MessageParser::findNextUUEncodedPartPosition() - Code Metrics - Inspection of "Release 0.2.0 - UUEncoding" - zbateson/mail-mime-parser - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( aab6ae...03b37f )

by Zaahid

created 2016-02-28 00:00 UTC

MessageParser::findNextUUEncodedPartPosition() A

↳ Parent: MessageParser

Complexity

Conditions	3
Paths	2

Size

Total Lines	14
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	14
rs	9.4285
cc	3
eloc	11
nc	2
nop	1

<?php
/**
 * This file is part of the ZBateson\MailMimeParser project.
 *
 * @license http://opensource.org/licenses/bsd-license.php BSD
 */
namespace ZBateson\MailMimeParser;

/**
 * Parses a mail mime message into its component parts.  To invoke, call
 * MailMimeParser::parse.
 *
 * @author Zaahid Bateson
 */
class MessageParser
{
    /**
     * @var \ZBateson\MailMimeParser\Message the Message object that the read
     * mail mime message will be parsed into
     */
    protected $message;
    
    /**
     * @var \ZBateson\MailMimeParser\MimePartFactory the MimePartFactory object
     * used to create parts.
     */
    protected $partFactory;
    
    /**
     * @var \ZBateson\MailMimeParser\PartStreamRegistry the PartStreamRegistry 
     * object used to register stream parts.
     */
    protected $partStreamRegistry;
    
    /**
     * Sets up the parser with its dependencies.
     * 
     * @param \ZBateson\MailMimeParser\Message $m
     * @param \ZBateson\MailMimeParser\MimePartFactory $pf
     * @param \ZBateson\MailMimeParser\PartStreamRegistry $psr
     */
    public function __construct(Message $m, MimePartFactory $pf, PartStreamRegistry $psr)
    {
        $this->message = $m;
        $this->partFactory = $pf;
        $this->partStreamRegistry = $psr;
    }
    
    /**
     * Parses the passed stream handle into the ZBateson\MailMimeParser\Message
     * object and returns it.
     * 
     * @param resource $fhandle the resource handle to the input stream of the
     *        mime message
     * @return \ZBateson\MailMimeParser\Message
     */
    public function parse($fhandle)
    {
        $this->partStreamRegistry->register($this->message->getObjectId(), $fhandle);
        $this->read($fhandle, $this->message);
        return $this->message;
    }
    
    /**
     * Reads header lines up to an empty line, adding them to the passed $part.
     * 
     * @param resource $handle the resource handle to read from
     * @param \ZBateson\MailMimeParser\MimePart $part the current part to add
     *        headers to
     */
    protected function readHeaders($handle, MimePart $part)
    {
        $header = '';
        do {
            $line = fgets($handle, 1000);
            if ($line[0] !== "\t" && $line[0] !== ' ') {
                if (!empty($header) && strpos($header, ':') !== false) {
                    $a = explode(':', $header, 2);
                    $part->setRawHeader($a[0], trim($a[1]));
                }
                $header = '';
            } else {
                $line = ' ' . ltrim($line);
            }
            $header .= rtrim($line, "\r\n");
        } while (!empty($header));
    }
    
    /**
     * Reads the content of a mime part up to a boundary, or the entire message
     * if no boundary is specified.
     * 
     * readPartContent may be called to skip to the first boundary to read its
     * headers, in which case $skipPart should be true.
     * 
     * If the end boundary is found, the method returns true.
     * 
     * @param resource $handle the input stream resource
     * @param \ZBateson\MailMimeParser\Message $message the current Message
     *        object
     * @param \ZBateson\MailMimeParser\MimePart $part the current MimePart
     *        object to load the content into.
     * @param string $boundary the MIME boundary
     * @param boolean $skipPart pass true if the intention is to read up to the
     *        beginning MIME boundary's headers
     * @return boolean if the end boundary is found
     */
    protected function readPartContent($handle, Message $message, MimePart $part, $boundary, $skipPart)
    {
        $start = ftell($handle);
        $boundaryLength = 0;
        $endBoundaryFound = false;
        do {
            $line = fgets($handle);
            if (!empty($boundary)) {
                $boundaryLength = strlen($line);
                $test = rtrim($line);
                if ($test === "--$boundary") {
                    break;
                } elseif ($test === "--$boundary--") {
                    $endBoundaryFound = true;
                    break;
                }
            }
        } while (!feof($handle));
        
        if (!$skipPart) {
            $end = ftell($handle) - $boundaryLength;
            $this->partStreamRegistry->attachPartStreamHandle($part, $message, $start, $end);
            $message->addPart($part);
        }
        return $endBoundaryFound;
    }
    
    /**
     * Finds the boundaries for the current MimePart, reads its content and
     * creates and returns the next part, setting its parent part accordingly.
     * 
     * @param resource $handle The handle to read from
     * @param \ZBateson\MailMimeParser\Message $message The current Message
     * @param \ZBateson\MailMimeParser\MimePart $part 
     * @return type
     */
    protected function readMimeMessagePart($handle, Message $message, MimePart $part)
    {
        $boundary = $part->getHeaderParameter('Content-Type', 'boundary');
        $skipPart = true;
        $parent = $part;

        if (empty($boundary) || !preg_match('~multipart/\w+~i', $part->getHeaderValue('Content-Type'))) {
            // either there is no boundary (possibly no parent boundary either) and message is read
            // till the end, or we're in a boundary already and content should be read till the parent
            // boundary is reached
            if ($part->getParent() !== null) {
                $parent = $part->getParent();
                $boundary = $parent->getHeaderParameter('Content-Type', 'boundary');
            }
            $skipPart = false;
        }
        // keep reading if an end boundary is found, to find the parent's boundary
        while ($this->readPartContent($handle, $message, $part, $boundary, $skipPart) && $parent !== null) {
            $parent = $parent->getParent();
            if ($parent !== null) {
                $boundary = $parent->getHeaderParameter('Content-Type', 'boundary');
            }
            $skipPart = true;
        }
        $nextPart = $this->partFactory->newMimePart();
        if ($parent === null) {
            $parent = $message;
        }
        $nextPart->setParent($parent);
        return $nextPart;
    }
    
    /**
     * Extracts the filename and end position of a UUEncoded part.
     * 
     * The filename is set to the passed $nextFilename parameter.  The end
     * position is returned.
     * 
     * @param resource $handle the current file handle
     * @param int &$nextMode is assigned the value of the next file mode or null
     *        if not found
     * @param string &$nextFilename is assigned the value of the next filename
     *        or null if not found
     * @param int &$end assigned the offset position within the passed resource
     *        $handle of the end of the uuencoded part
     */
    private function findNextUUEncodedPartPosition($handle)
    {
        $end = ftell($handle);
        do {
            $line = trim(fgets($handle));
            $matches = null;
            if (preg_match('/^begin [0-7]{3} .*$/', $line, $matches)) {
                fseek($handle, $end);
                break;
            }
            $end = ftell($handle);
        } while (!feof($handle));
        return $end;
    }
    
    /**
     * Reads one part of a UUEncoded message and adds it to the passed Message
     * as a MimePart.
     * 
     * The method reads up to the first 'begin' part of the message, or to the
     * end of the message if no 'begin' exists.
     * 
     * @param resource $handle
     * @param \ZBateson\MailMimeParser\Message $message
     * @return string
     */
    protected function readUUEncodedOrPlainTextPart($handle, Message $message)
    {
        $start = ftell($handle);
        $line = trim(fgets($handle));
        $end = $this->findNextUUEncodedPartPosition($handle);
        
        $part = null;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
        if (preg_match('/^begin ([0-7]{3}) (.*)$/', $line, $matches)) {
            $mode = $matches[1];
            $filename = $matches[2];
            $part = $this->partFactory->newUUEncodedPart($mode, $filename);
            $this->partStreamRegistry->attachPartStreamHandle($part, $message, $start, $end);
        } else {
            $part = $this->partFactory->newNonMimePart();
            $this->partStreamRegistry->attachPartStreamHandle($part, $message, $start, $end);
        }
        $message->addPart($part);
    }
    
    /**
     * Reads the message from the input stream $handle into $message.
     * 
     * The method will loop to read headers and find and parse multipart-mime
     * message parts and uuencoded attachments (as mime-parts), adding them to
     * the passed Message object.
     * 
     * @param resource $handle
     * @param \ZBateson\MailMimeParser\Message $message
     */
    protected function read($handle, Message $message)
    {
        $part = $message;
        $this->readHeaders($handle, $message);
        $contentType = $part->getHeaderValue('Content-Type');
        $mimeVersion = $part->getHeaderValue('Mime-Version');
        do {
            if ($part === $message && $contentType === null && $mimeVersion === null) {
                $this->readUUEncodedOrPlainTextPart($handle, $message);
            } else {
                $part = $this->readMimeMessagePart($handle, $message, $part);
                $this->readHeaders($handle, $part);
            }
        } while (!feof($handle));
    }
}


1			<?php
2			/**
3			* This file is part of the ZBateson\MailMimeParser project.
4			*
5			* @license http://opensource.org/licenses/bsd-license.php BSD
6			*/
7			namespace ZBateson\MailMimeParser;
8
9			/**
10			* Parses a mail mime message into its component parts. To invoke, call
11			* MailMimeParser::parse.
12			*
13			* @author Zaahid Bateson
14			*/
15			class MessageParser
16			{
17			/**
18			* @var \ZBateson\MailMimeParser\Message the Message object that the read
19			* mail mime message will be parsed into
20			*/
21			protected $message;
22
23			/**
24			* @var \ZBateson\MailMimeParser\MimePartFactory the MimePartFactory object
25			* used to create parts.
26			*/
27			protected $partFactory;
28
29			/**
30			* @var \ZBateson\MailMimeParser\PartStreamRegistry the PartStreamRegistry
31			* object used to register stream parts.
32			*/
33			protected $partStreamRegistry;
34
35			/**
36			* Sets up the parser with its dependencies.
37			*
38			* @param \ZBateson\MailMimeParser\Message $m
39			* @param \ZBateson\MailMimeParser\MimePartFactory $pf
40			* @param \ZBateson\MailMimeParser\PartStreamRegistry $psr
41			*/
42			public function __construct(Message $m, MimePartFactory $pf, PartStreamRegistry $psr)
43			{
44			$this->message = $m;
45			$this->partFactory = $pf;
46			$this->partStreamRegistry = $psr;
47			}
48
49			/**
50			* Parses the passed stream handle into the ZBateson\MailMimeParser\Message
51			* object and returns it.
52			*
53			* @param resource $fhandle the resource handle to the input stream of the
54			* mime message
55			* @return \ZBateson\MailMimeParser\Message
56			*/
57			public function parse($fhandle)
58			{
59			$this->partStreamRegistry->register($this->message->getObjectId(), $fhandle);
60			$this->read($fhandle, $this->message);
61			return $this->message;
62			}
63
64			/**
65			* Reads header lines up to an empty line, adding them to the passed $part.
66			*
67			* @param resource $handle the resource handle to read from
68			* @param \ZBateson\MailMimeParser\MimePart $part the current part to add
69			* headers to
70			*/
71			protected function readHeaders($handle, MimePart $part)
72			{
73			$header = '';
74			do {
75			$line = fgets($handle, 1000);
76			if ($line[0] !== "\t" && $line[0] !== ' ') {
77			if (!empty($header) && strpos($header, ':') !== false) {
78			$a = explode(':', $header, 2);
79			$part->setRawHeader($a[0], trim($a[1]));
80			}
81			$header = '';
82			} else {
83			$line = ' ' . ltrim($line);
84			}
85			$header .= rtrim($line, "\r\n");
86			} while (!empty($header));
87			}
88
89			/**
90			* Reads the content of a mime part up to a boundary, or the entire message
91			* if no boundary is specified.
92			*
93			* readPartContent may be called to skip to the first boundary to read its
94			* headers, in which case $skipPart should be true.
95			*
96			* If the end boundary is found, the method returns true.
97			*
98			* @param resource $handle the input stream resource
99			* @param \ZBateson\MailMimeParser\Message $message the current Message
100			* object
101			* @param \ZBateson\MailMimeParser\MimePart $part the current MimePart
102			* object to load the content into.
103			* @param string $boundary the MIME boundary
104			* @param boolean $skipPart pass true if the intention is to read up to the
105			* beginning MIME boundary's headers
106			* @return boolean if the end boundary is found
107			*/
108			protected function readPartContent($handle, Message $message, MimePart $part, $boundary, $skipPart)
109			{
110			$start = ftell($handle);
111			$boundaryLength = 0;
112			$endBoundaryFound = false;
113			do {
114			$line = fgets($handle);
115			if (!empty($boundary)) {
116			$boundaryLength = strlen($line);
117			$test = rtrim($line);
118			if ($test === "--$boundary") {
119			break;
120			} elseif ($test === "--$boundary--") {
121			$endBoundaryFound = true;
122			break;
123			}
124			}
125			} while (!feof($handle));
126
127			if (!$skipPart) {
128			$end = ftell($handle) - $boundaryLength;
129			$this->partStreamRegistry->attachPartStreamHandle($part, $message, $start, $end);
130			$message->addPart($part);
131			}
132			return $endBoundaryFound;
133			}
134
135			/**
136			* Finds the boundaries for the current MimePart, reads its content and
137			* creates and returns the next part, setting its parent part accordingly.
138			*
139			* @param resource $handle The handle to read from
140			* @param \ZBateson\MailMimeParser\Message $message The current Message
141			* @param \ZBateson\MailMimeParser\MimePart $part
142			* @return type
143			*/
144			protected function readMimeMessagePart($handle, Message $message, MimePart $part)
145			{
146			$boundary = $part->getHeaderParameter('Content-Type', 'boundary');
147			$skipPart = true;
148			$parent = $part;
149
150			if (empty($boundary) \|\| !preg_match('~multipart/\w+~i', $part->getHeaderValue('Content-Type'))) {
151			// either there is no boundary (possibly no parent boundary either) and message is read
152			// till the end, or we're in a boundary already and content should be read till the parent
153			// boundary is reached
154			if ($part->getParent() !== null) {
155			$parent = $part->getParent();
156			$boundary = $parent->getHeaderParameter('Content-Type', 'boundary');
157			}
158			$skipPart = false;
159			}
160			// keep reading if an end boundary is found, to find the parent's boundary
161			while ($this->readPartContent($handle, $message, $part, $boundary, $skipPart) && $parent !== null) {
162			$parent = $parent->getParent();
163			if ($parent !== null) {
164			$boundary = $parent->getHeaderParameter('Content-Type', 'boundary');
165			}
166			$skipPart = true;
167			}
168			$nextPart = $this->partFactory->newMimePart();
169			if ($parent === null) {
170			$parent = $message;
171			}
172			$nextPart->setParent($parent);
173			return $nextPart;
174			}
175
176			/**
177			* Extracts the filename and end position of a UUEncoded part.
178			*
179			* The filename is set to the passed $nextFilename parameter. The end
180			* position is returned.
181			*
182			* @param resource $handle the current file handle
183			* @param int &$nextMode is assigned the value of the next file mode or null
184			* if not found
185			* @param string &$nextFilename is assigned the value of the next filename
186			* or null if not found
187			* @param int &$end assigned the offset position within the passed resource
188			* $handle of the end of the uuencoded part
189			*/
190			private function findNextUUEncodedPartPosition($handle)
191			{
192			$end = ftell($handle);
193			do {
194			$line = trim(fgets($handle));
195			$matches = null;
196			if (preg_match('/^begin [0-7]{3} .*$/', $line, $matches)) {
197			fseek($handle, $end);
198			break;
199			}
200			$end = ftell($handle);
201			} while (!feof($handle));
202			return $end;
203			}
204
205			/**
206			* Reads one part of a UUEncoded message and adds it to the passed Message
207			* as a MimePart.
208			*
209			* The method reads up to the first 'begin' part of the message, or to the
210			* end of the message if no 'begin' exists.
211			*
212			* @param resource $handle
213			* @param \ZBateson\MailMimeParser\Message $message
214			* @return string
215			*/
216			protected function readUUEncodedOrPlainTextPart($handle, Message $message)
217			{
218			$start = ftell($handle);
219			$line = trim(fgets($handle));
220			$end = $this->findNextUUEncodedPartPosition($handle);
221
222			$part = null;
			1 ignored issue – show Unused Code introduced 2016-02-28 00:04 UTC by Report Bug Copy Issue Report `$part` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
223			if (preg_match('/^begin ([0-7]{3}) (.*)$/', $line, $matches)) {
224			$mode = $matches[1];
225			$filename = $matches[2];
226			$part = $this->partFactory->newUUEncodedPart($mode, $filename);
227			$this->partStreamRegistry->attachPartStreamHandle($part, $message, $start, $end);
228			} else {
229			$part = $this->partFactory->newNonMimePart();
230			$this->partStreamRegistry->attachPartStreamHandle($part, $message, $start, $end);
231			}
232			$message->addPart($part);
233			}
234
235			/**
236			* Reads the message from the input stream $handle into $message.
237			*
238			* The method will loop to read headers and find and parse multipart-mime
239			* message parts and uuencoded attachments (as mime-parts), adding them to
240			* the passed Message object.
241			*
242			* @param resource $handle
243			* @param \ZBateson\MailMimeParser\Message $message
244			*/
245			protected function read($handle, Message $message)
246			{
247			$part = $message;
248			$this->readHeaders($handle, $message);
249			$contentType = $part->getHeaderValue('Content-Type');
250			$mimeVersion = $part->getHeaderValue('Mime-Version');
251			do {
252			if ($part === $message && $contentType === null && $mimeVersion === null) {
253			$this->readUUEncodedOrPlainTextPart($handle, $message);
254			} else {
255			$part = $this->readMimeMessagePart($handle, $message, $part);
256			$this->readHeaders($handle, $part);
257			}
258			} while (!feof($handle));
259			}
260			}
261

zbateson / mail-mime-parser

Push — master ( aab6ae...03b37f )

MessageParser::findNextUUEncodedPartPosition() A

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