Merge branch 'ar/clone'

diff --git a/xdiff/xutils.c b/xdiff/xutils.c
index f7bdd395ad1f69067654a754b4d60fcc7c359275..2ade97b2574a9f77e7ae4002a4e07a6a38e46d07 100644 (file)
--- a/xdiff/xutils.c
+++ b/xdiff/xutils.c
@@ -191,54 +191,75 @@ int xdl_recmatch(const char *l1, long s1, const char *l2, long s2, long flags)
        int i1, i2;
 
        if (flags & XDF_IGNORE_WHITESPACE) {
-               for (i1 = i2 = 0; i1 < s1 && i2 < s2; i1++, i2++) {
+               for (i1 = i2 = 0; i1 < s1 && i2 < s2; ) {
                        if (isspace(l1[i1]))
                                while (isspace(l1[i1]) && i1 < s1)
                                        i1++;
-                       else if (isspace(l2[i2]))
+                       if (isspace(l2[i2]))
                                while (isspace(l2[i2]) && i2 < s2)
                                        i2++;
-                       else if (l1[i1] != l2[i2])
-                               return l2[i2] - l1[i1];
+                       if (i1 < s1 && i2 < s2 && l1[i1++] != l2[i2++])
+                               return 0;
                }
-               if (i1 >= s1)
-                       return 1;
-               else if (i2 >= s2)
-                       return -1;
+               return (i1 >= s1 && i2 >= s2);
        } else if (flags & XDF_IGNORE_WHITESPACE_CHANGE) {
-               for (i1 = i2 = 0; i1 < s1 && i2 < s2; i1++, i2++) {
+               for (i1 = i2 = 0; i1 < s1 && i2 < s2; ) {
                        if (isspace(l1[i1])) {
                                if (!isspace(l2[i2]))
-                                       return -1;
+                                       return 0;
                                while (isspace(l1[i1]) && i1 < s1)
                                        i1++;
                                while (isspace(l2[i2]) && i2 < s2)
                                        i2++;
-                       } else if (l1[i1] != l2[i2])
-                               return l2[i2] - l1[i1];
+                       } else if (l1[i1++] != l2[i2++])
+                               return 0;
                }
-               if (i1 >= s1)
-                       return 1;
-               else if (i2 >= s2)
-                       return -1;
+               return (i1 >= s1 && i2 >= s2);
+       } else if (flags & XDF_IGNORE_WHITESPACE_AT_EOL) {
+               for (i1 = i2 = 0; i1 < s1 && i2 < s2; ) {
+                       if (l1[i1] != l2[i2]) {
+                               while (i1 < s1 && isspace(l1[i1]))
+                                       i1++;
+                               while (i2 < s2 && isspace(l2[i2]))
+                                       i2++;
+                               if (i1 < s1 || i2 < s2)
+                                       return 0;
+                               return 1;
+                       }
+                       i1++;
+                       i2++;
+               }
+               return i1 >= s1 && i2 >= s2;
        } else
                return s1 == s2 && !memcmp(l1, l2, s1);
 
        return 0;
 }
 
-unsigned long xdl_hash_record(char const **data, char const *top, long flags) {
+static unsigned long xdl_hash_record_with_whitespace(char const **data,
+               char const *top, long flags) {
        unsigned long ha = 5381;
        char const *ptr = *data;
 
        for (; ptr < top && *ptr != '\n'; ptr++) {
-               if (isspace(*ptr) && (flags & XDF_WHITESPACE_FLAGS)) {
-                       while (ptr < top && isspace(*ptr) && ptr[1] != '\n')
+               if (isspace(*ptr)) {
+                       const char *ptr2 = ptr;
+                       while (ptr + 1 < top && isspace(ptr[1])
+                                       && ptr[1] != '\n')
                                ptr++;
-                       if (flags & XDF_IGNORE_WHITESPACE_CHANGE) {
+                       if (flags & XDF_IGNORE_WHITESPACE_CHANGE
+                                       && ptr[1] != '\n') {
                                ha += (ha << 5);
                                ha ^= (unsigned long) ' ';
                        }
+                       if (flags & XDF_IGNORE_WHITESPACE_AT_EOL
+                                       && ptr[1] != '\n') {
+                               while (ptr2 != ptr + 1) {
+                                       ha += (ha << 5);
+                                       ha ^= (unsigned long) *ptr2;
+                                       ptr2++;
+                               }
+                       }
                        continue;
                }
                ha += (ha << 5);
@@ -250,6 +271,23 @@ unsigned long xdl_hash_record(char const **data, char const *top, long flags) {
 }
 
 
+unsigned long xdl_hash_record(char const **data, char const *top, long flags) {
+       unsigned long ha = 5381;
+       char const *ptr = *data;
+
+       if (flags & XDF_WHITESPACE_FLAGS)
+               return xdl_hash_record_with_whitespace(data, top, flags);
+
+       for (; ptr < top && *ptr != '\n'; ptr++) {
+               ha += (ha << 5);
+               ha ^= (unsigned long) *ptr;
+       }
+       *data = ptr < top ? ptr + 1: ptr;
+
+       return ha;
+}
+
+
 unsigned int xdl_hashbits(unsigned int size) {
        unsigned int val = 1, bits = 0;
 
@@ -342,4 +380,3 @@ int xdl_emit_hunk_hdr(long s1, long c1, long s2, long c2,
 
        return 0;
 }
-