From 62df7214a1b6602bec3e355a0729de2968db6504 Mon Sep 17 00:00:00 2001
From: Alexander Foremny <aforemny@posteo.de>
Date: Wed, 6 Sep 2023 11:03:36 +0200
Subject: add support for .sh files

---
 Makefile               |  7 ++++++-
 pkgs/tree-grepper.nix  |  7 ++++---
 src/extract-generic.sh | 17 +++++++++++++++--
 src/extract-sh.sh      |  8 ++++++++
 src/extract.sh         |  1 +
 tests/sh.sh            | 11 +++++++++++
 6 files changed, 45 insertions(+), 6 deletions(-)
 create mode 100755 src/extract-sh.sh
 create mode 100644 tests/sh.sh

diff --git a/Makefile b/Makefile
index ef3ecb6..35aa2e3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,9 @@
-test: test-elm test-nix
+test: test-sh test-elm test-nix
+
+test-sh: tests/sh.sh
+	src/extract-sh.sh tests/sh.sh | \
+		jq .text -r | \
+		cmp tests/expect
 
 test-elm: tests/elm.elm
 	src/extract-elm.sh tests/elm.elm | \
diff --git a/pkgs/tree-grepper.nix b/pkgs/tree-grepper.nix
index 591bc7e..463bf6c 100644
--- a/pkgs/tree-grepper.nix
+++ b/pkgs/tree-grepper.nix
@@ -1,9 +1,10 @@
 self: super: {
   # TODO package tree-grepper in Nixpkgs so that it can reuse <nixpkgs>
   tree-grepper = (import (self.fetchFromGitHub {
-    owner = "BrianHicks";
+    owner = "aforemny";
     repo = "tree-grepper";
-    rev = "refs/tags/2.4.1";
-    hash = "sha256-wHqVhx2JFBm+lc3/rruBBlpF2Ylv3/oOFM5CgX5WtKs=";
+    rev = "af9d7e4380f5c1b12bc671216a219c1f01a640d7";
+    hash = "sha256-QteyQ/SfcXZ2VZTRl++gRHeaR/1qnsS8tiN1RLndW5Y=";
   })).default;
 }
+
diff --git a/src/extract-generic.sh b/src/extract-generic.sh
index 0c84ec1..cadbb30 100755
--- a/src/extract-generic.sh
+++ b/src/extract-generic.sh
@@ -33,8 +33,21 @@ tree-grepper \
         text=$(echo "$item" |
           jq .match.text -r |
           sed 's/^'"$LINE_COMMENT_START"' *TODO *//' |
-          sed 's/^'"$BLOCK_COMMENT_START"' *TODO *//' |
-          sed 's/ *'"$BLOCK_COMMENT_END"'$//')
+          {
+            if test -z "${BLOCK_COMMENT_START-}"; then
+              cat
+            else
+              sed 's/^'"$BLOCK_COMMENT_START"' *TODO *//'
+            fi
+          } |
+          {
+            if test -z "${BLOCK_COMMENT_END-}"; then
+              cat
+            else
+              sed 's/ *'"$BLOCK_COMMENT_END"'$//'
+            fi
+          }
+        )
 
         echo "$item" | jq '. + {"text": $text, "last_commit": $last_commit}' \
           --arg text "$text" \
diff --git a/src/extract-sh.sh b/src/extract-sh.sh
new file mode 100755
index 0000000..c31df74
--- /dev/null
+++ b/src/extract-sh.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -efu
+
+TREE_GREPPER_LANGUAGE=sh \
+TREE_GREPPER_QUERY='((comment)+)' \
+LINE_COMMENT_START='#' \
+"$(dirname "$0")"/extract-generic.sh "$@"
diff --git a/src/extract.sh b/src/extract.sh
index ce5c4d0..07eac37 100755
--- a/src/extract.sh
+++ b/src/extract.sh
@@ -14,6 +14,7 @@ find "$input_dir" -type f | grep -Pv '/\.|~$' |
     case $input_file in
       *.elm) ext="elm" ;;
       *.nix) ext="nix" ;;
+      *.sh) ext="sh" ;;
       *) ;;
     esac
 
diff --git a/tests/sh.sh b/tests/sh.sh
new file mode 100644
index 0000000..9e7c51d
--- /dev/null
+++ b/tests/sh.sh
@@ -0,0 +1,11 @@
+#! /usr/bin/env bash
+
+# TODO add more dependencies
+export PATH=
+
+# TODO remove unnecessary content
+cat >/dev/null <<'EOF'
+  sssh!
+EOF
+
+exit 0
-- 
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