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builtin.c
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builtin.c
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/*
* builtin.c - Builtin functions and various utility procedures.
*/
/*
* Copyright (C) 1986, 1988, 1989, 1991-2012 the Free Software Foundation, Inc.
*
* This file is part of GAWK, the GNU implementation of the
* AWK Programming Language.
*
* GAWK is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GAWK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "awk.h"
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#if defined(HAVE_LOCALE_H)
#include <locale.h>
#endif
#if defined(HAVE_FCNTL_H)
#include <fcntl.h>
#endif
#if defined(HAVE_MATH_H)
#include <math.h>
#endif
#include "random.h"
#include "floatmagic.h"
#if defined(HAVE_POPEN_H)
#include "popen.h"
#endif
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
/* The extra casts work around common compiler bugs. */
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
It is necessary at least when t == time_t. */
#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
#define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
#ifndef INTMAX_MIN
# define INTMAX_MIN TYPE_MINIMUM (intmax_t)
#endif
#ifndef UINTMAX_MAX
# define UINTMAX_MAX TYPE_MAXIMUM (uintmax_t)
#endif
#ifndef SIZE_MAX /* C99 constant, can't rely on it everywhere */
#define SIZE_MAX ((size_t) -1)
#endif
#define DEFAULT_G_PRECISION 6
static size_t mbc_byte_count(const char *ptr, size_t numchars);
static size_t mbc_char_count(const char *ptr, size_t numbytes);
/* Can declare these, since we always use the random shipped with gawk */
extern char *initstate(unsigned long seed, char *state, long n);
extern char *setstate(char *state);
extern long random(void);
extern void srandom(unsigned long seed);
extern NODE **args_array;
extern int max_args;
extern NODE **fields_arr;
extern int output_is_tty;
extern FILE *output_fp;
#define POP_TWO_SCALARS(s1, s2) \
s2 = POP_SCALAR(); \
s1 = POP(); \
if ((s1)->type == Node_var_array) \
DEREF(s2), fatal(_("attempt to use array `%s' in a scalar context"), array_vname(s1)), 0
/*
* Since we supply the version of random(), we know what
* value to use here.
*/
#define GAWK_RANDOM_MAX 0x7fffffffL
static void efwrite(const void *ptr, size_t size, size_t count, FILE *fp,
const char *from, struct redirect *rp, int flush);
/* efwrite --- like fwrite, but with error checking */
static void
efwrite(const void *ptr,
size_t size,
size_t count,
FILE *fp,
const char *from,
struct redirect *rp,
int flush)
{
errno = 0;
if (fwrite(ptr, size, count, fp) != count)
goto wrerror;
if (flush
&& ((fp == stdout && output_is_tty)
|| (rp != NULL && (rp->flag & RED_NOBUF)))) {
fflush(fp);
if (ferror(fp))
goto wrerror;
}
return;
wrerror:
fatal(_("%s to \"%s\" failed (%s)"), from,
rp ? rp->value : _("standard output"),
errno ? strerror(errno) : _("reason unknown"));
}
/* do_exp --- exponential function */
NODE *
do_exp(int nargs)
{
NODE *tmp;
double d, res;
tmp = POP_SCALAR();
if (do_lint && (tmp->flags & (NUMCUR|NUMBER)) == 0)
lintwarn(_("exp: received non-numeric argument"));
d = force_number(tmp);
DEREF(tmp);
errno = 0;
res = exp(d);
if (errno == ERANGE)
warning(_("exp: argument %g is out of range"), d);
return make_number((AWKNUM) res);
}
/* stdfile --- return fp for a standard file */
/*
* This function allows `fflush("/dev/stdout")' to work.
* The other files will be available via getredirect().
* /dev/stdin is not included, since fflush is only for output.
*/
static FILE *
stdfile(const char *name, size_t len)
{
if (len == 11) {
if (strncmp(name, "/dev/stderr", 11) == 0)
return stderr;
else if (strncmp(name, "/dev/stdout", 11) == 0)
return stdout;
}
return NULL;
}
/* do_fflush --- flush output, either named file or pipe or everything */
NODE *
do_fflush(int nargs)
{
struct redirect *rp;
NODE *tmp;
FILE *fp;
int status = 0;
const char *file;
/*
* November, 2012.
* It turns out that circa 2002, when BWK
* added fflush() and fflush("") to his awk, he made both of
* them flush everything.
*
* Now, with our inside agent getting ready to try to get fflush()
* standardized in POSIX, we are going to make our awk consistent
* with his. This should not really affect anyone, as flushing
* everything also flushes stdout.
*
* So. Once upon a time:
* fflush() --- flush stdout
* fflush("") --- flush everything
* Now, both calls flush everything.
*/
/* fflush() */
if (nargs == 0) {
status = flush_io();
return make_number((AWKNUM) status);
}
tmp = POP_STRING();
file = tmp->stptr;
/* fflush("") */
if (tmp->stlen == 0) {
status = flush_io();
DEREF(tmp);
return make_number((AWKNUM) status);
}
/* fflush("/some/path") */
rp = getredirect(tmp->stptr, tmp->stlen);
status = -1;
if (rp != NULL) {
if ((rp->flag & (RED_WRITE|RED_APPEND)) == 0) {
if (rp->flag & RED_PIPE)
warning(_("fflush: cannot flush: pipe `%s' opened for reading, not writing"),
file);
else
warning(_("fflush: cannot flush: file `%s' opened for reading, not writing"),
file);
DEREF(tmp);
return make_number((AWKNUM) status);
}
fp = rp->fp;
if (fp != NULL)
status = fflush(fp);
} else if ((fp = stdfile(tmp->stptr, tmp->stlen)) != NULL) {
status = fflush(fp);
} else {
status = -1;
warning(_("fflush: `%s' is not an open file, pipe or co-process"), file);
}
DEREF(tmp);
return make_number((AWKNUM) status);
}
#if MBS_SUPPORT
/* strncasecmpmbs --- like strncasecmp (multibyte string version) */
int
strncasecmpmbs(const unsigned char *s1, const unsigned char *s2, size_t n)
{
size_t i1, i2, mbclen1, mbclen2, gap;
wchar_t wc1, wc2;
mbstate_t mbs1, mbs2;
memset(& mbs1, 0, sizeof(mbs1));
memset(& mbs2, 0, sizeof(mbs2));
for (i1 = i2 = 0 ; i1 < n && i2 < n ;i1 += mbclen1, i2 += mbclen2) {
if (is_valid_character(s1[i1])) {
mbclen1 = 1;
wc1 = btowc_cache(s1[i1]);
} else {
mbclen1 = mbrtowc(& wc1, (const char *)s1 + i1,
n - i1, & mbs1);
if (mbclen1 == (size_t) -1 || mbclen1 == (size_t) -2 || mbclen1 == 0) {
/* We treat it as a singlebyte character. */
mbclen1 = 1;
wc1 = btowc_cache(s1[i1]);
}
}
if (is_valid_character(s2[i2])) {
mbclen2 = 1;
wc2 = btowc_cache(s2[i2]);
} else {
mbclen2 = mbrtowc(& wc2, (const char *)s2 + i2,
n - i2, & mbs2);
if (mbclen2 == (size_t) -1 || mbclen2 == (size_t) -2 || mbclen2 == 0) {
/* We treat it as a singlebyte character. */
mbclen2 = 1;
wc2 = btowc_cache(s2[i2]);
}
}
if ((gap = towlower(wc1) - towlower(wc2)) != 0)
/* s1 and s2 are not equivalent. */
return gap;
}
/* s1 and s2 are equivalent. */
return 0;
}
/* Inspect the buffer `src' and write the index of each byte to `dest'.
Caller must allocate `dest'.
e.g. str = <mb1(1)>, <mb1(2)>, a, b, <mb2(1)>, <mb2(2)>, <mb2(3)>, c
where mb(i) means the `i'-th byte of a multibyte character.
dest = 1, 2, 1, 1, 1, 2, 3. 1
*/
static void
index_multibyte_buffer(char* src, char* dest, int len)
{
int idx, prev_idx;
mbstate_t mbs, prevs;
memset(& prevs, 0, sizeof(mbstate_t));
for (idx = prev_idx = 0 ; idx < len ; idx++) {
size_t mbclen;
mbs = prevs;
mbclen = mbrlen(src + prev_idx, idx - prev_idx + 1, & mbs);
if (mbclen == (size_t) -1 || mbclen == 1 || mbclen == 0) {
/* singlebyte character. */
mbclen = 1;
prev_idx = idx + 1;
} else if (mbclen == (size_t) -2) {
/* a part of a multibyte character. */
mbclen = idx - prev_idx + 1;
} else if (mbclen > 1) {
/* the end of a multibyte character. */
prev_idx = idx + 1;
prevs = mbs;
} else {
/* Can't reach. */
}
dest[idx] = mbclen;
}
}
#else
/* a dummy function */
static void
index_multibyte_buffer(char* src ATTRIBUTE_UNUSED, char* dest ATTRIBUTE_UNUSED, int len ATTRIBUTE_UNUSED)
{
cant_happen();
}
#endif
/* do_index --- find index of a string */
NODE *
do_index(int nargs)
{
NODE *s1, *s2;
const char *p1, *p2;
size_t l1, l2;
long ret;
#if MBS_SUPPORT
int do_single_byte = FALSE;
mbstate_t mbs1, mbs2;
if (gawk_mb_cur_max > 1) {
memset(& mbs1, 0, sizeof(mbstate_t));
memset(& mbs2, 0, sizeof(mbstate_t));
}
#endif
POP_TWO_SCALARS(s1, s2);
if (do_lint) {
if ((s1->flags & (STRING|STRCUR)) == 0)
lintwarn(_("index: received non-string first argument"));
if ((s2->flags & (STRING|STRCUR)) == 0)
lintwarn(_("index: received non-string second argument"));
}
force_string(s1);
force_string(s2);
p1 = s1->stptr;
p2 = s2->stptr;
l1 = s1->stlen;
l2 = s2->stlen;
ret = 0;
/*
* Icky special case, index(foo, "") should return 1,
* since both bwk awk and mawk do, and since match("foo", "")
* returns 1. This makes index("", "") work, too, fwiw.
*/
if (l2 == 0) {
ret = 1;
goto out;
}
#if MBS_SUPPORT
if (gawk_mb_cur_max > 1) {
s1 = force_wstring(s1);
s2 = force_wstring(s2);
/*
* If we don't have valid wide character strings, use
* the real bytes.
*/
do_single_byte = ((s1->wstlen == 0 && s1->stlen > 0)
|| (s2->wstlen == 0 && s2->stlen > 0));
}
#endif
/* IGNORECASE will already be false if posix */
if (IGNORECASE) {
while (l1 > 0) {
if (l2 > l1)
break;
#if MBS_SUPPORT
if (! do_single_byte && gawk_mb_cur_max > 1) {
const wchar_t *pos;
pos = wcasestrstr(s1->wstptr, s1->wstlen, s2->wstptr, s2->wstlen);
if (pos == NULL)
ret = 0;
else
ret = pos - s1->wstptr + 1; /* 1-based */
goto out;
} else {
#endif
/*
* Could use tolower(*p1) == tolower(*p2) here.
* See discussion in eval.c as to why not.
*/
if (casetable[(unsigned char)*p1] == casetable[(unsigned char)*p2]
&& (l2 == 1 || strncasecmp(p1, p2, l2) == 0)) {
ret = 1 + s1->stlen - l1;
break;
}
l1--;
p1++;
#if MBS_SUPPORT
}
#endif
}
} else {
while (l1 > 0) {
if (l2 > l1)
break;
if (*p1 == *p2
&& (l2 == 1 || (l2 > 0 && memcmp(p1, p2, l2) == 0))) {
ret = 1 + s1->stlen - l1;
break;
}
#if MBS_SUPPORT
if (! do_single_byte && gawk_mb_cur_max > 1) {
const wchar_t *pos;
pos = wstrstr(s1->wstptr, s1->wstlen, s2->wstptr, s2->wstlen);
if (pos == NULL)
ret = 0;
else
ret = pos - s1->wstptr + 1; /* 1-based */
goto out;
} else {
l1--;
p1++;
}
#else
l1--;
p1++;
#endif
}
}
out:
DEREF(s1);
DEREF(s2);
return make_number((AWKNUM) ret);
}
/* double_to_int --- convert double to int, used several places */
double
double_to_int(double d)
{
if (d >= 0)
d = Floor(d);
else
d = Ceil(d);
return d;
}
/* do_int --- convert double to int for awk */
NODE *
do_int(int nargs)
{
NODE *tmp;
double d;
tmp = POP_SCALAR();
if (do_lint && (tmp->flags & (NUMCUR|NUMBER)) == 0)
lintwarn(_("int: received non-numeric argument"));
d = force_number(tmp);
d = double_to_int(d);
DEREF(tmp);
return make_number((AWKNUM) d);
}
/* do_isarray --- check if argument is array */
NODE *
do_isarray(int nargs)
{
NODE *tmp;
int ret = 1;
tmp = POP();
if (tmp->type != Node_var_array) {
ret = 0;
DEREF(tmp);
}
return make_number((AWKNUM) ret);
}
/* do_length --- length of a string, array or $0 */
NODE *
do_length(int nargs)
{
NODE *tmp;
size_t len;
tmp = POP();
if (tmp->type == Node_var_array) {
static short warned = FALSE;
if (do_posix)
fatal(_("length: received array argument"));
if (do_lint && ! warned) {
warned = TRUE;
lintwarn(_("`length(array)' is a gawk extension"));
}
return make_number((AWKNUM) tmp->table_size);
}
assert(tmp->type == Node_val);
if (do_lint && (tmp->flags & (STRING|STRCUR)) == 0)
lintwarn(_("length: received non-string argument"));
(void) force_string(tmp);
#if MBS_SUPPORT
if (gawk_mb_cur_max > 1) {
tmp = force_wstring(tmp);
len = tmp->wstlen;
/*
* If the bytes don't make a valid wide character
* string, fall back to the bytes themselves.
*/
if (len == 0 && tmp->stlen > 0)
len = tmp->stlen;
} else
#endif
len = tmp->stlen;
DEREF(tmp);
return make_number((AWKNUM) len);
}
/* do_log --- the log function */
NODE *
do_log(int nargs)
{
NODE *tmp;
double d, arg;
tmp = POP_SCALAR();
if (do_lint && (tmp->flags & (NUMCUR|NUMBER)) == 0)
lintwarn(_("log: received non-numeric argument"));
arg = (double) force_number(tmp);
if (arg < 0.0)
warning(_("log: received negative argument %g"), arg);
d = log(arg);
DEREF(tmp);
return make_number((AWKNUM) d);
}
/*
* format_tree() formats arguments of sprintf,
* and accordingly to a fmt_string providing a format like in
* printf family from C library. Returns a string node which value
* is a formatted string. Called by sprintf function.
*
* It is one of the uglier parts of gawk. Thanks to Michal Jaegermann
* for taming this beast and making it compatible with ANSI C.
*/
NODE *
format_tree(
const char *fmt_string,
size_t n0,
NODE **the_args,
long num_args)
{
/* copy 'l' bytes from 's' to 'obufout' checking for space in the process */
/* difference of pointers should be of ptrdiff_t type, but let us be kind */
#define bchunk(s, l) if (l) { \
while ((l) > ofre) { \
size_t olen = obufout - obuf; \
erealloc(obuf, char *, osiz * 2, "format_tree"); \
ofre += osiz; \
osiz *= 2; \
obufout = obuf + olen; \
} \
memcpy(obufout, s, (size_t) (l)); \
obufout += (l); \
ofre -= (l); \
}
/* copy one byte from 's' to 'obufout' checking for space in the process */
#define bchunk_one(s) { \
if (ofre < 1) { \
size_t olen = obufout - obuf; \
erealloc(obuf, char *, osiz * 2, "format_tree"); \
ofre += osiz; \
osiz *= 2; \
obufout = obuf + olen; \
} \
*obufout++ = *s; \
--ofre; \
}
/* Is there space for something L big in the buffer? */
#define chksize(l) if ((l) >= ofre) { \
size_t olen = obufout - obuf; \
size_t delta = osiz+l-ofre; \
erealloc(obuf, char *, osiz + delta, "format_tree"); \
obufout = obuf + olen; \
ofre += delta; \
osiz += delta; \
}
size_t cur_arg = 0;
NODE *r = NULL;
int i;
int toofew = FALSE;
char *obuf, *obufout;
size_t osiz, ofre;
const char *chbuf;
const char *s0, *s1;
int cs1;
NODE *arg;
long fw, prec, argnum;
int used_dollar;
int lj, alt, big_flag, bigbig_flag, small_flag, have_prec, need_format;
long *cur = NULL;
uintmax_t uval;
int sgn;
int base;
/*
* Although this is an array, the elements serve two different
* purposes. The first element is the general buffer meant
* to hold the entire result string. The second one is a
* temporary buffer for large floating point values. They
* could just as easily be separate variables, and the
* code might arguably be clearer.
*/
struct {
char *buf;
size_t bufsize;
char stackbuf[30];
} cpbufs[2];
#define cpbuf cpbufs[0].buf
char *cend = &cpbufs[0].stackbuf[sizeof(cpbufs[0].stackbuf)];
char *cp;
const char *fill;
AWKNUM tmpval;
char signchar = FALSE;
size_t len;
int zero_flag = FALSE;
int quote_flag = FALSE;
int ii, jj;
char *chp;
size_t copy_count, char_count;
static const char sp[] = " ";
static const char zero_string[] = "0";
static const char lchbuf[] = "0123456789abcdef";
static const char Uchbuf[] = "0123456789ABCDEF";
#define INITIAL_OUT_SIZE 512
emalloc(obuf, char *, INITIAL_OUT_SIZE, "format_tree");
obufout = obuf;
osiz = INITIAL_OUT_SIZE;
ofre = osiz - 2;
cur_arg = 1;
{
size_t k;
for (k = 0; k < sizeof(cpbufs)/sizeof(cpbufs[0]); k++) {
cpbufs[k].bufsize = sizeof(cpbufs[k].stackbuf);
cpbufs[k].buf = cpbufs[k].stackbuf;
}
}
/*
* The point of this goop is to grow the buffer
* holding the converted number, so that large
* values don't overflow a fixed length buffer.
*/
#define PREPEND(CH) do { \
if (cp == cpbufs[0].buf) { \
char *prev = cpbufs[0].buf; \
emalloc(cpbufs[0].buf, char *, 2*cpbufs[0].bufsize, \
"format_tree"); \
memcpy((cp = cpbufs[0].buf+cpbufs[0].bufsize), prev, \
cpbufs[0].bufsize); \
cpbufs[0].bufsize *= 2; \
if (prev != cpbufs[0].stackbuf) \
efree(prev); \
cend = cpbufs[0].buf+cpbufs[0].bufsize; \
} \
*--cp = (CH); \
} while(0)
/*
* Check first for use of `count$'.
* If plain argument retrieval was used earlier, choke.
* Otherwise, return the requested argument.
* If not `count$' now, but it was used earlier, choke.
* If this format is more than total number of args, choke.
* Otherwise, return the current argument.
*/
#define parse_next_arg() { \
if (argnum > 0) { \
if (cur_arg > 1) { \
msg(_("fatal: must use `count$' on all formats or none")); \
goto out; \
} \
arg = the_args[argnum]; \
} else if (used_dollar) { \
msg(_("fatal: must use `count$' on all formats or none")); \
arg = 0; /* shutup the compiler */ \
goto out; \
} else if (cur_arg >= num_args) { \
arg = 0; /* shutup the compiler */ \
toofew = TRUE; \
break; \
} else { \
arg = the_args[cur_arg]; \
cur_arg++; \
} \
}
need_format = FALSE;
used_dollar = FALSE;
s0 = s1 = fmt_string;
while (n0-- > 0) {
if (*s1 != '%') {
s1++;
continue;
}
need_format = TRUE;
bchunk(s0, s1 - s0);
s0 = s1;
cur = &fw;
fw = 0;
prec = 0;
base = 0;
argnum = 0;
have_prec = FALSE;
signchar = FALSE;
zero_flag = FALSE;
quote_flag = FALSE;
lj = alt = big_flag = bigbig_flag = small_flag = FALSE;
fill = sp;
cp = cend;
chbuf = lchbuf;
s1++;
retry:
if (n0-- == 0) /* ran out early! */
break;
switch (cs1 = *s1++) {
case (-1): /* dummy case to allow for checking */
check_pos:
if (cur != &fw)
break; /* reject as a valid format */
goto retry;
case '%':
need_format = FALSE;
/*
* 29 Oct. 2002:
* The C99 standard pages 274 and 279 seem to imply that
* since there's no arg converted, the field width doesn't
* apply. The code already was that way, but this
* comment documents it, at least in the code.
*/
if (do_lint) {
const char *msg = NULL;
if (fw && ! have_prec)
msg = _("field width is ignored for `%%' specifier");
else if (fw == 0 && have_prec)
msg = _("precision is ignored for `%%' specifier");
else if (fw && have_prec)
msg = _("field width and precision are ignored for `%%' specifier");
if (msg != NULL)
lintwarn("%s", msg);
}
bchunk_one("%");
s0 = s1;
break;
case '0':
/*
* Only turn on zero_flag if we haven't seen
* the field width or precision yet. Otherwise,
* screws up floating point formatting.
*/
if (cur == & fw)
zero_flag = TRUE;
if (lj)
goto retry;
/* FALL through */
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (cur == NULL)
break;
if (prec >= 0)
*cur = cs1 - '0';
/*
* with a negative precision *cur is already set
* to -1, so it will remain negative, but we have
* to "eat" precision digits in any case
*/
while (n0 > 0 && *s1 >= '0' && *s1 <= '9') {
--n0;
*cur = *cur * 10 + *s1++ - '0';
}
if (prec < 0) /* negative precision is discarded */
have_prec = FALSE;
if (cur == &prec)
cur = NULL;
if (n0 == 0) /* badly formatted control string */
continue;
goto retry;
case '$':
if (do_traditional) {
msg(_("fatal: `$' is not permitted in awk formats"));
goto out;
}
if (cur == &fw) {
argnum = fw;
fw = 0;
used_dollar = TRUE;
if (argnum <= 0) {
msg(_("fatal: arg count with `$' must be > 0"));
goto out;
}
if (argnum >= num_args) {
msg(_("fatal: arg count %ld greater than total number of supplied arguments"), argnum);
goto out;
}
} else {
msg(_("fatal: `$' not permitted after period in format"));
goto out;
}
goto retry;
case '*':
if (cur == NULL)
break;
if (! do_traditional && isdigit((unsigned char) *s1)) {
int val = 0;
for (; n0 > 0 && *s1 && isdigit((unsigned char) *s1); s1++, n0--) {
val *= 10;
val += *s1 - '0';
}
if (*s1 != '$') {
msg(_("fatal: no `$' supplied for positional field width or precision"));
goto out;
} else {
s1++;
n0--;
}
if (val >= num_args) {
toofew = TRUE;
break;
}
arg = the_args[val];
} else {
parse_next_arg();
}
*cur = force_number(arg);
if (*cur < 0 && cur == &fw) {
*cur = -*cur;
lj++;
}
if (cur == &prec) {
if (*cur >= 0)
have_prec = TRUE;
else
have_prec = FALSE;
cur = NULL;
}
goto retry;
case ' ': /* print ' ' or '-' */
/* 'space' flag is ignored */
/* if '+' already present */
if (signchar != FALSE)
goto check_pos;
/* FALL THROUGH */
case '+': /* print '+' or '-' */
signchar = cs1;
goto check_pos;
case '-':
if (prec < 0)
break;
if (cur == &prec) {
prec = -1;
goto retry;
}
fill = sp; /* if left justified then other */
lj++; /* filling is ignored */
goto check_pos;
case '.':
if (cur != &fw)
break;
cur = ≺
have_prec = TRUE;
goto retry;
case '#':
alt = TRUE;
goto check_pos;
case '\'':
#if defined(HAVE_LOCALE_H)
/* allow quote_flag if there is a thousands separator. */
if (loc.thousands_sep[0] != '\0')
quote_flag = TRUE;
goto check_pos;
#else
goto retry;
#endif
case 'l':
if (big_flag)
break;
else {
static short warned = FALSE;
if (do_lint && ! warned) {
lintwarn(_("`l' is meaningless in awk formats; ignored"));
warned = TRUE;
}
if (do_posix) {
msg(_("fatal: `l' is not permitted in POSIX awk formats"));
goto out;
}
}
big_flag = TRUE;
goto retry;
case 'L':
if (bigbig_flag)
break;
else {
static short warned = FALSE;
if (do_lint && ! warned) {
lintwarn(_("`L' is meaningless in awk formats; ignored"));
warned = TRUE;
}
if (do_posix) {
msg(_("fatal: `L' is not permitted in POSIX awk formats"));
goto out;
}
}
bigbig_flag = TRUE;
goto retry;
case 'h':
if (small_flag)
break;
else {
static short warned = FALSE;
if (do_lint && ! warned) {
lintwarn(_("`h' is meaningless in awk formats; ignored"));
warned = TRUE;
}
if (do_posix) {
msg(_("fatal: `h' is not permitted in POSIX awk formats"));
goto out;
}
}
small_flag = TRUE;
goto retry;
case 'c':
need_format = FALSE;
parse_next_arg();
/* user input that looks numeric is numeric */
if ((arg->flags & (MAYBE_NUM|NUMBER)) == MAYBE_NUM)
(void) force_number(arg);
if (arg->flags & NUMBER) {