String::CPtr percentDecode(String::CPtr str, String::Encoding enc) {
if (!str || str->isEmpty())
return String::create();
Size len = str->length() + 1;
char* decoded = new char[len];
Size size = percentDecode(decoded, len, str->toStdString().c_str());
String::CPtr res;
switch (enc) {
case String::UTF8:
res = String::create(decoded, enc, size);
break;
case String::UTF16:
case String::UTF16BE:
case String::UTF16LE:
res = String::create(decoded, enc, size >> 1);
break;
case String::UTF32:
case String::UTF32BE:
case String::UTF32LE:
res = String::create(decoded, enc, size >> 2);
break;
default:
assert(false);
res = String::null();
}
delete[] decoded;
return res;
}
static inline Size indexOfSep(String::CPtr str, Size from) {
assert(str);
Size len = str->length();
for (Size i = from; i < len; i++) {
if (isSep(str->charAt(i))) return i;
}
return NO_POS;
}
String::CPtr dirname(String::CPtr path) {
LIBJ_STATIC_SYMBOL_DEF(symCurrent, ".");
if (!path) return symCurrent;
path = trimSeps(path);
String::CPtr base = basename(path);
Size baseLen = base->length();
Size pathLen = path->length();
if (baseLen == pathLen) {
return symCurrent;
} else {
Size sepPos = pathLen - baseLen - 1;
assert(isSep(path->charAt(sepPos)));
if (sepPos) {
return path->substring(0, sepPos);
} else {
return path->substring(0, 1);
}
}
}
String::CPtr percentEncode(String::CPtr str, String::Encoding enc) {
static const Boolean isBigEndian = endian() == BIG;
if (!str || str->length() == 0)
return String::create();
Buffer::Ptr buf;
switch (enc) {
case String::UTF8:
buf = Buffer::create(str, Buffer::UTF8);
break;
case String::UTF16:
if (isBigEndian) {
buf = Buffer::create(str, Buffer::UTF16BE);
} else {
buf = Buffer::create(str, Buffer::UTF16LE);
}
break;
case String::UTF16BE:
buf = Buffer::create(str, Buffer::UTF16BE);
break;
case String::UTF16LE:
buf = Buffer::create(str, Buffer::UTF16LE);
break;
case String::UTF32:
if (isBigEndian) {
buf = Buffer::create(str, Buffer::UTF32BE);
} else {
buf = Buffer::create(str, Buffer::UTF32LE);
}
break;
case String::UTF32BE:
buf = Buffer::create(str, Buffer::UTF32BE);
break;
case String::UTF32LE:
buf = Buffer::create(str, Buffer::UTF32LE);
break;
default:
assert(false);
buf = Buffer::null();
}
Size sourceLen = buf->length();
const char* source = static_cast<const char*>(buf->data());
Size encodedLen = sourceLen * 3 + 1;
char* encoded = new char[encodedLen];
percentEncode(encoded, encodedLen, source, sourceLen);
String::CPtr res = String::create(encoded);
delete[] encoded;
return res;
}
static inline String::CPtr trimSeps(String::CPtr str) {
assert(str);
Size len = str->length();
if (!len) return str;
Size i = len - 1;
while (1) {
if (!isSep(str->charAt(i))) {
return str->substring(0, i + 1);
}
if (i) {
i--;
} else {
break;
}
}
return str->substring(0, 1);
}
static inline Size lastIndexOfSep(String::CPtr str, Size from = NO_POS) {
assert(str);
Size len = str->length();
if (!len) return NO_POS;
if (from >= len) from = len - 1;
Size i = from;
while (1) {
if (isSep(str->charAt(i))) return i;
if (i) {
i--;
} else {
break;
}
}
return NO_POS;
}
String::CPtr normalize(String::CPtr path) {
LIBJ_STATIC_SYMBOL_DEF(symCurrent, ".");
LIBJ_STATIC_SYMBOL_DEF(symParent, "..");
LIBJ_STATIC_SYMBOL_DEF(symNull, "null");
if (!path) return symNull;
Boolean absolute = false;
Boolean endsWithSep = false;
typedef TypedJsArray<String::CPtr> StringArray;
StringArray::Ptr dirs = StringArray::create();
Size len = path->length();
for (Size i = 0; i < len;) {
Size idx = indexOfSep(path, i);
if (idx == 0) {
absolute = true;
} else if (idx != i) {
String::CPtr dir;
if (idx == NO_POS) {
dir = path->substring(i);
} else {
dir = path->substring(i, idx);
}
if (dir->equals(symParent)) {
Size numDirs = dirs->size();
if (numDirs > 0 &&
!dirs->getTyped(numDirs - 1)->equals(symParent)) {
dirs->removeTyped(numDirs - 1);
} else {
dirs->addTyped(dir);
}
} else if (!dir->equals(symCurrent)) {
dirs->addTyped(dir);
}
}
if (idx == NO_POS) {
endsWithSep = false;
i = len;
} else {
endsWithSep = true;
i = idx + 1;
}
}
StringBuilder::Ptr normal = StringBuilder::create();
if (absolute)
normal->appendChar(SEP);
Size numDirs = dirs->size();
for (Size i = 0; i < numDirs; i++) {
if (i) normal->appendChar(SEP);
normal->appendStr(dirs->getTyped(i));
}
if (numDirs > 0 && endsWithSep)
normal->appendChar(SEP);
if (normal->length() == 0) {
return symCurrent;
} else {
return normal->toString();
}
}