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# This testcase is part of GDB, the GNU debugger.

# Copyright 2001, 2004, 2007, 2008, 2009, 2010 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 .

# Please email any bugs, comments, and/or additions to this file to:

# bug-gdb@gnu.org

# Test GDB's character set support.

if $tracelevel then {

        strace $tracelevel

}

set testfile "charset"

set srcfile ${testfile}.c

set srcmallocfile ${testfile}-malloc.c

if { [prepare_for_testing ${testfile}.exp ${testfile} [list $srcfile $srcmallocfile]] } {

    return -1

}

# Parse the output from a `show charset' command.  Return the host

# and target charset as a two-element list.

proc parse_show_charset_output {testname} {

    global gdb_prompt

    gdb_expect {

        -re "The host character set is \"(.*)\"\\.\[\r\n\]+The target character set is \"(.*)\"\\.\[\r\n\]+The target wide character set is \"(.*)\"\\.\[\r\n\]+$gdb_prompt $" {

            set host_charset $expect_out(1,string)

            set target_charset $expect_out(2,string)

            set retlist [list $host_charset $target_charset]

            pass $testname

        }

        -re "The host character set is \"(.*)\"\\.\[\r\n\]+$gdb_prompt $" {

            set host_charset $expect_out(1,string)

            set retlist [list $host_charset]

            pass $testname

        }

        -re "The target character set is \"(.*)\"\\.\[\r\n\]+$gdb_prompt $" {

            set target_charset $expect_out(1,string)

            set retlist [list $target_charset]

            pass $testname

        }

        -re ".*$gdb_prompt $" {

            fail $testname

        }

        timeout {

            fail "$testname (timeout)"

        }

    }

    return $retlist

}

# Try the various `show charset' commands.

send_gdb "show charset\n"

set show_charset [parse_show_charset_output "show charset"]

send_gdb "show target-charset\n"

set show_target_charset \

  [lindex [parse_show_charset_output "show target-charset"] 0]

if {[lsearch -exact $show_charset $show_target_charset] >= 0} {

    pass "check `show target-charset' against `show charset'"

} else {

    fail "check `show target-charset' against `show charset'"

}

send_gdb "show host-charset\n"

set show_host_charset \

  [lindex [parse_show_charset_output "show host-charset"] 0]

if {[lsearch -exact $show_charset $show_host_charset] >= 0} {

    pass "check `show host-charset' against `show charset'"

} else {

    fail "check `show host-charset' against `show charset'"

}

# Try a malformed `set charset'.

gdb_test "set charset" \

         "Requires an argument. Valid arguments are.*" \

         "try malformed `set charset'"

# Try using `set host-charset' on an invalid character set.

gdb_test "set host-charset my_grandma_bonnie" \

         "Undefined item: \"my_grandma_bonnie\"." \

         "try `set host-charset' with invalid charset"

# Try using `set target-charset' on an invalid character set.

gdb_test "set target-charset my_grandma_bonnie" \

         "Undefined item: \"my_grandma_bonnie\"." \

         "try `set target-charset' with invalid charset"

# A Tcl array mapping the names of all the character sets we've seen

# to "1" if the character set can be used as a host character set, or

# "0" otherwise.  We can use `array names charsets' just to get a list

# of all character sets.

array set charsets {}

proc all_charset_names {} {

    global charsets

    return [array names charsets]

}

proc valid_host_charset {charset} {

    global charsets

    return [expr {[info exists charsets($charset)] && $charsets($charset)}]

}

proc valid_target_charset {charset} {

    global charsets

    return [info exists charsets($charset)]

}

send_gdb "set host-charset\n"

gdb_expect {

    -re "Requires an argument. Valid arguments are (.*)\\.\r\n$gdb_prompt $" {

        set host_charset_list $expect_out(1,string)

        regsub -all {, } $host_charset_list {,} host_charset_list

        foreach host_charset [split $host_charset_list ","] {

            set charsets($host_charset) 1

        }

        pass "capture valid host charsets"

    }

    -re ".*$gdb_prompt $" {

        fail "capture valid host charsets"

    }

    timeout {

        fail "(timeout) capture valid host charsets"

    }

}

# If gdb was built with a phony iconv, it will only have two character

# sets: "auto" and the default.  In this situation, this set of tests

# is pointless.

if {[llength [array names charsets]] < 3} {

    untested charset.exp

    return -1

}

send_gdb "set target-charset\n"

gdb_expect {

    -re "Requires an argument. Valid arguments are (.*)\\.\r\n$gdb_prompt $" {

        set target_charset_list $expect_out(1,string)

        regsub -all {, } $target_charset_list {,} target_charset_list

        foreach target_charset [split $target_charset_list ","] {

            if {! [info exists charsets($target_charset)]} {

                set charsets($target_charset) 0

            }

        }

        pass "capture valid target charsets"

    }

    -re ".*$gdb_prompt $" {

        fail "capture valid target charsets"

    }

    timeout {

        fail "(timeout) capture valid target charsets"

    }

}

# We don't want to test all the charset names here, since that would

# be too many combinations.  We we pick a subset.

set charset_subset {ASCII ISO-8859-1 EBCDIC-US IBM1047}

foreach host_charset $charset_subset {

    if {[valid_host_charset $host_charset]} {

        set testname "try `set host-charset $host_charset'"

        send_gdb "set host-charset $host_charset\n"

        gdb_expect {

            -re "GDB doesn't know of any character set named.*\[\r\n]+${gdb_prompt} $" {

                # How did it get into `charsets' then?

                fail "$testname (didn't recognize name)"

            }

            -re "GDB can't use `.*' as its host character set\\.\[\r\n]+${gdb_prompt} $" {

                # Well, then why does its `charsets' entry say it can?

                fail $testname

            }

            -re "${gdb_prompt} $" {

                pass $testname

            }

            timeout {

                fail "$testname (timeout)"

            }

        }

        # Check that the command actually had its intended effect:

        # $host_charset should now be the host character set.

        send_gdb "show charset\n"

        set result [parse_show_charset_output "parse `show charset' after `set host-charset $host_charset'"]

        if {! [string compare [lindex $result 0] $host_charset]} {

            pass "check effect of `set host-charset $host_charset'"

        } else {

            fail "check effect of `set host-charset $host_charset'"

        }

        # Now try setting every possible target character set,

        # given that host charset.

        foreach target_charset $charset_subset {

            if {![valid_target_charset $target_charset]} {

                continue

            }

            set testname "try `set target-charset $target_charset'"

            send_gdb "set target-charset $target_charset\n"

            gdb_expect {

                -re "GDB doesn't know of any character set named.*\[\r\n]+${gdb_prompt} $" {

                    fail "$testname (didn't recognize name)"

                }

                -re "GDB can't convert from the .* character set to .*\\.\[\r\n\]+${gdb_prompt} $" {

                    # This is a serious problem.  GDB should be able to convert

                    # between any arbitrary pair of character sets.

                    fail "$testname (can't convert)"

                }

                -re "${gdb_prompt} $" {

                    pass $testname

                }

                timeout {

                    fail "$testname (timeout)"

                }

            }

            # Check that the command actually had its intended effect:

            # $target_charset should now be the target charset.

            send_gdb "show charset\n"

            set result [parse_show_charset_output "parse `show charset' after `set target-charset $target_charset'"]

            if {! [string compare $result [list $host_charset $target_charset]]} {

                pass "check effect of `set target-charset $target_charset'"

            } else {

                fail "check effect of `set target-charset $target_charset'"

            }

            # Test handling of characters in the host charset which

            # can't be translated into the target charset.  \xA2 is

            # `cent' in ISO-8859-1, which has no equivalent in ASCII.

            #

            # On some systems, the pseudo-tty through which we

            # communicate with GDB insists on stripping the high bit

            # from input characters, meaning that `cent' turns into

            # `"'.  Since ISO-8859-1 and ASCII are identical in the

            # lower 128 characters, it's tough to see how we can test

            # this behavior on such systems, so we just xfail it.

            #

            # Note: the \x16 (Control-V) is an escape to allow \xA2 to

            # get past readline.

            if {! [string compare $host_charset iso-8859-1] && ! [string compare $target_charset ascii]} {

                set testname "untranslatable character in character literal"

                send_gdb "print '\x16\xA2'\n"

                gdb_expect {

                    -re "There is no character corresponding to .* in the target character set .*\\.\[\r\n\]+$gdb_prompt $" {

                        pass $testname

                    }

                    -re " = 34 '\"'\[\r\n\]+$gdb_prompt $" {

                        xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"

                    }

                    -re "$gdb_prompt $" {

                        fail $testname

                    }

                    timeout {

                        fail "$testname (timeout)"

                    }

                }

                set testname "untranslatable character in string literal"

                # If the PTTY zeros bit seven, then this turns into

                #   print """

                # which gets us a syntax error.  We don't care.

                send_gdb "print \"\x16\xA2\"\n"

                gdb_expect {

                    -re "There is no character corresponding to .* in the target character set .*\\.\[\r\n\]+$gdb_prompt $" {

                        pass $testname

                    }

                    -re "Unterminated string in expression.\[\r\n\]+$gdb_prompt $" {

                        xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"

                    }

                    -re "$gdb_prompt $" {

                        fail $testname

                    }

                    timeout {

                        fail "$testname (timeout)"

                    }

                }

                set testname "untranslatable characters in backslash escape"

                send_gdb "print '\\\x16\xA2'\n"

                gdb_expect {

                    -re "The escape sequence .* is equivalent to plain .*, which has no equivalent\[\r\n\]+in the .* character set\\.\[\r\n\]+$gdb_prompt $" {

                        pass $testname

                    }

                    -re " = 34 '\"'\[\r\n\]+$gdb_prompt $" {

                        xfail "$testname (DejaGNU's pseudo-tty strips eighth bit)"

                    }

                    -re "$gdb_prompt $" {

                        fail $testname

                    }

                    timeout {

                        fail "$testname (timeout)"

                    }

                }

            }

        }

    }

}

# Set the host character set to plain ASCII, and try actually printing

# some strings in various target character sets.  We need to run the

# test program to the point at which the strings have been

# initialized.

gdb_test "break ${srcfile}:[gdb_get_line_number "all strings initialized"]" \

         ".*Breakpoint.* at .*" \

         "set breakpoint after all strings have been initialized"

gdb_run_cmd

gdb_expect {

    -re "Breakpoint.*all strings initialized.*$gdb_prompt $" {

        pass "run until all strings have been initialized"

    }

    -re "$gdb_prompt $" {

        fail "run until all strings have been initialized"

    }

    timeout {

        fail "run until all strings have been initialized (timeout)"

    }

}

# We only try the wide character tests on machines where the wchar_t

# typedef in the test case has the right size.

set wchar_size [get_sizeof wchar_t 99]

set wchar_ok 0

if {$wchar_size == 2} {

    lappend charset_subset UTF-16

    set wchar_ok 1

} elseif {$wchar_size == 4} {

    lappend charset_subset UTF-32

    set wchar_ok 1

}

gdb_test_no_output "set host-charset ASCII"

foreach target_charset $charset_subset {

    if {![valid_target_charset $target_charset]} {

        continue

    }

    if {$target_charset == "UTF-32" || $target_charset == "UTF-16"} {

        set param target-wide-charset

        set L L

    } else {

        set param target-charset

        set L ""

    }

    gdb_test_no_output "set $param $target_charset"

    # Try printing the null character.  There seems to be a bug in

    # gdb_test that requires us to use gdb_expect here.

    send_gdb "print $L'\\0'\n"

    gdb_expect {

        -re "\\\$${decimal} = 0 $L'\\\\000'\[\r\n\]+$gdb_prompt $" {

            pass "print the null character in ${target_charset}"

        }

        -re "$gdb_prompt $" {

            fail "print the null character in ${target_charset}"

        }

        timeout {

            fail "print the null character in ${target_charset} (timeout)"

        }

    }

    # Compute the name of the variable in the test program that holds

    # a string in $target_charset.  The variable's name is the

    # character set's name, in lower-case, with all non-identifier

    # characters replaced with '_', with "_string" stuck on the end.

    if {$target_charset == "UTF-16"} {

        # We still use the utf_32_string variable -- but the size is

        # correct for UTF-16.

        set var_name utf_32_string

    } else {

        set var_name [string tolower "${target_charset}_string"]

        regsub -all -- "\[^a-z0-9_\]" $var_name "_" var_name

    }

    # Compute a regexp matching the results we expect.  This is static,

    # but it's easier than writing it out.

    regsub -all "." "abfnrtv" "(\\\\&|x)" escapes

    set uppercase "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

    set lowercase "abcdefghijklmnopqrstuvwxyz"

    set digits "0123456789"

    set octal_escape "\\\\\[0-9\]+"

    send_gdb "print $var_name\n"

    # ${escapes}${uppercase}${lowercase}${digits}${octal}${octal}

    gdb_expect {

        -re ".* = $L\"(\\\\a|x)(\\\\b|x)(\\\\f|x)(\\\\n|x)(\\\\r|x)(\\\\t|x)(\\\\v|x)${uppercase}${lowercase}${digits}(${octal_escape}|x)+\"\[\r\n\]+$gdb_prompt $" {

            pass "print string in $target_charset"

        }

        -re "$gdb_prompt $" {

            fail "print string in $target_charset"

        }

        timeout {

            fail "print string in $target_charset (timeout)"

        }

    }

    # Try entering a character literal, and see if it comes back unchanged.

    gdb_test "print $L'A'" \

             " = \[0-9-\]+ $L'A'" \

             "parse character literal in ${target_charset}"

    # Check that the character literal was encoded correctly.

    gdb_test "print $L'A' == $var_name\[7\]" \

             " = 1" \

             "check value of parsed character literal in ${target_charset}"

    # Try entering a string literal, and see if it comes back unchanged.

    gdb_test "print $L\"abcdefABCDEF012345\"" \

             " = $L\"abcdefABCDEF012345\"" \

             "parse string literal in ${target_charset}"

    # Check that the string literal was encoded correctly.

    gdb_test "print $L\"q\"\[0\] == $var_name\[49\]" \

             " = 1" \

             "check value of parsed string literal in ${target_charset}"

    # Test handling of characters in the target charset which

    # can't be translated into the host charset.

    if {! [string compare $target_charset iso-8859-1]} {

        gdb_test "print iso_8859_1_string\[69\]" \

                 " = \[0-9-\]+ '\\\\242'" \

                 "print character with no equivalent in host character set"

        gdb_test "print iso_8859_1_string + 70" \

                 " = ${hex} \"\\\\242.*\"" \

                 "print string with no equivalent in host character set"

    }

    # Make sure that we don't apply the ISO-8859-1 `print_literally'

    # function to ASCII.

    if {! [string compare $target_charset ascii]} {

        gdb_test "print iso_8859_1_string\[69\]" \

                 " = \[0-9-\]+ '\\\\242'" \

                 "print ASCII unprintable character"

        gdb_test "print iso_8859_1_string + 70" \

                 " = ${hex} \"\\\\242.*\"" \

                 "print ASCII unprintable string"

    }

    # Try printing characters with backslash escape equivalents.

    set escapees {a b f n r t v}

    for {set i 0} {$i < [llength $escapees]} {incr i} {

        set escape [lindex $escapees $i]

        send_gdb "print $var_name\[$i\]\n"

        set have_escape 1

        gdb_expect {

            -re "= \[0-9-\]+ $L'\\\\${escape}'\[\r\n\]+$gdb_prompt $" {

                pass "try printing '\\${escape}' in ${target_charset}"

            }

            -re "= \[0-9-\]+ 'x'\[\r\n\]+$gdb_prompt $" {

                xfail "try printing '\\${escape}' in ${target_charset} (no such escape)"

                set have_escape 0

            }

            -re "$gdb_prompt $" {

                fail "try printing '\\${escape}' in ${target_charset}"

            }

            timeout {

                fail "try printing '\\${escape}' in ${target_charset} (timeout)"

            }

        }

        if {$have_escape} {

            # Try parsing a backslash escape in a character literal.

            gdb_test "print $L'\\${escape}' == $var_name\[$i\]" \

                     " = 1" \

                     "check value of '\\${escape}' in ${target_charset}"

            # Try parsing a backslash escape in a string literal.

            gdb_test "print $L\"\\${escape}\"\[0\] == $var_name\[$i\]" \

                     " = 1" \

                     "check value of \"\\${escape}\" in ${target_charset}"

        }

    }

    # Try printing a character escape that doesn't exist.  We should

    # get the unescaped character, in the target character set.

    gdb_test "print $L'\\q'" " = \[0-9-\]+ $L'q'" \

             "print escape that doesn't exist in $target_charset"

    gdb_test "print $L'\\q' == $var_name\[49\]" " = 1" \

             "check value of escape that doesn't exist in $target_charset"

}

# Reset the target charset.

gdb_test_no_output "set target-charset UTF-8"

# \242 is not a valid UTF-8 character.

gdb_test "print \"\\242\"" " = \"\\\\242\"" \

  "non-representable target character"

gdb_test "print '\\x'" "\\\\x escape without a following hex digit."

gdb_test "print '\\u'" "\\\\u escape without a following hex digit."

gdb_test "print '\\9'" " = \[0-9\]+ '9'"

# An octal escape can only be 3 digits.

gdb_test "print \"\\1011\"" " = \"A1\""

# Tests for wide- or unicode- strings.  L is the prefix letter to use,

# either "L" (for wide strings), "u" (for UTF-16), or "U" (for UTF-32).

# NAME is used in the test names and should be related to the prefix

# letter in some easy-to-undestand way.

proc test_wide_or_unicode {L name} {

    gdb_test "print $L\"ab\" $L\"c\"" " = $L\"abc\"" \

      "basic $name string concatenation"

    gdb_test "print $L\"ab\" \"c\"" " = $L\"abc\"" \

      "narrow and $name string concatenation"

    gdb_test "print \"ab\" $L\"c\"" " = $L\"abc\"" \

      "$name and narrow string concatenation"

    gdb_test "print $L\"\\xe\" $L\"c\"" " = $L\"\\\\016c\"" \

      "$name string concatenation with escape"

    gdb_test "print $L\"\" \"abcdef\" \"g\"" \

      "$L\"abcdefg\"" \

      "concatenate three strings with empty $name string"

    gdb_test "print $L'a'" "= \[0-9\]+ $L'a'" \

      "basic $name character"

}

if {$wchar_ok} {

    test_wide_or_unicode L wide

}

set ucs2_ok [expr {[get_sizeof char16_t 99] == 2}]

if {$ucs2_ok} {

    test_wide_or_unicode u UTF-16

}

set ucs4_ok [expr {[get_sizeof char32_t 99] == 4}]

if {$ucs4_ok} {

    test_wide_or_unicode U UTF-32

}

# Test an invalid string combination.

proc test_combination {L1 name1 L2 name2} {

    gdb_test "print $L1\"abc\" $L2\"def\"" \

      "Undefined string concatenation." \

      "undefined concatenation of $name1 and $name2"

}

if {$wchar_ok && $ucs2_ok} {

    test_combination L wide u UTF-16

}

if {$wchar_ok && $ucs4_ok} {

    test_combination L wide U UTF-32

  # Regression test for a typedef to a typedef.

  gdb_test "print myvar" "= \[0-9\]+ L'A'" \

      "typedef to wchar_t"

}

if {$ucs2_ok && $ucs4_ok} {

    test_combination u UTF-16 U UTF-32

}

if {$ucs2_ok} {

    set go 1

    gdb_test_multiple "python print 'hello, world!'" \

        "verify python support for charset tests" {

            -re "not supported.*$gdb_prompt $"  {

                unsupported "python support is disabled"

                set go 0

            }

            -re "$gdb_prompt $" {}

        }

    if {$go} {

        gdb_test "print u\"abcdef\"" " = u\"abcdef\"" \

            "set up for python printing of utf-16 string"

        gdb_test "python print gdb.history(0).string()" "abcdef" \

            "extract utf-16 string using python"

    }

}

# Regression test for a cleanup bug in the charset code.

gdb_test "print 'a' == 'a' || 'b' == 'b'" \

  ".* = 1" \

  "EVAL_SKIP cleanup handling regression test"

proc string_display { var_name set_prefix x_size x_type} {

  gdb_test_no_output "set ${var_name} = ${set_prefix}\"Test String\\0with zeroes\"" "Assign ${var_name} with prefix ${set_prefix}"

  gdb_test "x /2${x_size}s ${var_name}" ".* ${x_type}\"Test String\"\[\r\n\]+.* ${x_type}\"with zeroes\"" "Display String ${var_name} with x/${x_size}s"

}

string_display String16 u h u

if {$wchar_size == 2} {

  string_display String16 L h u

}

string_display String32 U w U

if {$wchar_size == 4} {

  string_display String32 L w U

}

gdb_exit