Tcl Source Code

	     * Always check before using TclUtfToUCS4. Not doing can so
	     * cause it run beyond the end of the buffer! If we happen such an
	     * incomplete char its bytes are made to represent themselves
	     * unless the user has explicitly asked to be told.
	     */

	    if (flags & TCL_ENCODING_MODIFIED) {
		if (STOPONERROR) {
		    result = TCL_CONVERT_MULTIBYTE;
		    break;
		}
		ch = UCHAR(*src++);
	    } else {
		char chbuf[2];
		chbuf[0] = UCHAR(*src++); chbuf[1] = 0;

	if (!len) {
	    word = 0;
	} else
#endif
	    word = fromUnicode[(ch >> 8)][ch & 0xFF];

	if ((word == 0) && (ch != 0)) {
	    if (STOPONERROR) {
		result = TCL_CONVERT_UNKNOWN;
		break;
	    }
	    word = dataPtr->fallback;
	}
	if (prefixBytes[(word >> 8)] != 0) {
	    if (dst + 1 > dstEnd) {

    set f [open $path(test1) w]
    chan configure $f -encoding ascii -buffering line -translation crlf
    chan puts -nonewline $f "\n12"
    contents $path(test1)
} -cleanup {
    chan close $f
} -result "\r\n12"
test chan-io-3.4 {WriteChars: loop over stage buffer} -constraints deprecated -body {
    # stage buffer maps to more than can be queued at once.
    set f [open $path(test1) w]
    chan configure $f -encoding jis0208 -buffersize 16
    chan puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} -cleanup {
    catch {chan close $f}
} -result [list "!)!)!)!)!)!)!)!)" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test chan-io-3.5 {WriteChars: saved != 0} -constraints deprecated -body {
    # Bytes produced by UtfToExternal from end of last channel buffer had to
    # be moved to beginning of next channel buffer to preserve requested
    # buffersize.
    set f [open $path(test1) w]
    chan configure $f -encoding jis0208 -buffersize 17
    chan puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]

    chan puts -nonewline $f "12345678901234ＡＢ"
    set x [list [contents $path(test1)]]
    chan close $f
    lappend x [contents $path(test1)]
} -cleanup {
    catch {chan close $f}
} -result [list "12345678901234\x82\x60" "12345678901234\x82\x60\x82\x61"]
test chan-io-3.7 {WriteChars: (bufPtr->nextAdded > bufPtr->length)} -constraints deprecated -body {
    # When translating UTF-8 to external, the produced bytes went past end of
    # the channel buffer. This is done on purpose - we then truncate the bytes
    # at the end of the partial character to preserve the requested blocksize
    # on flush. The truncated bytes are moved to the beginning of the next
    # channel buffer.
    set f [open $path(test1) w]
    chan configure $f -encoding jis0208 -buffersize 17

    set f [open $path(test1) w]
    fconfigure $f -encoding ascii -buffering line -translation crlf
    puts -nonewline $f "\n12"
    set x [contents $path(test1)]
    close $f
    set x
} "\r\n12"
test io-3.4 {WriteChars: loop over stage buffer} -constraints deprecated -body {
    # stage buffer maps to more than can be queued at once.

    set f [open $path(test1) w]
    fconfigure $f -encoding jis0208 -buffersize 16
    puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} -cleanup {
    catch {close $f}
} -result [list "!)!)!)!)!)!)!)!)" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test io-3.5 {WriteChars: saved != 0} -constraints deprecated -body {
    # Bytes produced by UtfToExternal from end of last channel buffer
    # had to be moved to beginning of next channel buffer to preserve
    # requested buffersize.

    set f [open $path(test1) w]
    fconfigure $f -encoding jis0208 -buffersize 17
    puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"

    set f [open $path(test1) w]
    fconfigure $f -encoding shiftjis -buffersize 16
    puts -nonewline $f "12345678901234ＡＢ"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} [list "12345678901234\x82\x60" "12345678901234\x82\x60\x82\x61"]
test io-3.7 {WriteChars: (bufPtr->nextAdded > bufPtr->length)} -constraints deprecated -body {
    # When translating UTF-8 to external, the produced bytes went past end
    # of the channel buffer.  This is done purpose -- we then truncate the
    # bytes at the end of the partial character to preserve the requested
    # blocksize on flush.  The truncated bytes are moved to the beginning
    # of the next channel buffer.

    set f [open $path(test1) w]

    close $f
    set f [open $path(test1)]
    fconfigure $f -encoding utf-8 -buffersize 10
    set in [read $f]
    close $f
    scan [string index $in end] %c
} 160
test io-12.9 {ReadChars: multibyte chars split} -constraints deprecated -body {
    set f [open $path(test1) w]
    fconfigure $f -translation binary
    puts -nonewline $f [string repeat a 9]\xC2
    close $f
    set f [open $path(test1)]
    fconfigure $f -encoding utf-8 -buffersize 10
    set in [read $f]
    close $f
    scan [string index $in end] %c
} -cleanup {
    catch {close $f}
} -result 194
test io-12.10 {ReadChars: multibyte chars split} -constraints deprecated -body {
    set f [open $path(test1) w]
    fconfigure $f -translation binary
    puts -nonewline $f [string repeat a 9]\xC2
    close $f
    set f [open $path(test1)]
    fconfigure $f -encoding utf-8 -buffersize 11
    set in [read $f]