it = std::unique(res.begin(), res.end());
res.erase(it, res.end());
return res;
std::sort(matches.begin(), matches.end());
auto it = std::unique(matches.begin(), matches.end());
matches.erase(it, matches.end());
return candidates(matches, "");
}
timespec get_fs_timestamp(StringView filename)