plugins/git-flow/hooks/branch-check.sh

@@ -0,0 +1,102 @@
+#!/bin/bash
+# git-flow branch name validation hook
+# Validates branch names follow the convention: <type>/<description>
+# Command hook - guaranteed predictable behavior
+
+# Read tool input from stdin (JSON format)
+INPUT=$(cat)
+
+# Extract command from JSON input
+# The Bash tool sends {"command": "..."} format
+COMMAND=$(echo "$INPUT" | grep -o '"command"[[:space:]]*:[[:space:]]*"[^"]*"' | head -1 | sed 's/.*"command"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/')
+
+# If no command found, exit silently (allow)
+if [ -z "$COMMAND" ]; then
+    exit 0
+fi
+
+# Check if this is a branch creation command
+# Patterns: git checkout -b, git branch (without -d/-D), git switch -c/-C
+IS_BRANCH_CREATE=false
+BRANCH_NAME=""
+
+# git checkout -b <branch>
+if echo "$COMMAND" | grep -qE 'git\s+checkout\s+(-b|--branch)\s+'; then
+    IS_BRANCH_CREATE=true
+    BRANCH_NAME=$(echo "$COMMAND" | sed -n 's/.*git\s\+checkout\s\+\(-b\|--branch\)\s\+\([^ ]*\).*/\2/p')
+fi
+
+# git switch -c/-C <branch>
+if echo "$COMMAND" | grep -qE 'git\s+switch\s+(-c|-C|--create|--force-create)\s+'; then
+    IS_BRANCH_CREATE=true
+    BRANCH_NAME=$(echo "$COMMAND" | sed -n 's/.*git\s\+switch\s\+\(-c\|-C\|--create\|--force-create\)\s\+\([^ ]*\).*/\2/p')
+fi
+
+# git branch <name> (without -d/-D/-m/-M which are delete/rename)
+if echo "$COMMAND" | grep -qE 'git\s+branch\s+[^-]' && ! echo "$COMMAND" | grep -qE 'git\s+branch\s+(-d|-D|-m|-M|--delete|--move|--list|--show-current)'; then
+    IS_BRANCH_CREATE=true
+    BRANCH_NAME=$(echo "$COMMAND" | sed -n 's/.*git\s\+branch\s\+\([^ -][^ ]*\).*/\1/p')
+fi
+
+# If not a branch creation command, exit silently (allow)
+if [ "$IS_BRANCH_CREATE" = false ]; then
+    exit 0
+fi
+
+# If we couldn't extract the branch name, exit silently (allow)
+if [ -z "$BRANCH_NAME" ]; then
+    exit 0
+fi
+
+# Remove any quotes from branch name
+BRANCH_NAME=$(echo "$BRANCH_NAME" | tr -d '"' | tr -d "'")
+
+# Skip validation for special branches
+case "$BRANCH_NAME" in
+    main|master|develop|development|staging|release|hotfix)
+        exit 0
+        ;;
+esac
+
+# Allowed branch types
+VALID_TYPES="feat|fix|chore|docs|refactor|test|perf|debug"
+
+# Validate branch name format: <type>/<description>
+# Description: lowercase letters, numbers, hyphens only, max 50 chars total
+if ! echo "$BRANCH_NAME" | grep -qE "^($VALID_TYPES)/[a-z0-9][a-z0-9-]*$"; then
+    echo ""
+    echo "[git-flow] Branch name validation failed"
+    echo ""
+    echo "Branch: $BRANCH_NAME"
+    echo ""
+    echo "Expected format: <type>/<description>"
+    echo ""
+    echo "Valid types: feat, fix, chore, docs, refactor, test, perf, debug"
+    echo ""
+    echo "Description rules:"
+    echo "  - Lowercase letters, numbers, and hyphens only"
+    echo "  - Must start with letter or number"
+    echo "  - No spaces or special characters"
+    echo ""
+    echo "Examples:"
+    echo "  feat/add-user-auth"
+    echo "  fix/login-timeout"
+    echo "  chore/update-deps"
+    echo "  docs/api-reference"
+    echo ""
+    exit 1
+fi
+
+# Check total length (max 50 chars)
+if [ ${#BRANCH_NAME} -gt 50 ]; then
+    echo ""
+    echo "[git-flow] Branch name too long"
+    echo ""
+    echo "Branch: $BRANCH_NAME (${#BRANCH_NAME} chars)"
+    echo "Maximum: 50 characters"
+    echo ""
+    exit 1
+fi
+
+# Valid branch name
+exit 0

plugins/git-flow/hooks/commit-msg-check.sh

@@ -0,0 +1,74 @@
+#!/bin/bash
+# git-flow commit message validation hook
+# Validates git commit messages follow conventional commit format
+# PreToolUse hook for Bash commands - type: command
+
+# Read tool input from stdin
+INPUT=$(cat)
+
+# Use Python to properly parse JSON and extract the command
+COMMAND=$(echo "$INPUT" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d.get('command',''))" 2>/dev/null)
+
+# If no command or python failed, allow through
+if [ -z "$COMMAND" ]; then
+    exit 0
+fi
+
+# Check if it is a git commit command with -m flag
+if ! echo "$COMMAND" | grep -qE 'git\s+commit.*-m'; then
+    # Not a git commit with -m, allow through
+    exit 0
+fi
+
+# Extract commit message - handle various quoting styles
+# Try double quotes first
+COMMIT_MSG=$(echo "$COMMAND" | sed -n 's/.*-m[[:space:]]*"\([^"]*\)".*/\1/p')
+# If empty, try single quotes
+if [ -z "$COMMIT_MSG" ]; then
+    COMMIT_MSG=$(echo "$COMMAND" | sed -n "s/.*-m[[:space:]]*'\\([^']*\\)'.*/\\1/p")
+fi
+# If still empty, try HEREDOC pattern
+if [ -z "$COMMIT_MSG" ]; then
+    if echo "$COMMAND" | grep -qE -- '-m[[:space:]]+"\$\(cat <<'; then
+        # HEREDOC pattern - too complex to parse, allow through
+        exit 0
+    fi
+fi
+
+# If no message extracted, allow through
+if [ -z "$COMMIT_MSG" ]; then
+    exit 0
+fi
+
+# Validate conventional commit format
+# Format: <type>(<scope>): <description>
+# or: <type>: <description>
+# Valid types: feat, fix, docs, style, refactor, perf, test, chore, build, ci
+
+VALID_TYPES="feat|fix|docs|style|refactor|perf|test|chore|build|ci"
+
+# Check if message matches conventional commit format
+if echo "$COMMIT_MSG" | grep -qE "^($VALID_TYPES)(\([a-zA-Z0-9_-]+\))?:[[:space:]]+.+"; then
+    # Valid format
+    exit 0
+fi
+
+# Invalid format - output warning
+echo "[git-flow] WARNING: Commit message does not follow conventional commit format"
+echo ""
+echo "Expected format: <type>(<scope>): <description>"
+echo "  or: <type>: <description>"
+echo ""
+echo "Valid types: feat, fix, docs, style, refactor, perf, test, chore, build, ci"
+echo ""
+echo "Examples:"
+echo "  feat(auth): add password reset functionality"
+echo "  fix: resolve login timeout issue"
+echo "  docs(readme): update installation instructions"
+echo ""
+echo "Your message: $COMMIT_MSG"
+echo ""
+echo "To proceed anyway, use /commit command which auto-generates valid messages."
+
+# Exit with non-zero to block
+exit 1

plugins/git-flow/hooks/hooks.json

@@ -0,0 +1,19 @@
+{
+  "hooks": {
+    "PreToolUse": [
+      {
+        "matcher": "Bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/branch-check.sh"
+          },
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/hooks/commit-msg-check.sh"
+          }
+        ]
+      }
+    ]
+  }
+}