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/** BEGIN COPYRIGHT BLOCK
* This Program 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; version 2 of the License.
*
* This Program 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
* this Program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "txtfile.h"
#if 0
char fileBuffer[FILE_BUFFER_SIZE + 1];
char *fbCurrent;
int fbSize;
int fbStatus;
#endif
TEXTFILE * OpenTextFile(char *filename, int access)
{
TEXTFILE *txtfile;
FILE *file;
int status;
if (access == TEXT_OPEN_FOR_WRITE) {
status = TEXT_FILE_WRITING;
file = fopen(filename, "w+");
}
else {
status = TEXT_FILE_READING;
file = fopen(filename, "r");
}
if (file == NULL)
return NULL;
txtfile = (TEXTFILE *) malloc (sizeof(TEXTFILE));
memset(txtfile, 0, sizeof(TEXTFILE));
txtfile->file = file;
txtfile->fbStatus = status;
txtfile->fbCurrent = txtfile->fileBuffer;
*txtfile->fbCurrent = '\0';
txtfile->fbSize = 0;
return txtfile;
}
void CloseTextFile(TEXTFILE *txtfile)
{
if (txtfile) {
fclose(txtfile->file);
free(txtfile);
}
}
int FillTextBuffer(TEXTFILE *txtfile)
{
int nLeft, size;
nLeft = strlen(txtfile->fbCurrent);
memcpy(txtfile->fileBuffer, txtfile->fbCurrent, nLeft+1);
size = fread(txtfile->fileBuffer + nLeft, 1, FILE_BUFFER_SIZE - nLeft, txtfile->file);
if (size == 0)
return 0;
txtfile->fbCurrent = txtfile->fileBuffer;
*(txtfile->fbCurrent + size + nLeft) = '\0';
txtfile->fbSize = size + nLeft;
return size;
}
int ReadTextLine(TEXTFILE *txtfile, char *linebuf)
{
char *p, *q;
if (txtfile->fbStatus == TEXT_FILE_DONE)
return -1;
p = txtfile->fbCurrent;
q = strchr(p, '\n');
if (q)
{
*q = '\0';
strcpy(linebuf, p);
txtfile->fbCurrent = q + 1;
return strlen(linebuf);
}
else
{
if (FillTextBuffer(txtfile) == 0)
{ /* Done with file reading,
return last line
*/
txtfile->fbStatus = TEXT_FILE_DONE;
if (*txtfile->fbCurrent) {
strcpy(linebuf, txtfile->fbCurrent);
CloseTextFile(txtfile);
return strlen(linebuf);
}
else {
CloseTextFile(txtfile);
return -1;
}
}
else {
p = txtfile->fbCurrent;
q = strchr(p, '\n');
if (q)
{
*q = '\0';
strcpy(linebuf, p);
txtfile->fbCurrent = q + 1;
}
else
{
strcpy(linebuf, txtfile->fbCurrent);
txtfile->fbCurrent = txtfile->fbCurrent + strlen(linebuf);
}
}
return strlen(linebuf);
}
}
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