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@ -775,64 +775,62 @@ fn align_selections(cx: &mut Context) {
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let (view, doc) = current!(cx.editor);
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let text = doc.text().slice(..);
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let selection = doc.selection(view.id);
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let mut column_widths: Vec<Vec<_>> = vec![];
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let mut column_widths: Vec<Vec<_>> = Vec::new();
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let mut last_line = text.len_lines() + 1;
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let mut column = 0;
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// first of all, we need compute all column's width, let use max width of the selections in a column
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for sel in selection {
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let (l1, l2) = sel.line_range(text);
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if l1 != l2 {
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let mut col = 0;
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for range in selection {
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let coords = coords_at_pos(text, range.head);
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let anchor_coords = coords_at_pos(text, range.anchor);
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if coords.row != anchor_coords.row {
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cx.editor
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.set_error("align cannot work with multi line selections");
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return;
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}
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// if the selection is not in the same line with last selection, we set the column to 0
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column = if l1 != last_line { 0 } else { column + 1 };
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last_line = l1;
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// save all max line cursor of selections
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let cursor = sel.to() - text.line_to_char(l1);
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if column < column_widths.len() {
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column_widths[column].push((l1, cursor));
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} else {
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column_widths.push(vec![(l1, cursor)]);
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col = if coords.row == last_line { col + 1 } else { 0 };
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if col >= column_widths.len() {
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column_widths.push(Vec::new());
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}
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column_widths[col].push((range.from(), coords.col));
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last_line = coords.row;
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}
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let mut max_curs = vec![];
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for i in 0..column_widths.len() {
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// compute max cursor of current column
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let max_cur = column_widths[i]
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let mut changes = Vec::with_capacity(selection.len());
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// Account for changes on each row
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let len = column_widths.first().map(|cols| cols.len()).unwrap_or(0);
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let mut offs = vec![0; len];
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for col in column_widths {
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let max_col = col
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.iter()
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.fold(0, |max, &(_, cur)| max.max(cur));
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max_curs.push(max_cur);
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.enumerate()
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.map(|(row, (_, cursor))| *cursor + offs[row])
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.max()
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.unwrap_or(0);
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let mut pads = std::collections::HashMap::new();
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for item in column_widths[i].iter_mut() {
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pads.insert(item.0, max_cur - item.1);
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}
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// add pad to right columns
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for col in column_widths[i + 1..].iter_mut() {
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for item in col.iter_mut() {
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item.1 += pads.get(&item.0).unwrap_or(&0);
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for (row, (insert_pos, last_col)) in col.into_iter().enumerate() {
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let ins_count = max_col - (last_col + offs[row]);
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if ins_count == 0 {
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continue;
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}
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offs[row] += ins_count;
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changes.push((insert_pos, insert_pos, Some(" ".repeat(ins_count).into())));
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}
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}
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last_line = text.len_lines();
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let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
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let line = range.cursor_line(text);
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column = if line != last_line { 0 } else { column + 1 };
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last_line = line;
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let max_cur = max_curs[column];
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let new_cur = column_widths[column]
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.iter()
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.fold(max_cur, |c, (l, cur)| if *l == line { *cur } else { c });
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let mut new_str = " ".repeat(max_cur - new_cur);
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new_str.push_str(&range.fragment(text));
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(range.from(), range.to(), Some(new_str.into()))
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});
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// The changeset has to be sorted
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changes.sort_unstable_by_key(|(from, _, _)| *from);
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let transaction = Transaction::change(doc.text(), changes.into_iter());
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doc.apply(&transaction, view.id);
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}
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