php-src/unicode-progress.txt

Extension Upgrade Tracking
==========================

ext/standard
------------
  Status: In Progress

  array.c
  -------
    natsort(), natcasesort()
        Params API
        Either port strnatcmp() to support Unicode or maybe use ICU's
        numeric collation. Update: can't seem to get the right collation
        parameters to duplicate strnatcmp() functionality. Conclusion: port
        to support Unicode.

  string.c
  --------
    addcslashes()
        Params API. Figure out how to escape characters > 255.

    basename()
        Create php_u_basename() without mbstring stuff

    chunk_split()
        Params API, Unicode upgrades. Split on codepoint level.

    count_chars()
        Params API. Do we really want to go through the whole Unicode table?
        May need to use hashtable instead of array.

    dirname()
        Create php_u_dirname()

    hebrev(), hebrevc()
        Figure out if this is something we can use ICU for, internally.
        Check with Zeev.

    localeconv()
        Params API, update to use *_rt_* API.

    money_format()
        Just IS_UNICODE support with *_rt_* API.

    nl_langinfo()
        Params API, otherwise leave alone

    nl2br()
        Params API, IS_UNICODE support

    pathinfo()
        Simple upgrade, based on php_u_basename/php_u_dirname

    parse_str()
        Params API. How do we deal with encoding of the data?

    quotemeta()
        Params API, IS_UNICODE upgrade

    sscanf()
        Params API. Rest - no idea yet.

    str_replace()
        Params API, IS_UNICODE upgrade

    stri_replace()
        Params API, IS_UNICODE upgrade. Case-folding should be handled
        similar to stristr().

    str_rot13()
        Params API, IS_UNICODE support

    str_shuffle()
        Params API, IS_UNICODE support

    str_split()
        IS_UNICODE support, split on codepoint level.

    str_word_count()
        Params API, IS_UNICODE support, using u_isalpha(), etc.
    
    strcoll()
        Params API, upgrade to use Collator if TT == IS_UNICODE, test

    stripcslashes()
        Params API. Depends on how addcslashes() is implemented.

    stristr()
        This is the problematic one. There are a few approaches:

            1. Case-fold both need and haystack and then do simple search.

            2. Look at the implementation behind functions like
               u_strcasecmp() and try to adapt it to a string search. The
               implementation case-folds both strings incrementally. For
               a search, one would want to case-fold the pattern beforehand,
               but not the text in which you are searching.

            3. Take the first character in the pattern and get the set of
               all characters that have the same case folding (see the
               UnicodeSet/USet API). Then search in the string for the
               occurrence of any one of the set items (which include
               strings!).  Then do a case-insensitive comparison, allowing
               a match that does not end with the end of the text.

               The problematic cases are of course those ß->ss and similar.

        All other approaches bite.

    stripos()
        Review. Probably needs the same approach as stristr().

    strnatcmp(), strnatcasecmp()
        Params API. The rest depends on porting of strnatcmp.c

    strripos()
        Probably needs the same approach as stristr().

    strrchr()
        Needs update so that it doesn't try to find half of a surrogate
        pair.

    strrev()
        Params API

    strtr()
        Check on Derick's progress.

    substr_compare()
        IS_UNICODE support, case folding based on the same algorithm as
        stristr().

    substr_replace()
        Params API, test

    wordwrap()
        Upgrade, do wordwrapping on glyph level, maybe use additional
        whitespace chars instead of just space.




  Completed
  =========
  
  array.c
  -------
    array_change_key_case()
    array_chunk() 
    array_combine()
    array_count_values()
    array_fill()
    array_filter()
    array_flip()
    array_key_exists()
    array_keys()
    array_map()
    array_merge()
    array_merge_recursive()
    array_multisort()
    array_product()
    array_push(), array_pop(), array_shift(), array_unshift()
    array_pad()
    array_rand()
    array_reduce()
    array_reverse()
    array_search()
    array_slice()
    array_splice()
    array_sum()
    array_values()
    array_unique()
    array_walk()
    array_walk_recursive()
    compact()
    count()
    extract()
    in_array()
    min()
    max()
    range()
    shuffle()

    end(), prev(), next(), reset(), current(), key()

    sort(), rsort()
    asort(), arsort()
    ksort(), krsort() 
    usort(), uasort(), uksort()

    array_diff(), array_udiff()
    array_diff_assoc(), array_diff_uassoc(),
    array_udiff_assoc(), array_udiff_uassoc()
    array_diff_key(), array_diff_ukey()

    array_intersect(), array_uintersect()
    array_intersect_assoc(), array_uintersect_assoc()
    array_intersect_uassoc(), array_uintersect_uassoc()
    array_intersect_key(), array_intersect_ukey()


  string.c
  --------
    addslashes()
    bin2hex()
    chr()
    explode()
    implode()
    levenshtein()
    ord()
    range()
    similar_text()
    str_pad()
    str_repeat()
    strcspn()
    strip_tags()
    stripslashes()
    strpbrk()
    strpos()
    strrchr()
    strrev()
    strrpos()
    strspn()
    strstr()
    strtok()
    strtolower()
    strtoupper()
    substr()
    substr_count()
    substr_replace()
    trim()
    ucfirst()
    ucwords()


Zend Engine
-----------
  Status: In Progress

  TBD:
        debug_backtrace()
  Completed:
        class_exists()
        create_function()
        debug_print_backtrace()
        define()
        defined()
        each()
        error_reporting()
        extension_loaded()
        func_get_arg()
        func_get_args()
        func_num_args()
        function_exists()
        get_class()
        get_class_methods()
        get_class_vars()
        get_declared_classes()
        get_declared_interfaces()
        get_defined_constants()
        get_defined_functions()
        get_defined_vars()
        get_extension_funcs()
        get_included_files()
        get_loaded_extensions()
        get_object_vars()
        get_parent_class()
        get_resource_type()
        interface_exists()
        is_a()
        is_subclass_of()
        method_exists()
        property_exists()
        restore_error_handler()
        restore_exception_handler()
        set_error_handler()
        set_exception_handler()
        strcasecmp()
        strcmp()
        strlen()
        strncasecmp()
        strncmp()
        trigger_error()
        zend_thread_id()
        zend_version()

vim: set et ts=4 sts=4: