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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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vol_400
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424_02
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ED-157
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load_buffer.c
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1993-09-10
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/*
* Copyright (C) 1992 by Rush Record (rhr@clio.rice.edu)
*
* This file is part of ED.
*
* ED is free software; you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Foundation.
*
* ED is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with ED
* (see the file COPYING). If not, write to the Free Software Foundation, 675
* Mass Ave, Cambridge, MA 02139, USA.
*/
#include "opsys.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "memory.h"
#include "rec.h"
#include "buffer.h"
/******************************************************************************\
|Routine: load_buffer
|Callby: edit word_fill
|Purpose: Loads a buffer with the contents of a string, handling appearances
| of <cr> in the string by starting a new record in the buffer.
|Arguments:
| buffer is the buffer that receives the record(s) from the string.
| string is the string that may contain <cr> characters.
| i is the length of the meaningful data in the string.
\******************************************************************************/
void load_buffer(buffer,string,i)
buf_ptr buffer;
Char *string;
Int i;
{
register Int j,l;
register rec_ptr r;
buffer_empty(buffer);
string[i++] = '\r';
buffer->nrecs = 0;
for(l = j = 0;j < i;j++)
if(string[j] == '\r')
{
buffer->nrecs++;
r = (rec_ptr)imalloc(sizeof(rec_node));
r->data = (Char *)imalloc(j - l + 1);
if(j > l)
memcpy(r->data,string + l,j - l);
r->data[j - l] = '\0';
r->length = j - l;
r->recflags = 1; /* it is a freeable buffer */
insq(r,buffer->last);
l = j + 1;
}
}