link_alt_odb_entries(): take (char *, len) rather than two pointers

Change link_alt_odb_entries() to take the length of the "alt"
parameter rather than a pointer to the end of the "alt" string.  This
is the more common calling convention and simplifies the code a tiny
bit.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>

diff --git a/sha1_file.c b/sha1_file.c
index c3524131c180e0ca2e01d1959286cdfdb43811f9..40b23297b2e1e60a3719e9c67256303e39456604 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -317,7 +317,7 @@ static int link_alt_odb_entry(const char *entry, const char *relative_base, int
        return 0;
 }
 
-static void link_alt_odb_entries(const char *alt, const char *ep, int sep,
+static void link_alt_odb_entries(const char *alt, int len, int sep,
                                 const char *relative_base, int depth)
 {
        struct string_list entries = STRING_LIST_INIT_NODUP;
@@ -330,7 +330,7 @@ static void link_alt_odb_entries(const char *alt, const char *ep, int sep,
                return;
        }
 
-       alt_copy = xmemdupz(alt, ep - alt);
+       alt_copy = xmemdupz(alt, len);
        string_list_split_in_place(&entries, alt_copy, sep, -1);
        for (i = 0; i < entries.nr; i++) {
                const char *entry = entries.items[i].string;
@@ -371,7 +371,7 @@ void read_info_alternates(const char * relative_base, int depth)
        map = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, fd, 0);
        close(fd);
 
-       link_alt_odb_entries(map, map + mapsz, '\n', relative_base, depth);
+       link_alt_odb_entries(map, mapsz, '\n', relative_base, depth);
 
        munmap(map, mapsz);
 }
@@ -385,7 +385,7 @@ void add_to_alternates_file(const char *reference)
        if (commit_lock_file(lock))
                die("could not close alternates file");
        if (alt_odb_tail)
-               link_alt_odb_entries(alt, alt + strlen(alt), '\n', NULL, 0);
+               link_alt_odb_entries(alt, strlen(alt), '\n', NULL, 0);
 }
 
 void foreach_alt_odb(alt_odb_fn fn, void *cb)
@@ -409,7 +409,7 @@ void prepare_alt_odb(void)
        if (!alt) alt = "";
 
        alt_odb_tail = &alt_odb_list;
-       link_alt_odb_entries(alt, alt + strlen(alt), PATH_SEP, NULL, 0);
+       link_alt_odb_entries(alt, strlen(alt), PATH_SEP, NULL, 0);
 
        read_info_alternates(get_object_directory(), 0);
 }