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https://github.com/the-djmaze/snappymail.git
synced 2026-08-30 04:29:21 +03:00
Not perfect but it can parse the rainloop script to a tree and back to string
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djmaze
parent
b2e77f3f67
commit
2786d0d959
5 changed files with 155 additions and 113 deletions
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@ -7,59 +7,59 @@
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const
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RegEx = Sieve.RegEx,
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M = {
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UNKNOWN : 0,
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STRING_LIST : 1,
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QUOTED_STRING : 2,
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MULTILINE_STRING : 3,
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HASH_COMMENT : 4,
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BRACKET_COMMENT : 5,
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BLOCK_START : 6,
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BLOCK_END : 7,
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LEFT_PARENTHESIS : 8,
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RIGHT_PARENTHESIS: 9,
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COMMA : 10,
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SEMICOLON : 11,
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TAG : 12,
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IDENTIFIER : 13,
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NUMBER : 14,
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WHITESPACE : 15
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},
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T_UNKNOWN = 0,
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T_STRING_LIST = 1,
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T_QUOTED_STRING = 2,
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T_MULTILINE_STRING = 3,
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T_HASH_COMMENT = 4,
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T_BRACKET_COMMENT = 5,
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T_BLOCK_START = 6,
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T_BLOCK_END = 7,
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T_LEFT_PARENTHESIS = 8,
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T_RIGHT_PARENTHESIS = 9,
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T_COMMA = 10,
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T_SEMICOLON = 11,
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T_TAG = 12,
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T_IDENTIFIER = 13,
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T_NUMBER = 14,
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T_WHITESPACE = 15,
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MRegEx = [
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/* M.STRING_LIST */ RegEx.STRING_LIST,
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/* M.QUOTED_STRING */ RegEx.QUOTED_STRING,
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/* M.MULTILINE_STRING */ RegEx.MULTI_LINE,
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/* M.HASH_COMMENT */ RegEx.HASH_COMMENT,
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/* M.BRACKET_COMMENT */ RegEx.BRACKET_COMMENT,
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/* M.BLOCK_START */ '\\{',
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/* M.BLOCK_END */ '\\}',
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/* M.LEFT_PARENTHESIS */ '\\(', // anyof / allof
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/* M.RIGHT_PARENTHESIS */ '\\)', // anyof / allof
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/* M.COMMA */ ',',
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/* M.SEMICOLON */ ';',
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/* M.TAG */ RegEx.TAG,
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/* M.IDENTIFIER */ RegEx.IDENTIFIER,
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/* M.NUMBER */ RegEx.NUMBER,
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/* M.WHITESPACE */ '(?: |\\r\\n|\\t)+',
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/* M.UNKNOWN */ '[^ \\r\\n\\t]+'
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].join(')|(');
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TokensRegEx = '(' + [
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/* T_STRING_LIST */ RegEx.STRING_LIST,
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/* T_QUOTED_STRING */ RegEx.QUOTED_STRING,
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/* T_MULTILINE_STRING */ RegEx.MULTI_LINE,
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/* T_HASH_COMMENT */ RegEx.HASH_COMMENT,
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/* T_BRACKET_COMMENT */ RegEx.BRACKET_COMMENT,
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/* T_BLOCK_START */ '\\{',
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/* T_BLOCK_END */ '\\}',
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/* T_LEFT_PARENTHESIS */ '\\(', // anyof / allof
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/* T_RIGHT_PARENTHESIS */ '\\)', // anyof / allof
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/* T_COMMA */ ',',
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/* T_SEMICOLON */ ';',
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/* T_TAG */ RegEx.TAG,
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/* T_IDENTIFIER */ RegEx.IDENTIFIER,
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/* T_NUMBER */ RegEx.NUMBER,
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/* T_WHITESPACE */ '(?: |\\r\\n|\\t)+',
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/* T_UNKNOWN */ '[^ \\r\\n\\t]+'
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].join(')|(') + ')';
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Sieve.parseScript = script => {
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let match,
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line = 1,
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tree = [],
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// create one regex to find the right match
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// avoids looping over all possible tokens: increases performance
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regex = RegExp(MRegEx, 'g'),
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// Create one regex to find the tokens
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// Use exec() to forward since lastIndex
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regex = RegExp(TokensRegEx, 'gm'),
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levels = [],
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command = null,
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args = [];
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const
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error = message => { throw new SyntaxError(message + ' at ' + regex.lastIndex, 'script.sieve', line) },
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error = message => {
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throw new SyntaxError(message + ' at ' + regex.lastIndex + ' line ' + line, 'script.sieve', line)
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},
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pushArgs = () => {
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if (command && args.length) {
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command.pushArguments(args);
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@ -77,9 +77,11 @@ Sieve.parseScript = script => {
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// create the part
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switch (type)
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{
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case M.IDENTIFIER: {
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case T_IDENTIFIER: {
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pushArgs();
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let new_command;
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value = value.toLowerCase();
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let new_command,
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className = value[0].toUpperCase() + value.substring(1);
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if ('if' === value) {
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new_command = new Sieve.Commands.Conditional(value);
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} else if ('elsif' === value || 'else' === value) {
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@ -89,16 +91,16 @@ Sieve.parseScript = script => {
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} else if ('allof' === value || 'anyof' === value) {
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(command instanceof Sieve.Commands.Conditional)
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|| error('Test-list not in conditional');
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new_command = new Sieve.Tests[value]();
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} else if (Sieve.Tests[value]) {
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new_command = new Sieve.Tests[className]();
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} else if (Sieve.Tests[className]) {
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// address / envelope / exists / header / not / size
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new_command = new Sieve.Tests[value]();
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} else if (Sieve.Commands[value]) {
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new_command = new Sieve.Tests[className]();
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} else if (Sieve.Commands[className]) {
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// discard / fileinto / keep / redirect / require / stop
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new_command = new Sieve.Commands[value]();
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} else if (Sieve.Extensions[value]) {
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new_command = new Sieve.Commands[className]();
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} else if (Sieve.Extensions[className]) {
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// body / ereject / reject / imap4flags / vacation
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new_command = new Sieve.Extensions[value]();
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new_command = new Sieve.Extensions[className]();
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} else {
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error('Unknown command ' + value);
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// new_command = new Sieve.Grammar.Command(value);
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@ -122,64 +124,64 @@ Sieve.parseScript = script => {
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} else {
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tree.push(new_command);
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}
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if (new_command instanceof Sieve.Commands.Conditional || new_command instanceof Sieve.Commands.TestList) {
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if (new_command instanceof Sieve.Commands.Conditional || new_command instanceof Sieve.Grammar.TestList) {
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levels.push(new_command);
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}
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}
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command = new_command;
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break; }
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case M.TAG:
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case T_TAG:
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command
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? args.push(value)
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? args.push(value.toLowerCase())
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: error('Tag must be command argument');
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break;
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case M.STRING_LIST:
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case T_STRING_LIST:
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command
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? args.push(Sieve.Grammar.StringList.fromString(value))
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: error('String list must be command argument');
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break;
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case M.MULTILINE_STRING:
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case T_MULTILINE_STRING:
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command
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? args.push(new Sieve.Grammar.MultiLine(value))
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: error('Multi-line string must be command argument');
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break;
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case M.QUOTED_STRING:
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case T_QUOTED_STRING:
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command
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? args.push(new Sieve.Grammar.QuotedString(value.substr(1,value.length-2)))
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: error('Quoted string must be command argument');
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break;
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case M.NUMBER:
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case T_NUMBER:
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command
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? args.push(new Sieve.Grammar.Number(value))
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: error('Number must be command argument');
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break;
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case M.BRACKET_COMMENT:
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case T_BRACKET_COMMENT:
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(command ? command.commands : tree).push(
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new Sieve.Grammar.BracketComment(value.substr(1,value.length-4))
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new Sieve.Grammar.BracketComment(value.substr(2, value.length-4))
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);
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break;
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case M.HASH_COMMENT:
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case T_HASH_COMMENT:
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(command ? command.commands : tree).push(
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new Sieve.Grammar.HashComment(value.substr(1).trim())
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);
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break;
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case M.WHITESPACE:
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case T_WHITESPACE:
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// (command ? command.commands : tree).push(value.trim());
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command || tree.push(value.trim());
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break;
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case M.SEMICOLON:
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case T_SEMICOLON:
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command || error('Semicolon not at end of command');
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pushArgs();
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// levels.pop();
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command = levels.last();
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break;
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case M.BLOCK_START:
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case T_BLOCK_START:
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// https://tools.ietf.org/html/rfc5228#section-2.9
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// Action commands do not take tests or blocks
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levels.length || error('Block start not part of control command');
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@ -187,28 +189,28 @@ Sieve.parseScript = script => {
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pushArgs();
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command = levels.last();
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break;
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case M.BLOCK_END:
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case T_BLOCK_END:
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levels.length || error('Block end has no matching block start');
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levels.pop();
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command = levels.last();
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break;
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// anyof / allof
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case M.LEFT_PARENTHESIS:
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case T_LEFT_PARENTHESIS:
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(levels.last() instanceof Sieve.Grammar.TestList)
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|| error('Test start not part of test-list');
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command || error('Not inside command');
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pushArgs();
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command = levels.last();
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break;
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case M.RIGHT_PARENTHESIS:
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case T_RIGHT_PARENTHESIS:
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(levels.last() instanceof Sieve.Grammar.TestList)
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|| error('Test end not part of test-list');
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pushArgs();
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levels.pop();
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command = levels.last();
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break;
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case M.COMMA:
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case T_COMMA:
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// Must be inside PARENTHESIS aka test-list
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(levels.last() instanceof Sieve.Grammar.TestList)
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|| error('Comma not part of test-list');
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@ -216,7 +218,7 @@ Sieve.parseScript = script => {
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command = levels.last();
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break;
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case M.UNKNOWN:
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case T_UNKNOWN:
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error('Invalid token ' + value);
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}
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