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129 | .\" ======================================================================== | |
130 | .\" | |
131 | .IX Title "User::grent 3" | |
132 | .TH User::grent 3 "2002-06-01" "perl v5.8.0" "Perl Programmers Reference Guide" | |
133 | .SH "NAME" | |
134 | User::grent \- by\-name interface to Perl's built\-in getgr*() functions | |
135 | .SH "SYNOPSIS" | |
136 | .IX Header "SYNOPSIS" | |
137 | .Vb 5 | |
138 | \& use User::grent; | |
139 | \& $gr = getgrgid(0) or die "No group zero"; | |
140 | \& if ( $gr->name eq 'wheel' && @{$gr->members} > 1 ) { | |
141 | \& print "gid zero name wheel, with other members"; | |
142 | \& } | |
143 | .Ve | |
144 | .PP | |
145 | .Vb 5 | |
146 | \& use User::grent qw(:FIELDS; | |
147 | \& getgrgid(0) or die "No group zero"; | |
148 | \& if ( $gr_name eq 'wheel' && @gr_members > 1 ) { | |
149 | \& print "gid zero name wheel, with other members"; | |
150 | \& } | |
151 | .Ve | |
152 | .PP | |
153 | .Vb 1 | |
154 | \& $gr = getgr($whoever); | |
155 | .Ve | |
156 | .SH "DESCRIPTION" | |
157 | .IX Header "DESCRIPTION" | |
158 | This module's default exports override the core \fIgetgrent()\fR, \fIgetgruid()\fR, | |
159 | and \fIgetgrnam()\fR functions, replacing them with versions that return | |
160 | \&\*(L"User::grent\*(R" objects. This object has methods that return the similarly | |
161 | named structure field name from the C's passwd structure from \fIgrp.h\fR; | |
162 | namely name, passwd, gid, and members (not mem). The first three | |
163 | return scalars, the last an array reference. | |
164 | .PP | |
165 | You may also import all the structure fields directly into your namespace | |
166 | as regular variables using the :FIELDS import tag. (Note that this still | |
167 | overrides your core functions.) Access these fields as variables named | |
168 | with a preceding \f(CW\*(C`gr_\*(C'\fR. Thus, \f(CW\*(C`$group_obj\->gid()\*(C'\fR corresponds | |
169 | to \f(CW$gr_gid\fR if you import the fields. Array references are available as | |
170 | regular array variables, so \f(CW\*(C`@{ $group_obj\->members() }\*(C'\fR would be | |
171 | simply \f(CW@gr_members\fR. | |
172 | .PP | |
173 | The \fIgetpw()\fR function is a simple front-end that forwards | |
174 | a numeric argument to \fIgetpwuid()\fR and the rest to \fIgetpwnam()\fR. | |
175 | .PP | |
176 | To access this functionality without the core overrides, | |
177 | pass the \f(CW\*(C`use\*(C'\fR an empty import list, and then access | |
178 | function functions with their full qualified names. | |
179 | On the other hand, the built-ins are still available | |
180 | via the \f(CW\*(C`CORE::\*(C'\fR pseudo\-package. | |
181 | .SH "NOTE" | |
182 | .IX Header "NOTE" | |
183 | While this class is currently implemented using the Class::Struct | |
184 | module to build a struct-like class, you shouldn't rely upon this. | |
185 | .SH "AUTHOR" | |
186 | .IX Header "AUTHOR" | |
187 | Tom Christiansen |