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      1 #!/bin/sh
      2 #
      3 # Usage:
      4 #
      5 #  tests/pngstest gamma alpha
      6 #
      7 # Run ./pngstest on the PNG files in $srcdir/contrib/testpngs which have the
      8 # given gamma and opacity:
      9 #
     10 #  gamma: one of; linear, 1.8, sRGB, none.
     11 #  alpha: one of; opaque, tRNS, alpha, none.  'none' is equivalent to !alpha
     12 #
     13 # NOTE: the temporary files pngstest generates have the base name gamma-alpha to
     14 # avoid issues with make -j
     15 #
     16 gamma="$1"
     17 shift
     18 alpha="$1"
     19 shift
     20 args=
     21 LC_ALL="C" # fix glob sort order to ASCII:
     22 for f in "${srcdir}/contrib/testpngs/"*.png
     23 do
     24    g=
     25    case "$f" in
     26       *-linear[.-]*)
     27          test "$gamma" = "linear" && g="$f";;
     28 
     29       *-sRGB[.-]*)
     30          test "$gamma" = "sRGB" && g="$f";;
     31 
     32       *-1.8[.-]*)
     33          test "$gamma" = "1.8" && g="$f";;
     34 
     35       *)
     36          test "$gamma" = "none" && g="$f";;
     37    esac
     38 
     39    case "$g" in
     40       "")
     41          :;;
     42 
     43       *-alpha[-.]*)
     44          test "$alpha" = "alpha" && args="$args $g";;
     45 
     46       *-tRNS[-.]*)
     47          test "$alpha" = "tRNS" -o "$alpha" = "none" && args="$args $g";;
     48 
     49       *)
     50          test "$alpha" = "opaque" -o "$alpha" = "none" && args="$args $g";;
     51    esac
     52 done
     53 # This only works if the arguments don't contain spaces; they don't.
     54 exec ./pngstest --tmpfile "${gamma}-${alpha}-" --log ${1+"$@"} $args
     55