#!/bin/sh
# returns 0 on successful build or nothing to build
# non-zero exit status only on error during building
set -e  # stop immediately on error

# [0-9]*.cc -> subx.cc -> subx_bin
# (layers)   |          |
#          tangle      $CXX

# can also be called with a layer to only build until
#   $ ./build --until 050
UNTIL_LAYER=${2:-zzz}

# we use two mechanisms to speed up rebuilds:
# - older_than: run a command if the output is older than any of the inputs
# - update: if a command is quick to run, always run it but update the result only on any change
#
# avoid combining both mechanisms to generate a single file
# otherwise you'll see spurious messages about files being updated
# risk: a file may unnecessarily update without changes, causing unnecessary work downstream

test "$CXX" || export CXX=c++
test "$CC" || export CC=cc
test "$CFLAGS" || export CFLAGS="-g -O3 -std=c++98"  # CI has an ancient version; don't expect recent dialects
export CFLAGS="$CFLAGS -Wall -Wextra -fno-strict-aliasing"

# return 1 if $1 is older than _any_ of the remaining args
older_than() {
  local target=$1
  shift
  if [ ! -e $target ]
  then
#?     echo "$target doesn't exist"
    echo "updating $target" >&2
    return 0  # success
  fi
  local f
  for f in $*
  do
    if [ $f -nt $target ]
    then
      echo "updating $target" >&2
      return 0  # success
    fi
  done
  return 1  # failure
}

# redirect to $1, unless it's already identical
update() {
  if [ ! -e $1 ]
  then
    cat > $1
  else
    cat > $1.tmp
    diff -q $1 $1.tmp >/dev/null  &&  rm $1.tmp  ||  mv $1.tmp $1
  fi
}

update_cp() {
  if [ ! -e $2/$1 ]
  then
    cp $1 $2
  elif [ $1 -nt $2/$1 ]
  then
    cp $1 $2
  fi
}

noisy_cd() {
  cd $1
  echo "-- `pwd`" >&2
}

older_than enumerate/enumerate enumerate/enumerate.cc && {
  $CXX $CFLAGS enumerate/enumerate.cc -o enumerate/enumerate
}

older_than tangle/tangle tangle/*.cc && {
  noisy_cd tangle
    {
      grep -h "^struct .* {" [0-9]*.cc  |sed 's/\(struct *[^ ]*\).*/\1;/'
      grep -h "^typedef " [0-9]*.cc
    }  |update type_list
    grep -h "^[^ #].*) {" [0-9]*.cc  |sed 's/ {.*/;/'  |update function_list
    ls [0-9]*.cc  |grep -v "\.test\.cc$"  |sed 's/.*/#include "&"/'  |update file_list
    ls [0-9]*.test.cc  |sed 's/.*/#include "&"/'  |update test_file_list
    grep -h "^[[:space:]]*void test_" [0-9]*.cc  |sed 's/^\s*void \(.*\)() {$/\1,/'  |update test_list
    grep -h "^\s*void test_" [0-9]*.cc  |sed 's/^\s*void \(.*\)() {.*/"\1",/'  |update test_name_list
    $CXX $CFLAGS boot.cc -o tangle
package commands

import (
	"os/exec"
	"time"

	"git.sr.ht/~sircmpwn/aerc/widgets"

	"github.com/gdamore/tcell"
	"github.com/riywo/loginshell"
)

type Term struct{}

func init() {
	register(Term{})
}

func (Term) Aliases() []string {
	return []string{"terminal", "term"}
}

func (Term) Complete(aerc *widgets.Aerc, args []string) []string {
	return nil
}

// The help command is an alias for `term man` thus Term requires a simple func
func TermCore(aerc *widgets.Aerc, args []string) error {
	if len(args) == 1 {
		shell, err := loginshell.Shell()
		if err != nil {
			return err
		}
		args = append(args, shell)
	}
	term, err := widgets.NewTerminal(exec.Command(args[1], args[2:]...))
	if err != nil {
		return err
	}
	tab := aerc.NewTab(term, args[1])
	term.OnTitle = func(title string) {
		if title == "" {
			title = args[1]
		}
		tab.Name = title
		tab.Content.Invalidate()
	}
	term.OnClose = func(err error) {
		aerc.RemoveTab(term)
		if err != nil {
			aerc.PushStatus(" "+err.Error(), 10*time.Second).
				Color(tcell.ColorDefault, tcell.ColorRed)
		}
	}
	return nil
}

func (Term) Execute(aerc *widgets.Aerc, args []string) error {
	return TermCore(aerc, args)
}




 
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