Provided by: libembperl-perl_2.5.0-16build1_amd64 
NAME
Embperl::Config - Embperl configuration and calling
Operating-Modes
Embperl can operate in one of four modes:
mod_perl
The mostly used way is to use Embperl together with mod_perl and Apache. This gives the best
performance and the most possibilities.
CGI/FastCGI
When you want to run Embperl on a machine that doesn't have mod_perl, you can run Embperl also as
normal CGI script. Due to the overhead of CGI, this mode is much slower. To get a better performance
you should consider using Embperl together with FastCGI. (http://www.fastcgi.com).
Offline
You can use Embperl also on the command line. This is useful for generating static content out of
dynamic pages and can sometime be helpful for testing.
Call it from other Perl programs
If you have your own application and want to use Embperl's capbilities you can do so by calling
Embperl::Execute. This allows you to build your own application logic and use Embperl possibilities
for rendering content.
mod_perl
To use Embperl under mod_perl you must have installed Apache and mod_perl on your system. Then you add
some directives to your httpd.conf to load Embperl and add "Embperl" as the "PerlHandler". The following
directives will cause all file with extetion epl to be handled by Embperl:
PerlModule Embperl
AddType text/html .epl
<Files *.epl>
SetHandler perl-script
PerlHandler Embperl
Options ExecCGI
</files>
Another possibility is to have all files under a special location processed by Embperl:
PerlModule Embperl
Alias /embperl /path/to/embperl/eg
<Location /embperl/x>
SetHandler perl-script
PerlHandler Embperl
Options ExecCGI
</Location>
In this setup you should make sure that non Embperl files like images doesn't served from this directory.
For mod_perl 2.0 you need addtionaly to load the dynamic object library of Embperl. This is necessary so
Embperl is loaded early enough to register the configuration directives with Apache. After installing,
search underneath your Perl site directory for the library. On Unix it is mostly called Embperl.so on
Windows it is called "Embperl.dll". Now add the following line to your httpd.conf before any of the
Embperl configuration directives, but after mod_perl.so is loaded:
LoadModule embperl_module /path/to/perl/site/lib/Embperl/Embperl.so
To use Embperl::Object you use the "Embperl::Object" as "PerlHandler":
<Location /foo>
Embperl_AppName unique-name
Embperl_Object_Base base.htm
Embperl_UriMatch "\.htm.?|\.epl$"
SetHandler perl-script
PerlHandler Embperl::Object
Options ExecCGI
</Location>
Addtionaly you can setup other parameters for Embperl::Object. If you do so inside a container (like
"<Location", <Directory>, <Files>>) you need to set "Embperl_AppName" to a unique-name (the actual value
doesn't matter). The "Embperl_UriMatch" makes sure that only files of the requested type are served by
Embperl::Object, while all others are served by Apache as usual.
For more information see: "perldoc Embperl::Object".
Embperl accepts a lot of configuration directives to customize it's behaviour. See the next section for a
description.
NOTE: If mod_perl is statically linked into Apache you can not use ClearModuleList in your httpd.conf
Preloading pages
To optimize memory usage you can preload your pages during the initialization. If you do so they will get
loaded into the parent process and the memory will be shared by all child processes.
To let Embperl preload your files, you have to supply all the filename into the key preloadfiles of the
hash %initparam, before you load Embperl.
Example:
BEGIN
{
$Embperl::initparam{preloadfiles} =
[
'/path/to/foo.epl',
'/path/to/bar.epl',
{ inputfile => "/path/to/other.epl", input_escmode => 7 },
] ;
}
use Embperl ;
As you see for the third file, it is also possible to give a hashref and supply the same parameter like
Execute accpets (see below).
NOTE: Preloading is not supported under Apache 1.3, when mod_perl is loaded as DSO. To use preloading
under Apache 1.3 you need to compile mod_perl statically into Apache.
CGI/FastCGI
To use this mode you must copy embpcgi.pl to your cgi-bin directory. You can invoke it with the URL
http://www.domain.xyz/cgi-bin/embpcgi.pl/url/of/your/document.
The /url/of/your/document will be passed to Embperl by the web server. Normal processing (aliasing,
etc.) takes place before the URI makes it to PATH_TRANSLATED.
If you are running the Apache httpd, you can also define embpcgi.pl as a handler for a specific file
extension or directory.
Example of Apache "httpd.conf":
<Directory /path/to/your/html/docs>
Action text/html /cgi-bin/embperl/embpcgi.pl
</Directory>
NOTE: Via CGI Scripts it maybe possible to bypass some of the Apache setup. To avoid this use
Embperl_Allow to restrict access to the files, which should be processed by Embperl.
For Embperl::Object you have to use epocgi.pl instead of embpcgi.pl.
You can also run Embperl with FastCGI, in this case use embpfastcgi.pl as cgi script. You must have
FCGI.pm installed.
Offline
Run Embperl from the comannd line use embpexec.pl on unix and embpexec.bat on windows:
embpexec.pl [options] htmlfile [query_string]
embpexec.bat [options] htmlfile [query_string]
htmlfile
The full pathname of the source file which should be processed by Embperl.
query_string
Optional. Has the same meaning as the environment variable QUERY_STRING when invoked as a CGI script.
That is, QUERY_STRING contains everything following the first "?" in a URL. <query_string> should be
URL-encoded. The default is no query string.
Options:
-o outputfile
Optional. Gives the filename to which the output is written. The default is stdout.
-l logfile
Optional. Gives the filename of the logfile. The default is /tmp/embperl.log on unix and
\embperl.log on windows.
-d debugflags
Optional. Specifies the level of debugging (what is written to the log file). The default is nothing.
See "EMBPERL_DEBUG" for exact values.
-t options
See "EMBPERL_OPTIONS" for option values.
-s syntax
Defines the syntax of the source. See See "EMBPERL_SYNTAX"
-p param
Gives a value which is passed in the @param array to the executed page. Can be given multiple times.
-f fdat value
Gives a name/value pair which is passed in the %fdat hash to the executed page. Can be given
multiple times.
By calling Embperl::Execute (\%param)
"Execute" can be used to call Embperl from your own modules/scripts (for example from a Apache::Registry
or CGI script) or from within another Embperl page to nest multiple Embperl pages (for example to store a
common header or footer in a different file).
(See eg/x/Excute.pl for more detailed examples)
When you want to use Embperl::Object call "Embperl::Object::Execute", when you want Embperl::Mail, call
"Embperl::Mail::Execute".
There are two forms you can use for calling Execute. A short form which only takes a filename and
optional additional parameters or a long form which takes a hash reference as its argument.
Execute($filename, $p1, $p2, $pn) ;
This will cause Embperl to interpret the file with the name $filename and, if specified, pass any
additional parameters in the array @param (just like @_ in a Perl subroutine). The above example could
also be written in the long form:
Execute ({inputfile => $filename,
param => [$p1, $p2, $pn]}) ;
The possible items for hash of the long form are are descriped in the configuration section and parameter
section.
EXAMPLES for Execute:
# Get source from /path/to/your.html and
# write output to /path/to/output'
Embperl::Execute ({ inputfile => '/path/to/your.html',
outputfile => '/path/to/output'}) ;
# Get source from scalar and write output to stdout
# Don't forget to modify mtime if $src changes
$src = '<html><head><title>Page [+ $no +]</title></head>' ;
Embperl::Execute ({ inputfile => 'some name',
input => \$src,
mtime => 1 }) ;
# Get source from scalar and write output to another scalar
my $src = '<html><head><title>Page [+ $no +]</title></head>' ;
my $out ;
Embperl::Execute ({ inputfile => 'another name',
input => \$src,
mtime => 1,
output => \$out }) ;
print $out ;
# Include a common header in an Embperl page,
# which is stored in /path/to/head.html
[- Execute ('/path/to/head.html') -]
Debugging
Starting with 2.0b2 Embperl files can debugged via the interactive debugger. The debugger shows the
Embperl page source along with the correct linenumbers. You can do anything you can do inside a normal
Perl program via the debugger, e.g. show variables, modify variables, single step, set breakpoints etc.
You can use the Perl interacive command line debugger via
perl -d embpexec.pl file.epl
or if you prefer a graphical debugger, try ddd (http://www.gnu.org/software/ddd/) it's a great tool, also
for debugging any other perl script:
ddd --debugger 'perl -d embpexec.pl file.epl'
NOTE: embpexec.pl could be found in the Embperl source directory
If you want to debug your pages, while running under mod_perl, Apache::DB is the right thing. Apache::DB
is available from CPAN.
Configuration
Configuration can be setup in different ways, depending how you run Embperl. When you run under
mod_perl, Embperl add a set of new configuration directives to the Apache configuration, so you can set
them in your httpd.conf. When you run Embperl as CGI it takes the configuration from environment
variables. For compatibility reason that can also be turned on under mod_perl, by adding "Embperl_UseEnv
on" in your httpd.conf. When you call Embperl from another Perl program, by calling the "Execute"
function, you can pass your configuration along with other parameters as a hash reference. If you pass
"use_env =< 1" als parameter Embperl will also scan the environment for configuration information.
Last but not least you can pass configuration information as options when you run Embperl via embpexec.pl
from the command line. Some of the configuration options are also setable inside the page via the Empberl
objects and you can read the current configuration from these objects.
You can not only pass configuration in different ways, there are also three different contexts:
Application, Request and Component. A application describes a set of pages/files that belongs together
and form the application. Application level configuration are the same for all files that belongs to an
application. These configuration information need to be known before any request processing takes place,
so they can't be modified during a request. Every application has it's own name. You can refer the
configuration of an application, by simply setting the name of the application to use.
Request level configuration information applies to one request, some of them must be known before the
request starts, some of them can still be modified during the request.
Configuration for components can be setup before the request, but can also be passed as argument when you
call the component via "Execute".
Embperl_Useenv
Env:
EMBPERL_USEENV
Method:
$application -> config -> use_env [read only]
Default:
off unless running as CGI script
Since:
2.0b6
Tells Embperl to scan the enviromemt for configuration settings.
use_redirect_env
Method:
$application -> config -> use_redirect_env [read only]
Default:
off unless running as CGI script
Since:
2.0b6
Tells Embperl to scan the enviromemt for configuration settings which has the prefix "REDIRECT_". This is
normally the case when the request is not the main request, but a subrequest.
Embperl_Appname
Env:
EMBPERL_APPNAME
Method:
$application -> config -> app_name [read only]
Since:
2.0b6
Specifies the name for an application. The name is basically used to refer to this application elsewhere
in httpd.conf without the need to setup the parameters for the apllication again.
Embperl_App_Handler_Class
Env:
EMBPERL_APP_HANDLER_CLASS
Method:
$application -> config -> app_handler_class [read only]
Since:
2.0b6
Embperl will call the "init" method of the given class at the start of the request, but after all request
parameters are setup. This give the class a chance to do any necessary computation and modify the request
parameters, before the request is actualy executed. See internationalization for an example.
Embperl_Session_Handler_Class
Env:
EMBPERL_SESSION_HANDLER_CLASS
Method:
$application -> config -> session_handler_class [read only]
Default:
Apache::SessionX
Since:
1.3b3
See also:
Session Handling
Set the class that performs the Embperl session handling. This gives you the possibility to implement
your own session handling.
NOTE: Default until 1.3.3 was "HTML::Embperl::Session", starting with 1.3.4 it is "Apache::SessionX". To
get the old session behaviour set it to "HTML::Embperl::Session".
Embperl_Session_Args
Env:
EMBPERL_SESSION_ARGS
Method:
$application -> config -> session_args [read only]
Since:
1.3b3
See also:
Session Handling
List of arguments for Apache::Session classes Arguments that contains spaces can be quoted. Example:
EMBPERL_SESSION_ARGS "DataSource=dbi:mysql:session UserName=www 'Password=secret word'"
Embperl_Session_Classes
Env:
EMBPERL_SESSION_CLASSES
Method:
$application -> config -> session_classes [read only]
Since:
1.3b3
See also:
Session Handling
Space separated list of object store and lock manager (and optionally the serialization and id generating
class) for Apache::Session (see "Session handling")
Embperl_Session_Config
Env:
EMBPERL_SESSION_CONFIG
Method:
$application -> config -> session_config [read only]
Default:
given when running Makefile.PL of Apache::SessionX
Since:
1.3.3
See also:
Session Handling
Selects a session configuration from the configurations you have defined when running Apache::SessionX's
"Makefile.PL".
NOTE: Use either "EMBPERL_SESSION_CONFIG" or "EMBPERL_SESSION_ARGS" and "EMBPERL_SESSION_CLASSES"
Embperl_Cookie_Name
Env:
EMBPERL_COOKIE_NAME
Method:
$application -> config -> cookie_name [read only]
Default:
EMBPERL_UID
Since:
1.2b4
See also:
Session Handling
Set the name that Embperl uses when it sends the cookie with the session id.
Embperl_Cookie_Domain
Env:
EMBPERL_COOKIE_DOMAIN
Method:
$application -> config -> cookie_domain [read only]
Default:
none
Since:
1.2b4
See also:
Session Handling
Set the domain that Embperl uses for the cookie with the session id.
Embperl_Cookie_Path
Env:
EMBPERL_COOKIE_PATH
Method:
$application -> config -> cookie_path [read only]
Default:
none
Since:
1.2b4
See also:
Session Handling
Set the path that Embperl uses for the cookie with the session id.
Embperl_Cookie_Expires
Env:
EMBPERL_COOKIE_EXPIRES
Method:
$application -> config -> cookie_expires [read only]
Default:
at the end of the session
Since:
1.3b5
See also:
Session Handling
Set the expiration date that Embperl uses for the cookie with the session id. You can specify the full
date or relativ values. The following forms are all valid times:
+30s 30 seconds from now
+10m ten minutes from now
+1h one hour from now
-1d yesterday (i.e. "ASAP!")
now immediately
+3M in three months
+10y in ten years time
Thu, 25-Apr-1999 00:40:33 GMT at the indicated time & date
Embperl_Cookie_Secure
Env:
EMBPERL_COOKIE_SECURE
Method:
$application -> config -> cookie_secure [read only]
Default:
at the end of the session
Since:
2.0b9
See also:
Session Handling
Set the secure flag of cookie that Embperl uses for the session id. If set the cookie will only be
transferred over a secured connection.
Embperl_Log
Env:
EMBPERL_LOG
Method:
$application -> config -> log [read only]
Default:
Unix: /tmp/embperl.log Windows: /embperl.log
Gives the location of the log file. This will contain information about what Embperl is doing. The
amount of information depends on the debug settings (see "EMBPERL_DEBUG" below). The log output is
intended to show what your embedded Perl code is doing and to help debug it.
Embperl_Debug
Env:
EMBPERL_DEBUG
Method:
$application -> config -> debug
This is a bitmask which specifies what should be written to the log. To specify multiple debugflags,
simply add the values together. You can give the value a decimal, octal (prefix 0) or hexadecimal
(prefix 0x) value. You can also use the constants defined in Embperl::Constant. The following values
are defined:
dbgStd = 1 (0x1)
Show minimum information.
dbgMem = 2 (0x2)
Show memory and scalar value allocation.
dbgEval = 4 (0x4)
Show arguments to and results of evals.
dbgEnv = 16 (0x10)
List every request's environment variables.
dbgForm = 32 (0x20)
List posted form data.
dbgInput = 128 (0x80)
Show processing of HTML input tags.
dbgFlushOutput = 256 (0x100)
Flush Embperl's output after every write. This should only be set to help debug Embperl crashes, as
it drastically slows down Embperl's operation.
dbgFlushLog = 512 (0x200)
Flush Embperl's logfile output after every write. This should only be set to help debug Embperl
crashes, as it drastically slows down Embperl's operation.
dbgLogLink = 8192 (0x2000)
This feature is not yet implemented in Embperl 2.0!
Inserts a link at the top of each page which can be used to view the log for the current HTML file.
See also "EMBPERL_VIRTLOG".
Example:
EMBPERL_DEBUG 10477
EMBPERL_VIRTLOG /embperl/log.htm
<Location /embperl/log.htm>
SetHandler perl-script
PerlHandler Embperl
Options ExecCGI
</Location>
dbgDefEval = 16384 (0x4000)
Shows every time new Perl code is compiled.
dbgHeadersIn = 262144 (0x40000)
Log all HTTP headers which are sent from and to the browser.
dbgShowCleanup = 524288 (0x80000)
Show every variable which is undef'd at the end of the request. For scalar variables, the value
before undef'ing is logged.
dbgSession = 2097152 (0x200000)
Enables logging of session transactions.
dbgImport = 4194304 (0x400000)
Show how subroutines are imported in other namespaces.
dbgOutput = 0x08000
Logs the process of converting the internal tree strcuture to plain text for output
dbgDOM = 0x10000
Logs things related to processing the internal tree data structure of documents
dbgRun = 0x20000
Logs things related to execution of a document
dbgBuildToken = 0x800000
Logs things related to creating the token tables for source parsing
dbgParse = 0x1000000
Logs the parseing of the source
dbgObjectSearch = 0x2000000
Shows how Embperl::Objects searches sourcefiles
dbgCache = 0x4000000
Logs cache related things
dbgCompile = 0x8000000
Gives information about compiling the parsed source to Perl code
dbgXML = 0x10000000
Logs things related to XML processing
dbgXSLT = 0x20000000
Logs things related to XSLT processing
dbgCheckpoint = 0x40000000
Logs things related to checkpoints which are internaly used during execution. This information is
only useful if you have a deep knowledge of Embperl internals.
Embperl_Maildebug
Env:
EMBPERL_MAILDEBUG
Method:
$application -> config -> maildebug
Since:
1.2.1
Debug value pass to Net::SMTP.
Embperl_Mailhost
Env:
EMBPERL_MAILHOST
Method:
$application -> config -> mailhost
Default:
localhost
Specifies which host the mail related functions of Embperl uses as SMTP server.
Embperl_Mailhelo
Env:
EMBPERL_MAILHELO
Method:
$application -> config -> mailhelo
Default:
chosen by Net::SMTP
Since:
1.3b4
Specifies which host/domain all mailrealted function uses in the HELO/EHLO command. A reasonable default
is normally chosen by Net::SMTP, but depending on your installation it may necessary to set it manualy.
Embperl_Mailfrom
Env:
EMBPERL_MAILFROM
Method:
$application -> config -> mailfrom
Default:
www-server@<server_name>
Since:
1.2.1
Specifies the email address that is used as sender all mailrelted function.
Embperl_Mail_Errors_To
Env:
EMBPERL_MAIL_ERRORS_TO
Method:
$application -> config -> mail_errors_to
If set all errors will be send to the email address given.
Embperl_Mail_Errors_Limit
Env:
EMBPERL_MAIL_ERRORS_LIMIT
Method:
$application -> config -> mail_errors_limit [read only]
Since:
2.0b6
Do not mail more then <num> errors. Set to 0 for no limit.
Embperl_Mail_Errors_Reset_Time
Env:
EMBPERL_MAIL_ERRORS_RESET_TIME
Method:
$application -> config -> mail_errors_reset_time [read only]
Since:
2.0b6
Reset error counter if for <sec> seconds no error has occurred.
Embperl_Mail_Errors_Resend_Time
Env:
EMBPERL_MAIL_ERRORS_RESEND_TIME
Method:
$application -> config -> mail_errors_resend_time [read only]
Since:
2.0b6
Mail errors of <sec> seconds regardless of the error counter.
Embperl_Object_Base
Env:
EMBPERL_OBJECT_BASE
Method:
$application -> config -> object_base [read only]
Default:
_base.epl
Since:
1.3b1
Name of the base page that Embperl::Objects searches for.
Embperl_Object_App
Env:
EMBPERL_OBJECT_APP
Method:
$application -> config -> object_app
Since:
2.0b6
Filename of the application object that Embperl::Object searches for. The file should contain the Perl
code for the application object. There must be no package name given (as the package is set by
Embperl::Object) inside the file, but the @ISA should point to Embperl::App. If set this file is
searched through the same search path as any content file. After a successful load the init method is
called with the Embperl request object as parameter. The init method can change the parameters inside the
request object to influence the current request.
Embperl_Object_Addpath
Env:
EMBPERL_OBJECT_ADDPATH
Method:
$application -> config -> object_addpath
Since:
1.3b1
Additional directories where Embperl::Object searches for pages.
This search through the searchpath is always performed if in a call to Execute no path for the file is
given.
In httpd.conf or as environment variable directories are separated by ";" (on Unix ":" works also). The
parameter for "Execute" and the application object method expects/returns an array reference. This path
is always appended to the searchpath.
Embperl_Object_Reqpath
Env:
EMBPERL_OBJECT_REQPATH
Method:
$application -> config -> object_reqpath
Since:
2.0b12
Additional directories where Embperl::Object searches for files for the initial request.
If a file is requested, but cannot be found at the given location, the directories given in the this path
are additionally searched for the file. This applies only to the initial filename given to
Embperl::Object and not to files called via Execute.
In httpd.conf or as environment variable directories are separated by ";" (on Unix ":" works also). The
parameter for "Execute" and the application object method expects/returns an array reference.
Example:
if you say
Embperl_Object_Reqpath /a:/b:/c
and you request
/x/index.epl
it will try
/x/index.epl
/a/index.epl
/b/index.epl
/c/index.epl
and take the first one that is found.
Embperl_Object_Stopdir
Env:
EMBPERL_OBJECT_STOPDIR
Method:
$application -> config -> object_stopdir
Since:
1.3b1
Directory where Embperl::Object stops searching for the base page.
Embperl_Object_Fallback
Env:
EMBPERL_OBJECT_FALLBACK
Method:
$application -> config -> object_fallback
Since:
1.3b1
If the requested file is not found by Embperl::Object, the file given by "EMBPERL_OBJECT_FALLBACK" is
displayed instead. If "EMBPERL_OBJECT_FALLBACK" isn't set a staus 404, NOT_FOUND is returned as usual. If
the fileame given in "EMBPERL_OBJECT_FALLBACK" doesn't contain a path, it is searched thru the same
directories as "EMBPERL_OBJECT_BASE".
Embperl_Object_Handler_Class
Env:
EMBPERL_OBJECT_HANDLER_CLASS
Method:
$application -> config -> object_handler_class
Since:
1.3b1
If you specify this, the template base and the requested page inherit all methods from this class. This
class must contain "Embperl::Req" in his @ISA array.
Embperl_Useenv
Env:
EMBPERL_USEENV
Method:
$request -> config -> use_env [read only]
Default:
off unless running as CGI script
Since:
2.0b6
Tells Embperl to scan the enviromemt for configuration settings.
use_redirect_env
Method:
$request -> config -> use_redirect_env [read only]
Default:
off unless running as CGI script
Since:
2.0b6
Tells Embperl to scan the enviromemt for configuration settings which has the prefix "REDIRECT_". This is
normally the case when the request is not the main request, but a subrequest.
Embperl_Allow
Env:
EMBPERL_ALLOW
Method:
$request -> config -> allow [read only]
Default:
no restrictions
Since:
1.2b10
If specified, only files which match the given perl regular expression will be processed by Embperl. All
other files will return FORBIDDEN. This is especially useful in a CGI environment by making the server
more secure.
Embperl_Urimatch
Env:
EMBPERL_URIMATCH
Method:
$request -> config -> urimatch [read only]
Default:
process all files
Since:
2.0b6
If specified, only files which match the given perl regular expression will be processed by Embperl, all
other files will be handled by the standard Apache handler. This can be useful if you have Embperl
documents and non Embperl documents (e.g. gifs) residing in the same directory.
Example:
# Only files which end with .htm will processed by Embperl
EMBPERL_URIMATCH \.htm$
Embperl_Multfieldsep
Env:
EMBPERL_MULTFIELDSEP
Method:
$request -> config -> mult_field_sep [read only]
Default:
\t
Since:
2.0b6
Specifies the character that is used to separate multiple form values with the same name.
Embperl_Path
Env:
EMBPERL_PATH
Method:
$request -> config -> path [read only]
Since:
1.3b6
Can contain a semicolon (also colon under Unix) separated file search path. When a file is processed and
the filename isn't an absolute path or does not start with ./ (or .\ under windows), Embperl searches all
the specified directories for that file.
A special handling is done if the filename starts with any number of "../" i.e. refers to an upper
directory. Then Embperl strips the same number of entries at the start of the searchpath as the filename
contains "../". "Execute" and the method of the request object expects/returns a array ref.
Embperl_Debug
Env:
EMBPERL_DEBUG
Method:
$request -> config -> debug
See application configuration for an describtion of possible values
Embperl_Options
Env:
EMBPERL_OPTIONS
Method:
$request -> config -> options
This bitmask specifies some options for the execution of Embperl. To specify multiple options, simply
add the values together.
optDisableVarCleanup = 1
Disables the automatic cleanup of variables at the end of each request.
optDisableEmbperlErrorPage = 2
Tells Embperl not to send its own errorpage in case of failure, but instead show as much of the page
as possible. Errors are only logged to the log file. Without this option, Embperl sends its own
error page, showing all the errors which have occurred. If you have dbgLogLink enabled, every error
will be a link to the corresponding location in the log file. This option has no effect if
optReturnError is set.
optReturnError = 262144
With this option set, Embperl sends no output in case of an error. It returns the error back to
Apache or the calling program. When running under mod_perl this gives you the chance to use the
Apache ErrorDocument directive to show a custom error-document. Inside the ErrorDocument you can
retrieve the error messages with
$errors = $req_rec -> prev -> pnotes('EMBPERL_ERRORS') ;
where $errors is a array reference. (1.3b5+)
optShowBacktrace = 0x8000000
When set every error message not only show the sourcefiles, but all files from which this file was
called by Execute.
Embperl_Output_Mode
Env:
EMBPERL_OUTPUT_MODE
Method:
$request -> config -> output_mode
Default:
HTML
Since:
2.0b9
Set the desired output format. 0 for HTML and 1 XML. If set to XML all tags that are generated by Embperl
will contain a closing slash to conform to XML specs. e.g.
<input type="text" name="foo" />
NOTE: If you set output_mode to XML you should also change escmode to XML escaping.
Embperl_Output_Esc_Charset
Env:
EMBPERL_OUTPUT_ESC_CHARSET
Method:
$request -> config -> output_esc_charset [read only]
Default:
ocharsetLatin1 = 1
Since:
2.0.2
Set the charset which to assume when escaping. This can only be set before the request starts (e.g.
httpd.conf or top of the page). Setting it inside the page has undefined results.
ocharsetUtf8 = 0
UTF-8 or any non known charset. Characters with codes above 128 will not be escaped at all
ocharsetLatin1 = 1
ISO-8859-1, the default. When a Perl string has it's utf-8 bit set, this mode will behave the same as
mode 0, i.e. will not escape anything above 128.
ocharsetLatin2 = 2
ISO-8859-2. When a Perl string has it's utf-8 bit set, this mode will behave the same as mode 0, i.e.
will not escape anything above 128.
Embperl_Session_Mode
Env:
EMBPERL_SESSION_MODE
Method:
$request -> config -> session_mode [read only]
Default:
smodeUDatCookie = 1
Since:
2.0b6
Specifies how the id for the session data is passed between requests. Possible values are:
smodeNone = 0
No session id will be passed
smodeUDatCookie = 1
The session id for the user session will be passed via cookie
smodeUDatParam = 2
The session id for the user session will append as parameter to any URL and inserted as a hidden
field in any form.
smodeUDatUrl = 4
The session id for the user session will passed as a part of the URL. NOT YET IMPLEMENTED!!
smodeSDatParam = 0x20
The session id for the state session will append as parameter to any URL and inserted as a hidden
field in any form.
You may add the UDat and SDat values together to get both sorts of sessions, for example the value 0x21
will pass the id for the user session inside a cookie and the id for the state session as parameters.
Embperl_Useenv
Env:
EMBPERL_USEENV
Method:
$component -> config -> use_env [read only]
Default:
off unless running as CGI script
Since:
2.0b6
Tells Embperl to scan the enviromemt for configuration settings.
use_redirect_env
Method:
$component -> config -> use_redirect_env [read only]
Default:
off unless running as CGI script
Since:
2.0b6
Tells Embperl to scan the enviromemt for configuration settings which has the prefix "REDIRECT_". This is
normally the case when the request is not the main request, but a subrequest.
Embperl_Package
Env:
EMBPERL_PACKAGE
Method:
$component -> config -> package
The name of the package where your code will be executed. By default, Embperl generates a unique package
name for every file. This ensures that variables and functions from one file do not conflict with those
of another file. (Any package's variables will still be accessible with explicit package names.)
Embperl_Debug
Env:
EMBPERL_DEBUG
Method:
$component -> config -> debug
See application configuration for an describtion of possible values
Embperl_Options
Env:
EMBPERL_OPTIONS
Method:
$component -> config -> options
This bitmask specifies some options for the execution of Embperl. To specify multiple options, simply
add the values together.
optDisableVarCleanup = 1
Disables the automatic cleanup of variables at the end of each request.
optDisableEmbperlErrorPage = 2
Tells Embperl not to send its own errorpage in case of failure, but instead show as much of the page
as possible. Errors are only logged to the log file. Without this option, Embperl sends its own
error page, showing all the errors which have occurred. If you have dbgLogLink enabled, every error
will be a link to the corresponding location in the log file. This option has no effect if
optReturnError is set.
optReturnError = 262144
With this option set, Embperl sends no output in case of an error. It returns the error back to
Apache or the calling program. When running under mod_perl this gives you the chance to use the
Apache ErrorDocument directive to show a custom error-document. Inside the ErrorDocument you can
retrieve the error messages with
$errors = $req_rec -> prev -> pnotes('EMBPERL_ERRORS') ;
where $errors is a array reference. (1.3b5+)
optShowBacktrace = 0x8000000
When set every error message not only show the sourcefiles, but all files from which this file was
called by Execute.
optSafeNamespace = 4
Tells Embperl to execute the embedded code in a safe namespace so the code cannot access data or code
in any other package. (See the chapter about "(Safe-)Namespaces and opcode restrictions" below for
more details.)
optOpcodeMask = 8
Tells Embperl to apply an operator mask. This gives you the chance to disallow special (unsafe)
opcodes. (See the Chapter about "(Safe-)Namespaces and opcode restrictions" below for more details.)
optDisableFormData = 256
This option disables the setup of %fdat and @ffld. Embperl will not do anything with the posted form
data. Set this when using Execute from your perl script and you have already read the Form Data (via
eg. CGI.pm).
optFormDataNoUtf8 = 0x2000000
By default Embperl checks all formfields in %fdat if they contain valid UTF-8 strings and if yes sets
Perl's internals UTF-8 flag.
If this option is set Embperl will never set the UTF-8 on any data in %fdat.
optAllFormData = 8192
This option will cause Embperl to insert all formfields in %fdat and @ffld, even if they are empty.
Empty formfields will be inserted with an empty string. Without this option, empty formfields will be
absent from %fdat and @ffld.
optRedirectStdout = 16384
Redirects STDOUT to the Embperl output stream before every request and resets it afterwards. If set,
you can use a normal Perl print inside any Perl block to output data. Without this option you can
only use output data by using the [+ ... +] block, or printing to the filehandle OUT.
optNoHiddenEmptyValue = 65536 (only 1.2b2 and above)
Normally, if there is a value defined in %fdat for a specific input field, Embperl will output a
hidden input element for it when you use hidden. When this option is set, Embperl will not output a
hidden input element for this field when the value is a blank string.
optKeepSpaces = 1048576 (only 1.2b5 and above) = 0x100000,
Disable the removal of spaces and empty lines from the output. This is useful for sources other than
HTML.
optChdirToSource = 0x10000000 (only 2.5 and above)
Change current working directory to the directory of the sourcefile, before executing the source.
Embperl_Escmode
Env:
EMBPERL_ESCMODE
Method:
$component -> config -> escmode
Default:
7
Turn HTML and URL escaping on and off.
NOTE: If you want to output binary data, you must set the escmode to zero.
For convenience you can change the escmode inside a page by setting the variable $escmode.
escXML = 8 (or 15) (2.0b4 and above)
The result of a Perl expression is always XML-escaped (e.g., `>' becomes `>' and ' become ').
escUrl + escHtml = 3 (or 7)
The result of a Perl expression is HTML-escaped (e.g., `>' becomes `>') in normal text and URL-
escaped (e.g., `&' becomes `%26') within of "A", "EMBED", "IMG", "IFRAME", "FRAME" and "LAYER" tags.
escUrl = 2 (or 6)
The result of a Perl expression is always URL-escaped (e.g., `&' becomes `%26').
escHtml = 1 (or 5)
The result of a Perl expression is always HTML-escaped (e.g., `>' becomes `>').
escNode = 0
No escaping takes place.
escEscape = 4
If you add this value to the above Embperl will always perform the escaping. Without it is possible
to disable escaping by preceding the item that normally is escaped with a backslash. While this is a
handy thing, it could be very dangerous in situations, where content that is inserted by some user is
redisplayed, because they can enter arbitrary HTML and precede them with a backslash to avoid correct
escaping when their input is redisplayed again.
NOTE: You can localize $escmode inside a [+ +] block, e.g. to turn escaping temporary off and output
$data write
[+ do { local $escmode = 0 ; $data } +]
Embperl_Input_Escmode
Env:
EMBPERL_INPUT_ESCMODE
Method:
$component -> config -> input_escmode [read only]
Default:
0
Since:
2.0b6
Tells Embperl how to handle escape sequences that are found in the source.
0 don't interpret input (default)
1 unescape html escapes to their characters (i.e. < becomes < ) inside of Perl code
2 unescape url escapes to their characters (i.e. %26; becomes & ) inside of Perl code
3 unescape html and url escapes, depending on the context
Add 4 to remove html tags inside of Perl code. This is helpful when an html editor insert html tags like
<br> inside your Perl code.
Set EMBPERL_INPUT_ESCMODE to 7 to get the old default of Embperl < 2.0b6
Set EMBPERL_INPUT_ESCMODE to 0 to get the old behaviour when optRawInput was set.
Embperl_Input_Charset
Env:
EMBPERL_INPUT_CHARSET
Method:
$component -> config -> input_charset
If set to the value "utf8" the source is interpreted as utf8 encoded so you can use utf8 literals. It has
the same effect as adding "use utf8" to a normal Perl script.
Embperl_Top_Include
Env:
EMBPERL_TOP_INCLUDE
Method:
$component -> config -> top_include
Since:
2.0b10
Give a pieces of code that is include at the very top of every file.
Example:
Embperl_Top_Include "use MY::Module;"
This will cause MY::Module to be used in every page. Note that Embperl_Top_Include must contain valid
Perl code and must be ended with a semicolon.
NOTE: If you pass top_include as parameter to Execute it is only used in case the code is compiled (or
recompiled) and not cached.
Embperl_Cache_Key
Env:
EMBPERL_CACHE_KEY
Method:
$component -> config -> cache_key [read only]
Since:
2.0b1
literal string that is appended to the cache key
Embperl_Cache_Key_Options
Env:
EMBPERL_CACHE_KEY_OPTIONS
Method:
$component -> config -> cache_key_options [read only]
Default:
all options set
Since:
2.0b1
Tells Embperl how to create a key for caching of the output
ckoptPathInfo = 2
include the PathInfo into CacheKey
ckoptQueryInfo = 4
include the QueryInfo into CacheKey
ckoptDontCachePost = 8
don't cache POST requests (not yet implemented)
Embperl_Expires_Func
Env:
EMBPERL_EXPIRES_FUNC
Method:
$component -> config -> expires_func [read only]
Since:
2.0b1
Function that is called every time before data is taken from the cache. If this function returns true,
the data from the cache isn't used anymore, but rebuilt.
Function could be either a coderef (when passed to Execute), a name of a subroutine or a string starting
with "sub " in which case it is compiled as anonymous subroutine.
NOTE: If &EXPIRES is defined inside the page, it get evaluated before the excecution of the page
Embperl_Cache_Key_Func
Env:
EMBPERL_CACHE_KEY_FUNC
Method:
$component -> config -> cache_key_func
Since:
2.0b1
function that should be called when build a cache key. The result is appended to the cache key.
Embperl_Expires_In
Env:
EMBPERL_EXPIRES_IN
Method:
$component -> config -> expires_in [read only]
Since:
2.0b1
Time in seconds that the output should be cached. (0 = never, -1 = forever)
NOTE: If $EXPIRES is set inside the page, it get evaluated before the excecution of the page
Embperl_Expires_Filename
Env:
EMBPERL_EXPIRES_FILENAME
Method:
$component -> config -> expires_filename [read only]
Since:
2.0b8
Cache should be expired when the given file is modified.
Embperl_Syntax
Env:
EMBPERL_SYNTAX
Method:
$component -> config -> syntax
Default:
Embperl
Since:
2.0b1
Used to tell Embperl which syntax to use inside a page. Embperl comes with the following syntaxes:
EmbperlHTML
all the HTML tags that Embperl recognizes by default
EmbperlBlocks
all the [ ] blocks that Embperl supports
Embperl
(default; contains EmbperlHtml and EmbperlBlocks)
ASP <% %> and <%= %>, see perldoc Embperl::Syntax::ASP
SSI Server Side Includes, see perldoc Embperl::Syntax::SSI
Perl
File contains pure Perl (similar to Apache::Registry), but can be used inside EmbperlObject
Text
File contains only Text, no actions are taken on the Text
Mail
Defines the <mail:send> tag, for sending mail. This is an example for a taglib, which could be a base
for writing your own taglib to extent the number of available tags
POD translates pod files to XML, which can be converted to the desired output format by an XSLT
transformation
RTF Can be used to process word processing documents in RTF format
You can get a description for each syntax if you type
perldoc Embperl::Syntax::xxx
where 'xxx' is the name of the syntax.
You can also specify multiple syntaxes e.g.
EMBPERL_SYNTAX "Embperl SSI"
Execute ({inputfile => '*', syntax => 'Embperl ASP'}) ;
The 'syntax' metacommand allows you to switch the syntax or to add or subtract syntaxes e.g.
[$ syntax + Mail $]
will add the Mail taglib so the <mail:send> tag is available after this line.
[$ syntax - Mail $]
now the <mail:send> tag is unknown again
[$ syntax SSI $]
now you can only use SSI commands inside your page.
Embperl_Recipe
Env:
EMBPERL_RECIPE
Method:
$component -> config -> recipe [read only]
Since:
2.0b4
Tells Embperl which recipe to use to process this component
Embperl_Xsltstylesheet
Env:
EMBPERL_XSLTSTYLESHEET
Method:
$component -> config -> xsltstylesheet [read only]
Since:
2.0b5
Tell the xslt processor which stylsheet to use.
Embperl_Xsltproc
Env:
EMBPERL_XSLTPROC
Method:
$component -> config -> xsltproc [read only]
Default:
depends on compiltime options
Since:
2.0b5
Tells Embperl which xslt processor to use. Current "libxslt" and "xalan" are supported by Embperl, but
they must be compiled in to be available.
Parameters
Parameters gives addtionaly information about the current request or the execution of the current
component. So we have two sorts of parameters Request and Component parameters. Request parameters are
automatically setup by Embperl with information Embperl takes from the current running environment. When
Embperl is invoked via the "Execute" function, you can pass any of the parameters to Execute. Component
parameters mainly reflect the parameters given to "Execute".
filename
Method:
$request -> param -> filename
Since:
2.0b6
Gives the filename of the file that was actualy requested. Inside of the applications "init" function it
can be changed to force Embperl to serve a different file.
unparsed_uri
Method:
$request -> param -> unparsed_uri
Since:
2.0b6
The full unparsed_uri, includeing the query_string and the path_info.
uri
Method:
$request -> param -> uri
Since:
2.0b6
The decoded path of the unparsed_uri.
server_addr
Method:
$request -> param -> server_addr
Since:
2.0b9
URL of the server of the current request in the form schema://addr:port/ e.g. http://perl.apache.org/
(port is omitted if it is an default port)
path_info
Method:
$request -> param -> path_info
Since:
2.0b6
The path_info, that is anything in the path after the file the is currently served.
query_info
Method:
$request -> param -> query_info
Since:
2.0b6
Any parameters passed in a GET request after the question mark. The hash %fdat will contain these values
in a already decoded and easy to use way. So it's normly more convenient to use %fdat instead.
language
Method:
$request -> param -> language
Since:
2.0b6
The primary langange found in the browser "Accept-Language" HTTP header. This value is used for all
language-dependent functions inside Embperl. You can set it change the selection of message returned by
"$request -> gettext" and "[= =]".
cookies
Method:
$request -> param -> cookies
Since:
2.0b6
A hashref that contains all cookies send by the browser to the server.
cgi
Method:
$request -> param -> cgi [read only]
Since:
2.0b12
Holds the CGI.pm object, which is used for file upload. If no file uploaded data is send to the request,
this member is undefined.
inputfile
Method:
$component -> param -> inputfile [read only]
Since:
1.0.0
Give the name of the file that should be processed, e.g.
Execute({inputfile => 'mysource.epl'}) ;
There is a shortcut when you only need to give the input file and no other parameters. The above is will
do the same as:
Execute('mysource.epl') ;
outputfile
Method:
$component -> param -> outputfile [read only]
Default:
STDOUT
Since:
1.0.0
Specify a file to which the output should be written. Example:
Execute({inputfile => 'mysource.epl',
outputfile => 'myoutput.htm'}) ;
input
Method:
$component -> param -> input [read only]
Since:
1.0.0
This parameter is used, when you have the source already in memory. You should pass a reference to a
scalar that contains the source. Addtionaly you should give the inputfile parameter, to allow Embperl
caching to keep track of different in memory sources. The mtime parameter is used to tell Embperl's
cache if the source has change since the last call or not. If "mtime" if "undef" or of a different value
as it was during the last call, the source is considered to be changed and everything is recompiled.
Example:
# Get source from scalar
# Don't forget to modify mtime if $src changes
$src = '<html><head><title>Page [+ $no +]</title></head>' ;
Embperl::Execute ({ inputfile => 'some name',
input => \$src,
mtime => 1 }) ;
output
Method:
$component -> param -> output [read only]
Since:
1.0.0
Gives the possibility to write the output into a scalar instead of sending it to stdout or a file. You
should give a reference to a scalar. Example:
Execute({inputfile => 'mysource.epl',
output => \$out}) ;
sub
Method:
$component -> param -> sub [read only]
Since:
1.2.0
Call the given Embperl subroutine defined with "[$sub$]" inside the page. A shortcut for this is to
append the name of the subroutine after the filename with a hash sign, so the following calls are doing
the same thing:
Execute('mysource.epl#mysub') ;
Execute({inputfile => 'mysource.epl',
sub => 'mysub'}) ;
If you leave out the filename, the sub is called in the current file, so this can only be used inside a
file that is already processed by Embperl.
subreq
Method:
$component -> param -> subreq
Since:
2.0b8, Apache 2.x
This utilizies Apache 2.0 filters to retrieve the output of a sub-request and uses it as input for the
current component. For example if you have a CGI-Script and you need to post process it via Embperl or
simply want to include it's output in another Embperl/Embperl::Object document you can write:
[- Execute ({subreq => '/cgi-bin/script.cgi'}) -]
NOTE: You have to specify a URI and not a filename!
import
Method:
$component -> param -> import [read only]
Since:
1.3.0
A value of one tells Embperl to define the subrountines inside the file (if not already done) and to
import them as perl subroutines into the current namespace.
See [$ sub $] metacommand and section about subroutines for more info.
A value of zero tells Embperl to simply precompile all code found in the page. (With 2.0 it is not
necessary anymore to do it before using the "sub" parameter on a different file).
firstline
Method:
$component -> param -> firstline [read only]
Default:
1
Since:
1.2.0
Specifies the first linenumber of the sourcefile.
mtime
Method:
$component -> param -> mtime [read only]
Default:
undef
Since:
1.0.0
Last modification time of parameter input. If undef the code passed by input is always recompiled, else
the code is only recompiled if mtime changes.
param
Method:
$component -> param -> param [read only]
Since:
1.0.0
Can be used to pass parameters to the Embperl document and back. Must contain a reference to an array.
Example:
Execute({inputfile => 'mysource.epl',
param => [1, 2, 3]}) ;
Execute({inputfile => 'mysource.epl',
param => \@parameters}) ;
There is a shortcut, so the following code the aquivalent (NOTE: Don't use a array ref here):
Execute('mysource.epl', 1, 2, 3) ;
Execute('mysource.epl', @parameters) ;
The array @param in the Embperl document is setup as an alias to the array. See eg/x/Excute.pl for a
more detailed example.
fdat
Method:
$component -> param -> fdat [read only]
Since:
1.0.0
Pass a hash reference to customly set %fdat. If "ffld" is not given, "ffld" will be set to "keys %fdat".
ffld
Method:
$component -> param -> ffld [read only]
Since:
1.0.0
Pass a array reference to customly set @fdat. Does not affect %fdat.
object
Method:
$component -> param -> object [read only]
Since:
1.3.2
Takes a filename and returns an hashref that is blessed into the package of the given file. That's
useful, if you want to call the subs inside the given file, as methods. By using the "isa" parameter (see
below) you are able to provide an inherence tree. Additionally you can use the returned hashref to store
data for that object. Example:
[# the file eposubs.htm defines two subs: txt1 and txt2 #]
[# first we create a new object #]
[- $subs = Execute ({'object' => 'eposubs.htm'}) -]
[# then we call methods inside the object #]
txt1: [+ $subs -> txt1 +] <br>
txt2: [+ $subs -> txt2 +] <br>
isa
Method:
$component -> param -> isa [read only]
Since:
1.3.2
Takes a name of a file and pushes the package of that file into the @ISA array of the current file. By
using this you can setup an inherence tree between Embperl documents. Is is also useful within
Embperl::Object. Example:
[! Execute ({'isa' => '../eposubs.htm'}) !]
errors
Method:
$component -> param -> errors [read only]
Since:
1.3.0
Takes a reference to an array. Upon return, the array will contain a copy of all errormessages, if any.
xsltparam
Method:
$component -> param -> xsltparam
Default:
%fdat
Since:
2.0b6
Takes a reference to hash which contains key/value pair that are accessible inside the stylesheet via
<xsl:param>.
Embperl's Objects
There are three major objects in Embperl: application, request and component. Each of these objects can
be used to get information about the processing and control the execution. Each of these objects has a
config sub-object, which makes the configuration accessible and, where possible, changeable at runtime.
The "config" method of these three objects returns a reference to the configuration object. The methods
of these configurations objects are described in the section Configuration. The request and the
component object have addtionaly a parameter sub-object, which holds parameters passed to the current
request/component. The "param" method of these two objects returns the parameter sub-object. The methods
of these parameter objects can be found in the section Parameters. Addtionaly each of the three major
objects has a set of own methods, which are described here.
thread
Method:
$application -> thread [read only]
Since:
2.0b6
Returns a reference to a object which hold per threads information. There is only one such object per
thread.
curr_req
Method:
$application -> curr_req [read only]
Since:
2.0b6
Returns a reference to the current request object i.e. the object of the request currently running.
config
Method:
$application -> config [read only]
Since:
2.0b6
Returns a reference to the configuration object of the application. See section Configuration.
user_session
Method:
$application -> user_session [read only]
Since:
2.0b6
Returns a reference to the user session object.
state_session
Method:
$application -> state_session [read only]
Since:
2.0b6
Returns a reference to the state session object.
app_session
Method:
$application -> app_session [read only]
Since:
2.0b6
Returns a reference to the application session object.
udat
Method:
$application -> udat [read only]
Since:
2.0b6
Returns a reference to a hash which contains the data of the user session. This has can be used to
access and modify user session data. It's the same as accessing the global %udat.
sdat
Method:
$application -> sdat [read only]
Since:
2.0b6
Returns a reference to a hash which contains the data of the state session. This has can be used to
access and modify state session data. It's the same as accessing the global %sdat.
mdat
Method:
$application -> mdat [read only]
Since:
2.0b6
Returns a reference to a hash which contains the data of the application session. This has can be used
to access and modify application session data. It's the same as accessing the global %mdat.
errors_count
Method:
$application -> errors_count
Since:
2.0b6
Contains the number of errors since last time send per mail. See also mail_errors_to.
errors_last_time
Method:
$application -> errors_last_time
Since:
2.0b6
Time when the last error has occurred. See also mail_errors_to.
errors_last_send_time
Method:
$application -> errors_last_send_time
Since:
2.0b6
Time when the last mail with error messages was sent. See also mail_errors_to.
apache_req
Method:
$request -> apache_req [read only]
Since:
2.0b6
Returns a reference to mod_perls Apache request object. In mod_perl 1 this is of type "Apache::" in
mod_perl 2 it's a "Apache2::RequestRec".
config
Method:
$request -> config [read only]
Since:
2.0b6
Returns a reference to the configuration object of the request. See section Configuration.
param
Method:
$request -> param [read only]
Since:
2.0b6
Returns a reference to the parameter object of the request. See section Parameters.
component
Method:
$request -> component [read only]
Since:
2.0b6
Returns a reference to the object of component currently running. See component methods below.
app
Method:
$request -> app [read only]
Since:
2.0b6
Returns a reference to the object of application to which the current request belongs. See application
methods above.
thread
Method:
$request -> thread [read only]
Since:
2.0b6
Returns a reference to a object which hold per threads information. There is only one such object per
thread.
request_count
Method:
$request -> request_count [read only]
Since:
2.0b6
Returns the number of request handled so far by this child process.
request_time
Method:
$request -> request_time [read only]
Since:
2.0b6
Start time of the current request.
session_mgnt
Method:
$request -> session_mgnt [read only]
Since:
2.0b6
Set to true if session management is available.
session_id
Method:
$request -> session_id [read only]
Since:
2.0b6
Combined id of current user and state session.
session_state_id
Method:
$request -> session_state_id [read only]
Since:
2.0b6
Id of the current state session as received by the browser, this means this method returns "undef" for a
new session.
session_user_id
Method:
$request -> session_user_id [read only]
Since:
2.0b6
Id of the current user session as received by the browser, this means this method returns "undef" for a
new session.
cookie_expires
Method:
$request -> cookie_expires
Since:
2.1.1
Can be used to retrieve the actual expiration date that Embperl uses for the cookie with the session id.
had_exit
Method:
$request -> had_exit [read only]
Since:
2.0b6
True if exit was called in one of the components processed so far.
log_file_start_pos
Method:
$request -> log_file_start_pos [read only]
Since:
2.0b6
File possition of the log file at the time when the request has started.
error
Method:
$request -> error
Since:
2.0b6
True if there were any error during the request.
errors
Method:
$request -> errors
Since:
2.0b6
Reference to an array which holds all error messages occurred so far.
errdat1
Method:
$request -> errdat1
Since:
2.0b6
Additional information passed to the error handler when an error is reported.
errdat2
Method:
$request -> errdat2
Since:
2.0b6
Additional information passed to the error handler when an error is reported.
lastwarn
Method:
$request -> lastwarn
Since:
2.0b6
Last warning message.
errobj
Method:
$request -> errobj
Since:
2.0rc3
The object passed to the last die, if any. This is useful when you pass an object to die inside an
Execute. After the Execute you can check $epreq -> errobj, to get the object. The object is also push to
the array passed to the errors parameter of Execute.
cleanup_vars
Method:
$request -> cleanup_vars
Since:
2.0b6
Reference to an array which is filled with references to variables that should be cleaned up after the
request. You can add your own variables that needs cleanup here, but you should never remove any
variables from this array.
cleanup_packages
Method:
$request -> cleanup_packages
Since:
2.0b6
Reference to a hash which contains all packages that must be cleaned up after the request.
initial_cwd
Method:
$request -> initial_cwd [read only]
Since:
2.0b6
Working directory when the request started.
messages
Method:
$request -> messages
Since:
2.0b6
Reference to an array of hashs of messages. This is used by Embperl to translate message into different
languages. When a "[= =]" block is processed or $request -> gettext is called, Embperl searches this
array. It starts from the first element in the array (each element in the array must be a hashref) and
tries to lookup the text for the given symbol in hash. When it fails it goes to the next array element.
This way you can setup multiple translation tables that are search for the symbol. Example:
%messages =
(
'de' =>
{
'addsel1' => 'Klicken Sie auf die Kategorie zu der Sie etwas hinzufügen möchten:',
'addsel2' => 'oder fügen Sie eine neue Kategorie hinzu. Bitte geben Sie die Beschreibung in so vielen Sprachen wie Ihnen möglich ein.',
'addsel3' => 'Falls Sie die Übersetzung nicht wissen, lassen Sie das entsprechende Eingabefeld leer.',
'addsel4' => 'Kategorie hinzufügen',
},
'en' =>
{
'addsel1' => 'Click on the category for which you want to add a new item:',
'addsel2' => 'or add new category. Please enter the description in as much languages as possible.',
'addsel3' => 'If you don\'t know the translation leave the corresponding input field empty.',
'addsel4' => 'Add category',
}
) ;
$lang = $request -> param -> language ;
push @{$request -> messages}, $messages{$lang} ;
push @{$request -> default_messages}, $messages{'en'} if ($lang ne 'en') ;
"$request -" param -> language> retrieves the language as given by the browser language-accept header (or
set before in your program). Then it pushes the german or english messages hash onto the message array.
Addtionaly it pushes the english messages on the default_messages array. Messages will be taken from this
array if nothing can be found in the messages array.
default_messages
Method:
$request -> default_messages
Since:
2.0b6
Reference to an array with default messages. Messages will be taken from this array if nothing can be
found in the messages array.
config
Method:
$component -> config [read only]
Since:
2.0b6
Returns an reference to the configuration object of the component.
param
Method:
$component -> param [read only]
Since:
2.0b6
Returns an reference to the parameter object of the component.
req_running
Method:
$component -> req_running [read only]
Since:
2.0b6
True if Embperl is inside of the execution of the request.
sub_req
Method:
$component -> sub_req [read only]
Since:
2.0b6
True is this is not the outermost Embperl component, i.e. this component is called from within another
component.
inside_sub
Method:
$component -> inside_sub [read only]
Since:
2.0b6
True is we are inside a Embperl subroutine ([$ sub $] ... [$ endsub $])
had_exit
Method:
$component -> had_exit [read only]
Since:
2.0b6
True if the exit was called during the excution of the component.
path_ndx
Method:
$component -> path_ndx [read only]
Since:
2.0b6
Tells Embperl how much parts of the path should be ignored when searching through the path.
cwd
Method:
$component -> cwd [read only]
Since:
2.0b6
Directory of the source file of the component.
sourcefile
Method:
$component -> sourcefile [read only]
Since:
2.0b6
Source file of the component.
syntax
Method:
$component -> syntax
Since:
2.0b6
Syntax of the component
prev
Method:
$component -> prev [read only]
Since:
2.0b6
Previous component, e.g. the component which called this component.
import_stash
Method:
$component -> import_stash [read only]
Since:
2.0b6
While importing a component this is set to the stash to which symbols are imported. "undef" during
normal execution.
exports
Method:
$component -> exports
Since:
2.0b6
Symbols that should be exported by this component.
curr_package
Method:
$component -> curr_package [read only]
Since:
2.0b6
Name of the package the component is executed in.
code
Method:
$component -> code
Since:
2.0b6
Only valid during compile phase. Can used to retrieve and modify the code Embperl is generating. See
Embperl::Syntax for more details and Embperl::Syntax::RTF for an example.
perl v5.34.0 2022-02-06 Config(3pm)