Update Envmodules_InitStateUsergroupsObjCmd to make a first dummy call
to "getgroups" function in order to retrieve the number of groups and
then be able to allocate the right array size.
With such change, our function does not rely anymore on sysconf function
and on NGROUPS_MAX and DEFAULT_MAXGROUPS defines.
Change license of the Modules Tcl extension library from GPLv3+ to
GPLv2+.
Align this way all files from the Modules project under the GPLv2+
license.
Consent has been obtained from copyright holder to perform such move (I
hold the full copyright for this library).
Related to #389
Update C-version of the readFile procedure to add it the
`must_have_cookie` argument that tells if the Modules magic cookie
(#%Module) has to be checked when reading file to abort reading as soon
as possible if read file must be a modulefile.
Bump version of Tcl Envmodules library to 1.3.0.
Fixes#375.
Add function in libtclenvmodules to implement 'parseDateTimeArg' as a
Tcl command, which provides a more efficient way to convert a datetime
string into an Epoch time.
Add function in libtclenvmodules to implement 'initStateClockSeconds' as
a Tcl command, which provides a more efficient way to retrieve current
Epoch time.
Add function in libtclenvmodules to implement `initStateUsergroups` as a
Tcl command, which provides a more efficient way to retrieve current
groups of running process, rather forking to execute `id` external
binary.
Note that if current system does not support the `getgroups` system
call, only the primary group name of current user will be returned.
Add function in libtclenvmodules to implement `initStateUsername` as a
Tcl command, which provides a more efficient way to retrieve current
username, rather forking to execute `id` external binary.
Add function in libtclenvmodules to implement getFilesInDirectory as a
command, which provides a more IO-optimized way than native Tcl commands
perform by avoiding specific additional queries to get hidden files like
.modulerc and .version. As a result 1 stat and 2 access syscalls are
saved per directory read.
Introduce Modules Tcl extension library (written in C) to extend Tcl
language in order to provide more optimized I/O commands than native Tcl
commands do.
This library first provides a 'readFile' command which performs an open,
read, close of a given modulefile to fetch its content. Compared to the
Tcl native open, read, close commands it saves 1 ioctl + 1 fcntl + N
lstat system calls per modulefile.
