BSD 4_3_Net_2 release

[unix-history] / usr / src / usr.bin / pascal / src / subr.c

/*-
* Copyright (c) 1980 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.
*/

#ifndef lint
static char sccsid[] = "@(#)subr.c      5.3 (Berkeley) 4/16/91";
#endif /* not lint */

#include "whoami.h"
#include "0.h"

#ifndef PI1
/*
* Does the string fp end in '.' and the character c ?
*/
dotted(fp, c)
       register char *fp;
       char c;
{
       register int i;

       i = strlen(fp);
       return (i > 1 && fp[i - 2] == '.' && fp[i - 1] == c);
}

/*
* Toggle the option c.
*/
togopt(c)
       char c;
{
       register char *tp;

       tp = &opt( c );
       *tp = 1 - *tp;
}

/*
* Set the time vector "tvec" to the
* modification time stamp of a file.
*/
gettime( filename )
   char *filename;
{
#include <sys/stat.h>
       struct stat stb;

       stat(filename, &stb);
       tvec = stb.st_mtime;
}

/*
* Convert a "ctime" into a Pascal styple time line
*/
char *
myctime(tv)
       int *tv;
{
       register char *cp, *dp;
       extern char *ctime();
       char *cpp;
       static char mycbuf[26];

       cpp = ctime(tv);
       dp = mycbuf;
       cp = cpp;
       cpp[16] = 0;
       while (*dp++ = *cp++);
       dp--;
       cp = cpp+19;
       cpp[24] = 0;
       while (*dp++ = *cp++);
       return (mycbuf);
}

/*
* Is "fp" in the command line list of names ?
*/
inpflist(fp)
       char *fp;
{
       register i;
       register char **pfp;

       pfp = pflist;
       for (i = pflstc; i > 0; i--)
               if (pstrcmp(fp, *pfp++) == 0)
                       return (1);
       return (0);
}
#endif

/*
* Boom!
*/
Perror(file, error)
       char *file, *error;
{

       fprintf( stderr , "%s: %s\n" , file , error );
}

int *
pcalloc(num, size)
       int num, size;
{
       register int *p1, *p2, nbyte;

       nbyte = (num*size+( ( sizeof ( int ) ) - 1 ) ) & ~( ( sizeof ( int ) ) - 1 );
       if ((p1 = (int *) malloc((unsigned) nbyte)) == 0)
               return (0);
       p2 =  p1;
       nbyte /= sizeof ( int );
       do {
               *p2++ = 0;
       } while (--nbyte);
       return (p1);
}

/*
* Compare strings:  s1>s2: >0  s1==s2: 0  s1<s2: <0
*/
pstrcmp(s1, s2)
       register char *s1, *s2;
{

       while (*s1 == *s2++)
               if (*s1++=='\0')
                       return (0);
       return (*s1 - *--s2);
}

/*
* Copy string s2 to s1.
* S1 must be large enough.
* Return s1.
*/
char *
pstrcpy(s1, s2)
       register char *s1, *s2;
{
       register char *os1;

       os1 = s1;
       while (*s1++ = *s2++)
               continue;
       return (os1);
}

/*
* Strlen is currently a freebie of perror
* Take the length of a string.
* Note that this does not include the trailing null!
strlen(cp)
       register char *cp;
{
       register int i;

       for (i = 0; *cp != 0; cp++)
               i++;
       return (i);
}
*/
copy(to, from, bytes)
       register char *to, *from;
       register int bytes;
{

       if (bytes != 0)
               do
                       *to++ = *from++;
               while (--bytes);
}

/*
* Is ch one of the characters in the string cp ?
*/
any(cp, ch)
       register char *cp;
       char ch;
{

       while (*cp)
               if (*cp++ == ch)
                       return (1);
       return (0);
}

opush(c)
       register CHAR c;
{

       c -= 'A';
       optstk[c] <<= 1;
       optstk[c] |= opts[c];
       opts[c] = 1;
#ifdef PI0
       send(ROPUSH, c);
#endif
}

opop(c)
       register CHAR c;
{

       c -= 'A';
       opts[c] = optstk[c] & 1;
       optstk[c] >>= 1;
#ifdef PI0
       send(ROPOP, c);
#endif
}