mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2025-11-02 16:52:25 -06:00
72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
|
package split
|
||
|
|
|
||
|
|
import (
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// singleTermLine: beyond a certain length of string, all of the
|
||
|
|
// extra checks to handle quoting/not-quoting add a significant
|
||
|
|
// amount of extra processing time. Quoting in this manner only really
|
||
|
|
// effects readability on a single line, so a max string length that
|
||
|
|
// encompasses the maximum number of columns on *most* terminals was
|
||
|
|
// selected. This was chosen using the metric that 1080p is one of the
|
||
|
|
// most common display resolutions, and that a relatively small font size
|
||
|
|
// of 7 requires ~ 223 columns. So 256 should be >= $COLUMNS (fullscreen)
|
||
|
|
// in 99% of usecases (these figures all pulled out of my ass).
|
||
|
|
const singleTermLine = 256
|
||
|
|
|
||
|
|
// appendQuote will append 'str' to 'buf', double quoting and escaping if needed.
|
||
|
|
func appendQuote(buf []byte, str string) []byte {
|
||
|
|
switch {
|
||
|
|
case len(str) > singleTermLine || !strconv.CanBackquote(str):
|
||
|
|
// Append quoted and escaped string
|
||
|
|
return strconv.AppendQuote(buf, str)
|
||
|
|
|
||
|
|
case (strings.IndexByte(str, '"') != -1):
|
||
|
|
// Double quote and escape string
|
||
|
|
buf = append(buf, '"')
|
||
|
|
buf = appendEscape(buf, str)
|
||
|
|
buf = append(buf, '"')
|
||
|
|
return buf
|
||
|
|
|
||
|
|
case (strings.IndexByte(str, ',') != -1):
|
||
|
|
// Double quote this string as-is
|
||
|
|
buf = append(buf, '"')
|
||
|
|
buf = append(buf, str...)
|
||
|
|
buf = append(buf, '"')
|
||
|
|
return buf
|
||
|
|
|
||
|
|
default:
|
||
|
|
// Append string as-is
|
||
|
|
return append(buf, str...)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// appendEscape will append 'str' to 'buf' and escape any double quotes.
|
||
|
|
func appendEscape(buf []byte, str string) []byte {
|
||
|
|
var delim bool
|
||
|
|
for i := range str {
|
||
|
|
switch {
|
||
|
|
case str[i] == '\\' && !delim:
|
||
|
|
// Set delim flag
|
||
|
|
delim = true
|
||
|
|
|
||
|
|
case str[i] == '"' && !delim:
|
||
|
|
// Append escaped double quote
|
||
|
|
buf = append(buf, `\"`...)
|
||
|
|
|
||
|
|
case delim:
|
||
|
|
// Append skipped slash
|
||
|
|
buf = append(buf, `\`...)
|
||
|
|
delim = false
|
||
|
|
fallthrough
|
||
|
|
|
||
|
|
default:
|
||
|
|
// Append char as-is
|
||
|
|
buf = append(buf, str[i])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return buf
|
||
|
|
}
|