58 lines
1.1 KiB
Go
58 lines
1.1 KiB
Go
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package util
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import (
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"strings"
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)
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func CapitalizeFirst(s string) string {
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if len(s) == 0 {
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return s
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}
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return strings.ToUpper(s[:1]) + s[1:]
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}
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// A StringTabulator aligns columns similarly to the tabulator
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// character (but 100% rigorously).
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type StringTabulator [][]string
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func (t *StringTabulator) WriteRow(cols ...string) {
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*t = append(*t, cols)
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}
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func (t *StringTabulator) String() string {
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if t == nil {
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return ""
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}
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// Find which row has the most columns.
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longestRow := 0
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for _, row := range *t {
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if len(row) > longestRow {
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longestRow = len(row)
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}
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}
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// For each column, find the field with the longest string.
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longestField := make([]int, longestRow)
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for _, row := range *t {
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for i, col := range row {
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if len(col) > longestField[i] {
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longestField[i] = len(col)
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}
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}
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}
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// Add each line tabulated.
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var res strings.Builder
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for _, row := range *t {
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for i, col := range row {
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res.WriteString(col)
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res.WriteString(strings.Repeat(" ", longestField[i]-len(col)))
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}
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res.WriteString("\n")
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}
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// Return the result.
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return res.String()
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}
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