*/
#include "serialize.h"
+#include "pointer.h"
+#include "porting.h"
+#include "util/string.h"
+#include "exceptions.h"
+#include "irrlichttypes.h"
#include <sstream>
#include <iomanip>
+#include <vector>
+
+FloatType g_serialize_f32_type = FLOATTYPE_UNKNOWN;
+
+
+////
+//// String
+////
+
+std::string serializeString(const std::string &plain)
+{
+ std::string s;
+ char buf[2];
+
+ if (plain.size() > STRING_MAX_LEN)
+ throw SerializationError("String too long for serializeString");
+ s.reserve(2 + plain.size());
+
+ writeU16((u8 *)&buf[0], plain.size());
+ s.append(buf, 2);
+
+ s.append(plain);
+ return s;
+}
+
+std::string deSerializeString(std::istream &is)
+{
+ std::string s;
+ char buf[2];
+
+ is.read(buf, 2);
+ if (is.gcount() != 2)
+ throw SerializationError("deSerializeString: size not read");
+
+ u16 s_size = readU16((u8 *)buf);
+ if (s_size == 0)
+ return s;
+
+ s.resize(s_size);
+ is.read(&s[0], s_size);
+ if (is.gcount() != s_size)
+ throw SerializationError("deSerializeString: couldn't read all chars");
+
+ return s;
+}
+
+////
+//// Wide String
+////
+
+std::string serializeWideString(const std::wstring &plain)
+{
+ std::string s;
+ char buf[2];
+
+ if (plain.size() > WIDE_STRING_MAX_LEN)
+ throw SerializationError("String too long for serializeWideString");
+ s.reserve(2 + 2 * plain.size());
+
+ writeU16((u8 *)buf, plain.size());
+ s.append(buf, 2);
+
+ for (wchar_t i : plain) {
+ writeU16((u8 *)buf, i);
+ s.append(buf, 2);
+ }
+ return s;
+}
+
+std::wstring deSerializeWideString(std::istream &is)
+{
+ std::wstring s;
+ char buf[2];
+
+ is.read(buf, 2);
+ if (is.gcount() != 2)
+ throw SerializationError("deSerializeWideString: size not read");
+
+ u16 s_size = readU16((u8 *)buf);
+ if (s_size == 0)
+ return s;
+
+ s.reserve(s_size);
+ for (u32 i = 0; i < s_size; i++) {
+ is.read(&buf[0], 2);
+ if (is.gcount() != 2) {
+ throw SerializationError(
+ "deSerializeWideString: couldn't read all chars");
+ }
+
+ wchar_t c16 = readU16((u8 *)buf);
+ s.append(&c16, 1);
+ }
+ return s;
+}
+
+////
+//// Long String
+////
+
+std::string serializeLongString(const std::string &plain)
+{
+ std::string s;
+ char buf[4];
+
+ if (plain.size() > LONG_STRING_MAX_LEN)
+ throw SerializationError("String too long for serializeLongString");
+ s.reserve(4 + plain.size());
+
+ writeU32((u8*)&buf[0], plain.size());
+ s.append(buf, 4);
+ s.append(plain);
+ return s;
+}
+
+std::string deSerializeLongString(std::istream &is)
+{
+ std::string s;
+ char buf[4];
+
+ is.read(buf, 4);
+ if (is.gcount() != 4)
+ throw SerializationError("deSerializeLongString: size not read");
+
+ u32 s_size = readU32((u8 *)buf);
+ if (s_size == 0)
+ return s;
+
+ // We don't really want a remote attacker to force us to allocate 4GB...
+ if (s_size > LONG_STRING_MAX_LEN) {
+ throw SerializationError("deSerializeLongString: "
+ "string too long: " + itos(s_size) + " bytes");
+ }
+
+ s.resize(s_size);
+ is.read(&s[0], s_size);
+ if ((u32)is.gcount() != s_size)
+ throw SerializationError("deSerializeLongString: couldn't read all chars");
+
+ return s;
+}
+
+////
+//// JSON
+////
-// Creates a string encoded in JSON format (almost equivalent to a C string literal)
std::string serializeJsonString(const std::string &plain)
{
std::ostringstream os(std::ios::binary);
- os<<"\"";
- for(size_t i = 0; i < plain.size(); i++)
- {
- char c = plain[i];
- switch(c)
- {
- case '"': os<<"\\\""; break;
- case '\\': os<<"\\\\"; break;
- case '/': os<<"\\/"; break;
- case '\b': os<<"\\b"; break;
- case '\f': os<<"\\f"; break;
- case '\n': os<<"\\n"; break;
- case '\r': os<<"\\r"; break;
- case '\t': os<<"\\t"; break;
- default:
- {
- if(c >= 32 && c <= 126)
- {
- os<<c;
- }
- else
- {
- u32 cnum = (u32) (u8) c;
- os<<"\\u"<<std::hex<<std::setw(4)<<std::setfill('0')<<cnum;
+ os << "\"";
+
+ for (char c : plain) {
+ switch (c) {
+ case '"':
+ os << "\\\"";
+ break;
+ case '\\':
+ os << "\\\\";
+ break;
+ case '/':
+ os << "\\/";
+ break;
+ case '\b':
+ os << "\\b";
+ break;
+ case '\f':
+ os << "\\f";
+ break;
+ case '\n':
+ os << "\\n";
+ break;
+ case '\r':
+ os << "\\r";
+ break;
+ case '\t':
+ os << "\\t";
+ break;
+ default: {
+ if (c >= 32 && c <= 126) {
+ os << c;
+ } else {
+ u32 cnum = (u8)c;
+ os << "\\u" << std::hex << std::setw(4)
+ << std::setfill('0') << cnum;
}
break;
}
}
}
- os<<"\"";
+
+ os << "\"";
return os.str();
}
-// Reads a string encoded in JSON format
std::string deSerializeJsonString(std::istream &is)
{
std::ostringstream os(std::ios::binary);
// Parse initial doublequote
is >> c;
- if(c != '"')
+ if (c != '"')
throw SerializationError("JSON string must start with doublequote");
// Parse characters
- for(;;)
- {
+ for (;;) {
c = is.get();
- if(is.eof())
+ if (is.eof())
throw SerializationError("JSON string ended prematurely");
- if(c == '"')
- {
+
+ if (c == '"') {
return os.str();
}
- else if(c == '\\')
- {
+
+ if (c == '\\') {
c2 = is.get();
- if(is.eof())
+ if (is.eof())
throw SerializationError("JSON string ended prematurely");
- switch(c2)
- {
- default: os<<c2; break;
- case 'b': os<<'\b'; break;
- case 'f': os<<'\f'; break;
- case 'n': os<<'\n'; break;
- case 'r': os<<'\r'; break;
- case 't': os<<'\t'; break;
- case 'u':
- {
- char hexdigits[4+1];
+ switch (c2) {
+ case 'b':
+ os << '\b';
+ break;
+ case 'f':
+ os << '\f';
+ break;
+ case 'n':
+ os << '\n';
+ break;
+ case 'r':
+ os << '\r';
+ break;
+ case 't':
+ os << '\t';
+ break;
+ case 'u': {
+ int hexnumber;
+ char hexdigits[4 + 1];
+
is.read(hexdigits, 4);
- if(is.eof())
+ if (is.eof())
throw SerializationError("JSON string ended prematurely");
hexdigits[4] = 0;
+
std::istringstream tmp_is(hexdigits, std::ios::binary);
- int hexnumber;
tmp_is >> std::hex >> hexnumber;
- os<<((char)hexnumber);
+ os << (char)hexnumber;
break;
}
+ default:
+ os << c2;
+ break;
}
- }
- else
- {
- os<<c;
+ } else {
+ os << c;
}
}
+
return os.str();
}
+std::string serializeJsonStringIfNeeded(const std::string &s)
+{
+ for (size_t i = 0; i < s.size(); ++i) {
+ if (s[i] <= 0x1f || s[i] >= 0x7f || s[i] == ' ' || s[i] == '\"')
+ return serializeJsonString(s);
+ }
+ return s;
+}
+
+std::string deSerializeJsonStringIfNeeded(std::istream &is)
+{
+ std::ostringstream tmp_os;
+ bool expect_initial_quote = true;
+ bool is_json = false;
+ bool was_backslash = false;
+ for (;;) {
+ char c = is.get();
+ if (is.eof())
+ break;
+
+ if (expect_initial_quote && c == '"') {
+ tmp_os << c;
+ is_json = true;
+ } else if(is_json) {
+ tmp_os << c;
+ if (was_backslash)
+ was_backslash = false;
+ else if (c == '\\')
+ was_backslash = true;
+ else if (c == '"')
+ break; // Found end of string
+ } else {
+ if (c == ' ') {
+ // Found end of word
+ is.unget();
+ break;
+ }
+
+ tmp_os << c;
+ }
+ expect_initial_quote = false;
+ }
+ if (is_json) {
+ std::istringstream tmp_is(tmp_os.str(), std::ios::binary);
+ return deSerializeJsonString(tmp_is);
+ }
+
+ return tmp_os.str();
+}
projects / minetest.git / blobdiff