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Datei: main.c Sprache: C

/*
* Copyright (c) 1995, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.  Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/

/*
* This file contains the main entry point into the launcher code
* this is the only file which will be repeatedly compiled by other
* tools. The rest of the files will be linked in.
*/

#include "defines.h"
#include "jli_util.h"
#include "jni.h"

/*
* Entry point.
*/
#ifdef JAVAW

char **__initenv;

int WINAPI
WinMain(HINSTANCE inst, HINSTANCE previnst, LPSTR cmdline, int cmdshow)
{
    int margc;
    char** margv;
    int jargc;
    char** jargv;
    const jboolean const_javaw = JNI_TRUE;

    __initenv = _environ;

#else /* JAVAW */
JNIEXPORT int
main(int argc, char **argv)
{
    int margc;
    char** margv;
    int jargc;
    char** jargv;
    const jboolean const_javaw = JNI_FALSE;
#endif /* JAVAW */
    {
        int i, main_jargc, extra_jargc;
        JLI_List list;

        main_jargc = (sizeof(const_jargs) / sizeof(char *)) > 1
            ? sizeof(const_jargs) / sizeof(char *)
            : 0; // ignore the null terminator index

        extra_jargc = (sizeof(const_extra_jargs) / sizeof(char *)) > 1
            ? sizeof(const_extra_jargs) / sizeof(char *)
            : 0; // ignore the null terminator index

        if (main_jargc > 0 && extra_jargc > 0) { // combine extra java args
            jargc = main_jargc + extra_jargc;
            list = JLI_List_new(jargc + 1);

            for (i = 0 ; i < extra_jargc; i++) {
                JLI_List_add(list, JLI_StringDup(const_extra_jargs[i]));
            }

            for (i = 0 ; i < main_jargc ; i++) {
                JLI_List_add(list, JLI_StringDup(const_jargs[i]));
            }

            // terminate the list
            JLI_List_add(list, NULL);
            jargv = list->elements;
         } else if (extra_jargc > 0) { // should never happen
            fprintf(stderr, "EXTRA_JAVA_ARGS defined without JAVA_ARGS");
            abort();
         } else { // no extra args, business as usual
            jargc = main_jargc;
            jargv = (char **) const_jargs;
         }
    }

    JLI_InitArgProcessing(jargc > 0, const_disable_argfile);

#ifdef _WIN32
    {
        int i = 0;
        if (getenv(JLDEBUG_ENV_ENTRY) != NULL) {
            printf("Windows original main args:\n");
            for (i = 0 ; i < __argc ; i++) {
                printf("wwwd_args[%d] = %s\n", i, __argv[i]);
            }
        }
    }
    JLI_CmdToArgs(GetCommandLine());
    margc = JLI_GetStdArgc();
    // add one more to mark the end
    margv = (char **)JLI_MemAlloc((margc + 1) * (sizeof(char *)));
    {
        int i = 0;
        StdArg *stdargs = JLI_GetStdArgs();
        for (i = 0 ; i < margc ; i++) {
            margv[i] = stdargs[i].arg;
        }
        margv[i] = NULL;
    }
#else /* *NIXES */
    {
        // accommodate the NULL at the end
        JLI_List args = JLI_List_new(argc + 1);
        int i = 0;

        // Add first arg, which is the app name
        JLI_List_add(args, JLI_StringDup(argv[0]));
        // Append JDK_JAVA_OPTIONS
        if (JLI_AddArgsFromEnvVar(args, JDK_JAVA_OPTIONS)) {
            // JLI_SetTraceLauncher is not called yet
            // Show _JAVA_OPTIONS content along with JDK_JAVA_OPTIONS to aid diagnosis
            if (getenv(JLDEBUG_ENV_ENTRY)) {
                char *tmp = getenv("_JAVA_OPTIONS");
                if (NULL != tmp) {
                    JLI_ReportMessage(ARG_INFO_ENVVAR, "_JAVA_OPTIONS", tmp);
                }
            }
        }
        // Iterate the rest of command line
        for (i = 1; i < argc; i++) {
            JLI_List argsInFile = JLI_PreprocessArg(argv[i], JNI_TRUE);
            if (NULL == argsInFile) {
                JLI_List_add(args, JLI_StringDup(argv[i]));
            } else {
                int cnt, idx;
                cnt = argsInFile->size;
                for (idx = 0; idx < cnt; idx++) {
                    JLI_List_add(args, argsInFile->elements[idx]);
                }
                // Shallow free, we reuse the string to avoid copy
                JLI_MemFree(argsInFile->elements);
                JLI_MemFree(argsInFile);
            }
        }
        margc = args->size;
        // add the NULL pointer at argv[argc]
        JLI_List_add(args, NULL);
        margv = args->elements;
    }
#endif /* WIN32 */
    return JLI_Launch(margc, margv,
                   jargc, (const char**) jargv,
                   0, NULL,
                   VERSION_STRING,
                   DOT_VERSION,
                   (const_progname != NULL) ? const_progname : *margv,
                   (const_launcher != NULL) ? const_launcher : *margv,
                   jargc > 0,
                   const_cpwildcard, const_javaw, 0);
}

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