Add 2005/boutines/try.sh

2005/boutines/README.md

@@ -7,37 +7,38 @@ make
 
 ## To use:
 
-You will need an [SVG](https://www.w3.org/TR/SVG11/expanded-toc.html) viewer.
+You will need an [SVG](https://www.w3.org/TR/SVG11/expanded-toc.html) viewer or
+a converter like [ImageMagick](https://imagemagick.org/index.php)'s `convert`.
+
 Look here to find some [SVG Viewer
 Implementations](https://www.w3.org/Graphics/SVG/WG/wiki/Implementations).
 
-The following will create an `SVG` file:
-
 ```sh
-ruby -e '20.times{puts "#{rand} #{rand}"}' | ./boutines > test.svg
+./boutines < input > output.svg
 ```
 
 
 ## Try:
 
 ```sh
-./boutines < input.txt > result.svg
+./try.sh
 ```
 
-After running the above commands, use [ImageMagick](https://imagemagick.org/index.php)'s
-`convert` tool to convert the images to a png file:
+If `ruby` is installed [try.sh](try.sh) will generate an SVG file by:
 
 ```sh
-convert test.svg test.png
-
-convert result.svg result.png
+ruby -e '20.times{puts "#{rand} #{rand}"}' | ./boutines > test.svg
 ```
 
-and then open it with your preferred graphics viewer or editor.
+It will also create an SVG file with the file [input.txt](input.txt).
+
+The script will check if `convert` is available and if so it will try converting
+the SVG file(s) to PNG file(s) which you should be able to view in most any
+graphics viewer, editor or web browser.
 
 If you have a program that opens
 [SVG](https://www.w3.org/TR/SVG11/expanded-toc.html) files then you could open
-the `test.svg` file directly. An example program is
+the `test.svg` and `result.svg` files directly. An example program is
 [Inkscape](https://inkscape.org). See the
 [list](https://www.w3.org/Graphics/SVG/WG/wiki/Implementations) cited above for
 others.

2005/boutines/try.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2005/boutines
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+# see if the user has ruby installed
+#
+RUBY="$(type -P ruby)"
+
+# see if convert(1) is available (hopefully from ImageMagick :-) )
+#
+CONVERT="$(type -P convert)"
+
+if [[ -n "$RUBY" ]]; then
+    echo "$ $RUBY -e '20.times{puts \"\#{rand} \#{rand}\"}' | ./boutines > test.svg" 1>&2
+    read -r -n 1 -p "Press any key to continue: "
+    echo 1>&2
+    "$RUBY" -e '20.times{puts "#{rand} #{rand}"}' | ./boutines > test.svg
+else
+    echo "ruby not installed, skipping generation of an SVG file via ruby." 1>&2
+fi
+
+read -r -n 1 -p "Press any key to run: ./boutines < input.txt > result.svg: "
+echo 1>&2
+./boutines < input.txt > result.svg
+echo 1>&2
+
+if [[ ! -f result.svg && ! -f test.svg ]]; then
+    echo "failed to create any SVG file, exiting." 1>&2
+    exit 1
+fi
+
+if [[ -n "$CONVERT" ]]; then
+
+    read -r -n 1 -p "Press any key to run: convert test.svg test.png: "
+    echo 1>&2
+    if ! convert test.svg test.png; then
+	echo "Failed to convert test.svg to test.png, try a graphics viewer that" 1>&2
+	echo "can view SVG files." 1>&2
+    else
+	echo "Now try viewing test.png with your favourite graphics viewer." 1>&2
+    fi
+
+    echo 1>&2
+    read -r -n 1 -p "Press any key to run: convert result.svg result.png: "
+    echo 1>&2
+    if ! convert result.svg result.png; then
+	echo "Failed to convert result.svg to result.png, try a graphics viewer that" 1>&2
+	echo "can view SVG files." 1>&2
+    else
+	echo "Now try viewing result.png with your favourite graphics viewer." 1>&2
+    fi
+else
+    echo 1>&2
+    echo "convert not found (ImageMagick not installed?)" 1>&2
+    echo "Try viewing *.svg with a graphics viewer that can view SVG files." 1>&2
+fi