@import url("/assets/md.css")feat: small shell util

@import url("/assets/md.css")

1 files changed, 61 insertions, 0 deletions

diff --git a/utils/session-type.zsh b/utils/session-type.zsh
new file mode 100644
index 0000000..074cd54
--- /dev/null
+++ b/utils/session-type.zsh
@@ -0,0 +1,61 @@
+#
+# A function for detecting information about the current session, entirely using shell builtins and env variables.
+# 
+# This file is part of the zuwu project - a general-purpose zsh initialization and utility framework.
+# It is not used by zuwu at the moment, but rather is provided to shell script developers as a utility function they can integrate into their own codebases
+#
+# Authors:
+#   memdmp <https://mem.estrogen.zone/>
+#
+
+function {
+  local session_extensions=()
+  local session_base="local"
+
+  # Detect Interactivity & Login State
+  local is_interactive=false;
+  local is_login=false;
+  if [[ $- == *i* ]]; then
+    is_interactive=true
+  fi
+  if [[ $- == *l* ]]; then
+    is_login=true
+  fi
+  if [[ "$is_interactive" && "$is_login" ]]; then
+    session_extensions+=(
+      interactive
+      login
+    )
+  elif [[ "$is_interactive" ]]; then
+    session_extensions+=(interactive)
+  elif [[ "$is_login" ]]; then
+    session_extensions+=(login)
+  else
+    session_extensions+=(headless)
+  fi
+
+  # Detect if local or remote, and the kind
+  if [ -n "$SSH_TTY" ]; then
+    session_base=remote
+    session_extensions+=(
+      ssh
+      ssh_tty
+    )
+  elif [ -n "$SSH_CLIENT" ]; then
+    session_base=remote
+    session_extensions+=(
+      ssh
+    )
+  else
+    # Expensive ssh session detection - spawns a `ps` process. You may want this if you need reliable session type detection
+    # case $(ps -o comm= -p "$PPID") in
+    #   sshd|*/sshd) session_base=remote; session_extensions+=(ssh);;
+    # esac
+  fi
+
+  # Join together into a final, content-type-alike variable
+  SESSION_TYPE="$session_base/${(j.+.)session_extensions}"
+}
+
+# Example use:
+# [[ "$SESSION_TYPE+" == *(+|/)interactive+* ]] && echo "Is in interactive session"