misc/scripts/check_unused_headers

   1 #!/bin/bash
   2 #
   3 # Name:      check_unused_headers
   4 # Purpose:   checks all wxWidgets headers looking for headers not referenced anywhere
   5 # Usage:     run with --verbose for verbose output
   6 # Copyright: (c) 2007 Francesco Montorsi
   7 # Licence:   wxWindows licence
   8 ################################################################################
   9
  10
  11
  12 if [[ "$1" = "-v" || "$1" = "--verbose" ]]; then
  13     verbose=yes
  14 else
  15     verbose=no
  16 fi
  17
  18
  19 me=$(basename $0)
  20 path=${0%%/$me}        # path from which the script has been launched
  21 current=$(pwd)
  22
  23 # the path where this script resides:
  24 scriptPath=$current/$path
  25
  26 # other interesting wx paths
  27 headerPath="$scriptPath/../../include"
  28 srcPath="$scriptPath/../../src"
  29
  30 # get list of wx source and header filenames
  31 # NOTE: these list won't contain the .svn backup copies of the real sources/headers
  32 # NOTE2: we keep the size of these lists small avoiding to include the prefixes
  33 #        like e.g. ../../include so to not incurr in OS limits when passing
  34 #        them as arguments of commands
  35 cd $headerPath
  36 headerList=`find wx -name "*.h"`
  37 cd $srcPath
  38 srcList=`find . -name "*.cpp"`
  39
  40
  41 unusedHeaders=0
  42
  43 function checkIfHeaderIsUsed
  44 {
  45     local headerToCheck="$1"
  46     local found=no
  47
  48     if [[ $verbose = yes ]]; then
  49         echo -n "checking if header: $headerToCheck is used... "
  50     fi
  51
  52     # find the first occurrence of this header in wx sources and headers:
  53     cd $headerPath
  54     grep -m 1 "$headerToCheck" $headerList >/dev/null 2>&1
  55     if [[ $? = 0 ]]; then found=yes; fi
  56
  57     cd $srcPath
  58     grep -m 1 "$headerToCheck" $srcList >/dev/null 2>&1
  59     if [[ $? = 0 ]]; then found=yes; fi
  60
  61     if [[ $found = no ]]; then
  62
  63         if [[ $verbose = yes ]]; then
  64             echo "no, it's not!"
  65         fi
  66
  67         # this header is not used anywhere...
  68         echo "WARNING: unused header $headerToCheck"
  69         ((( unusedHeaders++ )))
  70     else
  71         if [[ $verbose = yes ]]; then
  72             echo "yes, it is"
  73         fi
  74     fi
  75 }
  76
  77 echo " This script will look for unused wxWidgets headers"
  78 echo " Note that some headers maybe not referenced by wxWidgets sources/headers but still"
  79 echo " be useful for user applications; others instead are simply old and forgotten."
  80 echo
  81
  82 for header in $headerList; do
  83     checkIfHeaderIsUsed $header
  84 done
  85
  86 if [[ $unusedHeaders -gt 0 ]]; then
  87     echo " => WARNING: found $unusedHeaders unused headers!"
  88 else
  89     echo " => All headers are referenced in either wxWidgets sources or in other headers"
  90 fi