add upstream 11.21b11.21

1 files changed, 24 insertions, 87 deletions

diff --git a/zen/zstring.cpp b/zen/zstring.cpp
index 635fb47d..76c0a81f 100644
--- a/zen/zstring.cpp
+++ b/zen/zstring.cpp
@@ -5,50 +5,12 @@
 // *****************************************************************************
 
 #include "zstring.h"
-#include <stdexcept>
-#include "utf.h"
-
     #include <glib.h>
     #include "sys_error.h"
 
 using namespace zen;
 
 
-Zstring getUpperCase(const Zstring& str)
-{
-    assert(str.find(Zchar('\0')) == Zstring::npos); //don't expect embedded nulls!
-
-    //fast pre-check:
-    if (isAsciiString(str)) //perf: in the range of 3.5ns
-    {
-        Zstring output = str;
-        for (Zchar& c : output)
-            c = asciiToUpper(c);
-        return output;
-    }
-
-    Zstring strNorm = getUnicodeNormalForm(str);
-    try
-    {
-        static_assert(sizeof(impl::CodePoint) == sizeof(gunichar));
-        Zstring output;
-        output.reserve(strNorm.size());
-
-        UtfDecoder<char> decoder(strNorm.c_str(), strNorm.size());
-        while (const std::optional<impl::CodePoint> cp = decoder.getNext())
-            impl::codePointToUtf<char>(::g_unichar_toupper(*cp), [&](char c) { output += c; }); //don't use std::towupper: *incomplete* and locale-dependent!
-
-        return output;
-
-    }
-    catch (SysError&)
-    {
-        assert(false);
-        return str;
-    }
-}
-
-
 Zstring getUnicodeNormalForm(const Zstring& str)
 {
     //fast pre-check:
@@ -75,63 +37,38 @@ Zstring getUnicodeNormalForm(const Zstring& str)
 }
 
 
-Zstring replaceCpyAsciiNoCase(const Zstring& str, const Zstring& oldTerm, const Zstring& newTerm)
+Zstring getUpperCase(const Zstring& str)
 {
-    if (oldTerm.empty())
-        return str;
-
-    //assert(isAsciiString(oldTerm));
-    Zstring output;
+    assert(str.find(Zchar('\0')) == Zstring::npos); //don't expect embedded nulls!
 
-    for (size_t pos = 0;;)
+    //fast pre-check:
+    if (isAsciiString(str)) //perf: in the range of 3.5ns
     {
-        const size_t posFound = std::search(str.begin() + pos, str.end(), //can't use getUpperCase(): input/output sizes may differ!
-                                            oldTerm.begin(), oldTerm.end(),
-        [](Zchar charL, Zchar charR) { return asciiToUpper(charL) == asciiToUpper(charR); }) - str.begin();
-
-        if (posFound == str.size())
-        {
-            if (pos == 0) //optimize "oldTerm not found": return ref-counted copy
-                return str;
-            output.append(str.begin() + pos, str.end());
-            return output;
-        }
-
-        output.append(str.begin() + pos, str.begin() + posFound);
-        output += newTerm;
-        pos = posFound + oldTerm.size();
+        Zstring output = str;
+        for (Zchar& c : output)
+            c = asciiToUpper(c);
+        return output;
     }
-}
-
-
-/* https://docs.microsoft.com/de-de/windows/desktop/Intl/handling-sorting-in-your-applications
-
-    Perf test: compare strings 10 mio times; 64 bit build
-    -----------------------------------------------------
-        string a = "Fjk84$%kgfj$%T\\\\Gffg\\gsdgf\\fgsx----------d-"
-        string b = "fjK84$%kgfj$%T\\\\gfFg\\gsdgf\\fgSy----------dfdf"
 
-    Windows (UTF16 wchar_t)
-      4 ns | wcscmp
-     67 ns | CompareStringOrdinalFunc+ + bIgnoreCase
-    314 ns | LCMapString + wmemcmp
-
-    OS X (UTF8 char)
-       6 ns | strcmp
-      98 ns | strcasecmp
-     120 ns | strncasecmp + std::min(sizeLhs, sizeRhs);
-     856 ns | CFStringCreateWithCString       + CFStringCompare(kCFCompareCaseInsensitive)
-    1110 ns | CFStringCreateWithCStringNoCopy + CFStringCompare(kCFCompareCaseInsensitive)
-    ________________________
-    time per call | function                                                   */
+    Zstring strNorm = getUnicodeNormalForm(str);
+    try
+    {
+        static_assert(sizeof(impl::CodePoint) == sizeof(gunichar));
+        Zstring output;
+        output.reserve(strNorm.size());
 
-std::weak_ordering compareNativePath(const Zstring& lhs, const Zstring& rhs)
-{
-    assert(lhs.find(Zchar('\0')) == Zstring::npos); //don't expect embedded nulls!
-    assert(rhs.find(Zchar('\0')) == Zstring::npos); //
+        UtfDecoder<char> decoder(strNorm.c_str(), strNorm.size());
+        while (const std::optional<impl::CodePoint> cp = decoder.getNext())
+            impl::codePointToUtf<char>(::g_unichar_toupper(*cp), [&](char c) { output += c; }); //don't use std::towupper: *incomplete* and locale-dependent!
 
-    return lhs <=> rhs;
+        return output;
 
+    }
+    catch (SysError&)
+    {
+        assert(false);
+        return str;
+    }
 }