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/* Copyright (C) 2000 Damir Zucic */
/*=============================================================================
extract_field.c
Purpose:
Extract field (substring) from ATOM or HETATM line (string).
Arguments are not checked: it should be done in caller!
Input:
(1) Output string pointer.
(2) Position of the first character.
(3) Position of the last character.
(4) Input string pointer.
Output:
(1) Substring stored at location pointed at by output string pointer.
(2) Return value.
Return value:
(1) Output substring length.
========includes:============================================================*/
#include <stdio.h>
#include <string.h>
/*======extract field (substring):===========================================*/
int ExtractField_ (char *substringP, int start, int end, char *stringP)
{
int i;
/* Copy (end - start + 1) characters: */
for (i = start; i <= end; i++) *(substringP + i - start) = *(stringP + i);
/* Terminate the substring: */
*(substringP + i - start) = '\0';
return strlen (substringP);
}
/*===========================================================================*/
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