mirror of
https://github.com/sheumann/hush.git
synced 2024-08-16 09:29:16 +00:00
function old new delta lsattr_main 62 143 +81 open_or_warn_stdin - 36 +36 fclose_if_not_stdin 20 47 +27 xfopen_stdin - 20 +20 tac_main 336 356 +20 cksum_main 249 259 +10 bb_argv_dash - 8 +8 su_main 448 455 +7 cmp_main 630 633 +3 passwd_main 1072 1074 +2 uudecode_main 317 315 -2 text_yank 110 108 -2 handle_incoming_and_exit 2653 2651 -2 flags 5 1 -4 write_leases 235 230 -5 fopen_or_warn_stdin 48 42 -6 fold_main 648 642 -6 static.argv_dash 8 - -8 sum_main 142 128 -14 tail_main 1237 1221 -16 sed_main 711 695 -16 cmp_xfopen_input 17 - -17 bb_cat 113 96 -17 catv_main 328 306 -22 strings_main 457 434 -23 hash_file 298 274 -24 sum_file 353 325 -28 sort_main 904 859 -45 expand_main 736 686 -50 cut_main 1116 1065 -51 md5_sha1_sum_main 549 493 -56 lsattr_args 90 - -90 read_stduu 408 255 -153 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 7/20 up/down: 214/-657) Total: -443 bytes text data bss dec hex filename 797417 658 7428 805503 c4a7f busybox_old 796973 658 7428 805059 c48c3 busybox_unstripped
201 lines
4.5 KiB
C
201 lines
4.5 KiB
C
/* expand - convert tabs to spaces
|
|
* unexpand - convert spaces to tabs
|
|
*
|
|
* Copyright (C) 89, 91, 1995-2006 Free Software Foundation, Inc.
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*
|
|
* David MacKenzie <djm@gnu.ai.mit.edu>
|
|
*
|
|
* Options for expand:
|
|
* -t num --tabs=NUM Convert tabs to num spaces (default 8 spaces).
|
|
* -i --initial Only convert initial tabs on each line to spaces.
|
|
*
|
|
* Options for unexpand:
|
|
* -a --all Convert all blanks, instead of just initial blanks.
|
|
* -f --first-only Convert only leading sequences of blanks (default).
|
|
* -t num --tabs=NUM Have tabs num characters apart instead of 8.
|
|
*
|
|
* Busybox version (C) 2007 by Tito Ragusa <farmatito@tiscali.it>
|
|
*
|
|
* Caveat: this versions of expand and unexpand don't accept tab lists.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
enum {
|
|
OPT_INITIAL = 1 << 0,
|
|
OPT_TABS = 1 << 1,
|
|
OPT_ALL = 1 << 2,
|
|
};
|
|
|
|
static void xputchar(char c)
|
|
{
|
|
if (putchar(c) < 0)
|
|
bb_error_msg_and_die(bb_msg_write_error);
|
|
}
|
|
|
|
#if ENABLE_EXPAND
|
|
static void expand(FILE *file, unsigned tab_size, unsigned opt)
|
|
{
|
|
char *line;
|
|
char *ptr;
|
|
int convert;
|
|
int pos;
|
|
|
|
/* Increment tab_size by 1 locally.*/
|
|
tab_size++;
|
|
|
|
while ((line = xmalloc_fgets(file)) != NULL) {
|
|
convert = 1;
|
|
pos = 0;
|
|
ptr = line;
|
|
while (*line) {
|
|
pos++;
|
|
if (*line == '\t' && convert) {
|
|
for (; pos < tab_size; pos++) {
|
|
xputchar(' ');
|
|
}
|
|
} else {
|
|
if ((opt & OPT_INITIAL) && !isblank(*line)) {
|
|
convert = 0;
|
|
}
|
|
xputchar(*line);
|
|
}
|
|
if (pos == tab_size) {
|
|
pos = 0;
|
|
}
|
|
line++;
|
|
}
|
|
free(ptr);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_UNEXPAND
|
|
static void unexpand(FILE *file, unsigned int tab_size, unsigned opt)
|
|
{
|
|
char *line;
|
|
char *ptr;
|
|
int convert;
|
|
int pos;
|
|
int i = 0;
|
|
int column = 0;
|
|
|
|
while ((line = xmalloc_fgets(file)) != NULL) {
|
|
convert = 1;
|
|
pos = 0;
|
|
ptr = line;
|
|
while (*line) {
|
|
while ((*line == ' ' || *line == '\t') && convert) {
|
|
pos += (*line == ' ') ? 1 : tab_size;
|
|
line++;
|
|
column++;
|
|
if ((opt & OPT_ALL) && column == tab_size) {
|
|
column = 0;
|
|
goto put_tab;
|
|
}
|
|
}
|
|
if (pos) {
|
|
i = pos / tab_size;
|
|
if (i) {
|
|
for (; i > 0; i--) {
|
|
put_tab:
|
|
xputchar('\t');
|
|
}
|
|
} else {
|
|
for (i = pos % tab_size; i > 0; i--) {
|
|
xputchar(' ');
|
|
}
|
|
}
|
|
pos = 0;
|
|
} else {
|
|
if (opt & OPT_INITIAL) {
|
|
convert = 0;
|
|
}
|
|
if (opt & OPT_ALL) {
|
|
column++;
|
|
}
|
|
xputchar(*line);
|
|
line++;
|
|
}
|
|
}
|
|
free(ptr);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
int expand_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int expand_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
|
{
|
|
/* Default 8 spaces for 1 tab */
|
|
const char *opt_t = "8";
|
|
FILE *file;
|
|
unsigned tab_size;
|
|
unsigned opt;
|
|
int exit_status = EXIT_SUCCESS;
|
|
|
|
#if ENABLE_FEATURE_EXPAND_LONG_OPTIONS
|
|
static const char expand_longopts[] ALIGN1 =
|
|
/* name, has_arg, val */
|
|
"initial\0" No_argument "i"
|
|
"tabs\0" Required_argument "t"
|
|
;
|
|
#endif
|
|
#if ENABLE_FEATURE_UNEXPAND_LONG_OPTIONS
|
|
static const char unexpand_longopts[] ALIGN1 =
|
|
/* name, has_arg, val */
|
|
"first-only\0" No_argument "i"
|
|
"tabs\0" Required_argument "t"
|
|
"all\0" No_argument "a"
|
|
;
|
|
#endif
|
|
|
|
if (ENABLE_EXPAND && (!ENABLE_UNEXPAND || applet_name[0] == 'e')) {
|
|
USE_FEATURE_EXPAND_LONG_OPTIONS(applet_long_options = expand_longopts);
|
|
opt = getopt32(argv, "it:", &opt_t);
|
|
} else {
|
|
USE_FEATURE_UNEXPAND_LONG_OPTIONS(applet_long_options = unexpand_longopts);
|
|
/* -t NUM sets also -a */
|
|
opt_complementary = "ta";
|
|
opt = getopt32(argv, "ft:a", &opt_t);
|
|
/* -f --first-only is the default */
|
|
if (!(opt & OPT_ALL)) opt |= OPT_INITIAL;
|
|
}
|
|
tab_size = xatou_range(opt_t, 1, UINT_MAX);
|
|
|
|
argv += optind;
|
|
|
|
if (!*argv) {
|
|
*--argv = (char*)bb_msg_standard_input;
|
|
}
|
|
do {
|
|
file = fopen_or_warn_stdin(*argv);
|
|
if (!file) {
|
|
exit_status = EXIT_FAILURE;
|
|
continue;
|
|
}
|
|
|
|
if (ENABLE_EXPAND && (!ENABLE_UNEXPAND || applet_name[0] == 'e'))
|
|
USE_EXPAND(expand(file, tab_size, opt));
|
|
else
|
|
USE_UNEXPAND(unexpand(file, tab_size, opt));
|
|
|
|
/* Check and close the file */
|
|
if (fclose_if_not_stdin(file)) {
|
|
bb_simple_perror_msg(*argv);
|
|
exit_status = EXIT_FAILURE;
|
|
}
|
|
/* If stdin also clear EOF */
|
|
if (file == stdin)
|
|
clearerr(file);
|
|
} while (*++argv);
|
|
|
|
/* Now close stdin also */
|
|
/* (if we didn't read from it, it's a no-op) */
|
|
if (fclose(stdin))
|
|
bb_perror_msg_and_die(bb_msg_standard_input);
|
|
|
|
fflush_stdout_and_exit(exit_status);
|
|
}
|