History log of /PHP-8.2/ext/mbstring/tests/mb_decode_numericentity.phpt (Results 1 – 17 of 17)
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# 76a92c26 18-Jul-2022 Alex Dowad

mb_decode_numericentity decodes valid entities which are truncated at end of string

Since mb_decode_numericentity does not require all HTML entities
to end with ';', but allows them to b

mb_decode_numericentity decodes valid entities which are truncated at end of string

Since mb_decode_numericentity does not require all HTML entities
to end with ';', but allows them to be terminated by ANY non-digit
character, it doesn't make sense that valid entities which butt
up against the end of the input string are not converted.

As it turned out, supporting this case also made it possible
to simplify the code nicely.

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# 5d6bd557 15-Jul-2022 Alex Dowad

mb_decode_numericentity converts entities which immediately follow a valid/invalid entity

Thanks to Kamil Tieleka for suggesting that some of the behaviors of
the legacy implementation w

mb_decode_numericentity converts entities which immediately follow a valid/invalid entity

Thanks to Kamil Tieleka for suggesting that some of the behaviors of
the legacy implementation which the new mb_decode_numericentity
implementation took care to maintain were actually bugs and should
be fixed. Thanks also to Trevor Rowbotham for providing a link to
the HTML specification, showing how HTML numeric entities should
be interpreted.

mb_decode_numericentity now processes numeric entities in the
following situations where the old implementation would not:

- &<ENTITY> (for example, &&#65;)
- &#<ENTITY>
- &#x<ENTITY>
- <VALID BUT UNTERMINATED DECIMAL ENTITY><ENTITY> (for example, &#65&#65;)
- <VALID BUT UNTERMINATED HEX ENTITY><ENTITY>
- <INVALID AND UNTERMINATED DECIMAL ENTITY><ENTITY> (it does not matter why
the first entity is invalid; the value could be too big, it could have
too many digits, or it could not match the 'convmap' parameter)
- <INVALID AND UNTERMINATED HEX ENTITY><ENTITY>

This is consistent with the way that web browsers process
HTML entities.

show more ...

# 91969e90 14-May-2022 Alex Dowad

New implementation of mb_{de,en}code_numericentity

This new implementation uses the new encoding conversion filters.
Aside from fewer LOC and (hopefully) improved readability,
the di

New implementation of mb_{de,en}code_numericentity

This new implementation uses the new encoding conversion filters.
Aside from fewer LOC and (hopefully) improved readability,
the differences are as follows:

BEHAVIOR CHANGES:

- The old implementation used signed arithmetic when operating
on the 'convmap'. This meant that results could be surprising when
using convmap entries with 1 in the MSB. Further, types like 'int'
were used rather than those with a specific bit width, such as
'int32_t'. This meant that results could also depend on the
platform width of an 'int'.

Now unsigned arithmetic is used, with explicit bit widths.

- Similarly, while converting decimal numeric entities, the
legacy implementation would ensure that the value never overflowed
INT_MAX, and if it did, the entity would be treated as invalid
and passed through unconverted.

However, that again means that results depend on the platform
size of an 'int'. So now, we use a value with explicit bit width
(32 bits) to hold the value of a deconverted decimal entity, and
ensure that the entity value does not overflow that.

Further, because we are using an UNSIGNED 32-bit value rather
than a signed one, the ceiling for how large a decimal entity
can be is higher now.

All of this will probably not affect anyone, since Unicode
codepoints above U+10FFFF are invalid anyways. To see the
difference, you need to be using a text encoding like UCS-4,
which allows huge 'codepoints'.

- If it saw something which looked like a hex entity, but
turned out not to be a valid numeric entity, the old
implementation would sometimes convert the hexadecimal
digits a-f to A-F (uppercase). The new implementation passes
invalid numeric entities through without performing case
conversion.

- The old implementation of mb_encode_numericentity was
limited in how many decimal/hex digits it could emit.
If a text encoding like UCS-4 was in use, where 'codepoints'
can have huge values (larger than the valid range
stipulated by the Unicode standard), it would not error
out on a 'codepoint' whose value was too large for it,
but would rather mangle the value and emit a numeric
entity which decoded to some other random codepoint.
The new implementation is able to emit enough digits to
express any value which fits in 32 bits.

PERFORMANCE:

Based on micro-benchmarks run on my development machine:

Decoding numeric HTML entities is about 4 times faster, for
both decimal and hexadecimal entities, across a variety of
input string lengths. Encoding is about 3 times faster.

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# 57eafd44 15-Sep-2021 Alex Dowad

Add more tests for mb_decode_numericentity

# a06d015e 14-Jun-2021 Nikita Popov

Remove unnecessary mbstring skipifs

These functions are always available (if the extension is available
at all).

# 74859783 11-Jun-2021 Nikita Popov

Migrate SKIPIF -> EXTENSIONS (#7138)

This is an automated migration of most SKIPIF extension_loaded checks.

# cafceea7 24-Sep-2020 Nikita Popov

Update mbstring parameter names

Closes GH-6207.

# dc98c134 15-Jul-2020 Alex Dowad

Additional tests for mbstring extension

# 6111d64c 16-Apr-2020 Máté Kocsis

Improve a last couple of argument error messages

Closes GH-5404

# 7d170eb2 30-Jan-2020 Nikita Popov

Merge branch 'PHP-7.4'

* PHP-7.4:
Fix shift ub in mbstring
Restore digit check in mb_decode_numericentity()


# 9aadcb18 29-Jan-2020 Nikita Popov

Restore digit check in mb_decode_numericentity()

I replaced it with a multiplication overflow check in
18599f9c52959b2e8cbfac57e278644499a3547d. However, we need both,
because the co

Restore digit check in mb_decode_numericentity()

I replaced it with a multiplication overflow check in
18599f9c52959b2e8cbfac57e278644499a3547d. However, we need both,
because the code for restoring the number can't handle numbers
with many leading zeros right now and I don't feel like teaching it.

show more ...

# b2c8abe9 29-Jan-2020 Nikita Popov

Merge branch 'PHP-7.4'

* PHP-7.4:
Better overflow check for entity decoding


# 18599f9c 29-Jan-2020 Nikita Popov

Better overflow check for entity decoding

Check for multiplication overflow rather than number of digits.

# bc32cce6 29-Jan-2020 Nikita Popov

Merge branch 'PHP-7.4'

* PHP-7.4:
Fix recovery of large entities in mb_decode_numericentity()


# 91f87877 29-Jan-2020 Nikita Popov

Fix recovery of large entities in mb_decode_numericentity()

Make sure we don't overflow the integer.

Revision tags: php-7.3.13RC1, php-7.2.26RC1, php-7.4.0, php-7.2.25, php-7.3.12, php-7.4.0RC6, php-7.3.12RC1, php-7.2.25RC1, php-7.4.0RC5, php-7.1.33, php-7.2.24, php-7.3.11, php-7.4.0RC4, php-7.3.11RC1, php-7.2.24RC1
# e2100619 07-Oct-2019 Christoph M. Becker

Expect appropriate parameter type in the first place

`mb_encode_numericentity()` and `mb_decode_numericentity()` accepted
arbitrary zvals as `$convmap`, but ignored anything else than ar

Expect appropriate parameter type in the first place

`mb_encode_numericentity()` and `mb_decode_numericentity()` accepted
arbitrary zvals as `$convmap`, but ignored anything else than arrays.
This appears to be an unresolved relict of their ZPP conversion for
PHP 5.3[1]. We now expect an array in the first place.

We also expect `count($convmap)` to be a multiple of four (else we
throw a `ValueError`), and do no longer special case empty `$convmap`.

[1] <http://git.php.net/?p=php-src.git;a=commit;h=1c77f594294aee9d60e7309279c616c01c39ba9d>

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# b79740b4 07-Jul-2009 Felipe Pena

- New tests (WurzbrugUG testfest)