From 19c1ea602bde2e131bdc89f78786a2efced41d42 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= Date: Sat, 13 Sep 2014 23:00:19 +0200 Subject: Introduce some helper functions dealing with Filerange --- text.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'text.c') diff --git a/text.c b/text.c index 7cdfd03..3b73a62 100644 --- a/text.c +++ b/text.c @@ -1111,3 +1111,22 @@ int text_search_range_backward(Text *txt, size_t pos, size_t len, Regex *r, size free(buf); return ret; } + +bool text_range_valid(Filerange *r) { + return r->start != EPOS && r->end != EPOS && r->start <= r->end; +} + +Filerange text_range_empty(void) { + return (Filerange){ .start = EPOS, .end = EPOS }; +} + +Filerange text_range_union(Filerange *r1, Filerange *r2) { + if (!text_range_valid(r1)) + return *r2; + if (!text_range_valid(r2)) + return *r1; + return (Filerange) { + .start = MIN(r1->start, r2->start), + .end = MAX(r1->end, r2->end), + }; +} -- cgit v1.2.3