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###############################################################################
#
# vendor.eagle --
#
# Extensible Adaptable Generalized Logic Engine (Eagle)
# Vendor Initialization File
#
# Copyright (c) 2007-2012 by Joe Mistachkin.  All rights reserved.
#
# See the file "license.terms" for information on usage and redistribution of
# this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: $
#
###############################################################################

#
# STUB: This script file is a placeholder.  This file, when present, is always
#       evaluated when an interpreter is initialized.  Vendors distributing
#       Eagle can place custom application-specific, interpreter-specific
#       initialization and/or customizations in here.  Additionally, this file
#       may contain per-interpreter customizations required when porting to
#       new platforms, operating systems, etc.
#

###############################################################################
############################## BEGIN VENDOR CODE ##############################
###############################################################################
#
# NOTE: Use our own namespace here because even though we do not directly
#       support namespaces ourselves, we do not want to pollute the global
#       namespace if this script actually ends up being evaluated in Tcl.
#
namespace eval ::Eagle {
  if {[isEagle]} then {
    proc checkForTestOverrides { channel varNames quiet } {
      set result 0

      foreach varName $varNames {
        if {[uplevel 1 [list info exists $varName]]} then {
          incr result

          if {!$quiet} then {
            tqputs $channel [appendArgs \
                "---- found vendor-specific test override \"" $varName "\".\n"]
          }
        }
      }

      return $result
    }

    proc addTestSuiteToAutoPath { channel varName quiet } {
      #
      # NOTE: Start with the directory containing this file.
      #
      set dir [file normalize [file dirname [info script]]]

      #
      # NOTE: Keep going until the directory name is empty OR is actually the
      #       root of the associated volume.
      #
      while {[string length $dir] > 0 && \
          [lsearch -exact -nocase -- [file volumes] $dir] == -1} {
        #
        # NOTE: Does this directory have the necessary sub-directory that
        #       contains a package index file?
        #
        if {[file exists [file join $dir Tests]] && \
            [file isdirectory [file join $dir Tests]] && \
            [file exists [file join $dir Tests pkgIndex.eagle]] && \
            [file isfile [file join $dir Tests pkgIndex.eagle]]} then {
          #
          # NOTE: If requested, give the caller access to the name of the
          #       directory we just found.
          #
          if {[string length $varName] > 0} then {
            upvar 1 $varName dir2
          }

          #
          # NOTE: Ok, show the directory we found.
          #
          set dir2 [file join $dir Tests]

          #
          # NOTE: We found the necessary directory to add to the auto-path;
          #       However, we cannot simply add it to the auto-path directly
          #       because the auto-path is dynamically constructed after this
          #       script is evaluated; therefore, set the Eagle library path
          #       environment variable and force the appropriate internal path
          #       list to be refreshed.
          #
          if {![info exists ::env(EAGLELIBPATH)] || \
              [lsearch -exact $::env(EAGLELIBPATH) $dir2] == -1} then {
            #
            # NOTE: If we have NOT been instructed to be quiet, report now.
            #
            if {!$quiet} then {
              tqputs $channel [appendArgs \
                  "---- found vendor-specific test package directory \"" \
                  $dir2 "\", adding...\n"]
            }

            #
            # NOTE: Append the directory to the necessary environment variable
            #       so that it will get picked up when Eagle actually rebuilds
            #       the auto-path list (below).
            #
            lappend ::env(EAGLELIBPATH) $dir2

            #
            # NOTE: Force Eagle to rebuild the auto-path list for the current
            #       interpreter right now.
            #
            object invoke Utility RefreshAutoPathList true
          }

          #
          # NOTE: We are done, return success.
          #
          return true
        }

        #
        # NOTE: Keep going up the directory tree...
        #
        set dir [file dirname $dir]
      }

      #
      # NOTE: If we have NOT been instructed to be quiet, report now.
      #
      if {!$quiet} then {
        tqputs $channel \
            "---- could not find vendor-specific test package directory.\n"
      }

      #
      # NOTE: Directory not found, return failure.
      #
      return false
    }

    proc setupInterpreterTestPath { channel dir quiet } {
      set testPath [object invoke -flags +NonPublic Interpreter.GetActive \
          TestPath]

      if {$dir ne $testPath} then {
        object invoke -flags +NonPublic Interpreter.GetActive TestPath $dir

        if {!$quiet} then {
          tqputs $channel [appendArgs \
              "---- set interpreter test path to \"" $dir \".\n]
        }
      }
    }

    checkForTestOverrides stdout \
        [list binary_directory build_base_directory build_directory \
              common_directory connection_flags database_directory \
              datetime_format test_configuration test_year] false

    #
    # NOTE: This variable will contain the name of the directory containing the
    #       vendor-specific testing infrastructure.
    #
    set ::vendor_directory ""

    #
    # NOTE: This procedure will attempt to find the vendor-specific testing
    #       infrastructure directory and add it to the auto-path for the
    #       current interpreter.
    #
    addTestSuiteToAutoPath stdout ::vendor_directory false

    #
    # NOTE: If we actually found a vendor-specific testing infrastructure
    #       directory then modify the TestPath property of the current
    #       interpreter to point directly to it.
    #
    if {[string length $::vendor_directory] > 0} then {
      setupInterpreterTestPath stdout $::vendor_directory false
    }
  }
}

###############################################################################
############################### END VENDOR CODE ###############################
###############################################################################