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first working version

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overflowerror 2022-01-06 19:59:41 +01:00
parent 8689ebf690
commit 6b398f2571
3 changed files with 119 additions and 0 deletions
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95
engine.sh Executable file
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#!/bin/bash
template() {
eval "$2"
_template="$1"
_script=""
_buffer=""
_open=0
_close=0
_justHadNewline=0
_skipNextNewline=0
_dumpRawBuffer() {
# {{ can not occour in raw _buffer
_script+="printf '%s' $(printf "{{%s{{" "$_buffer" | sed "s/'/\\\'/g" | sed "s/{{/'/g")"
_script+=$'\n'
_buffer=""
}
_dumpCommandBuffer() {
_script+="$_buffer"
_script+=$'\n'
_buffer=""
}
_dumpOpen() {
for i in $(seq $_open); do
_buffer+="{"
done
_open=0
}
_dumpClose() {
for i in $(seq $_close); do
_buffer+="}"
done
_close=0
}
while read -r -N1 c; do
if test "$c " = '{ ' -a $_open -ne 2; then
if test $_open = 0; then
if test $_close = 1; then
_buffer+="}"
_close=0
fi
_open=1
else
_open=2
_dumpRawBuffer
if test $_justHadNewline -eq 1; then
_skipNextNewline=1
fi
fi
elif test "$c " = '} ' -a "$_open" -eq 2; then
if test $_close = 0; then
_close=1
else
_open=0
_close=0
_dumpCommandBuffer
fi
else
if test $_open -ne 2; then
_dumpOpen
_dumpClose
elif test $_open -eq 2 -a $_close -ne 0; then
_dumpClose
fi
if test "$c " = $'\n ' -o "$c " = $'\r '; then
_justHadNewline=1
if test $_skipNextNewline -eq 0; then
_buffer+="$c"
fi
else
_justHadNewline=0
_buffer+="$c"
fi
if test $_open -ne 2; then
_skipNextNewline=0
fi
fi
done < $_template
_dumpOpen
_dumpClose
_dumpRawBuffer
print() {
printf '%s' "$@"
}
#echo "$_script"
eval "$_script"
}

11
example.sh Executable file
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#!/bin/bash
. engine.sh
template "example.templ" "
title='Users'
users=(
'Alice'
'Bob'
)
"

13
example.templ Normal file
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<!DOCTYPE html>
<html>
<head>
<title>{{ print "$title" }}</title>
</head>
<body>
<ul>
{{ for user in "${users[@]}"; do }}
<li>{{ print "$user" }}</li>
{{ done }}
</ul>
</body>
</html>