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add str escape

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This commit is contained in:
blueloveTH 2022-11-13 16:04:12 +08:00
parent d352aca6af
commit 53b33eb2f2
2 changed files with 30 additions and 4 deletions
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6
src/pocketpy.h
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@ -301,14 +301,12 @@ void __initializeBuiltinFunctions(VM* _vm) {
_vm->bindMethod("str", "__repr__", [](VM* vm, PyVarList args) {
const _Str& _self = vm->PyStr_AS_C(args[0]);
// we just do a simple repr here, no escaping
return vm->PyStr("'" + _self.str() + "'");
return vm->PyStr("'" + _self.__escape(true).str() + "'");
});
_vm->bindMethod("str", "__json__", [](VM* vm, PyVarList args) {
const _Str& _self = vm->PyStr_AS_C(args[0]);
// we just do a simple repr here, no escaping
return vm->PyStr('"' + _self.str() + '"');
return vm->PyStr("\"" + _self.__escape(false) + "\"");
});
_vm->bindMethod("str", "__eq__", [](VM* vm, PyVarList args) {

28
src/str.h
View File

@ -135,6 +135,34 @@ public:
}));
return _Str(copy);
}
_Str __escape(bool single_quote) const {
_StrStream ss;
for (auto c = _s.cbegin(); c != _s.cend(); c++) {
switch (*c) {
case '"':
if(!single_quote) ss << '\\';
ss << '"';
break;
case '\'':
if(single_quote) ss << '\\';
ss << '\'';
break;
case '\\': ss << '\\' << '\\'; break;
case '\n': ss << "\\n"; break;
case '\r': ss << "\\r"; break;
case '\t': ss << "\\t"; break;
default:
if ('\x00' <= *c && *c <= '\x1f') {
ss << "\\u"
<< std::hex << std::setw(4) << std::setfill('0') << static_cast<int>(*c);
} else {
ss << *c;
}
}
}
return ss.str();
}
};