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#include "stdafx.h"
#include "Convert.h"
#include "Utf.h"
namespace storm {
#define WRITE(x) \
do { \
if (out < maxCount) \
to[out] = (x); \
out++; \
} while (false)
#define TERMINATE() \
do { \
WRITE(0); \
if (maxCount > 0) \
to[maxCount - 1] = 0; \
} while (false)
#define WRAP_CONVERT(NAME, FROM, TO, TO_GC) \
GcArray<TO> *NAME(Engine &e, const FROM *from) { \
size_t space = convert(from, (TO *)null, 0); \
GcArray<TO> *r = runtime::allocArray<TO>(e, &TO_GC, space); \
convert(from, r->v, space); \
return r; \
}
#define WRAP_CONVERT_SIZE(NAME, FROM, TO, TO_GC) \
GcArray<TO> *NAME ## NoNull(Engine &e, const FROM *from, size_t fromCount) { \
size_t space = convert(from, fromCount, (TO *)null, 0, false); \
GcArray<TO> *r = runtime::allocArray<TO>(e, &TO_GC, space); \
convert(from, fromCount, r->v, space, false); \
return r; \
} \
GcArray<TO> *NAME(Engine &e, const FROM *from, size_t fromCount) { \
size_t space = convert(from, fromCount, (TO *)null, 0, true); \
GcArray<TO> *r = runtime::allocArray<TO>(e, &TO_GC, space); \
convert(from, fromCount, r->v, space, true); \
return r; \
}
size_t convert(const char *from, wchar *to, size_t maxCount) {
size_t out = 0;
const char *at = from;
while (*at) {
nat left;
nat cp = utf8::firstData(*at, left);
at++;
for (nat i = 0; i < left; i++) {
if (utf8::isCont(*at)) {
cp = utf8::addCont(cp, *at);
at++;
} else {
cp = replacementChar;
break;
}
}
// Encode...
if (utf16::split(cp)) {
WRITE(utf16::splitLeading(cp));
WRITE(utf16::splitTrailing(cp));
} else {
WRITE(wchar(cp));
}
}
TERMINATE();
return out;
}
size_t convert(const char *from, size_t fromCount, wchar *to, size_t maxCount, bool nullTerminate) {
size_t out = 0;
size_t at = 0;
while (at < fromCount) {
nat left;
nat cp = utf8::firstData(from[at++], left);
for (nat i = 0; i < left; i++) {
if (at < fromCount && utf8::isCont(from[at])) {
cp = utf8::addCont(cp, from[at++]);
} else {
cp = replacementChar;
break;
}
}
// Encode...
if (utf16::split(cp)) {
WRITE(utf16::splitLeading(cp));
WRITE(utf16::splitTrailing(cp));
} else {
WRITE(wchar(cp));
}
}
if (nullTerminate)
TERMINATE();
return out;
}
size_t convert(const char *from, size_t fromCount, wchar *to, size_t maxCount) {
return convert(from, fromCount, to, maxCount, true);
}
size_t convert(const wchar *from, char *to, size_t maxCount) {
size_t out = 0;
const wchar *at = from;
byte buffer[utf8::maxBytes];
while (*at) {
wchar now = *at++;
nat cp = 0;
if (utf16::leading(now)) {
if (utf16::trailing(*at))
cp = utf16::assemble(now, *at++);
else
cp = replacementChar;
} else {
cp = now;
}
// Encode...
nat count = 0;
byte *buf = utf8::encode(cp, buffer, &count);
for (nat i = 0; i < count; i++)
WRITE(buf[i]);
}
TERMINATE();
return out;
}
size_t convert(const wchar *from, size_t fromCount, char *to, size_t maxCount, bool nullTerminate) {
size_t out = 0;
size_t at = 0;
byte buffer[utf8::maxBytes];
while (at < fromCount) {
wchar now = from[at++];
nat cp = 0;
if (utf16::leading(now)) {
if (utf16::trailing(from[at]))
cp = utf16::assemble(now, from[at++]);
else
cp = replacementChar;
} else {
cp = now;
}
// Encode...
nat count = 0;
byte *buf = utf8::encode(cp, buffer, &count);
for (nat i = 0; i < count; i++)
WRITE(buf[i]);
}
if (nullTerminate)
TERMINATE();
return out;
}
size_t convert(const wchar *from, size_t fromCount, char *to, size_t maxCount) {
return convert(from, fromCount, to, maxCount, true);
}
WRAP_CONVERT(toWChar, char, wchar, wcharArrayType);
WRAP_CONVERT_SIZE(toWChar, char, wchar, wcharArrayType);
WRAP_CONVERT(toChar, wchar, char, byteArrayType);
WRAP_CONVERT_SIZE(toChar, wchar, char, byteArrayType);
#ifdef POSIX
size_t convert(const wchar_t *from, wchar *to, size_t maxCount) {
size_t out = 0;
for (const wchar_t *at = from; *at; at++) {
nat cp = *at;
if (utf16::split(cp)) {
WRITE(utf16::splitLeading(cp));
WRITE(utf16::splitTrailing(cp));
} else {
WRITE(wchar(cp));
}
}
TERMINATE();
return out;
}
WRAP_CONVERT(toWChar, wchar_t, wchar, wcharArrayType);
#endif
}
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