feat: initial commit

bin/prepare-pdf-noting

@@ -0,0 +1,40 @@
+#!/bin/sh
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+pdf_to_pngs() {
+    mkdir -p "$2"
+    pdftoppm -rx 300 -ry 300 -png "$1" "$2/page"
+}
+
+invert_pngs() {
+    pushd "$1"
+    for page in page-*.png; do
+        convert -negate "${page}" "neg-${page}"
+        mv "neg-${page}" "${page}"
+    done
+    popd
+}
+
+pngs_to_oras() {
+    pushd "$1"
+    for page in page-*.png; do
+        "${SCRIPT_DIR}/png_to_ora" "${page}"
+        rm "${page}"
+    done
+    popd
+}
+
+if [[ $# -ne 2 ]]; then
+    >&2 echo "Usage ./prepare-pdf-noting <pdf-file> <notes-folder>"
+    exit 1
+fi
+
+set -xe
+
+PDF_FILE="$1"
+NOTES_FOLDER="$2"
+
+pdf_to_pngs "${PDF_FILE}" "${NOTES_FOLDER}"
+invert_pngs "${NOTES_FOLDER}"
+pngs_to_oras "${NOTES_FOLDER}"