OIK_libs::determine_lib() – Determine a library file

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Description

Determine a library file

Find the $lib that satisfies this request for a library / version combination

Usage

$mixed = OIK_libs::determine_lib( $library, $version );

Parameters

$library

( string ) required – library name

$version

( string ) required – version required

Returns

mixed lib object or WP_Error

Source

File name: oik-lib/includes/class-oik-libs.php
Lines:

  function determine_lib( $library, $version ) {
    bw_trace2( null, null, true, BW_TRACE_VERBOSE );
  
    $selected = $this->is_loaded( $library, $version );
    if ( !$selected ) {
      bw_trace2( $this->libraries, "this libraries", false, BW_TRACE_VERBOSE );
      if ( $this->libraries && count( $this->libraries ) ) {
        foreach ( $this->libraries as $key => $lib ) {
          if ( $lib->library == $library ) {
            $compatible = $this->compatible_version( $lib->version, $version );
            $selected = $this->is_already_loaded( $lib );
            if ( !$selected ) {
              if ( $compatible ) {
                $selected = $this->load_dependencies( $lib ); 
                $selected = $lib;
              } else {
                /* Not already loaded but this version's not compatible so move on */
              }
            } else {
              if ( $compatible ) {
                /* Good */
              } else {
                $selected = $this->error( "incompatible", "Incompatible library already loaded", $lib );
              }
              
            }
            if ( $selected ) {
              break;
            }
          }  
        }
      }
    } else {
      $compatible = $this->compatible_version( $selected->version, $version );
      if ( !$compatible ) {
        $selected = $this->error( "incompatible", "Incompatible library already loaded", $selected );
      }
    }
    bw_trace2( $selected, "selected", true, BW_TRACE_VERBOSE );
    if ( !$selected ) {
    
      if ( $spos = strpos( $library, "/" ) ) {
        $library = substr( $library, $spos+1 ); 
      }
      $library_file = oik_require_lib_fallback( $library );
      if ( $library_file ) {
        $loaded_version = $this->loaded_version( $library );
        $selected = $this->register_lib( $library, $library_file, null, $loaded_version );
        $this->loaded( $selected );
      }
    }
    return( $selected );
  }
 

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