# This file contains a collection of tests for tclEncoding.c
# Sourcing this file into Tcl runs the tests and generates output for errors.
# No output means no errors were found.
#
# Copyright (c) 1997 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 Scriptics Corporation.
#
# See the file "license.terms" for information on usage and redistribution of
# this file, and for a DISCLAIMER OF ALL WARRANTIES.

if {"::tcltest" ni [namespace children]} {
    package require tcltest 2.5
    namespace import -force ::tcltest::*
}

namespace eval ::tcl::test::encoding {
    variable x

catch {
    ::tcltest::loadTestedCommands
    package require -exact Tcltest [info patchlevel]
}

proc toutf {args} {
    variable x
    lappend x "toutf $args"
}
proc fromutf {args} {
    variable x
    lappend x "fromutf $args"
}

proc runtests {} {
    variable x

# Some tests require the testencoding command
testConstraint testencoding [llength [info commands testencoding]]
testConstraint testbytestring [llength [info commands testbytestring]]
testConstraint teststringbytes [llength [info commands teststringbytes]]
testConstraint ucs2 [expr {[format %c 0x010000] eq "\uFFFD"}]
testConstraint fullutf [expr {[format %c 0x010000] ne "\uFFFD"}]
testConstraint exec [llength [info commands exec]]
testConstraint testgetdefenc [llength [info commands testgetdefenc]]

# TclInitEncodingSubsystem is tested by the rest of this file
# TclFinalizeEncodingSubsystem is not currently tested

test encoding-1.1 {Tcl_GetEncoding: system encoding} -setup {
    set old [encoding system]
} -constraints {testencoding} -body {
    testencoding create foo [namespace origin toutf] [namespace origin fromutf]
    encoding system foo
    set x {}
    encoding convertto abcd
    return $x
} -cleanup {
    encoding system $old
    testencoding delete foo
} -result {{fromutf }}
test encoding-1.2 {Tcl_GetEncoding: existing encoding} {testencoding} {
    testencoding create foo [namespace origin toutf] [namespace origin fromutf]
    set x {}
    encoding convertto foo abcd
    testencoding delete foo
    return $x
} {{fromutf }}
test encoding-1.3 {Tcl_GetEncoding: load encoding} {
    list [encoding convertto jis0208 \u4E4E] \
	[encoding convertfrom jis0208 8C]
} "8C \u4E4E"

test encoding-2.1 {Tcl_FreeEncoding: refcount == 0} {
    encoding convertto jis0208 \u4E4E
} {8C}
test encoding-2.2 {Tcl_FreeEncoding: refcount != 0} -setup {
    set system [encoding system]
    set path [encoding dirs]
} -constraints {testencoding} -body {
    encoding system shiftjis		;# incr ref count
    encoding dirs [list [pwd]]
    set x [encoding convertto shiftjis \u4E4E]	;# old one found
    encoding system iso8859-1
    llength shiftjis		;# Shimmer away any cache of Tcl_Encoding
    lappend x [catch {encoding convertto shiftjis \u4E4E} msg] $msg
} -cleanup {
    encoding system iso8859-1
    encoding dirs $path
    encoding system $system
} -result "\x8C\xC1 1 {unknown encoding \"shiftjis\"}"

test encoding-3.1 {Tcl_GetEncodingName, NULL} -setup {
    set old [encoding system]
} -body {
    encoding system shiftjis
    encoding system
} -cleanup {
    encoding system $old
} -result {shiftjis}
test encoding-3.2 {Tcl_GetEncodingName, non-null} -setup {
    set old [fconfigure stdout -encoding]
} -body {
    fconfigure stdout -encoding jis0208
    fconfigure stdout -encoding
} -cleanup {
    fconfigure stdout -encoding $old
} -result {jis0208}

test encoding-4.1 {Tcl_GetEncodingNames} -constraints {testencoding} -setup {
    cd [makeDirectory tmp]
    makeDirectory [file join tmp encoding]
    set path [encoding dirs]
    encoding dirs {}
    catch {unset encodings}
    catch {unset x}
} -body {
    foreach encoding [encoding names] {
	set encodings($encoding) 1
    }
    makeFile {} [file join tmp encoding junk.enc]
    makeFile {} [file join tmp encoding junk2.enc]
    encoding dirs [list [file join [pwd] encoding]]
    foreach encoding [encoding names] {
	if {![info exists encodings($encoding)]} {
	    lappend x $encoding
	}
    }
    lsort $x
} -cleanup {
    encoding dirs $path
    cd [workingDirectory]
    removeFile [file join tmp encoding junk2.enc]
    removeFile [file join tmp encoding junk.enc]
    removeDirectory [file join tmp encoding]
    removeDirectory tmp
} -result {junk junk2}

test encoding-5.1 {Tcl_SetSystemEncoding} -setup {
    set old [encoding system]
} -body {
    encoding system jis0208
    encoding convertto \u4E4E
} -cleanup {
    encoding system iso8859-1
    encoding system $old
} -result {8C}
test encoding-5.2 {Tcl_SetSystemEncoding: test ref count} {
    set old [encoding system]
    encoding system $old
    string compare $old [encoding system]
} {0}

test encoding-6.1 {Tcl_CreateEncoding: new} {testencoding} {
    testencoding create foo [namespace code {toutf 1}] \
	[namespace code {fromutf 2}]
    set x {}
    encoding convertfrom foo abcd
    encoding convertto foo abcd
    testencoding delete foo
    return $x
} {{toutf 1} {fromutf 2}}
test encoding-6.2 {Tcl_CreateEncoding: replace encoding} {testencoding} {
    testencoding create foo [namespace code {toutf a}] \
	[namespace code {fromutf b}]
    set x {}
    encoding convertfrom foo abcd
    encoding convertto foo abcd
    testencoding delete foo
    return $x
} {{toutf a} {fromutf b}}

test encoding-7.1 {Tcl_ExternalToUtfDString: small buffer} {
    encoding convertfrom jis0208 8c8c8c8c
} "\u543E\u543E\u543E\u543E"
test encoding-7.2 {Tcl_UtfToExternalDString: big buffer} {
    set a 8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C8C
    append a $a
    append a $a
    append a $a
    append a $a
    set x [encoding convertfrom jis0208 $a]
    list [string length $x] [string index $x 0]
} "512 \u4E4E"

test encoding-8.1 {Tcl_ExternalToUtf} {
    set f [open [file join [temporaryDirectory] dummy] w]
    fconfigure $f -translation binary
    puts -nonewline $f "ab\x8C\xC1g"
    close $f
    set f [open [file join [temporaryDirectory] dummy] r]
    fconfigure $f -translation lf -encoding shiftjis
    set x [read $f]
    close $f
    file delete [file join [temporaryDirectory] dummy]
    return $x
} "ab\u4E4Eg"

test encoding-9.1 {Tcl_UtfToExternalDString: small buffer} {
    encoding convertto jis0208 "\u543E\u543E\u543E\u543E"
} {8c8c8c8c}
test encoding-9.2 {Tcl_UtfToExternalDString: big buffer} {
    set a \u4E4E\u4E4E\u4E4E\u4E4E\u4E4E\u4E4E\u4E4E\u4E4E
    append a $a
    append a $a
    append a $a
    append a $a
    append a $a
    append a $a
    set x [encoding convertto jis0208 $a]
    list [string length $x] [string range $x 0 1]
} "1024 8C"

test encoding-10.1 {Tcl_UtfToExternal} {
    set f [open [file join [temporaryDirectory] dummy] w]
    fconfigure $f -translation lf -encoding shiftjis
    puts -nonewline $f "ab\u4E4Eg"
    close $f
    set f [open [file join [temporaryDirectory] dummy] r]
    fconfigure $f -translation binary
    set x [read $f]
    close $f
    file delete [file join [temporaryDirectory] dummy]
    return $x
} "ab\x8C\xC1g"

proc viewable {str} {
    set res ""
    foreach c [split $str {}] {
	if {[string is print $c] && [string is ascii $c]} {
	    append res $c
	} else {
	    append res "\\u[format %4.4X [scan $c %c]]"
	}
    }
    return "$str ($res)"
}

test encoding-11.1 {LoadEncodingFile: unknown encoding} {testencoding} {
    set system [encoding system]
    set path [encoding dirs]
    encoding system iso8859-1
    encoding dirs {}
    llength jis0208	;# Shimmer any cached Tcl_Encoding in shared literal
    set x [list [catch {encoding convertto jis0208 \u4E4E} msg] $msg]
    encoding dirs $path
    encoding system $system
    lappend x [encoding convertto jis0208 \u4E4E]
} {1 {unknown encoding "jis0208"} 8C}
test encoding-11.2 {LoadEncodingFile: single-byte} {
    encoding convertfrom jis0201 \xA1
} \uFF61
test encoding-11.3 {LoadEncodingFile: double-byte} {
    encoding convertfrom jis0208 8C
} \u4E4E
test encoding-11.4 {LoadEncodingFile: multi-byte} {
    encoding convertfrom shiftjis \x8C\xC1
} \u4E4E
test encoding-11.5 {LoadEncodingFile: escape file} {
    viewable [encoding convertto iso2022 \u4E4E]
} [viewable "\x1B\$B8C\x1B(B"]
test encoding-11.5.1 {LoadEncodingFile: escape file} {
    viewable [encoding convertto iso2022-jp \u4E4E]
} [viewable "\x1B\$B8C\x1B(B"]
test encoding-11.6 {LoadEncodingFile: invalid file} -constraints {testencoding} -setup {
    set system [encoding system]
    set path [encoding dirs]
    encoding system iso8859-1
} -body {
    cd [temporaryDirectory]
    encoding dirs [file join tmp encoding]
    makeDirectory tmp
    makeDirectory [file join tmp encoding]
    set f [open [file join tmp encoding splat.enc] w]
    fconfigure $f -translation binary
    puts $f "abcdefghijklmnop"
    close $f
    encoding convertto splat \u4E4E
} -returnCodes error -cleanup {
    file delete [file join [temporaryDirectory] tmp encoding splat.enc]
    removeDirectory [file join tmp encoding]
    removeDirectory tmp
    cd [workingDirectory]
    encoding dirs $path
    encoding system $system
} -result {invalid encoding file "splat"}

# OpenEncodingFile is fully tested by the rest of the tests in this file.

test encoding-12.1 {LoadTableEncoding: normal encoding} {
    set x [encoding convertto iso8859-3 \u0120]
    append x [encoding convertto iso8859-3 \xD5]
    append x [encoding convertfrom iso8859-3 \xD5]
} \xD5?\u0120
test encoding-12.2 {LoadTableEncoding: single-byte encoding} {
    set x [encoding convertto iso8859-3 ab\u0120g]
    append x [encoding convertfrom iso8859-3 ab\xD5g]
} ab\xD5gab\u0120g
test encoding-12.3 {LoadTableEncoding: multi-byte encoding} {
    set x [encoding convertto shiftjis ab\u4E4Eg]
    append x [encoding convertfrom shiftjis ab\x8C\xC1g]
} ab\x8C\xC1gab\u4E4Eg
test encoding-12.4 {LoadTableEncoding: double-byte encoding} {
    set x [encoding convertto jis0208 \u4E4E\u03B1]
    append x [encoding convertfrom jis0208 8C&A]
} 8C&A\u4E4E\u03B1
test encoding-12.5 {LoadTableEncoding: symbol encoding} {
    set x [encoding convertto symbol \u03B3]
    append x [encoding convertto symbol g]
    append x [encoding convertfrom symbol g]
} gg\u03B3
test encoding-12.6 {LoadTableEncoding: overflow in char value} ucs2 {
    encoding convertto iso8859-3 \U010000
} ?

test encoding-13.1 {LoadEscapeTable} {
    viewable [set x [encoding convertto iso2022 ab\u4E4E\u68D9g]]
} [viewable "ab\x1B\$B8C\x1B\$\(DD%\x1B(Bg"]

test encoding-14.1 {BinaryProc} {
    encoding convertto identity \x12\x34\x56\xff\x69
} "\x12\x34\x56\xc3\xbf\x69"

test encoding-15.1 {UtfToUtfProc} {
    encoding convertto utf-8 \xA3
} "\xC2\xA3"
test encoding-15.2 {UtfToUtfProc null character output} testbytestring {
    binary scan [testbytestring [encoding convertto utf-8 \x00]] H* z
    set z
} 00
test encoding-15.3 {UtfToUtfProc null character input} teststringbytes {
    set y [encoding convertfrom utf-8 [encoding convertto utf-8 \x00]]
    binary scan [teststringbytes $y] H* z
    set z
} c080
test encoding-15.4 {UtfToUtfProc emoji character input} -body {
    set x \xED\xA0\xBD\xED\xB8\x82
    set y [encoding convertfrom utf-8 \xED\xA0\xBD\xED\xB8\x82]
    list [string length $x] $y
} -result "6 \uD83D\uDE02"
test encoding-15.5 {UtfToUtfProc emoji character input} {
    set x \xF0\x9F\x98\x82
    set y [encoding convertfrom utf-8 \xF0\x9F\x98\x82]
    list [string length $x] $y
} "4 \uD83D\uDE02"
test encoding-15.6 {UtfToUtfProc emoji character output} {
    set x \uDE02\uD83D\uDE02\uD83D
    set y [encoding convertto utf-8 \uDE02\uD83D\uDE02\uD83D]
    binary scan $y H* z
    list [string length $y] $z
} {10 edb882f09f9882eda0bd}
test encoding-15.7 {UtfToUtfProc emoji character output} {
    set x \uDE02\uD83D\uD83D
    set y [encoding convertto utf-8 \uDE02\uD83D\uD83D]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {3 9 edb882eda0bdeda0bd}
test encoding-15.8 {UtfToUtfProc emoji character output} {
    set x \uDE02\uD83D\xE9
    set y [encoding convertto utf-8 \uDE02\uD83D\xE9]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {3 8 edb882eda0bdc3a9}
test encoding-15.9 {UtfToUtfProc emoji character output} {
    set x \uDE02\uD83DX
    set y [encoding convertto utf-8 \uDE02\uD83DX]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {3 7 edb882eda0bd58}
test encoding-15.10 {UtfToUtfProc high surrogate character output} {
    set x \uDE02\xE9
    set y [encoding convertto utf-8 \uDE02\xE9]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {2 5 edb882c3a9}
test encoding-15.11 {UtfToUtfProc low surrogate character output} {
    set x \uDA02\xE9
    set y [encoding convertto utf-8 \uDA02\xE9]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {2 5 eda882c3a9}
test encoding-15.12 {UtfToUtfProc high surrogate character output} {
    set x \uDE02Y
    set y [encoding convertto utf-8 \uDE02Y]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {2 4 edb88259}
test encoding-15.13 {UtfToUtfProc low surrogate character output} {
    set x \uDA02Y
    set y [encoding convertto utf-8 \uDA02Y]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {2 4 eda88259}
test encoding-15.14 {UtfToUtfProc high surrogate character output} {
    set x \uDE02
    set y [encoding convertto utf-8 \uDE02]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {1 3 edb882}
test encoding-15.15 {UtfToUtfProc low surrogate character output} {
    set x \uDA02
    set y [encoding convertto utf-8 \uDA02]
    binary scan $y H* z
    list [string length $x] [string length $y] $z
} {1 3 eda882}
test encoding-15.16 {UtfToUtfProc: Invalid 4-byte UTF-8, see [ed29806ba]} {
    set x \xF0\xA0\xA1\xC2
    set y [encoding convertfrom utf-8 \xF0\xA0\xA1\xC2]
    list [string length $x] $y
} "4 \xF0\xA0\xA1\xC2"

test encoding-16.1 {UnicodeToUtfProc} -body {
    set val [encoding convertfrom unicode NN]
    list $val [format %X [scan $val %c]]
} -result "\u4E4E 4E4E"
test encoding-16.2 {UnicodeToUtfProc} -constraints fullutf -body {
    set val [encoding convertfrom unicode "\xD8\xD8\xDC\xDC"]
    list $val [format %x [scan $val %c]]
} -result "\U460DC 460dc"
test encoding-16.3 {UnicodeToUtfProc} -body {
    set val [encoding convertfrom unicode "\xDC\xDC"]
    list $val [format %X [scan $val %c]]
} -result "\uDCDC DCDC"
test encoding-16.4 {UnicodeToUtfProc, bug [d19fe0a5b]} -body {
    encoding convertfrom unicode "\x41\x41\x41"
} -result \u4141\uFFFD
test encoding-16.5 {UnicodeToUtfProc, bug [d19fe0a5b]} -constraints ucs2 -body {
    encoding convertfrom unicode "\xD8\xD8"
} -result \uD8D8

test encoding-17.1 {UtfToUnicodeProc} -constraints fullutf -body {
    encoding convertto unicode "\U460DC"
} -result "\xD8\xD8\xDC\xDC"
test encoding-17.2 {UtfToUnicodeProc} -body {
    encoding convertto unicode "\uDCDC"
} -result "\xDC\xDC"
test encoding-17.3 {UtfToUnicodeProc} -body {
    encoding convertto unicode "\uD8D8"
} -result "\xD8\xD8"

test encoding-18.1 {TableToUtfProc on invalid input} -body {
	list [catch {encoding convertto jis0208 \\} res] $res
} -result {0 !)}

test encoding-19.1 {TableFromUtfProc} {
} {}

test encoding-20.1 {TableFreefProc} {
} {}

test encoding-21.1 {EscapeToUtfProc} {
} {}

test encoding-22.1 {EscapeFromUtfProc} {
} {}

set iso2022encData "\x1B\$B;d\$I\$b\$G\$O!\"%A%C%W\$49XF~;~\$K\$4EPO?\$\$\$?\$@\$\$\$?\$4=;=j\$r%-%c%C%7%e%\"%&%H\$N:]\$N\x1B(B
\x1B\$B>.@Z<jAwIU@h\$H\$7\$F;HMQ\$7\$F\$*\$j\$^\$9!#62\$lF~\$j\$^\$9\$,!\"@5\$7\$\$=;=j\$r\$4EPO?\$7\$J\$*\x1B(B
\x1B\$B\$*4j\$\$\$\$\$?\$7\$^\$9!#\$^\$?!\"BgJQ62=L\$G\$9\$,!\"=;=jJQ99\$N\$\"\$H!\"F|K\\8l%5!<%S%9It!J\x1B(B
casino_japanese@___.com \x1B\$B!K\$^\$G\$4=;=jJQ99:Q\$NO\"Mm\$r\$\$\$?\$@\$1\$J\$\$\$G\x1B(B
\x1B\$B\$7\$g\$&\$+!)\x1B(B"

set iso2022uniData [encoding convertfrom iso2022-jp $iso2022encData]
set iso2022uniData2 "\u79c1\u3069\u3082\u3067\u306f\u3001\u30c1\u30c3\u30d7\u3054\u8cfc\u5165\u6642\u306b\u3054\u767b\u9332\u3044\u305f\u3060\u3044\u305f\u3054\u4f4f\u6240\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u30a2\u30a6\u30c8\u306e\u969b\u306e
\u5c0f\u5207\u624b\u9001\u4ed8\u5148\u3068\u3057\u3066\u4f7f\u7528\u3057\u3066\u304a\u308a\u307e\u3059\u3002\u6050\u308c\u5165\u308a\u307e\u3059\u304c\u3001\u6b63\u3057\u3044\u4f4f\u6240\u3092\u3054\u767b\u9332\u3057\u306a\u304a
\u304a\u9858\u3044\u3044\u305f\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u5927\u5909\u6050\u7e2e\u3067\u3059\u304c\u3001\u4f4f\u6240\u5909\u66f4\u306e\u3042\u3068\u3001\u65e5\u672c\u8a9e\u30b5\u30fc\u30d3\u30b9\u90e8\uff08
\u0063\u0061\u0073\u0069\u006e\u006f\u005f\u006a\u0061\u0070\u0061\u006e\u0065\u0073\u0065\u0040\u005f\u005f\u005f\u002e\u0063\u006f\u006d\u0020\uff09\u307e\u3067\u3054\u4f4f\u6240\u5909\u66f4\u6e08\u306e\u9023\u7d61\u3092\u3044\u305f\u3060\u3051\u306a\u3044\u3067
\u3057\u3087\u3046\u304b\uff1f"

cd [temporaryDirectory]
set fid [open iso2022.txt w]
fconfigure $fid -encoding binary
puts -nonewline $fid $iso2022encData
close $fid

test encoding-23.1 {iso2022-jp escape encoding test} {
    string equal $iso2022uniData $iso2022uniData2
} 1
test encoding-23.2 {iso2022-jp escape encoding test} {
    # This checks that 'gets' isn't resetting the encoding inappropriately.
    # [Bug #523988]
    set fid [open iso2022.txt r]
    fconfigure $fid -encoding iso2022-jp
    set out ""
    set count 0
    while {[set num [gets $fid line]] >= 0} {
	if {$count} {
	    incr count 1 ; # account for newline
	    append out \n
	}
	append out $line
	incr count $num
    }
    close $fid
    if {[string compare $iso2022uniData $out]} {
	return -code error "iso2022-jp read in doesn't match original"
    }
    list $count $out
} [list [string length $iso2022uniData] $iso2022uniData]
test encoding-23.3 {iso2022-jp escape encoding test} {
    # read $fis <size> reads size in chars, not raw bytes.
    set fid [open iso2022.txt r]
    fconfigure $fid -encoding iso2022-jp
    set data [read $fid 50]
    close $fid
    return $data
} [string range $iso2022uniData 0 49] ; # 0 .. 49 inclusive == 50
cd [workingDirectory]

# Code to make the next few tests more intelligible; the code being tested
# should be in the body of the test!
proc runInSubprocess {contents {filename iso2022.tcl}} {
    set theFile [makeFile $contents $filename]
    try {
	exec [interpreter] $theFile
    } finally {
	removeFile $theFile
    }
}

test encoding-24.1 {EscapeFreeProc on open channels} exec {
    runInSubprocess {
	set f [open [file join [file dirname [info script]] iso2022.txt]]
	fconfigure $f -encoding iso2022-jp
	gets $f
    }
} {}
test encoding-24.2 {EscapeFreeProc on open channels} {exec} {
    # Bug #524674 output
    viewable [runInSubprocess {
	encoding system cp1252;	# Bug #2891556 crash revelator
	fconfigure stdout -encoding iso2022-jp
	puts ab\u4E4E\u68D9g
	set env(TCL_FINALIZE_ON_EXIT) 1
	exit
    }]
} "ab\x1B\$B8C\x1B\$(DD%\x1B(Bg (ab\\u001B\$B8C\\u001B\$(DD%\\u001B(Bg)"
test encoding-24.3 {EscapeFreeProc on open channels} {stdio} {
    # Bug #219314 - if we don't free escape encodings correctly on channel
    # closure, we go boom
    set file [makeFile {
	encoding system iso2022-jp
	set a \u4E4E\u4E5E\u4E5F; # 3 Japanese Kanji letters
	puts $a
    } iso2022.tcl]
    set f [open "|[list [interpreter] $file]"]
    fconfigure $f -encoding iso2022-jp
    set count [gets $f line]
    close $f
    removeFile iso2022.tcl
    list $count [viewable $line]
} [list 3 "\u4E4E\u4E5E\u4E5F (\\u4E4E\\u4E5E\\u4E5F)"]

test encoding-24.4 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xC0\x80"]
} 1
test encoding-24.5 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xC0\x81"]
} 2
test encoding-24.6 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xC1\xBF"]
} 2
test encoding-24.7 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xC2\x80"]
} 1
test encoding-24.8 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xE0\x80\x80"]
} 3
test encoding-24.9 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xE0\x9F\xBF"]
} 3
test encoding-24.10 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xE0\xA0\x80"]
} 1
test encoding-24.11 {Parse valid or invalid utf-8} {
    string length [encoding convertfrom utf-8 "\xEF\xBF\xBF"]
} 1

file delete [file join [temporaryDirectory] iso2022.txt]

#
# Begin jajp encoding round-trip conformity tests
#
proc foreach-jisx0208 {varName command} {
    upvar 1 $varName code
    foreach range {
	{2121 217E}
	{2221 222E}
	{223A 2241}
	{224A 2250}
	{225C 226A}
	{2272 2279}
	{227E 227E}
	{2330 2339}
	{2421 2473}
	{2521 2576}
	{2821 2821}
	{282C 282C}
	{2837 2837}

	{30 21 4E 7E}
	{4F21 4F53}

	{50 21 73 7E}
	{7421 7426}
    } {
	if {[llength $range] == 2} {
	    # for adhoc range. simple {first last}. inclusive.
	    scan $range %x%x first last
	    for {set i $first} {$i <= $last} {incr i} {
		set code $i
		uplevel 1 $command
	    }
	} elseif {[llength $range] == 4} {
	    # for uniform range.
	    scan $range %x%x%x%x h0 l0 hend lend
	    for {set hi $h0} {$hi <= $hend} {incr hi} {
		for {set lo $l0} {$lo <= $lend} {incr lo} {
		    set code [expr {$hi << 8 | ($lo & 0xff)}]
		    uplevel 1 $command
		}
	    }
	} else {
	    error "really?"
	}
    }
}
proc gen-jisx0208-euc-jp {code} {
    binary format cc \
	[expr {($code >> 8) | 0x80}] [expr {($code & 0xFF) | 0x80}]
}
proc gen-jisx0208-iso2022-jp {code} {
    binary format a3cca3 \
	"\x1B\$B" [expr {$code >> 8}] [expr {$code & 0xFF}] "\x1B(B"
}
proc gen-jisx0208-cp932 {code} {
    set c1 [expr {($code >> 8) | 0x80}]
    set c2 [expr {($code & 0xff)| 0x80}]
    if {$c1 % 2} {
	set c1 [expr {($c1 >> 1) + ($c1 < 0xDF ? 0x31 : 0x71)}]
	incr c2 [expr {- (0x60 + ($c2 < 0xE0))}]
    } else {
	set c1 [expr {($c1 >> 1) + ($c1 < 0xDF ? 0x30 : 0x70)}]
	incr c2 -2
    }
    binary format cc $c1 $c2
}
proc channel-diff {fa fb} {
    set diff {}
    while {[gets $fa la] >= 0 && [gets $fb lb] >= 0} {
	if {[string compare $la $lb] == 0} continue
	# lappend diff $la $lb

	# For more readable (easy to analyze) output.
	set code [lindex $la 0]
	binary scan [lindex $la 1] H* expected
	binary scan [lindex $lb 1] H* got
	lappend diff [list $code $expected $got]
    }
    return $diff
}

# Create char tables.
cd [temporaryDirectory]
foreach enc {cp932 euc-jp iso2022-jp} {
    set f [open $enc.chars w]
    fconfigure $f -encoding binary
    foreach-jisx0208 code {
	puts $f [format "%04X %s" $code [gen-jisx0208-$enc $code]]
    }
    close $f
}
# shiftjis == cp932 for jisx0208.
file copy -force cp932.chars shiftjis.chars

set NUM 0
foreach from {cp932 shiftjis euc-jp iso2022-jp} {
    foreach to {cp932 shiftjis euc-jp iso2022-jp} {
	test encoding-25.[incr NUM] "jisx0208 $from => $to" -setup {
	    cd [temporaryDirectory]
	} -body {
	    set f [open $from.chars]
	    fconfigure $f -encoding $from
	    set out [open $from.$to.tcltestout w]
	    fconfigure $out -encoding $to
	    puts -nonewline $out [read $f]
	    close $out
	    close $f
	    # then compare $to.chars <=> $from.to.tcltestout as binary.
	    set fa [open $to.chars rb]
	    set fb [open $from.$to.tcltestout rb]
	    channel-diff $fa $fb
	    # Difference should be empty.
	} -cleanup {
	    close $fa
	    close $fb
	} -result {}
    }
}

test encoding-26.0 {Tcl_GetDefaultEncodingDir} -constraints {
    testgetdefenc
} -setup {
    set origDir [testgetdefenc]
    testsetdefenc slappy
} -body {
    testgetdefenc
} -cleanup {
    testsetdefenc $origDir
} -result slappy

file delete {*}[glob -directory [temporaryDirectory] *.chars *.tcltestout]
# ===> Cut here <===

# EscapeFreeProc, GetTableEncoding, unilen are fully tested by the rest of
# this file.


test encoding-27.1 {encoding dirs basic behavior} -returnCodes error -body {
    encoding dirs ? ?
} -result {wrong # args: should be "encoding dirs ?dirList?"}
test encoding-27.2 {encoding dirs basic behavior} -returnCodes error -body {
    encoding dirs "\{not a list"
} -result "expected directory list but got \"\{not a list\""

}


test encoding-28.0 {all encodings load} -body {
	set string hello
	foreach name [encoding names] {
		incr count
		encoding convertto $name $string

		# discard the cached internal representation of Tcl_Encoding
		# Unfortunately, without this, encoding 2-1 fails.
		llength $name
	}
	return $count
} -result 85

runtests

test encoding-bug-183a1adcc0-1 {Bug [183a1adcc0] Buffer overflow Tcl_UtfToExternal} -constraints {
    testencoding
} -body {
    # Note - buffers are initialized to \xff
    list [catch {testencoding Tcl_UtfToExternal unicode A {start end} {} 1} result] $result
} -result [list 0 [list nospace {} \xff]]

test encoding-bug-183a1adcc0-2 {Bug [183a1adcc0] Buffer overflow Tcl_UtfToExternal} -constraints {
    testencoding
} -body {
    # Note - buffers are initialized to \xff
    list [catch {testencoding Tcl_UtfToExternal unicode A {start end} {} 0} result] $result
} -result [list 0 [list nospace {} {}]]

test encoding-bug-183a1adcc0-3 {Bug [183a1adcc0] Buffer overflow Tcl_UtfToExternal} -constraints {
    testencoding
} -body {
    # Note - buffers are initialized to \xff
    list [catch {testencoding Tcl_UtfToExternal unicode A {start end} {} 2} result] $result
} -result [list 0 [list nospace {} \x00\x00]]

test encoding-bug-183a1adcc0-4 {Bug [183a1adcc0] Buffer overflow Tcl_UtfToExternal} -constraints {
    testencoding
} -body {
    # Note - buffers are initialized to \xff
    list [catch {testencoding Tcl_UtfToExternal unicode A {start end} {} 3} result] $result
} -result [list 0 [list nospace {} \x00\x00\xff]]

test encoding-bug-183a1adcc0-5 {Bug [183a1adcc0] Buffer overflow Tcl_UtfToExternal} -constraints {
    testencoding ucs2
} -body {
    # Note - buffers are initialized to \xff
    list [catch {testencoding Tcl_UtfToExternal unicode A {start end} {} 4} result] $result
} -result [list 0 [list ok {} [expr {$::tcl_platform(byteOrder) eq "littleEndian" ? "\x41\x00" : "\x00\x41"}]\x00\x00]]

}

# cleanup
namespace delete ::tcl::test::encoding
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# End: