Testing Cursor Information Reports

deccir.sh

#!/bin/bash

CSI=$'\e['   # Control Sequence Introducer 
DCS=$'\eP'   # Device Control String
ST=$'\e\\'   # String Terminator
ESC=$'\e'

get_cursor_info() {
  IFS="\e" read -a REPLY -t 1 -s -p ${CSI}'1$w' -r -d '\'
  echo "${REPLY[0]:1:-1}"
}

set_cursor_info() {
  echo -n ${DCS}'1$t'${1}${ST}
}

get_xcpr() {
  IFS="\e" read -a REPLY -t 1 -s -p ${CSI}'?6n' -r -d 'R'
  echo "${REPLY[0]:3}"
}

get_sgr() {
  IFS="\e" read -a REPLY -t 1 -s -p ${DCS}'$qm'${ST} -r -d '\'
  echo "${REPLY[0]:5:-2}"
}

get_decsca() {
  IFS="\e" read -a REPLY -t 1 -s -p ${DCS}'$q"q'${ST} -r -d '\'
  echo "${REPLY[0]:5:-3}"
}

get_decom() {
  IFS="\e" read -a REPLY -t 1 -s -p ${CSI}'?6$p' -r -d 'y'
  echo "${REPLY[0]:2:-1}"
}

reset_state() {
  echo -n ${CSI}'!p'         # Soft reset
  echo -n ${CSI}'H'          # Home cursor
  echo -n ${CSI}' P'         # Page 1
  echo -n ${CSI}'?7h'        # Auto wrap
  echo -n ${DCS}'0!u%5'${ST} # UPSS
  echo -n ${CSI}'r'          # No margins
}


# Start with default values
reset_state
initial=$(get_cursor_info)

# Cursor position
echo -n ${CSI}'3;4H'
cursor=$(get_cursor_info)

# Page number
echo -n ${CSI}'2 P'
page=$(get_cursor_info)

# Bold
echo -n ${CSI}'1m'
bold=$(get_cursor_info)

# Underline
echo -n ${CSI}'4m'
underline=$(get_cursor_info)

# Blinking
echo -n ${CSI}'5m'
blinking=$(get_cursor_info)

# Negative
echo -n ${CSI}'7m'
negative=$(get_cursor_info)

# Invisible
echo -n ${CSI}'8m'
invisible=$(get_cursor_info)

# ANSI colors
echo -n ${CSI}'33;44m'
colors=$(get_cursor_info)

# Selective erase
echo -n ${CSI}'1"q'
decsca=$(get_cursor_info)

# Origin mode
echo -n ${CSI}'?6h' # Set mode
echo -n ${CSI}'10;20r' # Set margins
echo -n ${CSI}'5;6H' # Set cursor
decom=$(get_cursor_info)

# Single shift 2
echo -n ${ESC}'N'
ss2=$(get_cursor_info)

# Single shift 3
echo -n ${ESC}'O'
ss3=$(get_cursor_info)

# Pending wrap
echo -n ${CSI}'1;9999H*'
wrap=$(get_cursor_info)

# Invoke G1 into GL (LS1)
echo -en '\x0E'
gl=$(get_cursor_info)

# Invoke G3 into GR (LS3R)
echo -n ${ESC}'|'
gr=$(get_cursor_info)

# G0 as Supplemental (%5)
echo -n ${ESC}'(%5'
g0_94=$(get_cursor_info)

# G1 as UPSS (<)
echo -n ${ESC}')<'
g1_94=$(get_cursor_info)

# G2 as DEC Graphics (0)
echo -n ${ESC}'*0'
g2_94=$(get_cursor_info)

# G3 as DEC Graphics (0)
echo -n ${ESC}'+0'
g3_94=$(get_cursor_info)

# G1 as Latin-1 (A)
echo -n ${ESC}'-A'
g1_96=$(get_cursor_info)

# G2 as Latin-1 (A)
echo -n ${ESC}'.A'
g2_96=$(get_cursor_info)

# G3 as Latin-1 (A)
echo -n ${ESC}'/A'
g3_96=$(get_cursor_info)

reset_state

# Cursor position
set_cursor_info '3;4;1;@;@;@;0;2;@;BBBB'
cursor_set=$(get_xcpr)

# Page number
set_cursor_info '1;1;2;@;@;@;0;2;@;BBBB'
page_set=$(get_xcpr)

# Bold
set_cursor_info '1;1;1;A;@;@;0;2;@;BBBB'
bold_set=$(get_sgr)

# Underline
set_cursor_info '1;1;1;B;@;@;0;2;@;BBBB'
underline_set=$(get_sgr)

# Blinking
set_cursor_info '1;1;1;D;@;@;0;2;@;BBBB'
blinking_set=$(get_sgr)

# Negative
set_cursor_info '1;1;1;H;@;@;0;2;@;BBBB'
negative_set=$(get_sgr)

# Invisible
set_cursor_info '1;1;1;P;@;@;0;2;@;BBBB'
invisible_set=$(get_sgr)

# Selective erase
set_cursor_info '1;1;1;@;A;@;0;2;@;BBBB'
decsca_set=$(get_decsca)

# Origin mode
echo -n ${CSI}'10;20r' # Set margins
set_cursor_info '5;6;1;@;@;A;0;2;@;BBBB'
decom_set="$(get_decom) $(get_xcpr)"
echo -n ${CSI}'?6l' # Disable DECOM
echo -n ${CSI}'r' # Clear margins

# Pending wrap
set_cursor_info '1;80;1;@;@;H;0;2;@;BBBB'
echo -n '*'
pending_set=$(get_xcpr)


reset_state
echo -n ${CSI}'J'

COL65=$'\r'${CSI}'64C'

echo "Initial state:       ${initial}"
echo "Cursor position:     ${cursor}"     ${COL65}"${cursor_set}"
echo "Page number:         ${page}"       ${COL65}"${page_set}"
echo "Bold rendition:      ${bold}"       ${COL65}"${bold_set}"
echo "Underline rendition: ${underline}"  ${COL65}"${underline_set}"
echo "Blinking rendition:  ${blinking}"   ${COL65}"${blinking_set}"
echo "Negative rendition:  ${negative}"   ${COL65}"${negative_set}"
echo "Invisible rendition: ${invisible}"  ${COL65}"${invisible_set}"
echo "Color rendition:     ${colors}"
echo "Selective erase:     ${decsca}"     ${COL65}"${decsca_set}"
echo "Origin mode:         ${decom}"      ${COL65}"${decom_set}"
echo "Pending SS2:         ${ss2}"
echo "Pending SS3:         ${ss3}"
echo "Pending wrap:        ${wrap}"       ${COL65}"${pending_set}"
echo "GL mapped to G1:     ${gl}"
echo "GR mapped to G3:     ${gr}"
echo "G0 as Supplemental:  ${g0_94}"
echo "G1 as UPSS:          ${g1_94}"
echo "G2 as DEC Graphics:  ${g2_94}"
echo "G3 as DEC Graphics:  ${g3_94}"
echo "G1 as Latin-1:       ${g1_96}"
echo "G2 as Latin-1:       ${g2_96}"
echo "G3 as Latin-1:       ${g3_96}"


# Single shift 2
echo -n ${ESC}'*0'  # Make sure G2 is 0
set_cursor_info '12;65;1;@;@;B;0;2;@;BB0B'
echo -n 'aa'
echo -n ${CSI}'!p'  # Soft reset

# Single shift 3
echo -n ${ESC}'+0'  # Make sure G3 is 0
set_cursor_info '13;65;1;@;@;D;0;2;@;BBB0'
echo -n 'aa'
echo -n ${CSI}'!p'  # Soft reset

# Invoke G1 into GL
echo -n ${ESC}')>'  # Make sure G1 is >
set_cursor_info '15;65;1;@;@;@;1;2;@;B>BB'
echo -n 'abcde'
echo -n ${CSI}'!p'  # Soft reset

# Invoke G3 into GR
echo -n ${ESC}'%@'  # Make sure ISO2022 coding is enabled on modern terminals
echo -n ${ESC}'+>'  # Make sure G3 is >
set_cursor_info '16;65;1;@;@;@;0;3;@;BBB>'
echo -n $'\xE1\xE2\xE3\xE4\xE5'
echo -n ${CSI}'!p'  # Soft reset

# G0 as Supplemental (%5)
echo -en '\x0F'     # Make sure G0 is in GL
set_cursor_info '17;65;1;@;@;@;0;2;@;%5BBB'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# G1 as UPSS (<)
echo -en '\x0E'    # Make sure G1 is in GL
set_cursor_info '18;65;1;@;@;@;1;2;@;B<BB'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# G2 as DEC Graphics (0)
echo -n ${ESC}'n'   # Make sure G2 is in GL
set_cursor_info '19;65;1;@;@;@;2;2;@;BB0B'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# G3 as DEC Graphics (0)
echo -n ${ESC}'o'   # Make sure G3 is in GL
set_cursor_info '20;65;1;@;@;@;3;2;@;BBB0'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# G1 as Latin-1 (A)
echo -en '\x0E'     # Make sure G1 is in GL
set_cursor_info '21;65;1;@;@;@;1;2;B;BABB'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# G2 as Latin-1 (A)
echo -n ${ESC}'n'   # Make sure G2 is in GL
set_cursor_info '22;65;1;@;@;@;2;2;D;BBAB'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# G3 as Latin-1 (A)
echo -n ${ESC}'o'   # Make sure G3 is in GL
set_cursor_info '23;65;1;@;@;@;3;2;H;BBBA'
echo -n 'abcd^'
echo -n ${CSI}'!p'  # Soft reset

# Restore position
echo -n ${CSI}'24H'