--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/regex_parser.c Fri Dec 28 15:44:28 2012 +0100
@@ -0,0 +1,134 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ * Copyright 2011 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.
+ *
+ * regex_parser.c
+ *
+ * Created on: 26.01.2012
+ * Author: Mike
+ */
+
+#include "regex_parser.h"
+
+regex_parser_t* new_regex_parser_t() {
+ regex_parser_t* ret = malloc(sizeof(regex_parser_t));
+ if (ret != NULL) {
+ ret->pattern_list = new_string_list_t();
+ ret->matched_lines = 0;
+ ret->pattern_match = 0;
+ ret->compiled_patterns = NULL;
+ ret->compiled_pattern_count = 0;
+ }
+ return ret;
+}
+
+void regex_destcomppats(regex_parser_t* parser) {
+ if (parser->compiled_patterns != NULL) {
+ for (int i = 0 ; i < parser->compiled_pattern_count ; i++) {
+ if (parser->compiled_patterns[i] != NULL) {
+ free(parser->compiled_patterns[i]);
+ }
+ }
+ free(parser->compiled_patterns);
+ parser->compiled_patterns = NULL;
+ parser->compiled_pattern_count = 0;
+ }
+}
+
+void destroy_regex_parser_t(regex_parser_t* parser) {
+ regex_destcomppats(parser);
+ destroy_string_list_t(parser->pattern_list);
+ free(parser);
+}
+
+bool regex_parser_matching(regex_parser_t* parser) {
+ return parser->pattern_match > 0;
+}
+
+int regex_parser_do(regex_parser_t* parser, char* input) {
+ int err = REG_NOMATCH;
+ if (parser->compiled_pattern_count > 0) {
+ regmatch_t match;
+
+ if (regex_parser_matching(parser)) {
+ parser->matched_lines++;
+
+ err = regexec(parser->compiled_patterns[parser->pattern_match],
+ input, 1, &match, 0);
+ if (err > 0 && err != REG_NOMATCH) {
+ fprintf(stderr, "Regex-Error: 0x%08x", err);
+ }
+ if (err == 0) {
+ parser->pattern_match = 0;
+ /* do not match line, if it does not end with the pattern */
+ if (match.rm_eo < strlen(input)) {
+ parser->matched_lines--;
+ }
+ }
+ } else {
+ for (int i = 0 ; i < parser->compiled_pattern_count - 1 ; i += 2) {
+ err = regexec(parser->compiled_patterns[i], input, 1, &match, 0);
+ if (err > 0 && err != REG_NOMATCH) {
+ fprintf(stderr, "Regex-Error: 0x%08x", err);
+ }
+ if (err == 0) {
+ parser->pattern_match = i+1;
+ parser->matched_lines = 0;
+ /* Check, if end pattern is also in this line */
+ regex_parser_do(parser, input);
+ /* do not match line, if it does not start with the pattern */
+ if (match.rm_so > 0 && parser->matched_lines > 0) {
+ parser->matched_lines--;
+ }
+ break;
+ }
+ }
+ }
+ }
+ return err;
+}
+
+bool regex_compile_all(regex_parser_t* parser) {
+ bool success = true;
+ size_t pcount = parser->pattern_list->count;
+ if (pcount > 0) {
+ regex_destcomppats(parser);
+ parser->compiled_patterns = calloc(pcount, sizeof(regex_t));
+ parser->compiled_pattern_count = pcount;
+
+ regex_t* re;
+ for (int i = 0 ; i < pcount ; i++) {
+ re = malloc(sizeof(regex_t));
+ if (regcomp(re, parser->pattern_list->items[i], REG_EXTENDED) == 0) {
+ parser->compiled_patterns[i] = re;
+ } else {
+ fprintf(stderr, "Cannot compile pattern: %s\n",
+ (parser->pattern_list->items[i]));
+ parser->compiled_patterns[i] = NULL;
+ success = false;
+ }
+ }
+ }
+ return success;
+}