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/*
* Linux DTrace
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
#!/usr/sbin/dtrace -s
#pragma D option quiet
/*
* SYNOPSIS
* sudo ./302actions-strings.d
*
* DESCRIPTION
* There are functions to manipulate strings.
*/
BEGIN
{
/* find the length of a string */
printf("length of 'abcde' is %d\n", strlen("abcde"));
/* various other functions also resemble libc */
printf("text starts with first 'd': %s\n", strchr("abcdefedbca", 'd'));
printf("text starts with last 'd': %s\n", strrchr("abcdefedbca", 'd'));
printf("text starts with 'def': %s\n", strstr("abcdefedbca", "def"));
/* break a string up into tokens */
printf("token #1: %s\n", strtok("hello world", " "));
printf("token #2: %s\n", strtok(NULL, " "));
/* join (concatenate) strings */
printf("join 'abc' and 'def': %s\n", strjoin("abc", "def"));
/* dump part of a string */
printf("start at char #4: %s\n", substr("abcdefghij", 4));
/* dump part of a string, only 2 chars */
printf("start at char #4: %s\n", substr("abcdefghij", 4, 2));
/* find index of a substring */
printf("found at char #%d\n", index("abcdefghij", "def"));
printf("found at char #%d\n", rindex("abcdefghij", "def"));
printf("found at char #%d\n", index("abcdefghij", "XXXX"));
/* convert an integer to a string */
printf("123000 + 456 = %s\n", lltostr(123000 + 456));
exit(0);
}
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