reactos/boot/freeldr/freeldr/oslist.c

97 lines
3 KiB
C

/*
* FreeLoader
* Copyright (C) 1998-2003 Brian Palmer <brianp@sginet.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* INCLUDES *******************************************************************/
#include <freeldr.h>
#define TAG_STRING ' rtS'
#define TAG_OS_ITEM 'tISO'
/* FUNCTIONS ******************************************************************/
static PCSTR CopyString(PCSTR Source)
{
PSTR Dest;
if (!Source)
return NULL;
Dest = FrLdrHeapAlloc(strlen(Source) + 1, TAG_STRING);
if (Dest)
strcpy(Dest, Source);
return Dest;
}
OperatingSystemItem* InitOperatingSystemList(ULONG* OperatingSystemCountPointer)
{
ULONG Idx;
CHAR SettingName[260];
CHAR SettingValue[260];
ULONG_PTR SectionId;
PCHAR TitleStart, TitleEnd;
PCSTR OsLoadOptions;
ULONG Count;
OperatingSystemItem* Items;
/* Open the [FreeLoader] section */
if (!IniOpenSection("Operating Systems", &SectionId))
return NULL;
/* Count number of operating systems in the section */
Count = IniGetNumSectionItems(SectionId);
/* Allocate memory to hold operating system lists */
Items = FrLdrHeapAlloc(Count * sizeof(OperatingSystemItem), TAG_OS_ITEM);
if (!Items)
return NULL;
/* Now loop through and read the operating system section and display names */
for (Idx = 0; Idx < Count; Idx++)
{
IniReadSettingByNumber(SectionId, Idx, SettingName, sizeof(SettingName), SettingValue, sizeof(SettingValue));
/* Search start and end of the title */
OsLoadOptions = NULL;
TitleStart = SettingValue;
while (*TitleStart == ' ' || *TitleStart == '"')
TitleStart++;
TitleEnd = TitleStart;
if (*TitleEnd != ANSI_NULL)
TitleEnd++;
while (*TitleEnd != ANSI_NULL && *TitleEnd != '"')
TitleEnd++;
if (*TitleEnd != ANSI_NULL)
{
*TitleEnd = ANSI_NULL;
OsLoadOptions = TitleEnd + 1;
}
/* Copy the system partition, identifier and options */
Items[Idx].SystemPartition = CopyString(SettingName);
Items[Idx].LoadIdentifier = CopyString(TitleStart);
Items[Idx].OsLoadOptions = CopyString(OsLoadOptions);
}
/* Return success */
*OperatingSystemCountPointer = Count;
return Items;
}