Initial commit

commands/commit-analysis/.scripts/git-diff-analyzer.sh

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+#!/bin/bash
+# Script: git-diff-analyzer.sh
+# Purpose: Parse git diff output for detailed file and line change analysis
+# Author: Git Commit Assistant Plugin
+# Version: 1.0.0
+#
+# Usage:
+#   git diff HEAD | ./git-diff-analyzer.sh
+#
+# Returns:
+#   JSON with file details, line counts, and change summaries
+#
+# Exit Codes:
+#   0 - Success
+#   1 - No input
+#   2 - Analysis error
+
+# Read diff from stdin
+diff_content=$(cat)
+
+if [ -z "$diff_content" ]; then
+    echo '{"error": "No diff content provided"}'
+    exit 1
+fi
+
+# Initialize counters
+total_files=0
+total_additions=0
+total_deletions=0
+declare -A file_stats
+
+# Parse diff output
+current_file=""
+while IFS= read -r line; do
+    # File headers
+    if [[ "$line" =~ ^\+\+\+\ b/(.+)$ ]]; then
+        current_file="${BASH_REMATCH[1]}"
+        ((total_files++))
+        file_stats["$current_file,additions"]=0
+        file_stats["$current_file,deletions"]=0
+        file_stats["$current_file,status"]="M"
+
+    # New file
+    elif [[ "$line" =~ ^\+\+\+\ b/(.+)$ ]] && [[ "$diff_content" == *"--- /dev/null"* ]]; then
+        file_stats["$current_file,status"]="A"
+
+    # Deleted file
+    elif [[ "$line" =~ ^---\ a/(.+)$ ]] && [[ "$diff_content" == *"+++ /dev/null"* ]]; then
+        current_file="${BASH_REMATCH[1]}"
+        file_stats["$current_file,status"]="D"
+
+    # Count additions
+    elif [[ "$line" =~ ^\+[^+] ]] && [ -n "$current_file" ]; then
+        ((total_additions++))
+        ((file_stats["$current_file,additions"]++))
+
+    # Count deletions
+    elif [[ "$line" =~ ^-[^-] ]] && [ -n "$current_file" ]; then
+        ((total_deletions++))
+        ((file_stats["$current_file,deletions"]++))
+    fi
+done <<< "$diff_content"
+
+# Build JSON output
+echo "{"
+echo "  \"summary\": {"
+echo "    \"total_files\": $total_files,"
+echo "    \"total_additions\": $total_additions,"
+echo "    \"total_deletions\": $total_deletions,"
+echo "    \"net_change\": $((total_additions - total_deletions))"
+echo "  },"
+echo "  \"files\": ["
+
+# Output file stats
+first=true
+for key in "${!file_stats[@]}"; do
+    if [[ "$key" == *",status" ]]; then
+        file="${key%,status}"
+        status="${file_stats[$key]}"
+        additions=${file_stats["$file,additions"]:-0}
+        deletions=${file_stats["$file,deletions"]:-0}
+
+        if [ "$first" = true ]; then
+            first=false
+        else
+            echo ","
+        fi
+
+        echo -n "    {"
+        echo -n "\"file\": \"$file\", "
+        echo -n "\"status\": \"$status\", "
+        echo -n "\"additions\": $additions, "
+        echo -n "\"deletions\": $deletions, "
+        echo -n "\"net\": $((additions - deletions))"
+        echo -n "}"
+    fi
+done
+
+echo ""
+echo "  ]"
+echo "}"
+
+exit 0