xref: /illumos-gate/usr/src/man/man3gen/strfind.3gen (revision 11845c326ad8c691a402c512ccf50d1792fd6aab)
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STRFIND 3GEN "March 10, 2023"
NAME
strfind, strrspn, strtrns, str - string manipulations
SYNOPSIS
cc [ flag ... ] file ... -lgen [ library ... ]
#include <libgen.h>

int strfind(const char *as1, const char *as2);

char *strrspn(const char *string, const char *tc);

char *strtrns(const char *string, const char *old, const char *new,
 char *result);
DESCRIPTION
The strfind() function returns the offset of the first occurrence of the second string, as2, if it is a substring of string as1. If the second string is not a substring of the first string strfind() returns -1.

The strrspn() function trims characters from a string. It searches from the end of string for the first character that is not contained in tc. If such a character is found, strrspn() returns a pointer to the next character; otherwise, it returns a pointer to string.

The strtrns() function transforms string and copies it into result. Any character that appears in old is replaced with the character in the same position in new. The new result is returned.

USAGE
When compiling multithreaded applications, the _REENTRANT flag must be defined on the compile line. This flag should only be used in multithreaded applications.
EXAMPLES
Example 1 An example of the strfind() function.
/* find offset to substring "hello" within as1 */
i = strfind(as1, "hello");
/* trim junk from end of string */
s2 = strrspn(s1, "*?#$%");
*s2 = '\e0';
/* transform lower case to upper case */
a1[] = "abcdefghijklmnopqrstuvwxyz";
a2[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
s2 = strtrns(s1, a1, a2, s2);
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
ATTRIBUTE TYPE ATTRIBUTE VALUE
MT-Level MT-Safe
SEE ALSO
string (3C), attributes (7)