mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 07:30:19 +00:00
771 lines
24 KiB
C++
771 lines
24 KiB
C++
/*
|
|
* Copyright (c) 2020, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/CharacterTypes.h>
|
|
#include <AK/ScopeGuard.h>
|
|
#include <AK/ScopedValueRollback.h>
|
|
#include <AK/StringBuilder.h>
|
|
#include <AK/TemporaryChange.h>
|
|
#include <LibCore/File.h>
|
|
#include <LibLine/Editor.h>
|
|
#include <stdio.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
namespace Line {
|
|
|
|
Function<bool(Editor&)> Editor::find_internal_function(StringView name)
|
|
{
|
|
#define __ENUMERATE(internal_name) \
|
|
if (name == #internal_name) \
|
|
return EDITOR_INTERNAL_FUNCTION(internal_name);
|
|
|
|
ENUMERATE_EDITOR_INTERNAL_FUNCTIONS(__ENUMERATE)
|
|
|
|
return {};
|
|
}
|
|
|
|
void Editor::search_forwards()
|
|
{
|
|
ScopedValueRollback inline_search_cursor_rollback { m_inline_search_cursor };
|
|
StringBuilder builder;
|
|
builder.append(Utf32View { m_buffer.data(), m_inline_search_cursor });
|
|
auto search_phrase = builder.to_byte_string();
|
|
if (m_search_offset_state == SearchOffsetState::Backwards)
|
|
--m_search_offset;
|
|
if (m_search_offset > 0) {
|
|
ScopedValueRollback search_offset_rollback { m_search_offset };
|
|
--m_search_offset;
|
|
if (search(search_phrase, true)) {
|
|
m_search_offset_state = SearchOffsetState::Forwards;
|
|
search_offset_rollback.set_override_rollback_value(m_search_offset);
|
|
} else {
|
|
m_search_offset_state = SearchOffsetState::Unbiased;
|
|
}
|
|
} else {
|
|
m_search_offset_state = SearchOffsetState::Unbiased;
|
|
m_chars_touched_in_the_middle = buffer().size();
|
|
m_cursor = 0;
|
|
m_buffer.clear();
|
|
insert(search_phrase);
|
|
m_refresh_needed = true;
|
|
}
|
|
}
|
|
|
|
void Editor::search_backwards()
|
|
{
|
|
ScopedValueRollback inline_search_cursor_rollback { m_inline_search_cursor };
|
|
StringBuilder builder;
|
|
builder.append(Utf32View { m_buffer.data(), m_inline_search_cursor });
|
|
auto search_phrase = builder.to_byte_string();
|
|
if (m_search_offset_state == SearchOffsetState::Forwards)
|
|
++m_search_offset;
|
|
if (search(search_phrase, true)) {
|
|
m_search_offset_state = SearchOffsetState::Backwards;
|
|
++m_search_offset;
|
|
} else {
|
|
m_search_offset_state = SearchOffsetState::Unbiased;
|
|
--m_search_offset;
|
|
}
|
|
}
|
|
|
|
void Editor::cursor_left_word()
|
|
{
|
|
auto has_seen_alnum = false;
|
|
while (m_cursor) {
|
|
// after seeing at least one alnum, stop just before a non-alnum
|
|
if (not is_ascii_alphanumeric(m_buffer[m_cursor - 1])) {
|
|
if (has_seen_alnum)
|
|
break;
|
|
} else {
|
|
has_seen_alnum = true;
|
|
}
|
|
|
|
--m_cursor;
|
|
}
|
|
m_inline_search_cursor = m_cursor;
|
|
}
|
|
|
|
void Editor::cursor_left_nonspace_word()
|
|
{
|
|
auto has_seen_nonspace = false;
|
|
while (m_cursor) {
|
|
// after seeing at least one non-space, stop just before a space
|
|
if (is_ascii_space(m_buffer[m_cursor - 1])) {
|
|
if (has_seen_nonspace)
|
|
break;
|
|
} else {
|
|
has_seen_nonspace = true;
|
|
}
|
|
|
|
--m_cursor;
|
|
}
|
|
m_inline_search_cursor = m_cursor;
|
|
}
|
|
|
|
void Editor::cursor_left_character()
|
|
{
|
|
if (m_cursor > 0) {
|
|
size_t closest_cursor_left_offset;
|
|
binary_search(m_cached_buffer_metrics.grapheme_breaks, m_cursor - 1, &closest_cursor_left_offset);
|
|
m_cursor = m_cached_buffer_metrics.grapheme_breaks[closest_cursor_left_offset];
|
|
}
|
|
m_inline_search_cursor = m_cursor;
|
|
}
|
|
|
|
void Editor::cursor_right_word()
|
|
{
|
|
auto has_seen_alnum = false;
|
|
while (m_cursor < m_buffer.size()) {
|
|
// after seeing at least one alnum, stop at the first non-alnum
|
|
if (not is_ascii_alphanumeric(m_buffer[m_cursor])) {
|
|
if (has_seen_alnum)
|
|
break;
|
|
} else {
|
|
has_seen_alnum = true;
|
|
}
|
|
|
|
++m_cursor;
|
|
}
|
|
m_inline_search_cursor = m_cursor;
|
|
m_search_offset = 0;
|
|
}
|
|
|
|
void Editor::cursor_right_nonspace_word()
|
|
{
|
|
auto has_seen_nonspace = false;
|
|
while (m_cursor < m_buffer.size()) {
|
|
// after seeing at least one non-space, stop at the first space
|
|
if (is_ascii_space(m_buffer[m_cursor])) {
|
|
if (has_seen_nonspace)
|
|
break;
|
|
} else {
|
|
has_seen_nonspace = true;
|
|
}
|
|
|
|
++m_cursor;
|
|
}
|
|
m_inline_search_cursor = m_cursor;
|
|
m_search_offset = 0;
|
|
}
|
|
|
|
void Editor::cursor_right_character()
|
|
{
|
|
if (m_cursor < m_buffer.size()) {
|
|
size_t closest_cursor_left_offset;
|
|
binary_search(m_cached_buffer_metrics.grapheme_breaks, m_cursor, &closest_cursor_left_offset);
|
|
m_cursor = closest_cursor_left_offset + 1 >= m_cached_buffer_metrics.grapheme_breaks.size()
|
|
? m_buffer.size()
|
|
: m_cached_buffer_metrics.grapheme_breaks[closest_cursor_left_offset + 1];
|
|
}
|
|
m_inline_search_cursor = m_cursor;
|
|
m_search_offset = 0;
|
|
}
|
|
|
|
void Editor::erase_character_backwards()
|
|
{
|
|
if (m_is_searching) {
|
|
return;
|
|
}
|
|
if (m_cursor == 0) {
|
|
fputc('\a', stderr);
|
|
fflush(stderr);
|
|
return;
|
|
}
|
|
|
|
size_t closest_cursor_left_offset;
|
|
binary_search(m_cached_buffer_metrics.grapheme_breaks, m_cursor - 1, &closest_cursor_left_offset);
|
|
auto start_of_previous_grapheme = m_cached_buffer_metrics.grapheme_breaks[closest_cursor_left_offset];
|
|
for (; m_cursor > start_of_previous_grapheme; --m_cursor)
|
|
remove_at_index(m_cursor - 1);
|
|
|
|
m_inline_search_cursor = m_cursor;
|
|
// We will have to redraw :(
|
|
m_refresh_needed = true;
|
|
}
|
|
|
|
void Editor::erase_character_forwards()
|
|
{
|
|
if (m_cursor == m_buffer.size()) {
|
|
fputc('\a', stderr);
|
|
fflush(stderr);
|
|
return;
|
|
}
|
|
|
|
size_t closest_cursor_left_offset;
|
|
binary_search(m_cached_buffer_metrics.grapheme_breaks, m_cursor, &closest_cursor_left_offset);
|
|
auto end_of_next_grapheme = closest_cursor_left_offset + 1 >= m_cached_buffer_metrics.grapheme_breaks.size()
|
|
? m_buffer.size()
|
|
: m_cached_buffer_metrics.grapheme_breaks[closest_cursor_left_offset + 1];
|
|
for (auto cursor = m_cursor; cursor < end_of_next_grapheme; ++cursor)
|
|
remove_at_index(m_cursor);
|
|
m_refresh_needed = true;
|
|
}
|
|
|
|
void Editor::finish_edit()
|
|
{
|
|
fprintf(stderr, "<EOF>\n");
|
|
if (!m_always_refresh) {
|
|
m_input_error = Error::Eof;
|
|
finish();
|
|
really_quit_event_loop().release_value_but_fixme_should_propagate_errors();
|
|
}
|
|
}
|
|
|
|
void Editor::kill_line()
|
|
{
|
|
if (m_cursor == 0)
|
|
return;
|
|
|
|
m_last_erased.clear_with_capacity();
|
|
|
|
for (size_t i = 0; i < m_cursor; ++i) {
|
|
m_last_erased.append(m_buffer[0]);
|
|
remove_at_index(0);
|
|
}
|
|
m_cursor = 0;
|
|
m_inline_search_cursor = m_cursor;
|
|
m_refresh_needed = true;
|
|
}
|
|
|
|
void Editor::erase_word_backwards()
|
|
{
|
|
if (m_cursor == 0)
|
|
return;
|
|
|
|
m_last_erased.clear_with_capacity();
|
|
|
|
// A word here is space-separated. `foo=bar baz` is two words.
|
|
bool has_seen_nonspace = false;
|
|
while (m_cursor > 0) {
|
|
if (is_ascii_space(m_buffer[m_cursor - 1])) {
|
|
if (has_seen_nonspace)
|
|
break;
|
|
} else {
|
|
has_seen_nonspace = true;
|
|
}
|
|
|
|
m_last_erased.append(m_buffer[m_cursor - 1]);
|
|
erase_character_backwards();
|
|
}
|
|
|
|
m_last_erased.reverse();
|
|
}
|
|
|
|
void Editor::erase_to_end()
|
|
{
|
|
if (m_cursor == m_buffer.size())
|
|
return;
|
|
|
|
m_last_erased.clear_with_capacity();
|
|
|
|
while (m_cursor < m_buffer.size()) {
|
|
m_last_erased.append(m_buffer[m_cursor]);
|
|
erase_character_forwards();
|
|
}
|
|
}
|
|
|
|
void Editor::erase_to_beginning()
|
|
{
|
|
}
|
|
|
|
void Editor::insert_last_erased()
|
|
{
|
|
insert(Utf32View { m_last_erased.data(), m_last_erased.size() });
|
|
}
|
|
|
|
void Editor::transpose_characters()
|
|
{
|
|
if (m_cursor > 0 && m_buffer.size() >= 2) {
|
|
if (m_cursor < m_buffer.size())
|
|
++m_cursor;
|
|
swap(m_buffer[m_cursor - 1], m_buffer[m_cursor - 2]);
|
|
// FIXME: Update anchored styles too.
|
|
m_refresh_needed = true;
|
|
m_chars_touched_in_the_middle += 2;
|
|
}
|
|
}
|
|
|
|
void Editor::enter_search()
|
|
{
|
|
if (m_is_searching) {
|
|
// How did we get here?
|
|
VERIFY_NOT_REACHED();
|
|
} else {
|
|
m_is_searching = true;
|
|
m_search_offset = 0;
|
|
m_pre_search_buffer.clear();
|
|
for (auto code_point : m_buffer)
|
|
m_pre_search_buffer.append(code_point);
|
|
m_pre_search_cursor = m_cursor;
|
|
|
|
ensure_free_lines_from_origin(1 + num_lines());
|
|
|
|
// Disable our own notifier so as to avoid interfering with the search editor.
|
|
m_notifier->set_enabled(false);
|
|
|
|
m_search_editor = Editor::construct(Configuration { Configuration::Eager, Configuration::NoSignalHandlers }); // Has anyone seen 'Inception'?
|
|
m_search_editor->initialize();
|
|
add_child(*m_search_editor);
|
|
|
|
m_search_editor->on_display_refresh = [this](Editor& search_editor) {
|
|
// Remove the search editor prompt before updating ourselves (this avoids artifacts when we move the search editor around).
|
|
search_editor.cleanup().release_value_but_fixme_should_propagate_errors();
|
|
|
|
StringBuilder builder;
|
|
builder.append(Utf32View { search_editor.buffer().data(), search_editor.buffer().size() });
|
|
if (!search(builder.to_byte_string(), false, false)) {
|
|
m_chars_touched_in_the_middle = m_buffer.size();
|
|
m_refresh_needed = true;
|
|
m_buffer.clear();
|
|
m_cursor = 0;
|
|
}
|
|
|
|
refresh_display().release_value_but_fixme_should_propagate_errors();
|
|
|
|
// Move the search prompt below ours and tell it to redraw itself.
|
|
auto prompt_end_line = current_prompt_metrics().lines_with_addition(m_cached_buffer_metrics, m_num_columns);
|
|
search_editor.set_origin(prompt_end_line + m_origin_row, 1);
|
|
search_editor.m_refresh_needed = true;
|
|
};
|
|
|
|
// Whenever the search editor gets a ^R, cycle between history entries.
|
|
m_search_editor->register_key_input_callback(ctrl('R'), [this](Editor& search_editor) {
|
|
++m_search_offset;
|
|
search_editor.m_refresh_needed = true;
|
|
return false; // Do not process this key event
|
|
});
|
|
|
|
// ^C should cancel the search.
|
|
m_search_editor->register_key_input_callback(ctrl('C'), [this](Editor& search_editor) {
|
|
search_editor.finish();
|
|
m_reset_buffer_on_search_end = true;
|
|
search_editor.end_search();
|
|
search_editor.deferred_invoke([&search_editor] { search_editor.really_quit_event_loop().release_value_but_fixme_should_propagate_errors(); });
|
|
return false;
|
|
});
|
|
|
|
// Whenever the search editor gets a backspace, cycle back between history entries
|
|
// unless we're at the zeroth entry, in which case, allow the deletion.
|
|
m_search_editor->register_key_input_callback(m_termios.c_cc[VERASE], [this](Editor& search_editor) {
|
|
if (m_search_offset > 0) {
|
|
--m_search_offset;
|
|
search_editor.m_refresh_needed = true;
|
|
return false; // Do not process this key event
|
|
}
|
|
|
|
search_editor.erase_character_backwards();
|
|
return false;
|
|
});
|
|
|
|
// ^L - This is a source of issues, as the search editor refreshes first,
|
|
// and we end up with the wrong order of prompts, so we will first refresh
|
|
// ourselves, then refresh the search editor, and then tell him not to process
|
|
// this event.
|
|
m_search_editor->register_key_input_callback(ctrl('L'), [this](auto& search_editor) {
|
|
fprintf(stderr, "\033[3J\033[H\033[2J"); // Clear screen.
|
|
|
|
// refresh our own prompt
|
|
{
|
|
TemporaryChange refresh_change { m_always_refresh, true };
|
|
set_origin(1, 1);
|
|
m_refresh_needed = true;
|
|
refresh_display().release_value_but_fixme_should_propagate_errors();
|
|
}
|
|
|
|
// move the search prompt below ours
|
|
// and tell it to redraw itself
|
|
auto prompt_end_line = current_prompt_metrics().lines_with_addition(m_cached_buffer_metrics, m_num_columns);
|
|
search_editor.set_origin(prompt_end_line + 1, 1);
|
|
search_editor.m_refresh_needed = true;
|
|
|
|
return false;
|
|
});
|
|
|
|
// quit without clearing the current buffer
|
|
m_search_editor->register_key_input_callback('\t', [this](Editor& search_editor) {
|
|
search_editor.finish();
|
|
m_reset_buffer_on_search_end = false;
|
|
return false;
|
|
});
|
|
|
|
auto search_prompt = "\x1b[32msearch:\x1b[0m "sv;
|
|
|
|
// While the search editor is active, we do not want editing events.
|
|
m_is_editing = false;
|
|
|
|
auto search_string_result = m_search_editor->get_line(search_prompt);
|
|
|
|
// Grab where the search origin last was, anything up to this point will be cleared.
|
|
auto search_end_row = m_search_editor->m_origin_row;
|
|
|
|
remove_child(*m_search_editor);
|
|
m_search_editor = nullptr;
|
|
m_is_searching = false;
|
|
m_is_editing = true;
|
|
m_search_offset = 0;
|
|
|
|
// Re-enable the notifier after discarding the search editor.
|
|
m_notifier->set_enabled(true);
|
|
|
|
if (search_string_result.is_error()) {
|
|
// Somethine broke, fail
|
|
m_input_error = search_string_result.error();
|
|
finish();
|
|
return;
|
|
}
|
|
|
|
auto& search_string = search_string_result.value();
|
|
|
|
// Manually cleanup the search line.
|
|
auto stderr_stream = Core::File::standard_error().release_value_but_fixme_should_propagate_errors();
|
|
reposition_cursor(*stderr_stream).release_value_but_fixme_should_propagate_errors();
|
|
auto search_metrics = actual_rendered_string_metrics(search_string, {});
|
|
auto metrics = actual_rendered_string_metrics(search_prompt, {});
|
|
VT::clear_lines(0, metrics.lines_with_addition(search_metrics, m_num_columns) + search_end_row - m_origin_row - 1, *stderr_stream).release_value_but_fixme_should_propagate_errors();
|
|
|
|
reposition_cursor(*stderr_stream).release_value_but_fixme_should_propagate_errors();
|
|
|
|
m_refresh_needed = true;
|
|
m_cached_prompt_valid = false;
|
|
m_chars_touched_in_the_middle = 1;
|
|
|
|
if (!m_reset_buffer_on_search_end || search_metrics.total_length == 0) {
|
|
// If the entry was empty, or we purposely quit without a newline,
|
|
// do not return anything; instead, just end the search.
|
|
end_search();
|
|
return;
|
|
}
|
|
|
|
// Return the string,
|
|
finish();
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
Optional<u32> read_unicode_char()
|
|
{
|
|
// FIXME: It would be ideal to somehow communicate that the line editor is
|
|
// not operating in a normal mode and expects a character during the unicode
|
|
// read (cursor mode? change current cell? change prompt? Something else?)
|
|
StringBuilder builder;
|
|
|
|
for (int i = 0; i < 4; ++i) {
|
|
char c = 0;
|
|
auto nread = read(0, &c, 1);
|
|
|
|
if (nread <= 0)
|
|
return {};
|
|
|
|
builder.append(c);
|
|
|
|
Utf8View search_char_utf8_view { builder.string_view() };
|
|
|
|
if (search_char_utf8_view.validate())
|
|
return *search_char_utf8_view.begin();
|
|
}
|
|
|
|
return {};
|
|
}
|
|
}
|
|
|
|
void Editor::search_character_forwards()
|
|
{
|
|
auto optional_search_char = read_unicode_char();
|
|
if (not optional_search_char.has_value())
|
|
return;
|
|
u32 search_char = optional_search_char.value();
|
|
|
|
for (auto index = m_cursor + 1; index < m_buffer.size(); ++index) {
|
|
if (m_buffer[index] == search_char) {
|
|
m_cursor = index;
|
|
return;
|
|
}
|
|
}
|
|
|
|
fputc('\a', stderr);
|
|
fflush(stderr);
|
|
}
|
|
|
|
void Editor::search_character_backwards()
|
|
{
|
|
auto optional_search_char = read_unicode_char();
|
|
if (not optional_search_char.has_value())
|
|
return;
|
|
u32 search_char = optional_search_char.value();
|
|
|
|
for (auto index = m_cursor; index > 0; --index) {
|
|
if (m_buffer[index - 1] == search_char) {
|
|
m_cursor = index - 1;
|
|
return;
|
|
}
|
|
}
|
|
|
|
fputc('\a', stderr);
|
|
fflush(stderr);
|
|
}
|
|
|
|
void Editor::transpose_words()
|
|
{
|
|
// A word here is contiguous alnums. `foo=bar baz` is three words.
|
|
|
|
// 'abcd,.:efg...' should become 'efg...,.:abcd' if caret is after
|
|
// 'efg...'. If it's in 'efg', it should become 'efg,.:abcd...'
|
|
// with the caret after it, which then becomes 'abcd...,.:efg'
|
|
// when alt-t is pressed a second time.
|
|
|
|
// Move to end of word under (or after) caret.
|
|
size_t cursor = m_cursor;
|
|
while (cursor < m_buffer.size() && !is_ascii_alphanumeric(m_buffer[cursor]))
|
|
++cursor;
|
|
while (cursor < m_buffer.size() && is_ascii_alphanumeric(m_buffer[cursor]))
|
|
++cursor;
|
|
|
|
// Move left over second word and the space to its right.
|
|
size_t end = cursor;
|
|
size_t start = cursor;
|
|
while (start > 0 && !is_ascii_alphanumeric(m_buffer[start - 1]))
|
|
--start;
|
|
while (start > 0 && is_ascii_alphanumeric(m_buffer[start - 1]))
|
|
--start;
|
|
size_t start_second_word = start;
|
|
|
|
// Move left over space between the two words.
|
|
while (start > 0 && !is_ascii_alphanumeric(m_buffer[start - 1]))
|
|
--start;
|
|
size_t start_gap = start;
|
|
|
|
// Move left over first word.
|
|
while (start > 0 && is_ascii_alphanumeric(m_buffer[start - 1]))
|
|
--start;
|
|
|
|
if (start != start_gap) {
|
|
// To swap the two words, swap each word (and the gap) individually, and then swap the whole range.
|
|
auto swap_range = [this](auto from, auto to) {
|
|
for (size_t i = 0; i < (to - from) / 2; ++i)
|
|
swap(m_buffer[from + i], m_buffer[to - 1 - i]);
|
|
};
|
|
swap_range(start, start_gap);
|
|
swap_range(start_gap, start_second_word);
|
|
swap_range(start_second_word, end);
|
|
swap_range(start, end);
|
|
m_cursor = cursor;
|
|
// FIXME: Update anchored styles too.
|
|
m_refresh_needed = true;
|
|
m_chars_touched_in_the_middle += end - start;
|
|
}
|
|
}
|
|
|
|
void Editor::go_home()
|
|
{
|
|
m_cursor = 0;
|
|
m_inline_search_cursor = m_cursor;
|
|
m_search_offset = 0;
|
|
}
|
|
|
|
void Editor::go_end()
|
|
{
|
|
m_cursor = m_buffer.size();
|
|
m_inline_search_cursor = m_cursor;
|
|
m_search_offset = 0;
|
|
}
|
|
|
|
void Editor::clear_screen()
|
|
{
|
|
warn("\033[3J\033[H\033[2J");
|
|
auto stream = Core::File::standard_error().release_value_but_fixme_should_propagate_errors();
|
|
VT::move_absolute(1, 1, *stream).release_value_but_fixme_should_propagate_errors();
|
|
set_origin(1, 1);
|
|
m_refresh_needed = true;
|
|
m_cached_prompt_valid = false;
|
|
}
|
|
|
|
void Editor::insert_last_words()
|
|
{
|
|
if (!m_history.is_empty()) {
|
|
// FIXME: This isn't quite right: if the last arg was `"foo bar"` or `foo\ bar` (but not `foo\\ bar`), we should insert that whole arg as last token.
|
|
if (auto last_words = m_history.last().entry.split_view(' '); !last_words.is_empty())
|
|
insert(last_words.last());
|
|
}
|
|
}
|
|
|
|
void Editor::erase_alnum_word_backwards()
|
|
{
|
|
if (m_cursor == 0)
|
|
return;
|
|
|
|
m_last_erased.clear_with_capacity();
|
|
|
|
// A word here is contiguous alnums. `foo=bar baz` is three words.
|
|
bool has_seen_alnum = false;
|
|
while (m_cursor > 0) {
|
|
if (!is_ascii_alphanumeric(m_buffer[m_cursor - 1])) {
|
|
if (has_seen_alnum)
|
|
break;
|
|
} else {
|
|
has_seen_alnum = true;
|
|
}
|
|
|
|
m_last_erased.append(m_buffer[m_cursor - 1]);
|
|
erase_character_backwards();
|
|
}
|
|
|
|
m_last_erased.reverse();
|
|
}
|
|
|
|
void Editor::erase_alnum_word_forwards()
|
|
{
|
|
if (m_cursor == m_buffer.size())
|
|
return;
|
|
|
|
m_last_erased.clear_with_capacity();
|
|
|
|
// A word here is contiguous alnums. `foo=bar baz` is three words.
|
|
bool has_seen_alnum = false;
|
|
while (m_cursor < m_buffer.size()) {
|
|
if (!is_ascii_alphanumeric(m_buffer[m_cursor])) {
|
|
if (has_seen_alnum)
|
|
break;
|
|
} else {
|
|
has_seen_alnum = true;
|
|
}
|
|
|
|
m_last_erased.append(m_buffer[m_cursor]);
|
|
erase_character_forwards();
|
|
}
|
|
}
|
|
|
|
void Editor::erase_spaces()
|
|
{
|
|
while (m_cursor < m_buffer.size()) {
|
|
if (is_ascii_space(m_buffer[m_cursor]))
|
|
erase_character_forwards();
|
|
else
|
|
break;
|
|
}
|
|
|
|
while (m_cursor > 0) {
|
|
if (is_ascii_space(m_buffer[m_cursor - 1]))
|
|
erase_character_backwards();
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
void Editor::case_change_word(Editor::CaseChangeOp change_op)
|
|
{
|
|
// A word here is contiguous alnums. `foo=bar baz` is three words.
|
|
while (m_cursor < m_buffer.size() && !is_ascii_alphanumeric(m_buffer[m_cursor]))
|
|
++m_cursor;
|
|
size_t start = m_cursor;
|
|
while (m_cursor < m_buffer.size() && is_ascii_alphanumeric(m_buffer[m_cursor])) {
|
|
if (change_op == CaseChangeOp::Uppercase || (change_op == CaseChangeOp::Capital && m_cursor == start)) {
|
|
m_buffer[m_cursor] = to_ascii_uppercase(m_buffer[m_cursor]);
|
|
} else {
|
|
VERIFY(change_op == CaseChangeOp::Lowercase || (change_op == CaseChangeOp::Capital && m_cursor > start));
|
|
m_buffer[m_cursor] = to_ascii_lowercase(m_buffer[m_cursor]);
|
|
}
|
|
++m_cursor;
|
|
}
|
|
|
|
m_refresh_needed = true;
|
|
m_chars_touched_in_the_middle = 1;
|
|
}
|
|
|
|
void Editor::capitalize_word()
|
|
{
|
|
case_change_word(CaseChangeOp::Capital);
|
|
}
|
|
|
|
void Editor::lowercase_word()
|
|
{
|
|
case_change_word(CaseChangeOp::Lowercase);
|
|
}
|
|
|
|
void Editor::uppercase_word()
|
|
{
|
|
case_change_word(CaseChangeOp::Uppercase);
|
|
}
|
|
|
|
void Editor::edit_in_external_editor()
|
|
{
|
|
auto const* editor_command = getenv("EDITOR");
|
|
if (!editor_command)
|
|
editor_command = m_configuration.m_default_text_editor.characters();
|
|
|
|
char file_path[] = "/tmp/line-XXXXXX";
|
|
auto fd = mkstemp(file_path);
|
|
|
|
if (fd < 0) {
|
|
perror("mktemp");
|
|
return;
|
|
}
|
|
|
|
{
|
|
auto write_fd = dup(fd);
|
|
auto stream = Core::File::adopt_fd(write_fd, Core::File::OpenMode::Write).release_value_but_fixme_should_propagate_errors();
|
|
StringBuilder builder;
|
|
builder.append(Utf32View { m_buffer.data(), m_buffer.size() });
|
|
auto bytes = builder.string_view().bytes();
|
|
while (!bytes.is_empty()) {
|
|
auto nwritten = stream->write_some(bytes).release_value_but_fixme_should_propagate_errors();
|
|
bytes = bytes.slice(nwritten);
|
|
}
|
|
lseek(fd, 0, SEEK_SET);
|
|
}
|
|
|
|
ScopeGuard remove_temp_file_guard {
|
|
[fd, file_path] {
|
|
close(fd);
|
|
unlink(file_path);
|
|
}
|
|
};
|
|
|
|
Vector<char const*> args { editor_command, file_path, nullptr };
|
|
auto pid = fork();
|
|
|
|
if (pid == -1) {
|
|
perror("fork");
|
|
return;
|
|
}
|
|
|
|
if (pid == 0) {
|
|
execvp(editor_command, const_cast<char* const*>(args.data()));
|
|
perror("execv");
|
|
_exit(126);
|
|
} else {
|
|
int wstatus = 0;
|
|
do {
|
|
waitpid(pid, &wstatus, 0);
|
|
} while (errno == EINTR);
|
|
|
|
if (!(WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 0))
|
|
return;
|
|
}
|
|
|
|
{
|
|
auto file = Core::File::open({ file_path, strlen(file_path) }, Core::File::OpenMode::Read).release_value_but_fixme_should_propagate_errors();
|
|
auto contents = file->read_until_eof().release_value_but_fixme_should_propagate_errors();
|
|
StringView data { contents };
|
|
while (data.ends_with('\n'))
|
|
data = data.substring_view(0, data.length() - 1);
|
|
|
|
m_cursor = 0;
|
|
m_chars_touched_in_the_middle = m_buffer.size();
|
|
m_buffer.clear_with_capacity();
|
|
m_refresh_needed = true;
|
|
|
|
Utf8View view { data };
|
|
if (view.validate()) {
|
|
for (auto cp : view)
|
|
insert(cp);
|
|
} else {
|
|
for (auto ch : data)
|
|
insert(ch);
|
|
}
|
|
}
|
|
}
|
|
}
|