2.9BSD - /usr/src/cmd/sh/string.c

   1: #
   2: /*
   3:  * UNIX shell
   4:  *
   5:  * S. R. Bourne
   6:  * Bell Telephone Laboratories
   7:  *
   8:  */
   9: 
  10: #include    "defs.h"
  11: 
  12: 
  13: /* ========	general purpose string handling ======== */
  14: 
  15: 
  16: STRING  movstr(a,b)
  17:     REG STRING  a, b;
  18: {
  19:     WHILE *b++ = *a++ DONE
  20:     return(--b);
  21: }
  22: 
  23: INT any(c,s)
  24:     REG CHAR    c;
  25:     STRING      s;
  26: {
  27:     REG CHAR d;
  28: 
  29:     WHILE d = *s++
  30:     DO  IF d==c
  31:         THEN    return(TRUE);
  32:         FI
  33:     OD
  34:     return(FALSE);
  35: }
  36: 
  37: INT cf(s1, s2)
  38:     REG STRING s1, s2;
  39: {
  40:     WHILE *s1++ == *s2
  41:     DO  IF *s2++==0
  42:         THEN    return(0);
  43:         FI
  44:     OD
  45:     return(*--s1 - *s2);
  46: }
  47: 
  48: INT length(as)
  49:     STRING as;
  50: {
  51:     REG STRING s;
  52: 
  53:     IF s=as THEN WHILE *s++ DONE FI
  54:     return(s-as);
  55: }

Defined functions