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#! /usr/bin/env python3

import argparse

import os

import os.path

import sys

import re

from string import Template

parser = argparse.ArgumentParser(description='Apply #define values to .template.ld file.')

parser.add_argument('template_files', metavar='TEMPLATE_FILE', type=argparse.FileType('r'),

nargs='+', help="template filename: <something>.template.ld")

parser.add_argument('--defines', type=argparse.FileType('r'), required=True)

parser.add_argument('--out_dir', required=True)

args = parser.parse_args()

defines = {}

REMOVE_UL_RE = re.compile('([0-9]+)UL')

def remove_UL(s):

return REMOVE_UL_RE.sub(r'\1', s)

# We skip all lines before

# // START_LD_DEFINES

# Then we look for lines like this:

# /*NAME_OF_VALUE=*/ NAME_OF_VALUE;

VALUE_LINE_RE = re.compile(r'^/\*\s*(\w+)\s*=\*/\s*(.*);\s*$')

start_processing = False

for line in args.defines:

line = line.strip()

if line == '// START_LD_DEFINES':

start_processing = True

continue

if start_processing:

match = VALUE_LINE_RE.match(line)

if match:

name = match.group(1)

value = match.group(2).strip()

defines[name] = remove_UL(value)

fail = False

for template_file in args.template_files:

ld_template_basename = os.path.basename(template_file.name)

ld_pathname = os.path.join(args.out_dir, ld_template_basename.replace('.template.ld', '.ld'))

with open(ld_pathname, 'w') as output:

for k,v in defines.items():

print('/*', k, '=', v, '*/', file=output)

print(file=output)

try:

output.write(Template(template_file.read()).substitute(defines))

except KeyError as e:

print("ERROR: {}: No #define for '{}'".format(ld_pathname, e.args[0]), file=sys.stderr)

fail = True

if fail:

sys.exit(1)