BSD 4_1c_2 release

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

static char sccsid[] = "@(#)getprm.c    4.1     (Berkeley)      9/11/82";

       /*  getprm 3.1  10/26/79  11:26:56  */

#include <stdio.h>

#define LQUOTE  '('
#define RQUOTE ')'
#define NOSYSPART       0
#define HASSYSPART      1

/*******
*      char *
*      getprm(s, prm)  get next parameter from s
*      char *s, *prm;
*
*      return - pointer to next character in s
*/

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

       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);
}

/***
*      split(name, sys, rest)  split into system and file part
*      char *name, *sys, *rest;
*
*      return codes:
*              NOSYSPART
*              HASSYSPART
*/

split(name, sys, rest)
char *name, *sys, *rest;
{
       char *c, *index();
       int i;

       if (*name == LQUOTE) {
               if ((c = index(name + 1, RQUOTE)) != NULL) {
               /* strip off quotes */
                       name++;
                       while (c != name)
                               *rest++ = *name++;
                       *rest = '\0';
                       *sys = '\0';
                       return(NOSYSPART);
               }
       }

       if ((c = index(name, '!')) == NULL) {
               strcpy(rest, name);
               *sys = '\0';
               return(NOSYSPART);
       }

       *c = '\0';
       for (i = 0; i < 7; i++)
               if ((*sys++ = *name++) == '\0')
                       break;

       strcpy(rest, ++c);
       return(HASSYSPART);
}