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/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "ompi/constants.h"
#include "opal/util/argv.h"
#include "ompi/mpi/f77/f77_strings.h"
/*
* creates a C string from an F77 string
*/
int ompi_fortran_string_f2c(char *fstr, int len, char **cstr)
{
char *end;
int i;
/* Leading and trailing blanks are discarded. */
end = fstr + len - 1;
for (i = 0; (i < len) && (' ' == *fstr); ++i, ++fstr) {
continue;
}
if (i >= len) {
len = 0;
} else {
for (; (end > fstr) && (' ' == *end); --end) {
continue;
}
len = end - fstr + 1;
}
/* Allocate space for the C string. */
if (NULL == (*cstr = (char *) malloc(len + 1))) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
/* Copy F77 string into C string and NULL terminate it. */
if (len > 0) {
strncpy(*cstr, fstr, len);
}
(*cstr)[len] = '\0';
return OMPI_SUCCESS;
}
/*
* Copy a C string into a Fortran string. Note that when Fortran
* copies strings, even if it operates on subsets of the strings, it
* is expected to zero out the rest of the string with spaces. Hence,
* when calling this function, the "len" parameter should be the
* compiler-passed length of the entire string, even if you're copying
* over less than the full string. Specifically:
*
* http://www.ibiblio.org/pub/languages/fortran/ch2-13.html
*
* "Whole operations 'using' only 'part' of it, e.g. assignment of a
* shorter string, or reading a shorter record, automatically pads the
* rest of the string with blanks."
*/
int ompi_fortran_string_c2f(char *cstr, char *fstr, int len)
{
int i;
strncpy(fstr, cstr, len);
for (i = strlen(cstr); i < len; ++i) {
fstr[i] = ' ';
}
return OMPI_SUCCESS;
}
/*
* creates a C argument vector from an F77 array of strings
* (terminated by a blank string)
*/
int ompi_fortran_argv_f2c(char *array, int string_len, int advance,
char ***argv)
{
int err, argc = 0;
char *cstr;
/* Fortran lines up strings in memory, each delimited by \0. So
just convert them until we hit an extra \0. */
*argv = NULL;
while (1) {
if (OMPI_SUCCESS != (err = ompi_fortran_string_f2c(array, string_len,
&cstr))) {
opal_argv_free(*argv);
return err;
}
if ('\0' == *cstr) {
break;
}
if (OMPI_SUCCESS != (err = opal_argv_append(&argc, argv, cstr))) {
opal_argv_free(*argv);
return err;
}
free(cstr);
array += advance;
}
return OMPI_SUCCESS;
}
/*
* Creates a set of C argv arrays from an F77 array of argv's. The
* returned arrays need to be freed by the caller.
*/
int ompi_fortran_multiple_argvs_f2c(int num_argv_arrays, char *array,
int string_len, char ****argv)
{
char ***argv_array;
int i;
char *current_array = array;
int ret;
argv_array = (char ***) malloc (num_argv_arrays * sizeof(char **));
for (i = 0; i < num_argv_arrays; ++i) {
ret = ompi_fortran_argv_f2c(current_array, string_len,
string_len * num_argv_arrays,
&argv_array[i]);
if (OMPI_SUCCESS != ret) {
return ret;
}
current_array += string_len;
}
*argv = argv_array;
return OMPI_SUCCESS;
}
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