Sweden-Number/programs/regedit/regedit.c

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/*
* Windows regedit.exe registry editor implementation.
*
* Copyright 2002 Andriy Palamarchuk
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <ctype.h>
#include <stdio.h>
#include <windows.h>
#include "regproc.h"
static char *usage =
"Usage:
regedit filename
regedit /E filename [regpath]
regedit /D regpath
filename - registry file name
regpath - name of the registry key
When is called without any switches adds contents of the specified
registry file to the registry
Switches:
/E - exports contents of the specified registry key to the specified
file. Exports the whole registry if no key is specified.
/D - deletes specified registry key
/S - silent execution, can be used with any other switch.
The only existing mode, exists for compatibility with Windows regedit.
/V - advanced mode, can be used with any other switch.
Ignored, exists for compatibility with Windows regedit.
/L - location of system.dat file. Can be used with any other switch.
Ignored. Exists for compatibility with Windows regedit.
/R - location of user.dat file. Can be used with any other switch.
Ignored. Exists for compatibility with Windows regedit.
/? - print this help. Any other switches are ignored.
/C - create registry from. Not implemented.
The switches are case-insensitive, can be prefixed either by '-' or '/'.
This program is command-line compatible with Microsoft Windows
regedit. The difference with Windows regedit - this application has
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);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
REGEDIT_ACTION action = ACTION_UNDEF;
LPSTR s = lpCmdLine; /* command line pointer */
CHAR ch = *s; /* current character */
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setAppName("regedit");
while (ch && ((ch == '-') || (ch == '/')))
{
char chu;
char ch2;
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s++;
ch = *s;
ch2 = *(s+1);
chu = toupper(ch);
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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());
exit(1);
break;
}
return 0;
}