*   Copyright (c) 2001, 2002 Michael J. Roberts.  All Rights Reserved.

 *   

 *   Please see the accompanying license file, LICENSE.TXT, for information

 *   on using and copying this software.  

 */

/*

Name

  test_regex.cpp - regular expression parser tester

Function

  Simple interactive regular expression tester.  Asks for patterns and

  strings to test from the keyboard and displays the results.

Notes

Modified

  11/11/01 MJRoberts  - Creation

*/

#include <stdio.h>

#include <stdlib.h>

#include "vmregex.h"

#include "t3test.h"

int main()

{

    CRegexParser regex;

    CRegexSearcherSimple searcher(&regex);

    /* initialize for testing */

    test_init();

    /* read patterns and match strings interactively */

    for (;;)

    {

        char pat[128];

        char str[128];

        size_t len;

        /* read the pattern - stop on EOF */

        printf("Enter pattern: ");

        if (fgets(pat, sizeof(pat), stdin) == 0)

            break;

        /* trim the trailing newline, if any */

        if ((len = strlen(pat)) != 0 && pat[len-1] == '\n')

            pat[len-1] = '\0';

        /* read strings to match against the pattern */

        for (;;)

        {

            int idx;

            int reslen;

            /* read the string - stop on EOF or an empty line */

            printf("Enter string:  ");

            if (fgets(str, sizeof(str), stdin) == 0

                || str[0] == '\0'

                || str[0] == '\n')

                break;

            /* trim the trailing newline, if any */

            if ((len = strlen(str)) != 0 && str[len-1] == '\n')

                str[len-1] = '\0';

            /* match it */

            idx = searcher.compile_and_search(pat, strlen(pat),

                                              str, str, strlen(str), &reslen);

            /* report the results */

            if (idx == -1)

                printf("[Not found]\n");

            else

                printf("Found: index=%d, %.*s\n", idx, reslen, str + idx);

        }

    }

    return 0;