diff options
| -rw-r--r-- | include/llvm/ADT/StringExtras.h | 5 | ||||
| -rw-r--r-- | lib/Support/StringExtras.cpp | 13 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/llvm/ADT/StringExtras.h b/include/llvm/ADT/StringExtras.h index 2f5c39cad8..55a7cfb983 100644 --- a/include/llvm/ADT/StringExtras.h +++ b/include/llvm/ADT/StringExtras.h @@ -203,6 +203,11 @@ static inline const char* CStrInCStrNoCase(const char *s1, const char *s2) { return *I2 == '\0' ? s1 : 0; } +/// 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 StrInStrNoCase(StringRef s1, StringRef s2); + /// 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 diff --git a/lib/Support/StringExtras.cpp b/lib/Support/StringExtras.cpp index 2363ad60d1..7fd840b0ae 100644 --- a/lib/Support/StringExtras.cpp +++ b/lib/Support/StringExtras.cpp @@ -16,6 +16,19 @@ #include "llvm/ADT/StringExtras.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 |