+long xdl_bogosqrt(long n) {
+ long i;
+
+ /*
+ * Classical integer square root approximation using shifts.
+ */
+ for (i = 1; n > 0; n >>= 2)
+ i <<= 1;
+
+ return i;
+}
+
+
int xdl_emit_diffrec(char const *rec, long size, char const *pre, long psize,
xdemitcb_t *ecb) {
+ int i = 2;
mmbuffer_t mb[3];
- int i;
mb[0].ptr = (char *) pre;
mb[0].size = psize;
mb[1].ptr = (char *) rec;
mb[1].size = size;
- i = 2;
-
- if (!size || rec[size-1] != '\n') {
- mb[2].ptr = "\n\\ No newline at end of file\n";
+ if (size > 0 && rec[size - 1] != '\n') {
+ mb[2].ptr = (char *) "\n\\ No newline at end of file\n";
mb[2].size = strlen(mb[2].ptr);
- i = 3;
+ i++;
}
-
if (ecb->outf(ecb->priv, mb, i) < 0) {
return -1;
return nl + 1;
}
+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; ) {
+ if (isspace(l1[i1]))
+ while (isspace(l1[i1]) && i1 < s1)
+ i1++;
+ if (isspace(l2[i2]))
+ while (isspace(l2[i2]) && i2 < s2)
+ i2++;
+ if (i1 < s1 && i2 < s2 && l1[i1++] != l2[i2++])
+ return 0;
+ }
+ return (i1 >= s1 && i2 >= s2);
+ } else if (flags & XDF_IGNORE_WHITESPACE_CHANGE) {
+ for (i1 = i2 = 0; i1 < s1 && i2 < s2; ) {
+ if (isspace(l1[i1])) {
+ if (!isspace(l2[i2]))
+ return 0;
+ while (isspace(l1[i1]) && i1 < s1)
+ i1++;
+ while (isspace(l2[i2]) && i2 < s2)
+ i2++;
+ } else if (l1[i1++] != l2[i2++])
+ return 0;
+ }
+ 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) {
+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)) {
+ const char *ptr2 = ptr;
+ while (ptr + 1 < top && isspace(ptr[1])
+ && ptr[1] != '\n')
+ ptr++;
+ 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);
+ ha ^= (unsigned long) *ptr;
+ }
+ *data = ptr < top ? ptr + 1: ptr;
+
+ return ha;
+}
+
+
+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;
}
-int xdl_emit_hunk_hdr(long s1, long c1, long s2, long c2, xdemitcb_t *ecb) {
+int xdl_emit_hunk_hdr(long s1, long c1, long s2, long c2,
+ const char *func, long funclen, xdemitcb_t *ecb) {
int nb = 0;
mmbuffer_t mb;
char buf[128];
memcpy(buf, "@@ -", 4);
nb += 4;
- nb += xdl_num_out(buf + nb, c1 ? s1: 0);
+ nb += xdl_num_out(buf + nb, c1 ? s1: s1 - 1);
if (c1 != 1) {
memcpy(buf + nb, ",", 1);
memcpy(buf + nb, " +", 2);
nb += 2;
- nb += xdl_num_out(buf + nb, c2 ? s2: 0);
+ nb += xdl_num_out(buf + nb, c2 ? s2: s2 - 1);
if (c2 != 1) {
memcpy(buf + nb, ",", 1);
nb += xdl_num_out(buf + nb, c2);
}
- memcpy(buf + nb, " @@\n", 4);
- nb += 4;
+ memcpy(buf + nb, " @@", 3);
+ nb += 3;
+ if (func && funclen) {
+ buf[nb++] = ' ';
+ if (funclen > sizeof(buf) - nb - 1)
+ funclen = sizeof(buf) - nb - 1;
+ memcpy(buf + nb, func, funclen);
+ nb += funclen;
+ }
+ buf[nb++] = '\n';
mb.ptr = buf;
mb.size = nb;
return 0;
}
-