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/*********************************************************/
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/* ptycon: a pty-console bridge */
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/* Copyright (C) 2016--2017 Z. Gilboa */
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/* Released under GPLv2 and GPLv3; see COPYING.PTYCON. */
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/*********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ptycon/ptycon.h>
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#include "ptycon_bridge_impl.h"
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/* forward declarations: csi sequence parameters */
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static ptyc_term_handler csi_illegal_code;
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static ptyc_term_handler csi_param_decimal_digit;
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static ptyc_term_handler csi_param_semicolon;
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/* forward declarations: csi sequence commands */
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static ptyc_term_handler csi_action_select_sgr;
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static ptyc_term_handler csi_action_process_params;
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ptyc_term_handler * const ptyc_csi_handlers[PTYC_CSI_ARRAY_SIZE] = {
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csi_illegal_code, /* 0x00 */
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csi_illegal_code, /* 0x01 */
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csi_illegal_code, /* 0x02 */
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csi_illegal_code, /* 0x03 */
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csi_illegal_code, /* 0x04 */
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csi_illegal_code, /* 0x05 */
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csi_illegal_code, /* 0x06 */
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csi_illegal_code, /* 0x07 */
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csi_illegal_code, /* 0x08 */
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csi_illegal_code, /* 0x09 */
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csi_illegal_code, /* 0x0a */
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csi_illegal_code, /* 0x0b */
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csi_illegal_code, /* 0x0c */
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csi_illegal_code, /* 0x0d */
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csi_illegal_code, /* 0x0e */
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csi_illegal_code, /* 0x0f */
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csi_illegal_code, /* 0x10 */
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csi_illegal_code, /* 0x11 */
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csi_illegal_code, /* 0x12 */
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csi_illegal_code, /* 0x13 */
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csi_illegal_code, /* 0x14 */
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csi_illegal_code, /* 0x15 */
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csi_illegal_code, /* 0x16 */
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csi_illegal_code, /* 0x17 */
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csi_illegal_code, /* 0x18 */
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csi_illegal_code, /* 0x19 */
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csi_illegal_code, /* 0x1a */
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csi_illegal_code, /* 0x1b */
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csi_illegal_code, /* 0x1c */
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csi_illegal_code, /* 0x1d */
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csi_illegal_code, /* 0x1e */
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csi_illegal_code, /* 0x1f */
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csi_illegal_code, /* 0x20 */
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csi_illegal_code, /* 0x21 */
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csi_illegal_code, /* 0x22 */
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csi_illegal_code, /* 0x23 */
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csi_illegal_code, /* 0x24 */
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csi_illegal_code, /* 0x25 */
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csi_illegal_code, /* 0x26 */
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csi_illegal_code, /* 0x27 */
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csi_illegal_code, /* 0x28 */
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csi_illegal_code, /* 0x29 */
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csi_illegal_code, /* 0x2a */
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csi_illegal_code, /* 0x2b */
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csi_illegal_code, /* 0x2c */
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csi_illegal_code, /* 0x2d */
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csi_illegal_code, /* 0x2e */
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csi_illegal_code, /* 0x2f */
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csi_param_decimal_digit, /* 0x30 */ /* null */
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csi_param_decimal_digit, /* 0x31 */ /* eins */
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csi_param_decimal_digit, /* 0x32 */ /* zwei */
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csi_param_decimal_digit, /* 0x33 */ /* drei */
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csi_param_decimal_digit, /* 0x34 */ /* vier */
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csi_param_decimal_digit, /* 0x35 */ /* fünf */
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csi_param_decimal_digit, /* 0x36 */ /* sechs */
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csi_param_decimal_digit, /* 0x37 */ /* sieben */
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csi_param_decimal_digit, /* 0x38 */ /* acht */
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csi_param_decimal_digit, /* 0x39 */ /* neun */
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csi_illegal_code, /* 0x3a */
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csi_param_semicolon, /* 0x3b */ /* semicolon */
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csi_illegal_code, /* 0x3c */
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csi_illegal_code, /* 0x3d */
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csi_illegal_code, /* 0x3e */
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csi_illegal_code, /* 0x3f */
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csi_illegal_code, /* 0x40 */
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csi_illegal_code, /* 0x41 */
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csi_illegal_code, /* 0x42 */
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csi_illegal_code, /* 0x43 */
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csi_illegal_code, /* 0x44 */
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csi_illegal_code, /* 0x45 */
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csi_illegal_code, /* 0x46 */
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csi_illegal_code, /* 0x47 */
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csi_illegal_code, /* 0x48 */
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csi_illegal_code, /* 0x49 */
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csi_illegal_code, /* 0x4a */
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csi_illegal_code, /* 0x4b */
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csi_illegal_code, /* 0x4c */
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csi_illegal_code, /* 0x4d */
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csi_illegal_code, /* 0x4e */
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csi_illegal_code, /* 0x4f */
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csi_illegal_code, /* 0x50 */
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csi_illegal_code, /* 0x51 */
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csi_illegal_code, /* 0x52 */
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csi_illegal_code, /* 0x53 */
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csi_illegal_code, /* 0x54 */
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csi_illegal_code, /* 0x55 */
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csi_illegal_code, /* 0x56 */
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csi_illegal_code, /* 0x57 */
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csi_illegal_code, /* 0x58 */
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csi_illegal_code, /* 0x59 */
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csi_illegal_code, /* 0x5a */
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csi_illegal_code, /* 0x5b */
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csi_illegal_code, /* 0x5c */
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csi_illegal_code, /* 0x5d */
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csi_illegal_code, /* 0x5e */
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csi_illegal_code, /* 0x5f */
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csi_illegal_code, /* 0x60 */
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csi_illegal_code, /* 0x61 */
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csi_illegal_code, /* 0x62 */
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csi_illegal_code, /* 0x63 */
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csi_illegal_code, /* 0x64 */
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csi_illegal_code, /* 0x65 */
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csi_illegal_code, /* 0x66 */
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csi_illegal_code, /* 0x67 */
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csi_illegal_code, /* 0x68 */
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csi_illegal_code, /* 0x69 */
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csi_illegal_code, /* 0x6a */
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csi_illegal_code, /* 0x6b */
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csi_illegal_code, /* 0x6c */
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csi_action_select_sgr, /* 0x6d */ /* lowercase m: sgr */
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csi_illegal_code
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};
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static void * __fastcall csi_illegal_code(struct ptyc_term_ctx * tctx)
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{
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/* defer to the screen handler routine */
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return tctx->char_handler;
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}
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static void * __fastcall csi_param_decimal_digit(struct ptyc_term_ctx * tctx)
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{
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/* add digit to current control parameter */
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*tctx->ctrl_param *= 10;
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*tctx->ctrl_param += *tctx->wch_pty - '0';
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/* advance the stream pointer */
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tctx->wch_pty++;
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/* retain mode */
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return tctx->ctrl_handler;
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}
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static void * __fastcall csi_param_semicolon(struct ptyc_term_ctx * tctx)
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{
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/* boundary check */
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if (tctx->ctrl_param == &tctx->ctrl_params[PTYC_CTRL_PARAMS-1])
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return csi_illegal_code(tctx);
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/* prepare to read the next ctrl param */
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tctx->ctrl_param++;
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*tctx->ctrl_param = 0;
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/* advance the stream pointer */
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tctx->wch_pty++;
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/* retain mode */
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return tctx->ctrl_handler;
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}
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static void * __fastcall csi_action_invoke(
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struct ptyc_term_ctx * tctx,
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ptyc_term_handler * const * handlers,
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unsigned int ctrl_cap)
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{
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/* ctrl_actions */
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tctx->ctrl_state = PTYC_CTRL_STATE_COMMAND_HANDLERS;
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tctx->ctrl_handlers[tctx->ctrl_state] = handlers;
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/* ctrl_cap */
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tctx->ctrl_cap = ctrl_cap;
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/* ctrl_command */
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tctx->ctrl_command = csi_action_process_params;
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/* execute */
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tctx->ctrl_command(tctx);
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/* advance the stream pointer */
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tctx->wch_pty++;
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/* switch mode */
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return tctx->char_handler;
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}
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static void * __fastcall csi_action_select_sgr(struct ptyc_term_ctx * tctx)
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{
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return csi_action_invoke(tctx,ptyc_sgr_handlers,PTYC_SGR_ARRAY_SIZE);
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}
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static void * __fastcall csi_action_process_params(struct ptyc_term_ctx * tctx)
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{
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ptyc_term_handler * pfn_action;
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unsigned int action_idx;
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tctx->ctrl_mark = tctx->ctrl_params;
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while (tctx->ctrl_mark <= tctx->ctrl_param) {
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action_idx = (*tctx->ctrl_mark < tctx->ctrl_cap)
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? *tctx->ctrl_mark
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: tctx->ctrl_cap - 1;
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pfn_action = tctx->ctrl_handlers[tctx->ctrl_state][action_idx];
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pfn_action(tctx);
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tctx->ctrl_mark++;
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}
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/* return value not used */
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return tctx->ctrl_mark;
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}
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