#!/usr/bin/env python

import os
import re
import sys

re_f90 = re.compile("\.[Ff]90$")
re_ign = re.compile(r"_(ext|noabirule)")
re_int = re.compile("interfaces_")

tests = dict()
tests["mod"] = re.compile(r"(module|program)",re.IGNORECASE)
tests["sub"] = re.compile(r"end (subroutine|function)",re.IGNORECASE)
tests["hdr"] = re.compile(r"!!\*\*\*\*")
tests["fun"] = re.compile("!! FUNCTION")

ign = list()
sbm = list()

cnt = dict()
acc = dict()
glo = dict()
dcc = dict()

glo["mod"] = 0
glo["sub"] = 0
glo["hdr"] = 0
glo["fun"] = 0
glo["dsc"] = 0
glo["mis"] = 0

source_tree = "src"
if ( len(sys.argv) > 1 ):
  source_tree = sys.argv[1]

print "Status of RoboDOC headers in %s" % (source_tree)
print ""
print ""
print ""

for root,dirs,files in os.walk(source_tree):
  acc["mod"] = 0
  acc["sub"] = 0
  acc["hdr"] = 0
  acc["fun"] = 0
  acc["dsc"] = 0
  acc["mis"] = 0

  dirs.sort()
  files.sort()
  if ( "01_interfaces_ext" in dirs ):
    ign.append(os.path.join(root,"01_interfaces_ext"))
    dirs.remove("01_interfaces_ext")
  for d in dirs:
    if ( re_ign.search(d) ):
      ign.append(os.path.join(root,d))
      dirs.remove(d)

  sources = list()
  if ( re_ign.search(root) ):
    ign.append(root)
  else:
    for src in files:
      if ( (re_f90.search(src)) and not (re_int.match(src)) ):
        sources.append(os.path.join(root,src))

  if ( len(sources) > 0 ):
    print "File                                             Mods Subs Hdrs Funs Dscs Miss"
    print "------------------------------------------------ ---- ---- ---- ---- ---- ----"

  for src in sources:
    cnt["mod"] = 0
    cnt["sub"] = 0
    cnt["hdr"] = 0
    cnt["fun"] = 0
    cnt["dsc"] = 0
    cnt["mis"] = 0

    chk_fun = False
    inp = file(src,"r").readlines()

    for line in inp:
      tmp = line.split()
      if ( chk_fun ):
        if ( len(tmp) > 5 ):
          cnt["dsc"] += 1
        chk_fun = False

      for blk in tests:
        if ( tests[blk].match(line.strip()) ):
          cnt[blk] += 1
          if ( blk == "fun" ):
            chk_fun = True

    cnt["mis"] = (cnt["mod"]+cnt["sub"]-cnt["fun"]) + (cnt["fun"]-cnt["dsc"])
    if ( cnt["mis"] < 0 ):
      cnt["mis"] = 0

    print "%-48s %4d %4d %4d %4d %4d %4d" % \
      (src,cnt["mod"],cnt["sub"],cnt["hdr"],cnt["fun"],cnt["dsc"],cnt["mis"])

    for blk in cnt:
      acc[blk] += cnt[blk]

    if ( (cnt["sub"] > 1) and (cnt["mod"] == 0) ):
      sbm.append(src)

  if ( len(sources) > 0 ):
    my_sum = acc["mod"] + acc["sub"]
    if ( my_sum > 0 ):
      dcc[root] = int(float(my_sum-acc["mis"])*100.0/float(my_sum))

    print "------------------------------------------------ ---- ---- ---- ---- ---- ----"
    print "Total in %-39s %4d %4d %4d %4d %4d %4d" % \
      (root,acc["mod"],acc["sub"],acc["hdr"],acc["fun"],acc["dsc"],acc["mis"])
    print ""
    print ""
    print ""

  for blk in cnt:
    glo[blk] += acc[blk]

print "================================================ ==== ==== ==== ==== ==== ===="
print "Summary                                          Mods Subs Hdrs Funs Dscs Miss"
print "------------------------------------------------ ---- ---- ---- ---- ---- ----"
print "%-48s %4d %4d %4d %4d %4d %4d" % \
  ("*",glo["mod"],glo["sub"],glo["hdr"],glo["fun"],glo["dsc"],glo["mis"])
print "================================================ ==== ==== ==== ==== ==== ===="
print ""
print "Mods: number of Fortran modules or programs"
print "Subs: number of subroutines or functions"
print "Hdrs: number of RoboDOC headers"
print "Funs: number of RoboDOC 'FUNCTION' keywords"
print "Dscs: number of actually described functions"
print "Miss: number of missing descriptions"
print ""
print ""
print ""

print "Directory                  % done"
print "------------------------ --------"
dcc_keys = dcc.keys()
dcc_keys.sort()
for key in dcc_keys:
  print "%-24s %8d" % (key,dcc[key])
my_sum = glo["mod"] + glo["sub"]
if ( my_sum > 0 ):
  pct = int(float(my_sum-glo["mis"])*100.0/float(my_sum))
  print "------------------------ --------"
  print "%-24s %8d" % ("*",pct)
print ""
print ""
print ""

print "The following directories have been ignored:"
print ""
for d in ign:
  print "  * %s/" % (d)
print ""
print ""
print ""

print "The following files are not modules, but contain a collection of routines:" 
print ""
for src in sbm:
  print "  * %s" % (src)
print ""
print ""
print ""