util-vserver-0.30.208

[util-vserver.git] / lib / val2text.hc

diff --git a/lib/val2text.hc b/lib/val2text.hc
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+++ b/lib/val2text.hc
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+// $Id: val2text.hc,v 1.3 2004/05/08 01:27:48 ensc Exp $    --*- c -*--
+
+// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//  
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//  
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+
+#define VAL2TEXT(TYPE,SHORT)                                           \
+  ssize_t                                                              \
+  utilvserver_value2text_##SHORT(char const *str, size_t len,          \
+                                struct Mapping_ ##SHORT const *map,    \
+                                size_t map_len)                        \
+  {                                                                    \
+    size_t     i;                                                      \
+    if (len==0) len=strlen(str);                                       \
+                                                                       \
+    for (i=0; i<map_len; ++i)                                          \
+      if (len==map[i].len &&                                           \
+         strncasecmp(map[i].id, str, len)==0)                          \
+       return i;                                                       \
+                                                                       \
+    return -1;                                                         \
+  }
+
+#define TEXT2VAL(TYPE,SHORT)                                           \
+  static ssize_t                                                       \
+  searchValue(TYPE val,                                                        \
+             struct Mapping_##SHORT const *map,  size_t map_len)       \
+  {                                                                    \
+    size_t             i;                                              \
+    for (i=0; i<map_len; ++i)                                          \
+      if (val == map[i].val) return i;                                 \
+    return -1;                                                         \
+  }                                                                    \
+                                                                       \
+  ssize_t                                                              \
+  utilvserver_text2value_##SHORT(TYPE *val,                            \
+                                struct Mapping_##SHORT const *map,     \
+                                size_t map_len)                        \
+  {                                                                    \
+    ssize_t    idx;                                                    \
+    TYPE       del_val;                                                \
+    if (*val==0)                                                       \
+      return -1;                                                       \
+                                                                       \
+    del_val = *val;                                                    \
+    idx     = searchValue(del_val, map, map_len);                      \
+                                                                       \
+    if (idx==-1) {                                                     \
+      size_t   i;                                                      \
+      for (i=0; i<sizeof(*val)*8 && (*val&(1<<i))==0; ++i) {}          \
+      del_val = (1<<i);                                                        \
+      idx     = searchValue(del_val, map, map_len);                    \
+    }                                                                  \
+    *val &= ~del_val;                                                  \
+    return idx;                                                                \
+  }