Moritz Martinius
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116 lines
3.3 KiB
Bash
Executable File
116 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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# update_copyright.sh
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# Updates copyright year ranges in a source file based on git history
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#
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# Usage: ./update_copyright.sh [--dry-run] <file>
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#
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# Examples:
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# # Update a single file
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# ./update_copyright.sh src/main.cpp
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#
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# # Dry-run on a single file
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# ./update_copyright.sh --dry-run src/main.cpp
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#
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# # Update all C++ files using find -exec
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# find src \( -name "*.cpp" -o -name "*.hpp" \) -exec ./update_copyright.sh {} \;
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#
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# # Dry-run on all C++ files
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# find src \( -name "*.cpp" -o -name "*.hpp" \) -exec ./update_copyright.sh --dry-run {} \;
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set -e
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# Check for dry-run flag
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DRY_RUN=false
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FILE=""
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if [ "$1" = "--dry-run" ]; then
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DRY_RUN=true
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FILE="$2"
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elif [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
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grep "^#" "$0" | sed 's/^# \?//'
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exit 0
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else
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FILE="$1"
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fi
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# Check if file argument provided
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if [ -z "$FILE" ]; then
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echo "Error: No file specified"
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echo "Usage: $0 [--dry-run] <file>"
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echo "Run '$0 --help' for more information"
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exit 1
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fi
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# Check if file exists
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if [ ! -f "$FILE" ]; then
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echo "Error: File not found: $FILE"
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exit 1
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fi
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# Get the repository root
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REPO_ROOT=$(git rev-parse --show-toplevel)
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cd "$REPO_ROOT"
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# Copyright holder name
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COPYRIGHT_HOLDER="Moritz Martinius"
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# Function to get first and last commit years for a file
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get_years_for_file() {
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local file="$1"
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# Get the year of the first commit that touched this file
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first_year=$(git log --follow --format=%ad --date=format:%Y --reverse "$file" 2>/dev/null | head -1)
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# Get the year of the last commit that touched this file
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last_year=$(git log --follow --format=%ad --date=format:%Y -1 "$file" 2>/dev/null)
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# If file is not in git, use current year
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if [ -z "$first_year" ]; then
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first_year=$(date +%Y)
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last_year=$(date +%Y)
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fi
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echo "$first_year $last_year"
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}
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# Get years from git history
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read -r first_year last_year <<< "$(get_years_for_file "$FILE")"
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# Determine the copyright year string
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if [ "$first_year" = "$last_year" ]; then
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year_string="$first_year"
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else
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year_string="$first_year-$last_year"
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fi
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# Check if file has a copyright notice
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if ! grep -q "Copyright (C)" "$FILE"; then
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echo "No copyright notice found in $FILE, skipping"
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exit 0
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fi
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if [ "$DRY_RUN" = true ]; then
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# Just show what would be changed
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current_year=$(grep "Copyright (C)" "$FILE" | sed -n 's/.*Copyright (C) \([0-9]\{4\}\(-[0-9]\{4\}\)\?\).*/\1/p' | head -1)
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if [ "$current_year" != "$year_string" ]; then
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echo "Would update $FILE: $current_year → $year_string"
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else
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echo "No change needed for $FILE (already $year_string)"
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fi
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else
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# Update the copyright line
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# Matches patterns like "Copyright (C) 2023 Moritz Martinius" or "Copyright (C) 2023-2024 Moritz Martinius"
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# Handle variable whitespace between year and name
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# Get current year from file for comparison
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current_year=$(grep "Copyright (C)" "$FILE" | sed -n 's/.*Copyright (C) \([0-9]\{4\}\(-[0-9]\{4\}\)\?\).*/\1/p' | head -1)
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if [ "$current_year" = "$year_string" ]; then
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echo "No changes needed for $FILE (already $year_string)"
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else
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sed -i "s/Copyright (C) [0-9]\{4\}\(-[0-9]\{4\}\)\? \+$COPYRIGHT_HOLDER/Copyright (C) $year_string $COPYRIGHT_HOLDER/" "$FILE"
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echo "✓ Updated $FILE: $current_year → $year_string"
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fi
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fi
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