ObjFW  Diff

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

#include <sys/types.h>

#import "OFString.h"
#import "OFSystemInfo.h"

#define MAX_SUBFORMAT_LEN 64

#ifndef HAVE_ASPRINTF
/*
 * (v)asprintf might be declared, but HAVE_ASPRINTF not defined because
 * configure determined it is broken. In this case, we must make sure there is

		LENGTH_MODIFIER_L,
		LENGTH_MODIFIER_LL,
		LENGTH_MODIFIER_J,
		LENGTH_MODIFIER_Z,
		LENGTH_MODIFIER_T,
		LENGTH_MODIFIER_CAPITAL_L
	} lengthModifier;
	bool useLocale;
};

#ifndef HAVE_ASPRINTF
static int
vasprintf(char **string, const char *format, va_list arguments)
{
	int length;

	case ' ':
	case '#':
	case '0':
		if (!appendSubformat(ctx, ctx->format + ctx->i, 1))
			return false;

		break;
	case ',':
		/* ObjFW extension: Use decimal point from locale */
		ctx->useLocale = true;
		break;
	default:
		ctx->state = STATE_FORMAT_FIELD_WIDTH;
		ctx->i--;

		break;
	}

		case LENGTH_MODIFIER_CAPITAL_L:
			tmpLen = asprintf(&tmp, ctx->subformat,
			    va_arg(ctx->arguments, long double));
			break;
		default:
			return false;
		}

		/*
		 * Ugly hack to undo locale, as there is nothing such as
		 * asprintf_l in POSIX.
		 */
		if (!ctx->useLocale) {
			void *pool = objc_autoreleasePoolPush();
			char *tmp2;

			@try {
				OFMutableString *tmpStr = [OFMutableString
				    stringWithUTF8String: tmp
						  length: tmpLen];
				OFString *decimalPoint =
				    [OFSystemInfo decimalPoint];
				[tmpStr replaceOccurrencesOfString: decimalPoint
							withString: @"."];
				if ([tmpStr UTF8StringLength] > INT_MAX)
					return false;
				tmpLen = (int)[tmpStr UTF8StringLength];
				tmp2 = malloc(tmpLen);
				memcpy(tmp2, [tmpStr UTF8String], tmpLen);
			} @finally {
				free(tmp);
				objc_autoreleasePoolPop(pool);
			}

			tmp = tmp2;
		}

		break;
	case 'c':
		switch (ctx->lengthModifier) {
		case LENGTH_MODIFIER_NONE:
			tmpLen = asprintf(&tmp, ctx->subformat,
			    va_arg(ctx->arguments, int));

		free(tmp);
	}

	memset(ctx->subformat, 0, MAX_SUBFORMAT_LEN);
	ctx->subformatLen = 0;
	ctx->lengthModifier = LENGTH_MODIFIER_NONE;
	ctx->useLocale = false;

	ctx->last = ctx->i + 1;
	ctx->state = STATE_STRING;

	return true;
}

	memset(ctx.subformat, 0, MAX_SUBFORMAT_LEN + 1);
	ctx.subformatLen = 0;
	va_copy(ctx.arguments, arguments);
	ctx.bufferLen = 0;
	ctx.last = 0;
	ctx.state = STATE_STRING;
	ctx.lengthModifier = LENGTH_MODIFIER_NONE;
	ctx.useLocale = false;

	if ((ctx.buffer = malloc(1)) == NULL)
		return -1;

	for (ctx.i = 0; ctx.i < ctx.formatLen; ctx.i++) {
		if (!states[ctx.state](&ctx)) {
			free(ctx.buffer);