[PATCH 3/9] implement ends_with via strip_suffix

[Jeff King <peff@peff.net>]

The ends_with function is essentially a simplified version
of strip_suffix, in which we throw away the stripped length.
Implementing it as an inline on top of strip_suffix has two
advantages:

  1. We save a bit of duplicated code.

  2. The suffix is typically a string literal, and we call
     strlen on it. By making the function inline, many
     compilers can replace the strlen call with a constant.

Signed-off-by: Jeff King <peff@peff.net>
---
 git-compat-util.h | 7 ++++++-
 strbuf.c          | 9 ---------
 2 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/git-compat-util.h b/git-compat-util.h
index d044c42..4cfde49 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -347,7 +347,6 @@ extern void set_error_routine(void (*routine)(const char *err, va_list params));
 extern void set_die_is_recursing_routine(int (*routine)(void));
 
 extern int starts_with(const char *str, const char *prefix);
-extern int ends_with(const char *str, const char *suffix);
 
 static inline const char *skip_prefix(const char *str, const char *prefix)
 {
@@ -385,6 +384,12 @@ static inline int strip_suffix(const char *str, const char *suffix, size_t *len)
 	return strip_suffix_mem(str, len, suffix);
 }
 
+static inline int ends_with(const char *str, const char *suffix)
+{
+	size_t len;
+	return strip_suffix(str, suffix, &len);
+}
+
 #if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
 
 #ifndef PROT_READ
diff --git a/strbuf.c b/strbuf.c
index ac62982..99dbeba 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -11,15 +11,6 @@ int starts_with(const char *str, const char *prefix)
 			return 0;
 }
 
-int ends_with(const char *str, const char *suffix)
-{
-	int len = strlen(str), suflen = strlen(suffix);
-	if (len < suflen)
-		return 0;
-	else
-		return !strcmp(str + len - suflen, suffix);
-}
-
 /*
  * Used as the default ->buf value, so that people can always assume
  * buf is non NULL and ->buf is NUL terminated even for a freshly
-- 
2.0.0.566.gfe3e6b2