NetBSD/lib/libterminfo/genhash

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#!/bin/sh
# $NetBSD: genhash,v 1.9 2017/01/11 20:53:52 roy Exp $
# Copyright (c) 2009, 2011 The NetBSD Foundation, Inc.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Roy Marples.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Generate string and hash tables for our terminfo strings in term.h
# We don't expose the hash or tables directly, but instead via functions.
# This allows us to freely change how we hash or store our string tables
# in the future.
set -e
: ${TOOL_AWK:=awk}
: ${TOOL_NBPERF:=nbperf}
: ${TOOL_SED:=sed}
TERMH=${1:-term.h}
genent()
{
local name=$1 NAME=$2 len=
# Calculate the maximum word length plus terminator
len=$($TOOL_SED -e "1,/enum TI${NAME}/d" -e '/};/,$d' \
-e 's/.*TICODE_\([^,]*\).*/\1X/' $TERMH | \
$TOOL_AWK \
'BEGIN {L=0} {if (length($1)>L) L=length($1)} END {print L}')
echo
echo "static const char _ti_${name}ids[][${len}] = {"
$TOOL_SED -e "1,/enum TI${NAME}/d" -e '/};/,$d' \
-e 's/.*TICODE_\([^,]*\).*/ "\1",/' $TERMH
echo "};"
echo
$TOOL_SED -e "1,/enum TI${NAME}/d" -e '/};/,$d' \
-e 's/.*TICODE_\([^,]*\).*/\1/' $TERMH | \
$TOOL_NBPERF -p -s -n _ti_${name}hash;
cat <<EOF
const char *
_ti_${name}id(ssize_t idx)
{
if ((size_t)idx >= __arraycount(_ti_${name}ids))
return NULL;
return _ti_${name}ids[idx];
}
ssize_t
_ti_${name}index(const char *key)
{
uint32_t idx;
idx = _ti_${name}hash((const unsigned char *)key, strlen(key));
if (idx >= __arraycount(_ti_${name}ids) ||
strcmp(key, _ti_${name}ids[idx]) != 0)
return -1;
return idx;
}
EOF
}
cat <<EOF
/* DO NOT EDIT
* Automatically generated from term.h */
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <term_private.h>
#include <term.h>
EOF
genent flag FLAG
genent num NUM
genent str STR