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-rw-r--r--lib/Support/raw_ostream.cpp34
1 files changed, 34 insertions, 0 deletions
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';