X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FADT%2FStringExtras.h;h=e40e409802d25c1ab4b213227987c417fe7371db;hb=b141e397d52d9946e93f84c65c6b2e653b026041;hp=51df4f19f6c48156280178ec3fe51ae21bad32bb;hpb=497b52f38125adb82de547abfc4c89c2b1e1f628;p=oota-llvm.git diff --git a/include/llvm/ADT/StringExtras.h b/include/llvm/ADT/StringExtras.h index 51df4f19f6c..e40e409802d 100644 --- a/include/llvm/ADT/StringExtras.h +++ b/include/llvm/ADT/StringExtras.h @@ -1,47 +1,67 @@ -//===-- 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 +#include #include -#include -#include +#include 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 +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 char Mod = (unsigned char)X & 15; - if (Mod < 10) - *--BufPtr = '0' + Mod; - else - *--BufPtr = 'A' + Mod-10; + unsigned char Mod = static_cast(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... @@ -52,24 +72,16 @@ static inline std::string utostr(unsigned long long X, bool isNeg = false) { } if (isNeg) *--BufPtr = '-'; // Add negative sign... - return std::string(BufPtr); -} -static inline std::string itostr(int64_t X) { - if (X < 0) - return utostr(static_cast(-X), true); - else - return utostr(static_cast(X)); + return std::string(BufPtr); } +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(static_cast(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... @@ -80,31 +92,119 @@ static inline std::string utostr(unsigned X, bool isNeg = false) { } if (isNeg) *--BufPtr = '-'; // Add negative sign... - return std::string(BufPtr); } -static inline std::string itostr(int X) { - if (X < 0) - return utostr(static_cast(-X), true); + +static inline std::string itostr(int64_t X) { + if (X < 0) + return utostr(static_cast(-X), true); else - return utostr(static_cast(X)); + return utostr(static_cast(X)); +} + +static inline std::string itohexstr(int64_t X) { + return utohexstr(static_cast(X)); } static inline std::string ftostr(double V) { char Buffer[200]; sprintf(Buffer, "%20.6e", V); - return Buffer; + 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 ""; // error } -static inline std::string LowercaseString(const std::string &S) { +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]); + 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(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(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 @@ -114,6 +214,21 @@ static inline std::string LowercaseString(const std::string &S) { 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 &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