129 lines
3.4 KiB
Bash
Executable File
129 lines
3.4 KiB
Bash
Executable File
#!/bin/bash
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# Purpose: Detect code duplication using jsinspect
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# Version: 1.0.0
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# Usage: ./detect-duplication.sh <scope> [threshold]
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# Returns: 0 on success, 1 on error
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# Dependencies: npx, jsinspect
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set -euo pipefail
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# Configuration
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SCOPE="${1:-.}"
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THRESHOLD="${2:-80}"
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MIN_INSTANCES="${3:-2}"
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OUTPUT_FILE="duplication-report.json"
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# Colors for output
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RED='\033[0;31m'
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YELLOW='\033[1;33m'
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GREEN='\033[0;32m'
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NC='\033[0m' # No Color
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# Check if scope exists
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if [ ! -e "$SCOPE" ]; then
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echo -e "${RED}Error: Scope does not exist: $SCOPE${NC}" >&2
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exit 1
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fi
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echo "Detecting code duplication in: $SCOPE"
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echo "Similarity threshold: ${THRESHOLD}%"
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echo "Minimum instances: $MIN_INSTANCES"
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echo ""
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# Check if npx is available
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if ! command -v npx &> /dev/null; then
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echo -e "${RED}Error: npx not found. Please install Node.js and npm.${NC}" >&2
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exit 1
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fi
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# Run jsinspect
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echo "Analyzing code for duplicates..."
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npx jsinspect "$SCOPE" \
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--threshold "$THRESHOLD" \
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--min-instances "$MIN_INSTANCES" \
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--ignore "node_modules|dist|build|coverage|test|__tests__|*.spec.*|*.test.*" \
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--reporter json \
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> "$OUTPUT_FILE" 2>&1 || true
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# Parse results
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if [ -f "$OUTPUT_FILE" ]; then
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# Check if output is valid JSON
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if ! jq empty "$OUTPUT_FILE" 2>/dev/null; then
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# Not JSON, probably text output or error
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if [ -s "$OUTPUT_FILE" ]; then
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echo -e "${YELLOW}Warning: Output is not JSON format${NC}"
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cat "$OUTPUT_FILE"
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else
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echo -e "${GREEN}No duplicates found!${NC}"
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echo "Duplication threshold: ${THRESHOLD}%"
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echo "Status: PASSED"
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rm -f "$OUTPUT_FILE"
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exit 0
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fi
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else
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# Valid JSON output
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DUPLICATE_COUNT=$(jq 'length' "$OUTPUT_FILE")
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if [ "$DUPLICATE_COUNT" -eq 0 ]; then
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echo -e "${GREEN}No duplicates found!${NC}"
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echo "Duplication threshold: ${THRESHOLD}%"
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echo "Status: PASSED"
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rm -f "$OUTPUT_FILE"
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exit 0
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fi
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echo ""
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echo "=== Duplication Analysis Results ==="
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echo "Duplicate blocks found: $DUPLICATE_COUNT"
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echo ""
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# Show duplicate details
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echo -e "${RED}Duplicate Code Blocks:${NC}"
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echo ""
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jq -r '
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.[] |
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"Block \(.id // "N/A"):",
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" Lines: \(.lines)",
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" Instances: \(.instances | length)",
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" Locations:",
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(.instances[] | " - \(.path):\(.lines[0])-\(.lines[1])"),
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""
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' "$OUTPUT_FILE" | head -100
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echo ""
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echo "Full report saved to: $OUTPUT_FILE"
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# Calculate statistics
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TOTAL_INSTANCES=$(jq '[.[].instances | length] | add' "$OUTPUT_FILE")
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AVG_LINES=$(jq '[.[].lines] | add / length | floor' "$OUTPUT_FILE")
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echo ""
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echo "=== Statistics ==="
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echo "Total duplicate instances: $TOTAL_INSTANCES"
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echo "Average duplicate size: $AVG_LINES lines"
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echo ""
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if [ "$DUPLICATE_COUNT" -gt 10 ]; then
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echo -e "${RED}Status: HIGH DUPLICATION - $DUPLICATE_COUNT blocks found${NC}"
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elif [ "$DUPLICATE_COUNT" -gt 5 ]; then
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echo -e "${YELLOW}Status: MODERATE DUPLICATION - $DUPLICATE_COUNT blocks found${NC}"
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else
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echo -e "${YELLOW}Status: LOW DUPLICATION - $DUPLICATE_COUNT blocks found${NC}"
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fi
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echo ""
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echo "Recommendations:"
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echo "1. Extract duplicate code to shared functions/components"
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echo "2. Use parameterization to reduce duplication"
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echo "3. Consider design patterns (Strategy, Template Method)"
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fi
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else
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echo -e "${RED}Error: Failed to generate duplication report${NC}" >&2
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exit 1
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fi
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exit 0
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