name : add fix_numbering that fixes leading numbers.

.config/bash/module/name.sh

@@ -474,3 +474,83 @@ function name_replace() {
 		false
 	fi
 }
+
+# Fix numbering for numbered files. I.e if there are 10 items and some of them start without zero, then append zero to it. 1..10 -> 01..10.
+# Usage: name_fix_numbering [FILES]
+function name_fix_numbering() {
+	local IFS=$'\n'
+	local targets=("${@}")
+	local count=0
+	local total=${#}
+	local failed=0
+	local power=0
+
+	# All files by default.
+	if [[ "${targets[*]}" = "" ]]; then
+		targets=(*)
+		total=${#targets[@]}
+	fi
+
+	# Count leading zeroes.
+	local highest=0
+	for target in "${targets[@]}"; do
+		local digits=($(_parse_ints "${target}"))
+		local digit="${digits[0]}"
+		digit=$((10#${digit}))
+
+		[[ "${digit}" -gt "${highest}" ]] && highest="${digit}"
+	done
+
+	local i=${highest}
+	while [[ i -gt 0 ]]; do
+		((power++))
+		i=$((${i}/10))
+	done
+
+	# Process.
+	for target in "${targets[@]}"; do
+		((count++))
+
+		local status="[${count}/${total}] ${target}"
+
+		# Check that starts with a digit.
+		if [[ ! "${target}" =~ ^[0-9] ]]; then
+			echo "${status}"
+			continue
+		fi
+
+		# Prepare new name.
+		local digits=($(_parse_ints "${target}"))
+		local digit="${digits[0]}"
+		digit=$((10#${digit}))
+		local new_name=$(printf "%0${power}d" "${digit}")"${target#${digits[0]}}"
+
+		status="${status} -> ${new_name}"
+
+		# Skip if the same.
+		if [[ "${target}" = "${new_name}" ]]; then
+			echo "${status}"
+			continue
+		fi
+
+		# Check that file does not exist.
+		if [[ -e "${new_name}" ]]; then
+			echo -e "${color_bred}${status}: File exists!${color_default}"
+			return 1
+		fi
+
+		echo "${status}"
+
+		mv -- "${target}" "${new_name}"
+
+		if [[ ${?} != 0 ]]; then
+			echo -e "${color_bred}${status}: Failed.${color_default}"
+			((failed++))
+		fi
+	done
+
+	if [[ ${failed} != 0 ]]; then
+		echo -e "${color_bred}Failed: ${failed}.${color_default}"
+		false
+	fi
+}

.config/bash/module/util.sh

@@ -2,3 +2,8 @@
 function _core_count() {
 	cat /proc/cpuinfo | grep ^processor | wc -l
 }
+
+# Parse integers from mixed string.
+function _parse_ints() {
+	echo "${*}" | tr '\n' ' ' | sed -e 's/[^0-9]/ /g' -e 's/^ *//g' -e 's/ *$//g' | tr -s ' ' | sed 's/ /\n/g'
+}

.doc/bash.md

@@ -223,6 +223,7 @@ Command|Description
 `name_prefix <OLD> <NEW> [FILES]`|Change file name prefix. All matching files by default. 
 `name_postfix <OLD> <NEW> [FILES]`|Change file name postfix. All matching files by default. 
 `name_replace <OLD> <NEW> [FILES]`|Replace part of the name. All matching files by default. 
+`name_fix_numbering [FILES]`|Fix numbering for numbered files. I.e if there are 10 items and some of them start without zero, then append zero to it. 1..10 -> 01..10. 
 
 ## Ncdu.