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Merge pull request #182 from vibe-d/read_file_utf8_opt

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Read file UTF-8 optimization
This commit is contained in:
Leonid Kramer 2019-10-25 20:58:05 +02:00 committed by GitHub
parent 81ba969fd6 f56fd7580c
commit 8aae13b3c2
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 18 deletions
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4
source/vibe/core/file.d
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@ -118,7 +118,9 @@ string readFileUTF8(NativePath path)
{
import vibe.internal.string;
return stripUTF8Bom(sanitizeUTF8(readFile(path)));
auto data = readFile(path);
auto idata = () @trusted { return data.assumeUnique; } ();
return stripUTF8Bom(sanitizeUTF8(idata));
}
/// ditto
string readFileUTF8(string path)

30
source/vibe/internal/string.d
View file

@ -25,24 +25,20 @@ import core.exception;
Takes a string with possibly invalid UTF8 sequences and outputs a valid UTF8 string as near to
the original as possible.
*/
string sanitizeUTF8(in ubyte[] str)
string sanitizeUTF8(immutable(ubyte)[] str)
@safe pure {
import std.utf;
auto ret = appender!string();
ret.reserve(str.length);
size_t i = 0;
while (i < str.length) {
dchar ch = str[i];
try ch = std.utf.decode(cast(const(char[]))str, i);
catch( UTFException ){ i++; }
//catch( AssertError ){ i++; }
char[4] dst;
auto len = std.utf.encode(dst, ch);
ret.put(dst[0 .. len]);
}
return ret.data;
import std.encoding : sanitize;
auto ustr = cast(immutable(char)[])str;
return () @trusted { return sanitize(ustr); } ();
}
/// ditto
string sanitizeUTF8(in ubyte[] str)
@trusted pure {
import std.encoding : sanitize;
auto ustr = cast(immutable(char)[])str;
auto ret = sanitize(ustr);
if (ret.ptr is ustr.ptr) return ustr.idup;
else return ret;
}
/**