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.TH js_fgrep_offset 3 "August 2000" JS "js library reference"
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.if n .na
.SH NAME
js_fgrep_offset \- search 
.SH SYNOPSIS
.nf
.B #include "JsStr.h"
.sp
.B "js_fgrep_offset(js_string *exp, js_string *js, int offset)"
.fi
.SH DESCRIPTION
.B js_fgrep_offset
searches for the expression 
.B exp
in the string
.B js, 
starting at the offset
.B offset.

The expression 
.B exp
is simply a string that we look for in the string 
.B js.
No characters are considered metacharacters in the expression
.B exp.

The argument
.B offset
determines the minimum offset we will look for the expression
.B exp
at.  An offset of 0 indicates we start looking at the beginning of the
string
.B js, 
an offset of 1 means that we will start looking at the second character 
in the string, and so on.

.SH "RETURN VALUE"
.B js_fgrep_offset
returns -2 if the
.B exp
was not found in the string
.B js,
the offset of the first found expression if the string was found (0 if it 
was found at the top of the string, 1 if it was found starting at the 
second character in the string, etc), and 
.I JS_ERROR
if there was an error when searching for the expression.
.SH EXAMPLE
The following example will find the second string "34" in the string 
"3434567890":

.nf
	js_string *foo, *bar;
	foo = js_create(256,1);
	bar = js_create(256,1);
	js_str2js(foo,"3434567890",10,1);
	js_str2js(bar,"34",2,1);
	printf("%d\\n",js_fgrep_offset(bar,foo,1)); /* You will see 2 */
.fi

.SH AUTHOR
Sam Trenholme <kiwi-zttfryb@koala.samiam.org>