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depend.c

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Netscape Portable Runtime (NSPR).
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998-2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/***********************************************************************
**  1996 - Netscape Communications Corporation
**
**
** Name:          depend.c
** Description: Test to enumerate the dependencies
*
** Modification History:
** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
**             The debug mode will print all of the printfs associated with this test.
**                 The regress mode will be the default mode. Since the regress tool limits
**           the output to a one line status:PASS or FAIL,all of the printf statements
**                 have been handled with an if (debug_mode) statement. 
***********************************************************************/
#include "prinit.h"

/***********************************************************************
** Includes
***********************************************************************/
/* Used to get the command line option */
#include "plgetopt.h"

#include <stdio.h>
#include <stdlib.h>

static void PrintVersion(
    const char *msg, const PRVersion* info, PRIntn tab)
{
    static const len = 20;
    static const char *tabs = {"                    "};

    tab *= 2;
    if (tab > len) tab = len;
    printf("%s", &tabs[len - tab]);
    printf("%s ", msg);
    printf("%s ", info->id);
    printf("%d.%d", info->major, info->minor);
    if (0 != info->patch)
        printf(".p%d", info->patch);
    printf("\n");
}  /* PrintDependency */

static void ChaseDependents(const PRVersionInfo *info, PRIntn tab)
{
    PrintVersion("exports", &info->selfExport, tab);
    if (NULL != info->importEnumerator)
    {
        const PRDependencyInfo *dependent = NULL;
        while (NULL != (dependent = info->importEnumerator(dependent)))
        {
            const PRVersionInfo *import = dependent->exportInfoFn();
            PrintVersion("imports", &dependent->importNeeded, tab);
            ChaseDependents(import, tab + 1);
        }
    }
}  /* ChaseDependents */

static PRVersionInfo hack_export;
static PRVersionInfo dummy_export;
static PRDependencyInfo dummy_imports[2];

static const PRVersionInfo *HackExportInfo(void)
{
    hack_export.selfExport.major = 11;
    hack_export.selfExport.minor = 10;
    hack_export.selfExport.patch = 200;
    hack_export.selfExport.id = "Hack";
    hack_export.importEnumerator = NULL;
    return &hack_export;
}

static const PRDependencyInfo *DummyImports(
    const PRDependencyInfo *previous)
{
    if (NULL == previous) return &dummy_imports[0];
    else if (&dummy_imports[0] == previous) return &dummy_imports[1];
    else if (&dummy_imports[1] == previous) return NULL;
}  /* DummyImports */

static const PRVersionInfo *DummyLibVersion(void)
{
    dummy_export.selfExport.major = 1;
    dummy_export.selfExport.minor = 0;
    dummy_export.selfExport.patch = 0;
    dummy_export.selfExport.id = "Dumbass application";
    dummy_export.importEnumerator = DummyImports;

    dummy_imports[0].importNeeded.major = 2;
    dummy_imports[0].importNeeded.minor = 0;
    dummy_imports[0].importNeeded.patch = 0;
    dummy_imports[0].importNeeded.id = "Netscape Portable Runtime";
    dummy_imports[0].exportInfoFn = PR_ExportInfo;

    dummy_imports[1].importNeeded.major = 5;
    dummy_imports[1].importNeeded.minor = 1;
    dummy_imports[1].importNeeded.patch = 2;
    dummy_imports[1].importNeeded.id = "Hack Library";
    dummy_imports[1].exportInfoFn = HackExportInfo;

    return &dummy_export;
}  /* DummyLibVersion */

int main(int argc, char **argv)
{
    PRIntn tab = 0;
    const PRVersionInfo *info = DummyLibVersion();
    const char *buildDate = __DATE__, *buildTime = __TIME__;

    printf("Depend.c build time is %s %s\n", buildDate, buildTime);
    
    if (NULL != info) ChaseDependents(info, tab);

    return 0;
}  /* main */

/* depend.c */

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