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authorSergey Poznyakoff <gray@gnu.org.ua>2011-05-15 10:51:03 (GMT)
committer Sergey Poznyakoff <gray@gnu.org.ua>2011-05-15 11:05:39 (GMT)
commita0826b4c7cd66c4862d9b61bb7e14d73fcba28f6 (patch) (side-by-side diff)
tree71762fca263967e5803ce803b0a0aa94555e125d /src/parser.c
parentfd64fa62bc68d8c2e0d693033e874fcc1f023544 (diff)
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Provide a framework for multiple parsers. Implement meta1 parser.
* Makefile.am (EXTRA_DIST): Add build-aux/yyrename * am/grecs.m4: New options: parser-meta1 and all-parsers * src/.gitignore: Update. * src/Make.am [GRECS_COND_META1_PARSER]: Set GRECS_PARSER_META1 and GRECS_EXTRA_META1 (GRECS_SRC): Add new files. (EXTRA_DIST): Add GRECS_EXTRA_META1. (LEXCOMPILE,YACCCOMPILE): Redefine * src/grecs-gram.y: Don't include yygrecs.h (grecs_vasprintf,grecs_asprintf): Move to a separate file. (grecs_parse): Rename to grecs_grecs_parser. Actual grecs_parse is defined in parser.c (grecs_gram_trace): Move to parser.c * src/grecs-lex.l: Don't include yygrecs.h Use line_acc functions. * src/grecs.h (grecs_trace_flags): New extern. (GRECS_TRACE_GRAM, GRECS_TRACE_LEX): New flags. (grecs_lex_begin): Change signature. (grecs_grecs_parser,grecs_meta1_parser): New protos. (grecs_line_acc_create) (grecs_line_acc_free,grecs_line_acc_grow_char) (grecs_line_acc_grow_char_unescape) (grecs_line_acc_grow) (grecs_line_acc_grow_unescape_last): New protos. (GRECS_TXTACC_BUFSIZE): New const (grecs_txtacc_create,grecs_txtacc_free) (grecs_txtacc_grow,grecs_txtacc_finish) (grecs_txtacc_free_string): New protos. (grecs_value_match): New proto. * src/wordsplit.c (quote_transtab): Translate \" * src/yygrecs.h: Remove. * src/yytrans: New file. * build-aux/yyrename: New file. * src/asprintf.c: New file. * src/lineacc.c: New file. * src/meta1-gram.y: New file. * src/meta1-lex.l: New file. * src/parser.c: New file. * src/txtacc.c: New file. * doc/grecs_parse.3: Update. * doc/GRECS_SETUP.3: Update.
Diffstat (limited to 'src/parser.c') (more/less context) (show whitespace changes)
-rw-r--r--src/parser.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/parser.c b/src/parser.c
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+++ b/src/parser.c
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+/* grecs - Gray's Extensible Configuration System
+ Copyright (C) 2007-2011 Sergey Poznyakoff
+
+ Grecs 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; either version 3 of the License, or (at your
+ option) any later version.
+
+ Grecs 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 Grecs. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "grecs.h"
+
+int grecs_error_count;
+int grecs_default_port = 0;
+
+int grecs_trace_flags = 0;
+
+#ifndef GRECS_DEFAULT_PARSER
+# define GRECS_DEFAULT_PARSER grecs_grecs_parser
+#endif
+
+struct grecs_node *(*grecs_parser_fun)(const char *name, int trace) =
+ GRECS_DEFAULT_PARSER;
+
+void
+grecs_gram_trace(int n)
+{
+ if (n)
+ grecs_trace_flags |= GRECS_TRACE_GRAM;
+ else
+ grecs_trace_flags &= ~GRECS_TRACE_GRAM;
+}
+
+void
+grecs_lex_trace(int n)
+{
+ if (n)
+ grecs_trace_flags |= GRECS_TRACE_LEX;
+ else
+ grecs_trace_flags &= ~GRECS_TRACE_LEX;
+}
+
+struct grecs_node *
+grecs_parse(const char *name)
+{
+ grecs_error_count = 0;
+ return grecs_parser_fun(name, grecs_trace_flags);
+}

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