init terminator

README.md

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+Excel password terminator
+=========================
+
+This script removes passwords in an Excel file.
+
+Requirements
+------------
+
+* `zip` and `unzip`
+* `grep`
+* `sed`
+
+On a Debian/Ubuntu system, simply run `sudo apt install zip unzip grep sed`.
+
+Usage
+-----
+
+```
+./bin/terminate -i excel_with_passwords.xlsx -o excel_without_password.xlsx
+```
+
+You can turn on verbosity using `-v`. Help is provided with `-h`.
+
+[]!(https://upload.deblan.org/u/2021-04/6087d86b.jpg)

bin/terminate

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+#!/bin/sh
+
+usage() {
+	cat << EOF
+
+USAGE:
+  $0 [options]
+
+OPTIONS:
+  -i           Input file (required)
+  -o           Output file (required)
+  -v           Verbose
+  -h           Show this help
+
+EOF
+
+}
+
+error() {
+	if [ -n "$1" ]; then
+		printf "%s\\n" "$1" >/dev/stderr
+	fi
+
+	exit 1
+}
+
+exit_if_empty() {
+	if [ -z "$1" ]; then
+		error "$2"
+	fi
+}
+
+log() {
+	if [ "$VERBOSE" -eq 1 ]; then
+		printf "%s\\n" "$1"
+	fi
+}
+
+unzipExcel() {
+	if [ "$VERBOSE" -eq 0 ]; then
+		verbosity=-qq
+	fi
+
+	unzip $verbosity -d "$TEMP_DIRECTORY/excel" "$INPUT_FILE"
+}
+
+createExcel() {
+	current_dir="$(pwd)"
+
+	if [ "$VERBOSE" -eq 0 ]; then
+		verbosity=-q
+	fi
+
+	cd "$TEMP_DIRECTORY/excel"
+	zip $verbosity -r "../result.xslx" ./*
+	cd "$current_dir"
+	mv "$TEMP_DIRECTORY/result.xslx" "$OUTPUT_FILE"
+
+	log "$OUTPUT_FILE generated"
+}
+
+createTmpDirectory() {
+	TEMP_DIRECTORY="$(mktemp -d)"
+	log "Temp directory created: $TEMP_DIRECTORY"
+}
+
+removePassword() {
+	sed -i 's#<sheetProtection[^>]*>##' "$1"
+}
+
+removePasswords() {
+	grep -Rn sheetProtection "$TEMP_DIRECTORY" | cut -d: -f1 | while read -r file; do
+		removePassword "$file"
+		log "Password removed in: $file"
+	done
+}
+
+cleanUp() {
+	rm -fr "$TEMP_DIRECTORY" && log "Temp directory removed: $TEMP_DIRECTORY"
+}
+
+ERROR=0
+VERBOSE=0
+
+while getopts "hvi:o:" option; do
+	case "$option" in
+		i) INPUT_FILE="$OPTARG";;
+		o) OUTPUT_FILE="$OPTARG";;
+		h) usage; exit 0;;
+		v) VERBOSE=1;;
+		:) ERROR=1;;
+		?) ERROR=1;;
+	esac
+done
+
+if [ $ERROR -eq 1 ]; then
+	error "Invalid parameter\\n$(usage)"
+fi
+
+exit_if_empty "$INPUT_FILE" "Input file is missing (-i)"
+exit_if_empty "$OUTPUT_FILE" "Output file is missing (-i)"
+
+if [ ! -f "$INPUT_FILE" ]; then
+	error "No such file: $INPUT_FILE"
+fi
+
+createTmpDirectory
+unzipExcel
+removePasswords
+createExcel
+cleanUp