gistfile1.sh

#!/bin/bash

find_project_or_workspace() {
  MASK=$1
  ALL_PROJECTS_OR_WORKSPACES=`/bin/ls -1 -d $MASK 2>/dev/null`
  FILE_TO_OPEN=''

  if [ z"${ALL_PROJECTS_OR_WORKSPACES}" != z ] ; then
    for i in ${ALL_PROJECTS_OR_WORKSPACES} ; do
      if [ z"${PROJECT}" == z ] ; then
        PROJECT_OR_WORKSPACE=${i}
      else
        break
      fi
    done

    if [ z"${PROJECT_OR_WORKSPACE}" != z ] ; then
      FILE_TO_OPEN=`basename "${PROJECT_OR_WORKSPACE}"`
    fi
  fi
  
  echo $FILE_TO_OPEN
}

find_project() {
  echo $(find_project_or_workspace '*.xcodeproj')
}

find_workspace() {
  echo $(find_project_or_workspace '*.xcworkspace')  
}

THING_TO_OPEN=$(find_workspace)
if [ z"${THING_TO_OPEN}" == z ]; then
  THING_TO_OPEN=$(find_project)
fi

if [ z"${THING_TO_OPEN}" == z ]; then
  echo "Can't find single workspace or project file in current directory, exiting..."
  exit 1
fi

open "${THING_TO_OPEN}"