Variant c_Collator::t_compare(CStrRef str1, CStrRef str2) {
INSTANCE_METHOD_INJECTION_BUILTIN(Collator, Collator::compare);
if (!m_ucoll) {
raise_warning("compare called on uninitialized Collator object");
return 0;
}
UChar* ustr1 = NULL;
UChar* ustr2 = NULL;
int ustr1_len = 0;
int ustr2_len = 0;
m_errcode.clear();
intl_convert_utf8_to_utf16(&ustr1, &ustr1_len,
str1.data(), str1.length(),
&(m_errcode.code));
if (U_FAILURE(m_errcode.code)) {
free(ustr1);
return false;
}
intl_convert_utf8_to_utf16(&ustr2, &ustr2_len,
str2.data(), str2.length(),
&(m_errcode.code));
if (U_FAILURE(m_errcode.code)) {
free(ustr1);
free(ustr2);
return false;
}
int64 ret = ucol_strcoll(m_ucoll, ustr1, ustr1_len, ustr2, ustr2_len);
free(ustr1);
free(ustr2);
return ret;
}
Variant f_bzcompress(CStrRef source, int blocksize /* = 4 */,
int workfactor /* = 0 */) {
char *dest = NULL;
int error;
unsigned int source_len, dest_len;
source_len = source.length();
dest_len = source.length() + (0.01*source.length()) + 600;
if (!(dest = (char *)malloc(dest_len + 1))) {
return BZ_MEM_ERROR;
}
error = BZ2_bzBuffToBuffCompress(dest, &dest_len, (char *) source.c_str(),
source_len, blocksize, 0, workfactor);
if (error != BZ_OK) {
free(dest);
return error;
} else {
// this is to shrink the allocation, since we probably over allocated
dest = (char *)realloc(dest, dest_len + 1);
dest[dest_len] = '\0';
String ret = String(dest, dest_len, AttachString);
return ret;
}
}
String f_icu_transliterate(CStrRef str, bool remove_accents) {
#if HAVE_OLD_LIBICU
// inspired by the UnicodeString::setToUTF8 implementation
int32_t length = str.length();
int32_t bytesWritten=0;
UnicodeString u_str;
u_strFromUTF8WithSub(u_str.getBuffer(length+1), length+1, &bytesWritten,
str.data(), length, 0xfffd, NULL, NULL);
u_str.releaseBuffer(bytesWritten);
#else
UnicodeString u_str = UnicodeString::fromUTF8(str.data());
#endif
if (remove_accents) {
s_transliterator->transliterate(u_str);
} else {
s_transliterator->transliterate_with_accents(u_str);
}
// Convert the UnicodeString back into a UTF8 String.
#if HAVE_OLD_LIBICU
return icuStringToUTF8(u_str);
#else
int32_t capacity = u_str.countChar32() * sizeof(UChar) + 1;
char* out = (char *)malloc(capacity);
CheckedArrayByteSink bs(out, capacity);
u_str.toUTF8(bs);
return String(out, AttachString);
#endif
}
bool f_defined(CStrRef name, bool autoload /* = true */) {
if (!name.get()) return false;
const char *data = name.data();
int len = name.length();
// slice off starting backslash
bool hadInitialBackslash = false;
if (len > 0 && data[0] == '\\') {
data += 1;
len -= 1;
hadInitialBackslash = true;
}
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
Class* cls = getClassByName(data, classNameLen);
if (cls) {
String cnsName(constantName, data + len - constantName, CopyString);
return cls->clsCnsGet(cnsName.get());
}
return false;
} else {
auto* cb = autoload ? Unit::loadCns : Unit::lookupCns;
if (hadInitialBackslash) {
String s(data, len, CopyString);
return cb(s.get());
} else {
return cb(name.get());
}
}
}
Variant f_constant(CStrRef name) {
if (!name.get()) return uninit_null();
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
VM::Class* cls = getClassByName(data, classNameLen);
if (cls) {
String cnsName(constantName, data + len - constantName, CopyString);
TypedValue* tv = cls->clsCnsGet(cnsName.get());
if (tv) {
return tvAsCVarRef(tv);
}
}
raise_warning("Couldn't find constant %s", data);
return uninit_null();
} else {
TypedValue* cns = VM::Unit::loadCns(name.get());
if (cns) return tvAsVariant(cns);
return uninit_null();
}
}
bool c_Memcached::getMultiImpl(CStrRef server_key, CArrRef keys,
bool enableCas, Array *returnValue) {
vector<const char*> keysCopy;
keysCopy.reserve(keys.size());
vector<size_t> keysLengthCopy;
keysLengthCopy.reserve(keys.size());
for (ArrayIter iter(keys); iter; ++iter) {
Variant vKey = iter.second();
if (!vKey.isString()) continue;
StringData *key = vKey.getStringData();
if (key->empty()) continue;
keysCopy.push_back(key->data());
keysLengthCopy.push_back(key->size());
if (returnValue) returnValue->set(String(key), null_variant, true);
}
if (keysCopy.size() == 0) {
m_impl->rescode = q_Memcached_RES_BAD_KEY_PROVIDED;
return false;
}
memcached_behavior_set(&m_impl->memcached, MEMCACHED_BEHAVIOR_SUPPORT_CAS,
enableCas ? 1 : 0);
const char *myServerKey = server_key.empty() ? NULL : server_key.c_str();
size_t myServerKeyLen = server_key.length();
return handleError(memcached_mget_by_key(&m_impl->memcached,
myServerKey, myServerKeyLen, keysCopy.data(), keysLengthCopy.data(),
keysCopy.size()));
}
bool RequestURI::virtualFileExists(const VirtualHost *vhost,
const string &sourceRoot,
const string &pathTranslation,
CStrRef filename) {
if (filename.empty() || filename.charAt(filename.length() - 1) == '/') {
return false;
}
if (!vhost->getDocumentRoot().empty()) {
string fullname = filename.data();
if (fullname[0] == '/') {
fullname = fullname.substr(1);
} else {
fullname = pathTranslation + fullname;
}
m_path = fullname;
m_absolutePath = String(sourceRoot) + m_path;
if (StaticContentCache::TheFileCache && !fullname.empty() &&
StaticContentCache::TheFileCache->fileExists(fullname.c_str())) {
return true;
}
struct stat st;
return RuntimeOption::AllowedFiles.find(fullname.c_str()) !=
RuntimeOption::AllowedFiles.end() ||
(stat(m_absolutePath.c_str(), &st) == 0 &&
(st.st_mode & S_IFMT) == S_IFREG);
}
m_path = filename;
m_absolutePath = String(sourceRoot) + filename;
return true;
}
Variant f_constant(CStrRef name) {
if (!name.get()) return null;
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
String className(data, classNameLen, CopyString);
// translate "self" or "parent"
if (className == "self") {
String this_class = hhvm
? g_vmContext->getContextClassName()
: FrameInjection::GetClassName(true);
if (this_class.empty()) {
throw FatalErrorException("Cannot access self:: "
"when no class scope is active");
} else {
className = this_class;
}
} else if (className == "parent") {
String parent_class = hhvm
? g_vmContext->getParentContextClassName()
: FrameInjection::GetParentClassName(true);
if (parent_class.empty()) {
throw FatalErrorException("Cannot access parent");
} else {
className = parent_class;
}
}
// taking care of volatile class
if (class_exists(className)) {
return get_class_constant(className, constantName, false);
} else {
return null;
}
} else {
if (hhvm) {
TypedValue* cns = g_vmContext->getCns(name.get());
if (cns == NULL) {
if (AutoloadHandler::s_instance->autoloadConstant(name)) {
cns = g_vmContext->getCns(name.get());
}
}
if (cns) return tvAsVariant(cns);
return null;
} else {
const ClassInfo::ConstantInfo *cinfo = ClassInfo::FindConstant(name);
// system/uniquely defined scalar constant (must be valid)
if (cinfo) return cinfo->getValue();
if (!((Globals*)get_global_variables())->defined(name)) {
AutoloadHandler::s_instance->autoloadConstant(name);
}
// dynamic/redeclared constant
return ((Globals*)get_global_variables())->getConstant(name.data());
}
}
}
String StringUtil::Trim(CStrRef input, TrimType type /* = TrimBoth */,
CStrRef charlist /* = k_HPHP_TRIM_CHARLIST */) {
if (input.empty()) return input;
int len = input.size();
char *ret = string_trim(input.data(), len,
charlist.data(), charlist.length(), type);
return String(ret, len, AttachString);
}
bool c_Memcached::t_casbykey(double cas_token, CStrRef server_key, CStrRef key,
CVarRef value, int expiration /*= 0*/) {
INSTANCE_METHOD_INJECTION_BUILTIN(Memcached, Memcached::casbykey);
m_impl->rescode = q_Memcached_RES_SUCCESS;
if (key.empty()) {
m_impl->rescode = q_Memcached_RES_BAD_KEY_PROVIDED;
return false;
}
vector<char> payload; uint32 flags;
toPayload(value, payload, flags);
CStrRef myServerKey = server_key.empty() ? key : server_key;
return handleError(memcached_cas_by_key(&m_impl->memcached,
myServerKey.c_str(), myServerKey.length(), key.c_str(), key.length(),
payload.data(), payload.size(), expiration, flags, (uint64)cas_token));
}
bool c_Memcached::setOperationImpl(SetOperation op, CStrRef server_key,
CStrRef key, CVarRef value,
int expiration) {
m_impl->rescode = q_Memcached_RES_SUCCESS;
if (key.empty()) {
m_impl->rescode = q_Memcached_RES_BAD_KEY_PROVIDED;
return false;
}
vector<char> payload; uint32 flags;
toPayload(value, payload, flags);
CStrRef myServerKey = server_key.empty() ? key : server_key;
return handleError(op(&m_impl->memcached, myServerKey.c_str(),
myServerKey.length(), key.c_str(), key.length(),
payload.data(), payload.size(), expiration, flags));
}
String c_DateInterval::t_format(CStrRef format) {
INSTANCE_METHOD_INJECTION_BUILTIN(DateInterval, DateInterval::format);
StringBuffer s;
const int LENGTH = 33;
char buf[LENGTH];
int l;
bool hasFormatSpec = false;
for (int i = 0; i < format.length(); ++i) {
char c = format.charAt(i);
if (!hasFormatSpec) {
if (c == '%') {
hasFormatSpec = true;
} else {
s.append(c);
}
} else {
switch (c) {
case 'Y': l = snprintf(buf, LENGTH, "%02lld", m_y); break;
case 'y': l = snprintf(buf, LENGTH, "%lld", m_y); break;
case 'M': l = snprintf(buf, LENGTH, "%02lld", m_m); break;
case 'm': l = snprintf(buf, LENGTH, "%lld", m_m); break;
case 'D': l = snprintf(buf, LENGTH, "%02lld", m_d); break;
case 'd': l = snprintf(buf, LENGTH, "%lld", m_d); break;
case 'H': l = snprintf(buf, LENGTH, "%02lld", m_h); break;
case 'h': l = snprintf(buf, LENGTH, "%lld", m_h); break;
case 'I': l = snprintf(buf, LENGTH, "%02lld", m_i); break;
case 'i': l = snprintf(buf, LENGTH, "%lld", m_i); break;
case 'S': l = snprintf(buf, LENGTH, "%02lld", m_s); break;
case 's': l = snprintf(buf, LENGTH, "%lld", m_s); break;
case 'a': {
if (m_days.isInteger()) {
l = snprintf(buf, LENGTH, "%lld", m_days.toInt64());
} else {
l = snprintf(buf, LENGTH, "(unknown)");
}
break;
}
case 'r': l = snprintf(buf, LENGTH, "%s", m_invert ? "-" : ""); break;
case 'R': l = snprintf(buf, LENGTH, "%c", m_invert ? '-' : '+'); break;
case '%': l = snprintf(buf, 32, "%%"); break;
default: buf[0] = '%'; buf[1] = c; buf[2] = '\0'; l = 2; break;
}
s.append(buf, std::min(l, LENGTH - 1));
hasFormatSpec = false;
}
}
return s.detach();
}
Variant c_Memcached::t_getbykey(CStrRef server_key, CStrRef key,
CVarRef cache_cb /*= null_variant*/,
VRefParam cas_token /*= null_variant*/) {
INSTANCE_METHOD_INJECTION_BUILTIN(Memcached, Memcached::getbykey);
m_impl->rescode = q_Memcached_RES_SUCCESS;
if (key.empty()) {
m_impl->rescode = q_Memcached_RES_BAD_KEY_PROVIDED;
return false;
}
memcached_behavior_set(&m_impl->memcached, MEMCACHED_BEHAVIOR_SUPPORT_CAS,
cas_token.isReferenced() ? 1 : 0);
const char *myServerKey = server_key.empty() ? NULL : server_key.c_str();
size_t myServerKeyLen = server_key.length();
const char *myKey = key.c_str();
size_t myKeyLen = key.length();
memcached_return status = memcached_mget_by_key(&m_impl->memcached,
myServerKey, myServerKeyLen, &myKey, &myKeyLen, 1);
if (!handleError(status)) return false;
Variant returnValue;
MemcachedResultWrapper result(&m_impl->memcached);
if (!memcached_fetch_result(&m_impl->memcached, &result.value, &status)) {
if (status == MEMCACHED_END) status = MEMCACHED_NOTFOUND;
if (status == MEMCACHED_NOTFOUND && !cache_cb.isNull()) {
status = doCacheCallback(cache_cb, key, returnValue);
if (!handleError(status)) return false;
if (cas_token.isReferenced()) cas_token = 0.0;
return returnValue;
}
handleError(status);
return false;
}
if (!toObject(returnValue, result.value)) {
m_impl->rescode = q_Memcached_RES_PAYLOAD_FAILURE;
return false;
}
if (cas_token.isReferenced()) {
cas_token = (double) memcached_result_cas(&result.value);
}
return returnValue;
}
bool f_defined(CStrRef name, bool autoload /* = true */) {
if (!name.get()) return false;
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
String className(data, classNameLen, CopyString);
// translate "self" or "parent"
if (className == "self") {
String this_class = g_vmContext->getContextClassName();
if (this_class.empty()) {
throw FatalErrorException("Cannot access self:: "
"when no class scope is active");
} else {
className = this_class;
}
} else if (className == "parent") {
String parent_class = g_vmContext->getParentContextClassName();
if (parent_class.empty()) {
throw FatalErrorException("Cannot access parent");
} else {
className = parent_class;
}
}
if (class_exists(className)) { // taking care of volatile class
const ClassInfo *info;
for (String parentClass = className;
!parentClass.empty();
parentClass = info->getParentClass()) {
info = ClassInfo::FindClass(parentClass);
if (!info) {
assert(false);
}
if (info->hasConstant(constantName)) return true;
}
return false;
} else {
return false;
}
} else {
// system/uniquely defined scalar constant
if (ClassInfo::FindConstant(name)) return true;
if (g_vmContext->defined(name)) {
return true;
}
if (!autoload || !AutoloadHandler::s_instance->autoloadConstant(name)) {
return false;
}
return g_vmContext->defined(name);
}
}
bool c_Memcache::t_delete(CStrRef key, int expire /*= 0*/) {
if (key.empty()) {
raise_warning("Key cannot be empty");
return false;
}
memcached_return_t ret = memcached_delete(&m_memcache,
key.c_str(), key.length(),
expire);
return (ret == MEMCACHED_SUCCESS);
}
bool c_SpoofChecker::t_areconfusable(
CStrRef s1,
CStrRef s2,
VRefParam issuesFound) {
UErrorCode status = U_ZERO_ERROR;
int32_t ret = uspoof_areConfusableUTF8(
m_spoof_checker,
s1.data(),
s1.length(),
s2.data(),
s2.length(),
&status);
if (U_FAILURE(status)) {
throw Exception(
"Could not check [%s] and [%s] for confusability, error %d (%s)",
s1.c_str(), s2.c_str(), status, u_errorName(status));
}
issuesFound = ret;
return ret != 0;
}
static String intl_convert_str_utf8_to_utf16(CStrRef utf8_str,
UErrorCode * status) {
UChar* ustr = nullptr;
int ustr_len = 0;
intl_convert_utf8_to_utf16(&ustr, &ustr_len,
utf8_str.data(), utf8_str.length(),
status);
if (U_FAILURE(*status)) {
return (const char *)(L"");
}
return String((char*)ustr, UBYTES(ustr_len), AttachString);
}
static String intl_convert_str_utf16_to_utf8(CStrRef utf16_str,
UErrorCode * status) {
char* str = nullptr;
int str_len = 0;
intl_convert_utf16_to_utf8(&str, &str_len,
(UChar*)(utf16_str.data()),
UCHARS(utf16_str.length()),
status);
if (U_FAILURE(*status)) {
return "";
}
return String(str, str_len, AttachString);
}
void c_EncodingDetector::t_setdeclaredencoding(CStrRef text) {
INSTANCE_METHOD_INJECTION_BUILTIN(EncodingDetector, EncodingDetector::setdeclaredencoding);
UErrorCode status = U_ZERO_ERROR;
ucsdet_setDeclaredEncoding(
m_encoding_detector,
text.data(),
text.length(),
&status);
if (U_FAILURE(status)) {
throw Exception(
"Could not set encoding detector declared encoding to [%s], error %d (%s)",
text.c_str(), status, u_errorName(status));
}
}
Variant f_constant(CStrRef name) {
if (!name.get()) return null;
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
String className(data, classNameLen, CopyString);
// translate "self" or "parent"
if (className == "self") {
String this_class = g_vmContext->getContextClassName();
if (this_class.empty()) {
throw FatalErrorException("Cannot access self:: "
"when no class scope is active");
} else {
className = this_class;
}
} else if (className == "parent") {
String parent_class =g_vmContext->getParentContextClassName();
if (parent_class.empty()) {
throw FatalErrorException("Cannot access parent");
} else {
className = parent_class;
}
}
VM::Class* cls = VM::Unit::loadClass(className.get());
if (cls) {
String cnsName(constantName, data + len - constantName, CopyString);
TypedValue* tv = cls->clsCnsGet(cnsName.get());
if (tv) {
return tvAsCVarRef(tv);
}
}
raise_warning("Couldn't find constant %s", data);
return null;
} else {
TypedValue* cns = g_vmContext->getCns(name.get());
if (cns == NULL) {
if (AutoloadHandler::s_instance->autoloadConstant(name)) {
cns = g_vmContext->getCns(name.get());
}
}
if (cns) return tvAsVariant(cns);
return null;
}
}
bool f_defined(CStrRef name) {
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
String className(data, classNameLen, CopyString);
// translate "self" or "parent"
if (className == "self") {
String this_class = FrameInjection::GetClassName(true);
if (this_class.empty()) {
throw FatalErrorException("Cannot access self:: "
"when no class scope is active");
} else {
className = this_class;
}
} else if (className == "parent") {
CStrRef parent_class = FrameInjection::GetParentClassName(true);
if (parent_class.empty()) {
throw FatalErrorException("Cannot access parent");
} else {
className = parent_class;
}
}
if (class_exists(className)) { // taking care of volatile class
const ClassInfo *info;
for (String parentClass = className;
!parentClass.empty();
parentClass = info->getParentClass()) {
info = ClassInfo::FindClass(parentClass);
if (!info) {
ASSERT(false);
}
if (info->hasConstant(constantName)) return true;
}
return false;
} else {
return false;
}
} else {
// system/uniquely defined scalar constant
if (ClassInfo::FindConstant(name)) return true;
// dynamic/redeclared constant
return ((Globals*)get_global_variables())->defined(name);
}
}
bool c_SpoofChecker::t_issuspicious(CStrRef text, VRefParam issuesFound) {
UErrorCode status = U_ZERO_ERROR;
int32_t ret = uspoof_checkUTF8(
m_spoof_checker,
text.data(),
text.length(),
NULL,
&status);
if (U_FAILURE(status)) {
throw Exception(
"Could not check [%s] for security issues, error %d (%s)",
text.c_str(), status, u_errorName(status));
}
issuesFound = ret;
return ret != 0;
}
int64_t c_Memcache::t_decrement(CStrRef key, int offset /*= 1*/) {
if (key.empty()) {
raise_warning("Key cannot be empty");
return false;
}
uint64_t value;
memcached_return_t ret = memcached_decrement(&m_memcache, key.c_str(),
key.length(), offset, &value);
if (ret == MEMCACHED_SUCCESS) {
return (int64_t)value;
}
return false;
}
/*
* trim a string left & right space
* buf = " expires = 3000; " return "expires = 3000;"
*/
string TrimString(CStrRef buf)
{
LPCSTR p = buf.c_str();
LPCSTR q = p + buf.length();
for(; isspace(*p) && p <= q;) ++ p;
for(; (*q == '\0' || isspace(*q)) && p <= q;) -- q;
++ q;
string res;
if(p < q)
res.assign(p, q);
return res;
}
bool c_Memcache::t_replace(CStrRef key, CVarRef var, int flag /*= 0*/,
int expire /*= 0*/) {
if (key.empty()) {
raise_warning("Key cannot be empty");
return false;
}
String serialized = memcache_prepare_for_storage(var, flag);
memcached_return_t ret = memcached_replace(&m_memcache,
key.c_str(), key.length(),
serialized.c_str(),
serialized.length(),
expire, flag);
return (ret == MEMCACHED_SUCCESS);
}
Variant f_bzdecompress(CStrRef source, int small /* = 0 */) {
char *dest;
int source_len = source.length();
int error;
uint64 size = 0;
bz_stream bzs;
bzs.bzalloc = NULL;
bzs.bzfree = NULL;
if (BZ2_bzDecompressInit(&bzs, 0, small) != BZ_OK) {
return false;
}
bzs.next_in = (char *) source.c_str();
bzs.avail_in = source_len;
/* in most cases bz2 offers at least 2:1 compression, so we use that as our base */
bzs.avail_out = source_len * 2;
bzs.next_out = dest = (char *) malloc(bzs.avail_out + 1);
if (!dest) {
return BZ_MEM_ERROR;
}
while ((error = BZ2_bzDecompress(&bzs)) == BZ_OK && bzs.avail_in > 0) {
/* compression is better then 2:1, need to allocate more memory */
bzs.avail_out = source_len;
size = (bzs.total_out_hi32 * (unsigned int) -1) + bzs.total_out_lo32;
dest = (char *) Util::safe_realloc(dest, bzs.avail_out + 1);
bzs.next_out = dest + size;
}
if (error == BZ_STREAM_END || error == BZ_OK) {
size = (bzs.total_out_hi32 * (unsigned int) -1) + bzs.total_out_lo32;
dest = (char *)Util::safe_realloc(dest, size + 1);
dest[size] = '\0';
String ret = String(dest, size, AttachString);
BZ2_bzDecompressEnd(&bzs);
return ret;
} else {
free(dest);
BZ2_bzDecompressEnd(&bzs);
return error;
}
}
bool c_Memcache::t_add(CStrRef key, CVarRef var, int flag /*= 0*/,
int expire /*= 0*/) {
INSTANCE_METHOD_INJECTION_BUILTIN(Memcache, Memcache::add);
if (key.empty()) {
raise_warning("Key cannot be empty");
return false;
}
String serialized = memcache_prepare_for_storage(var, flag);
memcached_return_t ret = memcached_add(&m_memcache,
key.c_str(), key.length(),
serialized.c_str(),
serialized.length(),
expire, flag);
return (ret == MEMCACHED_SUCCESS);
}
Variant f_constant(CStrRef name) {
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
String className(data, classNameLen, CopyString);
// translate "self" or "parent"
if (className == "self") {
String this_class = FrameInjection::GetClassName(true);
if (this_class.empty()) {
throw FatalErrorException("Cannot access self:: "
"when no class scope is active");
} else {
className = this_class;
}
} else if (className == "parent") {
String parent_class = FrameInjection::GetParentClassName("constant");
if (parent_class.empty()) {
throw FatalErrorException("Cannot access parent");
} else {
className = parent_class;
}
}
// taking care of volatile class
if (class_exists(className)) {
return get_class_constant(className.c_str(), constantName, false);
} else {
return null;
}
} else {
const ClassInfo::ConstantInfo *cinfo =
ClassInfo::FindConstant(name.data());
// system/uniquely defined scalar constant (must be valid)
if (cinfo) return cinfo->value;
// dynamic/redeclared constant
return ((Globals*)get_global_variables())->getConstant(name.data());
}
}
bool f_defined(CStrRef name, bool autoload /* = true */) {
if (!name.get()) return false;
const char *data = name.data();
int len = name.length();
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
VM::Class* cls = getClassByName(data, classNameLen);
if (cls) {
String cnsName(constantName, data + len - constantName, CopyString);
return cls->clsCnsGet(cnsName.get());
}
return false;
} else {
return autoload ?
VM::Unit::loadCns(name.get()) :
VM::Unit::lookupCns(name.get());
}
}
Variant f_constant(CStrRef name) {
if (!name.get()) return uninit_null();
const char *data = name.data();
int len = name.length();
// slice off starting backslash
bool hadInitialBackslash = false;
if (len > 0 && data[0] == '\\') {
data += 1;
len -= 1;
hadInitialBackslash = true;
}
char *colon;
if ((colon = (char*)memchr(data, ':', len)) && colon[1] == ':') {
// class constant
int classNameLen = colon - data;
char *constantName = colon + 2;
Class* cls = getClassByName(data, classNameLen);
if (cls) {
String cnsName(constantName, data + len - constantName, CopyString);
TypedValue* tv = cls->clsCnsGet(cnsName.get());
if (tv) {
return tvAsCVarRef(tv);
}
}
raise_warning("Couldn't find constant %s", data);
} else {
TypedValue* cns;
if (hadInitialBackslash) {
String s(data, len, CopyString);
cns = Unit::loadCns(s.get());
} else {
cns = Unit::loadCns(name.get());
}
if (cns) return tvAsVariant(cns);
}
return uninit_null();
}