add cmd to set up git hook

Author: gggeek

NEWS.md

@@ -159,6 +159,8 @@
 
 * improved: added an example Symfony Client and Server to the demo files (using Symfony 6 / PHP 8 syntax)
 
+* improved: added to the `taskfile` command an option to automatically set up the git hooks for development
+
 * improved: made sure the test container and gha test runners have at least one locale with comma as decimal separator
 
 * BC notes:

taskfile

@@ -4,6 +4,7 @@ set -e
 
 # @todo test all commands on mac, windows-wsl. If there are issues, rewrite this in (plain, no dependencies) php or make it a polyglot?
 
+# download the demo files and unzip them in the 'demo' folder
 function download_demos() {
     # @todo check for presence of curl, tar, grep, sed and tr first
     # NB: we always get the demos matching the current version, not the last one available
@@ -14,12 +15,14 @@ function download_demos() {
     rm demofiles.tgz
 }
 
+# remove the 'demo' folder
 function remove_demos() {
     ROOT_DIR="$(pwd)"
     if [ -d "${ROOT_DIR}/demo" ]; then rm -rf "${ROOT_DIR}/demo"; fi
 }
 
 # @todo can we find a better name than this?
+# download and install the visual-editing component into the debugger
 function setup_debugger_visualeditor() {
     ROOT_DIR="$(pwd)"
     cd "${TMPDIR-/tmp}"
@@ -38,11 +41,13 @@ function setup_debugger_visualeditor() {
     rm -rf jsxmlrpc*
 }
 
+# remove the visual-editing component from the debugger
 function remove_debugger_visualeditor() {
     ROOT_DIR="$(pwd)"
     if [ -d "${ROOT_DIR}/debugger/jsxmlrpc" ]; then rm -rf "${ROOT_DIR}/debugger/jsxmlrpc"; fi
 }
 
+# arg: $TAG. Replaces the lib version tag in all files (soutrce and docs) known to use it
 function tag_code() {
     TAG="$1"
     if [ -z "${TAG}" ]; then
@@ -56,10 +61,39 @@ function tag_code() {
     sed -i -e "1s|.*|## XML-RPC for PHP version $TAG - $DATE|" NEWS.md
 }
 
+# install the git hooks useful for development of this library
+function setup_git_hooks() {
+    if [ -f "$(pwd)/.git/hooks/pre-push" ]; then
+        echo "ERROR: git pre-push hook already exists. Please check and remove file $(pwd)/.git/hooks/pre-push" >&2
+        exit 1
+    else
+        ln -s "$(pwd)/.githooks/pre-push.sh" "$(pwd)/.git/hooks/pre-push"
+    fi
+}
+
+# prints this help text
 function help() {
+    # @todo allow a tag such as `# @internal` to denote functions as not available for external execution
+    declare -A DESCRIPTIONS
+    local CMD MAX LEN
     echo "$0 <task> <args>"
     echo "Tasks:"
-    compgen -A function | cat -n
+    MAX=-1
+    for CMD in $(compgen -A function); do
+        LEN=${#CMD}
+        ((LEN > MAX)) && MAX=$LEN
+        DESCRIPTIONS[$CMD]=$(grep "function $CMD(" -B 1 "${BASH_SOURCE[0]}" | grep '^#' | grep -v '@todo' | sed 's/^# *//')
+    done
+    MAX=$((MAX + 4))
+    for CMD in $(compgen -A function); do
+        if [ -z "${DESCRIPTIONS[$CMD]}" ]; then
+            echo "    ${CMD}"
+        else
+            printf "%-${MAX}s %s\n" "    ${CMD}" "${DESCRIPTIONS[$CMD]}"
+            #echo "    ${CMD}: ${DESCRIPTIONS[$CMD]}"
+        fi
+
+    done
 }
 
 if [ $# -eq 0 ]; then