yamllint version 1.1.0

It is more tolerant than 'default'.

MANIFEST.in

@@ -0,0 +1,3 @@
+include LICENSE
+include README.rst
+include docs/*

README.rst

@@ -57,6 +57,9 @@ Usage
 
 .. code:: bash
 
+ # Use a pre-defined lint configuration
+ yamllint -d relaxed file.yml
+
  # Use a custom lint configuration
  yamllint -c ~/myconfig file.yml
 

docs/configuration.rst

@@ -8,7 +8,7 @@ settings can be gathered in a configuration file.
 To use a custom configuration file, either name it ``.yamllint`` in your working
 directory, or use the ``-c`` option:
 
-::
+.. code:: bash
 
  yamllint -c ~/myconfig file.yml
 
@@ -22,6 +22,15 @@ Unless told otherwise, yamllint uses its ``default`` configuration:
 
 Details on rules can be found on :doc:`the rules page <rules>`.
 
+There is another pre-defined configuration named ``relaxed``. As its name
+suggests, it is more tolerant.
+
+It can be chosen using:
+
+.. code:: bash
+
+ yamllint -d relaxed file.yml
+
 Extending the default configuration
 -----------------------------------
 
@@ -63,6 +72,21 @@ strict on block sequences indentation:
    indentation:
      indent-sequences: whatever
 
+Custom configuration without a config file
+------------------------------------------
+
+It is possible -- although not recommended -- to pass custom configuration
+options to yamllint with the ``-d`` (short for ``--config-data``) option.
+
+Its content can either be the name of a pre-defined conf (example: ``default``
+or ``relaxed``) or a serialized YAML object describing the configuration.
+
+For instance:
+
+.. code:: bash
+
+ yamllint -d "{extends: relaxed, rules: {line-length: {max: 120}}}" file.yml
+
 Errors and warnings
 -------------------
 

tests/rules/test_indentation.py

@@ -496,6 +496,87 @@ class IndentationTestCase(RuleTestCase):
                    '        date: 1991\n'
                    '...\n', conf)
 
+    def test_consistent(self):
+        conf = ('indentation: {spaces: consistent,\n'
+                '              indent-sequences: whatever}\n'
+                'document-start: disable\n')
+        self.check('---\n'
+                   'object:\n'
+                   ' k1:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   ' k2: v2\n'
+                   ' k3:\n'
+                   '  - name: Unix\n'
+                   '    date: 1969\n'
+                   '  - name: Linux\n'
+                   '    date: 1991\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   'object:\n'
+                   '  k1:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   '  k2: v2\n'
+                   '  k3:\n'
+                   '  - name: Unix\n'
+                   '    date: 1969\n'
+                   '  - name: Linux\n'
+                   '    date: 1991\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   'object:\n'
+                   '   k1:\n'
+                   '      - a\n'
+                   '      - b\n'
+                   '   k2: v2\n'
+                   '   k3:\n'
+                   '      - name: Unix\n'
+                   '        date: 1969\n'
+                   '      - name: Linux\n'
+                   '        date: 1991\n'
+                   '...\n', conf)
+        self.check('first is not indented:\n'
+                   '  value is indented\n', conf)
+        self.check('first is not indented:\n'
+                   '     value:\n'
+                   '          is indented\n', conf)
+        self.check('- first is already indented:\n'
+                   '    value is indented too\n', conf)
+        self.check('- first is already indented:\n'
+                   '       value:\n'
+                   '            is indented too\n', conf)
+        self.check('- first is already indented:\n'
+                   '       value:\n'
+                   '             is indented too\n', conf, problem=(3, 14))
+        self.check('---\n'
+                   'list one:\n'
+                   '  - 1\n'
+                   '  - 2\n'
+                   '  - 3\n'
+                   'list two:\n'
+                   '    - a\n'
+                   '    - b\n'
+                   '    - c\n', conf, problem=(7, 5))
+        self.check('---\n'
+                   'list one:\n'
+                   '- 1\n'
+                   '- 2\n'
+                   '- 3\n'
+                   'list two:\n'
+                   '  - a\n'
+                   '  - b\n'
+                   '  - c\n', conf)
+        self.check('---\n'
+                   'list one:\n'
+                   ' - 1\n'
+                   ' - 2\n'
+                   ' - 3\n'
+                   'list two:\n'
+                   '- a\n'
+                   '- b\n'
+                   '- c\n', conf)
+
     def test_indent_sequences_whatever(self):
         conf = 'indentation: {spaces: 4, indent-sequences: whatever}'
         self.check('---\n'
@@ -1528,3 +1609,39 @@ class ScalarIndentationTestCase(RuleTestCase):
                    '      paragraph gap, \\n and\n'
                    '       spaces.\n', conf,
                    problem1=(3, 6), problem2=(5, 7), problem3=(6, 8))
+
+    def test_consistent(self):
+        conf = ('indentation: {spaces: consistent,\n'
+                '              check-multi-line-strings: yes}\n'
+                'document-start: disable\n')
+        self.check('multi\n'
+                   'line\n', conf)
+        self.check('multi\n'
+                   ' line\n', conf, problem=(2, 2))
+        self.check('- multi\n'
+                   '  line\n', conf)
+        self.check('- multi\n'
+                   '   line\n', conf, problem=(2, 4))
+        self.check('a key: multi\n'
+                   '  line\n', conf, problem=(2, 3))
+        self.check('a key: multi\n'
+                   '        line\n', conf, problem=(2, 9))
+        self.check('a key:\n'
+                   '  multi\n'
+                   '   line\n', conf, problem=(3, 4))
+        self.check('- C code: void main() {\n'
+                   '              printf("foo");\n'
+                   '          }\n', conf, problem=(2, 15))
+        self.check('- C code:\n'
+                   '    void main() {\n'
+                   '        printf("foo");\n'
+                   '    }\n', conf, problem=(3, 9))
+        self.check('>\n'
+                   '  multi\n'
+                   '  line\n', conf)
+        self.check('>\n'
+                   '     multi\n'
+                   '     line\n', conf)
+        self.check('>\n'
+                   '     multi\n'
+                   '      line\n', conf, problem=(3, 7))

tests/test_config.py

@@ -58,6 +58,53 @@ class SimpleConfigTestCase(unittest.TestCase):
                                   '    max-spaces-after: 1\n'
                                   '    abcdef: yes\n')
 
+    def test_validate_rule_conf(self):
+        class Rule(object):
+            ID = 'fake'
+
+        self.assertEqual(config.validate_rule_conf(Rule, False), False)
+        self.assertEqual(config.validate_rule_conf(Rule, 'disable'), False)
+
+        config.validate_rule_conf(Rule, {'level': 'error'})
+        config.validate_rule_conf(Rule, {'level': 'warning'})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'level': 'warn'})
+
+        Rule.CONF = {'length': int}
+        config.validate_rule_conf(Rule, {'length': 8})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'height': 8})
+
+        Rule.CONF = {'a': bool, 'b': int}
+        config.validate_rule_conf(Rule, {'a': True, 'b': 0})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'a': True})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'b': 0})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'a': 1, 'b': 0})
+
+        Rule.CONF = {'choice': (True, 88, 'str')}
+        config.validate_rule_conf(Rule, {'choice': True})
+        config.validate_rule_conf(Rule, {'choice': 88})
+        config.validate_rule_conf(Rule, {'choice': 'str'})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'choice': False})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'choice': 99})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'choice': 'abc'})
+
+        Rule.CONF = {'choice': (int, 'hardcoded')}
+        config.validate_rule_conf(Rule, {'choice': 42})
+        config.validate_rule_conf(Rule, {'choice': 'hardcoded'})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'choice': False})
+        self.assertRaises(config.YamlLintConfigError,
+                          config.validate_rule_conf, Rule, {'choice': 'abc'})
+
 
 class ExtendedConfigTestCase(unittest.TestCase):
     def test_extend_add_rule(self):

tests/test_linter.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import io
+
+import unittest
+
+from yamllint.config import YamlLintConfig
+from yamllint import linter
+
+
+class LinterTestCase(unittest.TestCase):
+    def fake_config(self):
+        return YamlLintConfig('extends: default')
+
+    def test_run_on_string(self):
+        linter.run('test: document', self.fake_config())
+
+    def test_run_on_bytes(self):
+        linter.run(b'test: document', self.fake_config())
+
+    def test_run_on_unicode(self):
+        linter.run(u'test: document', self.fake_config())
+
+    def test_run_on_stream(self):
+        linter.run(io.StringIO(u'hello'), self.fake_config())
+
+    def test_run_on_int(self):
+        self.assertRaises(TypeError, linter.run, 42, self.fake_config())
+
+    def test_run_on_list(self):
+        self.assertRaises(TypeError, linter.run,
+                          ['h', 'e', 'l', 'l', 'o'], self.fake_config())

tests/test_spec_examples.py

@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+from io import open
 import os
 
 from tests.common import RuleTestCase
@@ -120,7 +121,8 @@ conf_overrides = {
     'example-10.2': ('indentation: {indent-sequences: no}\n'),
 }
 
-files = os.listdir('tests/yaml-1.2-spec-examples')
+files = os.listdir(os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                                'yaml-1.2-spec-examples'))
 assert len(files) == 132
 
 
@@ -178,7 +180,7 @@ for file in files:
     if file in pyyaml_blacklist:
         continue
 
-    with open('tests/yaml-1.2-spec-examples/' + file) as f:
+    with open('tests/yaml-1.2-spec-examples/' + file, encoding='utf-8') as f:
         conf = conf_general + conf_overrides.get(file, '')
         setattr(SpecificationTestCase, 'test_' + file,
                 _gen_test(f.read(), conf))

yamllint/__init__.py

@@ -22,7 +22,7 @@ indentation, etc."""
 
 
 APP_NAME = 'yamllint'
-APP_VERSION = '1.0.1'
+APP_VERSION = '1.1.0'
 APP_DESCRIPTION = __doc__
 
 __author__ = u'Adrien Vergé'

yamllint/cli.py

@@ -66,8 +66,11 @@ def run(argv=None):
                                      description=APP_DESCRIPTION)
     parser.add_argument('files', metavar='FILE_OR_DIR', nargs='+',
                         help='files to check')
-    parser.add_argument('-c', '--config', dest='config_file', action='store',
+    parser.add_argument('-c', '--config-file', dest='config_file',
-                        help='path to a custom configuration')
+                        action='store', help='path to a custom configuration')
+    parser.add_argument('-d', '--config-data', dest='config_data',
+                        action='store',
+                        help='custom configuration (as YAML source)')
     parser.add_argument('-f', '--format',
                         choices=('parsable', 'standard'), default='standard',
                         help='format for parsing output')
@@ -78,8 +81,17 @@ def run(argv=None):
 
     args = parser.parse_args(argv)
 
+    if args.config_file is not None and args.config_data is not None:
+        print('Options --config-file and --config-data cannot be used '
+              'simultaneously.', file=sys.stderr)
+        sys.exit(-1)
+
     try:
-        if args.config_file is not None:
+        if args.config_data is not None:
+            if ':' not in args.config_data:
+                args.config_data = 'extends: ' + args.config_data
+            conf = YamlLintConfig(content=args.config_data)
+        elif args.config_file is not None:
             conf = YamlLintConfig(file=args.config_file)
         elif os.path.isfile('.yamllint'):
             conf = YamlLintConfig(file='.yamllint')

yamllint/conf/relaxed.yml

@@ -0,0 +1,29 @@
+---
+
+extends: default
+
+rules:
+  braces:
+    level: warning
+    max-spaces-inside: 1
+  brackets:
+    level: warning
+    max-spaces-inside: 1
+  colons:
+    level: warning
+  commas:
+    level: warning
+  comments: disable
+  comments-indentation: disable
+  document-end: disable
+  document-start: disable
+  empty-lines:
+    level: warning
+  hyphens: disable
+  indentation:
+    spaces: consistent
+    indent-sequences: whatever
+    check-multi-line-strings: no
+  line-length:
+    level: warning
+    max: 100

yamllint/config.py

@@ -100,7 +100,8 @@ def validate_rule_conf(rule, conf):
                     'invalid config: unknown option "%s" for rule "%s"' %
                     (optkey, rule.ID))
             if type(options[optkey]) == tuple:
-                if conf[optkey] not in options[optkey]:
+                if (conf[optkey] not in options[optkey] and
+                        type(conf[optkey]) not in options[optkey]):
                     raise YamlLintConfigError(
                         'invalid config: option "%s" of "%s" should be in %s'
                         % (optkey, rule.ID, options[optkey]))

yamllint/linter.py

@@ -128,7 +128,7 @@ def run(input, conf):
     :param input: buffer, string or stream to read from
     :param conf: yamllint configuration object
     """
-    if type(input) == str:
+    if type(input) in (type(b''), type(u'')):  # compat with Python 2 & 3
         return _run(input, conf)
     elif hasattr(input, 'read'):  # Python 2's file or Python 3's io.IOBase
         # We need to have everything in memory to parse correctly

yamllint/rules/indentation.py

@@ -19,7 +19,10 @@ Use this rule to control the indentation.
 
 .. rubric:: Options
 
-* ``spaces`` defines the number of spaces that represent an indentation level.
+* ``spaces`` defines the indentation width, in spaces. Set either to an integer
+  (e.g. ``2`` or ``4``, representing the number of spaces in an indentation
+  level) or to ``consistent`` to allow any number, as long as it remains the
+  same within the file.
 * ``indent-sequences`` defines whether block sequences should be indented or
   not (when in a mapping, this indentation is not mandatory -- some people
   perceive the ``-`` as part of the indentation). Possible values: ``yes``,
@@ -73,6 +76,28 @@ Use this rule to control the indentation.
         - haystack:
             needle
 
+#. With ``indentation: {spaces: consistent}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    history:
+       - name: Unix
+         date: 1969
+       - name: Linux
+         date: 1991
+    nest:
+       recurse:
+          - haystack:
+               needle
+
+   the following code snippet would **FAIL**:
+   ::
+
+    some:
+      Russian:
+          dolls
+
 #. With ``indentation: {spaces: 2, indent-sequences: no}``
 
    the following code snippet would **PASS**:
@@ -150,7 +175,7 @@ from yamllint.rules.common import is_explicit_key, get_real_end_line
 
 ID = 'indentation'
 TYPE = 'token'
-CONF = {'spaces': int,
+CONF = {'spaces': (int, 'consistent'),
         'indent-sequences': (True, False, 'whatever'),
         'check-multi-line-strings': bool}
 
@@ -174,45 +199,53 @@ def check_scalar_indentation(conf, token, context):
     if token.start_mark.line == token.end_mark.line:
         return
 
-    if token.plain:
+    def compute_expected_indent(found_indent):
-        expected_indent = token.start_mark.column
+        def detect_indent(base_indent):
-    elif token.style in ('"', "'"):
+            if type(context['spaces']) is not int:
-        expected_indent = token.start_mark.column + 1
+                context['spaces'] = found_indent - base_indent
-    elif token.style in ('>', '|'):
+            return base_indent + context['spaces']
-        if context['stack'][-1].type == B_SEQ:
+
-            # - >
+        if token.plain:
-            #     multi
+            return token.start_mark.column
-            #     line
+        elif token.style in ('"', "'"):
-            expected_indent = token.start_mark.column + conf['spaces']
+            return token.start_mark.column + 1
-        elif context['stack'][-1].type == KEY:
+        elif token.style in ('>', '|'):
-            assert context['stack'][-1].explicit_key
+            if context['stack'][-1].type == B_SEQ:
-            # - ? >
+                # - >
-            #       multi-line
+                #     multi
-            #       key
+                #     line
-            #   : >
+                return detect_indent(token.start_mark.column)
-            #       multi-line
+            elif context['stack'][-1].type == KEY:
-            #       value
+                assert context['stack'][-1].explicit_key
-            expected_indent = token.start_mark.column + conf['spaces']
+                # - ? >
-        elif context['stack'][-1].type == VAL:
+                #       multi-line
-            if token.start_mark.line + 1 > context['cur_line']:
+                #       key
-                # - key:
-                #     >
-                #       multi
-                #       line
-                expected_indent = context['stack'][-1].indent + conf['spaces']
-            elif context['stack'][-2].explicit_key:
-                # - ? key
                 #   : >
                 #       multi-line
                 #       value
-                expected_indent = token.start_mark.column + conf['spaces']
+                return detect_indent(token.start_mark.column)
+            elif context['stack'][-1].type == VAL:
+                if token.start_mark.line + 1 > context['cur_line']:
+                    # - key:
+                    #     >
+                    #       multi
+                    #       line
+                    return detect_indent(context['stack'][-1].indent)
+                elif context['stack'][-2].explicit_key:
+                    # - ? key
+                    #   : >
+                    #       multi-line
+                    #       value
+                    return detect_indent(token.start_mark.column)
+                else:
+                    # - key: >
+                    #     multi
+                    #     line
+                    return detect_indent(context['stack'][-2].indent)
             else:
-                # - key: >
+                return detect_indent(context['stack'][-1].indent)
-                #     multi
+
-                #     line
+    expected_indent = None
-                expected_indent = context['stack'][-2].indent + conf['spaces']
-        else:
-            expected_indent = context['stack'][-1].indent + conf['spaces']
 
     line_no = token.start_mark.line + 1
 
@@ -230,6 +263,9 @@ def check_scalar_indentation(conf, token, context):
         if token.start_mark.buffer[line_start + indent] == '\n':
             continue
 
+        if expected_indent is None:
+            expected_indent = compute_expected_indent(indent)
+
         if indent != expected_indent:
             yield LintProblem(line_no, indent + 1,
                               'wrong indentation: expected %d but found %d' %
@@ -240,6 +276,7 @@ def check(conf, token, prev, next, nextnext, context):
     if 'stack' not in context:
         context['stack'] = [Parent(ROOT, 0)]
         context['cur_line'] = -1
+        context['spaces'] = conf['spaces']
 
     # Step 1: Lint
 
@@ -250,6 +287,12 @@ def check(conf, token, prev, next, nextnext, context):
     first_in_line = (is_visible and
                      token.start_mark.line + 1 > context['cur_line'])
 
+    def detect_indent(next):
+        if type(context['spaces']) is not int:
+            context['spaces'] = (next.start_mark.column -
+                                 context['stack'][-1].indent)
+        return context['spaces']
+
     if first_in_line:
         found_indentation = token.start_mark.column
         expected = context['stack'][-1].indent
@@ -260,7 +303,7 @@ def check(conf, token, prev, next, nextnext, context):
         elif (context['stack'][-1].type == KEY and
                 context['stack'][-1].explicit_key and
                 not isinstance(token, yaml.ValueToken)):
-            expected += conf['spaces']
+            expected += detect_indent(token)
 
         if found_indentation != expected:
             yield LintProblem(token.start_mark.line + 1, found_indentation + 1,
@@ -294,7 +337,7 @@ def check(conf, token, prev, next, nextnext, context):
             #   - ?
             #       a
             #     : 1
-            indent = token.start_mark.column + conf['spaces']
+            indent = token.start_mark.column + detect_indent(next)
 
         context['stack'].append(Parent(B_MAP, indent))
 
@@ -306,7 +349,7 @@ def check(conf, token, prev, next, nextnext, context):
             #   - {
             #     a: 1, b: 2
             #   }
-            indent = context['cur_line_indent'] + conf['spaces']
+            indent = context['cur_line_indent'] + detect_indent(next)
 
         context['stack'].append(Parent(F_MAP, indent,
                                        line_indent=context['cur_line_indent']))
@@ -340,7 +383,7 @@ def check(conf, token, prev, next, nextnext, context):
             #   -
             #     key:
             #       value
-            indent = token.start_mark.column + conf['spaces']
+            indent = token.start_mark.column + detect_indent(next)
 
         context['stack'].append(Parent(B_ENT, indent))
 
@@ -352,7 +395,7 @@ def check(conf, token, prev, next, nextnext, context):
             #   - [
             #   a, b
             # ]
-            indent = context['cur_line_indent'] + conf['spaces']
+            indent = context['cur_line_indent'] + detect_indent(next)
 
         context['stack'].append(Parent(F_SEQ, indent,
                                        line_indent=context['cur_line_indent']))
@@ -390,7 +433,7 @@ def check(conf, token, prev, next, nextnext, context):
                 #   ? k
                 #   :
                 #     value
-                indent = context['stack'][-1].indent + conf['spaces']
+                indent = context['stack'][-1].indent + detect_indent(next)
             elif next.start_mark.line == prev.start_mark.line:
                 #   k: value
                 indent = next.start_mark.column
@@ -404,7 +447,7 @@ def check(conf, token, prev, next, nextnext, context):
                 if conf['indent-sequences'] is False:
                     indent = context['stack'][-1].indent
                 elif conf['indent-sequences'] is True:
-                    indent = context['stack'][-1].indent + conf['spaces']
+                    indent = context['stack'][-1].indent + detect_indent(next)
                 else:  # 'whatever'
                     if next.start_mark.column == context['stack'][-1].indent:
                         #   key:
@@ -415,11 +458,12 @@ def check(conf, token, prev, next, nextnext, context):
                         #   key:
                         #     - e1
                         #     - e2
-                        indent = context['stack'][-1].indent + conf['spaces']
+                        indent = (context['stack'][-1].indent +
+                                  detect_indent(next))
             else:
                 #   k:
                 #     value
-                indent = context['stack'][-1].indent + conf['spaces']
+                indent = context['stack'][-1].indent + detect_indent(next)
 
             context['stack'].append(Parent(VAL, indent))