mirror of
https://github.com/johnkerl/miller.git
synced 2026-07-17 16:38:54 +00:00
d56eafff97
Replaces 100+ if/else-if chains on a single variable with tagged switch statements across 72 files. The bulk are transformer option-parsing loops (switch on opt string), plus a handful of value-dispatch sites in mlrval, dsl/cst, repl, lib, auxents, and bifs. One case (surv.go) required a labeled break to preserve the loop-exit behavior of the original else branch. Fixes staticcheck QF1003 findings. Co-authored-by: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
69 lines
1.3 KiB
Go
69 lines
1.3 KiB
Go
package lib
|
|
|
|
import (
|
|
"bytes"
|
|
)
|
|
|
|
// * https://en.wikipedia.org/wiki/Tab-separated_values
|
|
// * https://www.iana.org/assignments/media-types/text/tab-separated-values
|
|
// \n for newline,
|
|
// \r for carriage return,
|
|
// \t for tab,
|
|
// \\ for backslash.
|
|
|
|
// TSVDecodeField is for the TSV record-reader.
|
|
func TSVDecodeField(input string) string {
|
|
var buffer bytes.Buffer
|
|
n := len(input)
|
|
for i := 0; i < n; /* increment in loop */ {
|
|
c := input[i]
|
|
if c == '\\' && i < n-1 {
|
|
d := input[i+1]
|
|
switch d {
|
|
case '\\':
|
|
buffer.WriteByte('\\')
|
|
i += 2
|
|
case 'n':
|
|
buffer.WriteByte('\n')
|
|
i += 2
|
|
case 'r':
|
|
buffer.WriteByte('\r')
|
|
i += 2
|
|
case 't':
|
|
buffer.WriteByte('\t')
|
|
i += 2
|
|
default:
|
|
buffer.WriteByte(c)
|
|
i++
|
|
}
|
|
} else {
|
|
buffer.WriteByte(c)
|
|
i++
|
|
}
|
|
}
|
|
return buffer.String()
|
|
}
|
|
|
|
// TSVEncodeField is for the TSV record-writer.
|
|
func TSVEncodeField(input string) string {
|
|
var buffer bytes.Buffer
|
|
for _, r := range input {
|
|
switch r {
|
|
case '\\':
|
|
buffer.WriteByte('\\')
|
|
buffer.WriteByte('\\')
|
|
case '\n':
|
|
buffer.WriteByte('\\')
|
|
buffer.WriteByte('n')
|
|
case '\r':
|
|
buffer.WriteByte('\\')
|
|
buffer.WriteByte('r')
|
|
case '\t':
|
|
buffer.WriteByte('\\')
|
|
buffer.WriteByte('t')
|
|
default:
|
|
buffer.WriteRune(r)
|
|
}
|
|
}
|
|
return buffer.String()
|
|
}
|