include/llvm/Support/StringExtras.h

//===-- StringExtras.h - Useful string functions -----------------*- C++ -*--=//
//
// This file contains some functions that are useful when dealing with strings.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TOOLS_STRING_EXTRAS_H
#define LLVM_TOOLS_STRING_EXTRAS_H

#include <string>
#include <stdio.h>
#include "llvm/Support/DataTypes.h"

class ConstPoolArray;

static inline string utostr(uint64_t X, bool isNeg = false) {
  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);
    X /= 10;
  }

  if (isNeg) *--BufPtr = '-';   // Add negative sign...

  return string(BufPtr);
}

static inline string itostr(int64_t X) {
  if (X < 0) 
    return utostr((uint64_t)-X, true);
  else
    return utostr((uint64_t)X);
}


static inline string utostr(unsigned 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);
    X /= 10;
  }

  if (isNeg) *--BufPtr = '-';   // Add negative sign...

  return string(BufPtr);
}

static inline string itostr(int X) {
  if (X < 0) 
    return utostr((unsigned)-X, true);
  else
    return utostr((unsigned)X);
}

static inline string ftostr(double V) {
  char Buffer[200];
  snprintf(Buffer, 200, "%e", V);
  return Buffer;
}

static inline void
printIndent(unsigned int indent, ostream& os=cout, const char* const istr="  ")
{
  for (unsigned i=0; i < indent; i++)
    os << istr;
}

// Can we treat the specified array as a string?  Only if it is an array of
// ubytes or non-negative sbytes.
//
bool isStringCompatible(ConstPoolArray *CPA);

// getAsCString - Return the specified array as a C compatible string, only if
// the predicate isStringCompatible is true.
//
string getAsCString(ConstPoolArray *CPA);

#endif