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#!/bin/bash
# Copyright 2017 The TCell Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use file except in compliance with the License.
# You may obtain a copy of the license at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# When called with no arguments, this shell script builds the Go database,
# which is somewhat minimal for size reasons (it only contains the most
# commonly used entries), and then builds the complete JSON database.
#
# To limit the action to only building one or more terminals, specify them
# on the command line:
#
# ./mkdatabase xterm
#
# The script will also find and update or add any terminal "aliases".
# It does not remove any old entries.
#
# To add to the set of terminals that we compile into the Go database,
# add their names to the models.txt file.
#
# This script is not very efficient, but there isn't really a better way
# without writing code to decode the terminfo binary format directly.
# Its not worth worrying about.
# This script also requires bash, although ksh93 should work as well, because
# we use arrays, which are not specified in POSIX.
export LANG=C
export LC_CTYPE=C
progress()
{
typeset -i num=$1
typeset -i tot=$2
typeset -i x
typeset back
typeset s
if (( tot < 1 ))
then
s=$(printf "[ %d ]" $num)
back="\b\b\b\b\b"
x=$num
while (( x >= 10 ))
do
back="${back}\b"
x=$(( x / 10 ))
done
else
x=$(( num * 100 / tot ))
s=$(printf "<%3d%%>" $x)
back="\b\b\b\b\b\b"
fi
printf "%s${back}" "$s"
}
ord()
{
printf "%02x" "'$1'"
}
goterms=( $(cat models.txt) )
args=( $* )
if (( ${#args[@]} == 0 ))
then
args=( $(toe -a | cut -f1) )
fi
printf "Scanning terminal definitions: "
i=0
aliases=()
models=()
for term in ${args[@]}
do
case "${term}" in
*-truecolor)
line="${term}|24-bit color"
;;
*)
line=$(infocmp $term | head -2 | tail -1)
if [[ -z "$line" ]]
then
echo "Cannot find terminfo for $term"
exit 1
fi
# take off the trailing comma
line=${line%,}
esac
# grab primary name
term=${line%%|*}
all+=( ${term} )
# should this be in our go terminals?
for model in ${goterms[@]}
do
if [[ "${model}" == "${term}" ]]
then
models+=( ${term} )
fi
done
# chop off primary name
line=${line#${term}}
line=${line#|}
# chop off description
line=${line%|*}
while [[ "$line" != "" ]]
do
a=${line%%|*}
aliases+=( ${a}=${term} )
line=${line#$a}
line=${line#|}
done
i=$(( i + 1 ))
progress $i ${#args[@]}
done
echo
# make sure we have mkinfo
printf "Building mkinfo: "
go build mkinfo.go
echo "done."
# Build all the go database files for the "interesting" terminals".
printf "Building Go database: "
i=0
for model in ${models[@]}
do
safe=$(echo $model | tr - _)
file=term_${safe}.go
./mkinfo -go $file $model
go fmt ${file} >/dev/null
i=$(( i + 1 ))
progress $i ${#models[@]}
done
echo
printf "Building JSON database: "
# The JSON files are located for each terminal in a file with the
# terminal name, in the following fashion "database/x/xterm.json
i=0
for model in ${all[@]}
do
letter=$(ord ${model:0:1})
dir=database/${letter}
file=${dir}/${model}.gz
mkdir -p ${dir}
./mkinfo -nofatal -quiet -gzip -json ${file} ${model}
i=$(( i + 1 ))
progress $i ${#all[@]}
done
echo
printf "Building JSON aliases: "
i=0
for model in ${aliases[@]}
do
canon=${model#*=}
model=${model%=*}
letter=$(ord ${model:0:1})
cletter=$(ord ${canon:0:1})
dir=database/${letter}
file=${dir}/${model}
if [[ -f database/${cletter}/${canon}.gz ]]
then
[[ -d ${dir} ]] || mkdir -p ${dir}
# Generally speaking the aliases are better uncompressed
./mkinfo -nofatal -quiet -json ${file} ${model}
fi
i=$(( i + 1 ))
progress $i ${#aliases[@]}
done
echo
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