diff options
Diffstat (limited to 'src/appl/bsd/setenv.c')
| -rw-r--r-- | src/appl/bsd/setenv.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/src/appl/bsd/setenv.c b/src/appl/bsd/setenv.c deleted file mode 100644 index 0191d9c8c0..0000000000 --- a/src/appl/bsd/setenv.c +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Copyright (c) 1987 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the University of California, Berkeley. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* based on @(#)setenv.c 5.2 (Berkeley) 6/27/88 */ - -#include <sys/types.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#ifdef NEED_SETENV -extern int setenv(char *, char *, int); -extern void unsetenv(char *); -#endif - -static char *_findenv(char *, int*); -/* - * setenv -- - * Set the value of the environmental variable "name" to be - * "value". If rewrite is set, replace any current value. - */ -int -setenv(name, value, rewrite) - register char *name, *value; - int rewrite; -{ - extern char **environ; - static int alloced; /* if allocated space before */ - register char *C; - int l_value, offset; - - if (*value == '=') /* no `=' in value */ - ++value; - l_value = strlen(value); - if ((C = _findenv(name, &offset))) { /* find if already exists */ - if (!rewrite) - return(0); - if (strlen(C) >= l_value) { /* old larger; copy over */ - while ((*C++ = *value++)); - return(0); - } - } - else { /* create new slot */ - register int cnt; - register char **P; - - for (P = environ, cnt = 0; *P; ++P, ++cnt); - if (alloced) { /* just increase size */ - environ = (char **)realloc((char *)environ, - (u_int)(sizeof(char *) * (cnt + 2))); - if (!environ) - return(-1); - } - else { /* get new space */ - alloced = 1; /* copy old entries into it */ - P = (char **)malloc((u_int)(sizeof(char *) * - (cnt + 2))); - if (!P) - return(-1); - memcpy(P, environ, cnt * sizeof(char *)); - environ = P; - } - environ[cnt + 1] = NULL; - offset = cnt; - } - for (C = name; *C && *C != '='; ++C); /* no `=' in name */ - if (!(environ[offset] = /* name + `=' + value */ - malloc((u_int)((int)(C - name) + l_value + 2)))) - return(-1); - for (C = environ[offset]; (*C = *name++) &&( *C != '='); ++C); - for (*C++ = '='; (*C++ = *value++);); - return(0); -} - -/* - * unsetenv(name) -- - * Delete environmental variable "name". - */ -void -unsetenv(name) - char *name; -{ - extern char **environ; - register char **P; - int offset; - - while (_findenv(name, &offset)) /* if set multiple times */ - for (P = &environ[offset];; ++P) - if (!(*P = *(P + 1))) - break; -} -/* - * Copyright (c) 1987 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the University of California, Berkeley. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -/* based on @(#)getenv.c 5.5 (Berkeley) 6/27/88 */ - -#ifndef HAVE_GETENV -/* - * getenv -- - * Returns ptr to value associated with name, if any, else NULL. - */ -char * -getenv(name) - char *name; -{ - int offset; - - return(_findenv(name, &offset)); -} -#endif - -/* - * _findenv -- - * Returns pointer to value associated with name, if any, else NULL. - * Sets offset to be the offset of the name/value combination in the - * environmental array, for use by setenv(3) and unsetenv(3). - * Explicitly removes '=' in argument name. - * - * This routine *should* be a static; don't use it. - */ -static char * -_findenv(name, offset) - register char *name; - int *offset; -{ - extern char **environ; - register unsigned int len; - register char **P, *C; - - for (C = name, len = 0; *C && *C != '='; ++C, ++len); - for (P = environ; *P; ++P) - if (!strncmp(*P, name, len)) - if (*(C = *P + len) == '=') { - *offset = P - environ; - return(++C); - } - return(NULL); -} |