abee3d0e0d
Add xmalloc_fgetline_str which does strip terminator, and use it in dpkg instead of xmalloc_fgets_str. netstat: use xmalloc_fgets_str - allows to eat strings with NULs (this fixes bug with some weird /proc/net/unix input) function old new delta xmalloc_fgets_internal - 191 +191 xmalloc_fgetline_str - 18 +18 do_info 116 120 +4 unix_do_one 451 447 -4 tcp_do_one 423 419 -4 send_tree 369 365 -4 xmalloc_fgets_str 178 15 -163 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 1/4 up/down: 213/-175) Total: 38 bytes text data bss dec hex filename 778445 832 7344 786621 c00bd busybox_old 778483 832 7344 786659 c00e3 busybox_unstripped
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 2005, 2006 Rob Landley <rob@landley.net>
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* Copyright (C) 2004 Erik Andersen <andersen@codepoet.org>
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* Copyright (C) 2001 Matt Krai
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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/* This function reads an entire line from a text file, up to a newline
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* or NUL byte, inclusive. It returns a malloc'ed char * which
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* must be free'ed by the caller. If end is NULL '\n' isn't considered
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* end of line. If end isn't NULL, length of the chunk read is stored in it.
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* Return NULL if EOF/error */
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char *bb_get_chunk_from_file(FILE *file, int *end)
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{
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int ch;
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int idx = 0;
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char *linebuf = NULL;
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int linebufsz = 0;
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while ((ch = getc(file)) != EOF) {
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/* grow the line buffer as necessary */
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if (idx >= linebufsz) {
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linebufsz += 80;
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linebuf = xrealloc(linebuf, linebufsz);
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}
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linebuf[idx++] = (char) ch;
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if (!ch || (end && ch == '\n'))
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break;
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}
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if (end)
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*end = idx;
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if (linebuf) {
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// huh, does fgets discard prior data on error like this?
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// I don't think so....
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//if (ferror(file)) {
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// free(linebuf);
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// return NULL;
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//}
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linebuf = xrealloc(linebuf, idx+1);
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linebuf[idx] = '\0';
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}
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return linebuf;
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}
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/* Get line, including trailing \n if any */
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char *xmalloc_fgets(FILE *file)
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{
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int i;
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return bb_get_chunk_from_file(file, &i);
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}
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/* Get line. Remove trailing \n */
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char *xmalloc_getline(FILE *file)
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{
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int i;
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char *c = bb_get_chunk_from_file(file, &i);
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if (i && c[--i] == '\n')
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c[i] = '\0';
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return c;
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}
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