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概要 †

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実装 †

#define EVALUATE_MESSAGE(targetfield, appendval)  \
	{ \
		char		   *fmtbuf; \
		StringInfoData	buf; \
		/* Internationalize the error format string */ \
		fmt = _(fmt); \
		/* Expand %m in format string */ \
		fmtbuf = expand_fmt_string(fmt, edata); \
		initStringInfo(&buf); \
		if ((appendval) && edata->targetfield) \
			appendStringInfo(&buf, "%s\n", edata->targetfield); \
		/* Generate actual output --- have to use appendStringInfoVA */ \
		for (;;) \
		{ \
			va_list		args; \
			bool		success; \
			va_start(args, fmt); \
			success = appendStringInfoVA(&buf, fmtbuf, args); \
			va_end(args); \
			if (success) \
				break; \
			enlargeStringInfo(&buf, buf.maxlen); \
		} \
		/* Done with expanded fmt */ \
		pfree(fmtbuf); \
		/* Save the completed message into the stack item */ \
		if (edata->targetfield) \
			pfree(edata->targetfield); \
		edata->targetfield = pstrdup(buf.data); \
		pfree(buf.data); \
	}
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呼出元 †

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備考 †

/*
* This macro handles expansion of a format string and associated parameters;
* it's common code for errmsg(), errdetail(), etc.  Must be called inside
* a routine that is declared like "const char *fmt, ..." and has an edata
* pointer set up.	The message is assigned to edata->targetfield, or
* appended to it if appendval is true.
*
* Note: we pstrdup the buffer rather than just transferring its storage
* to the edata field because the buffer might be considerably larger than
* really necessary.
*/
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履歴 †

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コメント †


*1 99333685+99333685
*2 99333685+99333685
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