3be77842db
fixes #3
467 lines
14 KiB
C++
467 lines
14 KiB
C++
#include "selectors.hh"
|
|
|
|
#include "string.hh"
|
|
|
|
#include <algorithm>
|
|
|
|
#include <boost/optional.hpp>
|
|
|
|
namespace Kakoune
|
|
{
|
|
|
|
Selection select_line(const Buffer& buffer, const Selection& selection)
|
|
{
|
|
Utf8Iterator first = buffer.iterator_at(selection.last());
|
|
if (*first == '\n' and first + 1 != buffer.end())
|
|
++first;
|
|
|
|
while (first != buffer.begin() and *(first - 1) != '\n')
|
|
--first;
|
|
|
|
Utf8Iterator last = first;
|
|
while (last + 1 != buffer.end() and *last != '\n')
|
|
++last;
|
|
return utf8_range(first, last);
|
|
}
|
|
|
|
Selection select_matching(const Buffer& buffer, const Selection& selection)
|
|
{
|
|
std::vector<Codepoint> matching_pairs = { '(', ')', '{', '}', '[', ']', '<', '>' };
|
|
Utf8Iterator it = buffer.iterator_at(selection.last());
|
|
std::vector<Codepoint>::iterator match = matching_pairs.end();
|
|
while (not is_eol(*it))
|
|
{
|
|
match = std::find(matching_pairs.begin(), matching_pairs.end(), *it);
|
|
if (match != matching_pairs.end())
|
|
break;
|
|
++it;
|
|
}
|
|
if (match == matching_pairs.end())
|
|
return selection;
|
|
|
|
Utf8Iterator begin = it;
|
|
|
|
if (((match - matching_pairs.begin()) % 2) == 0)
|
|
{
|
|
int level = 0;
|
|
const Codepoint opening = *match;
|
|
const Codepoint closing = *(match+1);
|
|
while (it != buffer.end())
|
|
{
|
|
if (*it == opening)
|
|
++level;
|
|
else if (*it == closing and --level == 0)
|
|
return utf8_range(begin, it);
|
|
++it;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int level = 0;
|
|
const Codepoint opening = *(match-1);
|
|
const Codepoint closing = *match;
|
|
while (true)
|
|
{
|
|
if (*it == closing)
|
|
++level;
|
|
else if (*it == opening and --level == 0)
|
|
return utf8_range(begin, it);
|
|
if (it == buffer.begin())
|
|
break;
|
|
--it;
|
|
}
|
|
}
|
|
return selection;
|
|
}
|
|
|
|
// c++14 will add std::optional, so we use boost::optional until then
|
|
using boost::optional;
|
|
static optional<Range> find_surrounding(const Buffer& buffer,
|
|
BufferCoord coord,
|
|
CodepointPair matching,
|
|
ObjectFlags flags, int init_level)
|
|
{
|
|
const bool to_begin = flags & ObjectFlags::ToBegin;
|
|
const bool to_end = flags & ObjectFlags::ToEnd;
|
|
const bool nestable = matching.first != matching.second;
|
|
auto pos = buffer.iterator_at(coord);
|
|
Utf8Iterator first = pos;
|
|
if (to_begin)
|
|
{
|
|
int level = nestable ? init_level : 0;
|
|
while (first != buffer.begin())
|
|
{
|
|
if (nestable and first != pos and *first == matching.second)
|
|
++level;
|
|
else if (*first == matching.first)
|
|
{
|
|
if (level == 0)
|
|
break;
|
|
else
|
|
--level;
|
|
}
|
|
--first;
|
|
}
|
|
if (level != 0 or *first != matching.first)
|
|
return optional<Range>{};
|
|
}
|
|
|
|
Utf8Iterator last = pos;
|
|
if (to_end)
|
|
{
|
|
int level = nestable ? init_level : 0;
|
|
while (last != buffer.end())
|
|
{
|
|
if (nestable and last != pos and *last == matching.first)
|
|
++level;
|
|
else if (*last == matching.second)
|
|
{
|
|
if (level == 0)
|
|
break;
|
|
else
|
|
--level;
|
|
}
|
|
++last;
|
|
}
|
|
if (level != 0 or last == buffer.end())
|
|
return optional<Range>{};
|
|
}
|
|
|
|
if (flags & ObjectFlags::Inner)
|
|
{
|
|
if (to_begin and first != last)
|
|
++first;
|
|
if (to_end and first != last)
|
|
--last;
|
|
}
|
|
return to_end ? utf8_range(first, last) : utf8_range(last, first);
|
|
}
|
|
|
|
Selection select_surrounding(const Buffer& buffer, const Selection& selection,
|
|
CodepointPair matching, int level,
|
|
ObjectFlags flags)
|
|
{
|
|
const bool nestable = matching.first != matching.second;
|
|
auto pos = selection.last();
|
|
if (not nestable or flags & ObjectFlags::Inner)
|
|
{
|
|
if (auto res = find_surrounding(buffer, pos, matching, flags, level))
|
|
return *res;
|
|
return selection;
|
|
}
|
|
|
|
auto c = buffer.byte_at(pos);
|
|
if ((flags == ObjectFlags::ToBegin and c == matching.first) or
|
|
(flags == ObjectFlags::ToEnd and c == matching.second))
|
|
++level;
|
|
|
|
auto res = find_surrounding(buffer, pos, matching, flags, level);
|
|
if (not res)
|
|
return selection;
|
|
|
|
if (flags == (ObjectFlags::ToBegin | ObjectFlags::ToEnd) and
|
|
res->min() == selection.min() and res->max() == selection.max())
|
|
{
|
|
if (auto res_parent = find_surrounding(buffer, pos, matching, flags, level+1))
|
|
return Selection{*res_parent};
|
|
}
|
|
return *res;
|
|
}
|
|
|
|
Selection select_to(const Buffer& buffer, const Selection& selection,
|
|
Codepoint c, int count, bool inclusive)
|
|
{
|
|
Utf8Iterator begin = buffer.iterator_at(selection.last());
|
|
Utf8Iterator end = begin;
|
|
do
|
|
{
|
|
++end;
|
|
skip_while(end, buffer.end(), [c](Codepoint cur) { return cur != c; });
|
|
if (end == buffer.end())
|
|
return selection;
|
|
}
|
|
while (--count > 0);
|
|
|
|
return utf8_range(begin, inclusive ? end : end-1);
|
|
}
|
|
|
|
Selection select_to_reverse(const Buffer& buffer, const Selection& selection,
|
|
Codepoint c, int count, bool inclusive)
|
|
{
|
|
Utf8Iterator begin = buffer.iterator_at(selection.last());
|
|
Utf8Iterator end = begin;
|
|
do
|
|
{
|
|
--end;
|
|
skip_while_reverse(end, buffer.begin(), [c](Codepoint cur) { return cur != c; });
|
|
if (end == buffer.begin())
|
|
return selection;
|
|
}
|
|
while (--count > 0);
|
|
|
|
return utf8_range(begin, inclusive ? end : end+1);
|
|
}
|
|
|
|
Selection select_to_eol(const Buffer& buffer, const Selection& selection)
|
|
{
|
|
Utf8Iterator begin = buffer.iterator_at(selection.last());
|
|
Utf8Iterator end = begin;
|
|
skip_while(end, buffer.end(), [](Codepoint cur) { return not is_eol(cur); });
|
|
return utf8_range(begin, end != begin ? end-1 : end);
|
|
}
|
|
|
|
Selection select_to_eol_reverse(const Buffer& buffer, const Selection& selection)
|
|
{
|
|
Utf8Iterator begin = buffer.iterator_at(selection.last());
|
|
Utf8Iterator end = begin - 1;
|
|
skip_while_reverse(end, buffer.begin(), [](Codepoint cur) { return not is_eol(cur); });
|
|
return utf8_range(begin, end == buffer.begin() ? end : end+1);
|
|
}
|
|
|
|
Selection select_whole_sentence(const Buffer& buffer, const Selection& selection, ObjectFlags flags)
|
|
{
|
|
BufferIterator first = buffer.iterator_at(selection.last());
|
|
BufferIterator last = first;
|
|
|
|
if (flags & ObjectFlags::ToBegin)
|
|
{
|
|
bool saw_non_blank = false;
|
|
while (first != buffer.begin())
|
|
{
|
|
char cur = *first;
|
|
char prev = *(first-1);
|
|
if (not is_blank(cur))
|
|
saw_non_blank = true;
|
|
if (is_eol(prev) and is_eol(cur))
|
|
{
|
|
++first;
|
|
break;
|
|
}
|
|
else if (prev == '.' or prev == ';' or prev == '!' or prev == '?')
|
|
{
|
|
if (saw_non_blank)
|
|
break;
|
|
else if (flags & ObjectFlags::ToEnd)
|
|
last = first-1;
|
|
}
|
|
--first;
|
|
}
|
|
skip_while(first, buffer.end(), is_blank);
|
|
}
|
|
if (flags & ObjectFlags::ToEnd)
|
|
{
|
|
while (last != buffer.end())
|
|
{
|
|
char cur = *last;
|
|
if (cur == '.' or cur == ';' or cur == '!' or cur == '?' or
|
|
(is_eol(cur) and (last+1 == buffer.end() or is_eol(*(last+1)))))
|
|
break;
|
|
++last;
|
|
}
|
|
if (not (flags & ObjectFlags::Inner) and last != buffer.end())
|
|
{
|
|
++last;
|
|
skip_while(last, buffer.end(), is_blank);
|
|
--last;
|
|
}
|
|
}
|
|
return (flags & ObjectFlags::ToEnd) ? Selection{first.coord(), last.coord()}
|
|
: Selection{last.coord(), first.coord()};
|
|
}
|
|
|
|
Selection select_whole_paragraph(const Buffer& buffer, const Selection& selection, ObjectFlags flags)
|
|
{
|
|
BufferIterator first = buffer.iterator_at(selection.last());
|
|
BufferIterator last = first;
|
|
|
|
if (flags & ObjectFlags::ToBegin and first != buffer.begin())
|
|
{
|
|
skip_while_reverse(first, buffer.begin(), is_eol);
|
|
if (flags & ObjectFlags::ToEnd)
|
|
last = first;
|
|
while (first != buffer.begin())
|
|
{
|
|
char cur = *first;
|
|
char prev = *(first-1);
|
|
if (is_eol(prev) and is_eol(cur))
|
|
{
|
|
++first;
|
|
break;
|
|
}
|
|
--first;
|
|
}
|
|
}
|
|
if (flags & ObjectFlags::ToEnd)
|
|
{
|
|
while (last != buffer.end())
|
|
{
|
|
char cur = *last;
|
|
char prev = *(last-1);
|
|
if (is_eol(cur) and is_eol(prev))
|
|
{
|
|
if (not (flags & ObjectFlags::Inner))
|
|
skip_while(last, buffer.end(), is_eol);
|
|
break;
|
|
}
|
|
++last;
|
|
}
|
|
--last;
|
|
}
|
|
return (flags & ObjectFlags::ToEnd) ? Selection{first.coord(), last.coord()}
|
|
: Selection{last.coord(), first.coord()};
|
|
}
|
|
|
|
static CharCount get_indent(const String& str, int tabstop)
|
|
{
|
|
CharCount indent = 0;
|
|
for (auto& c : str)
|
|
{
|
|
if (c == ' ')
|
|
++indent;
|
|
else if (c =='\t')
|
|
indent = (indent / tabstop + 1) * tabstop;
|
|
else
|
|
break;
|
|
}
|
|
return indent;
|
|
}
|
|
|
|
Selection select_whole_indent(const Buffer& buffer, const Selection& selection, ObjectFlags flags)
|
|
{
|
|
int tabstop = buffer.options()["tabstop"].get<int>();
|
|
LineCount line = selection.last().line;
|
|
auto indent = get_indent(buffer[line], tabstop);
|
|
|
|
LineCount begin_line = line - 1;
|
|
if (flags & ObjectFlags::ToBegin)
|
|
{
|
|
while (begin_line >= 0 and (buffer[begin_line] == "\n" or get_indent(buffer[begin_line], tabstop) >= indent))
|
|
--begin_line;
|
|
}
|
|
++begin_line;
|
|
LineCount end_line = line + 1;
|
|
if (flags & ObjectFlags::ToEnd)
|
|
{
|
|
LineCount end = buffer.line_count();
|
|
while (end_line < end and (buffer[end_line] == "\n" or get_indent(buffer[end_line], tabstop) >= indent))
|
|
++end_line;
|
|
}
|
|
--end_line;
|
|
BufferCoord first = begin_line;
|
|
// keep the first line indent in inner mode
|
|
if (flags & ObjectFlags::Inner)
|
|
{
|
|
CharCount i = 0;
|
|
for (; i < indent; ++first.column)
|
|
{
|
|
auto c = buffer.byte_at(first);
|
|
if (c == ' ')
|
|
++i;
|
|
if (c == '\t')
|
|
i = (i / tabstop + 1) * tabstop;
|
|
}
|
|
}
|
|
return Selection{first, {end_line, buffer[end_line].length() - 1}};
|
|
}
|
|
|
|
Selection select_whole_lines(const Buffer& buffer, const Selection& selection)
|
|
{
|
|
// no need to be utf8 aware for is_eol as we only use \n as line seperator
|
|
BufferIterator first = buffer.iterator_at(selection.first());
|
|
BufferIterator last = buffer.iterator_at(selection.last());
|
|
BufferIterator& to_line_start = first <= last ? first : last;
|
|
BufferIterator& to_line_end = first <= last ? last : first;
|
|
|
|
--to_line_start;
|
|
skip_while_reverse(to_line_start, buffer.begin(), [](char cur) { return not is_eol(cur); });
|
|
if (is_eol(*to_line_start))
|
|
++to_line_start;
|
|
|
|
skip_while(to_line_end, buffer.end(), [](char cur) { return not is_eol(cur); });
|
|
if (to_line_end == buffer.end())
|
|
--to_line_end;
|
|
|
|
return Selection(first.coord(), last.coord());
|
|
}
|
|
|
|
Selection trim_partial_lines(const Buffer& buffer, const Selection& selection)
|
|
{
|
|
// same as select_whole_lines
|
|
BufferIterator first = buffer.iterator_at(selection.first());
|
|
BufferIterator last = buffer.iterator_at(selection.last());
|
|
BufferIterator& to_line_start = first <= last ? first : last;
|
|
BufferIterator& to_line_end = first <= last ? last : first;
|
|
|
|
while (to_line_start != buffer.begin() and *(to_line_start-1) != '\n')
|
|
++to_line_start;
|
|
while (*(to_line_end+1) != '\n' and to_line_end != to_line_start)
|
|
--to_line_end;
|
|
|
|
return Selection(first.coord(), last.coord());
|
|
}
|
|
|
|
void select_whole_buffer(const Buffer& buffer, SelectionList& selections)
|
|
{
|
|
selections = SelectionList{ Selection({0,0}, buffer.back_coord()) };
|
|
}
|
|
|
|
void select_all_matches(const Buffer& buffer, SelectionList& selections,
|
|
const Regex& regex)
|
|
{
|
|
SelectionList result;
|
|
for (auto& sel : selections)
|
|
{
|
|
auto sel_end = utf8::next(buffer.iterator_at(sel.max()));
|
|
RegexIterator re_it(buffer.iterator_at(sel.min()), sel_end, regex);
|
|
RegexIterator re_end;
|
|
|
|
for (; re_it != re_end; ++re_it)
|
|
{
|
|
auto& begin = (*re_it)[0].first;
|
|
auto& end = (*re_it)[0].second;
|
|
|
|
if (begin == sel_end)
|
|
continue;
|
|
|
|
CaptureList captures;
|
|
for (auto& match : *re_it)
|
|
captures.emplace_back(match.first, match.second);
|
|
|
|
result.emplace_back(begin.coord(),
|
|
(begin == end ? end : utf8::previous(end)).coord(),
|
|
std::move(captures));
|
|
}
|
|
}
|
|
if (result.empty())
|
|
throw runtime_error("nothing selected");
|
|
result.set_main_index(result.size() - 1);
|
|
selections = std::move(result);
|
|
}
|
|
|
|
void split_selections(const Buffer& buffer, SelectionList& selections,
|
|
const Regex& regex)
|
|
{
|
|
SelectionList result;
|
|
for (auto& sel : selections)
|
|
{
|
|
auto begin = buffer.iterator_at(sel.min());
|
|
auto sel_end = utf8::next(buffer.iterator_at(sel.max()));
|
|
RegexIterator re_it(begin, sel_end, regex,
|
|
boost::regex_constants::match_nosubs);
|
|
RegexIterator re_end;
|
|
|
|
for (; re_it != re_end; ++re_it)
|
|
{
|
|
BufferIterator end = (*re_it)[0].first;
|
|
|
|
result.emplace_back(begin.coord(), (begin == end) ? end.coord() : utf8::previous(end).coord());
|
|
begin = (*re_it)[0].second;
|
|
}
|
|
result.emplace_back(begin.coord(), sel.max());
|
|
}
|
|
result.set_main_index(result.size() - 1);
|
|
selections = std::move(result);
|
|
}
|
|
|
|
}
|