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Manual Reference Pages  -  STRGSUB (3)

/* Part of publib.

Copyright (c) 1994-2006 Lars Wirzenius. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ‘‘AS IS’’ AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

NAME

strgsub - substitute all occurences of pattern with another string

CONTENTS

Synopsis
Description
Example
Author

SYNOPSIS

#include <publib.h>
int strgsub(char *str, const char *pat, const char *sub, size_t max);

DESCRIPTION

strgsub finds all occurences of the pattern pat in the string str (using a method similar to strstr(3) to find the occurrences, i.e., no regular expressions), and replaces each with sub. If pat does not occur in str, no substitution is made. The size (including the terminating ’\0’) of the string after the substitutions may be at most max chars. If it would be larger, no substitutions are made.

Of course, if sub is an empty string, the occurences of the pattern are deleted from the string.

RETURN VALUE

strgsub returns the number of substitutions made, or -1 if the result would not have fit into max chars.

EXAMPLE

To substitute every "foo" with "bar" in a line, one might do the following.



strgsub(line, "foo", "bar", strlen(line)+1);



SEE ALSO

publib(3), strstr(3), strsub(3)

AUTHOR

Lars Wirzenius (lars.wirzenius@helsinki.fi)
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Publib STRGSUB (3) C Programmer's Manual

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