Add source-highlight support to HTML output

1 files changed, 27 insertions, 0 deletions

diff --git a/src/asciideck_source_highlight.erl b/src/asciideck_source_highlight.erl
new file mode 100644
index 0000000..24c3054
--- /dev/null
+++ b/src/asciideck_source_highlight.erl
@@ -0,0 +1,27 @@
+%% Copyright (c) 2018, Loïc Hoguin <[email protected]>
+%%
+%% Permission to use, copy, modify, and/or distribute this software for any
+%% purpose with or without fee is hereby granted, provided that the above
+%% copyright notice and this permission notice appear in all copies.
+%%
+%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+%% https://www.gnu.org/software/src-highlite/source-highlight.html
+-module(asciideck_source_highlight).
+
+-export([filter/2]).
+
+filter(Input, #{2 := Lang}) ->
+	TmpFile = "/tmp/asciideck-" ++ integer_to_list(erlang:phash2(make_ref())),
+	ok = file:write_file(TmpFile, Input),
+	Output = os:cmd(io_lib:format(
+		"source-highlight -i ~s -s ~s",
+		[TmpFile, Lang])),
+	file:delete(TmpFile),
+	unicode:characters_to_binary(Output).