X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Flistparser.hc;fp=lib%2Flistparser.hc;h=ebf5facbe083308f5cbdb1042b8a7173b671a267;hb=8cf13bb177d92c93eb73dc8939777150536c2d00;hp=0000000000000000000000000000000000000000;hpb=6bf3f95de36c804c97716b2d0bdf10680c559044;p=util-vserver.git

diff --git a/lib/listparser.hc b/lib/listparser.hc
new file mode 100644
index 0000000..ebf5fac
--- /dev/null
+++ b/lib/listparser.hc
@@ -0,0 +1,102 @@
+// $Id: listparser.hc,v 1.5 2005/04/24 20:23:11 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 TONUMBER_uint64(S,E,B)		strtoll(S,E,B)
+#define TONUMBER_uint32(S,E,B)		strtol (S,E,B)
+
+#define ISNUMBER(TYPE,SHORT)						\
+  static inline ALWAYSINLINE bool					\
+  isNumber_##SHORT(char const **str,size_t *len,TYPE *res,char end_chr) \
+  {									\
+    char	*err_ptr;						\
+    if (**str=='^') {							\
+      *res = ((TYPE)(1)) << TONUMBER_##SHORT(++*str, &err_ptr, 0);	\
+      if (len) --*len;							\
+    }									\
+    else								\
+      *res = TONUMBER_##SHORT(*str, &err_ptr, 0);			\
+    return err_ptr>*str && *err_ptr==end_chr;				\
+  }
+
+
+#define LISTPARSER(TYPE,SHORT)						\
+  ISNUMBER(TYPE,SHORT)							\
+  int									\
+  utilvserver_listparser_ ## SHORT(char const *str, size_t len,		\
+				   char const **err_ptr,		\
+				   size_t *err_len,			\
+				   TYPE * const flag,			\
+				   TYPE * const mask,			\
+				   TYPE (*func)(char const *,		\
+						size_t, bool *))	\
+  {									\
+    if (len==0) len = strlen(str);					\
+    for (;len>0;) {							\
+      char const	*ptr = strchr(str, ',');			\
+      size_t		cnt;						\
+      TYPE		tmp = 0;					\
+      bool		is_neg     = false;				\
+      bool		failed     = false;				\
+      									\
+      while (mask!=0 && len>0 && (*str=='!' || *str=='~')) {		\
+	is_neg = !is_neg;						\
+	++str;								\
+	--len;								\
+      }									\
+      									\
+      cnt = ptr ? (size_t)(ptr-str) : len;				\
+      if (cnt>=len) { cnt=len; len=0; }					\
+      else len-=(cnt+1);						\
+									\
+      if (cnt==0) 							\
+	failed = true;							\
+      else if (mask!=0 &&						\
+	       (strncasecmp(str,"all",cnt)==0 ||			\
+		strncasecmp(str,"any",cnt)==0))				\
+	tmp = ~(TYPE)(0);						\
+      else if (mask!=0 && strncasecmp(str,"none",cnt)==0) {}		\
+      else if (!isNumber_##SHORT(&str, &cnt, &tmp, str[cnt]))		\
+	tmp = (*func)(str,cnt, &failed);				\
+									\
+      if (!failed) {							\
+	if (!is_neg) *flag |=  tmp;					\
+	else         *flag &= ~tmp;					\
+	if (mask!=0) *mask |=  tmp;					\
+      }									\
+      else {								\
+	if (err_ptr) *err_ptr = str;					\
+	if (err_len) *err_len = cnt;					\
+	return -1;							\
+      }									\
+									\
+      if (ptr==0) break;						\
+      str = ptr+1;							\
+    }									\
+									\
+    if (err_ptr) *err_ptr = 0;						\
+    if (err_len) *err_len = 0;						\
+    return 0;								\
+  }