forked from Archive/PX4-Autopilot
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/**********************************************************************
|
|
* pextension.c
|
|
* Manage file extensions
|
|
*
|
|
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
**********************************************************************/
|
|
|
|
/**********************************************************************
|
|
* Included Files
|
|
**********************************************************************/
|
|
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
|
|
#include "keywords.h"
|
|
#include "pdefs.h"
|
|
#include "paslib.h"
|
|
|
|
/***********************************************************************/
|
|
|
|
bool extension(const char *inName, const char *ext, char *outName,
|
|
bool force_default)
|
|
{
|
|
int namelen = strlen(inName);
|
|
int extlen;
|
|
int copylen;
|
|
char *lastdot;
|
|
|
|
/* Find the position of the last occurrence of '.' in inName */
|
|
|
|
lastdot = strrchr(inName, '.');
|
|
|
|
/* If a file extension is in the input line and no default is forced, then
|
|
* copy the rest of the input line
|
|
*/
|
|
|
|
if ((lastdot != NULL) && (!force_default))
|
|
{
|
|
/* Make sure that the string (with its null terminator) will fit in
|
|
* the allocated buffer.
|
|
*/
|
|
|
|
if ((namelen + 1) > FNAME_SIZE)
|
|
{
|
|
/* It won't */
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
/* Copy the string. */
|
|
|
|
strcpy(outName, inName);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* The name has no extension or we must replace the extension. */
|
|
|
|
extlen = strlen(ext) + 1; /* extension + null terminator */
|
|
|
|
if (lastdot != NULL)
|
|
{
|
|
/* It has an extension. We must copy everything except the
|
|
* last dot and the following extension.
|
|
*/
|
|
|
|
copylen = namelen - strlen(lastdot); /* name - . - terminator */
|
|
}
|
|
else
|
|
{
|
|
/* It has no extension. We must copy everything */
|
|
|
|
copylen = namelen + 1; /* whole name with null termination */
|
|
}
|
|
|
|
/* Make sure that the string (with its null terminator) will fit in
|
|
* the allocated buffer.
|
|
*/
|
|
|
|
if ((copylen + extlen + 1) > FNAME_SIZE)
|
|
{
|
|
/* It won't */
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
/* It will Copy file name up to, but excluding, the '.' */
|
|
|
|
memcpy(outName, inName, copylen);
|
|
|
|
/* Then copy the extension */
|
|
|
|
outName[copylen] = '.';
|
|
memcpy(&outName[copylen+1], ext, extlen);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
|
|
} /* end extension */
|
|
|
|
/***********************************************************************/
|