xdiff: do away with xdl_mmfile_next()

Given our simple mmfile structure, xdl_mmfile_next() calls are
redundant. Do away with calls to them.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/xdiff/xdiff.h b/xdiff/xdiff.h
index c26170ce5ea900362c7af471755c1530ea2ec999..4beb10c678702a34b14914f8b292dd65b5c273cd 100644 (file)
--- a/xdiff/xdiff.h
+++ b/xdiff/xdiff.h
@@ -106,7 +106,6 @@ typedef struct s_bdiffparam {
 #define xdl_realloc(ptr,x) realloc(ptr,x)
 
 void *xdl_mmfile_first(mmfile_t *mmf, long *size);
-void *xdl_mmfile_next(mmfile_t *mmf, long *size);
 long xdl_mmfile_size(mmfile_t *mmf);
 
 int xdl_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,

diff --git a/xdiff/xprepare.c b/xdiff/xprepare.c
index dfbb0de987f4f43410b416d2fbd2ca5b278af91b..620fc9a657e2246d3a382c916c2cdd4f820c0c44 100644 (file)
--- a/xdiff/xprepare.c
+++ b/xdiff/xprepare.c
@@ -168,12 +168,7 @@ static int xdl_prepare_ctx(mmfile_t *mf, long narec, xpparam_t const *xpp,
 
        nrec = 0;
        if ((cur = blk = xdl_mmfile_first(mf, &bsize)) != NULL) {
-               for (top = blk + bsize;;) {
-                       if (cur >= top) {
-                               if (!(cur = blk = xdl_mmfile_next(mf, &bsize)))
-                                       break;
-                               top = blk + bsize;
-                       }
+               for (top = blk + bsize; cur < top; ) {
                        prev = cur;
                        hav = xdl_hash_record(&cur, top, xpp->flags);
                        if (nrec >= narec) {

diff --git a/xdiff/xutils.c b/xdiff/xutils.c
index a45e89bbed5ba582f31aff62b13fd6ddb27b1a85..0de084e53f5144153373cc66cae7b523b4ae2812 100644 (file)
--- a/xdiff/xutils.c
+++ b/xdiff/xutils.c
@@ -67,12 +67,6 @@ void *xdl_mmfile_first(mmfile_t *mmf, long *size)
 }
 
 
-void *xdl_mmfile_next(mmfile_t *mmf, long *size)
-{
-       return NULL;
-}
-
-
 long xdl_mmfile_size(mmfile_t *mmf)
 {
        return mmf->size;
@@ -160,13 +154,7 @@ long xdl_guess_lines(mmfile_t *mf, long sample) {
        char const *data, *cur, *top;
 
        if ((cur = data = xdl_mmfile_first(mf, &size)) != NULL) {
-               for (top = data + size; nl < sample;) {
-                       if (cur >= top) {
-                               tsize += (long) (cur - data);
-                               if (!(cur = data = xdl_mmfile_next(mf, &size)))
-                                       break;
-                               top = data + size;
-                       }
+               for (top = data + size; nl < sample && cur < top; ) {
                        nl++;
                        if (!(cur = memchr(cur, '\n', top - cur)))
                                cur = top;