99 lines
1.8 KiB
Go
99 lines
1.8 KiB
Go
package ansiterm
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import (
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"strconv"
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)
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func parseParams(bytes []byte) ([]string, error) {
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paramBuff := make([]byte, 0, 0)
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params := []string{}
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for _, v := range bytes {
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if v == ';' {
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if len(paramBuff) > 0 {
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// Completed parameter, append it to the list
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s := string(paramBuff)
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params = append(params, s)
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paramBuff = make([]byte, 0, 0)
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}
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} else {
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paramBuff = append(paramBuff, v)
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}
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}
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// Last parameter may not be terminated with ';'
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if len(paramBuff) > 0 {
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s := string(paramBuff)
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params = append(params, s)
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}
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return params, nil
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}
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func parseCmd(context ansiContext) (string, error) {
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return string(context.currentChar), nil
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}
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func getInt(params []string, dflt int) int {
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i := getInts(params, 1, dflt)[0]
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return i
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}
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func getInts(params []string, minCount int, dflt int) []int {
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ints := []int{}
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for _, v := range params {
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i, _ := strconv.Atoi(v)
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// Zero is mapped to the default value in VT100.
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if i == 0 {
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i = dflt
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}
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ints = append(ints, i)
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}
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if len(ints) < minCount {
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remaining := minCount - len(ints)
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for i := 0; i < remaining; i++ {
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ints = append(ints, dflt)
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}
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}
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return ints
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}
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func (ap *AnsiParser) modeDispatch(param string, set bool) error {
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switch param {
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case "?3":
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return ap.eventHandler.DECCOLM(set)
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case "?6":
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return ap.eventHandler.DECOM(set)
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case "?25":
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return ap.eventHandler.DECTCEM(set)
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}
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return nil
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}
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func (ap *AnsiParser) hDispatch(params []string) error {
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if len(params) == 1 {
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return ap.modeDispatch(params[0], true)
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}
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return nil
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}
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func (ap *AnsiParser) lDispatch(params []string) error {
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if len(params) == 1 {
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return ap.modeDispatch(params[0], false)
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}
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return nil
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}
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func getEraseParam(params []string) int {
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param := getInt(params, 0)
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if param < 0 || 3 < param {
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param = 0
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}
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return param
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}
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