#!/usr/bin/env gbs3

Private $fCompileTime as Float

Private Sub RunScript(sScript As String, sRun As String, bGambasOnly As Boolean) As Float

	Dim aResult as String[]
  Dim sResult As String
  Dim fTime As Float
  
  If bGambasOnly Then
    Print "Running benchmark: '"; sRun; " "; sScript; "'"
  Else
    Print "<!-- Running benchmark: '"; sRun; " "; sScript; "' -->"
  Endif
  
  Shell "/usr/bin/time -v " & sRun & " " & sScript & " 2>&1 >/dev/null" To sResult
  If Not sResult Then Error.Raise("Script '" & sRun & " " & sScript & "' failed!")
  aResult = Split(sResult, "\n")
  For Each sResult In aResult
    sResult = Trim(sResult)
    If sResult Begins "User time" Or If sResult Begins "System time" Then
      fTime += CFloat(Mid$(sResult, InStr(sResult, ":") + 2))
    Endif
  Next
  
  $fCompileTime = 0
  Try $fCompileTime = CFloat(Trim(aResult[0]))
  
  Return fTime

End

Private Sub FormatResult(cResult As Collection, sLang As String) As String

  Dim bBetter As Boolean = True
  Dim sFormat As String
  Dim sTest As String

  For Each sTest In ["python", "perl", "gambas"]
    If cResult[sTest] < cResult[sLang] Then
      bBetter = False
      Break
    Endif
  Next

  sFormat = Format(cResult[sLang], "0.00")
  If bBetter Then sFormat = "<b>" & sFormat & "</b>"
  Return sFormat

End

Dim sBenchmark As String
Dim cResult As Collection
Dim aResult As New Collection[]
Dim sLang As String 
Dim sResult As String
Dim iPos As Integer
Dim bGambasOnly As Boolean
Dim sBenchmarkOnly As String
Dim I As Integer

For I = 1 To Args.Max

  If Args[I] = "-gambas" Then
    bGambasOnly = True
  Else
    sBenchmarkOnly = Args[I]
  Endif

Next

For Each sBenchmark In Dir(Application.Dir, "*.gbs")

  sBenchmark = File.BaseName(sBenchmark)
  If sBenchmark = "benchmark" Then Continue
  If sBenchmarkOnly And If sBenchmark <> sBenchmarkOnly Then Continue

  cResult = New Collection
  aResult.Add(cResult)
  
  cResult!name = sBenchmark
  cResult!gambasjit = RunScript(sBenchmark & ".gbs", "gbs3 -f -U -c", bGambasOnly)
  cResult!gambasjitwct = cResult!gambasjit - $fCompileTime
  cResult!gambas = RunScript(sBenchmark & ".gbs", "gbs3 -c", bGambasOnly)
  If Not bGambasOnly Then cResult!python = RunScript(sBenchmark & ".py", "python", bGambasOnly)
  If Not bGambasOnly Then cResult!perl = RunScript(sBenchmark & ".pl", "perl", bGambasOnly)

Next

' Print "<div style=\"border:solid 1px gray;padding:8px;display:inline-table;background:\">"
' 
' Exec ["uname", "-srv"] To sResult
' Print "<b>Kernel:</b> ";Html(sResult);"<br>"
'
' Exec ["cat", "/proc/cpuinfo"] To sResult
' For Each sResult In Split(sResult, "\n")
'   If sResult Begins "model name" Then
'     iPos = Instr(sResult, ":")
'     If iPos Then
'       Print "<b>CPU:</b> ";Html(Mid$(sResult, iPos+1));"<br>"
'     Endif
'     Break
'   Endif
' Next
' 
' Print "</div>"

If bGambasOnly Then

  For Each cResult In aResult
    Print cResult!name; Space$(20 - Len(cResult!name)); ": "; Format(cResult!gambas, "0.00"); " / ";Format(cResult!gambasjit, "0.00");" (jit)"; " / ";Format(cResult!gambasjitwct, "0.00");" (jit without compilation time)"
  Next

Else

  Print "<table class=\"table\">"
  Print "<tr>\n<th>Benchmark</th>"
  For Each sLang In ["Python", "Perl", "Gambas", "Gambas JIT", "Gambas JIT without compilation time"]
    Print "<th style=\"width:12em;\">"; Html(sLang); "</th>"
  Next
  Print "</tr>"
  For Each cResult In aResult
    Print "<tr>"
    Print "<td><tt>"; cResult!name; "</tt></td>"
    Print "<td align=\"right\">"; FormatResult(cResult, "python"); "&nbsp;</td>"
    Print "<td align=\"right\">"; FormatResult(cResult, "perl"); "&nbsp;</td>"
    Print "<td align=\"right\">"; FormatResult(cResult, "gambas"); "&nbsp;</td>"
    Print "<td align=\"right\">"; Format(cResult!gambasjit, "0.00"); "&nbsp;</td>"
    Print "<td align=\"right\">"; Format(cResult!gambasjitwct, "0.00"); "&nbsp;</td>"
    Print "</tr>"
  Next
  Print "</table>"
  
Endif