still more changes from rick@seismo

[unix-history] / usr / src / usr.bin / uucp / libuu / getprm.c

#ifndef lint
static char sccsid[] = "@(#)getprm.c    5.4 (Berkeley) %G%";
#endif

#include "uucp.h"

#define LQUOTE  '('
#define RQUOTE ')'

/*LINTLIBRARY*/

/*
*      get next parameter from s
*
*      return - pointer to next character in s
*/

char *
getprm(s, prm)
register char *s, *prm;
{
       register char *c;

       while (*s == ' ' || *s == '\t' || *s == '\n')
               s++;

       *prm = '\0';
       if (*s == '\0')
               return NULL;

       if (*s == '>' || *s == '<' || *s == '|'
         || *s == ';' || *s == '&') {
               *prm++ = *s++;
               *prm = '\0';
               return s;
       }

       /* look for quoted argument */
       if (*s == LQUOTE) {
               if ((c = index(s + 1, RQUOTE)) != NULL) {
                       c++;
                       while (c != s)
                               *prm++ = *s++;
                       *prm = '\0';
                       return s;
               }
       }

       /* look for `  ` string */
       if (*s == '`') {
               if ((c = index(s + 1, '`')) != NULL) {
                       c++;
                       while (c != s)
                               *prm++ = *s++;
                       *prm = '\0';
                       return s;
               }
       }

       while (*s != ' ' && *s != '\t' && *s != '<'
               && *s != '>' && *s != '|' && *s != '\0'
               && *s != '&' && *s != ';' && *s != '\n')
               *prm++ = *s++;
       *prm = '\0';

       return s;
}