STRFIND(3GEN) String Pattern-Matching Library Functions STRFIND(3GEN)
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 = '\0'; /* 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) March 10, 2023 STRFIND(3GEN)
