Initial import, 0.1 + pk 0.2.4-B1

[unix-history] / bin / test / test.c

/*
* GNU test program (ksb and mjb)
*
* Modified to run with the GNU shell Apr 25, 1988 by bfox.
*
*???   -G      file is owned by same gid; the effective gid is checked
* Chet Ramey, CWRU 3/23/89
*
* Fixed a BSD dependency (_doprnt()) in the port to AIX 2.2
* Chet Ramey, CWRU 5/3/89
*/

/* Copyright (C) 1987,1989 Free Software Foundation, Inc.

This file is part of GNU Bash, the Bourne Again SHell.

Bash 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 1, or (at your option) any later
version.

Bash 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 Bash; see the file COPYING.  If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */

#include <stdio.h>
#include <varargs.h>

#ifndef SONY
#include <fcntl.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>

#ifndef R_OK
#define R_OK 4
#define W_OK 2
#define X_OK 1
#define F_OK 0
#endif

#ifndef lint
static char *rcsid = "$Id: gtest.c,v 1.10 88/07/02 13:34:45 afb Exp Locker: afb $";
#endif

/* The following few defines control the truth and false output of each stage.
  TRUE and FALSE are what we use to compute the final output value.
  SHELL_BOOLEAN is the form which returns truth or falseness in shell terms.
  TRUTH_OR is how to do logical or with TRUE and FALSE.
  TRUTH_AND is how to do logical and with TRUE and FALSE..
  Default is TRUE = 1, FALSE = 0, TRUTH_OR = a | b, TRUTH_AND = a & b,
   SHELL_BOOLEAN = (!value). */
#define TRUE 1
#define FALSE 0
#define SHELL_BOOLEAN(value) (!(value))
#define TRUTH_OR(a, b) ((a) | (b))
#define TRUTH_AND(a, b) ((a) & (b))


/* Define STANDALONE to get the /bin/test version.  Otherwise, we are
  making this for the shell. */
/* #define STANDALONE */

#ifdef STANDALONE
#define test_exit(val) exit (val)
#else
#include <setjmp.h>
jmp_buf test_exit_buf;
int test_error_return = 0;
#define test_exit(val) test_error_return = val, longjmp (test_exit_buf, 1)
#endif /* STANDALONE */

#ifdef SYSV
int sys_v = 1;
#else
int sys_v = 0;
#endif

static int pos;                 /* position in list                     */
static int argc;                /* number of args from command line     */
static char **argv;             /* the argument list                    */

static void
test_syntax_error (format, arg)
    char *format, *arg;
{
 (void) fprintf (stderr, "%s: ", argv[0]);
 (void) fprintf (stderr, format, arg);
 test_exit (SHELL_BOOLEAN (FALSE));
}

test_io_error (name)
    char *name;
{
 extern int errno;
 int old_errno = errno;
 fprintf (stderr, "%s: ", argv[0]);
 errno = old_errno;
 perror (name);
 test_exit (SHELL_BOOLEAN (FALSE));
}

/*
* advance - increment our position in the argument list.  Check that
*      we're not past the end of the argument list.  This check is
*      supressed if the argument is FALSE.  made a macro for efficiency.
*/
#ifndef lint
#define advance(f)      (++pos, f && (pos < argc ? 0 : beyond()))
#endif

#if !defined(advance)
static int
advance (f)
    int f;
{
 ++pos;
 if (f && pos >= argc)
   beyond ();
}

#endif

#define unary_advance() (advance (1),++pos)

/*
* beyond - call when we're beyond the end of the argument list (an
*      error condition)
*/
static int
beyond ()
{
 test_syntax_error ("argument expected\n", (char *)NULL);
}

/*
* int_expt_err - when an integer argument was expected, but something else
*      was found.
*/
static void
int_expt_err (pch)
    char *pch;
{
 test_syntax_error ("integer expression expected %s\n", pch);
}

/*
* isint - is the argument whose position in the argument vector is 'm' an
*      integer? Convert it for me too, returning it's value in 'pl'.
*/
static int
isint (m, pl)
    int m;
    long *pl;
{
 extern long atol ();
 register char *pch;

 pch = argv[m];

 /* Skip leading whitespace characters. */
 while (*pch == '\t' || *pch == ' ')
   pch++;

 /* accept negative numbers but not '-' alone */
 if ('-' == *pch)
   if ('\000' == *++pch)
     return 0;

 while ('\000' != *pch)
   {
     switch (*pch)
       {
       case '0':
       case '1':
       case '2':
       case '3':
       case '4':
       case '5':
       case '6':
       case '7':
       case '8':
       case '9':
         break;
       default:
         return (FALSE);
       }
     ++pch;
   }
 *pl = atol (argv[m]);
 return (TRUE);
}

/*
* age_of - find the age of the given file.  Return YES or NO depending
*      on whether the file exists, and if it does, fill in the age with
*      the modify time.
*/
static int
age_of (posit, age)
    int posit;
    long *age;
{
 struct stat stat_buf;

 if (stat (argv[posit], &stat_buf) < 0)
   {
     return (FALSE);
   }
 *age = stat_buf.st_mtime;
 return (TRUE);
}

/*
* term - parse a term and return 1 or 0 depending on whether the term
*      evaluates to true or false, respectively.
*
* term ::=
*      '-'('h'|'d'|'f'|'r'|'s'|'w'|'c'|'b'|'p'|'u'|'g'|'k') filename
*      '-'('L'|'x') filename
*      '-t' [ int ]
*      '-'('z'|'n') string
*      string
*      string ('!='|'=') string
*      <int> '-'(eq|ne|le|lt|ge|gt) <int>
*      file '-'(nt|ot|ef) file
*      '(' <expr> ')'
* int ::=
*      '-l' string
*      positive and negative integers
*/
static int
term ()
{
 int expr ();
 auto struct stat stat_buf, stat_spare;
 auto long int l, r;
 auto int l_is_l, r_is_l; /* are the left and right integer
                           * expressions of the form '-l string'?
                           */
 auto int value, fd;

 if (pos >= argc)
   beyond ();

 /* Deal with leading "not". */
 if (pos < argc && '!' == argv[pos][0] && '\000' == argv[pos][1])
   {
     advance (1);

     /* This has to be rewritten to handle the TRUTH and FALSE stuff. */
     return (!term ());
   }
 
 if ('(' == argv[pos][0] && '\000' == argv[pos][1])
   {
     advance (1);
     value = expr ();
     if (')' != argv[pos][0] || '\000' != argv[pos][1])
       test_syntax_error ("argument expected, found %s\n", argv[pos]);
     advance (0);
     return (TRUE == (value));
   }
 /* are there enough arguments left that this could be dyadic? */
 if (pos + 3 <= argc)
   {
     register int op;
     if ('-' == argv[pos][0] && 'l' == argv[pos][1] &&
         '\000' == argv[pos][2])
       {
         l_is_l = 1;
         op = pos + 2;
         advance (0);
       }
     else
       {
         l_is_l = 0;
         op = pos + 1;
       }
     if ('-' == argv[op + 1][0] && 'l' == argv[op + 1][1]
         && '\000' == argv[op + 1][2])
       {
         r_is_l = 1;
         advance (0);
       }
     else
       r_is_l = 0;

     if ('-' == argv[op][0])
       {
         /* check for eq, nt, and stuff */
         switch (argv[op][1])
           {
           default:
             break;
           case 'l':
             if ('t' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* lt */
                 if (l_is_l)
                   l = strlen (argv[op - 1]);
                 else
                   {
                     if (!isint (op - 1, &l))
                       int_expt_err ("before -lt");
                   }

                 if (r_is_l)
                   r = strlen (argv[op + 2]);
                 else
                   {
                     if (!isint (op + 1, &r))
                       int_expt_err ("after -lt");
                   }
                 pos += 3;
                 return (TRUE == (l < r));
               }

             if ('e' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* le */
                 if (l_is_l)
                   l = strlen (argv[op - 1]);
                 else
                   {
                     if (!isint (op - 1, &l))
                       int_expt_err ("before -le");
                   }
                 if (r_is_l)
                   r = strlen (argv[op + 2]);
                 else
                   {
                     if (!isint (op + 1, &r))
                       int_expt_err ("after -le");
                   }
                 pos += 3;
                 return (TRUE == (l <= r));
               }
             break;

           case 'g':

             if ('t' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* gt integer greater than */
                 if (l_is_l)
                   l = strlen (argv[op - 1]);
                 else
                   {
                     if (!isint (op - 1, &l))
                       int_expt_err ("before -gt");
                   }
                 if (r_is_l)
                   r = strlen (argv[op + 2]);
                 else
                   {
                     if (!isint (op + 1, &r))
                       int_expt_err ("after -gt");
                   }
                 pos += 3;
                 return (TRUE == (l > r));
               }

             if ('e' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* ge - integer greater than or equal to */
                 if (l_is_l)
                   l = strlen (argv[op - 1]);
                 else
                   {
                     if (!isint (op - 1, &l))
                       int_expt_err ("before -ge");
                   }
                 if (r_is_l)
                   r = strlen (argv[op + 2]);
                 else
                   {
                     if (!isint (op + 1, &r))
                       int_expt_err ("after -ge");
                   }
                 pos += 3;
                 return (TRUE == (l >= r));
               }
             break;

           case 'n':
             if ('t' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* nt - newer than */
                 pos += 3;
                 if (l_is_l || r_is_l)
                   test_syntax_error ("-nt does not accept -l\n",
                                      (char *)NULL);
                 if (age_of (op - 1, &l) && age_of (op + 1, &r))
                   return (TRUE == (l > r));
                 else
                   return (FALSE);
               }

             if ('e' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* ne - integer not equal */
                 if (l_is_l)
                   l = strlen (argv[op - 1]);
                 else
                   {
                     if (!isint (op - 1, &l))
                       int_expt_err ("before -ne");
                   }
                 if (r_is_l)
                   r = strlen (argv[op + 2]);
                 else
                   {
                     if (!isint (op + 1, &r))
                       int_expt_err ("after -ne");
                   }
                 pos += 3;
                 return (TRUE == (l != r));
               }
             break;

           case 'e':
             if ('q' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* eq - integer equal */
                 if (l_is_l)
                   l = strlen (argv[op - 1]);
                 else
                   {
                     if (!isint (op - 1, &l))
                       int_expt_err ("before -eq");
                   }
                 if (r_is_l)
                   r = strlen (argv[op + 2]);
                 else
                   {
                     if (!isint (op + 1, &r))
                       int_expt_err ("after -eq");
                   }
                 pos += 3;
                 return (TRUE == (l == r));
               }

             if ('f' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* ef - hard link? */
                 pos += 3;
                 if (l_is_l || r_is_l)
                   test_syntax_error ("-ef does not accept -l\n",
                                      (char *)NULL);
                 if (stat (argv[op - 1], &stat_buf) < 0)
                   return (FALSE);
                 if (stat (argv[op + 1], &stat_spare) < 0)
                   return (FALSE);
                 return (TRUE ==
                         (stat_buf.st_dev == stat_spare.st_dev &&
                          stat_buf.st_ino == stat_spare.st_ino));
               }
             break;

           case 'o':
             if ('t' == argv[op][2] && '\000' == argv[op][3])
               {
                 /* ot - older than */
                 pos += 3;
                 if (l_is_l || r_is_l)
                   test_syntax_error ("-nt does not accept -l\n",
                                      (char *)NULL);
                 if (age_of (op - 1, &l) && age_of (op + 1, &r))
                   return (TRUE == (l < r));
                 return (FALSE);
               }
             break;
           }
       }

     if ('=' == argv[op][0] && '\000' == argv[op][1])
       {
         value = (0 == strcmp (argv[pos], argv[pos + 2]));
         pos += 3;
         return (TRUE == value);
       }
     if ('!' == argv[op][0] && '=' == argv[op][1] && '\000' == argv[op][2])
       {
         value = 0 != strcmp (argv[pos], argv[pos + 2]);
         pos += 3;
         return (TRUE == value);
       }
   }

 /* Might be a switch type argument */
 if ('-' == argv[pos][0] && '\000' == argv[pos][2] /* && pos < argc-1 */ )
   {
     switch (argv[pos][1])
       {
       default:
         break;

         /* All of the following unary operators use unary_advance (), which
            checks to make sure that there is an argument, and then advances
            pos right past it.  This means that pos - 1 is the location of the
            argument. */

       case 'r':               /* file is readable? */
         unary_advance ();
         value = -1 != access (argv[pos - 1], R_OK);
         return (TRUE == value);

       case 'w':               /* File is writeable? */
         unary_advance ();
         value = -1 != access (argv[pos - 1], W_OK);
         return (TRUE == value);

       case 'x':               /* File is executable? */
         unary_advance ();
         value = -1 != access (argv[pos - 1], X_OK);
         return (TRUE == value);

       case 'O':               /* File is owned by you? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (geteuid () == stat_buf.st_uid));

       case 'f':               /* File is a file? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         /*
          * Under SYSV, -f is true if the given file exists
          * and is a regular file.  Other places, this checks
          * to see if the given file is not a directory.
          */
         if (sys_v)
           return (TRUE == ((S_IFREG == (stat_buf.st_mode & S_IFMT)) ||
                            (0 == (stat_buf.st_mode & S_IFMT))));
         else
           return (TRUE == (S_IFDIR != (stat_buf.st_mode & S_IFMT)));

       case 'd':               /* File is a directory? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (S_IFDIR == (stat_buf.st_mode & S_IFMT)));

       case 's':               /* File has something in it? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (stat_buf.st_size > (off_t) 0));

#ifdef S_IFSOCK
       case 'S':               /* File is a socket? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (S_IFSOCK == (stat_buf.st_mode & S_IFMT)));
#endif

       case 'c': /* File is character special? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (S_IFCHR == (stat_buf.st_mode & S_IFMT)));

       case 'b':               /* File is block special? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (S_IFBLK == (stat_buf.st_mode & S_IFMT)));

       case 'p':               /* File is a named pipe? */
         unary_advance ();
#ifndef S_IFIFO
         return (FALSE);
#else
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);
         return (TRUE == (S_IFIFO == (stat_buf.st_mode & S_IFMT)));
#endif /* S_IFIFO */

       case 'L':               /* Same as -h  */
         /*FALLTHROUGH*/

       case 'h':               /* File is a symbolic link? */
         unary_advance ();
#ifndef S_IFLNK
         return (FALSE);
#else
         if (lstat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (S_IFLNK == (stat_buf.st_mode & S_IFMT)));
#endif /* S_IFLNK */

       case 'u':               /* File is setuid? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (0 != (stat_buf.st_mode & S_ISUID)));

       case 'g':               /* File is setgid? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);

         return (TRUE == (0 != (stat_buf.st_mode & S_ISGID)));

       case 'k':               /* File has sticky bit set? */
         unary_advance ();
         if (stat (argv[pos - 1], &stat_buf) < 0)
           return (FALSE);
         return (TRUE == (0 != (stat_buf.st_mode & S_ISVTX)));

       case 't':               /* File (fd) is a terminal?  (fd) defaults to stdout. */
         advance (0);
         if (pos < argc && isint (pos, &r))
           {
             advance (0);
             return (TRUE == (isatty ((int) r)));
           }
         return (TRUE == (isatty (1)));

       case 'n':               /* True if arg has some length. */
         unary_advance ();
         return (TRUE == (0 != strlen (argv[pos - 1])));
         break;

       case 'z':               /* True if arg has no length. */
         unary_advance ();
         return (TRUE == (0 == strlen (argv[pos - 1])));
       }
   }
 value = 0 != strlen (argv[pos]);
 advance (0);
 return value;
}

/*
* and:
*      and '-a' term
*      term
*/
static int
and ()
{
 auto int value;

 value = term ();
 while (pos < argc && '-' == argv[pos][0] && 'a' == argv[pos][1] && '\000' == argv[pos][2])
   {
     advance (0);
     value = TRUTH_AND (value, term ());
   }
 return (TRUE == value);
}

/*
* or:
*      or '-o' and
*      and
*/
static int
or ()
{
 auto int value;

 value = and ();
 while (pos < argc && '-' == argv[pos][0] && 'o' == argv[pos][1] && '\000' == argv[pos][2])
   {
     advance (0);
     value = TRUTH_OR (value, and ());
   }
 return (TRUE == value);
}

/*
* expr:
*      or
*/
int
expr ()
{
 auto int value;

 if (pos >= argc)
   beyond ();

 value = FALSE;

 return value ^ or ();         /* Same with this. */
}

/*
* [:
*      '[' expr ']'
* test:
*      test expr
*/
int
#ifdef STANDALONE
main (margc, margv)
#else
test_command (margc, margv)
#endif /* STANDALONE */
    int margc;
    char **margv;
{
 auto int value;
 int expr ();
#ifndef STANDALONE
 int code = setjmp (test_exit_buf);

 if (code)
   return (test_error_return);
#endif /* STANDALONE */

 argv = margv;

 if (margv[0] && strcmp (margv[0], "[") == 0)
   {
     --margc;

     if (margc < 2)
       test_exit (SHELL_BOOLEAN (FALSE));

     if (margv[margc] && strcmp (margv[margc], "]") != 0)
       test_syntax_error ("missing `]'\n", (char *)NULL);
   }

 argc = margc;
 pos = 1;

 if (pos >= argc)
   test_exit (SHELL_BOOLEAN (FALSE));

 value = expr ();
 if (pos != argc)
   test_syntax_error ("too many arguments\n", (char *)NULL);

 test_exit (SHELL_BOOLEAN (value));
}