-//===-- Support/StringExtras.h - Useful string functions --------*- C++ -*-===//
+//===-- llvm/ADT/StringExtras.h - Useful string functions -------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file contains some functions that are useful when dealing with strings.
//
//===----------------------------------------------------------------------===//
-#ifndef SUPPORT_STRINGEXTRAS_H
-#define SUPPORT_STRINGEXTRAS_H
+#ifndef LLVM_ADT_STRINGEXTRAS_H
+#define LLVM_ADT_STRINGEXTRAS_H
-#include "Support/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/ADT/APFloat.h"
+#include <cctype>
+#include <cstdio>
#include <string>
-#include <stdio.h>
+#include <vector>
+
+namespace llvm {
static inline std::string utohexstr(uint64_t X) {
char Buffer[40];
if (X == 0) *--BufPtr = '0'; // Handle special case...
while (X) {
- unsigned Mod = X & 15;
+ unsigned char Mod = static_cast<unsigned char>(X) & 15;
if (Mod < 10)
*--BufPtr = '0' + Mod;
else
return std::string(BufPtr);
}
-static inline std::string utostr(uint64_t X, bool isNeg = false) {
- char Buffer[40];
- char *BufPtr = Buffer+39;
+static inline std::string utostr_32(uint32_t X, bool isNeg = false) {
+ char Buffer[20];
+ char *BufPtr = Buffer+19;
*BufPtr = 0; // Null terminate buffer...
if (X == 0) *--BufPtr = '0'; // Handle special case...
while (X) {
- *--BufPtr = '0' + (X % 10);
+ *--BufPtr = '0' + char(X % 10);
X /= 10;
}
return std::string(BufPtr);
}
-static inline std::string itostr(int64_t X) {
- if (X < 0)
- return utostr((uint64_t)-X, true);
- else
- return utostr((uint64_t)X);
-}
-
-
-static inline std::string utostr(unsigned X, bool isNeg = false) {
- char Buffer[20];
- char *BufPtr = Buffer+19;
-
+static inline std::string utostr(uint64_t X, bool isNeg = false) {
+ if (X == uint32_t(X))
+ return utostr_32(uint32_t(X), isNeg);
+
+ char Buffer[40];
+ char *BufPtr = Buffer+39;
+
*BufPtr = 0; // Null terminate buffer...
if (X == 0) *--BufPtr = '0'; // Handle special case...
-
+
while (X) {
- *--BufPtr = '0' + (X % 10);
+ *--BufPtr = '0' + char(X % 10);
X /= 10;
}
-
+
if (isNeg) *--BufPtr = '-'; // Add negative sign...
-
return std::string(BufPtr);
}
-static inline std::string itostr(int X) {
- if (X < 0)
- return utostr((unsigned)-X, true);
+
+static inline std::string itostr(int64_t X) {
+ if (X < 0)
+ return utostr(static_cast<uint64_t>(-X), true);
else
- return utostr((unsigned)X);
+ return utostr(static_cast<uint64_t>(X));
}
static inline std::string ftostr(double V) {
char Buffer[200];
- snprintf(Buffer, 200, "%20.6e", V);
- return Buffer;
+ sprintf(Buffer, "%20.6e", V);
+ char *B = Buffer;
+ while (*B == ' ') ++B;
+ return B;
+}
+
+static inline std::string ftostr(APFloat V) {
+ if (&V.getSemantics() == &APFloat::IEEEsingle)
+ return ftostr(V.convertToDouble());
+ else if (&V.getSemantics() == &APFloat::IEEEdouble)
+ return ftostr((double)V.convertToFloat());
+ return 0; // error
+}
+
+static inline std::string LowercaseString(const std::string &S) {
+ std::string result(S);
+ for (unsigned i = 0; i < S.length(); ++i)
+ if (isupper(result[i]))
+ result[i] = char(tolower(result[i]));
+ return result;
+}
+
+/// StringsEqualNoCase - Return true if the two strings are equal, ignoring
+/// case.
+static inline bool StringsEqualNoCase(const std::string &LHS,
+ const std::string &RHS) {
+ if (LHS.size() != RHS.size()) return false;
+ for (unsigned i = 0, e = LHS.size(); i != e; ++i)
+ if (tolower(LHS[i]) != tolower(RHS[i])) return false;
+ return true;
}
+/// 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 = 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?
+}
+
+/// 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
+
#endif
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