122 lines
4.8 KiB
C++
122 lines
4.8 KiB
C++
#include "editor/editor.h"
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#include "editor/folds.h"
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#include "main.h"
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void move_line_up(Editor *editor) {
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if (!editor || !editor->root || editor->cursor.row == 0)
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return;
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if (mode == NORMAL || mode == INSERT) {
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uint32_t line_len, line_cluster_len;
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std::shared_lock lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
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char *line = next_line(it, &line_len);
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if (!line) {
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lock.unlock();
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return;
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}
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if (line_len > 0 && line[line_len - 1] == '\n')
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line_len--;
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line_cluster_len = count_clusters(line, line_len, 0, line_len);
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uint32_t target_row = prev_unfolded_row(editor, editor->cursor.row - 1);
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uint32_t up_by = editor->cursor.row - target_row;
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if (up_by > 1)
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up_by--;
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lock.unlock();
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Coord cursor = editor->cursor;
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edit_erase(editor, {cursor.row, 0}, line_cluster_len);
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edit_erase(editor, {cursor.row, 0}, -1);
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edit_insert(editor, {cursor.row - up_by, 0}, (char *)"\n", 1);
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edit_insert(editor, {cursor.row - up_by, 0}, line, line_len);
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free(it->buffer);
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free(it);
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editor->cursor = {cursor.row - up_by, cursor.col};
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} else if (mode == SELECT) {
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uint32_t start_row = MIN(editor->cursor.row, editor->selection.row);
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uint32_t end_row = MAX(editor->cursor.row, editor->selection.row);
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uint32_t start_byte = line_to_byte(editor->root, start_row, nullptr);
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uint32_t end_byte = line_to_byte(editor->root, end_row + 1, nullptr);
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char *selected_text = read(editor->root, start_byte, end_byte - start_byte);
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if (!selected_text)
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return;
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uint32_t selected_len = count_clusters(selected_text, end_byte - start_byte,
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0, end_byte - start_byte);
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Coord cursor = editor->cursor;
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Coord selection = editor->selection;
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edit_erase(editor, {start_row, 0}, selected_len);
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edit_insert(editor, {start_row - 1, 0}, selected_text,
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end_byte - start_byte);
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free(selected_text);
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editor->cursor = {cursor.row - 1, cursor.col};
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editor->selection = {selection.row - 1, selection.col};
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}
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}
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void move_line_down(Editor *editor) {
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if (!editor || !editor->root)
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return;
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if (mode == NORMAL || mode == INSERT) {
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if (editor->cursor.row >= editor->root->line_count - 1)
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return;
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uint32_t line_len, line_cluster_len;
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std::shared_lock lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
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char *line = next_line(it, &line_len);
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if (!line) {
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lock.unlock();
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return;
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}
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if (line_len && line[line_len - 1] == '\n')
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line_len--;
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line_cluster_len = count_clusters(line, line_len, 0, line_len);
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uint32_t target_row = next_unfolded_row(editor, editor->cursor.row + 1);
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if (target_row >= editor->root->line_count) {
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free(line);
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lock.unlock();
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return;
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}
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uint32_t down_by = target_row - editor->cursor.row;
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if (down_by > 1)
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down_by--;
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uint32_t ln;
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line_to_byte(editor->root, editor->cursor.row + down_by - 1, &ln);
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lock.unlock();
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Coord cursor = editor->cursor;
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edit_erase(editor, {cursor.row, 0}, line_cluster_len);
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edit_erase(editor, {cursor.row, 0}, -1);
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edit_insert(editor, {cursor.row + down_by, 0}, (char *)"\n", 1);
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edit_insert(editor, {cursor.row + down_by, 0}, line, line_len);
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free(it->buffer);
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free(it);
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editor->cursor = {cursor.row + down_by, cursor.col};
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} else if (mode == SELECT) {
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if (editor->cursor.row >= editor->root->line_count - 1 ||
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editor->selection.row >= editor->root->line_count - 1)
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return;
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std::shared_lock lock(editor->knot_mtx);
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uint32_t start_row = MIN(editor->cursor.row, editor->selection.row);
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uint32_t end_row = MAX(editor->cursor.row, editor->selection.row);
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uint32_t target_row = next_unfolded_row(editor, end_row + 1);
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if (target_row >= editor->root->line_count)
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return;
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uint32_t down_by = target_row - end_row;
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if (down_by > 1)
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down_by--;
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uint32_t start_byte = line_to_byte(editor->root, start_row, nullptr);
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uint32_t end_byte = line_to_byte(editor->root, end_row + 1, nullptr);
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char *selected_text = read(editor->root, start_byte, end_byte - start_byte);
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lock.unlock();
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if (!selected_text)
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return;
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uint32_t selected_len = count_clusters(selected_text, end_byte - start_byte,
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0, end_byte - start_byte);
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Coord cursor = editor->cursor;
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Coord selection = editor->selection;
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edit_erase(editor, {start_row, 0}, selected_len);
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edit_insert(editor, {start_row + down_by, 0}, selected_text,
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end_byte - start_byte);
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free(selected_text);
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editor->cursor = {cursor.row + down_by, cursor.col};
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editor->selection = {selection.row + down_by, selection.col};
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}
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}
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