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19468effd0
* Makefile.am (EXTRA_libguile_la_SOURCES): add putenv.c. * configure.in: move putenv from AC_CHECK_FUNCS to AC_REPLACE_FUNCS. * putenv.c: new file, from sh-utils 1.12. * posix.c (scm_environ): use malloc in place of scm_must_malloc since allocation isn't for Scheme objects. (scm_putenv): copy strings before placing in the environment. * stime.c (scm_current_time): throw an error if time returns -1, instead of returning #f. (scm_get_internal_real_time, scm_get_internal_real_time): use scm_long2num for return value instead of SCM_MAKINUM. * stime.h: prototypes updated. * stime.c (scm_time_in_msec): apparently unused, deleted. * configure.in: check for gettimeofday. * stime.c (scm_time_plus_ticks): new procedure, an scsh interface which may be more usefully portable than a gettimeofday interface. * stime.c (filltime): recovered static procedure. (scm_localtime, scm_gmtime, scm_mktime, scm_tzset): recovered from an earlier Guile. * posix.h: add prototype for scm_close_pipe, remove prototypes for scm_open_input_pipe, scm_open_output_pipe, change scm_mknod prototype. * * posix.c (scm_mknod): split the mode argument into type and perms arguments, like the extra fields returned by stat. * fports.c (scm_pipob): set the close, free and print procedures. (scm_close_pipe): new procedure. * posix.c (scm_open_input_pipe, scm_open_output_pipe): deleted, define them in boot-9.scm
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* Copyright (C) 1991 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/types.h>
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#include <errno.h>
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#ifndef errno
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extern int errno;
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#endif
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/* Don't include stdlib.h for non-GNU C libraries because some of them
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contain conflicting prototypes for getopt.
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This needs to come after some library #include
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to get __GNU_LIBRARY__ defined. */
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#ifdef __GNU_LIBRARY__
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#include <stdlib.h>
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#else
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char *malloc ();
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#endif /* GNU C library. */
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#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
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#include <string.h>
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#else
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#include <strings.h>
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#ifndef strchr
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#define strchr index
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#endif
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#ifndef memcpy
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#define memcpy(d, s, n) bcopy((s), (d), (n))
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#endif
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifndef NULL
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#define NULL 0
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#endif
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extern char **environ;
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/* Put STRING, which is of the form "NAME=VALUE", in the environment. */
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int
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putenv (string)
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const char *string;
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{
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char *name_end = strchr (string, '=');
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register size_t size;
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register char **ep;
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if (name_end == NULL)
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{
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/* Remove the variable from the environment. */
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size = strlen (string);
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for (ep = environ; *ep != NULL; ++ep)
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if (!strncmp (*ep, string, size) && (*ep)[size] == '=')
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{
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while (ep[1] != NULL)
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{
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ep[0] = ep[1];
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++ep;
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}
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*ep = NULL;
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return 0;
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}
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}
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size = 0;
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for (ep = environ; *ep != NULL; ++ep)
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if (!strncmp (*ep, string, name_end - string) &&
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(*ep)[name_end - string] == '=')
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break;
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else
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++size;
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if (*ep == NULL)
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{
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static char **last_environ = NULL;
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char **new_environ = (char **) malloc ((size + 2) * sizeof (char *));
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if (new_environ == NULL)
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return -1;
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memcpy ((char *) new_environ, (char *) environ, size * sizeof (char *));
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new_environ[size] = (char *) string;
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new_environ[size + 1] = NULL;
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if (last_environ != NULL)
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free ((char *) last_environ);
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last_environ = new_environ;
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environ = new_environ;
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}
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else
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*ep = (char *) string;
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return 0;
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}
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