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Added -i option to ignore general regexps

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Guido van Rossum 1994-05-17 09:05:54 +00:00
parent 846c3224a8
commit 01f5f62401
1 changed files with 27 additions and 19 deletions
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46
Tools/scripts/h2py.py
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@ -1,17 +1,21 @@
#! /usr/local/bin/python #! /usr/local/bin/python
# Read #define's from stdin and translate to Python code on stdout. # Read #define's from stdin and translate to Python code on stdout.
# Very primitive: non-#define's are ignored. # Very primitive: non-#define's are ignored, as is anything that isn't
# You will have to edit the output in some cases. # valid Python as it stands.
# If one or more filenames are given, output is written to corresponding # If one or more filenames are given, output is written to corresponding
# filenames in the local directory, translated to all uppercase, with # filenames in the local directory, translated to all uppercase, with
# the extension replaced by ".py". # the extension replaced by ".py".
# By passing one or more options of the form "-i regular_expression"
# you can specify additional strings to be ignored. This is useful
# e.g. to ignore casts to u_long: simply specify "-i '(u_long)'".
# XXX To do: # XXX To do:
# - turn trailing C comments into Python comments # - turn trailing C comments into Python comments
# - turn C string quotes into Python comments # - turn C string quotes into Python comments
# - turn C Boolean operators "&& || !" into Python "and or not" # - turn C Boolean operators "&& || !" into Python "and or not"
# - what to do about #if(def)? # - what to do about #if(def)?
# - what to do about #include?
# - what to do about macros with parameters? # - what to do about macros with parameters?
# - reject definitions with semicolons in them # - reject definitions with semicolons in them
@ -21,8 +25,13 @@ p_define = regex.compile('^#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)[\t ]+')
p_comment = regex.compile('/\*\([^*]+\|\*+[^/]\)*\(\*+/\)?') p_comment = regex.compile('/\*\([^*]+\|\*+[^/]\)*\(\*+/\)?')
ignores = [p_comment]
def main(): def main():
opts, args = getopt.getopt(sys.argv[1:], '') opts, args = getopt.getopt(sys.argv[1:], 'i:')
for o, a in opts:
if o == '-i':
ignores.append(regex.compile(a))
if not args: if not args:
args = ['-'] args = ['-']
for filename in args: for filename in args:
@ -49,22 +58,21 @@ def process(fp, outfp):
line = fp.readline() line = fp.readline()
if not line: break if not line: break
lineno = lineno + 1 lineno = lineno + 1
if p_define.match(line) >= 0: # gobble up continuation lines
# gobble up continuation lines while line[-2:] == '\\\n':
while line[-2:] == '\\\n': nextline = fp.readline()
nextline = fp.readline() if not nextline: break
if not nextline: break lineno = lineno + 1
lineno = lineno + 1 line = line + nextline
line = line + nextline n = p_define.match(line)
regs = p_define.regs if n >= 0:
a, b = regs[1] # where the macro name is name = p_define.group(1)
name = line[a:b] body = line[n:]
a, b = regs[0] # the whole match # replace ignored patterns by spaces
body = line[b:] for p in ignores:
# replace comments by spaces while p.search(body) >= 0:
while p_comment.search(body) >= 0: a, b = p.regs[0]
a, b = p_comment.regs[0] body = body[:a] + ' ' + body[b:]
body = body[:a] + ' ' + body[b:]
stmt = '%s = %s\n' % (name, string.strip(body)) stmt = '%s = %s\n' % (name, string.strip(body))
ok = 0 ok = 0
try: try: