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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /other-licenses/7zstub/src/Common/UTFConvert.cpp | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'other-licenses/7zstub/src/Common/UTFConvert.cpp')
| -rw-r--r-- | other-licenses/7zstub/src/Common/UTFConvert.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/Common/UTFConvert.cpp b/other-licenses/7zstub/src/Common/UTFConvert.cpp new file mode 100644 index 000000000..5414e6b8d --- /dev/null +++ b/other-licenses/7zstub/src/Common/UTFConvert.cpp @@ -0,0 +1,91 @@ +// UTFConvert.cpp
+
+#include "StdAfx.h"
+
+#include "UTFConvert.h"
+#include "Types.h"
+
+static Byte kUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
+
+// These functions are for UTF8 <-> UTF16 conversion.
+
+bool ConvertUTF8ToUnicode(const AString &src, UString &dest)
+{
+ dest.Empty();
+ for(int i = 0; i < src.Length();)
+ {
+ Byte c = (Byte)src[i++];
+ if (c < 0x80)
+ {
+ dest += (wchar_t)c;
+ continue;
+ }
+ if(c < 0xC0)
+ return false;
+ int numAdds;
+ for (numAdds = 1; numAdds < 5; numAdds++)
+ if (c < kUtf8Limits[numAdds])
+ break;
+ UInt32 value = (c - kUtf8Limits[numAdds - 1]);
+ do
+ {
+ if (i >= src.Length())
+ return false;
+ Byte c2 = (Byte)src[i++];
+ if (c2 < 0x80 || c2 >= 0xC0)
+ return false;
+ value <<= 6;
+ value |= (c2 - 0x80);
+ numAdds--;
+ }
+ while(numAdds > 0);
+ if (value < 0x10000)
+ dest += (wchar_t)(value);
+ else
+ {
+ value -= 0x10000;
+ if (value >= 0x100000)
+ return false;
+ dest += (wchar_t)(0xD800 + (value >> 10));
+ dest += (wchar_t)(0xDC00 + (value & 0x3FF));
+ }
+ }
+ return true;
+}
+
+bool ConvertUnicodeToUTF8(const UString &src, AString &dest)
+{
+ dest.Empty();
+ for(int i = 0; i < src.Length();)
+ {
+ UInt32 value = (UInt32)src[i++];
+ if (value < 0x80)
+ {
+ dest += (char)value;
+ continue;
+ }
+ if (value >= 0xD800 && value < 0xE000)
+ {
+ if (value >= 0xDC00)
+ return false;
+ if (i >= src.Length())
+ return false;
+ UInt32 c2 = (UInt32)src[i++];
+ if (c2 < 0xDC00 || c2 >= 0xE000)
+ return false;
+ value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
+ }
+ int numAdds;
+ for (numAdds = 1; numAdds < 5; numAdds++)
+ if (value < (((UInt32)1) << (numAdds * 5 + 6)))
+ break;
+ dest += (char)(kUtf8Limits[numAdds - 1] + (value >> (6 * numAdds)));
+ do
+ {
+ numAdds--;
+ dest += (char)(0x80 + ((value >> (6 * numAdds)) & 0x3F));
+ }
+ while(numAdds > 0);
+ }
+ return true;
+}
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