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/*
Copyright (C) 2008-2009, Gabriel Dos Reis.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
- Neither the name of The Numerical ALgorithms Group Ltd. nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This program is a driver for the OpenAxiom core executable.
It pretends to be the OpenAxiom interpreter when, in fact, the actual
work is done by the Core Executable. It also occasionally masquerades
as the session manager. */
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <locale.h>
#include "cfuns.h"
#include "utils.h"
#define OPENAXIOM_GLOBAL_ENV "AXIOM"
/* Publish the system exec prefix for use by sub-processes. */
static void
publish_systemdir(const char* dir)
{
if (!oa_setenv(OPENAXIOM_GLOBAL_ENV, dir)) {
perror("publish_systemdir");
abort();
}
}
static void
augment_variable(const char* name, const char* value) {
const char* oldval = oa_getenv(name);
const int value_length = strlen(value);
const int oldval_length = oldval == 0 ? 0 : strlen(oldval);
const int newval_length = value_length + 1 + oldval_length;
char* newval = (char*) malloc(newval_length + 1);
strcpy(newval,value);
if (oldval != 0) {
newval[value_length] = openaxiom_ifs;
strcpy(newval + value_length + 1, oldval);
}
if (!oa_setenv(name, newval))
perror("oa_augment_environment_variable");
}
static void
upgrade_environment(const char* sysdir) {
augment_variable("TEXINPUTS",
oa_concatenate_string(sysdir, OPENAXIOM_TEXINPUTS_PATH));
augment_variable("BIBINPUTS",
oa_concatenate_string(sysdir, OPENAXIOM_BIBINPUTS_PATH));
publish_systemdir(sysdir);
}
int
main(int argc, char* argv[])
{
openaxiom_command command = { };
openaxiom_driver driver =
openaxiom_preprocess_arguments(&command, argc, argv);
upgrade_environment(command.root_dir);
switch (driver) {
case openaxiom_null_driver:
return 0; /* Bye. */
case openaxiom_core_driver:
case openaxiom_script_driver:
case openaxiom_compiler_driver:
putenv("LC_ALL=C");
setlocale(LC_ALL, "");
return openaxiom_execute_core(&command, driver);
case openaxiom_execute_driver:
return oa_spawn(&command.core,
openaxiom_spawn_flags
(openaxiom_spawn_search_path | openaxiom_spawn_replace));
case openaxiom_sman_driver:
break;
default:
abort();
}
#ifdef __WIN32__
/* Should not happen on MS platforms. */
abort();
#else /* __WIN32__ */
execv(openaxiom_make_path_for(command.root_dir, openaxiom_sman_driver),
argv);
perror(strerror(errno));
return -1;
#endif /* __WIN32__ */
}
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