diff --git a/engine.sh b/engine.sh new file mode 100755 index 0000000..aa277ff --- /dev/null +++ b/engine.sh @@ -0,0 +1,95 @@ +#!/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" +} diff --git a/example.sh b/example.sh new file mode 100755 index 0000000..4ef59b5 --- /dev/null +++ b/example.sh @@ -0,0 +1,11 @@ +#!/bin/bash + +. engine.sh + +template "example.templ" " + title='Users' + users=( + 'Alice' + 'Bob' + ) +" diff --git a/example.templ b/example.templ new file mode 100644 index 0000000..6960b9d --- /dev/null +++ b/example.templ @@ -0,0 +1,13 @@ + + + + {{ print "$title" }} + + + + +