mirror of
https://github.com/sheumann/hush.git
synced 2024-11-19 08:31:11 +00:00
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* Copyright (C) many different people.
|
|
* If you wrote this, please acknowledge your work.
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "libbb.h"
|
|
|
|
/* get_line_from_file() - This function reads an entire line from a text file,
|
|
* up to a newline. It returns a malloc'ed char * which must be stored and
|
|
* free'ed by the caller. If 'c' is nonzero, the trailing '\n' (if any)
|
|
* is removed. In event of a read error or EOF, NULL is returned. */
|
|
|
|
static char *private_get_line_from_file(FILE *file, int c)
|
|
{
|
|
#define GROWBY (80) /* how large we will grow strings by */
|
|
|
|
int ch;
|
|
int idx = 0;
|
|
char *linebuf = NULL;
|
|
int linebufsz = 0;
|
|
|
|
while ((ch = getc(file)) != EOF) {
|
|
/* grow the line buffer as necessary */
|
|
if (idx > linebufsz - 2) {
|
|
linebuf = xrealloc(linebuf, linebufsz += GROWBY);
|
|
}
|
|
linebuf[idx++] = (char)ch;
|
|
if (!ch) return linebuf;
|
|
if (c<2 && ch == '\n') {
|
|
if (c) {
|
|
--idx;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (linebuf) {
|
|
if (ferror(file)) {
|
|
free(linebuf);
|
|
return NULL;
|
|
}
|
|
linebuf[idx] = 0;
|
|
}
|
|
return linebuf;
|
|
}
|
|
|
|
extern char *bb_get_line_from_file(FILE *file)
|
|
{
|
|
return private_get_line_from_file(file, 0);
|
|
}
|
|
|
|
extern char *bb_get_chomped_line_from_file(FILE *file)
|
|
{
|
|
return private_get_line_from_file(file, 1);
|
|
}
|
|
|
|
extern char *bb_get_chunk_from_file(FILE *file)
|
|
{
|
|
return private_get_line_from_file(file, 2);
|
|
}
|
|
|
|
|
|
/* END CODE */
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|