+/// StringsEqualNoCase - Return true if the two strings are equal, ignoring
+/// case.
+static inline bool StringsEqualNoCase(const std::string &LHS,
+ const char *RHS) {
+ for (unsigned i = 0, e = static_cast<unsigned>(LHS.size()); i != e; ++i) {
+ if (RHS[i] == 0) return false; // RHS too short.
+ if (tolower(LHS[i]) != tolower(RHS[i])) return false;
+ }
+ return RHS[LHS.size()] == 0; // Not too long?
+}
+
+/// StringsEqualNoCase - Return true if the two null-terminated C strings are
+/// equal, ignoring
+
+static inline bool StringsEqualNoCase(const char *LHS, const char *RHS,
+ unsigned len) {
+
+ for (unsigned i = 0; i < len; ++i) {
+ if (tolower(LHS[i]) != tolower(RHS[i]))
+ return false;
+
+ // If RHS[i] == 0 then LHS[i] == 0 or otherwise we would have returned
+ // at the previous branch as tolower('\0') == '\0'.
+ if (RHS[i] == 0)
+ return true;
+ }
+
+ return true;
+}
+
+/// CStrInCStrNoCase - Portable version of strcasestr. Locates the first
+/// occurance of c-string 's2' in string 's1', ignoring case. Returns
+/// NULL if 's2' cannot be found.
+static inline const char* CStrInCStrNoCase(const char *s1, const char *s2) {
+
+ // Are either strings NULL or empty?
+ if (!s1 || !s2 || s1[0] == '\0' || s2[0] == '\0')
+ return 0;
+
+ if (s1 == s2)
+ return s1;
+
+ const char *I1=s1, *I2=s2;
+
+ while (*I1 != '\0' && *I2 != '\0' )
+ if (tolower(*I1) != tolower(*I2)) { // No match. Start over.
+ ++s1; I1 = s1; I2 = s2;
+ }
+ else { // Character match. Advance to the next character.
+ ++I1; ++I2;
+ }
+
+ // If we exhausted all of the characters in 's2', then 's2' appears in 's1'.
+ return *I2 == '\0' ? s1 : 0;
+}
+
+/// 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 Source source string is updated in place to remove the returned string
+/// and any delimiter prefix from it.
+std::string getToken(std::string &Source,
+ const char *Delimiters = " \t\n\v\f\r");
+
+/// SplitString - Split up the specified string according to the specified
+/// delimiters, appending the result fragments to the output list.
+void SplitString(const std::string &Source,
+ std::vector<std::string> &OutFragments,
+ const char *Delimiters = " \t\n\v\f\r");
+
+/// UnescapeString - Modify the argument string, turning two character sequences
+/// like '\\' 'n' into '\n'. This handles: \e \a \b \f \n \r \t \v \' \\ and
+/// \num (where num is a 1-3 byte octal value).
+void UnescapeString(std::string &Str);
+
+/// EscapeString - Modify the argument string, turning '\\' and anything that
+/// doesn't satisfy std::isprint into an escape sequence.
+void EscapeString(std::string &Str);
+
+} // End llvm namespace
+