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#ifndef SLANG_STRING_UTIL_H
#define SLANG_STRING_UTIL_H
#include "slang-string.h"
#include "list.h"
#include <stdarg.h>
#include "../../slang-com-helper.h"
#include "../../slang-com-ptr.h"
namespace Slang {
/** A blob that uses a `String` for its storage.
*/
class StringBlob : public ISlangBlob, public RefObject
{
public:
// ISlangUnknown
SLANG_REF_OBJECT_IUNKNOWN_ALL
// ISlangBlob
SLANG_NO_THROW void const* SLANG_MCALL getBufferPointer() SLANG_OVERRIDE { return m_string.Buffer(); }
SLANG_NO_THROW size_t SLANG_MCALL getBufferSize() SLANG_OVERRIDE { return m_string.Length(); }
/// Get the contained string
SLANG_FORCE_INLINE const String& getString() const { return m_string; }
explicit StringBlob(String const& string)
: m_string(string)
{}
protected:
ISlangUnknown* getInterface(const Guid& guid);
String m_string;
};
struct StringUtil
{
/// Split in, by specified splitChar into slices out
/// Slices contents will directly address into in, so contents will only stay valid as long as in does.
static void split(const UnownedStringSlice& in, char splitChar, List<UnownedStringSlice>& slicesOut);
/// Equivalent to doing a split and then finding the index of 'find' on the array
/// Returns -1 if not found
static int indexOfInSplit(const UnownedStringSlice& in, char splitChar, const UnownedStringSlice& find);
/// Given the entry at the split index specified.
/// Will return slice with begin() == nullptr if not found or input has begin() == nullptr)
static UnownedStringSlice getAtInSplit(const UnownedStringSlice& in, char splitChar, int index);
/// Returns the size in bytes needed to hold the formatted string using the specified args, NOT including a terminating 0
/// NOTE! The caller *should* assume this will consume the va_list (use va_copy to make a copy to be consumed)
static size_t calcFormattedSize(const char* format, va_list args);
/// Calculate the formatted string using the specified args.
/// NOTE! The caller *should* assume this will consume the va_list
/// The buffer should be at least calcFormattedSize + 1 bytes. The +1 is needed because a terminating 0 is written.
static void calcFormatted(const char* format, va_list args, size_t numChars, char* dst);
/// Appends formatted string with args into buf
static void append(const char* format, va_list args, StringBuilder& buf);
/// Appends the formatted string with specified trailing args
static void appendFormat(StringBuilder& buf, const char* format, ...);
/// Create a string from the format string applying args (like sprintf)
static String makeStringWithFormat(const char* format, ...);
/// Given a string held in a blob, returns as a String
/// Returns an empty string if blob is nullptr
static String getString(ISlangBlob* blob);
/// Given a string or slice, replaces all instances of fromChar with toChar
static String calcCharReplaced(const UnownedStringSlice& slice, char fromChar, char toChar);
static String calcCharReplaced(const String& string, char fromChar, char toChar);
/// Create a blob from a string
static ComPtr<ISlangBlob> createStringBlob(const String& string);
};
} // namespace Slang
#endif // SLANG_STRING_UTIL_H
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