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|
#!/usr/bin/env bash
#
# gen-header.sh
#
# Field G. Van Zee
#
#
print_usage()
{
local script_name
# Get the script name
script_name=${0##*/}
# Echo usage info
echo " "
echo " "${script_name}
echo " "
echo " Field G. Van Zee"
echo " "
echo " Automatically updates the C .h header file for the source code"
echo " in a given directory. The .h file must already exist--though the"
echo " contents are not used."
echo " "
echo " Usage:"
echo " ${script_name} tmpl_dir src_dir"
echo " "
echo " "
# Exit with non-zero exit status
exit 1
}
main()
{
local script_name
local tmpl_dir
local src_dir
local header_filename
local tmpl_header_filepath
local src_header_filepath
local fla_function_regexp
local fla_prototypes_list
# Check the number of arguments after command line option processing.
if [ $# != "2" ]; then
print_usage
fi
# Extract arguments.
script_name=${0##*/}
tmpl_dir="$1"
src_dir="$2"
# Check existence of the directories provided through the command-line.
if [ ! -d "${tmpl_dir}" ]; then
echo "${script_name}: Template directory does not exist (${tmpl_dir})."
exit 1
fi
if [ ! -d "${src_dir}" ]; then
echo "${script_name}: Source directory does not exist (${src_dir})."
exit 1
fi
# Determine the template and destination filepaths to the of .h files. (Here we decide that
# the destination will be the source directory.)
tmpl_header_filename="FLA_alg.h"
tmpl_header_filepath="${tmpl_dir}/${tmpl_header_filename}"
# Check existance of the template header file.
if [ ! -f "${tmpl_header_filepath}" ]; then
echo "${script_name}: Failed to find template header file (${tmpl_header_filename}) in template directory (${tmpl_dir})."
exit 1
fi
# Acquire the name of the local .h file. This assumes we have a .h file present in src_dir.
# Then strip the path to leave just the filename.
src_header_filepath="$(ls ${src_dir}/*.h 2> /dev/null | head -1)"
src_header_filename=${src_header_filepath##*/}
# We assume we have a .h file present in src_dir. Without a .h file, we can't proceed.
if [ ! -f "${src_header_filepath}" ]; then
echo "${script_name}: An FLA_*.h header file must exist in source directory (${src_dir})."
exit 1
fi
# Acquire a list of all FLAME functions in the local .c files. This assumes the functions
# begin with 'FLA_'.
fla_function_regexp='^int FLA_'
inv_glue_regexp='_glue'
#fla_prototypes_list=$(grep "${fla_function_regexp}" ${src_dir}/*.c | grep FLA_Obj | grep -v ${inv_glue_regexp} | cut -d: -f2 | sed s/')'/');'/g)
fla_prototypes_list=$(grep "${fla_function_regexp}" ${src_dir}/*.c | grep FLA_Obj | grep -v ${inv_glue_regexp} | cut -d: -f2 | sed s/')'[[:space:]]*$/');'/g)
# First replace the old header file with a fresh template, then create the new header by
# appending the prototypes to the new template header file.
cp ${tmpl_header_filepath} ${src_header_filepath}
echo "${fla_prototypes_list}" >> ${src_header_filepath}
echo -e "" >> ${src_header_filepath}
# Exit peacefully.
return 0
}
main "$@"
|
