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TTREE(1)              User Contributed Perl Documentation             TTREE(1)

       Template::Tools::ttree - Process entire directory trees of templates

           ttree [options] [files]

       The ttree script is used to process entire directory trees containing template files.  The resulting output
       from processing each file is then written to a corresponding file in a destination directory.  The script
       compares the modification times of source and destination files (where they already exist) and processes only
       those files that have been modified.  In other words, it is the equivalent of 'make' for the Template Toolkit.

       It supports a number of options which can be used to configure behaviour, define locations and set Template
       Toolkit options.  The script first reads the .ttreerc configuration file in the HOME directory, or an
       alternative file specified in the TTREERC environment variable.  Then, it processes any command line arguments,
       including any additional configuration files specified via the "-f" (file) option.

   The .ttreerc Configuration File
       When you run ttree for the first time it will ask you if you want it to create a .ttreerc file for you.  This
       will be created in your home directory.

           $ ttree
           Do you want me to create a sample '.ttreerc' file for you?
           (file: /home/abw/.ttreerc)   [y/n]: y
           /home/abw/.ttreerc created.  Please edit accordingly and re-run ttree

       The purpose of this file is to set any global configuration options that you want applied every time ttree is
       run. For example, you can use the "ignore" and "copy" / "link" options to provide regular expressions that
       specify which files should be ignored and which should be copied or linked rather than being processed as
       templates.  You may also want to set flags like "verbose" and "recurse" according to your preference.

       A minimal .ttreerc:

           # ignore these files
           ignore = \b(CVS|RCS)\b
           ignore = ^#
           ignore = ~$

           # copy these files
           copy   = \.(gif|png|jpg|pdf)$

           # recurse into directories

           # provide info about what's going on

       In most cases, you'll want to create a different ttree configuration file for each project you're working on.
       The "cfg" option allows you to specify a directory where ttree can find further configuration files.

           cfg = /home/abw/.ttree

       The "-f" command line option can be used to specify which configuration file should be used.  You can specify a
       filename using an absolute or relative path:

           $ ttree -f /home/abw/web/example/etc/ttree.cfg
           $ ttree -f ./etc/ttree.cfg
           $ ttree -f ../etc/ttree.cfg

       If the configuration file does not begin with "/" or "." or something that looks like a MS-DOS absolute path
       (e.g. "C:\\etc\\ttree.cfg") then ttree will look for it in the directory specified by the "cfg" option.

           $ ttree -f test1          # /home/abw/.ttree/test1

       The "cfg" option can only be used in the .ttreerc file.  All the other options can be used in the .ttreerc or
       any other ttree configuration file.  They can all also be specified as command line options.

       Remember that .ttreerc is always processed before any configuration file specified with the "-f" option.
       Certain options like "lib" can be used any number of times and accumulate their values.

       For example, consider the following configuration files:


           cfg = /home/abw/.ttree
           lib = /usr/local/tt2/templates


           lib = /home/abw/web/example/templates/lib

       When ttree is invoked as follows:

           $ ttree -f myconfig

       the "lib" option will be set to the following directories:


       Any templates located under /usr/local/tt2/templates will be used in preference to those located under
       /home/abw/web/example/templates/lib.  This may be what you want, but then again, it might not.  For this
       reason, it is good practice to keep the .ttreerc as simple as possible and use different configuration files
       for each ttree project.

   Directory Options
       The "src" option is used to define the directory containing the source templates to be processed.  It can be
       provided as a command line option or in a configuration file as shown here:

           src = /home/abw/web/example/templates/src

       Each template in this directory typically corresponds to a single web page or other document.

       The "dest" option is used to specify the destination directory for the generated output.

           dest = /home/abw/web/example/html

       The "lib" option is used to define one or more directories containing additional library templates.  These
       templates are not documents in their own right and typically comprise of smaller, modular components like
       headers, footers and menus that are incorporated into pages templates.

           lib = /home/abw/web/example/templates/lib
           lib = /usr/local/tt2/templates

       The "lib" option can be used repeatedly to add further directories to the search path.

       A list of templates can be passed to ttree as command line arguments.

           $ ttree foo.html bar.html

       It looks for these templates in the "src" directory and processes them through the Template Toolkit, using any
       additional template components from the "lib" directories.  The generated output is then written to the
       corresponding file in the "dest" directory.

       If ttree is invoked without explicitly specifying any templates to be processed then it will process every file
       in the "src" directory.  If the "-r" (recurse) option is set then it will additionally iterate down through
       sub-directories and process and other template files it finds therein.

           $ ttree -r

       If a template has been processed previously, ttree will compare the modification times of the source and
       destination files.  If the source template (or one it is dependant on) has not been modified more recently than
       the generated output file then ttree will not process it.  The -a (all) option can be used to force ttree to
       process all files regardless of modification time.

           $ tree -a

       Any templates explicitly named as command line argument are always processed and the modification time checking
       is bypassed.

   File Options
       The "ignore", "copy", "link" and "accept" options are used to specify Perl regexen to filter file names. Files
       that match any of the "ignore" options will not be processed. Remaining files that match any of the "copy" or
       "link" regexen will be copied or linked to the destination directory. Remaining files that then match any of
       the "accept" criteria are then processed via the Template Toolkit. If no "accept" parameter is specified then
       all files will be accepted for processing if not already copied or ignored.

           # ignore these files
           ignore = \b(CVS|RCS)\b
           ignore = ^#
           ignore = ~$

           # copy these files
           copy   = \.(gif|png|jpg|pdf)$

           # accept only .tt2 templates
           accept = \.tt2$

       The "suffix" option is used to define mappings between the file extensions for source templates and the
       generated output files.  The following example specifies that source templates with a ".tt2" suffix should be
       output as ".html" files:

           suffix tt2=html

       Or on the command line,

           --suffix tt2=html

       You can provide any number of different suffix mappings by repeating this option.

       The "binmode" option is used to set the encoding of the output file.  For example use "--binmode=:utf8" to set
       the output format to unicode.

   Template Dependencies
       The "depend" and "depend_file" options allow you to specify how any given template file depends on another file
       or group of files.  The "depend" option is used to express a single dependency.

         $ ttree --depend foo=bar,baz

       This command line example shows the "--depend" option being used to specify that the foo file is dependant on
       the bar and baz templates.  This option can be used many time on the command line:

         $ ttree --depend foo=bar,baz --depend crash=bang,wallop

       or in a configuration file:

         depend foo=bar,baz
         depend crash=bang,wallop

       The file appearing on the left of the "=" is specified relative to the "src" or "lib" directories.  The file(s)
       appearing on the right can be specified relative to any of these directories or as absolute file paths.

       For example:

         $ ttree --depend foo=bar,/tmp/baz

       To define a dependency that applies to all files, use "*" on the left of the "=".

         $ ttree --depend *=header,footer

       or in a configuration file:

         depend *=header,footer

       Any templates that are defined in the "pre_process", "post_process", "process" or "wrapper" options will
       automatically be added to the list of global dependencies that apply to all templates.

       The "depend_file" option can be used to specify a file that contains dependency information.

           $ ttree --depend_file=/home/abw/web/example/etc/ttree.dep

       Here is an example of a dependency file:

          # This is a comment. It is ignored.

          index.html: header footer menubar

          header: titlebar hotlinks

          menubar: menuitem

          # spanning multiple lines with the backslash
          another.html: header footer menubar \
          sidebar searchform

       Lines beginning with the "#" character are comments and are ignored.  Blank lines are also ignored.  All other
       lines should provide a filename followed by a colon and then a list of dependant files separated by whitespace,
       commas or both.  Whitespace around the colon is also optional.  Lines ending in the "\" character are continued
       onto the following line.

       Files that contain spaces can be quoted. That is only necessary for files after the colon (':'). The file
       before the colon may be quoted if it contains a colon.

       As with the command line options, the "*" character can be used as a wildcard to specify a dependency for all

           * : config,header

   Template Toolkit Options
       ttree also provides access to the usual range of Template Toolkit options.  For example, the "--pre_chomp" and
       "--post_chomp" ttree options correspond to the "PRE_CHOMP" and "POST_CHOMP" options.

       Run "ttree -h" for a summary of the options available.

       Andy Wardley <>


       With contributions from Dylan William Hardison (support for dependencies), Bryce Harrington ("absolute" and
       "relative" options), Mark Anderson ("suffix" and "debug" options), Harald Joerg and Leon Brocard who gets
       everywhere, it seems.

       2.68, distributed as part of the Template Toolkit version 2.19, released on 27 April 2007.

         Copyright (C) 1996-2007 Andy Wardley.  All Rights Reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.


perl v5.10.1                      2012-02-08                          TTREE(1)