diff options
| -rw-r--r-- | text-motions.c | 14 | ||||
| -rw-r--r-- | text-motions.h | 5 |
2 files changed, 17 insertions, 2 deletions
diff --git a/text-motions.c b/text-motions.c index 25ff87c..15fdd2d 100644 --- a/text-motions.c +++ b/text-motions.c @@ -73,6 +73,20 @@ size_t text_find_char_prev(Text *txt, size_t pos, const char *s, size_t len) { return matched == 0 ? it.pos : pos; } +size_t text_line_prev(Text *txt, size_t pos) { + char c; + Iterator it = text_iterator_get(txt, pos); + if (!text_iterator_byte_get(&it, &c)) + return pos; + if (c == '\r') + text_iterator_byte_prev(&it, &c); + if (c == '\n') + text_iterator_byte_prev(&it, &c); + while (text_iterator_byte_get(&it, &c) && c != '\n') + text_iterator_byte_prev(&it, NULL); + return it.pos; +} + size_t text_line_begin(Text *txt, size_t pos) { char c; Iterator it = text_iterator_get(txt, pos); diff --git a/text-motions.h b/text-motions.h index e549402..dc9b66a 100644 --- a/text-motions.h +++ b/text-motions.h @@ -24,9 +24,10 @@ size_t text_find_char_prev(Text*, size_t pos, const char *s, size_t len); /* begin finish next * v v v * \n[\r] I am a line! \n[\r] - * ^ ^ - * start end + * ^ ^ ^ + * prev start end */ +size_t text_line_prev(Text*, size_t pos); size_t text_line_begin(Text*, size_t pos); size_t text_line_start(Text*, size_t pos); size_t text_line_finish(Text*, size_t pos); |