help
Support long options for the env applet.
+config EXPAND
+ bool "expand"
+ default n
+ help
+ By default, convert all tabs to spaces.
+
+config FEATURE_EXPAND_LONG_OPTIONS
+ bool "Enable long options"
+ default n
+ depends on EXPAND && GETOPT_LONG
+ help
+ Support long options for the expand applet.
+
config EXPR
bool "expr"
default n
help
uname is used to print system information.
+config UNEXPAND
+ bool "unexpand"
+ default n
+ help
+ By default, convert only leading sequences of blanks to tabs.
+
+config FEATURE_UNEXPAND_LONG_OPTIONS
+ bool "Enable long options"
+ default n
+ depends on UNEXPAND && GETOPT_LONG
+ help
+ Support long options for the unexpand applet.
+
config UNIQ
bool "uniq"
default n
lib-$(CONFIG_ASH) += echo.o # used by ash
lib-$(CONFIG_ENV) += env.o
lib-$(CONFIG_EXPR) += expr.o
+lib-$(CONFIG_EXPAND) += expand.o
lib-$(CONFIG_FALSE) += false.o
lib-$(CONFIG_FOLD) += fold.o
lib-$(CONFIG_HEAD) += head.o
lib-$(CONFIG_TRUE) += true.o
lib-$(CONFIG_TTY) += tty.o
lib-$(CONFIG_UNAME) += uname.o
+lib-$(CONFIG_UNEXPAND) += expand.o
lib-$(CONFIG_UNIQ) += uniq.o
lib-$(CONFIG_USLEEP) += usleep.o
lib-$(CONFIG_UUDECODE) += uudecode.o
--- /dev/null
+/* 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);
+int expand_main(int argc, 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(argc, argv, "it:", &opt_t);
+ } else if (ENABLE_UNEXPAND) {
+ USE_FEATURE_UNEXPAND_LONG_OPTIONS(applet_long_options = unexpand_longopts);
+ /* -t NUM sets also -a */
+ opt_complementary = "ta";
+ opt = getopt32(argc, 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 no args are given, read from stdin */
+ if (!*argv) {
+ *--argv = (char*)bb_msg_standard_input;
+ goto use_stdin;
+ }
+
+ do {
+ if (NOT_LONE_CHAR(*argv, '-')) {
+ file = fopen_or_warn(*argv, "r");
+ if (!file) {
+ exit_status = EXIT_FAILURE;
+ continue;
+ }
+ } else {
+ use_stdin:
+ file = stdin;
+ }
+
+ if (ENABLE_EXPAND && (!ENABLE_UNEXPAND || applet_name[0] == 'e'))
+ USE_EXPAND(expand(file, tab_size, opt));
+ else if (ENABLE_UNEXPAND)
+ USE_UNEXPAND(unexpand(file, tab_size, opt));
+
+ /* Check and close the file */
+ /* We do want all of them to execute, thus | instead of || */
+ if (ferror(file) | fclose_if_not_stdin(file)) {
+ bb_perror_msg("%s", *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);
+}
fflush_stdout_and_exit(null(v));
}
-
-
USE_ENVDIR(APPLET_ODDNAME(envdir, chpst, _BB_DIR_USR_BIN, _BB_SUID_NEVER, envdir))
USE_ENVUIDGID(APPLET_ODDNAME(envuidgid, chpst, _BB_DIR_USR_BIN, _BB_SUID_NEVER, envuidgid))
USE_ETHER_WAKE(APPLET_ODDNAME(ether-wake, ether_wake, _BB_DIR_USR_BIN, _BB_SUID_NEVER, ether_wake))
+USE_EXPAND(APPLET(expand, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_EXPR(APPLET(expr, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_FAKEIDENTD(APPLET(fakeidentd, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_FALSE(APPLET_NOFORK(false, false, _BB_DIR_BIN, _BB_SUID_NEVER, false))
USE_UMOUNT(APPLET(umount, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_UNAME(APPLET(uname, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_UNCOMPRESS(APPLET(uncompress, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_UNEXPAND(APPLET_ODDNAME(unexpand, expand, _BB_DIR_USR_BIN, _BB_SUID_NEVER, unexpand))
USE_UNIQ(APPLET(uniq, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_UNIX2DOS(APPLET_ODDNAME(unix2dos, dos2unix, _BB_DIR_USR_BIN, _BB_SUID_NEVER, unix2dos))
USE_UNLZMA(APPLET(unlzma, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
" -i iface Use interface ifname instead of the default \"eth0\"\n" \
" -p pass Append the four or six byte password PW to the packet"
+#define expand_trivial_usage \
+ "[-i] [-t NUM] [FILE|-]"
+#define expand_full_usage \
+ "Convert tabs to spaces, writing to standard output." \
+ "\n\nOptions:" \
+ "\n -i" USE_FEATURE_EXPAND_LONG_OPTIONS(",--initial") \
+ " Do not convert tabs after non blanks" \
+ "\n -t" USE_FEATURE_EXPAND_LONG_OPTIONS(",--tabs=N") \
+ " Tabstops every N chars"
+
#define expr_trivial_usage \
"EXPRESSION"
#define expr_full_usage \
" -c Extract to stdout\n" \
" -f Force overwrite an existing file"
+#define unexpand_trivial_usage \
+ "[-f][-a][-t NUM] [FILE|-]"
+#define unexpand_full_usage \
+ "Convert spaces to tabs, writing to standard output." \
+ "\n\nOptions:" \
+ "\n -a" USE_FEATURE_UNEXPAND_LONG_OPTIONS(",--all") \
+ " Convert all blanks" \
+ "\n -f" USE_FEATURE_UNEXPAND_LONG_OPTIONS(",--first-only") \
+ " Convert only leading sequences of blanks" \
+ "\n -t" USE_FEATURE_UNEXPAND_LONG_OPTIONS(",--tabs=N") \
+ " Tabstops every N chars"
+
#define uniq_trivial_usage \
"[-fscdu]... [INPUT [OUTPUT]]"
#define uniq_full_usage \
void fflush_stdout_and_exit(int retval)
{
if (fflush(stdout))
- xfunc_die();
+ bb_perror_msg_and_die(bb_msg_standard_output);
if (ENABLE_FEATURE_PREFER_APPLETS && die_sleep < 0) {
/* We are in NOFORK applet. Do not exit() directly,
CONFIG_FEATURE_FANCY_ECHO=y
CONFIG_ENV=y
CONFIG_FEATURE_ENV_LONG_OPTIONS=y
+CONFIG_EXPAND=y
+CONFIG_FEATURE_EXPAND_LONG_OPTIONS=y
CONFIG_EXPR=y
CONFIG_EXPR_MATH_SUPPORT_64=y
CONFIG_FALSE=y
CONFIG_TRUE=y
CONFIG_TTY=y
CONFIG_UNAME=y
+CONFIG_UNEXPAND=y
+CONFIG_FEATURE_UNEXPAND_LONG_OPTIONS=y
CONFIG_UNIQ=y
CONFIG_USLEEP=y
CONFIG_UUDECODE=y
--- /dev/null
+rm -f foo bar
+echo -e "\ty" | expand -t 3 ../../busybox > foo
+echo -e "\ty" | busybox unexpand -t 3 ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
+rm -f foo bar
+echo -e "\ty\tx" | expand -it 3 ../../busybox > foo
+echo -e "\ty\tx" | busybox unexpand -it 3 ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
--- /dev/null
+rm -f foo bar
+echo " y" | unexpand ../../busybox > foo
+echo " y" | busybox unexpand ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
+rm -f foo bar
+echo " y" | unexpand ../../busybox > foo
+echo " y" | busybox unexpand ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
+echo " y y" | unexpand ../../busybox > foo
+echo " y y" | busybox unexpand ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
+rm -f foo bar
+echo " y y" | unexpand ../../busybox > foo
+echo " y y" | busybox unexpand ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
+echo " y y" | unexpand -a ../../busybox > foo
+echo " y y" | busybox unexpand -a ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
+rm -f foo bar
+echo " y y" | unexpand -a ../../busybox > foo
+echo " y y" | busybox unexpand -a ../../busybox > bar
+set +e
+test ! -f foo -a -f bar
+if [ $? = 0 ] ; then
+ set -e
+ diff -q foo bar
+fi
projects / oweals / busybox.git / commitdiff