190 lines
7.3 KiB
Python
190 lines
7.3 KiB
Python
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"""
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pygments.lexers.varnish
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~~~~~~~~~~~~~~~~~~~~~~~
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Lexers for Varnish configuration
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:copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, include, bygroups, using, this, \
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inherit, words
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Literal, Whitespace
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__all__ = ['VCLLexer', 'VCLSnippetLexer']
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class VCLLexer(RegexLexer):
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"""
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For Varnish Configuration Language (VCL).
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"""
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name = 'VCL'
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aliases = ['vcl']
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filenames = ['*.vcl']
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mimetypes = ['text/x-vclsrc']
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url = 'https://www.varnish-software.com/developers/tutorials/varnish-configuration-language-vcl'
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version_added = '2.2'
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def analyse_text(text):
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# If the very first line is 'vcl 4.0;' it's pretty much guaranteed
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# that this is VCL
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if text.startswith('vcl 4.0;'):
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return 1.0
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# Skip over comments and blank lines
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# This is accurate enough that returning 0.9 is reasonable.
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# Almost no VCL files start without some comments.
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elif '\nvcl 4.0;' in text[:1000]:
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return 0.9
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tokens = {
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'probe': [
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include('whitespace'),
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include('comments'),
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(r'(\.\w+)(\s*=\s*)([^;]*)(;)',
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bygroups(Name.Attribute, Operator, using(this), Punctuation)),
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(r'\}', Punctuation, '#pop'),
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],
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'acl': [
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include('whitespace'),
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include('comments'),
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(r'[!/]+', Operator),
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(r';', Punctuation),
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(r'\d+', Number),
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(r'\}', Punctuation, '#pop'),
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],
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'backend': [
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include('whitespace'),
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(r'(\.probe)(\s*=\s*)(\w+)(;)',
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bygroups(Name.Attribute, Operator, Name.Variable.Global, Punctuation)),
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(r'(\.probe)(\s*=\s*)(\{)',
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bygroups(Name.Attribute, Operator, Punctuation), 'probe'),
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(r'(\.\w+\b)(\s*=\s*)([^;\s]*)(\s*;)',
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bygroups(Name.Attribute, Operator, using(this), Punctuation)),
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(r'\{', Punctuation, '#push'),
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(r'\}', Punctuation, '#pop'),
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],
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'statements': [
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(r'(\d\.)?\d+[sdwhmy]', Literal.Date),
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(r'(\d\.)?\d+ms', Literal.Date),
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(r'(vcl_pass|vcl_hash|vcl_hit|vcl_init|vcl_backend_fetch|vcl_pipe|'
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r'vcl_backend_response|vcl_synth|vcl_deliver|vcl_backend_error|'
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r'vcl_fini|vcl_recv|vcl_purge|vcl_miss)\b', Name.Function),
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(r'(pipe|retry|hash|synth|deliver|purge|abandon|lookup|pass|fail|ok|'
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r'miss|fetch|restart)\b', Name.Constant),
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(r'(beresp|obj|resp|req|req_top|bereq)\.http\.[a-zA-Z_-]+\b', Name.Variable),
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(words((
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'obj.status', 'req.hash_always_miss', 'beresp.backend', 'req.esi_level',
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'req.can_gzip', 'beresp.ttl', 'obj.uncacheable', 'req.ttl', 'obj.hits',
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'client.identity', 'req.hash_ignore_busy', 'obj.reason', 'req.xid',
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'req_top.proto', 'beresp.age', 'obj.proto', 'obj.age', 'local.ip',
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'beresp.uncacheable', 'req.method', 'beresp.backend.ip', 'now',
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'obj.grace', 'req.restarts', 'beresp.keep', 'req.proto', 'resp.proto',
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'bereq.xid', 'bereq.between_bytes_timeout', 'req.esi',
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'bereq.first_byte_timeout', 'bereq.method', 'bereq.connect_timeout',
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'beresp.do_gzip', 'resp.status', 'beresp.do_gunzip',
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'beresp.storage_hint', 'resp.is_streaming', 'beresp.do_stream',
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'req_top.method', 'bereq.backend', 'beresp.backend.name', 'beresp.status',
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'req.url', 'obj.keep', 'obj.ttl', 'beresp.reason', 'bereq.retries',
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'resp.reason', 'bereq.url', 'beresp.do_esi', 'beresp.proto', 'client.ip',
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'bereq.proto', 'server.hostname', 'remote.ip', 'req.backend_hint',
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'server.identity', 'req_top.url', 'beresp.grace', 'beresp.was_304',
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'server.ip', 'bereq.uncacheable'), suffix=r'\b'),
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Name.Variable),
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(r'[!%&+*\-,/<.}{>=|~]+', Operator),
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(r'[();]', Punctuation),
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(r'[,]+', Punctuation),
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(words(('hash_data', 'regsub', 'regsuball', 'if', 'else',
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'elsif', 'elif', 'synth', 'synthetic', 'ban',
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'return', 'set', 'unset', 'import', 'include', 'new',
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'rollback', 'call'), suffix=r'\b'),
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Keyword),
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(r'storage\.\w+\.\w+\b', Name.Variable),
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(words(('true', 'false')), Name.Builtin),
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(r'\d+\b', Number),
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(r'(backend)(\s+\w+)(\s*\{)',
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bygroups(Keyword, Name.Variable.Global, Punctuation), 'backend'),
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(r'(probe\s)(\s*\w+\s)(\{)',
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bygroups(Keyword, Name.Variable.Global, Punctuation), 'probe'),
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(r'(acl\s)(\s*\w+\s)(\{)',
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bygroups(Keyword, Name.Variable.Global, Punctuation), 'acl'),
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(r'(vcl )(4.0)(;)$',
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bygroups(Keyword.Reserved, Name.Constant, Punctuation)),
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(r'(sub\s+)([a-zA-Z]\w*)(\s*\{)',
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bygroups(Keyword, Name.Function, Punctuation)),
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(r'([a-zA-Z_]\w*)'
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r'(\.)'
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r'([a-zA-Z_]\w*)'
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r'(\s*\(.*\))',
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bygroups(Name.Function, Punctuation, Name.Function, using(this))),
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(r'[a-zA-Z_]\w*', Name),
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],
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'comment': [
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(r'[^*/]+', Comment.Multiline),
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(r'/\*', Comment.Multiline, '#push'),
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(r'\*/', Comment.Multiline, '#pop'),
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(r'[*/]', Comment.Multiline),
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],
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'comments': [
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(r'#.*$', Comment),
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(r'/\*', Comment.Multiline, 'comment'),
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(r'//.*$', Comment),
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],
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'string': [
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(r'"', String, '#pop'),
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(r'[^"\n]+', String), # all other characters
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],
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'multistring': [
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(r'[^"}]', String),
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(r'"\}', String, '#pop'),
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(r'["}]', String),
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],
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'whitespace': [
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(r'L?"', String, 'string'),
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(r'\{"', String, 'multistring'),
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(r'\n', Whitespace),
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(r'\s+', Whitespace),
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(r'\\\n', Text), # line continuation
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],
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'root': [
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include('whitespace'),
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include('comments'),
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include('statements'),
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(r'\s+', Whitespace),
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],
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}
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class VCLSnippetLexer(VCLLexer):
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"""
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For Varnish Configuration Language snippets.
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"""
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name = 'VCLSnippets'
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aliases = ['vclsnippets', 'vclsnippet']
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mimetypes = ['text/x-vclsnippet']
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filenames = []
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url = 'https://www.varnish-software.com/developers/tutorials/varnish-configuration-language-vcl'
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version_added = '2.2'
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def analyse_text(text):
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# override method inherited from VCLLexer
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return 0
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tokens = {
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'snippetspre': [
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(r'\.\.\.+', Comment),
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(r'(bereq|req|req_top|resp|beresp|obj|client|server|local|remote|'
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r'storage)($|\.\*)', Name.Variable),
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],
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'snippetspost': [
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(r'(backend)\b', Keyword.Reserved),
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],
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'root': [
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include('snippetspre'),
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inherit,
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include('snippetspost'),
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],
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}
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