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- /*
- (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
- See the copyright notice in the ACK home directory, in the file "Copyright".
- */
- /*
- Module: Access to program arguments and environment
- Author: Ceriel J.H. Jacobs
- Version: $Id$
- */
- extern char **argv, **environ;
- extern int argc;
- unsigned int _Arguments__Argc;
- static char *
- findname(s1, s2)
- register char *s1, *s2;
- {
- while (*s1 == *s2++) s1++;
- if (*s1 == '\0' && *(s2-1) == '=') return s2;
- return 0;
- }
- static unsigned int
- scopy(src, dst, max)
- register char *src, *dst;
- unsigned int max;
- {
- register unsigned int i = 0;
- while (*src && i <= max) {
- i++;
- *dst++ = *src++;
- }
- if (i <= max) {
- *dst = '\0';
- return i+1;
- }
- while (*src++) i++;
- return i + 1;
- }
- _Arguments_()
- {
- _Arguments__Argc = argc;
- }
- unsigned
- _Arguments__Argv(n, argument, l, u, s)
- unsigned int u;
- char *argument;
- {
- if (n >= argc) return 0;
- return scopy(argv[n], argument, u);
- }
- unsigned
- _Arguments__GetEnv(name, nn, nu, ns, value, l, u, s)
- char *name, *value;
- unsigned int nu, u;
- {
- register char **p = environ;
- register char *v = 0;
- while (*p && !(v = findname(name, *p++))) {
- /* nothing */
- }
- if (!v) return 0;
- return scopy(v, value, u);
- }
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