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/* Copyright (C) 1990-1999 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
/* "scmmain.c" main() for SCM.
Author: Aubrey Jaffer */
#include "scm.h"
#include "patchlvl.h"
#ifndef GENERIC_NAME
# define GENERIC_NAME "scm"
#endif
#ifndef INIT_GETENV
# define INIT_GETENV "SCM_INIT_PATH"
#endif
char *scm_find_implpath(execpath)
char *execpath;
{
char *implpath = 0;
#ifndef nosve
char *getenvpath = getenv(INIT_GETENV);
/* fprintf(stderr, "%s=%s\n", INIT_GETENV, getenvpath); fflush(stderr); */
if (getenvpath) implpath = scm_cat_path(0L, getenvpath, 0L);
if (implpath) {/* The value of the environment variable supersedes
other locations, only if the file exists. */
implpath = scm_try_path(implpath);
if (!implpath) {
fputs("Value of "INIT_GETENV" (=\"", stderr);
fputs(getenvpath, stderr);
fputs("\") not found; Trying elsewhere\n", stderr);
}
}
#endif
if (!implpath && execpath)
implpath = find_impl_file(execpath, GENERIC_NAME, INIT_FILE_NAME, dirsep);
#ifdef IMPLINIT
if (!implpath) implpath = scm_cat_path(0L, IMPLINIT, 0L);
#endif
return implpath;
}
char *generic_name[] = { GENERIC_NAME };
int main(argc, argv)
int argc;
char **argv;
{
char *script_arg = 0; /* location of SCSH style script file or 0. */
char *implpath = 0, **nargv;
int nargc, iverbose = 0, buf0stdin;
int freeall = 1; /* Free storage when we're done. */
SCM retval;
/* {char ** argvv = argv; */
/* for (;*argvv;argvv++) {fputs(*argvv,stderr); fputs(" ",stderr);} */
/* fputs("\n",stderr);} */
if (0==argc) {argc = 1; argv = generic_name;} /* for macintosh */
#ifndef LACK_SBRK
init_sbrk(); /* Do this before malloc()s. */
#endif
execpath = 0; /* even when dumped */
if ((nargv = script_process_argv(argc, argv))) { /* SCSH style scripts */
script_arg = argv[2]; /* Save for scm_find_execpath() call */
nargc = script_count_argv(nargv);
}
else {nargv = argv; nargc = argc;}
/* execpath must be set to executable's path in order to use DUMP or DLD. */
execpath = scm_find_execpath(nargc, nargv, script_arg);
implpath = scm_find_implpath(execpath);
if (isatty(fileno(stdin)) && isatty(fileno(stdout)))
iverbose = (nargc <= 1) ? 2 : 1;
buf0stdin = init_buf0(stdin);
do { /* You must call scm_init_from_argv()
or init_scm() to initialize SCM */
scm_init_from_argv(nargc, nargv, script_arg, iverbose, buf0stdin);
init_signals(); /* signals are optional */
/* Now we are ready to run Scheme code! */
retval = scm_top_level(implpath, 0L);
restore_signals(); /* signals are optional */
/* final_scm() when you are done with SCM. */
if (retval) break;
dumped = 0;
if (2 <= iverbose) fputs(";RESTART\n", stderr);
final_scm(!0);
} while (!0);
final_scm(
#ifdef CAREFUL_INTS
1
#else
freeall || (2 <= verbose)
#endif
);
if (2 <= iverbose) fputs(";EXIT\n", stderr);
fflush(stderr);
if (implpath) free(implpath);
if (execpath) free(execpath);
execpath = 0;
return (int)INUM(retval);
}
/* init_user_scm() is called by the scheme procedure
SCM_INIT_EXTENSIONS in "Init5xx.scm" */
void init_user_scm()
{
/* Put calls to your C initialization routines here. */
}
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