HTML::CTPP2 - Perl interface for CTPP2 library
First you should make template, file `hello.tmpl`: Foo: <TMPL_var foo> <TMPL_if array> Here is loop body: <TMPL_loop array> Key: <TMPL_var key> </TMPL_loop> </TMPL_if> Now create PERL script: #!/usr/bin/perl -w use strict; use HTML::CTPP2; my $T = new HTML::CTPP2(); # Parse template my $Bytecode = $T -> parse_template("hello.tmpl"); or my $Bytecode = $T -> parse_text("<TMPL_var hello>"); # Fill parameters my %H = (foo => "bar", array => [ { "key" => "first" }, { "key" => "second"} ] ); $T -> param(\%H); my $Result = $T -> output($Bytecode); or my $SourceCharset = 'iso-8859-5'; my $DestinationCharset = 'utf-8'; my $Result = $T -> output($Bytecode, $SourceCharset, $DestinationCharset); Now check output: Foo: bar Here is loop body: Key: first Key: second Since version 2.1.1 of CTPP *library*, you can also use expressions in <TMPL_if and in <TMPL_var operators: Since version 2.5.0 of CTPP *library*, you can also use loop iterators <TMPL_foreach.
This module is very similar to well-known Sam Tregar's HTML::Template but works in 22 - 25 times faster and contains extra functionality. CTPP2 template language dialect contains 10 operators: <TMPL_var>, <TMPL_if>, <TMPL_elsif>, <TMPL_else>, <TMPL_unless>, <TMPL_loop>, <TMPL_foreach>, <TMPL_udf>, <TMPL_include> and <TMPL_comment>.
In order to simplify the make-up, all operators names are case insensitive, that is why the notifications such as: <TMPL_var , <TmPl_VaR , <tmpl_VAR are equal. BUT the names of variables are case sensitive, that's why for example: <TMPL_var ABC>, <TMPL_var abc>, <TMPL_var Abc> are not in equal state. Parameters, which names starting with a symbol of underlining (for example __FIRST__) are reserved names and should NOT be used by the developer. Variable names can be composed of letters, numbers, and underscores (_). Every variable name in CTPP must start with a letter. You can access subproperties (hash references to oher object) of variable by specifying it after variable name separated by dot '.': <TMPL_var foo.bar>.
<TMPL_var VAR_NAME>, <TMPL_udf VAR_NAME> - Direct parameter output. In CTPP template engine two types of variables are defined: local and global. The sense of these two concepts is completely equal with a similar idea in the other algorithmic languages such as C++ & Perl. For variable output use operator <TMPL_var VAR_NAME> Example 1.1 Template: "Hello, <b><TMPL_var username></b>!" Parameter: username => "Olga" Output: "Hello, Olga!" You can use user defined functions to make a variable output. Example 1.2 Template: "<a href="/index.cgi?username=<TMPL_var URLESCAPE(username)>">" Parameter: username => "Àíäðåé" (string in non-ascii7 character set) Output: "<a href="/index.cgi?username=%C0%ED%E4%F0%E5%E9">" Example 1.3 Template: User <TMPL_var user.name> has id <TMPL_var user.id> Parameter: user => { name => "Fred", id => 1234 } Output: User Fred has id 1234
These operators impose condition on your template output, it depends on the result of logical expression placed to the right of the operator's body. CTPP defines four operators of condition: <TMPL_if LOGICAL_EXPR>, <TMPL_elsif LOGICAL_EXPR>, <TMPL_else> and <TMPL_unless LOGICAL_EXPR>. Operators evaluates logical expression to the result and according to it executes or not the further instructions. You can also use variables (local and global) and user defined functions inside of the operator's body. Example 2.1 <TMPL_if LOGICAL_EXPR> Some instructions if result has true value. <TMPL_elsif OTHER_EXPRESSION> Some instructions if result has false value. <TMPL_else> Else-branch/ </TMPL_if> <TMPL_unless LOGICAL_EXPR1> Some instructions if result has false value. <TMPL_elsif LOGICAL_EXPR2> Some instructions if evaluation result of LOGICAL_EXPR2 has true value. <TMPL_else> Some instructions if result has true value. </TMPL_unless> The branches of <TMPL_elsif> and <TMPL_else> are not firmly binds, it means that the following notification is allowed: <TMPL_if LOGICAL_EXPR> Some instructions </TMPL_if>. Thus the operator <TMPL_unless differs from the operator <TMPL_if in the executing some instructions if the evaluated value is false.
The loop - The multiple repeating of some pre-defined actions. The first type of loops in CTPP - the forward running over through the data array. The operator corresponding with this action looks like the following: <TMPL_loop MODIFIERS LOOP_NAME> The LOOP instructions. </TMPL_loop> If you evidently put the mark to use context variables in the loop body, CTPP inserts seven special variables, called context vars. The names of these variables start with the double underline, this fact points to their system meaning. Set of values for "context vars": * __FIRST__ - sets to "1" during the first loop iteration, in other cases not defined. * __LAST__ - sets to the last iteration number, otherwise is not defined. * __INNER__ - accommodates the number from the second to the pre-last iteration, otherwise undefined * __OUTER__ - accommodates the number of first and last iteration, otherwise undefined * __ODD__ - the number of an odd iteration. For the even one - undefined. * __COUNTER__ - the number of current iteration. * __RCOUNTER__ - whole number of the loop iterations minus the number of current iteration. * __EVEN__ - opposite to the __ODD__ variable. * __SIZE__ - the whole number of the loop iterations. * __CONTENT__ - contains value of current iteration
The second type of loops in CTPP - forward iteration through the data array The operator corresponding with this action looks like the following: <TMPL_foreach LOOP_NAME as ITERATOR> <TMPL_var OBJ_DUMP(ITERATOR)> The LOOP instructions. </TMPL_foreach>
In some cases it happens to allocate conveniently identical parts in several templates (for example, heading or the menu on page) and to place them in one file. This is done by operator <TMPL_include filename.tmpl>. Example 3.1: File `main.tmpl`: <TMPL_loop foo> <TMPL_include "filename.tmpl" map(bar : baz, orig_param : include_param)> </TMPL_loop> File filename.tmpl: <TMPL_var baz> You can rename variable in included templates. In example 3.1 variable 'baz' in file 'filename.tmpl' was renamed to 'bar' and 'orig_param' to 'include_param'. This is useful when you include one template many times in main template. Attention! You CAN NOT place a part of a loop or condition in separate templates. In other words, this construction will not work: Example 3.2 File `main.tmpl`: <TMPL_if foo> <TMPL_include 'abc.tmpl'> File `abc.tmpl`: </TMPL_if>
All characters between <TMPL_comment> and </TMPL_comment> are ignored. This is useful to comment some parts of template.
You can declare a block of code and call it by name: Example 4.1: <TMPL_block "foo"> <!-- Declare block with name "foo" --> ... some foo''s HTML and CTPP operators here ... </TMPL_block> <TMPL_block "bar"> <!-- Declare block with name "bar" --> ... some other HTML and/or CTPP operators here ... </TMPL_block> <TMPL_call block> <!-- Call block by name -->
There are a variety of situations when you need to represent data according to some condition. To simplify the solution of this problem CTPP support Built-in Functions. ou can call them from the bodies of <TMPL_if, <TMPL_unless, <TMPL_var and <TMPL_udf operators. The following example shows how to call Built-in function: <TMPL_var HTMLESCAPE(name)> <TMPL_if IN_SET(name, 1, 2, 3)> Variable "name" is set to "1", "2" or "3". </TMPL_if> CTPP2 support following built-in functions: * ARRAY_ELEMENT * AVG * BASE64_ENCODE * BASE64_DECODE * CAST * CONCAT * DATE_FORMAT * DEFAULT * DEFINED * FORM_PARAM * GETTEXT (_) * HMAC_MD5 * HASH_ELEMENT * HREF_PARAM * HTMLESCAPE * ICONV * IN_SET * JSESCAPE * JSON * LIST_ELEMENT * LOG * MD5 * MAX * MB_SIZE * MB_SUBSTR * MB_TRUNCATE * MIN * NUM_FORMAT * NUMERAL * OBJ_DUMP * RANDOM * SIZE * SUBSTR * SPRINTF * TRUNCATE * URIESCAPE * URLESCAPE * VERSION * WMLESCAPE * XMLESCAPE Please refer to CTPP2 library documentation to get detailed information about these functions.
Call new() to create a new HTML::CTPP2 object: my $T = new HTML::CTPP2(); You can also change some internal variables of CTPP engine: my $T = new HTML::CTPP2(arg_stack_size => 1024, code_stack_size => 1024, steps_limit => 1024*1024, max_functions => 1024, source_charset => 'CP1251', destination_charset => 'utf-8'); 'arg_stack_size' - Max. size of stack of arguments 'code_stack_size' - Max. stack size 'max_functions' - Max. number of functions in CTPP standard library Normally you should not change these parameters, to explanation please refer to CTPP library documentation. 'source_charset' - source charcter set 'destination_charset' - destination character set. Use these options for on-the-fly charset converting of template output. 'steps_limit' - template execution limit (in steps). Default value is 1 048 576 (1024*1024). You can limit template execution time by specifying this parameter. Note, if execution limit is reached, template engine generates error (returm avlue of method `output` is undef, and you should use `get_last_error` method to get full error description.
my %Hash = ("foo" => "bar", "blahblah" => "clah-clah"); $T -> param(\%H);
$T -> clear_params(); or $T -> reset();
$T -> json_param('{ "foo": "bar", "baz" : 123}');
In most situations you can print this directly to standard output: print $T -> output($bytecode); or my $SourceCharset = 'iso-8859-5'; my $DestinationCharset = 'utf-8'; my $Result = $T -> output($Bytecode, $SourceCharset, $DestinationCharset);
my @IncludeDirs = ("/home/www/tmpl", "/usr/share/www/common_templates"); $T -> include_dirs(\@IncludeDirs); CTPP parser will search templates in specified directories.
my $bytecode = $T -> parse_template("hello.tmpl");
my $bytecode = $T -> load_bytecode("hello.ct2"); ATTENTION: you should specify FULL path to precompiled file, CTPP DOES NOT uses include_dirs to search bytecode!
my $bytecode = $T -> parse_text("<TMPL_var hello>");
print $T -> dump_params();
Since you have compiled template to bytecode you may store it in file. This increases speed of loading template. # Parse template my $bytecode = $T -> parse_template("hello.tmpl"); # Save bytecode to binary file $bytecode -> save("hello.ct2"); # Now we can load compiled template without parsing original file my $other_bytecode = $T -> load_bytecode("hello.ct2");
If you have a shared library wich contains compiled user-defined functions, you may load it by calling method load_udf(). Please refer to documentation to explain, how you can write user-defined CTPP functions in C++. $T -> load_udf('/shared/library/name.so', 'UserDefinedFunctionName');
Your can get detailed description if any error occured. Method return a hash reference with set of following keys: 'template_name' - template file name where error occured 'line' - line in template file 'pos' - position in file 'ip' - virtual machine instruction pointer 'error_code' - error code, integer number 'error_str' - human-readable error description my $e = $T -> get_last_error(); print "In file " . $e -> {'template_name'} . " at line " . $e -> {'line'} . ", pos " . $e -> {'pos'} . ": " . $e -> {'error_str'} . ", error code " . $e -> {'error_code'};
Andrei V. Shetuhin (reki@reki.ru)
perl(1), HTML::Template(3), HTML::Template::Pro(3)
http://ctpp.havoc.ru/en/ - in English
http://ctpp.havoc.ru/ - for Russian speakers
Copyright (c) 2006 - 2010 CTPP Team Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 4. Neither the name of the CTPP Team nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1 POD Error
The following errors were encountered while parsing the POD:
Non-ASCII character seen before =encoding in '"Àíäðåé"'. Assuming CP1252
To install HTML::CTPP2, copy and paste the appropriate command in to your terminal.
cpanm
cpanm HTML::CTPP2
CPAN shell
perl -MCPAN -e shell install HTML::CTPP2
For more information on module installation, please visit the detailed CPAN module installation guide.