Carlos Florêncio
31 lines
938 B
Go
31 lines
938 B
Go
package process
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import "bytes"
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// containsDSRQuery checks if data contains a Device Status Report (cursor position) query.
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// DSR query is: ESC [ 6 n or ESC [ ? 6 n
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func containsDSRQuery(data []byte) bool {
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return bytes.Contains(data, []byte("\x1b[6n")) || bytes.Contains(data, []byte("\x1b[?6n"))
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}
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// containsDA1Query checks if data contains a Primary Device Attributes query.
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// DA1 query is: ESC [ c or ESC [ 0 c (but NOT ESC [ <digit> c where digit is 1-9,
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// since those are cursor forward sequences).
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func containsDA1Query(data []byte) bool {
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for i := 0; i+2 < len(data); i++ {
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if data[i] != '\x1b' || data[i+1] != '[' {
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continue
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}
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// ESC [ c — DA1 with no parameter
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if data[i+2] == 'c' {
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return true
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}
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// ESC [ 0 c — DA1 with explicit 0 parameter
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if data[i+2] == '0' && i+3 < len(data) && data[i+3] == 'c' {
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return true
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}
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// ESC [ <1-9> c would be cursor forward — skip it
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}
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return false
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}
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