#!/bin/sh
#
# Objective:
#      UPDATE_DEPOT will update the depot by adding, deleting, or editing files
#      in the depot to match the client workspace.
#
# Parameters:
#      -r will cause the update to update all sub directories as well. 
#      $1 is the P4 workspace location from the client perspective.
#      $2 if given, is the client spec.
#
# Assumptions:
#      The file creation and modification takes place in the P4 workspace prior
#      to expruting this command.

prog=`basename $0`

usage()
{
   echo
   echo "usage: $prog [-r|-h] <perforce workspace> [client spec]"
   echo 
   echo "-h : print this message."
   echo "-r : recursively update files in all subdirectories."
   echo "<perforce workspace> : the file location on the client."
   echo "[client spec] : the client to use for update."
   exit
}


echo "Executing $0 "$@""


if [ "$DEBUG" = "0" ]
then
   set -vx
fi

if [ ! -d "$LOG_DIR" ]
then
    LOG_DIR="."
fi

if [ $# -lt 1 -o $# -gt 3 ]
then
   usage
fi

if [ "$1" = "-h" ]
then
    echo
    echo $prog will update the depot to match the client workspace.
    usage
fi

p4_option="-x -"
p4_client=""
if [ $1 = "-c" ]
then
   shift
   p4_client="-c $1"
   p4_option="$p4_client $p4_option"
   shift
fi

descend=true
wspace=`echo $1 | sed 's/\\\/\//g'`
trail=$wspace
add_trail=`echo $wspace | sed 's/\.\.\.$//'`


if [ ! -f "$add_trail" -a ! -d "$add_trail" ]
then
   echo "$prog, Error: Workspace must be a file or directory on the client"
   exit 1
fi

# if it is a file then do not recurse directories
# else assume that it ends in ... for recurse option.
if [ "$add_trail" = "$trail" ]
then
    descend=false

    if [ -d "$add_trail" ]
    then
        tmp_trail=`echo $add_trail | grep /$` || tmp_trail="$add_trail/"
        add_trail=$tmp_trail
        trail=${add_trail}*
    fi

fi



p4 -s $p4_client flush $trail > /dev/null
stat=$?

if [ $stat -ne 0 ]
then
   echo "$prog, Error: command p4 $p4_client flush $trail failed"
   exit 1
fi


echo "Looking for new files"

# add all new files
# ignore "can't add existing file message" if I eliminate it with grep
# then grep returns an exit code of 1"

ignore='t add existing file| not in client view.'

errmsg="$prog, Error: Failed trying to add new files."
if [ "$descend" = "true" ]
then
     find $add_trail -type f -print | \
      p4 -s $p4_option add | \
      egrep -v "$ignore"
else
     if [ -f "$add_trail" ]
     then
         p4 -s $p4_client add $add_trail | \
          egrep -v "$ignore"
     elif [ -d "$add_trail" ]
     then
         ls -p $add_trail | grep -v /$ | \
          awk -v dir=$add_trail '{print dir$1}' | \
          p4 -s $p4_option add | \
          egrep -v "$ignore"
     else
         echo "$prog, Error: Workspace must be a file or directory"
         exit 1
     fi
fi

#grep sends a status of 2 on errors
if [ $? -gt 1 ]
then
   echo $errmsg
   stat=1
fi



# Perforce with -s option will echo to standard out
# error: a.a - file(s) not on client.
# error: update_depot - file(s) up-to-date.
# and exit with status 0.
# without the -s option it echos to standard error.


# These warnings can be ignored with p4 edit and delete.
ignore=' not on client.| up-to-date.|exit:'
echo "Looking for modified files"

errmsg="$prog, Error: Failed trying to edit files for update."

# add modified files
#p4 $p4_client diff -se $trail 2>$errors | p4 -s $p4_option edit 2>$errors
p4 -s $p4_client diff -se $trail | \
 egrep -v "$ignore" | \
 cut -d" " -f2- | \
 p4 -s $p4_option edit

stat=`expr $stat + $?`


echo "Looking for deleted files"

errmsg="$prog, Error: Failed trying to edit files for delete."

# delete files
#p4 $p4_client diff -sd $trail 2>$errors | p4 -s $p4_option delete 2>$errors
p4 -s $p4_client diff -sd $trail |\
 egrep -v "$ignore" | \
 cut -d" " -f2- | \
 p4 -s $p4_option delete

stat=`expr $stat + $?`

if [ $stat -ne 0 ]
then
    echo $prog ended with error
fi

exit $stat

# The following is not used.  This was the first implementation of this
# program.  I'm leaving it here for reference.
##ADD_CHANGES()
##{
# Parameters:
#        $1 Location of files to check in
#        $2 Location of client files mapped from perforce.
#        $3 Client
# Idea:
#     1. Output changes to $1 ( done prior to running this subroutine )
#     2. Sync files from Perforce to $2 (Done prior to running this subroutine )
#     3. Compute the difference between $1 and $2
#     4. Move $1 to $2
#     5. Check in files using result of #3.

##  if [ $# -eq 3 ]
##  then
##     P4CLIENT=$3
##     export P4CLIENT
##  fi

##  $work_dir/cmpdir $1 $2
##  stat=$?

##  mv -fr $1 $2
##  stat=`expr $? + $stat`

  
##  p4 -s -x $WORK_DIR/new.o add
##  stat=`expr $? + $stat`
##  p4 -s -x $WORK_DIR/del.o delete
##  stat=`expr $? + $stat`
##  p4 -s -x $WORK_DIR/mod.o edit
##  stat=`expr $? + $stat`

##  exit $stat