Method formatLimitLength

pkg/sql/sem/tree/format.go:691–717

formatLimitLength recurses into a node for pretty-printing, but limits the number of characters to be printed.

(n NodeFormatter, maxLength int)

// formatLimitLength recurses into a node for pretty-printing, but limits the
// number of characters to be printed.
func (ctx *FmtCtx) formatLimitLength(n NodeFormatter, maxLength int) {
	temp := NewFmtCtx(ctx.flags)
	temp.formatNodeSummary(n)
	s := temp.CloseAndGetString()
	if len(s) > maxLength {
		truncated := s[:maxLength] + "..."
		// close all open parentheses.
		if strings.Count(truncated, "(") > strings.Count(truncated, ")") {
			remaining := s[maxLength:]
			for i, c := range remaining {
				if c == ')' {
					truncated += ")"
					// add ellipses if there was more text after the parenthesis in
					// the original string.
					if i < len(remaining)-1 && string(remaining[i+1]) != ")" {
						truncated += "..."
					}
					if strings.Count(truncated, "(") <= strings.Count(truncated, ")") {
						break
					}
				}
			}
		}
		s = truncated
	}
	ctx.WriteString(s)
}

// formatSummarySelect pretty-prints a summarized select statement.
// See FmtSummary for supported formats.