mirror of
https://github.com/sheumann/hush.git
synced 2024-12-23 05:29:58 +00:00
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Utility routines.
|
|
*
|
|
* Copyright (C) 2005, 2006 Rob Landley <rob@landley.net>
|
|
* Copyright (C) 2004 Erik Andersen <andersen@codepoet.org>
|
|
* Copyright (C) 2001 Matt Krai
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#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 or NUL byte. It returns a malloc'ed char * which must be
|
|
* stored and free'ed by the caller. If end is null '\n' isn't considered
|
|
* and of line. If end isn't null, length of the chunk read is stored in it. */
|
|
|
|
char *bb_get_chunk_from_file(FILE *file, int *end)
|
|
{
|
|
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 += 80);
|
|
}
|
|
linebuf[idx++] = (char)ch;
|
|
if (!ch || (end && ch == '\n')) break;
|
|
}
|
|
if (end) *end = idx;
|
|
if (linebuf) {
|
|
if (ferror(file)) {
|
|
free(linebuf);
|
|
return NULL;
|
|
}
|
|
linebuf[idx] = 0;
|
|
}
|
|
return linebuf;
|
|
}
|
|
|
|
/* Get line, including trailing /n if any */
|
|
char *bb_get_line_from_file(FILE *file)
|
|
{
|
|
int i;
|
|
return bb_get_chunk_from_file(file, &i);
|
|
}
|
|
|
|
/* Get line. Remove trailing /n */
|
|
char *bb_get_chomped_line_from_file(FILE *file)
|
|
{
|
|
int i;
|
|
char *c=bb_get_chunk_from_file(file, &i);
|
|
if(i) c[--i]=0;
|
|
|
|
return c;
|
|
}
|