reactos/lib/newinflib/infput.c

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/*
* PROJECT: .inf file parser
* LICENSE: GPL - See COPYING in the top level directory
* COPYRIGHT: Copyright 2005 Ge van Geldorp <gvg@reactos.org>
*/
/* INCLUDES *****************************************************************/
#include "inflib.h"
#define NDEBUG
#include <debug.h>
#define EOL L"\r\n"
#define SIZE_INC 1024
typedef struct _OUTPUTBUFFER
{
PWCHAR Buffer;
PWCHAR Current;
ULONG TotalSize;
ULONG FreeSize;
INFSTATUS Status;
} OUTPUTBUFFER, *POUTPUTBUFFER;
static void
Output(POUTPUTBUFFER OutBuf, PCWSTR Text)
{
ULONG Length;
PWCHAR NewBuf;
ULONG NewSize;
/* Skip mode? */
if (! INF_SUCCESS(OutBuf->Status))
{
return;
}
/* Doesn't fit? */
Length = (ULONG)strlenW(Text) * sizeof(WCHAR);
if (OutBuf->FreeSize < Length + 1 && INF_SUCCESS(OutBuf->Status))
{
DPRINT("Out of free space. TotalSize %u FreeSize %u Length %u\n",
(UINT)OutBuf->TotalSize, (UINT)OutBuf->FreeSize, (UINT)Length);
/* Round up to next SIZE_INC */
NewSize = OutBuf->TotalSize +
(((Length + 1) - OutBuf->FreeSize + (SIZE_INC - 1)) /
SIZE_INC) * SIZE_INC;
DPRINT("NewSize %u\n", (UINT)NewSize);
NewBuf = MALLOC(NewSize);
/* Abort if failed */
if (NULL == NewBuf)
{
DPRINT1("MALLOC() failed\n");
OutBuf->Status = INF_STATUS_NO_MEMORY;
return;
}
/* Need to copy old contents? */
if (NULL != OutBuf->Buffer)
{
DPRINT("Copying %u bytes from old content\n",
(UINT)(OutBuf->TotalSize - OutBuf->FreeSize));
MEMCPY(NewBuf, OutBuf->Buffer, OutBuf->TotalSize - OutBuf->FreeSize);
OutBuf->Current = NewBuf + (OutBuf->Current - OutBuf->Buffer);
FREE(OutBuf->Buffer);
}
else
{
OutBuf->Current = NewBuf;
}
OutBuf->Buffer = NewBuf;
OutBuf->FreeSize += NewSize - OutBuf->TotalSize;
OutBuf->TotalSize = NewSize;
DPRINT("After reallocation TotalSize %u FreeSize %u\n",
(UINT)OutBuf->TotalSize, (UINT)OutBuf->FreeSize);
}
/* We're guaranteed to have enough room now. Copy char by char because of
possible "conversion" from Unicode to Ansi */
while (Length--)
{
*OutBuf->Current++ = *Text++;
OutBuf->FreeSize--;
}
*OutBuf->Current = '\0';
}
INFSTATUS
InfpBuildFileBuffer(PINFCACHE Cache,
PWCHAR *Buffer,
PULONG BufferSize)
{
OUTPUTBUFFER OutBuf;
PINFCACHESECTION CacheSection;
PINFCACHELINE CacheLine;
PINFCACHEFIELD CacheField;
PWCHAR p;
BOOLEAN NeedQuotes;
OutBuf.Buffer = NULL;
OutBuf.Current = NULL;
OutBuf.FreeSize = 0;
OutBuf.TotalSize = 0;
OutBuf.Status = INF_STATUS_SUCCESS;
/* Iterate through list of sections */
CacheSection = Cache->FirstSection;
while (CacheSection != NULL)
{
DPRINT("Processing section %S\n", CacheSection->Name);
if (CacheSection != Cache->FirstSection)
{
Output(&OutBuf, EOL);
}
Output(&OutBuf, L"[");
Output(&OutBuf, CacheSection->Name);
Output(&OutBuf, L"]");
Output(&OutBuf, EOL);
/* Iterate through list of lines */
CacheLine = CacheSection->FirstLine;
while (CacheLine != NULL)
{
if (NULL != CacheLine->Key)
{
DPRINT("Line with key %S\n", CacheLine->Key);
Output(&OutBuf, CacheLine->Key);
Output(&OutBuf, L" = ");
}
else
{
DPRINT("Line without key\n");
}
/* Iterate through list of lines */
CacheField = CacheLine->FirstField;
while (CacheField != NULL)
{
if (CacheField != CacheLine->FirstField)
{
Output(&OutBuf, L",");
}
p = CacheField->Data;
NeedQuotes = FALSE;
while (L'\0' != *p && ! NeedQuotes)
{
NeedQuotes = (BOOLEAN)(L',' == *p || L';' == *p ||
L'\\' == *p);
p++;
}
if (NeedQuotes)
{
Output(&OutBuf, L"\"");
Output(&OutBuf, CacheField->Data);
Output(&OutBuf, L"\"");
}
else
{
Output(&OutBuf, CacheField->Data);
}
/* Get the next field */
CacheField = CacheField->Next;
}
Output(&OutBuf, EOL);
/* Get the next line */
CacheLine = CacheLine->Next;
}
/* Get the next section */
CacheSection = CacheSection->Next;
}
if (INF_SUCCESS(OutBuf.Status))
{
*Buffer = OutBuf.Buffer;
*BufferSize = OutBuf.TotalSize - OutBuf.FreeSize;
}
else if (NULL != OutBuf.Buffer)
{
FREE(OutBuf.Buffer);
}
return INF_STATUS_SUCCESS;
}
INFSTATUS
InfpFindOrAddSection(PINFCACHE Cache,
PCWSTR Section,
PINFCONTEXT *Context)
{
DPRINT("InfpFindOrAddSection section %S\n", Section);
*Context = MALLOC(sizeof(INFCONTEXT));
if (NULL == *Context)
{
DPRINT1("MALLOC() failed\n");
return INF_STATUS_NO_MEMORY;
}
(*Context)->Inf = Cache;
(*Context)->Section = InfpFindSection(Cache, Section);
(*Context)->Line = NULL;
if (NULL == (*Context)->Section)
{
DPRINT("Section not found, creating it\n");
(*Context)->Section = InfpAddSection(Cache, Section);
if (NULL == (*Context)->Section)
{
DPRINT("Failed to create section\n");
FREE(*Context);
return INF_STATUS_NO_MEMORY;
}
}
return INF_STATUS_SUCCESS;
}
INFSTATUS
InfpAddLineWithKey(PINFCONTEXT Context, PCWSTR Key)
{
if (NULL == Context)
{
DPRINT1("Invalid parameter\n");
return INF_STATUS_INVALID_PARAMETER;
}
Context->Line = InfpAddLine(Context->Section);
if (NULL == Context->Line)
{
DPRINT("Failed to create line\n");
return INF_STATUS_NO_MEMORY;
}
if (NULL != Key && NULL == InfpAddKeyToLine(Context->Line, Key))
{
DPRINT("Failed to add key\n");
return INF_STATUS_NO_MEMORY;
}
return INF_STATUS_SUCCESS;
}
INFSTATUS
InfpAddField(PINFCONTEXT Context, PCWSTR Data)
{
if (NULL == Context || NULL == Context->Line)
{
DPRINT1("Invalid parameter\n");
return INF_STATUS_INVALID_PARAMETER;
}
if (NULL == InfpAddFieldToLine(Context->Line, Data))
{
DPRINT("Failed to add field\n");
return INF_STATUS_NO_MEMORY;
}
return INF_STATUS_SUCCESS;
}
/* EOF */