Initial commit
This commit is contained in:
Zhongwei Li
250
skills/get-git-diff/scripts/file_operations.sh
Executable file
250
skills/get-git-diff/scripts/file_operations.sh
Executable file
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#!/usr/bin/env bash
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#
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# Git File Operations Functions
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#
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# Functions for analyzing file operations in diffs (add, modify, delete, rename).
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#
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# Author: Claude Code get-git-diff skill
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# Version: 1.0.0
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set -euo pipefail
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#######################################
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# Get file operations (add, modify, delete, rename)
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# $3 - detect renames (optional, default: true)
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# Outputs:
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# File operations, one per line (status TAB path)
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#######################################
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get_file_operations() {
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local commit1="$1"
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local commit2="$2"
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local detect_renames="${3:-true}"
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local cmd="git diff --name-status"
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if [[ "${detect_renames}" == "true" ]]; then
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cmd="${cmd} -M"
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fi
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${cmd} "${commit1}...${commit2}" 2>/dev/null
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}
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#######################################
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# Count file operations by type
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# Outputs:
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# Tab-separated: added modified deleted renamed copied
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#######################################
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count_file_operations() {
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local commit1="$1"
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local commit2="$2"
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local operations
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operations=$(get_file_operations "${commit1}" "${commit2}")
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local added=0 modified=0 deleted=0 renamed=0 copied=0
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while IFS= read -r line; do
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[[ -z "${line}" ]] && continue
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local status="${line:0:1}"
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case "${status}" in
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A) ((added++)) ;;
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M) ((modified++)) ;;
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D) ((deleted++)) ;;
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R) ((renamed++)) ;;
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C) ((copied++)) ;;
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esac
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done <<< "${operations}"
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echo "${added} ${modified} ${deleted} ${renamed} ${copied}"
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}
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#######################################
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# Get files by operation type
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# $3 - operation type (A, M, D, R, C)
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# Outputs:
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# List of files, one per line
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#######################################
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get_files_by_operation() {
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local commit1="$1"
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local commit2="$2"
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local operation_type="$3"
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local operations
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operations=$(get_file_operations "${commit1}" "${commit2}")
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echo "${operations}" | awk -v op="${operation_type}" '$1 ~ "^"op {print $2}'
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}
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#######################################
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# Get renamed files with old and new paths
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# Outputs:
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# Tab-separated: similarity old_path new_path (one per line)
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#######################################
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get_renamed_files() {
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local commit1="$1"
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local commit2="$2"
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local operations
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operations=$(get_file_operations "${commit1}" "${commit2}" true)
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echo "${operations}" | awk '
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/^R[0-9]+/ {
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similarity = substr($1, 2)
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old_path = $2
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new_path = $3
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print similarity "\t" old_path "\t" new_path
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}
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'
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}
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#######################################
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# Get binary files in diff
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# Outputs:
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# List of binary file paths, one per line
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#######################################
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get_binary_files() {
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local commit1="$1"
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local commit2="$2"
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local numstat
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if numstat=$(git diff --numstat "${commit1}...${commit2}" 2>/dev/null); then
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echo "${numstat}" | awk '$1 == "-" && $2 == "-" {print $3}'
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fi
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}
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#######################################
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# Count binary files
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# Outputs:
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# Number of binary files
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#######################################
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count_binary_files() {
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local commit1="$1"
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local commit2="$2"
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get_binary_files "${commit1}" "${commit2}" | wc -l | tr -d ' '
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}
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#######################################
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# Categorize files by type
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# Arguments:
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# Reads file paths from stdin, one per line
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# Outputs:
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# Tab-separated: source tests docs config database other
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#######################################
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categorize_files() {
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local source=0 tests=0 docs=0 config=0 database=0 other=0
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while IFS= read -r path; do
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[[ -z "${path}" ]] && continue
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# Categorize based on path and extension
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if [[ "${path}" =~ test|tests/ ]]; then
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((tests++))
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elif [[ "${path}" =~ \.md$|doc ]]; then
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((docs++))
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elif [[ "${path}" =~ config|settings|\.env|\.ya?ml$|\.json$|\.toml$|\.ini$ ]]; then
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((config++))
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elif [[ "${path}" =~ migration|schema|models ]]; then
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((database++))
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elif [[ "${path}" =~ \.(py|js|ts|java|go|rs|cpp|c|rb|php|swift|kt)$ ]]; then
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((source++))
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else
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((other++))
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fi
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done
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echo "${source} ${tests} ${docs} ${config} ${database} ${other}"
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}
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#######################################
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# Get categorized file counts from diff
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# Arguments:
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# $1 - first commit
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# $2 - second commit
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# Outputs:
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# Tab-separated category counts
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#######################################
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get_categorized_counts() {
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local commit1="$1"
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local commit2="$2"
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get_file_operations "${commit1}" "${commit2}" | cut -f2 | categorize_files
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}
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# Allow script to be sourced or run directly
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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# Example usage
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if [[ $# -lt 2 ]]; then
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echo "Usage: $0 <commit1> <commit2>"
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echo ""
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echo "Examples:"
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echo " $0 HEAD^ HEAD"
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echo " $0 main feature-branch"
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exit 1
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fi
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commit1="$1"
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commit2="$2"
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echo "=== File Operations: ${commit1} → ${commit2} ==="
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counts=$(count_file_operations "${commit1}" "${commit2}")
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IFS=$'\t' read -r added modified deleted renamed copied <<< "${counts}"
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echo "Added: ${added}"
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echo "Modified: ${modified}"
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echo "Deleted: ${deleted}"
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echo "Renamed: ${renamed}"
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echo "Copied: ${copied}"
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binary_count=$(count_binary_files "${commit1}" "${commit2}")
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echo "Binary: ${binary_count}"
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if [[ ${added} -gt 0 ]]; then
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echo ""
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echo "=== Added Files ==="
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get_files_by_operation "${commit1}" "${commit2}" "A" | head -10
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if [[ ${added} -gt 10 ]]; then
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echo " ... and $((added - 10)) more"
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fi
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fi
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if [[ ${renamed} -gt 0 ]]; then
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echo ""
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echo "=== Renamed Files ==="
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get_renamed_files "${commit1}" "${commit2}" | head -10 | while IFS=$'\t' read -r sim old new; do
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echo " ${old} → ${new} (${sim}%)"
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done
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if [[ ${renamed} -gt 10 ]]; then
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echo " ... and $((renamed - 10)) more"
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fi
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fi
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echo ""
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echo "=== File Categorization ==="
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categories=$(get_categorized_counts "${commit1}" "${commit2}")
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IFS=$'\t' read -r source tests docs config database other <<< "${categories}"
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echo "Source code: ${source}"
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echo "Tests: ${tests}"
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echo "Documentation: ${docs}"
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echo "Configuration: ${config}"
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echo "Database: ${database}"
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echo "Other: ${other}"
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fi
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