regex: use regexec_buf()

diff --git a/git-compat-util.h b/git-compat-util.h
index c07e0c177890639cf016eac9766d04f235dbfbcf..7047d281e56353d79b384cce55d199691ab33842 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -279,9 +279,6 @@ extern char *gitdirname(char *);
 #endif
 #include <openssl/ssl.h>
 #include <openssl/err.h>
-#ifdef NO_HMAC_CTX_CLEANUP
-#define HMAC_CTX_cleanup HMAC_cleanup
-#endif
 #endif
 
 /* On most systems <netdb.h> would have given us this, but
@@ -715,8 +712,8 @@ static inline size_t st_add(size_t a, size_t b)
                    (uintmax_t)a, (uintmax_t)b);
        return a + b;
 }
-#define st_add3(a,b,c)   st_add((a),st_add((b),(c)))
-#define st_add4(a,b,c,d) st_add((a),st_add3((b),(c),(d)))
+#define st_add3(a,b,c)   st_add(st_add((a),(b)),(c))
+#define st_add4(a,b,c,d) st_add(st_add3((a),(b),(c)),(d))
 
 static inline size_t st_mult(size_t a, size_t b)
 {
@@ -945,6 +942,19 @@ void git_qsort(void *base, size_t nmemb, size_t size,
 #define qsort git_qsort
 #endif
 
+#ifndef REG_STARTEND
+#error "Git requires REG_STARTEND support. Compile with NO_REGEX=NeedsStartEnd"
+#endif
+
+static inline int regexec_buf(const regex_t *preg, const char *buf, size_t size,
+                             size_t nmatch, regmatch_t pmatch[], int eflags)
+{
+       assert(nmatch > 0 && pmatch);
+       pmatch[0].rm_so = 0;
+       pmatch[0].rm_eo = size;
+       return regexec(preg, buf, nmatch, pmatch, eflags | REG_STARTEND);
+}
+
 #ifndef DIR_HAS_BSD_GROUP_SEMANTICS
 # define FORCE_DIR_SET_GID S_ISGID
 #else