From 522b113a752a8e86932eebdc41ba07e058950e41 Mon Sep 17 00:00:00 2001 From: Daniel Dunbar Date: Sat, 17 Oct 2009 20:43:08 +0000 Subject: Add raw_ostream::write_escaped, for writing escaped strings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84355 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Support/raw_ostream.cpp | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'lib/Support/raw_ostream.cpp') diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp index 0a82cc1..31451cc 100644 --- a/lib/Support/raw_ostream.cpp +++ b/lib/Support/raw_ostream.cpp @@ -168,6 +168,40 @@ raw_ostream &raw_ostream::write_hex(unsigned long long N) { return write(CurPtr, EndPtr-CurPtr); } +raw_ostream &raw_ostream::write_escaped(StringRef Str) { + for (unsigned i = 0, e = Str.size(); i != e; ++i) { + unsigned char c = Str[i]; + + switch (c) { + case '\\': + *this << '\\' << '\\'; + break; + case '\t': + *this << '\\' << 't'; + break; + case '\n': + *this << '\\' << 'n'; + break; + case '"': + *this << '\\' << '"'; + break; + default: + if (std::isprint(c)) { + *this << c; + break; + } + + // Always expand to a 3-character octal escape. + *this << '\\'; + *this << char('0' + ((c >> 6) & 7)); + *this << char('0' + ((c >> 3) & 7)); + *this << char('0' + ((c >> 0) & 7)); + } + } + + return *this; +} + raw_ostream &raw_ostream::operator<<(const void *P) { *this << '0' << 'x'; -- cgit v1.1