CheckExtn.c

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/************************************************************************/
/**

   \file       CheckExtn.c
   
   \version    V1.21
   \date       07.07.14
   \brief      General purpose routines
   
   \copyright  (c) UCL / Dr. Andrew C. R. Martin 1991-2014
   \author     Dr. Andrew C. R. Martin
   \par
               Institute of Structural & Molecular Biology,
               University College London,
               Gower Street,
               London.
               WC1E 6BT.
   \par
               andrew@bioinf.org.uk
               andrew.martin@ucl.ac.uk
               
**************************************************************************

   This code is NOT IN THE PUBLIC DOMAIN, but it may be copied
   according to the conditions laid out in the accompanying file
   COPYING.DOC.

   The code may be modified as required, but any modifications must be
   documented so that the person responsible can be identified.

   The code may not be sold commercially or included as part of a 
   commercial product except as described in the file COPYING.DOC.

**************************************************************************

   Description:
   ============

   These are generally useful C routines, mostly string handling.

**************************************************************************

   Usage:
   ======

**************************************************************************

   Revision History:
   =================
-  V1.1  08.02.91 Added KillLine()
-  V1.2  10.02.91 Added setextn() and index()
-  V1.3  20.03.91 Added Word()
-  V1.4  28.05.92 ANSIed
-  V1.5  22.06.92 Added tab check to Word(). Improved setextn().
                  Added WordN(). Documented other routines.
-  V1.6  27.07.93 Corrected fsscanf() for double precision
-  V1.7  07.10.93 Checks made on case before toupper()/tolower()
                  for SysV compatibility. Also index() becomes
                  chindex()
-  V1.8  18.03.94 getc() -> fgetc()
-  V1.9  11.05.94 Added GetFilestem(), upstrcmp(), upstrncmp() &
                  GetWord()
-  V1.10 24.08.94 Added OpenStdFiles()
-  V1.11 08.03.95 Corrected OpenFile() for non-UNIX
-  V1.12 09.03.95 Added check on non-NULL filename in OpenFile()
-  V1.13 17.07.95 Added countchar()
-  V1.14 18.10.95 Moved YorN() to WindIO.c
-  V1.15 06.11.95 Added StoreString(), InStringList() and FreeStringList()
-  V1.16 22.11.95 Moved ftostr() to generam.c
-  V1.17 15.12.95 Added QueryStrStr()
-  V1.18 18.12.95 OpenStdFiles() treats filename of - as stdin/stdout
-  V1.19 05.02.96 OpenStdFiles() allows NULL pointers instead if filenames
-  V1.20 18.09.96 Added padchar()
-  V1.21 07.07.14 Use bl prefix for functions By: CTP

*************************************************************************/
/* Doxygen
   -------
   #GROUP    General Programming
   #SUBGROUP File IO
   #FUNCTION  blCheckExtn()
   Check the extension of a filename. Case insensitive!
*/
/************************************************************************/
/* Includes
*/

#include <string.h>
#include <stdlib.h>
#include "general.h"
#include "SysDefs.h"


/************************************************************************/
/* Defines and macros
*/

/************************************************************************/
/* Globals
*/

/************************************************************************/
/* Prototypes
*/
/************************************************************************/
/*>BOOL blCheckExtn(char *string, char *ext)
   -----------------------------------------
*//**

   \param[in]     *string    String to be checked for given extension
   \param[in]     *ext       Extension to check for
   \return                   Found?

   Check the extension of a filename. For use on machines like VAXes,
   MS-DOS and Amigas, everything is converted to upper case first.

-  18.06.93 Original    By: ACRM
-  07.07.14 Use bl prefix for functions By: CTP
*/
BOOL blCheckExtn(char  *string,
                 char  *ext)
{
   int   extl     = strlen(ext),
         strl     = strlen(string);
   char  *buff1,
         *buff2;
   BOOL  RetVal   = TRUE;
         
   buff1 = (char *)malloc(strl * sizeof(char));
   buff2 = (char *)malloc(extl * sizeof(char));
   
   if(buff1==NULL || buff2==NULL)
   {
      if(buff1) free(buff1);
      if(buff2) free(buff2);
      return(FALSE);
   }
         
   blStringToUpper(string,buff1);
   blStringToUpper(ext,   buff2);
         
   if(strncmp(buff2,buff1+(strl-extl),extl))
      RetVal = FALSE;
      
   free(buff1);
   free(buff2);
   return(RetVal);
}