ml
43 lines
1.0 KiB
Go
43 lines
1.0 KiB
Go
package text
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import "strings"
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const (
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// textLineLimit is the lowest number found by a cursory search.
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// It appears that various texts have different limits.
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textLineLimit = 79
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)
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// Blocked splits the given input string into a series of lines, usable for blocked serialization.
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// It returns an array of strings that each are below a maximum line length. The list is terminated with
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// one empty line (necessary for compound strings).
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func Blocked(input string) []string {
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var result []string
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textLines := strings.Split(input, "\n")
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resultLine := ""
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addBlock := func() {
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if len(resultLine) > 0 {
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result = append(result, resultLine)
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resultLine = ""
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}
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}
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for textLineIndex, textLine := range textLines {
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words := strings.Split(textLine, " ")
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for wordIndex, word := range words {
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if wordIndex > 0 {
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resultLine += " "
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}
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if (len(resultLine) + len(word)) > textLineLimit {
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addBlock()
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}
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resultLine += word
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}
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if textLineIndex < (len(textLines) - 1) {
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resultLine += "\n"
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}
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}
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addBlock()
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return append(result, "")
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}
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