/*:VRX         NLVSetup
 */
NLVSetup: PROCEDURE EXPOSE settings. options.
    /* This subroutine is (c) by Alex Taylor, portions (c) Herwig Bauernfeind
     * Sets all UI text from the message file.  Any string that can't be loaded
     * will default to the built-in English.
     */

    IF options.!debug == 1 THEN SAY time()' NLVSetup() started'
    IF options.!debug == 1 THEN SAY '  NLVSetup() is (c) Alex Taylor, portions (c) Herwig Bauernfeind'

    execPath = VRGet("Application", "Program")
    if execPath = "" then parse source . . execPath
    execDir  = translate(VRParseFileName( execPath, "DP"))
    parse var execDir srchroot '\BIN'

    say '  NLV execDir    = "'execDir'"'
    say '  NLV srchroot   = "'srchRoot'"'

    filestem = VRParseFileName( execPath, "N")
    if translate(filestem) = "EVFSGUI" then filestem = "evfsi_"
    else filestem = SUBSTR( filestem, 1, 6, '_' )
    say '  NLV filestem   = "'filestem'"'

    /* First, figure out what language/message file to use */
    Syslang = TRANSLATE( VALUE('LANG',,'OS2ENVIRONMENT'))
    SELECT
        WHEN Syslang == 'ZH_TW' THEN nlv = 'TW'
        WHEN Syslang == 'ZH_CN' THEN nlv = 'CX'
        OTHERWISE PARSE VAR Syslang nlv '_' .
    END

    /* Find the messagefile and helpfile */
    settings.!messages = NLVsearch(nlv,'LANG','MSG','DPATH')
    settings.!helpfile = NLVsearch(nlv,'HELP','HLP','HELP')

    IF options.!debug == 1 THEN SAY '  NLV MessageFile = "'settings.!messages'"'
    IF options.!debug == 1 THEN SAY '  NLV HelpFile    = "'settings.!helpfile'"'

    IF options.!debug == 1 THEN SAY time()' NLVSetup() done'
RETURN

/*:VRX         NLVSearch
*/
NLVSearch: procedure expose filestem execdir srchroot
    nlv     = arg(1)
    SubDir  = arg(2)
    Suffix  = arg(3)
    PathVar = arg(4)
    say time()" NLVSearch() started"
    NLVSrchDone = 0
    NLVFile = ""
    do until NLVSrchDone = 1
        say '  NLV 'Suffix' file   = "'filestem||nlv'.'Suffix'"'
        select
            when VRFileExists(srchRoot'\'SubDir'\'filestem||nlv'.'Suffix) then do
                say "  NLV "Suffix" file found directly!"
                NLVFile = strip(srchRoot'\'SubDir'\'filestem||nlv'.'Suffix,'L','\')
                NLVSrchDone = 1
            end
            when SysSearchPath(PathVar, filestem||nlv'.'Suffix) \= '' then do
                execDir = VRParseFileName(SysSearchPath(PathVar, filestem||nlv'.'Suffix),"DP")
                say "  NLV "Suffix" file found via "PathVar
                NLVFile = strip(execdir'\'filestem||nlv'.'Suffix,'L','\')
                NLVSrchDone = 1
            end
            otherwise do
                say "  Searching subdirectories"
                ok = SysFileTree(srchRoot'\'filestem||nlv'.'Suffix,nlvmsg.,'FOS')
                if nlvmsg.0 = 1 then do
                    say "  Found  NLV "Suffix" file in subdirectory"
                    NLVFile = VRParseFilename(nlvmsg.1,"DPN")'.'Suffix
                    say "  Adding NLV "Suffix" path to "PathVar
                    OldPathVar = value(PathVar,,"OS2ENVIRONMENT")
                    ok = value(PathVar,VRParseFilename(nlvmsg.1,"DP")';'OldPathVar,"OS2ENVIRONMENT")
                    NLVSrchDone = 1
                end
                else say "  NLV "Suffix" file not found in subdirectories!"
            end
        end
        if NLVSrchDone = 0 then do /* Fallback to English */
            if nlv = "EN" then do
                NLVSrchDone = 1 /* We give up and leave */
                id = VRMessage( "", "Could not find a valid language file!", "NLV Setup Error", "E", )
                /* We will leave without a valid NLV file here! */
            end
            else do
                say "  NLV "Suffix" File not found, falling back to EN."
                nlv = "EN"
                /* Now we repeat the whole procedure to find the EN file */
            end
        end
    end
    say time()' NLVSearch() done, returning "'NLVFile'"'
return NLVFile

/*:VRX         NLVGetMessage
*/
NLVGetMessage: PROCEDURE EXPOSE settings. options. fs.

    msgfile = settings.!messages
    msgnum  = ARG( 1 )

    IF msgfile == '' THEN RETURN ''
    IF msgnum == '' THEN RETURN ''

    SELECT
        WHEN ARG() == 2 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2) )
        WHEN ARG() == 3 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(3) )
        WHEN ARG() == 4 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(3), ARG(4) )
        WHEN ARG() == 5 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(3), ARG(4), ARG(5) )
        WHEN ARG() == 6 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(3), ARG(4), ARG(5), ARG(6) )
        WHEN ARG() == 7 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(3), ARG(4), ARG(5), ARG(6), ARG(7) )
        WHEN ARG() == 8 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(2), ARG(4), ARG(5), ARG(6), ARG(7), ARG(8) )
        WHEN ARG() == 9 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(2), ARG(4), ARG(5), ARG(6), ARG(7), ARG(8), ARG(9) )
        WHEN ARG() == 10 THEN
            msgtxt = SysGetMessage( msgnum, msgfile, ARG(2), ARG(2), ARG(4), ARG(5), ARG(6), ARG(7), ARG(8), ARG(9), ARG(10) )
        OTHERWISE
            msgtxt = SysGetMessage( msgnum, msgfile )
    END

    PARSE VAR msgtxt message '0D'x .

    IF translate(SUBSTR( message, 1, 4 )) == 'SYS0' THEN message = '[Missing message 'msgnum'!]'

RETURN message

/*:VRX         NLVSetText
*/
/*
 * Sets the specified property of the specified control to the specified
 * message text.
 */
NLVSetText: PROCEDURE EXPOSE settings. options. fs.
    PARSE ARG control, property, message, substitution

    success = 1
    IF substitution == '' THEN
        text = NLVGetMessage( message )
    ELSE
        text = NLVGetMessage( message, substitution )

    IF text == '' THEN success = 0
    ELSE               CALL VRSet control, property, text

RETURN success