mirror of
https://github.com/sheumann/hush.git
synced 2024-12-28 07:30:23 +00:00
9a7cef930f
xstrdup'ing and memory consumption. Made linewrap saner. regex matching code was awful - still buggy, but not as leaky as before. Made buffer size configurable. Killed several static and on-stack buffers. Hopefully eliminated staircase effect on Ctrl-C (unable to reproduce).
69 lines
1.5 KiB
C
69 lines
1.5 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 "libbb.h"
|
|
|
|
/* This function reads an entire line from a text file, up to a newline
|
|
* or NUL byte, inclusive. It returns a malloc'ed char * which must be
|
|
* stored and free'ed by the caller. If end is null '\n' isn't considered
|
|
* end 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) {
|
|
linebuf = xrealloc(linebuf, linebufsz += 80);
|
|
}
|
|
linebuf[idx++] = (char) ch;
|
|
if (!ch || (end && ch == '\n'))
|
|
break;
|
|
}
|
|
if (end)
|
|
*end = idx;
|
|
if (linebuf) {
|
|
// huh, does fgets discard prior data on error like this?
|
|
// I don't think so....
|
|
//if (ferror(file)) {
|
|
// free(linebuf);
|
|
// return NULL;
|
|
//}
|
|
linebuf = xrealloc(linebuf, idx+1);
|
|
linebuf[idx] = '\0';
|
|
}
|
|
return linebuf;
|
|
}
|
|
|
|
/* Get line, including trailing \n if any */
|
|
char *xmalloc_fgets(FILE * file)
|
|
{
|
|
int i;
|
|
|
|
return bb_get_chunk_from_file(file, &i);
|
|
}
|
|
|
|
/* Get line. Remove trailing \n */
|
|
char *xmalloc_getline(FILE * file)
|
|
{
|
|
int i;
|
|
char *c = bb_get_chunk_from_file(file, &i);
|
|
|
|
if (i && c[--i] == '\n')
|
|
c[i] = '\0';
|
|
|
|
return c;
|
|
}
|