--- l2_spec.c 2001/11/07 16:17:09 1.1
+++ l2_spec.c 2001/11/07 16:35:18 1.2
@@ -1,35 +1,57 @@
-
-#include <stdio.h>
+/*
+** L2 - OSSP Logging Library
+** Copyright (c) 2001 The OSSP Project (http://www.ossp.org/)
+** Copyright (c) 2001 Cable & Wireless Deutschland (http://www.cw.com/de/)
+**
+** This file is part of OSSP L2, a flexible logging library which
+** can be found at http://www.ossp.org/pkg/l2/.
+**
+** Permission to use, copy, modify, and distribute this software for
+** any purpose with or without fee is hereby granted, provided that
+** the above copyright notice and this permission notice appear in all
+** copies.
+**
+** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+** SUCH DAMAGE.
+**
+** l2_spec.c: channel tree specification support
+*/
#include "l2.h"
#include "l2_p.h"
#include "l2_spec.h"
#include "l2_spec_parse.h"
+/* prototypes for Flex-generated scanner */
extern int l2_spec_lex_init(void *);
extern int l2_spec_lex_destroy(void *);
extern void l2_spec_set_extra(void *, void *);
-extern int l2_spec_debug;
-void dump(int level, l2_channel_t *ch)
-{
- l2_channel_t *chD;
-
- fprintf(stderr, "%*s%s (0x%lx)\n", level*4, "", ch->handler.name, ch);
- chD = NULL;
- while ((l2_channel_downstream(ch, &chD)) == L2_OK)
- dump(level+1, chD);
- return;
-}
+/* prototypes for Bison-generated parser */
+extern int l2_spec_parse(void *);
+/* build a channel tree according to a textual specification */
l2_result_t l2_spec(l2_channel_t **ch, l2_env_t *env, const char *spec)
{
l2_spec_ctx_t ctx;
void *yyscan;
+ /* initialize scanner */
l2_spec_lex_init(&yyscan);
l2_spec_set_extra(&ctx, yyscan);
+ /* establish our own context which is passed
+ through the parser and scanner */
ctx.yyscan = yyscan;
ctx.inputptr = spec;
ctx.inputbuf = spec;
@@ -39,18 +61,16 @@
ctx.chTmp = NULL;
ctx.rv = L2_OK;
-#if 0
- l2_spec_debug = 1;
-#endif
+ /* start the parser loop */
if (l2_spec_parse(&ctx))
ctx.rv = (ctx.rv == L2_OK ? L2_ERR_INT : ctx.rv);
- *ch = ctx.ch;
-
- dump(0, ctx.ch);
-
+ /* destroy scanner */
l2_spec_lex_destroy(yyscan);
+ /* provide root/top-level channel as result */
+ *ch = ctx.ch;
+
return ctx.rv;
}
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