# Bash initialization.
#
# $Revision: 45a6d8582b36 $ $Date: Thu, 14 Mar 2024 21:47:43 -0400 $
# $Source: /doc/html/htdocs/dotfiles/top/dot-bashrc $
# $Host: hairball.my.domain $
# $UUID: a1e6f501-565c-570c-8852-13c33d5dc3c4 $
#
# Default file protection and shell/environment variables.
 
umask 22
history=2000
savehist=2000
noclobber=yes
notify=yes
ignoreeof=2

# CSH junkies
alias unsetenv=unset
setenv () {
    export $1="$2"
}

test -x $HOME/bin/buildenv    && $HOME/bin/buildenv
test -f $HOME/.envrc.sh       && source $HOME/.envrc.sh
test -f $HOME/.bash_dircolors && source $HOME/.bash_dircolors
test -f $HOME/.current        && source $HOME/.current
test -f $HOME/.path           && setenv $(head -1 ~/.path)

# Disable some commands that are also programs on our system.

enable -n help typeset

# Set auto_resume if you want to resume on "emacs", as well as on
# "%emacs".

auto_resume=

# Make it so that failed 'exec' commands don't flush this shell.

no_exit_on_failed_exec=

# Set some frequently-accessed directories.

b=/doc/html/htdocs/blog/posts
h=/doc/html/htdocs
l=/usr/local/lib

# Set your aliases.

if test -f $HOME/.bashalias; then
    source $HOME/.bashalias
else
    echo "$HOME/.bashalias not found, check your aliases."
fi

# Sets up your prompt to include your current working directory.
# Also sets any aliases needed to alter the prompt when your current
# working directory changes.
 
tty=$(tty)

case "$?" in
    0)  TTY="$(echo $tty | cut -c6-)"
        PS1="\n(\d \t) [\w]\n\u at \h.$TTY ($SHLVL-\!)\$ "
        PS2="> "
        ;;
    *)  ;;        # no terminal
esac

# https://jichu4n.com/posts/debug-trap-and-prompt_command-in-bash/
# Combining the DEBUG trap and PROMPT_COMMAND
# Chuan Ji
# June 8, 2014
# Keep a log of commands run.

# This will run before any command is executed.
function PreCommand() {
  if [ -z "$AT_PROMPT" ]; then
    return
  fi
  unset AT_PROMPT

  # Do stuff.
  # echo "PreCommand"
}
trap "PreCommand" DEBUG

# This will run after the execution of the previous full command line.
# We don't want PostCommand to execute when first starting a bash
# session (i.e., at the first prompt).
FIRST_PROMPT=1
function PostCommand() {
  local rc=$?
  AT_PROMPT=1

  if [ -n "$FIRST_PROMPT" ]; then
    unset FIRST_PROMPT
    $HOME/libexec/bashlog $$: START
    return
  fi

  # Do stuff.
  local _x
  _x=$(fc -ln 0 | tr -d '\011')
  local _d="$(/bin/pwd)"
  $HOME/libexec/bashlog $$: $rc: $_d:$_x
}
PROMPT_COMMAND="PostCommand"

# -------------------------------------------------------------------
# Shell functions and associated aliases.  Most of these functions
# take the place of aliases that required arguments.

up () {
    cd ../$*
}

upp () {
    cd ../../$*
}

# "repeat" command; unlike zsh, cannot pass command in as an argument
# or you get errors like this:
#      repeat 2 perl -we'print "Hello\n"'
#      Use of uninitialized value $_ in print at -e line 1.
repeat () {
    read -erp "$PS2" func
    local integer i=0
    while ((i++ < ${1:-1}))
    do
        eval "$func"
    done
}

# if you don't have GNU utilities.
## seq () { 
##     local lower upper output;
##     lower=$1 upper=$2;
##     while [ $lower -le $upper ];
##     do
##         output="$output $lower";
##         lower=$[ $lower + 1 ];
##     done;
##     echo $output
## }

# track directories used, and flip to common ones quickly.
cd () {
    builtin cd "$@"
    /bin/pwd >> ~/.bashdir.new
}

## g () {
##     cat $HOME/.bashdir
##     local prompt="dir: "
##     local ans=$(grabchars -d0 -L -c '[0-9a-zA-Z]' -q"$prompt")
##     set X $(grep "^$ans" $HOME/.bashdir)
##     case "$#" in
##         (3) builtin cd $3 && pwd ;;
##         (*) echo no such entry ;;
##     esac
## }

# toggle history files used -- this is run once to
# set it to the default.
_hstate='saved'

thist () {
    local _hdefault="$HOME/.bash_history"
    local _hsaved="$HOME/.bash_saved"

    case "$_hstate" in
        default)
            _hstate='saved'
            history -c; history -r $_hsaved; HISTIGNORE=":*"
            ;;

        *)
            _hstate='default'
            history -c; history -r $_hdefault; HISTIGNORE=""
            ;;
    esac
    echo "History: switching to $_hstate"
}

thist

# Keep the last command including any quotes.
hkeep () {
    local _hsaved="$HOME/.bash_saved"
    history -p '!!' >> $_hsaved
}