Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/prelude/Directory/DoesFileExist_.p.c

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Distributed under the MIT License.
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#include <haskell2c.h>
#include <sys/types.h>
#include <sys/stat.h>
#define TRUE  1
#define FALSE 0

int hs_doesFileExist (char* fp)
{ int b;
  
   struct stat st;
   int err = stat(fp,&st);
   if ((err==0) && S_ISREG(st.st_mode)) b=TRUE;
   else {
     err=0;	/* MUST reset err flag! */
     b=FALSE;
   }
  return b;
}

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