-//===-- 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 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];
- char *BufPtr = Buffer+39;
+/// hexdigit - Return the (uppercase) hexadecimal character for the
+/// given number \arg X (which should be less than 16).
+static inline char hexdigit(unsigned X) {
+ return X < 10 ? '0' + X : 'A' + X - 10;
+}
- *BufPtr = 0; // Null terminate buffer...
- if (X == 0) *--BufPtr = '0'; // Handle special case...
+/// utohex_buffer - Emit the specified number into the buffer specified by
+/// BufferEnd, returning a pointer to the start of the string. This can be used
+/// like this: (note that the buffer must be large enough to handle any number):
+/// char Buffer[40];
+/// printf("0x%s", utohex_buffer(X, Buffer+40));
+///
+/// This should only be used with unsigned types.
+///
+template<typename IntTy>
+static inline char *utohex_buffer(IntTy X, char *BufferEnd) {
+ char *BufPtr = BufferEnd;
+ *--BufPtr = 0; // Null terminate buffer.
+ if (X == 0) {
+ *--BufPtr = '0'; // Handle special case.
+ return BufPtr;
+ }
while (X) {
- unsigned Mod = X & 15;
- if (Mod < 10)
- *--BufPtr = '0' + Mod;
- else
- *--BufPtr = 'A' + Mod-10;
+ unsigned char Mod = static_cast<unsigned char>(X) & 15;
+ *--BufPtr = hexdigit(Mod);
X >>= 4;
}
- return std::string(BufPtr);
+ return BufPtr;
}
-static inline std::string utostr(unsigned long long X, bool isNeg = false) {
+static inline std::string utohexstr(uint64_t X) {
char Buffer[40];
- char *BufPtr = Buffer+39;
+ return utohex_buffer(X, Buffer+40);
+}
+
+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(uint64_t X, bool isNeg = false) {
+ if (X == uint32_t(X))
+ return utostr_32(uint32_t(X), isNeg);
-static inline std::string utostr(unsigned long X, bool isNeg = false) {
- return utostr((unsigned long long)X, isNeg);
-}
-
-static inline std::string utostr(unsigned X, bool isNeg = false) {
- char Buffer[20];
- char *BufPtr = Buffer+19;
+ 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 itohexstr(int64_t X) {
+ return utohexstr(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(const APFloat& V) {
+ if (&V.getSemantics() == &APFloat::IEEEdouble)
+ return ftostr(V.convertToDouble());
+ else if (&V.getSemantics() == &APFloat::IEEEsingle)
+ return ftostr((double)V.convertToFloat());
+ return "<unknown format in ftostr>"; // 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;
+}
+
+static inline std::string UppercaseString(const std::string &S) {
+ std::string result(S);
+ for (unsigned i = 0; i < S.length(); ++i)
+ if (islower(result[i]))
+ result[i] = char(toupper(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 = static_cast<unsigned>(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 = 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
#endif
projects / oota-llvm.git / blobdiff