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author | 2016-09-12 08:55:13 -0400 | |
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committer | 2016-09-21 15:42:25 -0400 | |
commit | 90f52bf990791ea73479ffc50fc1eb3450de443a (patch) | |
tree | ffcd6f5a94c4fc1a44ce9a3e088f18449007e3db /doxygen/siphon/generate.py | |
parent | ce64b8e5b247149887caf77fd139d2a6880acbe6 (diff) |
Refactor pre-Doxy siphon scripts; VPP-396
- Modularize the code to make the Siphon process easier to
maintain.
- Move much of the output rendering into Jinja2 templates.
- Add syscfg siphon type for startup config documentation.
- Add sample syscfg documentation.
- Add clicfg and syscfg preamble docs, adapted from their wiki pages.
- Fix sorting of CLI items across multiple directories.
Change-Id: Ib8288fe005adfea68ceed75a38ff8eba25d3cc79
Signed-off-by: Chris Luke <chrisy@flirble.org>
Diffstat (limited to 'doxygen/siphon/generate.py')
-rw-r--r-- | doxygen/siphon/generate.py | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/doxygen/siphon/generate.py b/doxygen/siphon/generate.py new file mode 100644 index 00000000..d6b6faf3 --- /dev/null +++ b/doxygen/siphon/generate.py @@ -0,0 +1,304 @@ +# Copyright (c) 2016 Comcast Cable Communications Management, LLC. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# Generate .siphon source fragments for later processing + +import logging +import os, sys, re, json + +"""List of (regexp, siphon_name) tuples for matching the start of C + initializer blocks in source files. Each siphon class registers + themselves on tihs list.""" +siphon_patterns = [] + +class Generate(object): + """Matches a siphon comment block start""" + siphon_block_start = re.compile("^\s*/\*\?\s*(.*)$") + + """Matches a siphon comment block stop""" + siphon_block_stop = re.compile("^(.*)\s*\?\*/\s*$") + + """Siphon block directive delimiter""" + siphon_block_delimiter = "%%" + + """Matches a siphon block directive such as + '%clicmd:group_label Debug CLI%'""" + siphon_block_directive = re.compile("(%s)\s*([a-zA-Z0-9_:]+)\s+(.*)\s*(%s)" % \ + (siphon_block_delimiter, siphon_block_delimiter)) + + """Matches the start of an initializer block""" + siphon_initializer = re.compile("\s*=") + + """Collated output for each siphon""" + output = None + + """Directory prefix to strip from input filenames to keep things tidy.""" + input_prefix = None + + """List of known siphons""" + known_siphons = None + + """Logging handler""" + log = None + + + def __init__(self, output_directory, input_prefix): + super(Generate, self).__init__() + self.log = logging.getLogger("siphon.generate") + + # Build a list of known siphons + self.known_siphons = [] + for item in siphon_patterns: + siphon = item[1] + if siphon not in self.known_siphons: + self.known_siphons.append(siphon) + + # Setup information for siphons we know about + self.output = {} + for siphon in self.known_siphons: + self.output[siphon] = { + "file": "%s/%s.siphon" % (output_directory, siphon), + "global": {}, + "items": [], + } + + self.input_prefix = input_prefix + + + """ + count open and close braces in str + return (0, index) when braces were found and count becomes 0. + index indicates the position at which the last closing brace was + found. + return (-1, -1) if a closing brace is found before any opening one. + return (count, -1) if not all opening braces are closed, count is the + current depth + """ + def count_braces(self, str, count=0, found=False): + for index in range(0, len(str)): + if str[index] == '{': + count += 1; + found = True + elif str[index] == '}': + if count == 0: + # means we never found an open brace + return (-1, -1) + count -= 1; + + if count == 0 and found: + return (count, index) + + return (count, -1) + + def parse(self, filename): + # Strip the current directory off the start of the + # filename for brevity + if filename[0:len(self.input_prefix)] == self.input_prefix: + filename = filename[len(self.input_prefix):] + if filename[0] == "/": + filename = filename[1:] + + # Work out the abbreviated directory name + directory = os.path.dirname(filename) + if directory[0:2] == "./": + directory = directory[2:] + elif directory[0:len(self.input_prefix)] == self.input_prefix: + directory = directory[len(self.input_prefix):] + if directory[0] == "/": + directory = directory[1:] + + # Open the file and explore its contents... + self.log.info("Siphoning from %s." % filename) + directives = {} + with open(filename) as fd: + siphon = None + close_siphon = None + siphon_block = "" + in_block = False + line_num = 0 + siphon_line = 0 + + for line in fd: + line_num += 1 + str = line[:-1] # filter \n + + """See if there is a block directive and if so extract it""" + def process_block_directive(str, directives): + m = self.siphon_block_directive.search(str) + if m is not None: + k = m.group(2) + v = m.group(3).strip() + directives[k] = v + # Return only the parts we did not match + return str[0:m.start(1)] + str[m.end(4):] + + return str + + def process_block_prefix(str): + if str.startswith(" * "): + str = str[3:] + elif str == " *": + str = "" + return str + + if not in_block: + # See if the line contains the start of a siphon doc block + m = self.siphon_block_start.search(str) + if m is not None: + in_block = True + t = m.group(1) + + # Now check if the block closes on the same line + m = self.siphon_block_stop.search(t) + if m is not None: + t = m.group(1) + in_block = False + + # Check for directives + t = process_block_directive(t, directives) + + # Filter for normal comment prefixes + t = process_block_prefix(t) + + # Add what is left + siphon_block += t + + # Skip to next line + continue + + else: + # Check to see if we have an end block marker + m = self.siphon_block_stop.search(str) + if m is not None: + in_block = False + t = m.group(1) + else: + t = str + + # Check for directives + t = process_block_directive(t, directives) + + # Filter for normal comment prefixes + t = process_block_prefix(t) + + # Add what is left + siphon_block += t + "\n" + + # Skip to next line + continue + + + if siphon is None: + # Look for blocks we need to siphon + for p in siphon_patterns: + if p[0].match(str): + siphon = [ p[1], str + "\n", 0 ] + siphon_line = line_num + + # see if we have an initializer + m = self.siphon_initializer.search(str) + if m is not None: + # count the braces on this line + (count, index) = \ + self.count_braces(str[m.start():]) + siphon[2] = count + # TODO - it's possible we have the + # initializer all on the first line + # we should check for it, but also + # account for the possibility that + # the open brace is on the next line + #if count == 0: + # # braces balanced + # close_siphon = siphon + # siphon = None + else: + # no initializer: close the siphon right now + close_siphon = siphon + siphon = None + else: + # See if we should end the siphon here - do we have + # balanced braces? + (count, index) = self.count_braces(str, + count=siphon[2], found=True) + if count == 0: + # braces balanced - add the substring and + # close the siphon + siphon[1] += str[:index+1] + ";\n" + close_siphon = siphon + siphon = None + else: + # add the whole string, move on + siphon[2] = count + siphon[1] += str + "\n" + + if close_siphon is not None: + # Write the siphoned contents to the right place + siphon_name = close_siphon[0] + + # Copy directives for the file + details = {} + for key in directives: + if ":" in key: + (sn, label) = key.split(":") + if sn == siphon_name: + details[label] = directives[key] + else: + details[key] = directives[key] + + # Copy details for this block + details['file'] = filename + details['directory'] = directory + details['line_start'] = siphon_line + details['line_end'] = line_num + details['siphon_block'] = siphon_block.strip() + details["block"] = close_siphon[1] + + # Store the item + self.output[siphon_name]['items'].append(details) + + # All done + close_siphon = None + siphon_block = "" + + # Update globals + for key in directives.keys(): + if ':' not in key: + continue + + if filename.endswith("/dir.dox"): + # very special! use the parent directory name + l = directory + else: + l = filename + + (sn, label) = key.split(":") + + if sn not in self.output: + self.output[sn] = {} + if 'global' not in self.output[sn]: + self.output[sn]['global'] = {} + if l not in self.output[sn]['global']: + self.output[sn]['global'][l] = {} + + self.output[sn]['global'][l][label] = directives[key] + + def deliver(self): + # Write out the data + for siphon in self.output.keys(): + self.log.info("Saving siphon data %s." % siphon) + s = self.output[siphon] + with open(s['file'], "a") as fp: + json.dump(s, fp, + separators=(',', ': '), indent=4, sort_keys=True) + |