workbench/libs/png/contrib/tools/chkfmt

   1 #!/bin/sh
   2
   3 # chkfmt
   4 #
   5 # COPYRIGHT: Written by John Cunningham Bowler, 2010.
   6 # To the extent possible under law, the author has waived all copyright and
   7 # related or neighboring rights to this work.  This work is published from:
   8 # United States.
   9 #
  10 # Check the format of the source files in the current directory - checks for a
  11 # line length of 80 characters max and no tab characters.
  12 #
  13 # Optionally arguments are files or directories to check.
  14 #
  15 # -v: output the long lines (makes fixing them easier)
  16 # -e: spawn an editor for each file that needs a change ($EDITOR must be
  17 #     defined).  When using -e the script MUST be run from an interactive
  18 #     command line.
  19 verbose=
  20 edit=
  21 vers=
  22 test "$1" = "-v" && {
  23    shift
  24    verbose=yes
  25 }
  26 test "$1" = "-e" && {
  27    shift
  28    if test -n "$EDITOR"
  29    then
  30       edit=yes
  31
  32       # Copy the standard streams for the editor
  33       exec 3>&0 4>&1 5>&2
  34    else
  35       echo "chkfmt -e: EDITOR must be defined" >&2
  36       exit 1
  37    fi
  38 }
  39
  40 # Function to edit a single file - if the file isn't changed ask the user
  41 # whether or not to continue.  This stuff only works if the script is run from
  42 # the command line (otherwise, don't specify -e or you will be sorry).
  43 doed(){
  44    cp "$file" "$file".orig
  45    "$EDITOR" "$file" 0>&3 1>&4 2>&5 3>&- 4>&- 5>&- || exit 1
  46    if cmp -s "$file".orig "$file"
  47    then
  48       rm "$file".orig
  49       echo -n "$file: file not changed, type anything to continue: " >&5
  50       read ans 0>&3
  51       test -n "$ans" || return 1
  52    fi
  53    return 0
  54 }
  55
  56 # In beta versions the version string which appears in files can be a little
  57 # long and cause spuriously overlong lines.  To avoid this substitute the version
  58 # string with a 'standard' version a.b.cc before checking for long lines.
  59 if test -r png.h
  60 then
  61    vers="`sed -n -e \
  62    's/^#define PNG_LIBPNG_VER_STRING .\([0-9]\.[0-9]\.[0-9][0-9a-z]*\).$/\1/p' \
  63    png.h`"
  64    echo "chkfmt: checking version $vers"
  65 fi
  66 if test -z "$vers"
  67 then
  68    echo "chkfmt: png.h not found, ignoring version number" >&2
  69 fi
  70
  71 test -n "$1" || set -- .
  72 find "$@" \( -type d \( -name '.git' -o -name '.libs' -o -name 'projects' \) \
  73    -prune \) -o \( -type f \
  74    ! -name '*.[oa]' ! -name '*.l[oa]' !  -name '*.png' ! -name '*.out' \
  75    ! -name '*.jpg' ! -name '*.patch' ! -name '*.obj' ! -name '*.exe' \
  76    ! -name '*.com' ! -name '*.tar.*' ! -name '*.zip' ! -name '*.ico' \
  77    ! -name '*.res' ! -name '*.rc' ! -name '*.mms' ! -name '*.rej' \
  78    ! -name '*.dsp' ! -name '*.orig' ! -name '*.dfn' ! -name '*.swp' \
  79    ! -name '~*' ! -name '*.3' \
  80    ! -name 'missing' ! -name 'mkinstalldirs' ! -name 'depcomp' \
  81    ! -name 'aclocal.m4' ! -name 'install-sh' ! -name 'Makefile.in' \
  82    ! -name 'ltmain.sh' ! -name 'config*' -print \) | {
  83    st=0
  84    while read file
  85    do
  86       case "$file" in
  87       *.mak|*[Mm]akefile.*|*[Mm]akefile)
  88          # Makefiles require tabs, dependency lines can be this long.
  89          check_tabs=
  90          line_length=100;;
  91       *.awk)
  92          # Includes literal tabs
  93          check_tabs=
  94          # The following is arbitrary
  95          line_length=132;;
  96       *contrib/*/*.[ch])
  97          check_tabs=yes
  98          line_length=96;;
  99       *)
 100          check_tabs=yes
 101          line_length=80;;
 102       esac
 103
 104       # Note that vers can only contain 0-9, . and a-z
 105       if test -n "$vers"
 106       then
 107          sed -e "s/$vers/a.b.cc/g" "$file" >"$file".$$
 108       else
 109          cp "$file" "$file".$$
 110       fi
 111       splt="`fold -$line_length "$file".$$ | diff -c "$file".$$ -`"
 112       rm "$file".$$
 113
 114       if test -n "$splt"
 115       then
 116          echo "$file: lines too long"
 117          st=1
 118          if test -n "$EDITOR" -a -n "$edit"
 119          then
 120             doed "$file" || exit 1
 121          elif test -n "$verbose"
 122          then
 123             echo "$splt"
 124          fi
 125       fi
 126       if test -n "$check_tabs"
 127       then
 128          tab="`tr -c -d '\t' <"$file"`"
 129          if test -n "$tab"
 130          then
 131             echo "$file: file contains tab characters"
 132             st=1
 133             if test -n "$EDITOR" -a -n "$edit"
 134             then
 135                doed "$file" || exit 1
 136             elif test -n "$verbose"
 137             then
 138                echo "$splt"
 139             fi
 140          fi
 141       fi
 142    done
 143    exit $st
 144 }