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#!/bin/bash
##
## Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
##
## Use of this source code is governed by a BSD-style license and patent
## grant that can be found in the LICENSE file in the root of the source
## tree. All contributing project authors may be found in the AUTHORS
## file in the root of the source tree.
##
# gen_example_code.sh
self=$0
die_usage() {
echo "Usage: $self <example.txt>"
exit 1
}
die() {
echo "$@"
exit 1
}
include_block() {
show_bar=$1
block_name=${line##*@}
indent=${line%%${block_name}}
indent=${#indent}
[ $indent -eq 1 ] && indent=0
local on_block
while IFS=$'\n' read -r t_line; do
case "$t_line" in
\~*\ ${block_name})
if [ "x$on_block" == "xyes" ]; then
return 0;
else
on_block=yes
fi
;;
@DEFAULT)
if [ "x$on_block" == "xyes" ]; then
include_block $show_bar < "${template%.c}.txt"
return 0
fi
;;
*)
if [ "x$on_block" == "xyes" ]; then
local rem
(( rem = 78 - indent ))
case "$block_name" in
\**) printf "%${indent}s * %s\n" "" "$t_line" ;;
*)
if [ "$show_bar" == "yes" ]; then
printf "%${indent}s%-${rem}s//\n" "" "$t_line"
else
printf "%${indent}s%s\n" "" "$t_line"
fi
;;
esac
fi
esac
done
return 1
}
txt=$1
[ -f "$txt" ] || die_usage
read -r template < "$txt"
case "$template" in
@TEMPLATE*) template=${txt%/*}/${template##@TEMPLATE } ;;
*) die "Failed to parse template name from '$template'" ;;
esac
while IFS=$'\n' read -r line; do
case "$line" in
@*) include_block yes < "$txt" \
|| include_block < "${template%.c}.txt" \
#|| echo "WARNING: failed to find text for block $block_name" >&2
;;
*) echo "$line" ;;
esac
done < "$template"
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