-static xbt_matrix_t diff_build_LCS(xbt_dynar_t da, xbt_dynar_t db)
-{
- xbt_matrix_t C =
- xbt_matrix_new(xbt_dynar_length(da), xbt_dynar_length(db),
- sizeof(int), NULL);
- unsigned long i, j;
-
- /* Compute the LCS */
- /*
- C = array(0..m, 0..n)
- for i := 0..m
- C[i,0] = 0
- for j := 1..n
- C[0,j] = 0
- for i := 1..m
- for j := 1..n
- if X[i] = Y[j]
- C[i,j] := C[i-1,j-1] + 1
- else:
- C[i,j] := max(C[i,j-1], C[i-1,j])
- return C[m,n]
- */
- if (xbt_dynar_length(db) != 0)
- for (i = 0; i < xbt_dynar_length(da); i++)
- *((int *) xbt_matrix_get_ptr(C, i, 0)) = 0;
-
- if (xbt_dynar_length(da) != 0)
- for (j = 0; j < xbt_dynar_length(db); j++)
- *((int *) xbt_matrix_get_ptr(C, 0, j)) = 0;
-
- for (i = 1; i < xbt_dynar_length(da); i++)
- for (j = 1; j < xbt_dynar_length(db); j++) {
-
- if (!strcmp
- (xbt_dynar_get_as(da, i, char *),
- xbt_dynar_get_as(db, j, char *)))
- *((int *) xbt_matrix_get_ptr(C, i, j)) =
- xbt_matrix_get_as(C, i - 1, j - 1, int) + 1;
- else
- *((int *) xbt_matrix_get_ptr(C, i, j)) =
- max(xbt_matrix_get_as(C, i, j - 1, int),
- xbt_matrix_get_as(C, i - 1, j, int));
- }
- return C;
-}
-
-static void diff_build_diff(xbt_dynar_t res,
- xbt_matrix_t C,
- xbt_dynar_t da, xbt_dynar_t db, int i, int j)
-{
- char *topush;
- /* Construct the diff
- function printDiff(C[0..m,0..n], X[1..m], Y[1..n], i, j)
- if i > 0 and j > 0 and X[i] = Y[j]
- printDiff(C, X, Y, i-1, j-1)
- print " " + X[i]
- else
- if j > 0 and (i = 0 or C[i,j-1] >= C[i-1,j])
- printDiff(C, X, Y, i, j-1)
- print "+ " + Y[j]
- else if i > 0 and (j = 0 or C[i,j-1] < C[i-1,j])
- printDiff(C, X, Y, i-1, j)
- print "- " + X[i]
- */
-
- if (i >= 0 && j >= 0 && !strcmp(xbt_dynar_get_as(da, i, char *),
- xbt_dynar_get_as(db, j, char *))) {
- diff_build_diff(res, C, da, db, i - 1, j - 1);
- topush = bprintf(" %s", xbt_dynar_get_as(da, i, char *));
- xbt_dynar_push(res, &topush);
- } else if (j >= 0 &&
- (i <= 0 || j == 0
- || xbt_matrix_get_as(C, i, j - 1,
- int) >= xbt_matrix_get_as(C, i - 1, j,
- int))) {
- diff_build_diff(res, C, da, db, i, j - 1);
- topush = bprintf("+ %s", xbt_dynar_get_as(db, j, char *));
- xbt_dynar_push(res, &topush);
- } else if (i >= 0 &&
- (j <= 0
- || xbt_matrix_get_as(C, i, j - 1, int) < xbt_matrix_get_as(C,
- i
- -
- 1,
- j,
- int)))
- {
- diff_build_diff(res, C, da, db, i - 1, j);
- topush = bprintf("- %s", xbt_dynar_get_as(da, i, char *));
- xbt_dynar_push(res, &topush);
- } else if (i <= 0 && j <= 0) {
- return;
- } else {
- THROWF(arg_error, 0, "Invalid values: i=%d, j=%d", i, j);
- }
-
-}
-
-/** @brief Compute the unified diff of two strings */
-char *xbt_str_diff(const char *a, const char *b)