Replace build-dir.py with zcurses build-dir

build/build-dir.zsh

@@ -0,0 +1,14 @@
+#!/usr/bin/env zsh
+
+# TODO: Find inspiration from zsh-select's use of the zcurses module.
+# https://github.com/psprint/zsh-select/blob/master/zsh-select
+
+build-dir() {
+  zmodload zsh/curses && {
+    zcurses init
+  } always {
+    zcurses end
+  }
+}
+
+build-dir

build/build.plugin.zsh

@@ -17,140 +17,46 @@ elif [ `uname` = Darwin ]; then
     alias debug='lldb --'
 fi
 
+# Store the path to `build-dir.py`, using `${0:a:h}` does not work in a
+# function because it will result in `pwd` not this scripts directory.
+_build_dir_py=${0:a:h}/build-dir.py
+
 # Interactively choose a `~build` directory for `build` to build.
+# TODO: Support arguments:
+# * [ ] [-h,--help] - show this help message and exit
+# * [x] [--build] - execute the build commend
+# * [ ] <dir> - start in another directory, not `pwd`
 build-dir() {
-  local usage='usage: build-dir [-h] [--build] [<directory>]'
-  local -a help do_build
-  zparseopts -D h=help -help=help -build=do_build
-  if [[ -n $help ]]; then
-    cat << EOF
-$usage
-
-Find and select the current build directory interactively.
-
-positional arguments:
-  <directory> the build directory to select
-
-optional arguments:
-  -h, --help  show this help message and exit
-  --build     invoke a build after selection
-EOF
-    exit
+  # Get a unique filename to store the chosen build directory in.
+  [ `uname` = Darwin ] && local file=`mktemp` || local file=`tempfile`
+  # Prompt user to choose a build directory.
+  python $_build_dir_py $file;
+  local error=$?
+  # If the file exists, read the build directory from it, then delete it.
+  [ -f $file ] && local build_dir=$PWD/`cat $file`; rm $file
+  # If choosing a build directory failed, return that error.
+  [[ "$error" = "0" ]] || return $error
+  # If `build.ninja` exists in alias `ninja`, return.
+  [ -f $build_dir/build.ninja ] && \
+    local build="ninja -C $build_dir"
+  # If `Makefile` exists in alias `make`, return.
+  if [ -f $build_dir/Makefile ]; then
+    [ `uname` = Darwin ] && \
+      local cpu_count=`sysctl -n hw.ncpu` ||
+      local cpu_count=`grep -c '^processor' /proc/cpuinfo`
+    local build="make -j $cpu_count -C $build_dir"
   fi
-  error() { echo "\e[31merror:\e[0m $1"; exit 1 }
-  local build_dir
-  if [[ ${#*} -gt 1 ]]; then
-    echo $usage
-    error "unexpected position arguments: ${*[2,${#*}]}"
-  elif [[ ${#*} -eq 1 ]]; then
-    build_dir=${*[1]}
-    [[ ! -d $build_dir ]] && \
-      error "directory not found: $build_dir"
-  fi
-
-  # If <directory> was not set begin selection
-  if [[ -z $build_dir ]]; then
-    # Find build directories
-    local -a build_dirs
-    for entry in `ls -A`; do
-      [ -d $entry ] && [[ $entry =~ build* ]] && \
-        build_dirs+=$entry
-    done
-
-    # Interactively select a build directory if more than 1 found
-    integer index=0
-    if [[ ${#build_dirs} -eq 0 ]]; then
-      error "no build directories found"
-    elif [[ ${#build_dirs} -gt 1 ]]; then
-      zmodload zsh/curses && {
-        # Get the size of the terminal
-        local size=`stty size`
-        integer height=${size% *}
-        integer width=${size#* }
-
-        # Create the window and hide the cursor
-        zcurses init
-        zcurses addwin build-dir $height $width 0 0
-
-        # Hide the cursor for zcurses, trap SIGINT to ensure cleanup in
-        # always-list occurs below
-        tput civis; trap 'exit 130' INT
-
-        # Enter display loop
-        local key keypad
-        while (( 1 )); do
-          zcurses clear build-dir
-
-          # Add the prompt text
-          zcurses move build-dir 1 1
-          zcurses string build-dir 'Select a build directory:'
-
-          # Add the selections text
-          for (( i = 0; i < ${#build_dirs}; i++ )); do
-            integer line=$i+3
-            zcurses move build-dir $line 1
-            [[ $index -eq $i ]] &&
-              zcurses string build-dir "* " ||
-              zcurses string build-dir "  "
-            zcurses string build-dir ${build_dirs[$i+1]}
-          done
-
-          # Display the text the and wait for input
-          zcurses refresh build-dir
-          zcurses input build-dir key keypad
-
-          # Handle user input
-          case $key in
-            (UP|k|$'\C-P')
-              [[ $index -gt 0 ]] && index=$index-1 ;;
-            (DOWN|j|$'\C-N')
-              [[ $index -lt ${#build_dirs}-1 ]] && index=$index+1 ;;
-            (ENTER|$'\n')
-              break ;;
-          esac
-        done
-      } always {
-        # Restore the cursor and cleanup zcurses
-        tput cvvis; tput cnorm
-        zcurses delwin build-dir
-        zcurses end
-      }
-    fi
-  fi
-
-  # On success setup the build directory for use
-  if [[ $? -eq 0 ]]; then
-    # Set the build directory from selection if empty
-    [[ -z $build_dir ]] && \
-      build_dir=${build_dirs[$index+1]}
-
-    # If `build.ninja` exists in alias `ninja`, return.
-    local build
-    [ -f $build_dir/build.ninja ] && \
-      build="ninja -C $build_dir"
-
-    # If `Makefile` exists in alias `make`, return.
-    if [ -f $build_dir/Makefile ]; then
-      [ `uname` = Darwin ] && \
-        local cpu_count=`sysctl -n hw.ncpu` ||
-        local cpu_count=`grep -c '^processor' /proc/cpuinfo`
-      build="make -j $cpu_count -C $build_dir"
-    fi
-
-    # If the build variable is not defined the command could not be determined
-    if [ -n $build ]; then
-      echo "\e[33mwarning:\e[0m build command detection failed: $build_dir"
-      # Prompt user to enter a build command
-      vared -p 'enter comand: ' build
-    fi
-
-    # Redefine the `build` alias and update the `~build` hash directory
-    alias build="$build"
-    hash -d build=$build_dir
-
-    # If `--build` is specified then evaluate the command.
-    [[ -n $do_build ]] && eval build
+  # If the build variable is not defined the command could not be determined.
+  if [ -z $build ]; then
+    # TODO: Prompt user to choose a build command?
+    echo "could not determine build command"
+    return 1
   fi
+  # Redefine the `build` alias and update the `~build` hash directory.
+  alias build="$build"
+  hash -d build=$build_dir
+  # If `--build` is specified then evaluate the command.
+  [[ "$1" = "--build" ]] && eval $build || true
 }
 
 # Build then run a target residing in `~build/bin`.