[cwittich] 31080: Stefan Leichter : Replace call to delete_branch with RegDeleteTreeA. <Stefan.Leichter at camline.com>

Author: cwittich
Date: Sat Dec  8 17:05:00 2007
New Revision: 31080

URL: http://svn.reactos.org/svn/reactos?rev=31080&view=rev
Log:
Stefan Leichter : Replace call to delete_branch with RegDeleteTreeA. <Stefan.Leichter
at camline.com>

Modified:
    trunk/reactos/base/applications/regedit/regproc.c

Modified: trunk/reactos/base/applications/regedit/regproc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/regedit/…
==============================================================================
--- trunk/reactos/base/applications/regedit/regproc.c (original)
+++ trunk/reactos/base/applications/regedit/regproc.c Sat Dec  8 17:05:00 2007
@@ -364,6 +364,45 @@
         }
     }
     str[val_idx] = '\0';
+}
+
+/******************************************************************************
+ * Parses HKEY_SOME_ROOT\some\key\path to get the root key handle and
+ * extract the key path (what comes after the first '\').
+ */
+static BOOL parseKeyName(LPSTR lpKeyName, HKEY *hKey, LPSTR *lpKeyPath)
+{
+    LPSTR lpSlash;
+    unsigned int i, len;
+
+    if (lpKeyName == NULL)
+        return FALSE;
+
+    lpSlash = strchr(lpKeyName, '\\');
+    if (lpSlash)
+    {
+        len = lpSlash-lpKeyName;
+    }
+    else
+    {
+        len = strlen(lpKeyName);
+        lpSlash = lpKeyName+len;
+    }
+    *hKey = NULL;
+    for (i = 0; i < REG_CLASS_NUMBER; i++) {
+        if (strncmp(lpKeyName, reg_class_names[i], len) == 0 &&
+            len == strlen(reg_class_names[i])) {
+            *hKey = reg_class_keys[i];
+            break;
+        }
+    }
+    if (*hKey == NULL)
+        return FALSE;
+
+    if (*lpSlash != '\0')
+        lpSlash++;
+    *lpKeyPath = lpSlash;
+    return TRUE;
 }
 
 /******************************************************************************
@@ -1415,53 +1454,7 @@
 }
 
 /******************************************************************************
- * Recursive function which removes the registry key with all subkeys.
- */
-static void delete_branch(HKEY key,
-                   CHAR **reg_key_name_buf, DWORD *reg_key_name_len)
-{
-    HKEY branch_key;
-    DWORD max_sub_key_len;
-    DWORD subkeys;
-    DWORD curr_len;
-    LONG ret;
-    long int i;
-
-    if (RegOpenKeyA(key, *reg_key_name_buf, &branch_key) != ERROR_SUCCESS) {
-        REGPROC_print_error();
-    }
-
-    /* get size information and resize the buffers if necessary */
-    if (RegQueryInfoKey(branch_key, NULL, NULL, NULL,
-                        &subkeys, &max_sub_key_len,
-                        NULL, NULL, NULL, NULL, NULL, NULL
-                       ) != ERROR_SUCCESS) {
-        REGPROC_print_error();
-    }
-    curr_len = (DWORD) strlen(*reg_key_name_buf);
-    REGPROC_resize_char_buffer(reg_key_name_buf, reg_key_name_len,
-                               max_sub_key_len + curr_len + 1);
-
-    (*reg_key_name_buf)[curr_len] = '\\';
-    for (i = subkeys - 1; i >= 0; i--) {
-        DWORD buf_len = *reg_key_name_len - curr_len;
-
-        ret = RegEnumKeyExA(branch_key, i, *reg_key_name_buf + curr_len + 1,
-                            &buf_len, NULL, NULL, NULL, NULL);
-        if (ret != ERROR_SUCCESS &&
-                ret != ERROR_MORE_DATA &&
-                ret != ERROR_NO_MORE_ITEMS) {
-            REGPROC_print_error();
-        } else {
-            delete_branch(key, reg_key_name_buf, reg_key_name_len);
-        }
-    }
-    (*reg_key_name_buf)[curr_len] = '\0';
-    RegCloseKey(branch_key);
-    RegDeleteKeyA(key, *reg_key_name_buf);
-}
-
-/******************************************************************************
+ 
  * Removes the registry key with all subkeys. Parses full key name.
  *
  * Parameters:
@@ -1470,34 +1463,24 @@
  */
 void delete_registry_key(CHAR *reg_key_name)
 {
-    CHAR *branch_name;
-    DWORD branch_name_len;
-    HKEY reg_key_class;
-    HKEY branch_key;
+    CHAR *key_name;
+    HKEY key_class;
 
     if (!reg_key_name || !reg_key_name[0])
         return;
-    /* open the specified key */
-    reg_key_class = getRegClass(reg_key_name);
-    if (reg_key_class == (HKEY)ERROR_INVALID_PARAMETER) {
+
+    if (!parseKeyName(reg_key_name, &key_class, &key_name)) {
         fprintf(stderr,"%s: Incorrect registry class specification in
'%s'\n",
                 getAppName(), reg_key_name);
         exit(1);
     }
-    branch_name = getRegKeyName(reg_key_name);
-    CHECK_ENOUGH_MEMORY(branch_name);
-    branch_name_len = (DWORD) strlen(branch_name);
-    if (!branch_name[0]) {
+    if (!*key_name) {
         fprintf(stderr,"%s: Can't delete registry class '%s'\n",
                 getAppName(), reg_key_name);
         exit(1);
     }
-    if (RegOpenKeyA(reg_key_class, branch_name, &branch_key) == ERROR_SUCCESS) {
-        /* check whether the key exists */
-        RegCloseKey(branch_key);
-        delete_branch(reg_key_class, &branch_name, &branch_name_len);
-    }
-    HeapFree(GetProcessHeap(), 0, branch_name);
+
+    RegDeleteTreeA(key_class, key_name);
 }
 
 /******************************************************************************