cgiwrap_getenv.3

在 linux平台上的网页编程的模板

.TH cgiwrap_getenv 3 "12 July 2007" "ClearSilver" "cgi/cgiwrap.h"

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.SH NAME
cgiwrap_getenv  - the wrapper for getenv
.SH SYNOPSIS
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#include <cgi/cgiwrap.h>
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NEOERR *cgiwrap_getenv (const char *k, char **v);

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.SH ARGUMENTS
k - the environment variable to lookup

.SH DESCRIPTION
cgiwrap_getenv wraps the getenv function for access to
environment variables, which are used to pass data to
CGI scripts.  This version differs from the system
getenv in that it makes a copy of the value it returns,
which gets around problems when wrapping this routine in
garbage collected/reference counted languages by
moving the ownership of the data to the calling
function.

.SH "RETURN VALUE"
v - a newly allocated copy of the value of that variable, or
.br
NULL if not found.

.SH "SEE ALSO"
.BR cgiwrap_iterenv "(3), "cgiwrap_putenv "(3), "cgiwrap_init_emu "(3), "cgiwrap_writef "(3), "cgiwrap_init_std "(3), "cgiwrap_writevf "(3), "cgiwrap_read "(3), "cgiwrap_write "(3), "cgiwrap_getenv