ObjFW  Check-in [945ff1043d]

	     encoding: (of_string_encoding_t)encoding
	       length: (size_t)cStringLength;

/*!
 * @brief Appends a formatted string to the OFMutableString.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A format string which generates the string to append
 */
- (void)appendFormat: (OFConstantString*)format, ...;

/*!
 * @brief Appends a formatted string to the OFMutableString.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A format string which generates the string to append
 * @param arguments The arguments used in the format string
 */
- (void)appendFormat: (OFConstantString*)format
	   arguments: (va_list)arguments;

- (size_t)writeLine: (OFString*)string
	   encoding: (of_string_encoding_t)encoding;

/*!
 * @brief Writes a formatted string into the stream.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A string used as format
 * @return The number of bytes written
 */
- (size_t)writeFormat: (OFConstantString*)format, ...;

/*!
 * @brief Writes a formatted string into the stream.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A string used as format
 * @param arguments The arguments used in the format string
 * @return The number of bytes written
 */
- (size_t)writeFormat: (OFConstantString*)format
	    arguments: (va_list)arguments;

			       length: (size_t)length
			    byteOrder: (of_byte_order_t)byteOrder;

/*!
 * @brief Creates a new OFString from a format string.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A string used as format to initialize the OFString
 * @return A new autoreleased OFString
 */
+ (instancetype)stringWithFormat: (OFConstantString*)format, ...;

/*!

	       length: (size_t)length
	    byteOrder: (of_byte_order_t)byteOrder;

/*!
 * @brief Initializes an already allocated OFString with a format string.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A string used as format to initialize the OFString
 * @return An initialized OFString
 */
- initWithFormat: (OFConstantString*)format, ... OF_FORMAT_FUNCTION(1, 2);

/*!
 * @brief Initializes an already allocated OFString with a format string.
 *
 * See printf for the format syntax. As an addition, %@ is available as format
 * specifier for objects, %k for of_unichar_t and %K for const of_unichar_t*.
 *
 * @param format A string used as format to initialize the OFString
 * @param arguments The arguments used in the format string
 * @return An initialized OFString
 */
- initWithFormat: (OFConstantString*)format
       arguments: (va_list)arguments;

#include <stdbool.h>
#include <wchar.h>

#include <sys/types.h>

#import "OFString.h"



#import "asprintf.h"
#import "autorelease.h"
#import "macros.h"

#define MAX_SUBFORMAT_LEN 64

struct context {

		{
			char buffer[5];
			size_t len = of_string_utf8_encode(
			    va_arg(ctx->arguments, of_unichar_t), buffer);

			if (len == 0)
				return false;

			buffer[len] = 0;
			tmpLen = asprintf(&tmp, ctx->subformat, buffer);
		}

		break;
	case 'K':
		if (ctx->lengthModifier != LENGTH_MODIFIER_NONE)
			return false;

		ctx->subformat[ctx->subformatLen - 1] = 's';

		{
			const of_unichar_t *arg =
			    va_arg(ctx->arguments, const of_unichar_t*);
			size_t i, j, len = of_string_utf32_length(arg);
			char *buffer;

			if (SIZE_MAX / 4 < len || (SIZE_MAX / 4) - len < 1)
				return false;

			if ((buffer = malloc((len * 4) + 1)) == NULL)
				return false;

			for (i = j = 0; i < len; i++) {
				size_t clen = of_string_utf8_encode(arg[i],
				    buffer + j);

				if (clen == 0) {
					free(buffer);
					return false;
				}

				j += clen;
			}
			buffer[j] = 0;

			tmpLen = asprintf(&tmp, ctx->subformat, buffer);

			free(buffer);
		}

		break;
	case 'd':
	case 'i':
		switch (ctx->lengthModifier) {
		case LENGTH_MODIFIER_NONE:
		case LENGTH_MODIFIER_HH: