1 files changed, 90 insertions, 0 deletions

diff --git a/contrib/llvm-project/llvm/lib/Support/StringExtras.cpp b/contrib/llvm-project/llvm/lib/Support/StringExtras.cpp
new file mode 100644
index 000000000000..bf28b2be5657
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Support/StringExtras.cpp
@@ -0,0 +1,90 @@
+//===-- StringExtras.cpp - Implement the StringExtras header --------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the StringExtras.h header
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+/// StrInStrNoCase - Portable version of strcasestr.  Locates the first
+/// occurrence of string 's1' in string 's2', ignoring case.  Returns
+/// the offset of s2 in s1 or npos if s2 cannot be found.
+StringRef::size_type llvm::StrInStrNoCase(StringRef s1, StringRef s2) {
+  size_t N = s2.size(), M = s1.size();
+  if (N > M)
+    return StringRef::npos;
+  for (size_t i = 0, e = M - N + 1; i != e; ++i)
+    if (s1.substr(i, N).equals_lower(s2))
+      return i;
+  return StringRef::npos;
+}
+
+/// getToken - This function extracts one token from source, ignoring any
+/// leading characters that appear in the Delimiters string, and ending the
+/// token at any of the characters that appear in the Delimiters string.  If
+/// there are no tokens in the source string, an empty string is returned.
+/// The function returns a pair containing the extracted token and the
+/// remaining tail string.
+std::pair<StringRef, StringRef> llvm::getToken(StringRef Source,
+                                               StringRef Delimiters) {
+  // Figure out where the token starts.
+  StringRef::size_type Start = Source.find_first_not_of(Delimiters);
+
+  // Find the next occurrence of the delimiter.
+  StringRef::size_type End = Source.find_first_of(Delimiters, Start);
+
+  return std::make_pair(Source.slice(Start, End), Source.substr(End));
+}
+
+/// SplitString - Split up the specified string according to the specified
+/// delimiters, appending the result fragments to the output list.
+void llvm::SplitString(StringRef Source,
+                       SmallVectorImpl<StringRef> &OutFragments,
+                       StringRef Delimiters) {
+  std::pair<StringRef, StringRef> S = getToken(Source, Delimiters);
+  while (!S.first.empty()) {
+    OutFragments.push_back(S.first);
+    S = getToken(S.second, Delimiters);
+  }
+}
+
+void llvm::printEscapedString(StringRef Name, raw_ostream &Out) {
+  for (unsigned i = 0, e = Name.size(); i != e; ++i) {
+    unsigned char C = Name[i];
+    if (isPrint(C) && C != '\\' && C != '"')
+      Out << C;
+    else
+      Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
+  }
+}
+
+void llvm::printHTMLEscaped(StringRef String, raw_ostream &Out) {
+  for (char C : String) {
+    if (C == '&')
+      Out << "&amp;";
+    else if (C == '<')
+      Out << "&lt;";
+    else if (C == '>')
+      Out << "&gt;";
+    else if (C == '\"')
+      Out << "&quot;";
+    else if (C == '\'')
+      Out << "&apos;";
+    else
+      Out << C;
+  }
+}
+
+void llvm::printLowerCase(StringRef String, raw_ostream &Out) {
+  for (const char C : String)
+    Out << toLower(C);
+}