reactos/rosapps/regedit/regcmds.c

/*
 *  ReactOS regedit
 *
 *  regcmds.c
 *
 *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
 *
 *  Original Work Copyright 2002 Andriy Palamarchuk
 *
 *  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 of the License, 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 program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <commctrl.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <process.h>
#include <stdio.h>
    
#include <ctype.h>
#include "regproc.h"
#include "main.h"

////////////////////////////////////////////////////////////////////////////////
// Global Variables:
//

static char *usage =
"Usage:\n"
"    regedit filename\n"
"    regedit /E filename [regpath]\n"
"    regedit /D regpath\n"
"\n"
"filename - registry file name\n"
"regpath - name of the registry key\n"
"\n"
"When is called without any switches adds contents of the specified\n"
"registry file to the registry\n"
"\n"
"Switches:\n"
"    /E - exports contents of the specified registry key to the specified\n"
"	file. Exports the whole registry if no key is specified.\n"
"    /D - deletes specified registry key\n"
"    /S - silent execution, can be used with any other switch.\n"
"	The only existing mode, exists for compatibility with Windows regedit.\n"
"    /V - advanced mode, can be used with any other switch.\n"
"	Ignored, exists for compatibility with Windows regedit.\n"
"    /L - location of system.dat file. Can be used with any other switch.\n"
"	Ignored. Exists for compatibility with Windows regedit.\n"
"    /R - location of user.dat file. Can be used with any other switch.\n"
"	Ignored. Exists for compatibility with Windows regedit.\n"
"    /? - print this help. Any other switches are ignored.\n"
"    /C - create registry from. Not implemented.\n"
"\n"
"The switches are case-insensitive, can be prefixed either by '-' or '/'.\n"
"This program is command-line compatible with Microsoft Windows\n"
"regedit. The difference with Windows regedit - this application has\n"
"command-line interface only.\n";

typedef enum {
    ACTION_UNDEF, ACTION_ADD, ACTION_EXPORT, ACTION_DELETE
} REGEDIT_ACTION;

/**
 * Process unknown switch.
 *
 * Params:
 *   chu - the switch character in upper-case.
 *   s - the command line string where s points to the switch character.
 */
void error_unknown_switch(char chu, char *s)
{
    if (isalpha(chu)) {
        printf("%s: Undefined switch /%c!\n", getAppName(), chu);
    } else {
        printf("%s: Alphabetic character is expected after '%c' "
               "in switch specification\n", getAppName(), *(s - 1));
    }
    exit(1);
}

BOOL ProcessCmdLine(LPSTR lpCmdLine)
{
    REGEDIT_ACTION action = ACTION_UNDEF;
    LPSTR s = lpCmdLine;        /* command line pointer */
    CHAR ch = *s;               /* current character */

    setAppName("regedit");
    while (ch && ((ch == '-') || (ch == '/'))) {
        char chu;
        char ch2;

        s++;
        ch = *s;
        ch2 = *(s+1);
        chu = toupper(ch);
        if (!ch2 || isspace(ch2)) {
            if (chu == 'S' || chu == 'V') {
                /* ignore these switches */
            } else {
                switch (chu) {
                case 'D':
                    action = ACTION_DELETE;
                    break;
                case 'E':
                    action = ACTION_EXPORT;
                    break;
                case '?':
                    printf(usage);
                    exit(0);
                    break;
                default:
                    error_unknown_switch(chu, s);
                    break;
                }
            }
            s++;
        } else {
            if (ch2 == ':') {
                switch (chu) {
                case 'L':
                    /* fall through */
                case 'R':
                    s += 2;
                    while (*s && !isspace(*s)) {
                        s++;
                    }
                    break;
                default:
                    error_unknown_switch(chu, s);
                    break;
                }
            } else {
                /* this is a file name, starting from '/' */
                s--;
                break;
            }
        }
        /* skip spaces to the next parameter */
        ch = *s;
        while (ch && isspace(ch)) {
            s++;
            ch = *s;
        }
    }
//    if (action == ACTION_UNDEF) {
//        action = ACTION_ADD;
//    }

    switch (action) {
    case ACTION_ADD:
    {
        CHAR filename[MAX_PATH];
        FILE *reg_file;
        get_file_name(&s, filename);
        if (!filename[0]) {
            printf("%s: No file name is specified\n%s", getAppName(), usage);
            exit(1);
        }
        while (filename[0]) {
            reg_file = fopen(filename, "r");
            if (reg_file) {
                processRegLines(reg_file, doSetValue);
            } else {
                perror("");
                printf("%s: Can't open file \"%s\"\n", getAppName(), filename);
                exit(1);
            }
            get_file_name(&s, filename);
        }
        break;
    }
    case ACTION_DELETE:
    {
        CHAR reg_key_name[KEY_MAX_LEN];
        get_file_name(&s, reg_key_name);
        if (!reg_key_name[0]) {
            printf("%s: No registry key is specified for removal\n%s", getAppName(), usage);
            exit(1);
        }
        delete_registry_key(reg_key_name);
        break;
    }
    case ACTION_EXPORT:
    {
        CHAR filename[MAX_PATH];
        filename[0] = '\0';
        get_file_name(&s, filename);
        if (!filename[0]) {
            printf("%s: No file name is specified\n%s", getAppName(), usage);
            exit(1);
        }
        if (s[0]) {
            CHAR reg_key_name[KEY_MAX_LEN];
            get_file_name(&s, reg_key_name);
            export_registry_key(filename, reg_key_name);
        } else {
            export_registry_key(filename, NULL);
        }
        break;
    }
    default:
        printf("%s: Unhandled action!\n", getAppName());
        return FALSE;
    }
    return TRUE;
}