mkconstfs.py
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#!/usr/bin/env python3
import codecs
import os
import sys
FILE_TYPE = "static const uint8_t"
def mkconstfs(root_path, mount_point, constfs_name):
print("/* This file was automatically generated by mkconstfs */")
print("#include \"fs/constfs.h\"")
print("")
for dirname, subdir_list, file_list in os.walk(root_path):
target_dirname = os.path.join("/", dirname[len(root_path):])
for fname in file_list:
local_fname = os.path.join(dirname, fname)
target_fname = os.path.join(target_dirname, fname)
print_file_data(local_fname, target_fname)
print("\nstatic const constfs_file_t _files[] = {")
for mangled_name, target_name, _ in files:
print(" {")
print(" .path = \"%s\"," % target_name)
print(" .data = %s," % mangled_name)
print(" .size = sizeof(%s)" % mangled_name)
print(" },")
print("};")
print("""
static const constfs_t _fs_data = {
.files = _files,
.nfiles = sizeof(_files) / sizeof(_files[0]),
};
vfs_mount_t %s = {
.fs = &constfs_file_system,
.mount_point = \"%s\",
.private_data = (void *)&_fs_data,
};
""" % (constfs_name, mount_point))
def mangle_name(fname):
fname = fname.replace("/", "__")
fname = fname.replace(".", "__")
return fname
def print_file_data(local_fname, target_fname):
mangled_name = mangle_name(target_fname)
print(FILE_TYPE, mangled_name, "[] = {", end="")
line_length = 8
nread = 0
with open(local_fname, 'rb') as f:
byte = f.read(1)
while byte:
if nread == 0:
print("\n ", end="")
elif nread % line_length == 0:
print(",\n ", end="")
else:
print(", ", end="")
nread += 1
print ("0x" + codecs.encode(byte, 'hex').decode('ascii'), end="")
# Do stuff with byte.
byte = f.read(1)
print("\n};")
files.append((mangled_name, target_fname, nread))
files = []
if __name__=="__main__":
mountpoint = "/"
constfs_name = "_constfs"
if len(sys.argv) < 2:
print("usage: mkconstfs.py <path> [mountpoint] [constfs_name]")
exit(1)
path = sys.argv[1]
if len(sys.argv) > 2:
mountpoint = sys.argv[2]
if len(sys.argv) > 3:
constfs_name = sys.argv[3]
mkconstfs(path, mountpoint, constfs_name)