#!/bin/sh
#
# text2c.sh - convert a text file to C code
#
# Copyright (C) 2008  Phil Sutter <phil@nwl.cc>
# 
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
# 
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# You should have received a copy of the GNU General Public License along
# with this program.  If not, see <http://www.gnu.org/licenses/>.


# Invocation is as follows:
# $1: text file
# $2: output file
# $3: name of variable
#
# The output will be a char **, with each field containing a single line of $1.
# Additionally, a macro with the name print_$3 will be defined, with acts as
# a parameter-less function, printing the text to stdout.

[ $# -eq 3 ] || {
	echo "Usage: `basename $0` <inputfile> <outputfile> <variablename>"
	exit 1
}

outupper="`basename "$2" | tr '[a-z-.]' '[A-Z__]'`"

(
	printf "#ifndef __%s\n" "$outupper"
	printf "#define __%s\n" "$outupper"
	printf "\n#define %s { \\" $3
	printf "\n"
	sed -e 's/"/\\"/g' -e 's/^/"/' -e 's/$/\\n", \\/' $1
	printf "NULL }\n"
	printf "\n#define print_%s() { \\" $3
	printf "\n\tconst char **__sp, *__s[] = %s; \\" $3
	printf "\n\tfor (__sp = __s; *__sp; __sp++) \\"
	printf "\n\t\tprintf(\"%s\", *__sp); \\" "%s"
	printf "\n}\n\n"
	printf "#endif /* __%s */\n" "$outupper"
) > $2