diff options
| -rw-r--r-- | main.c | 40 |
1 files changed, 40 insertions, 0 deletions
@@ -82,6 +82,8 @@ static const char *selections_restore(Vis*, const char *keys, const Arg *arg); static const char *selections_union(Vis*, const char *keys, const Arg *arg); /* intersect selections */ static const char *selections_intersect(Vis*, const char *keys, const Arg *arg); +/* perform complement of current active selections */ +static const char *selections_complement(Vis*, const char *keys, const Arg *arg); /* adjust current used count according to keys */ static const char *count(Vis*, const char *keys, const Arg *arg); /* move to the count-th line or if not given either to the first (arg->i < 0) @@ -288,6 +290,7 @@ enum { VIS_ACTION_SELECTIONS_RESTORE, VIS_ACTION_SELECTIONS_UNION, VIS_ACTION_SELECTIONS_INTERSECT, + VIS_ACTION_SELECTIONS_COMPLEMENT, VIS_ACTION_TEXT_OBJECT_WORD_OUTER, VIS_ACTION_TEXT_OBJECT_WORD_INNER, VIS_ACTION_TEXT_OBJECT_LONGWORD_OUTER, @@ -1068,6 +1071,11 @@ static const KeyAction vis_action[] = { VIS_HELP("Intersect selections with register") selections_intersect }, + [VIS_ACTION_SELECTIONS_COMPLEMENT] = { + "vis-selections-complement", + VIS_HELP("Complement selections") + selections_complement + }, [VIS_ACTION_TEXT_OBJECT_WORD_OUTER] = { "vis-textobject-word-outer", VIS_HELP("A word leading and trailing whitespace included") @@ -1713,6 +1721,38 @@ static const char *selections_intersect(Vis *vis, const char *keys, const Arg *a return keys; } +static void complement(Array *ret, Array *a, Filerange *universe) { + size_t pos = 0; + for (size_t i = 0, len = array_length(a); i < len; i++) { + Filerange *r = array_get(a, i); + if (pos < r->start) { + Filerange new = text_range_new(pos, r->start); + array_add(ret, &new); + } + pos = r->end; + } + if (pos < universe->end) { + Filerange new = text_range_new(pos, universe->end); + array_add(ret, &new); + } +} + +static const char *selections_complement(Vis *vis, const char *keys, const Arg *arg) { + Text *txt = vis_text(vis); + View *view = vis_view(vis); + Filerange universe = text_object_entire(txt, 0); + Array a = view_selections_get_all(view); + Array sel; + array_init_from(&sel, &a); + + complement(&sel, &a, &universe); + + view_selections_set_all(view, &sel); + array_release(&a); + array_release(&sel); + return keys; +} + static const char *replace(Vis *vis, const char *keys, const Arg *arg) { if (!keys[0]) { vis_keymap_disable(vis); |