How to use the gitlint.options.IntOption function in gitlint

class LeadingWhiteSpace(LineRule):
    name = "leading-whitespace"
    id = "R6"
    violation_message = "Line has leading whitespace"

    def validate(self, line, _commit):
        pattern = re.compile(r"^\s", re.UNICODE)
        if pattern.search(line):
            return [RuleViolation(self.id, self.violation_message, line)]


class TitleMaxLength(MaxLineLength):
    name = "title-max-length"
    id = "T1"
    target = CommitMessageTitle
    options_spec = [IntOption('line-length', 72, "Max line length")]
    violation_message = "Title exceeds max length ({0}>{1})"


class TitleTrailingWhitespace(TrailingWhiteSpace):
    name = "title-trailing-whitespace"
    id = "T2"
    target = CommitMessageTitle
    violation_message = "Title has trailing whitespace"


class TitleTrailingPunctuation(LineRule):
    name = "title-trailing-punctuation"
    id = "T3"
    target = CommitMessageTitle

    def validate(self, title, _commit):

that should only be done once per gitlint run.

While every LineRule can be implemented as a CommitRule, it's usually easier and more concise to go with a LineRule if
that fits your needs.
"""


class BodyMaxLineCount(CommitRule):
    # A rule MUST have a human friendly name
    name = "body-max-line-count"

    # A rule MUST have a *unique* id, we recommend starting with UC (for User-defined Commit-rule).
    id = "UC1"

    # A rule MAY have an option_spec if its behavior should be configurable.
    options_spec = [IntOption('max-line-count', 3, "Maximum body line count")]

    def validate(self, commit):
        line_count = len(commit.message.body)
        max_line_count = self.options['max-line-count'].value
        if line_count > max_line_count:
            message = "Body contains too many lines ({0} > {1})".format(line_count, max_line_count)
            return [RuleViolation(self.id, message, line_nr=1)]


class SignedOffBy(CommitRule):
    """ This rule will enforce that each commit contains a "Signed-Off-By" line.
    We keep things simple here and just check whether the commit body contains a line that starts with "Signed-Off-By".
    """

    # A rule MUST have a human friendly name
    name = "body-requires-signed-off-by"

def __init__(self):
        self.rules = RuleCollection(self.default_rule_classes)
        self._verbosity = options.IntOption('verbosity', 3, "Verbosity")
        self._ignore_merge_commits = options.BoolOption('ignore-merge-commits', True, "Ignore merge commits")
        self._ignore_fixup_commits = options.BoolOption('ignore-fixup-commits', True, "Ignore fixup commits")
        self._ignore_squash_commits = options.BoolOption('ignore-squash-commits', True, "Ignore squash commits")
        self._ignore_revert_commits = options.BoolOption('ignore-revert-commits', True, "Ignore revert commits")
        self._debug = options.BoolOption('debug', False, "Enable debug mode")
        self._extra_path = None
        target_description = "Path of the target git repository (default=current working directory)"
        self._target = options.PathOption('target', os.path.realpath(os.getcwd()), target_description)
        self._ignore = options.ListOption('ignore', [], 'List of rule-ids to ignore')
        self._contrib = options.ListOption('contrib', [], 'List of contrib-rules to enable')
        self._config_path = None
        ignore_stdin_description = "Ignore any stdin data. Useful for running in CI server."
        self._ignore_stdin = options.BoolOption('ignore-stdin', False, ignore_stdin_description)
        self._staged = options.BoolOption('staged', False, "Read staged commit meta-info from the local repository.")

def __init__(self, name, value, description, allow_negative=False):
        self.allow_negative = allow_negative
        super(IntOption, self).__init__(name, value, description)

def validate(self, commit):
        flags = re.UNICODE
        flags |= re.IGNORECASE
        for line in commit.message.body:
            if line.lower().startswith("signed-off-by"):
                if not re.search(r"(^)Signed-off-by: ([-'\w.]+) ([-'\w.]+) (.*)", line, flags=flags):
                    return [RuleViolation(self.id, "Signed-off-by: must have a full name", line_nr=1)]
                else:
                    return
        return [RuleViolation(self.id, "Body does not contain a 'Signed-off-by:' line", line_nr=1)]

class TitleMaxLengthRevert(LineRule):
    name = "title-max-length-no-revert"
    id = "UC5"
    target = CommitMessageTitle
    options_spec = [IntOption('line-length', 72, "Max line length")]
    violation_message = "Title exceeds max length ({0}>{1})"

    def validate(self, line, _commit):
        max_length = self.options['line-length'].value
        if len(line) > max_length and not line.startswith("Revert"):
            return [RuleViolation(self.id, self.violation_message.format(len(line), max_length), line)]

class TitleStartsWithSubsystem(LineRule):
    name = "title-starts-with-subsystem"
    id = "UC3"
    target = CommitMessageTitle
    options_spec = [StrOption('regex', ".*", "Regex the title should match")]

    def validate(self, title, _commit):
        regex = self.options['regex'].value
        pattern = re.compile(regex, re.UNICODE)

that fits your needs.
"""

from gitlint.rules import CommitRule, RuleViolation, CommitMessageTitle, LineRule, CommitMessageBody
from gitlint.options import IntOption, StrOption
import re

class BodyMinLineCount(CommitRule):
    # A rule MUST have a human friendly name
    name = "body-min-line-count"

    # A rule MUST have an *unique* id, we recommend starting with UC (for User-defined Commit-rule).
    id = "UC6"

    # A rule MAY have an option_spec if its behavior should be configurable.
    options_spec = [IntOption('min-line-count', 2, "Minimum body line count excluding Signed-off-by")]

    def validate(self, commit):
        filtered = [x for x in commit.message.body if not x.lower().startswith("signed-off-by") and x != '']
        line_count = len(filtered)
        min_line_count = self.options['min-line-count'].value
        if line_count < min_line_count:
            message = "Body has no content, should at least have {} line.".format(min_line_count)
            return [RuleViolation(self.id, message, line_nr=1)]

class BodyMaxLineCount(CommitRule):
    # A rule MUST have a human friendly name
    name = "body-max-line-count"

    # A rule MUST have an *unique* id, we recommend starting with UC (for User-defined Commit-rule).
    id = "UC1"

return u"{0}: {1} {2}: \"{3}\"".format(self.line_nr, self.rule_id, self.message,
                                               self.content)  # pragma: no cover

    def __repr__(self):
        return self.__str__()  # pragma: no cover


class UserRuleError(Exception):
    """ Error used to indicate that an error occurred while trying to load a user rule """
    pass


class MaxLineLength(LineRule):
    name = "max-line-length"
    id = "R1"
    options_spec = [IntOption('line-length', 80, "Max line length")]
    violation_message = "Line exceeds max length ({0}>{1})"

    def validate(self, line, _commit):
        max_length = self.options['line-length'].value
        if len(line) > max_length:
            return [RuleViolation(self.id, self.violation_message.format(len(line), max_length), line)]


class TrailingWhiteSpace(LineRule):
    name = "trailing-whitespace"
    id = "R2"
    violation_message = "Line has trailing whitespace"

    def validate(self, line, _commit):
        pattern = re.compile(r"\s$", re.UNICODE)
        if pattern.search(line):

id = "UC3"
    target = CommitMessageTitle
    options_spec = [StrOption('regex', ".*", "Regex the title should match")]

    def validate(self, title, _commit):
        regex = self.options['regex'].value
        pattern = re.compile(regex, re.UNICODE)
        violation_message = "Title does not follow [subsystem]: [subject] (and should not start with literal subsys:)"
        if not pattern.search(title):
            return [RuleViolation(self.id, violation_message, title)]

class MaxLineLengthExceptions(LineRule):
    name = "max-line-length-with-exceptions"
    id = "UC4"
    target = CommitMessageBody
    options_spec = [IntOption('line-length', 80, "Max line length")]
    violation_message = "Line exceeds max length ({0}>{1})"

    def validate(self, line, _commit):
        max_length = self.options['line-length'].value
        urls = re.findall(r'http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+', line)
        if line.startswith('Signed-off-by'):
            return

        if urls:
            return

        if len(line) > max_length:
            return [RuleViolation(self.id, self.violation_message.format(len(line), max_length), line)]

filtered = [x for x in commit.message.body if not x.lower().startswith("signed-off-by") and x != '']
        line_count = len(filtered)
        min_line_count = self.options['min-line-count'].value
        if line_count < min_line_count:
            message = "Body has no content, should at least have {} line.".format(min_line_count)
            return [RuleViolation(self.id, message, line_nr=1)]

class BodyMaxLineCount(CommitRule):
    # A rule MUST have a human friendly name
    name = "body-max-line-count"

    # A rule MUST have an *unique* id, we recommend starting with UC (for User-defined Commit-rule).
    id = "UC1"

    # A rule MAY have an option_spec if its behavior should be configurable.
    options_spec = [IntOption('max-line-count', 3, "Maximum body line count")]

    def validate(self, commit):
        line_count = len(commit.message.body)
        max_line_count = self.options['max-line-count'].value
        if line_count > max_line_count:
            message = "Body contains too many lines ({0} > {1})".format(line_count, max_line_count)
            return [RuleViolation(self.id, message, line_nr=1)]

class SignedOffBy(CommitRule):
    """ This rule will enforce that each commit contains a "Signed-off-by" line.
    We keep things simple here and just check whether the commit body contains a line that starts with "Signed-off-by".
    """

    # A rule MUST have a human friendly name
    name = "body-requires-signed-off-by"