Changeset 8312577 in mainline for uspace/app/edit/search.c

Timestamp:

2012-08-17T11:44:43Z (13 years ago)

Author:

Martin Sucha <sucha14@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1d5a540

Parents:

2f136e4

Message:

Add backwards search functionality to edit.

File:

• uspace/app/edit/search.c (modified) (2 diffs)

uspace/app/edit/search.c

@@ -41 +41 @@
 #include "search_impl.h"
 
-search_t *search_init(const char *pattern, void *client_data, search_ops_t ops)
+search_t *search_init(const char *pattern, void *client_data, search_ops_t ops,
+    bool reverse)
 {
         search_t *search = calloc(1, sizeof(search_t));
@@ -47 +48 @@
                 return NULL;
         
-        search->pattern = str_to_awstr(pattern);
-        if (search->pattern == NULL) {
+        wchar_t *p = str_to_awstr(pattern);
+        if (p == NULL) {
                 free(search);
                 return NULL;
         }
         
+        search->pattern_length = wstr_length(p);
+        
+        if (reverse) {
+                /* Reverse the pattern */
+                size_t pos, half;
+                half = search->pattern_length / 2;
+                for (pos = 0; pos < half; pos++) {
+                        wchar_t tmp = p[pos];
+                        p[pos] = p[search->pattern_length - pos - 1];
+                        p[search->pattern_length - pos - 1] = tmp;
+                }
+        }
+        
+        search->pattern = p;
+        
         search->client_data = client_data;
         search->ops = ops;
-        search->pattern_length = wstr_length(search->pattern);
         search->back_table = calloc(search->pattern_length, sizeof(ssize_t));
         if (search->back_table == NULL) {