andrei Wed Aug 2 21:51:43 2006 UTC
Modified files:
/php-src unicode-progress.txt
Log:
Notes after analyzing remainder of string.c.
http://cvs.php.net/viewvc.cgi/php-src/unicode-progress.txt?r1=1.33&r2=1.34&diff_format=u
Index: php-src/unicode-progress.txt
diff -u php-src/unicode-progress.txt:1.33 php-src/unicode-progress.txt:1.34
--- php-src/unicode-progress.txt:1.33 Wed Aug 2 20:31:51 2006
+++ php-src/unicode-progress.txt Wed Aug 2 21:51:43 2006
@@ -9,10 +9,140 @@
-------
natsort(), natcasesort()
Params API
- Either port strnatcmp() to support Unicode or maybe use ICU's numeric
collation
+ 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.
+
+ 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
+
+ similar_text()
+ Params API
+
+ 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 Ã->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
+
+ strtoupper(), strtolower(), strtotitle()
+ 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
@@ -157,4 +287,4 @@
zend_thread_id()
zend_version()
-vim: set et ts=4 sts:
+vim: set et ts=4 sts=4:
--
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