Created
August 28, 2020 05:51
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static int OriginalStrBuf() | |
{ | |
static int idx = std::ios_base::xalloc(); | |
return idx; | |
} | |
std::unordered_map<std::streambuf*, std::shared_ptr<std::streambuf>> replacementStrBufs; | |
// swap it back | |
struct ConsoleBuf : public std::streambuf | |
{ | |
std::ostream* fwd = nullptr; | |
ConsoleBuf(std::ostream& os) : | |
fwd(&os) | |
{ | |
} | |
int overflow(int c) | |
{ | |
//assert(fwd); | |
if (c != EOF && fwd != nullptr) | |
{ | |
std::ostream& os = (*fwd); | |
std::streambuf* originalStrb = (std::streambuf*)os.pword(OriginalStrBuf()); | |
assert(originalStrb); | |
originalStrb->sputc(c); | |
switch (c) | |
{ | |
case '\n': | |
{ | |
const char* rset = "\033[0m"; | |
originalStrb->sputn(rset, strlen(rset)); | |
if (os.pword(OriginalStrBuf())) | |
{ | |
os.rdbuf(originalStrb); | |
fwd = nullptr; | |
//replacementStrBufs.erase(originalStrb); | |
return c; | |
} | |
break; | |
} | |
default: | |
{ | |
break; | |
} | |
} | |
} | |
return c; | |
} | |
virtual ~ConsoleBuf() | |
{ | |
} | |
}; | |
std::ostream& error (std::ostream& os) | |
{ | |
if (!os.pword(OriginalStrBuf())) | |
{ | |
os.pword(OriginalStrBuf()) = os.rdbuf(); | |
} | |
std::shared_ptr<std::streambuf> sp(new ConsoleBuf(os)); | |
replacementStrBufs[os.rdbuf()] = sp; | |
os.rdbuf(sp.get()); | |
return os << "\033[1;35m"; | |
} | |
int main(void) | |
{ | |
std::cout << " HELLO \033[1;31mbold red text\033[0m\n" << std::endl; | |
std::cout << " HELOOOOOO " << error << " ello ello ello \n ello ello ello ello " << std::endl; | |
std::cout << " HELLO \033[1;31mbold red text\033[0m\n" << std::endl; | |
return 0; | |
} |
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