envorini.txt

来自「dos 1.0 其中包含quick basic源代码、内存管理himem emm」· 文本 代码 · 共 74 行

SUMMARY getenvini

#include <tools.h>

char *getenvini(pstrEnv, pstrSection)
char *pstrEnv;
char *pstrSection;


DESCRIPTION

getenvini looks for an environment variable pstrSection_pstrEnv, e.g.
if pstrEnv is "mysrc" and pstrSection is "to", getenvini looks for the
environment variable "TO_MYSRC".  (The strings are converted to upper case
because environment variables are upper case'd even though their value is
mixed case.)

If found and the value has non-white space characters, then a copy of the
value is returned.

If found and the value has only white space characters, then NULL is returned.

If the combined string is not found in the environment then the file
$USER:\TOOLS.INI and getenvini tries to find a section [pstrSection] and
an entry "pstrEnv=".  The value of the entry is the string to the right of the
=.

If found and the value has non-white space characters, then a copy of the
value is returned.

If found and the value has only white space characters, then NULL is returned.

If not found then NULL is returned.


If the return value is non-NULL you must free the returned string when you
are done with it.


RETURN VALUE


IMPLEMENTATION

Calls getenv(pstrEnv) from C library and swfind from Tools.lib.

SEE ALSO


NOTE


EXAMPLE

Env contains

    set mysrc=c:\MYSRC

or TOOLS.INI contains

[to]
    mysrc=c:\MYSRC



#include <tools.h>

main(c, argv)
int c;
char *argv[];
{
    printf("%s\n", getenvini ("mysrc", "to"));
}