Added tools/generateLensList Bash4 script to make updating lens ID from exiftool for rtexif/* easy

tools/generateLensList

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+# This Bash4 script generates lens ID lists for rtexif/*.cc files using
+# the exiftool version installed on the host system, so make sure you have
+# the latest version of exiftool installed before running this script.
+# It uses xmlstarlet to parse exiftool's output so make sure you have that.
+#
+# Run the script from the project root:
+#   ./tools/generateLensList
+#
+# Manually replace old code in rtexif/* with new from /tmp/rt-generateLensList/*
+#
+# Blame DrSlony
+# Please report bugs or enhancements to https://github.com/Beep6581/RawTherapee
+
+hash exiftool 2>/dev/null || { echo >&2 "Exiftool not found, install it first."; exit 1; }
+hash xmlstarlet 2>/dev/null || { echo >&2 "XMLStarlet not found, install it first."; exit 1; }
+
+unset cam cams
+
+cams=("canon" "olympus" "pentax" "sony")
+tmpdir="/tmp/rt-generateLensList"
+
+head -n 15 "$0" | tail -n 14
+printf '%s\n' "exiftool version: $(exiftool -ver)" "" "XMLStarlet version: $(xmlstarlet --version)"  | sed 's/^/# /'
+
+if [[ -d ${tmpdir} ]]; then
+    printf '%s\n' "" "Removing temp folder: $tmpdir"
+    rm -rvI "$tmpdir" || exit 1
+fi
+mkdir -p "$tmpdir" || { printf '%s\n' "Error creating $tmpdir" ""; exit 1; }
+echo
+
+for cam in "${cams[@]}"; do
+    printf '%s\n' "Saving ${tmpdir}/${cam}"
+    xmlstarlet sel -T -t -m "taginfo/table/tag[@name='LensType']/values/key" -v "concat(@id,'	',val)" -n < <(exiftool -listx -"$cam":all) > "${tmpdir}/cam" || { printf '%s\n' "Saving failed: ${tmpdir}/cam"; exit 1; }
+    sort -fuV "${tmpdir}/cam" > "${tmpdir}/${cam}"
+    rm -f "${tmpdir}/cam"
+    case $cam in
+        canon) sed -r -i -e '/-1\tn\/a/d' -e 's/([0-9]+)[0-9.]*\t/\1, "/' -e 's/^/        choices.insert(p_t(/' -e 's/$/"));/' "${tmpdir}/canon" ;;
+        olympus) sed -i -e '/0 00 00\tNone/d' -e 's/^/        lenses["0/' -e 's/\t/"] = "/' -e 's/$/";/' "${tmpdir}/olympus" ;;
+        pentax) sed -r -i -e 's/^/        choices.insert(p_t(256 * /' -e 's/([0-9]+) ([0-9]+)([0-9.]*)/\1 + \2/' -e 's/\t/, "/' -e 's/$/"));/' "${tmpdir}/pentax" ;;
+        sony)
+            # Sony has more lenses under the LensType2 tag
+            printf '%s\n' "Saving ${tmpdir}/sony-lenstype2"
+            xmlstarlet sel -T -t -m "taginfo/table/tag[@name='LensType2']/values/key" -v "concat(@id,'	',val)" -n < <(exiftool -listx -sony:all) > "${tmpdir}/cam" || { printf '%s\n' "Saving failed: ${tmpdir}/cam"; exit 1; }
+            sort -fuV "${tmpdir}/cam" > "${tmpdir}/sony-lenstype2"
+            rm -f "${tmpdir}/cam"
+            # Pad IDs shorter than 5 digits with 0s
+            sed -r -i -e 's/^[0-9]/0000&/' -e 's/0*([0-9]{5,})/\1/' "${tmpdir}/sony-lenstype2"
+            sed -r -i -e '/255\tTamron Lens (255)/d' -e 's/([0-9]+)[0-9.]*\t/\1, "/' -e 's/^/        choices.insert(p_t(/' -e 's/$/"));/' ${tmpdir}/sony ${tmpdir}/sony-lenstype2
+            ;;
+    esac
+
+done
+