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/** @file
* File splitter: splits soapC.cpp into manageable pieces. It is somewhat
* intelligent and avoids splitting inside functions or similar places.
*/
/*
* Copyright (C) 2009-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
int main(int argc, char *argv[])
{
int rc = 0;
FILE *pFileIn = NULL;
FILE *pFileOut = NULL;
char *pBuffer = NULL;
do
{
if (argc != 4)
{
fprintf(stderr, "split-soapC: Must be started with exactly three arguments,\n"
"1) the input file, 2) the directory where to put the output files and\n"
"3) the number chunks to create.\n");
rc = 2;
break;
}
char *pEnd = NULL;
unsigned long cChunk = strtoul(argv[3], &pEnd, 0);
if (cChunk == ULONG_MAX || cChunk == 0 || !argv[3] || *pEnd)
{
fprintf(stderr, "split-soapC: Given argument \"%s\" is not a valid chunk count.\n", argv[3]);
rc = 2;
break;
}
pFileIn = fopen(argv[1], "rb");
if (!pFileIn)
{
fprintf(stderr, "split-soapC: Cannot open file \"%s\" for reading.\n", argv[1]);
rc = 2;
break;
}
int rc2 = fseek(pFileIn, 0, SEEK_END);
long cbFileIn = ftell(pFileIn);
int rc3 = fseek(pFileIn, 0, SEEK_SET);
if (rc3 == -1 || rc2 == -1 || cbFileIn < 0)
{
fprintf(stderr, "split-soapC: Seek failure.\n");
rc = 2;
break;
}
if (!(pBuffer = (char*)malloc(cbFileIn + 1)))
{
fprintf(stderr, "split-soapC: Failed to allocate %ld bytes.\n", cbFileIn);
rc = 2;
break;
}
if (fread(pBuffer, 1, cbFileIn, pFileIn) != (size_t)cbFileIn)
{
fprintf(stderr, "split-soapC: Failed to read %ld bytes from input file.\n", cbFileIn);
rc = 2;
break;
}
pBuffer[cbFileIn] = '\0';
const char *pLine = pBuffer;
unsigned long cbChunk = cbFileIn / cChunk;
unsigned long cFiles = 0;
unsigned long uLimit = 0;
unsigned long cbWritten = 0;
unsigned long cIfNesting = 0;
unsigned long cBraceNesting = 0;
unsigned long cLinesSinceStaticMap = ~0UL / 2;
bool fJustZero = false;
do
{
if (!pFileOut)
{
/* construct output filename */
char szFilename[1024];
sprintf(szFilename, "%s/soapC-%lu.cpp", argv[2], ++cFiles);
szFilename[sizeof(szFilename)-1] = '\0';
printf("info: soapC-%lu.cpp\n", cFiles);
/* create output file */
if (!(pFileOut = fopen(szFilename, "wb")))
{
fprintf(stderr, "split-soapC: Failed to open file \"%s\" for writing\n", szFilename);
rc = 2;
break;
}
if (cFiles > 1)
fprintf(pFileOut, "#include \"soapH.h\"%s\n",
#ifdef RT_OS_WINDOWS
"\r"
#else /* !RT_OS_WINDOWS */
""
#endif /* !RT_OS_WINDOWS */
);
uLimit += cbChunk;
cLinesSinceStaticMap = ~0UL / 2;
}
/* find begin of next line and print current line */
const char *pNextLine = strchr(pLine, '\n');
size_t cbLine;
if (pNextLine)
{
pNextLine++;
cbLine = pNextLine - pLine;
}
else
cbLine = strlen(pLine);
if (fwrite(pLine, 1, cbLine, pFileOut) != cbLine)
{
fprintf(stderr, "split-soapC: Failed to write to output file\n");
rc = 2;
break;
}
cbWritten += cbLine;
/* process nesting depth information */
if (!strncmp(pLine, "#if", 3))
cIfNesting++;
else if (!strncmp(pLine, "#endif", 6))
{
cIfNesting--;
if (!cBraceNesting && !cIfNesting)
fJustZero = true;
}
else
{
for (const char *p = pLine; p < pLine + cbLine; p++)
{
if (*p == '{')
cBraceNesting++;
else if (*p == '}')
{
cBraceNesting--;
if (!cBraceNesting && !cIfNesting)
fJustZero = true;
}
}
}
/* look for static variables used for enum conversion. */
if (!strncmp(pLine, "static const struct soap_code_map", sizeof("static const struct soap_code_map") - 1))
cLinesSinceStaticMap = 0;
else
cLinesSinceStaticMap++;
/* start a new output file if necessary and possible */
if ( cbWritten >= uLimit
&& cIfNesting == 0
&& fJustZero
&& cFiles < cChunk
&& cLinesSinceStaticMap > 150 /*hack!*/)
{
fclose(pFileOut);
pFileOut = NULL;
}
if (rc)
break;
fJustZero = false;
pLine = pNextLine;
} while (pLine);
printf("split-soapC: Created %lu files.\n", cFiles);
} while (0);
if (pBuffer)
free(pBuffer);
if (pFileIn)
fclose(pFileIn);
if (pFileOut)
fclose(pFileOut);
return rc;
}
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