src/png/scripts/chkfmt

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