diff options
Diffstat (limited to 'python/vyos/configtree.py')
| -rw-r--r-- | python/vyos/configtree.py | 62 |
1 files changed, 7 insertions, 55 deletions
diff --git a/python/vyos/configtree.py b/python/vyos/configtree.py index 0274f3573..a0b0eb3c1 100644 --- a/python/vyos/configtree.py +++ b/python/vyos/configtree.py @@ -24,58 +24,10 @@ def escape_backslash(string: str) -> str: result = p.sub(r'\\\\', string) return result -def strip_comments(s): - """ Split a config string into the config section and the trailing comments """ - INITIAL = 0 - IN_COMMENT = 1 - - i = len(s) - 1 - - state = INITIAL - - config_end = 0 - - # Find the first character of the comments section at the end, - # if it exists - while (i >= 0): - c = s[i] - - if (state == INITIAL) and re.match(r'\s', c): - # Ignore whitespace - if (i != 0): - i -= 1 - else: - config_end = 0 - break - elif (state == INITIAL) and not re.match(r'(\s|\/)', c): - # Assume there are no (more) trailing comments, - # this is an end of a node: either a brace of the last character - # of a leaf node value - config_end = i + 1 - break - elif (state == INITIAL) and (c == '/'): - # A comment begins, or it's a stray slash - if (s[i-1] == '*'): - state = IN_COMMENT - i -= 2 - else: - raise ValueError("Invalid syntax: stray slash at character {0}".format(i + 1)) - elif (state == IN_COMMENT) and (c == '*'): - # A comment ends here - try: - if (s[i-1] == '/'): - state = INITIAL - i -= 2 - except: - raise ValueError("Invalid syntax: malformed commend end at character {0}".format(i + 1)) - elif (state == IN_COMMENT) and (c != '*'): - # Ignore everything inside comments, including braces - i -= 1 - else: - # Shouldn't happen - raise ValueError("Invalid syntax at character {0}: invalid character {1}".format(i + 1, c)) - - return (s[0:config_end], s[config_end+1:]) +def extract_version(s): + """ Extract the version string from the config string """ + t = re.split('(^//)', s, maxsplit=1, flags=re.MULTILINE) + return (s, ''.join(t[1:])) def check_path(path): # Necessary type checking @@ -174,7 +126,7 @@ class ConfigTree(object): self.__destroy = self.__lib.destroy self.__destroy.argtypes = [c_void_p] - config_section, comments_section = strip_comments(config_string) + config_section, version_section = extract_version(config_string) config_section = escape_backslash(config_section) config = self.__from_string(config_section.encode()) if config is None: @@ -182,7 +134,7 @@ class ConfigTree(object): raise ValueError("Failed to parse config: {0}".format(msg)) else: self.__config = config - self.__comments = comments_section + self.__version = version_section def __del__(self): if self.__config is not None: @@ -193,7 +145,7 @@ class ConfigTree(object): def to_string(self): config_string = self.__to_string(self.__config).decode() - config_string = "{0}\n{1}".format(config_string, self.__comments) + config_string = "{0}\n{1}".format(config_string, self.__version) return config_string def to_commands(self): |