553 lines
11 KiB
C
553 lines
11 KiB
C
/*
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
|
|
#include "bashansi.h"
|
|
#include "shell.h"
|
|
#include "builtins.h"
|
|
#include "stdc.h"
|
|
#include "bashgetopt.h"
|
|
|
|
#if !defined (errno)
|
|
extern int errno;
|
|
#endif
|
|
|
|
#define PF(f, func) { \
|
|
if (fieldwidth) \
|
|
if (precision) \
|
|
(void)fprintf(ofp, f, fieldwidth, precision, func); \
|
|
else \
|
|
(void)fprintf(ofp, f, fieldwidth, func); \
|
|
else if (precision) \
|
|
(void)fprintf(ofp, f, precision, func); \
|
|
else \
|
|
(void)fprintf(ofp, f, func); \
|
|
}
|
|
|
|
static int asciicode __P((void));
|
|
static void escape __P((char *));
|
|
static int getchr __P((void));
|
|
static double getdouble __P((void));
|
|
static int getint __P((int *));
|
|
static int getlong __P((long *));
|
|
static char *getstr __P((void));
|
|
static char *mklong __P((char *, int));
|
|
static void usage __P((void));
|
|
|
|
static char **gargv;
|
|
|
|
int print_builtin ();
|
|
static int printf_main ();
|
|
static int printargs ();
|
|
|
|
static FILE *ofp;
|
|
|
|
extern char *ansicstr ();
|
|
extern char *single_quote ();
|
|
extern char **make_builtin_argv ();
|
|
|
|
extern char *this_command_name;
|
|
|
|
extern int optind;
|
|
|
|
static char *print_doc[] = {
|
|
"Output the arguments. The -f option means to use the argument as a",
|
|
"format string as would be supplied to printf(1). The rest of the",
|
|
"options are as in ksh.",
|
|
(char *)NULL
|
|
};
|
|
|
|
struct builtin print_struct = {
|
|
"print",
|
|
print_builtin,
|
|
BUILTIN_ENABLED,
|
|
print_doc,
|
|
"print [-Rnprs] [-u unit] [-f format] [arguments]",
|
|
(char *)0
|
|
};
|
|
|
|
#ifndef ISOPTION
|
|
#define ISOPTION(s, c) (s[0] == '-' && s[2] == '\0' && s[1] == c)
|
|
#endif
|
|
|
|
int
|
|
print_builtin (list)
|
|
WORD_LIST *list;
|
|
{
|
|
int c, r, nflag, raw, ofd, sflag;
|
|
char **v, *pfmt, *arg;
|
|
WORD_LIST *l;
|
|
|
|
nflag = raw = sflag = 0;
|
|
ofd = 1;
|
|
pfmt = 0;
|
|
|
|
reset_internal_getopt ();
|
|
while ((c = internal_getopt (list, "Rnprsu:f:")) != -1)
|
|
{
|
|
switch (c)
|
|
{
|
|
case 'R':
|
|
raw = 2;
|
|
loptend = lcurrent;
|
|
if (loptend && ISOPTION (loptend->word->word, 'n'))
|
|
{
|
|
loptend = loptend->next;
|
|
nflag = 1;
|
|
}
|
|
goto opt_end;
|
|
case 'r':
|
|
raw = 1;
|
|
break;
|
|
case 'n':
|
|
nflag = 1;
|
|
break;
|
|
case 's':
|
|
sflag = 1;
|
|
break;
|
|
case 'p':
|
|
break; /* NOP */
|
|
case 'u':
|
|
if (all_digits (list_optarg))
|
|
ofd = atoi (list_optarg);
|
|
else
|
|
{
|
|
for (l = list; l->next && l->next != lcurrent; l = l->next);
|
|
lcurrent = loptend = l;
|
|
goto opt_end;
|
|
}
|
|
break;
|
|
case 'f':
|
|
pfmt = list_optarg;
|
|
break;
|
|
default:
|
|
builtin_usage ();
|
|
return (EX_USAGE);
|
|
}
|
|
}
|
|
|
|
opt_end:
|
|
list = loptend;
|
|
|
|
ofp = (ofd == 1) ? stdout : fdopen (dup (ofd), "w");
|
|
|
|
if (pfmt)
|
|
{
|
|
v = word_list_to_argv (list, 0, 2, &c);
|
|
v[0] = this_command_name;
|
|
v[1] = pfmt;
|
|
r = printf_main (c, v);
|
|
free (v);
|
|
return r;
|
|
}
|
|
|
|
if (raw)
|
|
{
|
|
for (l = list; l; l = l->next)
|
|
{
|
|
fprintf (ofp, "%s", l->word->word);
|
|
if (l->next)
|
|
fprintf (ofp, " ");
|
|
}
|
|
if (nflag == 0)
|
|
fprintf (ofp, "\n");
|
|
fflush (ofp);
|
|
return (0);
|
|
}
|
|
|
|
r = printargs (list, ofp);
|
|
if (r && nflag == 0)
|
|
fprintf (ofp, "\n");
|
|
if (ofd != 1)
|
|
fclose (ofp);
|
|
return 0;
|
|
}
|
|
|
|
static int printargs (list, ofp)
|
|
WORD_LIST *list;
|
|
FILE *ofp;
|
|
{
|
|
WORD_LIST *l;
|
|
char *ostr;
|
|
int sawc;
|
|
|
|
for (sawc = 0, l = list; l; l = l->next)
|
|
{
|
|
ostr = ansicstr (l->word->word, strlen (l->word->word), &sawc);
|
|
fprintf (ofp, "%s", ostr);
|
|
free (ostr);
|
|
if (sawc)
|
|
return (0);
|
|
if (l->next)
|
|
fprintf (ofp, " ");
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
printf_main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
static char *skip1, *skip2;
|
|
int ch, end, fieldwidth, precision;
|
|
char convch, nextch, *format, *fmt, *start;
|
|
|
|
while ((ch = getopt(argc, argv, "")) != EOF)
|
|
switch (ch) {
|
|
case '?':
|
|
default:
|
|
usage();
|
|
return (1);
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc < 1) {
|
|
usage();
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Basic algorithm is to scan the format string for conversion
|
|
* specifications -- once one is found, find out if the field
|
|
* width or precision is a '*'; if it is, gather up value. Note,
|
|
* format strings are reused as necessary to use up the provided
|
|
* arguments, arguments of zero/null string are provided to use
|
|
* up the format string.
|
|
*/
|
|
skip1 = "#-+ 0";
|
|
skip2 = "*0123456789";
|
|
|
|
escape(fmt = format = *argv); /* backslash interpretation */
|
|
gargv = ++argv;
|
|
for (;;) {
|
|
end = 0;
|
|
/* find next format specification */
|
|
next: for (start = fmt;; ++fmt) {
|
|
if (!*fmt) {
|
|
/* avoid infinite loop */
|
|
if (end == 1) {
|
|
warnx("missing format character",
|
|
NULL, NULL);
|
|
return (1);
|
|
}
|
|
end = 1;
|
|
if (fmt > start)
|
|
(void)printf("%s", start);
|
|
if (!*gargv)
|
|
return (0);
|
|
fmt = format;
|
|
goto next;
|
|
}
|
|
/* %% prints a % */
|
|
if (*fmt == '%') {
|
|
if (*++fmt != '%')
|
|
break;
|
|
*fmt++ = '\0';
|
|
(void)printf("%s", start);
|
|
goto next;
|
|
}
|
|
}
|
|
|
|
/* skip to field width */
|
|
for (; strchr(skip1, *fmt); ++fmt);
|
|
if (*fmt == '*') {
|
|
if (getint(&fieldwidth))
|
|
return (1);
|
|
} else
|
|
fieldwidth = 0;
|
|
|
|
/* skip to possible '.', get following precision */
|
|
for (; strchr(skip2, *fmt); ++fmt);
|
|
if (*fmt == '.')
|
|
++fmt;
|
|
if (*fmt == '*') {
|
|
if (getint(&precision))
|
|
return (1);
|
|
} else
|
|
precision = 0;
|
|
|
|
/* skip to conversion char */
|
|
for (; strchr(skip2, *fmt); ++fmt);
|
|
if (!*fmt) {
|
|
warnx("missing format character", NULL, NULL);
|
|
return (1);
|
|
}
|
|
|
|
convch = *fmt;
|
|
nextch = *++fmt;
|
|
*fmt = '\0';
|
|
switch(convch) {
|
|
case 'c': {
|
|
char p;
|
|
|
|
p = getchr();
|
|
PF(start, p);
|
|
break;
|
|
}
|
|
case 's': {
|
|
char *p;
|
|
|
|
p = getstr();
|
|
PF(start, p);
|
|
break;
|
|
}
|
|
case 'b': { /* expand escapes in argument */
|
|
char *p;
|
|
|
|
p = getstr();
|
|
escape(p);
|
|
PF(start, p);
|
|
break;
|
|
}
|
|
case 'q': { /* print with shell single quoting */
|
|
char *p, *p2;
|
|
|
|
p = getstr();
|
|
p2 = single_quote(p);
|
|
PF(start, p2);
|
|
free(p2);
|
|
break;
|
|
}
|
|
case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
|
|
long p;
|
|
char *f;
|
|
|
|
if ((f = mklong(start, convch)) == NULL)
|
|
return (1);
|
|
if (getlong(&p))
|
|
return (1);
|
|
PF(f, p);
|
|
break;
|
|
}
|
|
case 'e': case 'E': case 'f': case 'g': case 'G': {
|
|
double p;
|
|
|
|
p = getdouble();
|
|
PF(start, p);
|
|
break;
|
|
}
|
|
default:
|
|
warnx("illegal format character", NULL, NULL);
|
|
return (1);
|
|
}
|
|
*fmt = nextch;
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
static char *
|
|
mklong(str, ch)
|
|
char *str;
|
|
int ch;
|
|
{
|
|
static char copy[64];
|
|
int len;
|
|
|
|
len = strlen(str) + 2;
|
|
memmove(copy, str, len - 3);
|
|
copy[len - 3] = 'l';
|
|
copy[len - 2] = ch;
|
|
copy[len - 1] = '\0';
|
|
return (copy);
|
|
}
|
|
|
|
static void
|
|
escape(fmt)
|
|
register char *fmt;
|
|
{
|
|
register char *store;
|
|
register int value, c;
|
|
|
|
for (store = fmt; c = *fmt; ++fmt, ++store) {
|
|
if (c != '\\') {
|
|
*store = c;
|
|
continue;
|
|
}
|
|
switch (*++fmt) {
|
|
case '\0': /* EOS, user error */
|
|
*store = '\\';
|
|
*++store = '\0';
|
|
return;
|
|
case '\\': /* backslash */
|
|
case '\'': /* single quote */
|
|
*store = *fmt;
|
|
break;
|
|
case 'a': /* bell/alert */
|
|
*store = '\7';
|
|
break;
|
|
case 'b': /* backspace */
|
|
*store = '\b';
|
|
break;
|
|
case 'c':
|
|
return;
|
|
case 'e':
|
|
case 'E':
|
|
*store = '\033';
|
|
break;
|
|
case 'f': /* form-feed */
|
|
*store = '\f';
|
|
break;
|
|
case 'n': /* newline */
|
|
*store = '\n';
|
|
break;
|
|
case 'r': /* carriage-return */
|
|
*store = '\r';
|
|
break;
|
|
case 't': /* horizontal tab */
|
|
*store = '\t';
|
|
break;
|
|
case 'v': /* vertical tab */
|
|
*store = '\13';
|
|
break;
|
|
/* octal constant */
|
|
case '0': case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7':
|
|
for (c = 3, value = 0;
|
|
c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) {
|
|
value <<= 3;
|
|
value += *fmt - '0';
|
|
}
|
|
--fmt;
|
|
*store = value;
|
|
break;
|
|
default:
|
|
*store = *fmt;
|
|
break;
|
|
}
|
|
}
|
|
*store = '\0';
|
|
}
|
|
|
|
static int
|
|
getchr()
|
|
{
|
|
if (!*gargv)
|
|
return ('\0');
|
|
return ((int)**gargv++);
|
|
}
|
|
|
|
static char *
|
|
getstr()
|
|
{
|
|
if (!*gargv)
|
|
return ("");
|
|
return (*gargv++);
|
|
}
|
|
|
|
static char *Number = "+-.0123456789";
|
|
static int
|
|
getint(ip)
|
|
int *ip;
|
|
{
|
|
long val;
|
|
|
|
if (getlong(&val))
|
|
return (1);
|
|
if (val > INT_MAX) {
|
|
warnx("%s: %s", *gargv, strerror(ERANGE));
|
|
return (1);
|
|
}
|
|
*ip = val;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
getlong(lp)
|
|
long *lp;
|
|
{
|
|
long val;
|
|
char *ep;
|
|
|
|
if (!*gargv) {
|
|
*lp = 0;
|
|
return (0);
|
|
}
|
|
if (strchr(Number, **gargv)) {
|
|
errno = 0;
|
|
val = strtol(*gargv, &ep, 0);
|
|
if (*ep != '\0') {
|
|
warnx("%s: illegal number", *gargv, NULL);
|
|
return (1);
|
|
}
|
|
if (errno == ERANGE)
|
|
if (val == LONG_MAX) {
|
|
warnx("%s: %s", *gargv, strerror(ERANGE));
|
|
return (1);
|
|
}
|
|
if (val == LONG_MIN) {
|
|
warnx("%s: %s", *gargv, strerror(ERANGE));
|
|
return (1);
|
|
}
|
|
|
|
*lp = val;
|
|
++gargv;
|
|
return (0);
|
|
}
|
|
*lp = (long)asciicode();
|
|
return (0);
|
|
}
|
|
|
|
static double
|
|
getdouble()
|
|
{
|
|
if (!*gargv)
|
|
return ((double)0);
|
|
if (strchr(Number, **gargv))
|
|
return (atof(*gargv++));
|
|
return ((double)asciicode());
|
|
}
|
|
|
|
static int
|
|
asciicode()
|
|
{
|
|
register int ch;
|
|
|
|
ch = **gargv;
|
|
if (ch == '\'' || ch == '"')
|
|
ch = (*gargv)[1];
|
|
++gargv;
|
|
return (ch);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: print [-Rnprs] [-u unit] [-f format] [arg ...]\n");
|
|
}
|