Upstream's implementation has been merged a while ago and is the preferred way to set fields, as it is the only one compatible with upstream and is more user-friendly. This commit deletes the legacy glitch-soc FrontMatter functionality in order to clean up the code and make it easier to maintain.master
Thibaut Girka
6 years ago
committed by
ThibG
parent
c4bec9263c
commit
88b593a63f
@ -1,223 +0,0 @@ |
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# frozen_string_literal: true |
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require 'singleton' |
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# See also `app/javascript/features/account/util/bio_metadata.js`. |
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class FrontmatterHandler |
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include Singleton |
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# CONVENIENCE FUNCTIONS # |
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def self.unirex(str) |
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Regexp.new str, Regexp::MULTILINE |
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end |
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def self.rexstr(exp) |
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'(?:' + exp.source + ')' |
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end |
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# CHARACTER CLASSES # |
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DOCUMENT_START = /^/ |
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DOCUMENT_END = /$/ |
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ALLOWED_CHAR = # c-printable` in the YAML 1.2 spec. |
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/[\t\n\r\u{20}-\u{7e}\u{85}\u{a0}-\u{d7ff}\u{e000}-\u{fffd}\u{10000}-\u{10ffff}]/u |
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WHITE_SPACE = /[ \t]/ |
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INDENTATION = / */ |
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LINE_BREAK = /\r?\n|\r|<br\s*\/?>/ |
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ESCAPE_CHAR = /[0abt\tnvfre "\/\\N_LP]/ |
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HEXADECIMAL_CHARS = /[0-9a-fA-F]/ |
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INDICATOR = /[-?:,\[\]{}&#*!|>'"%@`]/ |
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FLOW_CHAR = /[,\[\]{}]/ |
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# NEGATED CHARACTER CLASSES # |
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NOT_WHITE_SPACE = unirex '(?!' + rexstr(WHITE_SPACE) + ').' |
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NOT_LINE_BREAK = unirex '(?!' + rexstr(LINE_BREAK) + ').' |
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NOT_INDICATOR = unirex '(?!' + rexstr(INDICATOR) + ').' |
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NOT_FLOW_CHAR = unirex '(?!' + rexstr(FLOW_CHAR) + ').' |
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NOT_ALLOWED_CHAR = unirex '(?!' + rexstr(ALLOWED_CHAR) + ').' |
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# BASIC CONSTRUCTS # |
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ANY_WHITE_SPACE = unirex rexstr(WHITE_SPACE) + '*' |
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ANY_ALLOWED_CHARS = unirex rexstr(ALLOWED_CHAR) + '*' |
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NEW_LINE = unirex( |
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rexstr(ANY_WHITE_SPACE) + rexstr(LINE_BREAK) |
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) |
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SOME_NEW_LINES = unirex( |
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'(?:' + rexstr(ANY_WHITE_SPACE) + rexstr(LINE_BREAK) + ')+' |
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) |
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POSSIBLE_STARTS = unirex( |
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rexstr(DOCUMENT_START) + rexstr(/<p[^<>]*>/) + '?' |
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) |
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POSSIBLE_ENDS = unirex( |
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rexstr(SOME_NEW_LINES) + '|' + |
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rexstr(DOCUMENT_END) + '|' + |
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rexstr(/<\/p>/) |
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) |
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CHARACTER_ESCAPE = unirex( |
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rexstr(/\\/) + |
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'(?:' + |
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rexstr(ESCAPE_CHAR) + '|' + |
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rexstr(/x/) + rexstr(HEXADECIMAL_CHARS) + '{2}' + '|' + |
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rexstr(/u/) + rexstr(HEXADECIMAL_CHARS) + '{4}' + '|' + |
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rexstr(/U/) + rexstr(HEXADECIMAL_CHARS) + '{8}' + |
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')' |
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) |
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ESCAPED_CHAR = unirex( |
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rexstr(/(?!["\\])/) + rexstr(NOT_LINE_BREAK) + '|' + |
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rexstr(CHARACTER_ESCAPE) |
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) |
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ANY_ESCAPED_CHARS = unirex( |
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rexstr(ESCAPED_CHAR) + '*' |
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) |
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ESCAPED_APOS = unirex( |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + rexstr(/[^']|''/) |
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) |
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ANY_ESCAPED_APOS = unirex( |
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rexstr(ESCAPED_APOS) + '*' |
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) |
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FIRST_KEY_CHAR = unirex( |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + |
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'(?=' + rexstr(NOT_WHITE_SPACE) + ')' + |
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rexstr(NOT_INDICATOR) + '|' + |
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rexstr(/[?:-]/) + |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + |
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'(?=' + rexstr(NOT_WHITE_SPACE) + ')' + |
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'(?=' + rexstr(NOT_FLOW_CHAR) + ')' |
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) |
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FIRST_VALUE_CHAR = unirex( |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + |
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'(?=' + rexstr(NOT_WHITE_SPACE) + ')' + |
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rexstr(NOT_INDICATOR) + '|' + |
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rexstr(/[?:-]/) + |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + |
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'(?=' + rexstr(NOT_WHITE_SPACE) + ')' |
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# Flow indicators are allowed in values. |
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) |
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LATER_KEY_CHAR = unirex( |
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rexstr(WHITE_SPACE) + '|' + |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + |
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'(?=' + rexstr(NOT_WHITE_SPACE) + ')' + |
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'(?=' + rexstr(NOT_FLOW_CHAR) + ')' + |
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rexstr(/[^:#]#?/) + '|' + |
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rexstr(/:/) + '(?=' + rexstr(NOT_WHITE_SPACE) + ')' |
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) |
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LATER_VALUE_CHAR = unirex( |
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rexstr(WHITE_SPACE) + '|' + |
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'(?=' + rexstr(NOT_LINE_BREAK) + ')' + |
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'(?=' + rexstr(NOT_WHITE_SPACE) + ')' + |
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# Flow indicators are allowed in values. |
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rexstr(/[^:#]#?/) + '|' + |
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rexstr(/:/) + '(?=' + rexstr(NOT_WHITE_SPACE) + ')' |
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) |
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# YAML CONSTRUCTS # |
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YAML_START = unirex( |
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rexstr(ANY_WHITE_SPACE) + rexstr(/---/) |
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) |
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YAML_END = unirex( |
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rexstr(ANY_WHITE_SPACE) + rexstr(/(?:---|\.\.\.)/) |
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) |
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YAML_LOOKAHEAD = unirex( |
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'(?=' + |
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rexstr(YAML_START) + |
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rexstr(ANY_ALLOWED_CHARS) + rexstr(NEW_LINE) + |
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rexstr(YAML_END) + rexstr(POSSIBLE_ENDS) + |
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')' |
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) |
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YAML_DOUBLE_QUOTE = unirex( |
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rexstr(/"/) + rexstr(ANY_ESCAPED_CHARS) + rexstr(/"/) |
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) |
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YAML_SINGLE_QUOTE = unirex( |
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rexstr(/'/) + rexstr(ANY_ESCAPED_APOS) + rexstr(/'/) |
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) |
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YAML_SIMPLE_KEY = unirex( |
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rexstr(FIRST_KEY_CHAR) + rexstr(LATER_KEY_CHAR) + '*' |
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) |
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YAML_SIMPLE_VALUE = unirex( |
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rexstr(FIRST_VALUE_CHAR) + rexstr(LATER_VALUE_CHAR) + '*' |
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) |
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YAML_KEY = unirex( |
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rexstr(YAML_DOUBLE_QUOTE) + '|' + |
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rexstr(YAML_SINGLE_QUOTE) + '|' + |
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rexstr(YAML_SIMPLE_KEY) |
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) |
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YAML_VALUE = unirex( |
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rexstr(YAML_DOUBLE_QUOTE) + '|' + |
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rexstr(YAML_SINGLE_QUOTE) + '|' + |
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rexstr(YAML_SIMPLE_VALUE) |
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) |
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YAML_SEPARATOR = unirex( |
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rexstr(ANY_WHITE_SPACE) + |
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':' + rexstr(WHITE_SPACE) + |
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rexstr(ANY_WHITE_SPACE) |
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) |
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YAML_LINE = unirex( |
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'(' + rexstr(YAML_KEY) + ')' + |
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rexstr(YAML_SEPARATOR) + |
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'(' + rexstr(YAML_VALUE) + ')' |
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) |
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# FRONTMATTER REGEX # |
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YAML_FRONTMATTER = unirex( |
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rexstr(POSSIBLE_STARTS) + |
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rexstr(YAML_LOOKAHEAD) + |
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rexstr(YAML_START) + rexstr(SOME_NEW_LINES) + |
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'(?:' + |
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'(' + rexstr(INDENTATION) + ')' + |
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rexstr(YAML_LINE) + rexstr(SOME_NEW_LINES) + |
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'(?:' + |
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'\\1' + rexstr(YAML_LINE) + rexstr(SOME_NEW_LINES) + |
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'){0,4}' + |
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')?' + |
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rexstr(YAML_END) + rexstr(POSSIBLE_ENDS) |
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) |
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# SEARCHES # |
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FIND_YAML_LINES = unirex( |
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rexstr(NEW_LINE) + rexstr(INDENTATION) + rexstr(YAML_LINE) |
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) |
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# STRING PROCESSING # |
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def process_string(str) |
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case str[0] |
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when '"' |
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str[1..-2] |
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when "'" |
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str[1..-2].gsub(/''/, "'") |
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else |
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str |
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end |
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end |
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# BIO PROCESSING # |
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def process_bio content |
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result = { |
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text: content.gsub(/"/, '"').gsub(/'/, "'"), |
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metadata: [] |
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} |
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yaml = YAML_FRONTMATTER.match(result[:text]) |
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return result unless yaml |
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yaml = yaml[0] |
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start = YAML_START =~ result[:text] |
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ending = start + yaml.length - (YAML_START =~ yaml) |
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result[:text][start..ending - 1] = '' |
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metadata = nil |
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index = 0 |
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while metadata = FIND_YAML_LINES.match(yaml, index) do |
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index = metadata.end(0) |
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result[:metadata].push [ |
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process_string(metadata[1]), process_string(metadata[2]) |
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] |
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end |
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return result |
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end |
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end |
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