#!/bin/sh
#
# Written by Dridi Boukelmoune <dridi.boukelmoune@gmail.com>
#
# This file is in the public domain.
#
# 4.4.  Entry Eviction When Adding New Entries
#
#    Before a new entry is added to the dynamic table, entries are evicted
#    from the end of the dynamic table until the size of the dynamic table
#    is less than or equal to (maximum size - new entry size) or until the
#    table is empty.
#
#    If the size of the new entry is less than or equal to the maximum
#    size, that entry is added to the table.  It is not an error to
#    attempt to add an entry that is larger than the maximum size; an
#    attempt to add an entry larger than the maximum size causes the table
#    to be emptied of all existing entries and results in an empty table.
#
#    A new entry can reference the name of an entry in the dynamic table
#    that will be evicted when adding this new entry into the dynamic
#    table.  Implementations are cautioned to avoid deleting the
#    referenced name if the referenced entry is evicted from the dynamic
#    table prior to inserting the new entry.

. "$(dirname "$0")"/common.sh

_ ------------------------
_ Insert in an empty table
_ ------------------------

mk_hex <<EOF
# dynamic field "name: value"
4004 6e61 6d65 0576 616c 7565           | @.name.value
EOF

mk_msg <<EOF
name: value
EOF

mk_tbl <<EOF
[  1] (s =  41) name: value
      Table size:  41
EOF

mk_enc <<EOF
dynamic str name str value
EOF

tst_decode
tst_encode

_ -------------------
_ Insertion may evict
_ -------------------

mk_hex <<EOF
# dynamic field "name: value"
4004 6e61 6d65 0576 616c 7565           | @.name.value

# dynamic field "name: update"
4004 6e61 6d65 0675 7064 6174 65        | @.name.update
EOF

mk_msg <<EOF
name: value
name: update
EOF

mk_tbl <<EOF
[  1] (s =  42) name: update
      Table size:  42
EOF

mk_enc <<EOF
dynamic str name str value
dynamic str name str update
EOF

tst_decode --table-size 42
tst_encode --table-size 42

_ ---------------------------------
_ Insertion too large for the table
_ ---------------------------------

mk_hex <<EOF
4004 6e61 6d65 0e76 616c 7565 2d74 6f6f | @.name.value-too
2d6c 6f6e 67                            | -long
EOF

mk_msg <<EOF
name: value-too-long
EOF

mk_tbl </dev/null

mk_enc <<EOF
dynamic str name str value-too-long
EOF

tst_decode --table-size 42
tst_encode --table-size 42

_ ----------------------------------------
_ Use the indexed name of an evicted field
_ ----------------------------------------

mk_hex <<EOF
4004 6e61 6d65 0576 616c 7565 7e06 7570 | @.name.value~.up
6461 7465                               | date
EOF

mk_msg <<EOF
name: value
name: update
EOF

mk_tbl <<EOF
[  1] (s =  42) name: update
      Table size:  42
EOF

mk_enc <<EOF
dynamic str name str value
dynamic idx 62 str update
EOF

tst_decode --table-size 42
tst_encode --table-size 42

_ -------------------------------------------------------------
_ Use the indexed name of an evicted field in a non-empty table
_ -------------------------------------------------------------

mk_hex <<EOF
4004 6e61 6d65 0576 616c 7565 4005 6f74 | @.name.value@.ot
6865 7205 656e 7472 797f 0006 7570 6461 | her.entry...upda
7465                                    | te
EOF

mk_msg <<EOF
name: value
other: entry
name: update
EOF

mk_tbl <<EOF
[  1] (s =  42) name: update
[  2] (s =  42) other: entry
      Table size:  84
EOF

mk_enc <<EOF
dynamic str name str value
dynamic str other str entry
dynamic idx 63 str update
EOF

tst_decode --table-size 84
tst_encode --table-size 84