Script for Changing Casing of Files

Here's a script you can use to automatically fix the file casings in a given directory. Let's say you have a directory like this:

1resources/
2├── js/
3│   ├── Components/
4│   |   ├── button.tsx

The script would fix it to be like so:

1resources/
2├── js/
3│   ├── components/
4│   |   ├── Button.tsx

Folder names become kebab-case and file names become PascalCase.

Usage:

1./fix-casings.sh folderName

 1#!/bin/bash
 2 
 3# Function to convert to kebab-case
 4to_kebab_case() {
 5    echo "$1" | sed -E 's/([a-z0-9])([A-Z])/\1-\2/g' | tr '[:upper:]' '[:lower:]' | tr ' ' '-' | tr '_' '-'
 6}
 7 
 8# Function to convert to PascalCase
 9to_pascal_case() {
10    filename=$1
11    # Split into name and extension
12    name="${filename%.*}"
13    extension="${filename##*.}"
14 
15    # If there's no extension, just process the name
16    if [ "$name" = "$extension" ]; then
17        echo "$name" | perl -pe 's/(^|[-_]|\s+)([a-z])/\U$2/g'
18    else
19        # Process name and reattach extension
20        processed_name=$(echo "$name" | perl -pe 's/(^|[-_]|\s+)([a-z])/\U$2/g')
21        echo "${processed_name}.${extension}"
22    fi
23}
24 
25DIR=$1
26 
27# Get all files tracked by git
28git ls-files "$DIR" | while read -r file; do
29    dir=$(dirname "$file")
30    filename=$(basename "$file")
31 
32    # Skip if it's in the .git directory
33    if [[ "$dir" == .git* ]]; then
34        continue
35    fi
36 
37    # Convert directory path to kebab-case
38    new_dir=$(echo "$dir" | tr '/' '\n' | while read -r part; do
39        if [ "$part" != "." ]; then
40            to_kebab_case "$part"
41        else
42            echo "."
43        fi
44    done | tr '\n' '/' | sed 's/\/$//')
45 
46    # Convert filename to PascalCase
47    new_filename=$(to_pascal_case "$filename")
48 
49    # Construct new path
50    new_path="${new_dir}/${new_filename}"
51 
52    # Only rename if there's a change
53    if [ "$file" != "$new_path" ]; then
54        # Use temporary name to avoid case-sensitivity issues
55        temp_path="${new_dir}/temp_${RANDOM}_${new_filename}"
56        git mv "$file" "$temp_path" 2>/dev/null
57        git mv "$temp_path" "$new_path" 2>/dev/null
58        echo "Renamed: $file → $new_path"
59    fi
60done

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