Initial commit

skills/argparse-patterns/scripts/generate-parser.sh

@@ -0,0 +1,213 @@
+#!/usr/bin/env bash
+# Generate argparse parser from specification
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TEMPLATES_DIR="$(dirname "$SCRIPT_DIR")/templates"
+
+usage() {
+    cat <<EOF
+Generate argparse parser from specification
+
+Usage: $(basename "$0") [OPTIONS]
+
+Options:
+    -n, --name NAME          Parser name (required)
+    -d, --description DESC   Parser description
+    -s, --subcommands        Include subcommands
+    -c, --choices            Include choice validation
+    -g, --groups             Include argument groups
+    -o, --output FILE        Output file (default: stdout)
+    -h, --help               Show this help
+
+Examples:
+    $(basename "$0") -n mycli -d "My CLI tool" -o mycli.py
+    $(basename "$0") -n deploy -s -c -o deploy.py
+EOF
+    exit 1
+}
+
+# Parse arguments
+NAME=""
+DESCRIPTION=""
+SUBCOMMANDS=false
+CHOICES=false
+GROUPS=false
+OUTPUT=""
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -n|--name)
+            NAME="$2"
+            shift 2
+            ;;
+        -d|--description)
+            DESCRIPTION="$2"
+            shift 2
+            ;;
+        -s|--subcommands)
+            SUBCOMMANDS=true
+            shift
+            ;;
+        -c|--choices)
+            CHOICES=true
+            shift
+            ;;
+        -g|--groups)
+            GROUPS=true
+            shift
+            ;;
+        -o|--output)
+            OUTPUT="$2"
+            shift 2
+            ;;
+        -h|--help)
+            usage
+            ;;
+        *)
+            echo "Error: Unknown option $1"
+            usage
+            ;;
+    esac
+done
+
+if [ -z "$NAME" ]; then
+    echo "Error: --name is required"
+    usage
+fi
+
+# Set defaults
+DESCRIPTION="${DESCRIPTION:-$NAME CLI tool}"
+
+# Generate parser
+generate_parser() {
+    cat <<EOF
+#!/usr/bin/env python3
+"""
+$DESCRIPTION
+
+Generated by generate-parser.sh
+"""
+
+import argparse
+import sys
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='$DESCRIPTION',
+        formatter_class=argparse.RawDescriptionHelpFormatter
+    )
+
+    parser.add_argument(
+        '--version',
+        action='version',
+        version='1.0.0'
+    )
+
+    parser.add_argument(
+        '--verbose', '-v',
+        action='store_true',
+        help='Enable verbose output'
+    )
+
+EOF
+
+    if [ "$GROUPS" = true ]; then
+        cat <<EOF
+    # Configuration group
+    config_group = parser.add_argument_group(
+        'configuration',
+        'Configuration options'
+    )
+
+    config_group.add_argument(
+        '--config',
+        help='Configuration file'
+    )
+
+EOF
+    fi
+
+    if [ "$SUBCOMMANDS" = true ]; then
+        cat <<EOF
+    # Create subparsers
+    subparsers = parser.add_subparsers(
+        dest='command',
+        help='Available commands',
+        required=True
+    )
+
+    # Example subcommand
+    cmd_parser = subparsers.add_parser(
+        'run',
+        help='Run the application'
+    )
+
+    cmd_parser.add_argument(
+        'target',
+        help='Target to run'
+    )
+
+EOF
+
+        if [ "$CHOICES" = true ]; then
+            cat <<EOF
+    cmd_parser.add_argument(
+        '--env',
+        choices=['development', 'staging', 'production'],
+        default='development',
+        help='Environment (default: %(default)s)'
+    )
+
+EOF
+        fi
+    else
+        cat <<EOF
+    # Arguments
+    parser.add_argument(
+        'target',
+        help='Target to process'
+    )
+
+EOF
+
+        if [ "$CHOICES" = true ]; then
+            cat <<EOF
+    parser.add_argument(
+        '--env',
+        choices=['development', 'staging', 'production'],
+        default='development',
+        help='Environment (default: %(default)s)'
+    )
+
+EOF
+        fi
+    fi
+
+    cat <<EOF
+    # Parse arguments
+    args = parser.parse_args()
+
+    # Display configuration
+    if args.verbose:
+        print("Verbose mode enabled")
+        print(f"Arguments: {args}")
+
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())
+EOF
+}
+
+# Output
+if [ -n "$OUTPUT" ]; then
+    generate_parser > "$OUTPUT"
+    chmod +x "$OUTPUT"
+    echo "Generated parser: $OUTPUT"
+else
+    generate_parser
+fi