52 lines
987 B
C
52 lines
987 B
C
|
#include "f2c.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef KR_headers
|
||
|
|
VOID G77_getenv_0 (fname, value, flen, vlen) char *value, *fname; ftnlen vlen, flen;
|
||
|
|
#else
|
||
|
|
void G77_getenv_0 (char *fname, char *value, ftnlen flen, ftnlen vlen)
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
extern char **environ;
|
||
|
|
register char *ep, *fp, *flast;
|
||
|
|
register char **env = environ;
|
||
|
|
|
||
|
|
flast = fname + flen;
|
||
|
|
for(fp = fname ; fp < flast ; ++fp)
|
||
|
|
if(*fp == ' ')
|
||
|
|
{
|
||
|
|
flast = fp;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
while (ep = *env++)
|
||
|
|
{
|
||
|
|
for(fp = fname; fp<flast ; )
|
||
|
|
if(*fp++ != *ep++)
|
||
|
|
goto endloop;
|
||
|
|
|
||
|
|
if(*ep++ == '=') { /* copy right hand side */
|
||
|
|
while( *ep && --vlen>=0 )
|
||
|
|
*value++ = *ep++;
|
||
|
|
|
||
|
|
goto blank;
|
||
|
|
}
|
||
|
|
endloop: ;
|
||
|
|
}
|
||
|
|
|
||
|
|
blank:
|
||
|
|
while( --vlen >= 0 )
|
||
|
|
*value++ = ' ';
|
||
|
|
}
|