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Richard Levitte 8ff2af5483 Bundle the non core Perl module Text::Template Because we're using Text::Template and we know it's a non core Perl module, we choose to bundle it into our source, for convenience. external/perl/Downloaded.txt document what modules we choose to bundle this way and exactly where we downloaded it from. With this changes comes the transfer module for with_fallback. Reviewed-by: Rich Salz <rsalz@openssl.org>		2016-01-22 23:12:22 +01:00
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README

Text::Template v1.46

This is a library for generating form letters, building HTML pages, or
filling in templates generally. A `template' is a piece of text that
has little Perl programs embedded in it here and there. When you
`fill in' a template, you evaluate the little programs and replace
them with their values.

Here's an example of a template:

Dear {$title} {$lastname},

It has come to our attention that you are delinquent in your
{$monthname[$last_paid_month]} payment. Please remit
${sprintf("%.2f", $amount)} immediately, or your patellae may
be needlessly endangered.

Love,

Mark "{nickname(rand 20)}" Dominus

The result of filling in this template is a string, which might look
something like this:

Dear Mr. Gates,

It has come to our attention that you are delinquent in your
February payment. Please remit
$392.12 immediately, or your patellae may
be needlessly endangered.

Love,

Mark "Vizopteryx" Dominus

You can store a template in a file outside your program. People can
modify the template without modifying the program. You can separate
the formatting details from the main code, and put the formatting
parts of the program into the template. That prevents code bloat and
encourages functional separation.

You can fill in the template in a `Safe' compartment. This means that
if you don't trust the person who wrote the code in the template, you
won't have to worry that they are tampering with your program when you
execute it.

----------------------------------------------------------------

Text::Template was originally released some time in late 1995 or early
1996. After three years of study and investigation, I rewrote it from
scratch in January 1999. The new version, 1.0, was much faster,
delivered better functionality and was almost 100% backward-compatible
with the previous beta versions.

I have added a number of useful features and conveniences since the
1.0 release, while still retaining backward compatibility. With one
merely cosmetic change, the current version of Text::Template passes
the test suite that the old beta versions passed.

Questions or comments should be addressed to
mjd-perl-template+@plover.com. This address goes directly to me, and
not to anyone else; it is not a mailing list address.

To receive occasional announcements of new versions of T::T, send an
empty note to mjd-perl-template-request@plover.com. This mailing list
is not for discussion; it is for announcements only. Therefore, there
is no address for sending messages to the list.

You can get the most recent version of Text::Template, news, comments,
and other collateral information from
<URL:http://www.plover.com/~mjd/perl/Template/>.

----------------------------------------------------------------

What's new in v1.46 since v1.44:

Thanks to Rik Signes, there is a new
Text::Template->append_text_to_output method, which
Text::Template always uses whenever it wants to emit output.
You can subclass this to get control over the output, for
example for postprocessing.

A spurious warning is no longer emitted when the TYPE
parameter to ->new is omitted.

----------------------------------------------------------------
What's new in v1.44 since v1.43:

This is a maintentance release. There are no feature changes.

_scrubpkg, which was responsible for eptying out temporary
packages after the module had done with them, wasn't always
working; the result was memory-leaks in long-running
applications. This should be fixed now, and there is a test
in the test suite for it.

Minor changes to the test suite to prevent spurious errors.

Minor documentation changes.

----------------------------------------------------------------
What's new in v1.43 since v1.42:

The ->new method now fails immediately and sets
$Text::Template::ERROR if the file that is named by a filename
argument does not exist or cannot be opened for some other
reason. Formerly, the constructor would succeed and the
->fill_in call would fail.

----------------------------------------------------------------

What's new in v1.42 since v1.41:

This is a maintentance release. There are no feature changes.

Fixed a bug relating to use of UNTAINT under perl 5.005_03 and
possibly other versions.

Taint-related tests are now more comprehensive.
----------------------------------------------------------------

What's new in v1.41 since v1.40:

This is a maintentance release. There are no feature changes.

Tests now work correctly on Windows systems and possibly on
other non-unix systems.

----------------------------------------------------------------

What's new in v1.40 since v1.31:

New UNTAINT option tells the module that it is safe to 'eval'
code even though it has come from a file or filehandle.

Code added to prevent memory leaks when filling many
templates. Thanks to Itamar Almeida de Carvalho.

Bug fix: $OUT was not correctly initialized when used in
conjunction with SAFE.

You may now use a glob ref when passing a filehandle to the
->new funcion. Formerly, a glob was reuqired.

New subclass: Text::Template::Preprocess. Just like
Text::Template, but you may supply a PREPROCESS option in the
constructor or the fill_in call; this is a function which
receives each code fragment prior to evaluation, and which may
modify and return the fragment; the modified fragment is what
is evaluated.

Error messages passed to BROKEN subroutines will now report
the correct line number of the template at which the error
occurred:

Illegal division by zero at template line 37.

If the template comes from a file, the filename will be
reported as well:

Illegal division by zero at catalog.tmpl line 37.

INCOMPATIBLE CHANGE:

The format of the default error message has changed. It used
to look like:

Program fragment at line 30 delivered error ``Illegal division by zero''

It now looks like:

Program fragment delivered error ``Illegal division by zero at catalog.tmpl line 37''

Note that the default message used to report the line number
at which the program fragment began; it now reports the line
number at which the error actually occurred.

----------------------------------------------------------------
What's new in v1.31 since v1.23:

Just bug fixes---fill_in_string was failing. Thanks to
Donald L. Greer Jr. for the test case.

----------------------------------------------------------------
What's new in v1.23 since v1.22:

Small bug fix: DELIMITER and other arguments were being
ignored in calls to fill_in_file and fill_this_in. (Thanks to
Jonathan Roy for reporting this.)

----------------------------------------------------------------
What's new in v1.22 since v1.20:

You can now specify that certain Perl statements be prepended
to the beginning of every program fragment in a template,
either per template, or for all templates, or for the duration
of only one call to fill_in. This is useful, for example, if
you want to enable `strict' checks in your templates but you
don't want to manually add `use strict' to the front of every
program fragment everywhere.

----------------------------------------------------------------
What's new in v1.20 since v1.12:

You can now specify that the program fragment delimiters are
strings other than { and }. This has three interesting
effects: First, it changes the delimiter strings. Second, it
disables the special meaning of \, so you have to be really,
really sure that the delimiters will not appear in your
templates. And third, because of the simplifications
introduced by the elimination of \ processing, template
parsing is 20-25% faster.

See the manual section on `Alternative Delimiters'.

Fixed bug having to do with undefined values in HASH options.
In particular, Text::Template no longer generates a warning if
you try to give a variable an undefined value.

----------------------------------------------------------------

What's new in v1.12 since v1.11:

I forgot to say that Text::Template ISA Exporter, so the
exported functions never got exported. Duhhh!

Template TYPEs are now case-insensitive. The `new' method now
diagnoses attempts to use an invalid TYPE.

More tests for these things.

----------------------------------------------------------------

What's new in v1.11 since v1.10:

Fixed a bug in the way backslashes were processed. The 1.10
behavior was incompatible with the beta versions and was also
inconvenient. (`\n' in templates was replaced with `n' before
it was given to Perl for evaluation.) The new behavior is
also incompatible with the beta versions, but it is only a
little bit incompatible, and it is probbaly better.

Documentation for the new behavior, and tests for the bug.

----------------------------------------------------------------

What's new in v1.10 since v1.03:

New OUTPUT option delivers template results directly to a
filehandle instead of making them into a string. Saves space
and time.

PACKAGE and HASH now work intelligently with SAFE.

Fragments may now output data directly to the template, rather
than having to arrange to return it as a return value at the
end. This means that where you used to have to write this:

{ my $blist = '';
foreach $i (@items) {
$blist .= qq{ * $i\n};
}
$blist;
}

You can now write this instead, because $OUT is special.

{ foreach $i (@items) {
$OUT.= " * $i\n";
}
}

(`A spoonful of sugar makes the medicine go down.')

Fixed some small bugs. Worked around a bug in Perl that does
the wrong thing with $x = <Y> when $x contains a glob.