init claude-code

2026-04-01 17:32:37 +02:00
commit 73b208c009
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+/**
+ * ANSI Control Characters and Escape Sequence Introducers
+ *
+ * Based on ECMA-48 / ANSI X3.64 standards.
+ */
+
+/**
+ * C0 (7-bit) control characters
+ */
+export const C0 = {
+  NUL: 0x00,
+  SOH: 0x01,
+  STX: 0x02,
+  ETX: 0x03,
+  EOT: 0x04,
+  ENQ: 0x05,
+  ACK: 0x06,
+  BEL: 0x07,
+  BS: 0x08,
+  HT: 0x09,
+  LF: 0x0a,
+  VT: 0x0b,
+  FF: 0x0c,
+  CR: 0x0d,
+  SO: 0x0e,
+  SI: 0x0f,
+  DLE: 0x10,
+  DC1: 0x11,
+  DC2: 0x12,
+  DC3: 0x13,
+  DC4: 0x14,
+  NAK: 0x15,
+  SYN: 0x16,
+  ETB: 0x17,
+  CAN: 0x18,
+  EM: 0x19,
+  SUB: 0x1a,
+  ESC: 0x1b,
+  FS: 0x1c,
+  GS: 0x1d,
+  RS: 0x1e,
+  US: 0x1f,
+  DEL: 0x7f,
+} as const
+
+// String constants for output generation
+export const ESC = '\x1b'
+export const BEL = '\x07'
+export const SEP = ';'
+
+/**
+ * Escape sequence type introducers (byte after ESC)
+ */
+export const ESC_TYPE = {
+  CSI: 0x5b, // [ - Control Sequence Introducer
+  OSC: 0x5d, // ] - Operating System Command
+  DCS: 0x50, // P - Device Control String
+  APC: 0x5f, // _ - Application Program Command
+  PM: 0x5e, // ^ - Privacy Message
+  SOS: 0x58, // X - Start of String
+  ST: 0x5c, // \ - String Terminator
+} as const
+
+/** Check if a byte is a C0 control character */
+export function isC0(byte: number): boolean {
+  return byte < 0x20 || byte === 0x7f
+}
+
+/**
+ * Check if a byte is an ESC sequence final byte (0-9, :, ;, <, =, >, ?, @ through ~)
+ * ESC sequences have a wider final byte range than CSI
+ */
+export function isEscFinal(byte: number): boolean {
+  return byte >= 0x30 && byte <= 0x7e
+}