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Not perfect but it can parse the rainloop script to a tree and back to string

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This commit is contained in:
djmaze 2021-01-14 12:45:51 +01:00
parent b2e77f3f67
commit 2786d0d959
5 changed files with 155 additions and 113 deletions
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15
dev/Sieve/Commands.js
View file

@ -24,7 +24,10 @@ class Conditional
{
return this.identifier
+ ('else' !== this.identifier ? ' ' + this.test : '')
+ " {\r\n\t" + this.commands.join(";\r\n\t") + "\r\n}";
+ (this.commands.length
? ' {\r\n\t' + Sieve.arrayToString(this.commands, ';\r\n\t') + ';\r\n}'
: ';'
);
}
/*
public function pushArguments(array $args): void
@ -38,7 +41,7 @@ class Conditional
/**
* https://tools.ietf.org/html/rfc5228#section-3.2
*/
class Requires /* extends Array*/
class Require /* extends Array*/
{
constructor()
{
@ -47,7 +50,7 @@ class Requires /* extends Array*/
toString()
{
return 'require ' + this.capabilities;
return 'require ' + this.capabilities.toString();
}
pushArguments(args)
@ -86,7 +89,7 @@ class FileInto
toString()
{
return 'fileinto ' + this.mailbox;
return 'fileinto ' + this._mailbox;
}
get mailbox()
@ -159,11 +162,11 @@ class Discard
Sieve.Commands = {
// Control commands
Conditional: Conditional,
Requires: Requires,
Require: Require,
Stop: Stop,
// Action commands
Discard: Discard,
FileInto: FileInto,
Fileinto: FileInto,
Keep: Keep,
Redirect: Redirect
};

60
dev/Sieve/Grammar.js
View file

@ -4,6 +4,8 @@
(Sieve => {
const RegEx = Sieve.RegEx;
/**
* abstract
*/
@ -14,7 +16,10 @@ class StringType /*extends String*/
this._value = value;
}
// abstract function toString();
toString()
{
return this._value;
}
get value()
{
@ -57,9 +62,7 @@ class Command
{
let result = this.identifier;
if ('anyof' === result || 'allof' === result) {
let tests = [];
this.commands.forEach(cmd => tests.push(cmd.toString().replace(/;$/, '')));
result += ' (\r\n\t' + tests.join(',\r\n\t') + '\r\n)';
result += ' (\r\n\t' + Sieve.arrayToString(this.commands, ',\r\n\t') + '\r\n)';
} else {
this.arguments.forEach(arg => {
if (Array.isArray(arg)) {
@ -69,9 +72,7 @@ class Command
}
});
if (this.commands) {
result += ' {\r\n';
this.commands.forEach(cmd => result += '\t' + cmd + '\r\n');
result += '}';
result += ' {\r\n\t' + Sieve.arrayToString(this.commands, ';\r\n\t') + '\r\n}';
} else {
result += ';';
}
@ -95,11 +96,30 @@ class Command
}
}
/*
class Commands extends Array
{
toString()
{
return this.length
? '{\r\n\t' + Sieve.arrayToString(this, ';\r\n\t') + ';\r\n}'
: ';';
}
push(value)
{
if (value instanceof Command) {
super.push(value);
}
}
}
*/
class BracketComment extends Comment
{
toString()
{
return '/* ' + super() + ' */';
return '/* ' + super.toString() + ' */';
}
}
@ -107,7 +127,7 @@ class HashComment extends Comment
{
toString()
{
return '# ' + super();
return '# ' + super.toString();
}
}
@ -149,20 +169,23 @@ class StringList extends Array
if (!(value instanceof StringType)) {
value = new QuotedString(value);
}
super(value);
super.push(value);
}
}
StringList.fromString = list => {
let string,
obj = new StringList,
regex = RegExp('(?:^\\s*|\\s*,\\s*)(' + Sieve.RegEx.STRING + ')', 'g');
regex = RegExp('(?:^\\s*|\\s*,\\s*)(?:"(' + RegEx.QUOTED_TEXT + ')"|text:[ \\t]*('
+ RegEx.HASH_COMMENT + ')?\\r\\n'
+ '((?:' + RegEx.MULTILINE_LITERAL + '|' + RegEx.MULTILINE_DOTSTART + ')*)'
+ '\\.\\r\\n)', 'gm');
list = list.replace(/^[\r\n\t[]+/, '');
while ((string = regex.exec(list))) {
if (string[4]) {
obj.push(new MultiLine(string[4], string[3]));
if (string[3]) {
obj.push(new MultiLine(string[3], string[2]));
} else {
obj.push(new QuotedString(string[2]));
obj.push(new QuotedString(string[1]));
}
}
return obj;
@ -173,6 +196,7 @@ class QuotedString extends StringType
toString()
{
return '"' + this._value.replace(/[\\"]/g, '\\$&') + '"';
// return '"' + super.toString().replace(/[\\"]/g, '\\$&') + '"';
}
}
@ -211,7 +235,7 @@ class Test
toString()
{
return (this.identifier + ' ' + this.arguments.join(' ')).trim();
return (this.identifier + ' ' + Sieve.arrayToString(this.arguments, ' ')).trim();
}
pushArguments(args)
@ -247,20 +271,20 @@ class TestList extends Array
value = new Command($value);
}
*/
super(value);
super.push(value);
}
}
TestList.fromString = list => {
let test,
obj = new TestList,
regex = RegExp('(?:^\\s*|\\s*,\\s*)(' + Sieve.RegEx.IDENTIFIER + ')((?:\\s+' + Sieve.RegEx.ARGUMENT + ')*)', 'g');
regex = RegExp('(?:^\\s*|\\s*,\\s*)(' + RegEx.IDENTIFIER + ')((?:\\s+' + RegEx.ARGUMENT + ')*)', 'g');
list = list.replace(/^[\r\n\t(]+/, '');
while ((test = regex.exec(list))) {
let command = new Sieve.Commands.Command(test[1]);
obj.push(command);
/*
if (\preg_match_all('@\\s+(' . Sieve.RegEx.ARGUMENT . ')@', $test[2], $args, PREG_SET_ORDER)) {
if (\preg_match_all('@\\s+(' . RegEx.ARGUMENT . ')@', $test[2], $args, PREG_SET_ORDER)) {
foreach ($args as $arg) {
$command->arguments[] = $arg;
}

136
dev/Sieve/Parser.js
View file

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

52
dev/Sieve/RegEx.js
View file

@ -27,11 +27,22 @@ const
*/
OCTET_NOT_QSPECIAL = '[^\\x00\\r\\n"\\\\]',
/**
* hash-comment = "#" *octet-not-crlf CRLF
*/
HASH_COMMENT = '#' + OCTET_NOT_CRLF + '*\\r\\n',
/**
* QUANTIFIER = "K" / "M" / "G"
*/
QUANTIFIER = '[KMGkmg]',
/**
* quoted-safe = CRLF / octet-not-qspecial
* either a CRLF pair, OR a single octet other than NUL, CR, LF, double-quote, or backslash
*/
QUOTED_SAFE = '\\r\\n|' + OCTET_NOT_QSPECIAL,
/**
* quoted-special = "\" (DQUOTE / "\")
* represents just a double-quote or backslash
@ -43,12 +54,6 @@ const
*/
QUOTED_TEXT = '(?:' + QUOTED_SAFE + '|' + QUOTED_SPECIAL + ')*',
/**
* quoted-safe = CRLF / octet-not-qspecial
* either a CRLF pair, OR a single octet other than NUL, CR, LF, double-quote, or backslash
*/
QUOTED_SAFE = '\\r\\n|' + OCTET_NOT_QSPECIAL,
/**
* multiline-literal = [ octet-not-period *octet-not-crlf ] CRLF
*/
@ -83,18 +88,30 @@ const
/**
* bracket-comment = "/*" *not-star 1*STAR *(not-star-slash *not-star 1*STAR) "/"
*/
BRACKET_COMMENT: '/\\*.*?\\*/', // '/\\*[\\s\\S]*?\\*/'
BRACKET_COMMENT: '/\\*[\\s\\S]*?\\*/',
/**
* hash-comment = "#" *octet-not-crlf CRLF
*/
HASH_COMMENT: '#' + OCTET_NOT_CRLF + '*\\r\\n',
HASH_COMMENT: HASH_COMMENT,
/**
* identifier = (ALPHA / "_") *(ALPHA / DIGIT / "_")
*/
IDENTIFIER: '[a-zA-Z_][a-zA-Z0-9_]*',
/**
* multi-line = "text:" *(SP / HTAB) (hash-comment / CRLF)
*(multiline-literal / multiline-dotstart)
"." CRLF
*/
MULTI_LINE: 'text:[ \\t]*(?:' + HASH_COMMENT + ')?\\r\\n'
+ '(?:' + MULTILINE_LITERAL + '|' + MULTILINE_DOTSTART + ')*'
+ '\\.\\r\\n',
MULTILINE_LITERAL: MULTILINE_LITERAL,
MULTILINE_DOTSTART: MULTILINE_DOTSTART,
/**
* number = 1*DIGIT [ QUANTIFIER ]
*/
@ -105,6 +122,8 @@ const
*/
QUOTED_STRING: '"' + QUOTED_TEXT + '"',
QUOTED_TEXT: QUOTED_TEXT,
/**
* tag = ":" identifier
*/
@ -129,16 +148,7 @@ const
/**
* comment = bracket-comment / hash-comment
*/
//RegEx.COMMENT = RegEx.BRACKET_COMMENT + '|' + RegEx.HASH_COMMENT;
/**
* multi-line = "text:" *(SP / HTAB) (hash-comment / CRLF)
*(multiline-literal / multiline-dotstart)
"." CRLF
*/
RegEx.MULTI_LINE = 'text:[ \\t]*(?:' + RegEx.HASH_COMMENT + ')?\\r\\n'
+ '(?:' + MULTILINE_LITERAL + '|' + MULTILINE_DOTSTART + ')*'
+ '\\.\\r\\n';
//RegEx.COMMENT = RegEx.BRACKET_COMMENT + '|' + HASH_COMMENT;
/**************************************************
* https://tools.ietf.org/html/rfc5228#section-8.2
@ -153,13 +163,13 @@ RegEx.MULTI_LINE = 'text:[ \\t]*(?:' + RegEx.HASH_COMMENT + ')?\\r\\n'
* string-list = "[" string *("," string) "]" / string
* if there is only a single string, the brackets are optional
*/
RegEx.STRING_LIST = '\\[\\s*(?:' + RegEx.STRING + ')(?:\\s*,\\s*(?:' + RegEx.STRING + '))*\\s*\\]'
+ '|(?:' + RegEx.STRING + ')';
RegEx.STRING_LIST = '\\[\\s*(?:' + RegEx.STRING + ')(?:\\s*,\\s*(?:' + RegEx.STRING + '))*\\s*\\]';
// + '|(?:' + RegEx.STRING + ')';
/**
* argument = string-list / number / tag
*/
RegEx.ARGUMENT = RegEx.STRING_LIST + '|' + RegEx.NUMBER + '|' + RegEx.TAG;
RegEx.ARGUMENT = RegEx.STRING_LIST + '|' + RegEx.STRING + '|' + RegEx.NUMBER + '|' + RegEx.TAG;
/**
* arguments = *argument [ test / test-list ]

5
dev/sieve.js
View file

@ -9,7 +9,10 @@
Tests: {},
parseScript: ()=>{},
*/
Extensions: {}
Extensions: {},
arrayToString: (arr, separator) =>
arr.map(item => item.toString ? item.toString() : item).join(separator)
};
})(this);