Diff for /loncom/LONCAPA.pm between versions 1.26 and 1.27

version 1.26, 2008/11/17 13:24:02 version 1.27, 2008/11/20 15:19:33
Line 27 Line 27
 #  #
 ###  ###
   
 =head1 NAME  
   
 Apache::LONCAPA  
   
 LONCAPA - Basic routines  
   
 =head1 SYNOPSIS  
   
 Generally useful routines  
   
 =head1 EXPORTED SUBROUTINES  
   
 =over 4  
   
 =item *  
   
 escape() : unpack non-word characters into CGI-compatible hex codes  
   
 =item *  
   
 unescape() : pack CGI-compatible hex codes into actual non-word ASCII character  
   
 =item *  
   
 add_get_param() :  
  Inputs:  url (with or without exit GET from parameters), hash ref of  
               form name => value pairs  
   
  Return: url with properly added the form name elements and values to the   
          the url doing proper escaping of the values and joining with ? or &  
          as needed  
   
 =back  
   
 =cut  
   
 package LONCAPA;  package LONCAPA;
   
Line 212  sub propath { Line 178  sub propath {
 }   } 
   
   
 #---------------------------------------------------------------  
   
 =pod  
   
 =out  
   
 =item tie_domain_hash()  
   
 Manipulation of hash based databases (factoring out common code  
 for later use as we refactor.  
   
  Ties a domain level resource file to a hash.  
  If requested a history entry is created in the associated hist file.  
   
  Parameters:  
     domain    - Name of the domain in which the resource file lives.  
     namespace - Name of the hash within that domain.  
     how       - How to tie the hash (e.g. GDBM_WRCREAT()).  
     loghead   - Optional parameter, if present a log entry is created  
                 in the associated history file and this is the first part  
                  of that entry.  
     logtail   - Goes along with loghead,  The actual logentry is of the  
                 form $loghead:<timestamp>:logtail.  
 Returns:  
    Reference to a hash bound to the db file or alternatively undef  
    if the tie failed.  
   
 =back  
   
 =cut  
   
 sub tie_domain_hash {  sub tie_domain_hash {
     my ($domain,$namespace,$how,$loghead,$logtail) = @_;      my ($domain,$namespace,$how,$loghead,$logtail) = @_;
           
Line 262  sub untie_domain_hash { Line 197  sub untie_domain_hash {
     return &_locking_hash_untie(@_);      return &_locking_hash_untie(@_);
 }  }
   
 =pod  
   
 =out  
   
 =item tie_user_hash()  
   
   Ties a user's resource file to a hash.    
   If necessary, an appropriate history  
   log file entry is made as well.  
   This sub factors out common code from the subs that manipulate  
   the various gdbm files that keep keyword value pairs.  
 Parameters:  
   domain       - Name of the domain the user is in.  
   user         - Name of the 'current user'.  
   namespace    - Namespace representing the file to tie.  
   how          - What the tie is done to (e.g. GDBM_WRCREAT().  
   loghead      - Optional first part of log entry if there may be a  
                  history file.  
   what         - Optional tail of log entry if there may be a history  
                  file.  
 Returns:  
   hash to which the database is tied.  It's up to the caller to untie.  
   undef if the has could not be tied.  
   
 back  
   
 =cut  
   
 sub tie_user_hash {  sub tie_user_hash {
     my ($domain,$user,$namespace,$how,$loghead,$what) = @_;      my ($domain,$user,$namespace,$how,$loghead,$what) = @_;
Line 304  sub untie_user_hash { Line 212  sub untie_user_hash {
     return &_locking_hash_untie(@_);      return &_locking_hash_untie(@_);
 }  }
   
 =pod  
   
 =out  
   
 =item locking_hash_tie()  
   
 routines if you just have a filename  
 return tied hashref or undef  
   
 =back  
   
 =cut  
   
 sub locking_hash_tie {  sub locking_hash_tie {
     my ($filename,$how)=@_;      my ($filename,$how)=@_;
Line 490  BEGIN { Line 386  BEGIN {
 __END__  __END__
   
   
   =head1 NAME
   
   Apache::LONCAPA
   
   LONCAPA - Basic routines
   
   =head1 SYNOPSIS
   
   Generally useful routines
   
   =head1 EXPORTED SUBROUTINES
   
   =over
   
   =item escape()
   
   unpack non-word characters into CGI-compatible hex codes
   
   =item unescape()
   
    pack CGI-compatible hex codes into actual non-word ASCII character
   
   =item  add_get_param()
    
    Inputs:  url (with or without exit GET from parameters), hash ref of
                 form name => value pairs
   
    Return: url with properly added the form name elements and values to the 
            the url doing proper escaping of the values and joining with ? or &
            as needed
   
   =item clean_handle()
   
   =item propath()
   
   =item untie_domain_hash()
   
   =item tie_domain_hash()
   
   Manipulation of hash based databases (factoring out common code
   for later use as we refactor.
   
    Ties a domain level resource file to a hash.
    If requested a history entry is created in the associated hist file.
   
    Parameters:
       domain    - Name of the domain in which the resource file lives.
       namespace - Name of the hash within that domain.
       how       - How to tie the hash (e.g. GDBM_WRCREAT()).
       loghead   - Optional parameter, if present a log entry is created
                   in the associated history file and this is the first part
                    of that entry.
       logtail   - Goes along with loghead,  The actual logentry is of the
                   form $loghead:<timestamp>:logtail.
   Returns:
      Reference to a hash bound to the db file or alternatively undef
      if the tie failed.
   
   =item tie_user_hash()
   
     Ties a user's resource file to a hash.  
     If necessary, an appropriate history
     log file entry is made as well.
     This sub factors out common code from the subs that manipulate
     the various gdbm files that keep keyword value pairs.
   Parameters:
     domain       - Name of the domain the user is in.
     user         - Name of the 'current user'.
     namespace    - Namespace representing the file to tie.
     how          - What the tie is done to (e.g. GDBM_WRCREAT().
     loghead      - Optional first part of log entry if there may be a
                    history file.
     what         - Optional tail of log entry if there may be a history
                    file.
   Returns:
     hash to which the database is tied.  It's up to the caller to untie.
     undef if the has could not be tied.
   
   =item locking_hash_tie()
   
   routines if you just have a filename return tied hashref or undef
   
   =item locking_hash_untie()
   
   =item db_filename_parts()
   
   =head1 INTERNAL SUBROUTINES
   
   =item _do_hash_tie()
   
   =item _do_hash_untie()
   
   =back
   
   =cut
   

Removed from v.1.26  
changed lines
  Added in v.1.27


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