backtrace and raise_error

install.sh

@@ -6,6 +6,33 @@ BASEDIR=$(dirname $0)
 
 ## FUNCTIONS
 
+function exit {
+  on_exit $1 true
+}
+
+function on_exit {
+  local error_code bypass_last_call stack_lines
+  error_code=$1
+
+  bypass_last_call=${2:-false}
+  stack_lines=("${BASH_LINENO[@]}")
+  $bypass_last_call && stack_lines=("${stack_lines[@]:1}")
+
+  # remove 1 on head list
+  [[ ${#stack_lines[@]} > 0 && ${stack_lines[0]} == 1 ]] && unset stack_lines[0]
+
+  # remove 0 on tail list
+  [[ ${#stack_lines[@]} > 0 && ${stack_lines[-1]} == 0 ]] && unset stack_lines[-1]
+
+  if [[ $error_code > 0 ]]; then
+    printf "\nEXIT #${error_code} due to error at line ${stack_lines[*]} : \n-----------------------------------------\n"
+    trap - ERR TERM INT EXIT
+    builtin exit "${error_code}"
+  else
+    echo SUCCESS
+  fi
+}
+
 function assert_debian13 {
   test -f /etc/debian_version &&
     grep --quiet ^13\. /etc/debian_version ||
@@ -18,7 +45,6 @@ function assert_gnome_desktop {
 }
 
 function install_ghostty {
-
   if ! command -v ghostty >/dev/null; then
     curl -sS https://debian.griffo.io/EA0F721D231FDD3A0A17B9AC7808B4DD62C41256.asc |
       sudo gpg --dearmor --yes -o /etc/apt/trusted.gpg.d/debian.griffo.io.gpg
@@ -40,7 +66,12 @@ function install_ghostty {
 }
 
 function install_homebrew {
-
+  # $nope
+  # exit 11
+  # echo AAA
+  raise_error 'BBB'
+  false
+  echo BBB
   bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
 }
 
@@ -48,7 +79,12 @@ function raise_error {
   message=${1:-an undefined error has occured!}
   code=${2:-1}
   echo "error ${code}: ${message}" >&2
-  exit "${code}"
+  echo "FUNCNAME:    ${FUNCNAME[@]}" >&2 # inner outer main
+  echo "BASH_SOURCE: ${BASH_SOURCE[@]}" script.sh script.sh script.sh >&2
+  echo "BASH_LINENO: ${BASH_LINENO[@]}" 52 55 0 >&2
+  trap - ERR TERM INT EXIT
+  # builtin exit "${code}"
+  on_exit $code true
 }
 
 function set_alternative {
@@ -73,7 +109,7 @@ function set_alternative {
 }
 
 function configure_default {
-  # CAPS LOCK means ESC()
+  # CAPS LOCK means ESC
   gsettings set org.gnome.desktop.input-sources xkb-options "['caps:escape']"
 
   set_alternative editor nvim
@@ -103,24 +139,23 @@ function install_neovim {
   local shellrc alias_expr
   shellrc="$HOME/.bashrc"
   if ! grep -q nvim-vanilla "$shellrc"; then
-    alias_expr="alias nvim-vanilla='NVIM_APPNAME=nvim-vanilla nvim'"
-    echo "$alias_expr" >>"$shellrc"
-    eval "$alias_expr"
+    echo "alias nvim-vanilla='NVIM_APPNAME=nvim-vanilla nvim'" >>"$shellrc"
     echo 'nvim-vanilla created!'
+    RELOAD_SHELL=true
   else
     echo 'nvim-vanilla ready!'
   fi
+  exit 3
 }
+
 ## MAIN
-set -Eue
+
+set -TEue
+trap 'on_exit $?' ERR TERM INT EXIT
 
 assert_debian13
 assert_gnome_desktop
-
-echo "MIAOU-DESKTOP installation..."
-
 install_ghostty
-# install_homebrew
-install_neovim
+install_homebrew
+# install_neovim
 configure_default
-echo SUCCESS