/* 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 condi-
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   1.  Redistributions of source code must retain the above copy-
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      notice, this list of  conditions	and  the  following  dis-
claimer.

   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 pro-
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   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY  EX-
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   OR  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IM-
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STRGSUB(3pub)						       C Programmer's Manual						     STRGSUB(3pub)

*/

NAME

       strgsub - substitute all occurences of pattern with another string

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 terminat-
       ing '') 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)

Publib							       C Programmer's Manual						     STRGSUB(3pub)