#include <stdlib.h>
#include <string.h>

#include "h5core/h5_core.h"
#include "Underscore.h"

#if defined(F77_SINGLE_UNDERSCORE)
#define F77NAME(a,b) a
#elif defined(F77_CRAY_UNDERSCORE)
#define F77NAME(a,b) b
#elif defined(F77_NO_UNDERSCORE)
#else
#error Error, no way to determine how to construct fortran bindings
#endif

#if !defined(F77_NO_UNDERSCORE)

#define h5_openr F77NAME (                                              \
                h5_openr_,                      \
                H5_OPENR )
#define h5_openw F77NAME (                                              \
                h5_openw_,                      \
                H5_OPENW )
#define h5_opena F77NAME (                                              \
                h5_opena_,                      \
                H5_OPENA )
#define h5_openr_par_align F77NAME (                                    \
                h5_openr_par_align_,            \
                H5_OPENR_PAR_ALIGN )
#define h5_openw_par_align F77NAME (                                    \
                h5_openw_par_align_,            \
                H5_OPENW_PAR_ALIGN )
#define h5_opena_par_align F77NAME (                                    \
                h5_opena_par_align_,            \
                H5_OPENA_PA_ALIGNR )
#define h5_close F77NAME (                                              \
                h5_close_,                      \
                H5_CLOSE)
#define h5_check F77NAME (                                              \
                h5_check_,                      \
                H5_CHECK)
#define h5_setstep F77NAME (                                            \
                h5_setstep_,                    \
                H5_SETSTEP )
#define h5_getnsteps F77NAME (                                          \
                h5_getnsteps_,                  \
                H5_GETNSTEPS )
#define h5_set_verbosity_level F77NAME (                                \
                h5_set_verbosity_level_,        \
                H5_SET_VERBOSITY_LEVEL )

#endif

/* open/close interface */
h5_err_t
h5_openr (
        const char *name,
        const int l_name
        ) {

	H5_API_ENTER (h5_err_t, "name='%s', l_name=%d", name, l_name);
	char *name2 = h5_strdupfor2c ( name, l_name );
	h5_file_t* f = h5_open_file ( name2, H5_O_RDONLY, 0, 0 );
	free ( name2 );
	H5_API_RETURN((h5_int64_t)(size_t)f);
}

h5_err_t
h5_openw (
        const char *name,
        const int l_name
        ) {

	H5_API_ENTER (h5_err_t, "name='%s', l_name=%d", name, l_name);
	char *name2 = h5_strdupfor2c ( name, l_name );
	h5_file_t* f = h5_open_file ( name2, H5_O_WRONLY, 0, 0 );
	free ( name2 );
	H5_API_RETURN((h5_int64_t)(size_t)f);
}

h5_err_t
h5_opena (
        const char *name,
        const int l_name
        ) {

	H5_API_ENTER (h5_err_t, "name='%s', l_name=%d", name, l_name);
	char *name2 = h5_strdupfor2c ( name, l_name );
	h5_file_t* f = h5_open_file ( name2, H5_O_APPEND, 0, 0 );
	free ( name2 );
	H5_API_RETURN((h5_int64_t)(size_t)f);
}

#ifdef PARALLEL_IO
h5_err_t
h5_openr_par_align (
        const char *name,
        MPI_Fint *fcomm,
        const h5_int64_t *align,
        const char *flags,
        const int l_name,
        const int l_flags
        ) {

	H5_API_ENTER (h5_err_t, "name='%s', fcomm=%d, align=%lld, flags=%s, "
	              "l_name=%d, l_flags=%d",
	              name, *fcomm, (long long)*align,
	              flags, l_name, l_flags);
	MPI_Comm ccomm = MPI_Comm_f2c (*fcomm);
	char *name2 = h5_strdupfor2c ( name, l_name );
	char *flags2 = h5_strdupfor2c ( flags, l_flags );
	h5_int32_t fbits = H5_O_RDONLY | _flagsfor2c ( flags2 );
	h5_file_t* f = h5_open_file ( name2, fbits, ccomm, 0 );
	free ( name2 );
	free ( flags2 );
	H5_API_RETURN((h5_int64_t)(size_t)f);
}

h5_err_t
h5_openw_par_align (
        const char *name,
        MPI_Fint *fcomm,
        const h5_int64_t *align,
        const char *flags,
        const int l_name,
        const int l_flags
        ) {

	H5_API_ENTER (h5_err_t, "name='%s', fcomm=%d, align=%lld, flags=%s, "
	              "l_name=%d, l_flags=%d",
	              name, *fcomm, (long long)*align,
	              flags, l_name, l_flags);
	MPI_Comm ccomm = MPI_Comm_f2c (*fcomm);
	char *name2 = h5_strdupfor2c ( name, l_name );
	char *flags2 = h5_strdupfor2c ( flags, l_flags );
	h5_int32_t fbits = H5_O_WRONLY | _flagsfor2c ( flags2 );
	h5_file_t* f = h5_open_file ( name2, fbits, ccomm, 0 );
	free ( name2 );
	free ( flags2 );
	H5_API_RETURN((h5_int64_t)(size_t)f);
}

h5_err_t
h5_opena_par_align (
        const char *name,
        MPI_Fint *fcomm,
        const h5_int64_t *align,
        const char *flags,
        const int l_name,
        const int l_flags
        ) {

	H5_API_ENTER (h5_err_t, "name='%s', fcomm=%d, align=%lld, flags=%s, "
	              "l_name=%d, l_flags=%d",
	              name, *fcomm, (long long)*align,
	              flags, l_name, l_flags);
	MPI_Comm ccomm = MPI_Comm_f2c (*fcomm);
	char *name2 = h5_strdupfor2c ( name, l_name );
	char *flags2 = h5_strdupfor2c ( flags, l_flags );
	h5_int32_t fbits = H5_O_APPEND | _flagsfor2c ( flags2 );
	h5_file_t* f = h5_open_file ( name2, fbits, ccomm, *align );
	free ( name2 );
	free ( flags2 );
	H5_API_RETURN((h5_int64_t)(size_t)f);
}
#endif

h5_err_t
h5_close (
        const h5_int64_t *f
        ) {

	h5_file_t *fh = h5_filehandlefor2c(f);
	H5_API_ENTER (h5_err_t, "f=%p", fh);
	H5_API_RETURN(h5_close_file ( fh ));
}

h5_err_t
h5_check (
        const h5_int64_t *f
        ) {

	h5_file_t *fh = h5_filehandlefor2c(f);
	H5_API_ENTER (h5_err_t, "f=%p", fh);
	H5_API_RETURN(h5_check_filehandle ( fh ));
}

h5_err_t
h5_setstep (
        const h5_int64_t *f,
        h5_int64_t *step ) {

	h5_file_t *fh = h5_filehandlefor2c(f);
	H5_API_ENTER (h5_err_t, "f=%p, step=%lld", fh, (long long)*step);
	H5_API_RETURN(h5_set_step ( fh, (*step)-1 ));
}

h5_ssize_t
h5_getnsteps (
        const h5_int64_t *f
        ) {

	h5_file_t *fh = h5_filehandlefor2c(f);
	H5_API_ENTER (h5_ssize_t, "f=%p", fh);
	H5_API_RETURN(h5_get_num_steps ( fh ));
}

h5_err_t
h5_set_verbosity_level (
        const h5_int64_t *level
        ) {

	H5_API_ENTER (h5_err_t, "level=%lld", (long long)*level);
	H5_API_RETURN(h5_set_debuglevel ( *level ));
}