136 lines
3.8 KiB
Python
136 lines
3.8 KiB
Python
"""
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This script processes the output from the C preprocessor and extracts all
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qstr. Each qstr is transformed into a qstr definition of the form 'Q(...)'.
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This script works with Python 2.6, 2.7, 3.3 and 3.4.
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"""
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from __future__ import print_function
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import re
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import sys
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import io
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import os
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# Extract MP_QSTR_FOO macros.
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_MODE_QSTR = "qstr"
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# Extract MP_COMPRESSED_ROM_TEXT("") macros. (Which come from MP_ERROR_TEXT)
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_MODE_COMPRESS = "compress"
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def write_out(fname, output):
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if output:
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for m, r in [("/", "__"), ("\\", "__"), (":", "@"), ("..", "@@")]:
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fname = fname.replace(m, r)
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with open(args.output_dir + "/" + fname + "." + args.mode, "w") as f:
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f.write("\n".join(output) + "\n")
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def process_file(f):
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re_line = re.compile(r"#[line]*\s\d+\s\"([^\"]+)\"")
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if args.mode == _MODE_QSTR:
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re_match = re.compile(r"MP_QSTR_[_a-zA-Z0-9]+")
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elif args.mode == _MODE_COMPRESS:
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re_match = re.compile(r'MP_COMPRESSED_ROM_TEXT\("([^"]*)"\)')
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output = []
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last_fname = None
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for line in f:
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if line.isspace():
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continue
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# match gcc-like output (# n "file") and msvc-like output (#line n "file")
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if line.startswith(("# ", "#line")):
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m = re_line.match(line)
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assert m is not None
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fname = m.group(1)
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if not fname.endswith(".c"):
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continue
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if fname != last_fname:
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write_out(last_fname, output)
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output = []
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last_fname = fname
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continue
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for match in re_match.findall(line):
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if args.mode == _MODE_QSTR:
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name = match.replace("MP_QSTR_", "")
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output.append("Q(" + name + ")")
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elif args.mode == _MODE_COMPRESS:
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output.append(match)
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write_out(last_fname, output)
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return ""
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def cat_together():
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import glob
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import hashlib
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hasher = hashlib.md5()
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all_lines = []
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outf = open(args.output_dir + "/out", "wb")
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for fname in glob.glob(args.output_dir + "/*." + args.mode):
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with open(fname, "rb") as f:
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lines = f.readlines()
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all_lines += lines
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all_lines.sort()
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all_lines = b"\n".join(all_lines)
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outf.write(all_lines)
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outf.close()
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hasher.update(all_lines)
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new_hash = hasher.hexdigest()
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# print(new_hash)
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old_hash = None
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try:
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with open(args.output_file + ".hash") as f:
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old_hash = f.read()
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except IOError:
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pass
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mode_full = "QSTR"
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if args.mode == _MODE_COMPRESS:
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mode_full = "Compressed data"
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if old_hash != new_hash:
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print(mode_full, "updated")
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try:
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# rename below might fail if file exists
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os.remove(args.output_file)
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except:
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pass
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os.rename(args.output_dir + "/out", args.output_file)
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with open(args.output_file + ".hash", "w") as f:
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f.write(new_hash)
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else:
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print(mode_full, "not updated")
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if __name__ == "__main__":
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if len(sys.argv) != 6:
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print("usage: %s command mode input_filename output_dir output_file" % sys.argv[0])
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sys.exit(2)
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class Args:
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pass
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args = Args()
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args.command = sys.argv[1]
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args.mode = sys.argv[2]
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args.input_filename = sys.argv[3] # Unused for command=cat
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args.output_dir = sys.argv[4]
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args.output_file = None if len(sys.argv) == 5 else sys.argv[5] # Unused for command=split
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if args.mode not in (_MODE_QSTR, _MODE_COMPRESS):
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print("error: mode %s unrecognised" % sys.argv[2])
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sys.exit(2)
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try:
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os.makedirs(args.output_dir)
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except OSError:
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pass
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if args.command == "split":
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with io.open(args.input_filename, encoding="utf-8") as infile:
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process_file(infile)
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if args.command == "cat":
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cat_together()
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