{GPL, other}: Relicense to MIT license.

[collectd.git] / src / liboconfig / parser.y

diff --git a/src/liboconfig/parser.y b/src/liboconfig/parser.y
index 48b9bf3..d91df8c 100644 (file)
--- a/src/liboconfig/parser.y
+++ b/src/liboconfig/parser.y
@@ -1,19 +1,27 @@
 /**
- * oconfig - src/parser.y
- * Copyright (C) 2007  Florian octo Forster <octo at verplant.org>
+ * collectd - src/liboconfig/parser.y
+ * Copyright (C) 2007,2008  Florian Forster
  *
- * 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; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
  *
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
- * 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.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *   Florian Forster <octo at collectd.org>
  */
 
 %{
@@ -46,7 +54,7 @@ extern char           *c_file;
 }
 
 %token <number> NUMBER
-%token <boolean> TRUE FALSE
+%token <boolean> BTRUE BFALSE
 %token <string> QUOTED_STRING UNQUOTED_STRING
 %token SLASH OPENBRAC CLOSEBRAC EOL
 
@@ -65,6 +73,9 @@ extern char           *c_file;
 %type <sl> statement_list
 %type <ci> entire_file
 
+/* pass an verbose, specific error message to yyerror() */
+%error-verbose
+
 %%
 string:
        QUOTED_STRING           {$$ = unquote ($1);}
@@ -73,8 +84,8 @@ string:
 
 argument:
        NUMBER                  {$$.value.number = $1; $$.type = OCONFIG_TYPE_NUMBER;}
-       | TRUE                  {$$.value.boolean = 1; $$.type = OCONFIG_TYPE_BOOLEAN;}
-       | FALSE                 {$$.value.boolean = 0; $$.type = OCONFIG_TYPE_BOOLEAN;}
+       | BTRUE                 {$$.value.boolean = 1; $$.type = OCONFIG_TYPE_BOOLEAN;}
+       | BFALSE                {$$.value.boolean = 0; $$.type = OCONFIG_TYPE_BOOLEAN;}
        | string                {$$.value.string = $1; $$.type = OCONFIG_TYPE_STRING;}
        ;
 
@@ -109,6 +120,12 @@ option:
        ;
 
 block_begin:
+       OPENBRAC identifier CLOSEBRAC EOL
+       {
+        memset (&$$, '\0', sizeof ($$));
+        $$.key = $2;
+       }
+       |
        OPENBRAC identifier argument_list CLOSEBRAC EOL
        {
         memset (&$$, '\0', sizeof ($$));
@@ -139,6 +156,19 @@ block:
         $$.children = $2.statement;
         $$.children_num = $2.statement_num;
        }
+       | block_begin block_end
+       {
+        if (strcmp ($1.key, $2) != 0)
+        {
+               printf ("block_begin = %s; block_end = %s;\n", $1.key, $2);
+               yyerror ("Block not closed..\n");
+               exit (1);
+        }
+        free ($2); $2 = NULL;
+        $$ = $1;
+        $$.children = NULL;
+        $$.children_num = 0;
+       }
        ;
 
 statement:
@@ -151,7 +181,7 @@ statement_list:
        statement_list statement
        {
         $$ = $1;
-        if ($2.values_num > 0)
+        if (($2.values_num > 0) || ($2.children_num > 0))
         {
                 $$.statement_num++;
                 $$.statement = realloc ($$.statement, $$.statement_num * sizeof (oconfig_item_t));
@@ -160,7 +190,7 @@ statement_list:
        }
        | statement
        {
-        if ($1.values_num > 0)
+        if (($1.values_num > 0) || ($1.children_num > 0))
         {
                 $$.statement = malloc (sizeof (oconfig_item_t));
                 $$.statement[0] = $1;
@@ -182,6 +212,13 @@ entire_file:
         ci_root->children = $1.statement;
         ci_root->children_num = $1.statement_num;
        }
+       | /* epsilon */
+       {
+        ci_root = malloc (sizeof (oconfig_item_t));
+        memset (ci_root, '\0', sizeof (oconfig_item_t));
+        ci_root->children = NULL;
+        ci_root->children_num = 0;
+       }
        ;
 
 %%
@@ -213,8 +250,8 @@ static char *unquote (const char *orig)
        if ((len < 2) || (ret[0] != '"') || (ret[len - 1] != '"'))
                return (ret);
 
-       ret++;
        len -= 2;
+       memmove (ret, ret + 1, len);
        ret[len] = '\0';
 
        for (i = 0; i < len; i++)