#! /usr/bin/env python
# -*- coding: utf-8 -*-
#
# SPDX-FileCopyrightText: 1992-2013 The University of Tennessee and The University of Tennessee Research Foundation
# SPDX-FileCopyrightText: 2000-2013 The University of California Berkeley
# SPDX-FileCopyrightText: 2006-2013 The University of Colorado Denver
# SPDX-FileCopyrightText: The Eigen Authors
# SPDX-License-Identifier: BSD-3-Clause-Open-MPI
#

###############################################################################
# lapack_testing.py  
###############################################################################


from __future__ import print_function
from subprocess import Popen, STDOUT, PIPE 
import os, sys, math
import getopt
# Arguments
try:
   opts, args = getopt.getopt(sys.argv[1:], "hd:srep:t:n", 
                              ["help", "dir", "short", "run", "error","prec=","test=","number"])
   
except getopt.error as msg:
   print(msg)
   print("for help use --help")
   sys.exit(2)

short_summary=0
with_file=1
just_errors = 0
prec='x'
test='all'
only_numbers=0
dir="TESTING"
for o, a in opts:
   if o in ("-h", "--help"):
      print(sys.argv[0]+" [-h|--help] [-d dir |--dir dir] [-s |--short] [-r |--run] [-e |--error] [-p p |--prec p] [-t test |--test test] [-n | --number]")
      print("     - h is to print this message")
      print("     - r is to use to run the LAPACK tests then analyse the output (.out files). By default, the script will not run all the LAPACK tests")
      print("     - d [dir] is to indicate where is the LAPACK testing directory (.out files). By default, the script will use .")
      print(" LEVEL OF OUTPUT")
      print("     - x is to print a detailed summary")
      print("     - e is to print only the error summary")
      print("     - s is to print a short summary")
      print("     - n is to print the numbers of failing tests (turn on summary mode)")
      print(" SECLECTION OF TESTS:")
      print("     - p [s/c/d/z/x] is to indicate the PRECISION to run:")
      print("            s=single")
      print("            d=double")
      print("            sd=single/double")
      print("            c=complex")
      print("            z=double complex")
      print("            cz=complex/double complex")
      print("            x=all [DEFAULT]")
      print("     - t [lin/eig/mixed/rfp/all] is to indicate which TEST FAMILY to run:")
      print("            lin=Linear Equation")
      print("            eig=Eigen Problems")
      print("            mixed=mixed-precision")
      print("            rfp=rfp format")
      print("            all=all tests [DEFAULT]")
      print(" EXAMPLES:")
      print("     ./lapack_testing.py -n")
      print("            Will return the numbers of failed tests by analyzing the LAPACK output")
      print("     ./lapack_testing.py -n -r -p s")
      print("            Will return the numbers of failed tests in REAL precision by running the LAPACK Tests then analyzing the output")
      print("     ./lapack_testing.py -n -p s -t eig ")
      print("            Will return the numbers of failed tests in REAL precision by analyzing only the LAPACK output of EIGEN testings")
      print("Written by Julie Langou (June 2011) ")
      sys.exit(0)
   else:
      if o in ("-s", "--short"):
         short_summary = 1
      if o in ("-r", "--run"):
         with_file = 0
      if o in ("-e", "--error"):
         just_errors = 1
      if o in ( '-p', '--prec' ):
         prec = a
      if o in ( '-d', '--dir' ):
         dir = a
      if o in ( '-t', '--test' ):
         test = a
      if o in ( '-n', '--number' ):
         only_numbers = 1
         short_summary = 1

# process options
os.chdir(dir)
execution=1
summary="\n\t\t\t-->   LAPACK TESTING SUMMARY  <--\n";
if with_file: summary+= "\t\tProcessing LAPACK Testing output found in the "+dir+" directory\n";
summary+="SUMMARY             \tnb test run \tnumerical error   \tother error  \n";
summary+="================   \t===========\t=================\t================  \n";
nb_of_test=0

# Add current directory to the path for subshells of this shell
# Allows the popen to find local files in both windows and unixes
os.environ["PATH"] = os.environ["PATH"]+":."

# Define a function to open the executable (different filenames on unix and Windows)
def run_summary_test( f, cmdline, short_summary):
   nb_test_run=0
   nb_test_fail=0
   nb_test_illegal=0
   nb_test_info=0
   if (with_file):
      if not os.path.exists(cmdline):
        error_message=cmdline+" file not found"
        r=1
        if short_summary: return [nb_test_run,nb_test_fail,nb_test_illegal,nb_test_info]
      else:
        pipe = open(cmdline,'r')
        r=0
   else:
      if os.name != 'nt':
         cmdline="./" + cmdline

      outfile=cmdline.split()[4]
      pipe = open(outfile,'w')
      p = Popen(cmdline, shell=True, stdout=pipe)
      p.wait()
      pipe.close()
      r=p.returncode
      pipe = open(outfile,'r')
      error_message=cmdline+" did not work"

   if r != 0 and not with_file:
       print("---- TESTING " + cmdline.split()[0] + "... FAILED(" + error_message +") !")
       for line in pipe.readlines():
          f.write(str(line))
   elif r != 0 and with_file and not short_summary:
       print("---- WARNING: please check that you have the LAPACK output : "+cmdline+"!")
       print("---- WARNING: with the option -r, we can run the LAPACK testing for you")
      # print("---- "+error_message)
   else:
         for line in pipe.readlines():
                f.write(str(line))
                words_in_line=line.split()
                if (line.find("run")!=-1):
#                  print(line)
                   whereisrun=words_in_line.index("run)")
                   nb_test_run+=int(words_in_line[whereisrun-2])
                if (line.find("out of")!=-1):
                   if (short_summary==0): print(line, end="")
                   whereisout= words_in_line.index("out")
                   nb_test_fail+=int(words_in_line[whereisout-1])
                if (line.find("illegal")!=-1):
                   if (short_summary==0):print(line, end="")
                   nb_test_illegal+=1
                if (line.find(" INFO")!=-1):
                   if (short_summary==0):print(line, end="")
                   nb_test_info+=1
                if (with_file==1):
                   pipe.close()
           
   f.flush();

   return [nb_test_run,nb_test_fail,nb_test_illegal,nb_test_info]


# If filename cannot be opened, send output to sys.stderr
filename = "testing_results.txt"
try:
     f = open(filename, 'w')
except IOError:
     f = sys.stdout

if (short_summary==0):
   print(" ")
   print("---------------- Testing LAPACK Routines ----------------")
   print(" ")
   print("-- Detailed results are stored in", filename)

dtypes = (
("s", "d", "c", "z"),
("REAL             ", "DOUBLE PRECISION", "COMPLEX          ", "COMPLEX16         "),
)

if prec=='s':
   range_prec=[0]
elif prec=='d':
   range_prec=[1]
elif prec=='sd':
   range_prec=[0,1]
elif prec=='c':
   range_prec=[2]
elif prec=='z':
   range_prec=[3]
elif prec=='cz':
   range_prec=[2,3]
else: 
   prec='x';
   range_prec=range(4)

if test=='lin':
   range_test=[15]
elif test=='mixed':
   range_test=[16]
   range_prec=[1,3]
elif test=='rfp':
   range_test=[17]
elif test=='eig':
   range_test=range(15)
else:  
   range_test=range(18)

list_results = [
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
]

for dtype in range_prec:
  letter = dtypes[0][dtype]
  name = dtypes[1][dtype]

  if (short_summary==0):
     print(" ")
     print("------------------------- %s ------------------------" % name)
     print(" ")
     sys.stdout.flush()


  dtests = (
  ("nep", "sep", "svd",
  letter+"ec",letter+"ed",letter+"gg",
  letter+"gd",letter+"sb",letter+"sg",
  letter+"bb","glm","gqr",
  "gsv","csd","lse",
  letter+"test", letter+dtypes[0][dtype-1]+"test",letter+"test_rfp"),
  ("Nonsymmetric Eigenvalue Problem", "Symmetric Eigenvalue Problem", "Singular Value Decomposition",
  "Eigen Condition","Nonsymmetric Eigenvalue","Nonsymmetric Generalized Eigenvalue Problem",
  "Nonsymmetric Generalized Eigenvalue Problem driver", "Symmetric Eigenvalue Problem", "Symmetric Eigenvalue Generalized Problem",
  "Banded Singular Value Decomposition routines", "Generalized Linear Regression Model routines", "Generalized QR and RQ factorization routines",
  "Generalized Singular Value Decomposition routines", "CS Decomposition routines", "Constrained Linear Least Squares routines",
  "Linear Equation routines", "Mixed Precision linear equation routines","RFP linear equation routines"),
  (letter+"nep", letter+"sep", letter+"svd",
  letter+"ec",letter+"ed",letter+"gg",
  letter+"gd",letter+"sb",letter+"sg",
  letter+"bb",letter+"glm",letter+"gqr",
  letter+"gsv",letter+"csd",letter+"lse",
  letter+"test", letter+dtypes[0][dtype-1]+"test",letter+"test_rfp"),
  )


  for dtest in range_test:
     nb_of_test=0
     # NEED TO SKIP SOME PRECISION (namely s and c) FOR PROTO MIXED PRECISION TESTING
     if dtest==16 and (letter=="s" or letter=="c"):
        continue
     if (with_file==1):
        cmdbase=dtests[2][dtest]+".out"
     else:
        if dtest==15:
           # LIN TESTS
           cmdbase="xlintst"+letter+" < "+dtests[0][dtest]+".in > "+dtests[2][dtest]+".out"
        elif dtest==16:
           # PROTO LIN TESTS
           cmdbase="xlintst"+letter+dtypes[0][dtype-1]+" < "+dtests[0][dtest]+".in > "+dtests[2][dtest]+".out"
        elif dtest==17:
           # PROTO LIN TESTS
           cmdbase="xlintstrf"+letter+" < "+dtests[0][dtest]+".in > "+dtests[2][dtest]+".out"
        else:
           # EIG TESTS
           cmdbase="xeigtst"+letter+" < "+dtests[0][dtest]+".in > "+dtests[2][dtest]+".out"
     if (not just_errors and not short_summary):
        print("-->  Testing "+name+" "+dtests[1][dtest]+" [ "+cmdbase+" ]")
     # Run the process: either to read the file or run the LAPACK testing   
     nb_test = run_summary_test(f, cmdbase, short_summary)
     list_results[0][dtype]+=nb_test[0]
     list_results[1][dtype]+=nb_test[1]
     list_results[2][dtype]+=nb_test[2]
     list_results[3][dtype]+=nb_test[3]
     got_error=nb_test[1]+nb_test[2]+nb_test[3]
     
     if (not short_summary):
        if (nb_test[0]>0 and just_errors==0):
           print("-->  Tests passed: "+str(nb_test[0]))
        if (nb_test[1]>0):
           print("-->  Tests failing to pass the threshold: "+str(nb_test[1]))
        if (nb_test[2]>0):
           print("-->  Illegal Error: "+str(nb_test[2]))
        if (nb_test[3]>0):
           print("-->  Info Error: "+str(nb_test[3]))
        if (got_error>0 and just_errors==1):
           print("ERROR IS LOCATED IN "+name+" "+dtests[1][dtest]+" [ "+cmdbase+" ]")
           print("")
        if (just_errors==0):
           print("")
#     elif (got_error>0):
#        print(dtests[2][dtest]+".out \t"+str(nb_test[1])+"\t"+str(nb_test[2])+"\t"+str(nb_test[3]))
        
     sys.stdout.flush()
  if (list_results[0][dtype] > 0 ):
     percent_num_error=float(list_results[1][dtype])/float(list_results[0][dtype])*100
     percent_error=float(list_results[2][dtype]+list_results[3][dtype])/float(list_results[0][dtype])*100
  else:
     percent_num_error=0
     percent_error=0
  summary+=name+"\t"+str(list_results[0][dtype])+"\t\t"+str(list_results[1][dtype])+"\t("+"%.3f" % percent_num_error+"%)\t"+str(list_results[2][dtype]+list_results[3][dtype])+"\t("+"%.3f" % percent_error+"%)\t""\n"
  list_results[0][4]+=list_results[0][dtype]
  list_results[1][4]+=list_results[1][dtype]
  list_results[2][4]+=list_results[2][dtype]
  list_results[3][4]+=list_results[3][dtype]
  
if only_numbers==1:
   print(str(list_results[1][4])+"\n"+str(list_results[2][4]+list_results[3][4]))
else:
   print(summary)
   if (list_results[0][4] > 0 ):
      percent_num_error=float(list_results[1][4])/float(list_results[0][4])*100
      percent_error=float(list_results[2][4]+list_results[3][4])/float(list_results[0][4])*100
   else:
      percent_num_error=0
      percent_error=0
   if (prec=='x'):
        print("--> ALL PRECISIONS\t"+str(list_results[0][4])+"\t\t"+str(list_results[1][4])+"\t("+"%.3f" % percent_num_error+"%)\t"+str(list_results[2][4]+list_results[3][4])+"\t("+"%.3f" % percent_error+"%)\t""\n")
   if list_results[0][4] == 0:
     print("NO TESTS WERE ANALYZED, please use the -r option to run the LAPACK TESTING")

# This may close the sys.stdout stream, so make it the last statement
f.close()