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#include "f2c.h"
#undef abs
#include <stdlib.h>
#include <string.h>
extern char *F77_aloc (ftnlen, char *);
/*
* getenv - f77 subroutine to return environment variables
*
* called by:
* call getenv (ENV_NAME, char_var)
* where:
* ENV_NAME is the name of an environment variable
* char_var is a character variable which will receive
* the current value of ENV_NAME, or all blanks
* if ENV_NAME is not defined
*/
void
G77_getenv_0 (char *fname, char *value, ftnlen flen, ftnlen vlen)
{
char buf[256], *ep, *fp;
integer i;
if (flen <= 0)
goto add_blanks;
for (i = 0; i < (integer) sizeof (buf); i++)
{
if (i == flen || (buf[i] = fname[i]) == ' ')
{
buf[i] = 0;
ep = getenv (buf);
goto have_ep;
}
}
while (i < flen && fname[i] != ' ')
i++;
strncpy (fp = F77_aloc (i + 1, "getenv_"), fname, (int) i);
fp[i] = 0;
ep = getenv (fp);
free (fp);
have_ep:
if (ep)
while (*ep && vlen-- > 0)
*value++ = *ep++;
add_blanks:
while (vlen-- > 0)
*value++ = ' ';
}
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