430 lines
12 KiB
C++
430 lines
12 KiB
C++
// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
|
|
|
|
#ifndef NV_CORE_STRING_H
|
|
#define NV_CORE_STRING_H
|
|
|
|
#include "debug.h"
|
|
#include "hash.h" // hash
|
|
|
|
//#include <string.h> // strlen, etc.
|
|
|
|
#if NV_OS_WIN32
|
|
#define NV_PATH_SEPARATOR '\\'
|
|
#else
|
|
#define NV_PATH_SEPARATOR '/'
|
|
#endif
|
|
|
|
namespace nv
|
|
{
|
|
|
|
NVCORE_API uint strHash(const char * str, uint h) NV_PURE;
|
|
|
|
/// String hash based on Bernstein's hash.
|
|
inline uint strHash(const char * data, uint h = 5381)
|
|
{
|
|
uint i = 0;
|
|
while(data[i] != 0) {
|
|
h = (33 * h) ^ uint(data[i]);
|
|
i++;
|
|
}
|
|
return h;
|
|
}
|
|
|
|
template <> struct Hash<const char *> {
|
|
uint operator()(const char * str) const { return strHash(str); }
|
|
};
|
|
|
|
NVCORE_API uint strLen(const char * str) NV_PURE; // Asserts on NULL strings.
|
|
|
|
NVCORE_API int strDiff(const char * s1, const char * s2) NV_PURE; // Asserts on NULL strings.
|
|
NVCORE_API int strCaseDiff(const char * s1, const char * s2) NV_PURE; // Asserts on NULL strings.
|
|
NVCORE_API bool strEqual(const char * s1, const char * s2) NV_PURE; // Accepts NULL strings.
|
|
NVCORE_API bool strCaseEqual(const char * s1, const char * s2) NV_PURE; // Accepts NULL strings.
|
|
|
|
template <> struct Equal<const char *> {
|
|
bool operator()(const char * a, const char * b) const { return strEqual(a, b); }
|
|
};
|
|
|
|
NVCORE_API bool strBeginsWith(const char * dst, const char * prefix) NV_PURE;
|
|
NVCORE_API bool strEndsWith(const char * dst, const char * suffix) NV_PURE;
|
|
|
|
|
|
NVCORE_API void strCpy(char * dst, uint size, const char * src);
|
|
NVCORE_API void strCpy(char * dst, uint size, const char * src, uint len);
|
|
NVCORE_API void strCat(char * dst, uint size, const char * src);
|
|
|
|
NVCORE_API const char * strSkipWhiteSpace(const char * str);
|
|
NVCORE_API char * strSkipWhiteSpace(char * str);
|
|
|
|
NVCORE_API bool strMatch(const char * str, const char * pat) NV_PURE;
|
|
|
|
NVCORE_API bool isNumber(const char * str) NV_PURE;
|
|
|
|
/* @@ Implement these two functions and modify StringBuilder to use them?
|
|
NVCORE_API void strFormat(const char * dst, const char * fmt, ...);
|
|
NVCORE_API void strFormatList(const char * dst, const char * fmt, va_list arg);
|
|
|
|
template <size_t count> void strFormatSafe(char (&buffer)[count], const char *fmt, ...) __attribute__((format (printf, 2, 3)));
|
|
template <size_t count> void strFormatSafe(char (&buffer)[count], const char *fmt, ...) {
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
strFormatList(buffer, count, fmt, args);
|
|
va_end(args);
|
|
}
|
|
template <size_t count> void strFormatListSafe(char (&buffer)[count], const char *fmt, va_list arg) {
|
|
va_list tmp;
|
|
va_copy(tmp, args);
|
|
strFormatList(buffer, count, fmt, tmp);
|
|
va_end(tmp);
|
|
}*/
|
|
|
|
template <int count> void strCpySafe(char (&buffer)[count], const char *src) {
|
|
strCpy(buffer, count, src);
|
|
}
|
|
|
|
template <int count> void strCatSafe(char (&buffer)[count], const char * src) {
|
|
strCat(buffer, count, src);
|
|
}
|
|
|
|
|
|
|
|
/// String builder.
|
|
class NVCORE_CLASS StringBuilder
|
|
{
|
|
public:
|
|
|
|
StringBuilder();
|
|
explicit StringBuilder( uint size_hint );
|
|
StringBuilder(const char * str);
|
|
StringBuilder(const char * str, uint len);
|
|
StringBuilder(const StringBuilder & other);
|
|
|
|
~StringBuilder();
|
|
|
|
StringBuilder & format( const char * format, ... ) __attribute__((format (printf, 2, 3)));
|
|
StringBuilder & formatList( const char * format, va_list arg );
|
|
|
|
StringBuilder & append(const char * str);
|
|
StringBuilder & append(const char * str, uint len);
|
|
StringBuilder & appendFormat(const char * format, ...) __attribute__((format (printf, 2, 3)));
|
|
StringBuilder & appendFormatList(const char * format, va_list arg);
|
|
|
|
StringBuilder & appendSpace(uint n);
|
|
|
|
StringBuilder & number( int i, int base = 10 );
|
|
StringBuilder & number( uint i, int base = 10 );
|
|
|
|
StringBuilder & reserve(uint size_hint);
|
|
StringBuilder & copy(const char * str);
|
|
StringBuilder & copy(const char * str, uint len);
|
|
StringBuilder & copy(const StringBuilder & str);
|
|
|
|
StringBuilder & toLower();
|
|
StringBuilder & toUpper();
|
|
|
|
bool endsWith(const char * str) const;
|
|
bool beginsWith(const char * str) const;
|
|
|
|
char * reverseFind(char c);
|
|
|
|
void reset();
|
|
bool isNull() const { return m_size == 0; }
|
|
|
|
// const char * accessors
|
|
//operator const char * () const { return m_str; }
|
|
//operator char * () { return m_str; }
|
|
const char * str() const { return m_str; }
|
|
char * str() { return m_str; }
|
|
|
|
char * release();
|
|
|
|
/// Implement value semantics.
|
|
StringBuilder & operator=( const StringBuilder & s ) {
|
|
return copy(s);
|
|
}
|
|
|
|
/// Implement value semantics.
|
|
StringBuilder & operator=( const char * s ) {
|
|
return copy(s);
|
|
}
|
|
|
|
/// Equal operator.
|
|
bool operator==( const StringBuilder & s ) const {
|
|
return strMatch(s.m_str, m_str);
|
|
}
|
|
|
|
/// Return the exact length.
|
|
uint length() const { return isNull() ? 0 : strLen(m_str); }
|
|
|
|
/// Return the size of the string container.
|
|
uint capacity() const { return m_size; }
|
|
|
|
/// Return the hash of the string.
|
|
uint hash() const { return isNull() ? 0 : strHash(m_str); }
|
|
|
|
// Swap strings.
|
|
friend void swap(StringBuilder & a, StringBuilder & b);
|
|
|
|
protected:
|
|
|
|
/// Size of the string container.
|
|
uint m_size;
|
|
|
|
/// String.
|
|
char * m_str;
|
|
|
|
};
|
|
|
|
|
|
/// Path string. @@ This should be called PathBuilder.
|
|
class NVCORE_CLASS Path : public StringBuilder
|
|
{
|
|
public:
|
|
Path() : StringBuilder() {}
|
|
explicit Path(int size_hint) : StringBuilder(size_hint) {}
|
|
Path(const char * str) : StringBuilder(str) {}
|
|
Path(const Path & path) : StringBuilder(path) {}
|
|
|
|
const char * fileName() const;
|
|
const char * extension() const;
|
|
|
|
void translatePath(char pathSeparator = NV_PATH_SEPARATOR);
|
|
|
|
void appendSeparator(char pathSeparator = NV_PATH_SEPARATOR);
|
|
|
|
void stripFileName();
|
|
void stripExtension();
|
|
|
|
// statics
|
|
NVCORE_API static char separator();
|
|
NVCORE_API static const char * fileName(const char *);
|
|
NVCORE_API static const char * extension(const char *);
|
|
|
|
NVCORE_API static void translatePath(char * path, char pathSeparator = NV_PATH_SEPARATOR);
|
|
};
|
|
|
|
|
|
/// String class.
|
|
class NVCORE_CLASS String
|
|
{
|
|
public:
|
|
|
|
/// Constructs a null string. @sa isNull()
|
|
String()
|
|
{
|
|
data = NULL;
|
|
}
|
|
|
|
/// Constructs a shared copy of str.
|
|
String(const String & str)
|
|
{
|
|
data = str.data;
|
|
if (data != NULL) addRef();
|
|
}
|
|
|
|
/// Constructs a shared string from a standard string.
|
|
String(const char * str)
|
|
{
|
|
setString(str);
|
|
}
|
|
|
|
/// Constructs a shared string from a standard string.
|
|
String(const char * str, int length)
|
|
{
|
|
setString(str, length);
|
|
}
|
|
|
|
/// Constructs a shared string from a StringBuilder.
|
|
String(const StringBuilder & str)
|
|
{
|
|
setString(str);
|
|
}
|
|
|
|
/// Dtor.
|
|
~String()
|
|
{
|
|
release();
|
|
}
|
|
|
|
String clone() const;
|
|
|
|
/// Release the current string and allocate a new one.
|
|
const String & operator=( const char * str )
|
|
{
|
|
release();
|
|
setString( str );
|
|
return *this;
|
|
}
|
|
|
|
/// Release the current string and allocate a new one.
|
|
const String & operator=( const StringBuilder & str )
|
|
{
|
|
release();
|
|
setString( str );
|
|
return *this;
|
|
}
|
|
|
|
/// Implement value semantics.
|
|
String & operator=( const String & str )
|
|
{
|
|
if (str.data != data)
|
|
{
|
|
release();
|
|
data = str.data;
|
|
addRef();
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
/// Equal operator.
|
|
bool operator==( const String & str ) const
|
|
{
|
|
return strMatch(str.data, data);
|
|
}
|
|
|
|
/// Equal operator.
|
|
bool operator==( const char * str ) const
|
|
{
|
|
return strMatch(str, data);
|
|
}
|
|
|
|
/// Not equal operator.
|
|
bool operator!=( const String & str ) const
|
|
{
|
|
return !strMatch(str.data, data);
|
|
}
|
|
|
|
/// Not equal operator.
|
|
bool operator!=( const char * str ) const
|
|
{
|
|
return !strMatch(str, data);
|
|
}
|
|
|
|
/// Returns true if this string is the null string.
|
|
bool isNull() const { return data == NULL; }
|
|
|
|
/// Return the exact length.
|
|
uint length() const { nvDebugCheck(data != NULL); return strLen(data); }
|
|
|
|
/// Return the hash of the string.
|
|
uint hash() const { nvDebugCheck(data != NULL); return strHash(data); }
|
|
|
|
/// const char * cast operator.
|
|
operator const char * () const { return data; }
|
|
|
|
/// Get string pointer.
|
|
const char * str() const { return data; }
|
|
|
|
|
|
private:
|
|
|
|
// Add reference count.
|
|
void addRef();
|
|
|
|
// Decrease reference count.
|
|
void release();
|
|
|
|
uint16 getRefCount() const
|
|
{
|
|
nvDebugCheck(data != NULL);
|
|
return *reinterpret_cast<const uint16 *>(data - 2);
|
|
}
|
|
|
|
void setRefCount(uint16 count) {
|
|
nvDebugCheck(data != NULL);
|
|
nvCheck(count < 0xFFFF);
|
|
*reinterpret_cast<uint16 *>(const_cast<char *>(data - 2)) = uint16(count);
|
|
}
|
|
|
|
void setData(const char * str) {
|
|
data = str + 2;
|
|
}
|
|
|
|
void allocString(const char * str)
|
|
{
|
|
allocString(str, strLen(str));
|
|
}
|
|
|
|
void allocString(const char * str, uint length);
|
|
|
|
void setString(const char * str);
|
|
void setString(const char * str, uint length);
|
|
void setString(const StringBuilder & str);
|
|
|
|
// Swap strings.
|
|
friend void swap(String & a, String & b);
|
|
|
|
private:
|
|
|
|
const char * data;
|
|
|
|
};
|
|
|
|
template <> struct Hash<String> {
|
|
uint operator()(const String & str) const { return str.hash(); }
|
|
};
|
|
|
|
|
|
// Like AutoPtr, but for const char strings.
|
|
class AutoString
|
|
{
|
|
NV_FORBID_COPY(AutoString);
|
|
NV_FORBID_HEAPALLOC();
|
|
public:
|
|
|
|
// Ctor.
|
|
AutoString(const char * p = NULL) : m_ptr(p) { }
|
|
|
|
#if NV_CC_CPP11
|
|
// Move ctor.
|
|
AutoString(AutoString && ap) : m_ptr(ap.m_ptr) { ap.m_ptr = NULL; }
|
|
#endif
|
|
|
|
// Dtor. Deletes owned pointer.
|
|
~AutoString() {
|
|
delete [] m_ptr;
|
|
m_ptr = NULL;
|
|
}
|
|
|
|
// Delete owned pointer and assign new one.
|
|
void operator=(const char * p) {
|
|
if (p != m_ptr)
|
|
{
|
|
delete [] m_ptr;
|
|
m_ptr = p;
|
|
}
|
|
}
|
|
|
|
// Get pointer.
|
|
const char * ptr() const { return m_ptr; }
|
|
operator const char *() const { return m_ptr; }
|
|
|
|
// Relinquish ownership of the underlying pointer and returns that pointer.
|
|
const char * release() {
|
|
const char * tmp = m_ptr;
|
|
m_ptr = NULL;
|
|
return tmp;
|
|
}
|
|
|
|
// comparison operators.
|
|
friend bool operator == (const AutoString & ap, const char * const p) {
|
|
return (ap.ptr() == p);
|
|
}
|
|
friend bool operator != (const AutoString & ap, const char * const p) {
|
|
return (ap.ptr() != p);
|
|
}
|
|
friend bool operator == (const char * const p, const AutoString & ap) {
|
|
return (ap.ptr() == p);
|
|
}
|
|
friend bool operator != (const char * const p, const AutoString & ap) {
|
|
return (ap.ptr() != p);
|
|
}
|
|
|
|
private:
|
|
const char * m_ptr;
|
|
};
|
|
|
|
} // nv namespace
|
|
|
|
#endif // NV_CORE_STRING_H
|