Move scripts dir inside hm

And remove weird path contraptions

hm/scripts/overpdf

@@ -0,0 +1,64 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash --pure
+#! nix-shell -p bash pdftk inkscape gnused coreutils file
+
+# Utility to write over a PDF file pages
+
+# TODO Inkscape vodoo: Put the original in its own layer and skip when merging
+
+orig_path="$1"
+
+orig_dir="$(dirname "$orig_path")"
+orig_file="$(basename "$orig_path")"
+orig_ext="${orig_file##*.}"
+orig_name="${orig_file%.*}"
+
+wdir_file="${orig_name}_src.${orig_ext}"
+wdir_path="${orig_dir}/${wdir_file}"
+
+if [ -d "$wdir_path" ]
+then
+    echo "Source directory $wdir_path found"
+    ls "${wdir_path}/"*"_og.pdf" | while read page_orig_path
+    do
+        page_stmp_svg="$(echo "$page_orig_path" | sed 's|_og\.pdf$|_fg\.svg|')"
+        page_stmp_pdf="$(echo "$page_orig_path" | sed 's|_og\.pdf$|_fg\.pdf|')"
+        page_fin_pdf="$(echo "$page_orig_path" | sed 's|_og\.pdf$|_fin\.pdf|')"
+        if [ -f "$page_stmp_svg" ]
+        then
+            echo "Processing $page_orig_path (applying stamp)"
+            inkscape "$page_stmp_svg" --export-filename "$page_stmp_pdf"
+            pdftk "$page_orig_path" stamp "$page_stmp_pdf" output "$page_fin_pdf"
+        else
+            echo "Processing $page_orig_path (copying)"
+            cp "$page_orig_path" "$page_fin_pdf"
+        fi
+    done
+    echo "Merging everything back to ${orig_path}."
+    pdftk "${wdir_path}/"*"_fin.pdf" output "$orig_path"
+    echo "Deleting temporary files."
+    rm "${wdir_path}/"*"_fin.pdf" "${wdir_path}/"*"_fg.pdf"
+    echo "Done."
+elif [ -f "$orig_path" ]
+then
+    if [ "$(file --mime-type --brief "$orig_path")" != "application/pdf" ]
+    then
+        echo "${orig_path}: not a PDF file"
+        exit 1
+    fi
+    echo "Creating source directory $wdir_path with original pages and template SVGs"
+    mkdir "$wdir_path"
+    pdftk "$orig_file" burst output "${wdir_path}/${orig_name}_%03d_og.pdf"
+    ls "${wdir_path}/"*"_og.pdf" | while read page_orig_path
+    do
+        page_stmp_svg="$(echo "$page_orig_path" | sed 's|_og\.pdf$|_fg\.svg|')"
+        echo "Processing $page_orig_path"
+        inkscape "$page_orig_path" --export-plain-svg --export-filename "$page_stmp_svg"
+    done
+    echo "Done. Make sure to edit in a a new layer in Inkscape and hide the original one."
+else
+    echo "${orig_path}: no such file or directory"
+    exit 1
+fi
+
+