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date_parse.c: str_end_with

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* ext/date/date_parse.c (str_end_with): extract to tell if a
  string ends with the other string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56314 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-10-01 09:00:05 +00:00
parent d618f7b79a
commit 4bb7485464
1 changed files with 10 additions and 3 deletions
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13
ext/date/date_parse.c
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@ -342,6 +342,13 @@ subx(VALUE str, VALUE rep, VALUE pat, VALUE hash, int (*cb)(VALUE, VALUE))
#include "zonetab.h"
static int
str_end_with(const char *s, long l, const char *w)
{
int n = (int)strlen(w);
return (l >= n && strncmp(s - n, w, n) == 0);
}
VALUE
date_zone_to_diff(VALUE str)
{
@ -384,14 +391,14 @@ date_zone_to_diff(VALUE str)
static const char DST2[] = " dst";
int dst = 0;
if (l >= (int)sizeof(STD) - 1 && strcmp(d - (sizeof(STD) - 1), STD) == 0) {
if (str_end_with(d, l, STD)) {
l -= sizeof(STD) - 1;
}
else if (l >= (int)sizeof(DST1) - 1 && strcmp(d - (sizeof(DST1) - 1), DST1) == 0) {
else if (str_end_with(d, l, DST1)) {
l -= sizeof(DST1) - 1;
dst = 1;
}
else if (l >= (int)sizeof(DST2) - 1 && strcmp(d - (sizeof(DST2) - 1), DST2) == 0) {
else if (str_end_with(d, l, DST2)) {
l -= sizeof(DST2) - 1;
dst = 1;
}