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# Copyright 2023 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Test prompt edit wrapping in CLI.
# We set TERM on build, but we need to set it on host. That only works if
# build == host.
require {!is_remote host}
# Test both ansi (no auto-wrap) and xterm (auto-wrap).
set terms {ansi xterm}
# Fill line, assuming we start after the gdb prompt.
proc fill_line { width } {
set res ""
# Take into account that the prompt also takes space.
set prefix [string length "(gdb) "]
set start [expr $prefix + 1]
# Print chars.
for { set i $start } { $i <= $width } { incr i } {
set c [expr $i % 10]
send_gdb $c
append res $c
}
return $res
}
proc get_screen_width { } {
upvar gdb_width gdb_width
upvar readline_width readline_width
upvar env_width env_width
set gdb_width 0
set readline_width 0
set env_width 0
set re1 "Number of characters gdb thinks are in a line is ($::decimal)\[^\r\n\]*\\."
set re2 \
"Number of characters readline reports are in a line is ($::decimal)\[^\r\n\]*\\."
set re3 \
"Number of characters curses thinks are in a line is $::decimal\\."
set re4 \
"Number of characters environment thinks are in a line is ($::decimal) \\(COLUMNS\\)."
set cmd "maint info screen"
set re \
[multi_line \
^$re1 \
$re2 \
"(?:$re3" \
")?$re4" \
.*]
gdb_test_multiple $cmd "" {
-re -wrap $re {
set gdb_width $expect_out(1,string)
set readline_width $expect_out(2,string)
set env_width $expect_out(3,string)
pass $gdb_test_name
}
}
}
proc test_wrap { width_auto_detected } {
if { ! [readline_is_used] } {
return
}
get_screen_width
if { $::term == "xterm" } {
gdb_assert { $gdb_width == $readline_width }
} else {
gdb_assert { $gdb_width == [expr $readline_width + 1] }
}
gdb_assert { $gdb_width == $env_width } "width"
# New prompt, but avoid emitting a pass in order to avoid ending the line
# after the prompt in gdb.log. This make it a bit easier in gdb.log to
# understand where wrapping occurred.
gdb_test_multiple "print 1" "" {
-re -wrap " = 1" {
}
}
# Fill the line to just before wrapping.
set str [fill_line $readline_width]
# Now print the first char we expect to wrap.
send_gdb "W"
# Note the difference between autowrap and no autowrap. In the autowrap
# case, readline doesn't emit a '\n', the terminal takes care of that.
if { $::term == "xterm" } {
# xterm, autowrap.
set re "^${str}( |W)\rW"
} else {
# ansi, no autowrap.
set re "^$str\r\n\rW"
}
gdb_test_multiple "" "wrap" {
-re $re {
pass $gdb_test_name
}
}
# Generate a prompt.
send_gdb "\003"
gdb_test "" "Quit" "prompt after wrap"
}
foreach_with_prefix term $terms {
save_vars { env(TERM) INTERNAL_GDBFLAGS } {
setenv TERM $term
with_test_prefix width-hard-coded {
clean_restart
# Env_width should match whatever was set in default_gdb_init
# using stty_init.
with_test_prefix initial {
get_screen_width
}
gdb_test_no_output "set width $env_width"
test_wrap 0
}
with_test_prefix width-auto-detected {
# Avoid "set width 0" argument.
set INTERNAL_GDBFLAGS \
[string map {{-iex "set width 0"} ""} $INTERNAL_GDBFLAGS]
# Avoid "set width 0" in default_gdb_start.
gdb_exit
gdb_spawn
set test "initial prompt"
gdb_test_multiple "" $test {
-re "^$gdb_prompt $" {
pass "$test"
}
}
test_wrap 1
}
}
}
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