From 6233b892cfc6ba9295c02d155be164a835b33b5b Mon Sep 17 00:00:00 2001
From: Suzanne Soy <jsmaniac.github@suzanne.soy>
Date: Thu, 7 Oct 2021 12:29:33 +0100
Subject: [PATCH] Make a quine for an existing directory (TODO: add the hashes
 of the files/subdirectories automatically)

---
 update_quine.sh | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/update_quine.sh b/update_quine.sh
index 1ce384e..614f9f0 100755
--- a/update_quine.sh
+++ b/update_quine.sh
@@ -2,14 +2,22 @@
 
 set -euET -o pipefail
 
-# Please note that the strings PLACEHOLDER, PLACEHOLDER_START, PLACEHOLDER_DELETE and PLACEHOLDER_END must not appear wrapped with XXX_thestring_XXX anywhere else in the .html file
-sed -i -e 's/XXX_PLACE''HOLDER_START_XXX/&\n\/\/ XXX_PLACE''HOLDER_DELETE_XXX/' index.html
-sed -i -e '/XXX_PLACE''HOLDER_DELETE_XXX/,/XXX_PLACE''HOLDER_END_XXX/d' index.html
-sed -i -e 's/XXX_PLACE''HOLDER_START_XXX/&\nvar src1 = "XXX_PLACE''HOLDER_XXX";\nvar hexLineWidth = 160;\n\/\/ XXX_PLACE''HOLDER_END_XXX/' index.html
-xxd -ps < index.html | tr -d \\n | fold -w 160 | sed -e 's/.*''/"&" +/' | sed -e '1s/^/var src1 = /' | sed -e '$s/ +$/;\n/' > index.html.hex
-sed -i -e '/var src1 = "XXX_PLACE''HOLDER_XXX";/ r index.html.hex' index.html
-sed -i -e '/var src1 = "XXX_PLACE''HOLDER_XXX";/d' index.html
-rm -f index.html.hex
-cp -f index.html /tmp/new
-ipfs add --hidden -Qr /tmp/new
+directory="${1:-.}"
+if test -z "$directory" -o "$directory" = "-h" -o "$directory" = "--help"; then
+  echo 'Usage: ./update-quine.sh [path/to/directory]'
+  echo 'The given directory should contain a file named index.html, which should contain the markers XXX_PLACEHOLDER_XXX and XXX_PLACEHOLDER_END_XXX'
+  exit 1
+fi
 
+# Please note that the strings PLACEHOLDER, PLACEHOLDER_START, PLACEHOLDER_DELETE and PLACEHOLDER_END must not appear wrapped with XXX_thestring_XXX anywhere else in the .html file
+sed -i -e 's/XXX_PLACE''HOLDER_START_XXX/&\n\/\/ XXX_PLACE''HOLDER_DELETE_XXX/' "$directory"/index.html
+sed -i -e '/XXX_PLACE''HOLDER_DELETE_XXX/,/XXX_PLACE''HOLDER_END_XXX/d' "$directory"/index.html
+sed -i -e 's/XXX_PLACE''HOLDER_START_XXX/&\nvar src1 = "XXX_PLACE''HOLDER_XXX";\nvar hexLineWidth = 160;\n\/\/ XXX_PLACE''HOLDER_END_XXX/' "$directory"/index.html
+xxd -ps < "$directory"/index.html | tr -d \\n | fold -w 160 | sed -e 's/.*''/"&" +/' | sed -e '1s/^/var src1 = /' | sed -e '$s/ +$/;\n/' > "$directory"/index.html.hex
+# TODO: escape $directory inside the sed command, or put the temporary .hex file in a location that doesn't need escpaing.
+sed -i -e '/var src1 = "XXX_PLACE''HOLDER_XXX";/ r '"$directory"'/index.html.hex' "$directory"/index.html
+sed -i -e '/var src1 = "XXX_PLACE''HOLDER_XXX";/d' "$directory"/index.html
+rm -f "$directory"/index.html.hex
+
+echo "The hash given by the page should be:"
+ipfs cid base32 "$(ipfs add --hidden -Qr "$directory")"