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hosts.sublime-syntax
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%YAML 1.2
---
# See http://www.sublimetext.com/docs/3/syntax.html
name: Hosts File
file_extensions:
- hosts
scope: text.hosts
variables:
zero_to_255: (?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9][0-9])|(?:[1-9][0-9])|[0-9])
sixteen_to_31: (?:1[6-9]|2[0-9]|3[0-1])
ipv4: (?:(?:{{zero_to_255}}\.){3}{{zero_to_255}})
ipv4_private: |-
(?x:
10(?:\.{{zero_to_255}}){3} # 10.x.x.x
|172\.{{sixteen_to_31}}(?:\.{{zero_to_255}}){2} # 172.16.0.0 - 172.31.255.255
|192\.168(?:\.{{zero_to_255}}){2} # 192.168.x.x
)
ipv4_loopback: 127(?:\.{{zero_to_255}}){3} # 127.x.x.x
ipv6: |-
(?xi:
::(?:ffff(?::0{1,4}){0,1}:){0,1}{{ipv4}} # ::255.255.255.255 ::ffff:255.255.255.255 ::ffff:0:255.255.255.255 (IPv4-mapped IPv6 addresses and IPv4-translated addresses)
|(?:[0-9a-f]{1,4}:){1,4}:{{ipv4}} # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address)
|fe80:(?::[0-9a-f]{1,4}){0,4}%[0-9a-z]{1,} # fe80::7:8%eth0 fe80::7:8%1 (link-local IPv6 addresses with zone index)
|(?:[0-9a-f]{1,4}:){7,7} [0-9a-f]{1,4} # 1:2:3:4:5:6:7:8
| [0-9a-f]{1,4}: (?::[0-9a-f]{1,4}){1,6} # 1::3:4:5:6:7:8 1::3:4:5:6:7:8 1::8
|(?:[0-9a-f]{1,4}:){1,2}(?::[0-9a-f]{1,4}){1,5} # 1::4:5:6:7:8 1:2::4:5:6:7:8 1:2::8
|(?:[0-9a-f]{1,4}:){1,3}(?::[0-9a-f]{1,4}){1,4} # 1::5:6:7:8 1:2:3::5:6:7:8 1:2:3::8
|(?:[0-9a-f]{1,4}:){1,4}(?::[0-9a-f]{1,4}){1,3} # 1::6:7:8 1:2:3:4::6:7:8 1:2:3:4::8
|(?:[0-9a-f]{1,4}:){1,5}(?::[0-9a-f]{1,4}){1,2} # 1::7:8 1:2:3:4:5::7:8 1:2:3:4:5::8
|(?:[0-9a-f]{1,4}:){1,6} :[0-9a-f]{1,4} # 1::8 1:2:3:4:5:6::8 1:2:3:4:5:6::8
|(?:[0-9a-f]{1,4}:){1,7} : # 1:: 1:2:3:4:5:6:7::
|:(?:(?::[0-9a-f]{1,4}){1,7}|:) # ::2:3:4:5:6:7:8 ::2:3:4:5:6:7:8 ::8 ::
)
ipv6_private: |-
(?xi:f[cd]\h\h:(?:
(?:[0-9a-f]{1,4}:){6} [0-9a-f]{1,4}
|(?:[0-9a-f]{1,4}:)? (?::[0-9a-f]{1,4}){1,5}
|(?:[0-9a-f]{1,4}:){0,2}(?::[0-9a-f]{1,4}){1,4}
|(?:[0-9a-f]{1,4}:){0,3}(?::[0-9a-f]{1,4}){1,3}
|(?:[0-9a-f]{1,4}:){0,4}(?::[0-9a-f]{1,4}){1,2}
|(?:[0-9a-f]{1,4}:){0,5} :[0-9a-f]{1,4}
|(?:[0-9a-f]{1,4}:){0,6} :
))
hostname_char: '[\w-]'
hostname_segment: (?:\w{{hostname_char}}{1,61}\w|\w\w?)
hostname_break: (?=[ \t#]|$)
contexts:
# The prototype context is prepended to all contexts except ones that set
# meta_include_prototype: false.
prototype:
- include: comments
main:
- match: ^(?=[ \t]*\S)
push:
- meta_scope: meta.line.ip-mapping.hosts
- match: (?=\n|\s*#)
pop: true
- include: loopback
- include: private
- include: public
- match: \S+
# Consume non-IP lines to prevent highlighting.
# Less destructive than `invalid.illegal`, especially while typing
loopback:
- match: \B::1(?=\s|$)
scope: meta.ip-address.v6.hosts constant.language.hosts
push: expect-hostnames
- match: \b{{ipv4_loopback}}(?=\s|$)
scope: meta.ip-address.v4.hosts constant.language.hosts
push: expect-hostnames
private:
- match: \b{{ipv4_private}}(?=\s|$)
scope: meta.ip-address.v4.hosts support.constant.built-in.hosts
push: expect-hostnames
- match: \b{{ipv6_private}}(?=\s|$)
scope: meta.ip-address.v6.hosts support.constant.built-in.hosts
push: expect-hostnames
public:
- match: \b{{ipv4}}(?=\s|$)
scope: meta.ip-address.v4.hosts constant.numeric.integer.decimal.hosts
push: expect-hostnames
- match: (?i:fe80:(?::[0-9a-f]{1,4}){0,4}(%)([0-9a-z]+))(?=\s|$)
scope: meta.ip-address.v6.hosts constant.numeric.integer.hexadecimal.hosts
captures:
1: punctuation.separator.mapping.hosts
2: meta.link-local.hosts entity.name.label.hosts
push: expect-hostnames
- match: '{{ipv6}}(?=\s|$)'
scope: meta.ip-address.v6.hosts constant.numeric.integer.hexadecimal.hosts
push: expect-hostnames
expect-hostnames:
- match: (?=\n|\s*#)
pop: true
- match: '[ \t]([.-])'
captures:
1: invalid.illegal.hostname.leading-character.hosts
- match: ([\w.-]{254,})(\.)?{{hostname_break}}
captures:
1: invalid.illegal.hostname.too-long.hosts
2: punctuation.terminator.hosts
- match: (?=\w)
push: in-hostname
in-hostname:
- meta_content_scope: meta.hostname.hosts string.unquoted.hosts
- match: '-(?=\n|$)'
scope: invalid.illegal.hostname.trailing-character.hosts
pop: true
- match: '-(?=[ \t#])'
scope: invalid.illegal.hostname.trailing-character.hosts
- match: (?:\.{2,}|\.-|-\.)
scope: invalid.illegal.hostname.sequence.hosts
- match: '{{hostname_char}}{64,}'
scope: invalid.illegal.hostname.too-long.hosts
# Punycode segments
- match: \b(xn--)(?:{{hostname_char}}+(-))?(\w+)\b(?!\.?{{hostname_break}})
scope: meta.string.subdomain.hosts meta.punycode.hosts
captures:
1: punctuation.definition.string.begin.punycode.hosts
2: punctuation.separator.mapping.hosts
3: constant.character.injection.hosts
- match: \b((xn--)(?:{{hostname_char}}+(-))?(\w+))\b(\.)?{{hostname_break}}
scope: meta.hostname.hosts string.unquoted.hosts
captures:
1: meta.string.tld.hosts meta.punycode.hosts
2: punctuation.definition.string.begin.punycode.hosts
3: punctuation.separator.mapping.hosts
4: constant.character.injection.hosts
5: punctuation.terminator.hosts
pop: true
- match: \b(xn--)(?:{{hostname_char}}+(-))?(\w+)\b{{hostname_break}}
scope: meta.hostname.hosts string.unquoted.hosts meta.punycode.hosts
captures:
1: punctuation.definition.string.begin.punycode.hosts
2: punctuation.separator.mapping.hosts
3: constant.character.injection.hosts
4: punctuation.terminator.hosts
pop: true
# Normal segments
- match: '{{hostname_segment}}\b(?!\.?{{hostname_break}})'
scope: meta.string.subdomain.hosts
- match: '({{hostname_segment}})(\.){{hostname_break}}'
scope: meta.hostname.hosts string.unquoted.hosts
captures:
1: meta.string.tld.hosts
2: punctuation.terminator.hosts
pop: true
- match: '{{hostname_segment}}{{hostname_break}}'
scope: meta.hostname.hosts string.unquoted.hosts
pop: true
# Segment separators
- match: \.
scope: punctuation.separator.sequence.hosts
# Invalid hostname characters
- match: '[^\w.-]'
scope: invalid.illegal.hostname.character.hosts
comments:
- match: '#'
scope: punctuation.definition.comment.hosts
push:
- meta_scope: comment.line.number-sign.hosts
- match: $\n?
pop: true