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-rw-r--r--tools/src/qsre.c226
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diff --git a/tools/src/qsre.c b/tools/src/qsre.c
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+/**
+ * qsre.c: pcre expression match test tool
+ *
+ * See http://mod-qos.sourceforge.net/ for further
+ * details.
+ *
+ * Copyright (C) 2023 Pascal Buchbinder
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+static const char revision[] = "$Id: qsre.c 2654 2022-05-13 09:12:42Z pbuchbinder $";
+
+/* system */
+#include <stdio.h>
+#include <string.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+/* apr */
+#include <apr.h>
+#include <apr_strings.h>
+#include <apr_time.h>
+#include <apr_general.h>
+#include <apr_lib.h>
+#include <apr_portable.h>
+#include <apr_support.h>
+
+#define PCRE2_CODE_UNIT_WIDTH 8
+#include <pcre2.h>
+
+#include "qs_util.h"
+
+#define QS_OVECCOUNT 100
+
+
+static void usage(const char *cmd, int man) {
+ if(man) {
+ //.TH [name of program] [section number] [center footer] [left footer] [center header]
+ printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date,
+ man_version, cmd);
+ }
+ printf("\n");
+
+ if(man) {
+ printf(".SH NAME\n");
+ }
+ qs_man_print(man, "%s matches a regular expression against test strings.\n", cmd);
+ printf("\n");
+
+ if(man) {
+ printf(".SH SYNOPSIS\n");
+ }
+ qs_man_print(man, "%s%s <string>|<path> <pcre>|<path>\n", man ? "" : "Usage: ", cmd);
+ printf("\n");
+
+ if(man) {
+ printf(".SH DESCRIPTION\n");
+ } else {
+ printf("Summary\n");
+ }
+ qs_man_print(man, "Regular expression test tool.\n");
+ qs_man_print(man, "The provided regular expression (pcre, caseless matching, \".\" matches anything\n");
+ qs_man_print(man, "incl. newline) is appplied against the provided test strings to verify if the\n");
+ qs_man_print(man, "pattern matches.\n");
+ printf("\n");
+
+ if(man) {
+ printf(".SH OPTIONS\n");
+ } else {
+ printf("Options\n");
+ }
+ if(man) printf(".TP\n");
+ qs_man_print(man, " <string>|<path>\n");
+ if(man) printf("\n");
+ qs_man_print(man, " The first argument either defines a single test string of a path to\n");
+ qs_man_print(man, " a file containing either multiple test strings or a test pattern with\n");
+ qs_man_print(man, " newline characters (text).\n");
+ if(man) printf("\n.TP\n");
+ qs_man_print(man, " <pcre>|<path>\n");
+ if(man) printf("\n");
+ qs_man_print(man, " The second argument either defines a regular expression or a path to\n");
+ qs_man_print(man, " a file containing the expression.\n");
+ printf("\n");
+
+ if(man) {
+ printf(".SH SEE ALSO\n");
+ printf("qsdt(1), qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrespeed(1), qsrotate(1), qssign(1), qstail(1)\n");
+ printf(".SH AUTHOR\n");
+ printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n");
+ } else {
+ printf("See http://mod-qos.sourceforge.net/ for further details.\n");
+ }
+ if(man) {
+ exit(0);
+ } else {
+ exit(1);
+ }
+}
+
+static int rmatch(const char *line, qs_regex_t *preg) {
+ qs_regmatch_t regm[QS_MAX_REG_MATCH];
+ int rc_c = -1;
+ do {
+ int rc = qs_regexec_len(preg, line, strlen(line), QS_MAX_REG_MATCH, regm, 0);
+ if(rc >= 0) {
+ int ix;
+ rc_c = 0;
+ printf("[%.*s]", regm[0].rm_eo - regm[0].rm_so, &line[regm[0].rm_so]);
+ for(ix = 1; ix < rc; ix++) {
+ printf(" $%d=%.*s", ix, regm[ix].rm_eo - regm[ix].rm_so, &line[regm[ix].rm_so]);
+ }
+ line = &line[regm[0].rm_eo];
+ } else {
+ line = NULL;
+ }
+ } while(line && line[0]);
+ return rc_c;
+}
+
+int main(int argc, const char *const argv[]) {
+ const char *errptr = NULL;
+ int erroffset;
+ qs_regex_t *preg;
+ int rc_c = -1;
+ const char *line;
+ const char *in;
+ const char *pattern;
+ FILE *file;
+ apr_pool_t *pool;
+ char *raw = "";
+ int linenr = 0;
+
+ const char *cmd = strrchr(argv[0], '/');
+
+ apr_app_initialize(&argc, &argv, NULL);
+ apr_pool_create(&pool, NULL);
+ if(cmd == NULL) {
+ cmd = (char *)argv[0];
+ } else {
+ cmd++;
+ }
+
+ argc--;
+ argv++;
+ if(argc != 2) {
+ if(argc == 1 && strcmp(argv[0], "--man") == 0) {
+ usage(cmd, 1);
+ } else {
+ usage(cmd, 0);
+ }
+ }
+ in = argv[0];
+ pattern = argv[1];
+
+ file = fopen(pattern, "r");
+ if(file) {
+ char readline[MAX_LINE];
+ if(fgets(readline, MAX_LINE-1, file) != NULL) {
+ int len = strlen(readline);
+ while(len > 0 && readline[len] < 32) {
+ readline[len] = '\0';
+ len--;
+ }
+ pattern = apr_pstrdup(pool, readline);
+ }
+ fclose(file);
+ }
+ printf("expression: %s\n", pattern);
+
+ preg = apr_palloc(pool, sizeof(qs_regex_t));
+ if(qs_regcomp(preg, pattern, PCRE2_DOTALL|PCRE2_CASELESS) != 0) {
+ fprintf(stderr, "ERROR, rule <%s> could not compile regular expression\n", pattern);
+ exit(1);
+ }
+ apr_pool_pre_cleanup_register(pool, preg, qs_pregfree);
+
+ file = fopen(in, "r");
+ if(file) {
+ char readline[MAX_LINE];
+ while(fgets(readline, MAX_LINE-1, file) != NULL) {
+ int len = strlen(readline);
+ linenr++;
+ printf("line %.3d: ", linenr);
+ raw = apr_pstrcat(pool, raw, readline, NULL);
+ while(len > 0 && readline[len] < 32) {
+ readline[len] = '\0';
+ len--;
+ }
+ if(readline[0] >= 32 && strlen(readline) > 0) {
+ line = readline;
+ rc_c = rmatch(line, preg);
+ }
+ printf("\n");
+ }
+ fclose(file);
+ printf("entire content match:\n");
+ rc_c = rmatch(raw, preg);
+ printf("\n");
+ } else {
+ line = in;
+ rc_c = rmatch(line, preg);
+ printf("\n");
+ }
+ if(rc_c < 0) {
+ printf("no match\n");
+ return 2;
+ }
+ return 0;
+}
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