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authorUlrich Drepper <drepper@redhat.com>1998-03-08 15:26:29 +0000
committerUlrich Drepper <drepper@redhat.com>1998-03-08 15:26:29 +0000
commit3db52d94e2dcd03925664df6a09e9676ad1f2baf (patch)
treec52e151c8bbe577afba5c1e6a0a084641853ce7f /posix
parenta78de796b7911443b7af40177ee9c33cf69a82e5 (diff)
downloadglibc-3db52d94e2dcd03925664df6a09e9676ad1f2baf.zip
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Update.
1998-03-08 14:58 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (nisobjdir): Set to path to nis directory. (rpath-link): Add nisobjdir. Patch by Sven Verdoolaege <skimo@kotnet.org>. * elf/Makefile: Pretty print. * elf/dl-lookup.c: Include unistd.h. * elf/dl-runtime.c: Likewise. * localedata/Makefile (test-srcs): Add tst-rpmatch. (distribute): Add tst-rpmatch.sh. (tests): Add tst-rpmatch to dependency list and run tst-rpmatch.sh. New tests for rpmatch function by Jochen Hein <jochen.hein@delphi.central.de>. * localedata/tst-rpmatch.c: New file. * localedata/tst-rpmatch.sh: New file. * localedata/locales/de_DE: Correct yesexpr and noexpr. * localedata/locales/de_AT: Likewise. * posix/getopt.c: Update contact address. * posix/getopt1.c: Pretty print. * sysdeps/generic/libc-start.c: Do most of the initialization now here instead of in start.S. * sysdeps/unix/sysv/linux/libc-start.c: Likewise. * sysdeps/i386/elf/start.S: Remove most of the initialization code. * sysdeps/unix/sysv/linux/i386/profil-counter.h: No need for profil_counter to be public. 1998-03-08 13:06 Tim Waugh <tim@cyberelk.demon.co.uk> * posix/wordexp.c (parse_arith): Now works for negative numbers too. (parse_param): Coded parameter length expansion (${#var}). (parse_param): Handling for "=", "+", "-", and the ":" versions added. (parse_param): Cleaned up (fixed) error handling. * posix/wordexp-test.c: IFS now includes non-whitespace character (comma). Added more tests.
Diffstat (limited to 'posix')
-rw-r--r--posix/getopt.c14
-rw-r--r--posix/getopt1.c7
-rw-r--r--posix/wordexp-test.c49
-rw-r--r--posix/wordexp.c252
4 files changed, 252 insertions, 70 deletions
diff --git a/posix/getopt.c b/posix/getopt.c
index 3199925..7afe6c4 100644
--- a/posix/getopt.c
+++ b/posix/getopt.c
@@ -1,9 +1,9 @@
/* Getopt for GNU.
NOTE: getopt is now part of the C library, so if you don't know what
- "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
+ "Keep this file name-space clean" means, talk to drepper@gnu.org
before changing it!
- Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97
+ Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
@@ -31,7 +31,7 @@
#include <config.h>
#endif
-#if !defined (__STDC__) || !__STDC__
+#if !defined __STDC__ || !__STDC__
/* This is a separate conditional since some stdc systems
reject `defined (const)'. */
#ifndef const
@@ -50,7 +50,7 @@
it is simpler to just do this in the source for each such file. */
#define GETOPT_INTERFACE_VERSION 2
-#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
#include <gnu-versions.h>
#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
#define ELIDE_CODE
@@ -222,7 +222,7 @@ my_index (str, chr)
#ifdef __GNUC__
/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
That was relevant to code that was here before. */
-#if !defined (__STDC__) || !__STDC__
+#if !defined __STDC__ || !__STDC__
/* gcc with -traditional declares the built-in strlen to return int,
and has done so at least since version 2.4.5. -- rms. */
extern int strlen (const char *);
@@ -289,7 +289,7 @@ text_set_element (__libc_subinit, store_args_and_env);
`first_nonopt' and `last_nonopt' are relocated so that they describe
the new indices of the non-options in ARGV after they are moved. */
-#if defined (__STDC__) && __STDC__
+#if defined __STDC__ && __STDC__
static void exchange (char **);
#endif
@@ -375,7 +375,7 @@ exchange (argv)
/* Initialize the internal data when the first call is made. */
-#if defined (__STDC__) && __STDC__
+#if defined __STDC__ && __STDC__
static const char *_getopt_initialize (int, char *const *, const char *);
#endif
static const char *
diff --git a/posix/getopt1.c b/posix/getopt1.c
index 4aa8de6..3d264f2 100644
--- a/posix/getopt1.c
+++ b/posix/getopt1.c
@@ -1,5 +1,6 @@
/* getopt_long and getopt_long_only entry points for GNU getopt.
- Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
+ Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -23,7 +24,7 @@
#include "getopt.h"
-#if !defined (__STDC__) || !__STDC__
+#if !defined __STDC__ || !__STDC__
/* This is a separate conditional since some stdc systems
reject `defined (const)'. */
#ifndef const
@@ -42,7 +43,7 @@
it is simpler to just do this in the source for each such file. */
#define GETOPT_INTERFACE_VERSION 2
-#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
#include <gnu-versions.h>
#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
#define ELIDE_CODE
diff --git a/posix/wordexp-test.c b/posix/wordexp-test.c
index 604e685..75cfe5f 100644
--- a/posix/wordexp-test.c
+++ b/posix/wordexp-test.c
@@ -21,6 +21,8 @@
#include <stdlib.h>
#include <wordexp.h>
+#define IFS ", \n\t"
+
struct test_case_struct
{
int retval;
@@ -31,12 +33,57 @@ struct test_case_struct
const char *wordv[10];
} test_case[] =
{
+ /* Simple word-splitting */
{ 0, NULL, "one", 0, 1, { "one", } },
{ 0, NULL, "one two", 0, 2, { "one", "two", } },
{ 0, NULL, "one two three", 0, 3, { "one", "two", "three", } },
+
+ /* Simple parameter expansion */
{ 0, "foo", "${var}", 0, 1, { "foo", } },
{ 0, "foo", "$var", 0, 1, { "foo", } },
+
+ /* Simple quote removal */
{ 0, NULL, "\"quoted\"", 0, 1, { "quoted", } },
+ { 0, "foo", "\"$var\"\"$var\"", 0, 1, { "foofoo", } },
+ { 0, NULL, "'singly-quoted'", 0, 1, { "singly-quoted", } },
+
+ /* Simple command substitution */
+ { 0, NULL, "$(echo hello)", 0, 1, { "hello", } },
+ { 0, NULL, "$( (echo hello) )", 0, 1, { "hello", } },
+
+ /* Simple arithmetic expansion */
+ { 0, NULL, "$((1 + 1))", 0, 1, { "2", } },
+ { 0, NULL, "$((2-3))", 0, 1, { "-1", } },
+ { 0, NULL, "$((-1))", 0, 1, { "-1", } },
+
+ /* Field splitting */
+ { 0, NULL, " \tfoo\t\tbar ", 0, 2, { "foo", "bar", } },
+ { 0, NULL, " red , white blue", 0, 3, { "red", "white", "blue", } },
+
+ /* Advanced parameter expansion */
+ { 0, NULL, "${var:-bar}", 0, 1, { "bar", } },
+ { 0, NULL, "${var-bar}", 0, 1, { "bar", } },
+ { 0, "", "${var:-bar}", 0, 1, { "bar", } },
+ { 0, "foo", "${var:-bar}", 0, 1, { "foo", } },
+ { 0, "", "${var-bar}", 0, 0, { NULL, } },
+ { 0, NULL, "${var:=bar}", 0, 1, { "bar", } },
+ { 0, NULL, "${var=bar}", 0, 1, { "bar", } },
+ { 0, "", "${var:=bar}", 0, 1, { "bar", } },
+ { 0, "foo", "${var:=bar}", 0, 1, { "foo", } },
+ { 0, "", "${var=bar}", 0, 0, { NULL, } },
+ { 0, "foo", "${var:?bar}", 0, 1, { "foo", } },
+ { 0, NULL, "${var:+bar}", 0, 0, { NULL, } },
+ { 0, NULL, "${var+bar}", 0, 0, { NULL, } },
+ { 0, "", "${var:+bar}", 0, 0, { NULL, } },
+ { 0, "foo", "${var:+bar}", 0, 1, { "bar", } },
+ { 0, "", "${var+bar}", 0, 1, { "bar", } },
+ { 0, "12345", "${#var}", 0, 1, { "5", } },
+
+ { 0, "banana", "${var%na*}", 0, 1, { "bana", } },
+ { 0, "banana", "${var%%na*}", 0, 1, { "ba", } },
+ { 0, "borabora-island", "${var#*bora}", 0, 1, { "bora-island", } },
+ { 0, "borabora-island", "${var##*bora}", 0, 1, {"-island", } },
+
{ -1, NULL, NULL, 0, 0, { NULL, } },
};
@@ -49,7 +96,7 @@ main (int argc, char * argv[])
int test;
int fail = 0;
- setenv ("IFS", " \t\n", 1);
+ setenv ("IFS", IFS, 1);
for (test = 0; test_case[test].retval != -1; test++)
if (testit (&test_case[test]))
++fail;
diff --git a/posix/wordexp.c b/posix/wordexp.c
index abd55a5..3bc22b5 100644
--- a/posix/wordexp.c
+++ b/posix/wordexp.c
@@ -59,7 +59,7 @@ static int parse_backtick (char **word, size_t *word_length,
size_t *offset, int flags, wordexp_t *pwordexp,
const char *ifs, const char *ifs_white)
internal_function;
-static int eval_expr (char *expr, int *result) internal_function;
+static int eval_expr (char *expr, long int *result) internal_function;
/* The w_*() functions manipulate word lists. */
@@ -93,16 +93,12 @@ w_addchar (char *buffer, size_t *actlen, size_t *maxlen, char ch)
}
static char *
-w_addstr (char *buffer, size_t *actlen, size_t *maxlen, const char *str)
- /* (lengths exclude trailing zero) */
+internal_function
+w_addmem (char *buffer, size_t *actlen, size_t *maxlen, const char *str,
+ size_t len)
{
/* Add a string to the buffer, allocating room for it if needed.
*/
- size_t len;
-
- assert (str != NULL); /* w_addstr only called from this file */
- len = strlen (str);
-
if (*actlen + len > *maxlen)
{
char *old_buffer = buffer;
@@ -123,7 +119,24 @@ w_addstr (char *buffer, size_t *actlen, size_t *maxlen, const char *str)
return buffer;
}
+
+static char *
+internal_function
+w_addstr (char *buffer, size_t *actlen, size_t *maxlen, const char *str)
+ /* (lengths exclude trailing zero) */
+{
+ /* Add a string to the buffer, allocating room for it if needed.
+ */
+ size_t len;
+
+ assert (str != NULL); /* w_addstr only called from this file */
+ len = strlen (str);
+
+ return w_addmem (buffer, actlen, maxlen, str, len);
+}
+
static int
+internal_function
w_addword (wordexp_t *pwordexp, char *word)
{
/* Add a word to the wordlist */
@@ -229,8 +242,8 @@ parse_tilde (char **word, size_t *word_length, size_t *max_length,
{
if (!((*word)[*word_length - 1] == '=' && wordc == 0))
{
- if (!((*word)[*word_length - 1] == ':' &&
- strchr (*word, '=') && wordc == 0))
+ if (!((*word)[*word_length - 1] == ':'
+ && strchr (*word, '=') && wordc == 0))
{
*word = w_addchar (*word, word_length, max_length, '~');
return *word ? 0 : WRDE_NOSPACE;
@@ -422,6 +435,7 @@ no_space:
}
static int
+internal_function
parse_squote (char **word, size_t *word_length, size_t *max_length,
const char *words, size_t *offset)
{
@@ -444,7 +458,7 @@ parse_squote (char **word, size_t *word_length, size_t *max_length,
/* Functions to evaluate an arithmetic expression */
static int
internal_function
-eval_expr_val (char **expr, int *result)
+eval_expr_val (char **expr, long int *result)
{
int sgn = +1;
char *digit;
@@ -495,12 +509,12 @@ eval_expr_val (char **expr, int *result)
static int
internal_function
-eval_expr_multdiv (char **expr, int *result)
+eval_expr_multdiv (char **expr, long int *result)
{
- int arg;
+ long int arg;
/* Read a Value */
- if (eval_expr_val (expr, result))
+ if (eval_expr_val (expr, result) != 0)
return WRDE_SYNTAX;
while (**expr)
@@ -510,16 +524,16 @@ eval_expr_multdiv (char **expr, int *result)
if (**expr == '*')
{
- (*expr)++;
- if ((eval_expr_val (expr, &arg)) != 0)
+ ++(*expr);
+ if (eval_expr_val (expr, &arg) != 0)
return WRDE_SYNTAX;
*result *= arg;
}
else if (**expr == '/')
{
- (*expr)++;
- if ((eval_expr_val (expr, &arg)) != 0)
+ ++(*expr);
+ if (eval_expr_val (expr, &arg) != 0)
return WRDE_SYNTAX;
*result /= arg;
@@ -532,12 +546,12 @@ eval_expr_multdiv (char **expr, int *result)
static int
internal_function
-eval_expr (char *expr, int *result)
+eval_expr (char *expr, long int *result)
{
- int arg;
+ long int arg;
/* Read a Multdiv */
- if ((eval_expr_multdiv (&expr, result)) != 0)
+ if (eval_expr_multdiv (&expr, result) != 0)
return WRDE_SYNTAX;
while (*expr)
@@ -547,16 +561,16 @@ eval_expr (char *expr, int *result)
if (*expr == '+')
{
- expr++;
- if ((eval_expr_multdiv (&expr, &arg)) != 0)
+ ++expr;
+ if (eval_expr_multdiv (&expr, &arg) != 0)
return WRDE_SYNTAX;
*result += arg;
}
else if (*expr == '-')
{
- expr++;
- if ((eval_expr_multdiv (&expr, &arg)) != 0)
+ ++expr;
+ if (eval_expr_multdiv (&expr, &arg) != 0)
return WRDE_SYNTAX;
*result -= arg;
@@ -628,7 +642,8 @@ parse_arith (char **word, size_t *word_length, size_t *max_length,
if (--paren_depth == 0)
{
char result[21]; /* 21 = ceil(log10(2^64)) + 1 */
- int numresult = 0;
+ long int numresult = 0;
+ long long int convertme;
if (bracket || words[1 + *offset] != ')')
return WRDE_SYNTAX;
@@ -636,13 +651,25 @@ parse_arith (char **word, size_t *word_length, size_t *max_length,
++(*offset);
/* Go - evaluate. */
- if (*expr &&
- eval_expr (expr, &numresult) != 0)
+ if (*expr && eval_expr (expr, &numresult) != 0)
return WRDE_SYNTAX;
+ if (numresult < 0)
+ {
+ convertme = -numresult;
+ *word = w_addchar (*word, word_length, max_length, '-');
+ if (!*word)
+ {
+ free (expr);
+ return WRDE_NOSPACE;
+ }
+ }
+ else
+ convertme = numresult;
+
result[20] = '\0';
*word = w_addstr (*word, word_length, max_length,
- _itoa_word (numresult, &result[20], 10, 0));
+ _itoa (convertme, &result[20], 10, 0));
free (expr);
return *word ? 0 : WRDE_NOSPACE;
}
@@ -656,7 +683,7 @@ parse_arith (char **word, size_t *word_length, size_t *max_length,
if (bracket && paren_depth == 1)
{
char result[21]; /* 21 = ceil(log10(2^64)) + 1 */
- int numresult = 0;
+ long int numresult = 0;
/* Go - evaluate. */
if (*expr && eval_expr (expr, &numresult) != 0)
@@ -758,14 +785,11 @@ exec_comm (char *comm, char **word, size_t *word_length, size_t *max_length,
break;
}
- for (i = 0; i < buflen; ++i)
+ *word = w_addmem (*word, word_length, max_length, buffer, buflen);
+ if (*word == NULL)
{
- *word = w_addchar (*word, word_length, max_length, buffer[i]);
- if (*word == NULL)
- {
- close (fildes[0]);
- return WRDE_NOSPACE;
- }
+ close (fildes[0]);
+ return WRDE_NOSPACE;
}
}
@@ -874,6 +898,7 @@ exec_comm (char *comm, char **word, size_t *word_length, size_t *max_length,
}
static int
+internal_function
parse_comm (char **word, size_t *word_length, size_t *max_length,
const char *words, size_t *offset, int flags, wordexp_t *pwordexp,
const char *ifs, const char *ifs_white)
@@ -949,6 +974,7 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
enum remove_pattern_enum remove = RP_NONE;
int colon_seen = 0;
int depth = 0;
+ int substitute_length = 0;
int error;
for (; words[*offset]; ++(*offset))
@@ -997,11 +1023,7 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
goto envsubst;
case '#':
- /* At the start? (ie. 'string length') */
- if (*offset == start + 1)
- /* FIXME: This isn't written yet! */
- break;
-
+ /* '#' only has special meaning inside braces */
if (words[start] != '{')
{
/* Evaluate */
@@ -1010,8 +1032,16 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
goto envsubst;
}
- /* Separating variable name from prefix pattern? */
+ /* At the start? (i.e. 'string length') */
+ if (*offset == start + 1)
+ {
+ substitute_length = 1;
+ break;
+ }
+ else if (substitute_length)
+ goto syntax;
+ /* Separating variable name from prefix pattern? */
if (remove == RP_NONE)
{
remove = RP_SHORT_LEFT;
@@ -1069,8 +1099,8 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
break;
}
- if ((words[1 + *offset] == '-') || (words[1 + *offset] == '=') ||
- (words[1 + *offset] == '?') || (words[1 + *offset] == '+'))
+ if ((words[1 + *offset] == '-') || (words[1 + *offset] == '=')
+ || (words[1 + *offset] == '?') || (words[1 + *offset] == '+'))
{
colon_seen = 1;
break;
@@ -1085,6 +1115,9 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
if (!*env)
goto syntax;
+ if (substitute_length)
+ goto syntax;
+
if (action != '\0' || remove != RP_NONE)
{
pattern = w_addchar (pattern, &pat_length, &pat_maxlen,
@@ -1184,7 +1217,7 @@ envsubst:
switch (remove)
{
case RP_SHORT_LEFT:
- for (p = value; p <= end; p++)
+ for (p = value; p <= end; ++p)
{
c = *p;
*p = '\0';
@@ -1200,7 +1233,7 @@ envsubst:
break;
case RP_LONG_LEFT:
- for (p = end; p >= value; p--)
+ for (p = end; p >= value; --p)
{
c = *p;
*p = '\0';
@@ -1216,7 +1249,7 @@ envsubst:
break;
case RP_SHORT_RIGHT:
- for (p = end; p >= value; p--)
+ for (p = end; p >= value; --p)
{
if (fnmatch (pattern, p, 0) != FNM_NOMATCH)
{
@@ -1228,7 +1261,7 @@ envsubst:
break;
case RP_LONG_RIGHT:
- for (p = value; p <= end; p++)
+ for (p = value; p <= end; ++p)
{
if (fnmatch (pattern, p, 0) != FNM_NOMATCH)
{
@@ -1248,6 +1281,7 @@ envsubst:
case '?':
if (value && *value)
+ /* Substitute parameter */
break;
if (!colon_seen && value)
@@ -1292,8 +1326,94 @@ envsubst:
free (pattern);
return WRDE_BADVAL;
+ case '-':
+ if (value && *value)
+ /* Substitute parameter */
+ break;
+
+ if (!colon_seen && value)
+ {
+ /* Substitute NULL */
+ free (env);
+ free (pattern);
+ return 0;
+ }
+
+ subst_word:
+ {
+ /* Substitute word */
+ wordexp_t we;
+ char *expand_me = pattern;
+ int i;
+
+ if (pwordexp == NULL)
+ {
+ /* No field-splitting is allowed, so imagine
+ quotes around the word. */
+ expand_me = alloca (strlen (pattern) + 2);
+ sprintf (expand_me, "\"%s\"", pattern);
+ }
+
+ error = wordexp (expand_me, &we, flags);
+ if (error)
+ {
+ free (env);
+ free (pattern);
+ return error;
+ }
+
+ /* Fingers crossed that the quotes worked.. */
+ assert (pwordexp || we.we_wordc == 1);
+
+ /* Substitute */
+ for (i = 0; i < we.we_wordc; i++)
+ if (w_addword (pwordexp, __strdup(we.we_wordv[i]))
+ == WRDE_NOSPACE)
+ break;
+
+ if (action == '=')
+ /* Also assign */
+ setenv (env, we.we_wordv[0], 1); /* need to strdup? */
+
+ wordfree (&we);
+
+ if (i < we.we_wordc)
+ /* Ran out of space */
+ goto no_space;
+
+ return 0;
+ }
+
+ case '+':
+ if (value && *value)
+ goto subst_word;
+
+ if (!colon_seen && value)
+ goto subst_word;
+
+ /* Substitute NULL */
+ free (env);
+ free (pattern);
+ return 0;
+
+ case '=':
+ if (value && *value)
+ /* Substitute parameter */
+ break;
+
+ if (!colon_seen && value)
+ {
+ /* Substitute NULL */
+ free (env);
+ free (pattern);
+ return 0;
+ }
+
+ /* This checks for '=' so it knows to assign */
+ goto subst_word;
+
default:
- printf ("warning: parameter substitution does not yet support \"%s%c\"\n", colon_seen?":":"", action);
+ assert (! "Unrecognised action!");
}
}
@@ -1309,9 +1429,22 @@ envsubst:
return 0;
}
+ if (substitute_length)
+ {
+ char param_length[21];
+ param_length[20] = '\0';
+ *word = w_addstr (*word, word_length, max_length,
+ _itoa_word (strlen (value), &param_length[20], 10, 0));
+ return *word ? 0 : WRDE_NOSPACE;
+ }
+
+
if (pwordexp == NULL)
- /* Quoted - no field split */
- *word = w_addstr (*word, word_length, max_length, value);
+ {
+ /* Quoted - no field split */
+ *word = w_addstr (*word, word_length, max_length, value);
+ return *word ? 0 : WRDE_NOSPACE;
+ }
else
{
/* Need to field-split */
@@ -1331,7 +1464,7 @@ envsubst:
if (!seen_nonws_ifs && *field_begin == 0)
/* Nothing but whitespace */
- return 0;
+ break;
/* Search for the end of the field */
field_end = field_begin;
@@ -1358,22 +1491,23 @@ envsubst:
*field_end = 0;
field = __strdup (field_begin);
if (field == NULL)
- goto no_space;
+ return WRDE_NOSPACE;
/* Tag the field onto the word list */
if (w_addword (pwordexp, field) == WRDE_NOSPACE)
- return WRDE_NOSPACE;
+ {
+ free (field);
+ return WRDE_NOSPACE;
+ }
*word = NULL;
*word_length = *max_length = 0;
field_begin = next_field;
} while (seen_nonws_ifs || (field_begin && *field_begin));
-
- return 0;
}
- return *word ? 0 : WRDE_NOSPACE;
+ return 0;
no_space:
if (env)
@@ -1658,7 +1792,7 @@ wordexp (const char *words, wordexp_t *pwordexp, int flags)
*whch++ = *ifsch;
}
- ifsch++;
+ ++ifsch;
}
*whch = '\0';
}