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Overview
Comment:merge core-8-branch. Also add range checks to Tcl_GetUniChar() and Tcl_Range(), as suggested by Don Porter.
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Timelines: family | ancestors | descendants | both | tip-389
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SHA3-256:c33b158bd610c59c54ee9a0b83fb27c9ff4e20b5997937d4c066f337cdf05378
User & Date: jan.nijtmans 2018-01-26 16:20:29
Context
2018-03-15
14:37
merge 8.7 check-in: d1e80d709a user: dgp tags: tip-389
2018-01-26
16:20
merge core-8-branch. Also add range checks to Tcl_GetUniChar() and Tcl_Range(), as suggested by Don ... check-in: c33b158bd6 user: jan.nijtmans tags: tip-389
2018-01-25
21:35
test suite debugging check-in: b1f83268a5 user: dgp tags: core-8-branch
2018-01-23
15:51
merge core-8-branch check-in: ca785e4341 user: jan.nijtmans tags: tip-389
Changes
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Changes to doc/StringObj.3.

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\fIlengthPtr\fR if it is non-NULL.  The storage referenced by the returned
byte pointer is owned by the value manager and should not be modified by
the caller.  The procedure \fBTcl_GetUnicode\fR is used in the common case
where the caller does not need the length of the unicode string
representation.
.PP
\fBTcl_GetUniChar\fR returns the \fIindex\fR'th character in the
value's Unicode representation.

.PP
\fBTcl_GetRange\fR returns a newly created value comprised of the
characters between \fIfirst\fR and \fIlast\fR (inclusive) in the
value's Unicode representation.  If the value's Unicode
representation is invalid, the Unicode representation is regenerated
from the value's string representation.
.PP







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\fIlengthPtr\fR if it is non-NULL.  The storage referenced by the returned
byte pointer is owned by the value manager and should not be modified by
the caller.  The procedure \fBTcl_GetUnicode\fR is used in the common case
where the caller does not need the length of the unicode string
representation.
.PP
\fBTcl_GetUniChar\fR returns the \fIindex\fR'th character in the
value's Unicode representation. If the index is out of range or
it references a low surrogate preceded by a high surrogate, it returns -1;
.PP
\fBTcl_GetRange\fR returns a newly created value comprised of the
characters between \fIfirst\fR and \fIlast\fR (inclusive) in the
value's Unicode representation.  If the value's Unicode
representation is invalid, the Unicode representation is regenerated
from the value's string representation.
.PP

Changes to doc/format.n.

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number if the first character is not a sign.
.TP 10
\fB0\fR
Specifies that the number should be padded on the left with
zeroes instead of spaces.
.TP 10
\fB#\fR
Requests an alternate output form. For \fBo\fR and \fBO\fR
conversions it guarantees that the first digit is always \fB0\fR.
For \fBx\fR or \fBX\fR conversions, \fB0x\fR or \fB0X\fR (respectively)
will be added to the beginning of the result unless it is zero.
For \fBb\fR conversions, \fB0b\fR
will be added to the beginning of the result unless it is zero.
For \fBd\fR conversions, \fB0d\fR will be added to the beginning
of the result unless it is zero.
................................................................................
Convert integer to unsigned hexadecimal string, using digits
.QW 0123456789abcdef
for \fBx\fR and
.QW 0123456789ABCDEF
for \fBX\fR).
.TP 10
\fBb\fR
Convert integer to binary string, using digits 0 and 1.
.TP 10
\fBc\fR
Convert integer to the Unicode character it represents.
.TP 10
\fBs\fR
No conversion; just insert string.
.TP 10







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number if the first character is not a sign.
.TP 10
\fB0\fR
Specifies that the number should be padded on the left with
zeroes instead of spaces.
.TP 10
\fB#\fR
Requests an alternate output form. For \fBo\fR
conversions it guarantees that the first digit is always \fB0\fR.
For \fBx\fR or \fBX\fR conversions, \fB0x\fR or \fB0X\fR (respectively)
will be added to the beginning of the result unless it is zero.
For \fBb\fR conversions, \fB0b\fR
will be added to the beginning of the result unless it is zero.
For \fBd\fR conversions, \fB0d\fR will be added to the beginning
of the result unless it is zero.
................................................................................
Convert integer to unsigned hexadecimal string, using digits
.QW 0123456789abcdef
for \fBx\fR and
.QW 0123456789ABCDEF
for \fBX\fR).
.TP 10
\fBb\fR
Convert integer to unsigned binary string, using digits 0 and 1.
.TP 10
\fBc\fR
Convert integer to the Unicode character it represents.
.TP 10
\fBs\fR
No conversion; just insert string.
.TP 10

Changes to generic/tclStringObj.c.

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}
 
/*
 *----------------------------------------------------------------------
 *
 * Tcl_GetUniChar --
 *
 *	Get the index'th Unicode character from the String object. The index
 *	is assumed to be in the appropriate range. If index references a lower
 *	surrogate preceded by a higher surrogate, the result = -1;
 *
 * Results:
 *	Returns the index'th Unicode character in the Object.
 *
 * Side effects:
 *	Fills unichar with the index'th Unicode character.
 *
................................................................................
int
Tcl_GetUniChar(
    Tcl_Obj *objPtr,		/* The object to get the Unicode charater
				 * from. */
    int index)			/* Get the index'th Unicode character. */
{
    String *stringPtr;
    int ch;





    /*
     * Optimize the case where we're really dealing with a bytearray object
     * without string representation; we don't need to convert to a string to
     * perform the indexing operation.
     */

    if (TclIsPureByteArray(objPtr)) {
	unsigned char *bytes = Tcl_GetByteArrayFromObj(objPtr, NULL);




	return (int) bytes[index];
    }

    /*
     * OK, need to work with the object as a string.
     */
................................................................................
	if (stringPtr->numChars == objPtr->length) {
	    return (Tcl_UniChar) objPtr->bytes[index];
	}
	FillUnicodeRep(objPtr);
	stringPtr = GET_STRING(objPtr);
    }




	ch = stringPtr->unicode[index];
#if TCL_UTF_MAX == 4
	/* See: bug [11ae2be95dac9417] */
	if ((ch&0xF800) == 0xD800) {
	    if (ch&0x400) {
		if ((index > 0) && ((stringPtr->unicode[index-1]&0xFC00) == 0xD800)) {
		    ch = -1; /* low surrogate preceded by high surrogate */
................................................................................
Tcl_GetRange(
    Tcl_Obj *objPtr,		/* The Tcl object to find the range of. */
    int first,			/* First index of the range. */
    int last)			/* Last index of the range. */
{
    Tcl_Obj *newObjPtr;		/* The Tcl object to find the range of. */
    String *stringPtr;





    /*
     * Optimize the case where we're really dealing with a bytearray object
     * without string representation; we don't need to convert to a string to
     * perform the substring operation.
     */

    if (TclIsPureByteArray(objPtr)) {
	unsigned char *bytes = Tcl_GetByteArrayFromObj(objPtr, NULL);






	return Tcl_NewByteArrayObj(bytes+first, last-first+1);
    }

    /*
     * OK, need to work with the object as a string.
     */

................................................................................
	 * If numChars is unknown, compute it.
	 */

	if (stringPtr->numChars == -1) {
	    TclNumUtfChars(stringPtr->numChars, objPtr->bytes, objPtr->length);
	}
	if (stringPtr->numChars == objPtr->length) {






	    newObjPtr = Tcl_NewStringObj(objPtr->bytes + first, last-first+1);

	    /*
	     * Since we know the char length of the result, store it.
	     */

	    SetStringFromAny(NULL, newObjPtr);
................................................................................
	    stringPtr = GET_STRING(newObjPtr);
	    stringPtr->numChars = newObjPtr->length;
	    return newObjPtr;
	}
	FillUnicodeRep(objPtr);
	stringPtr = GET_STRING(objPtr);
    }






#if TCL_UTF_MAX == 4
	/* See: bug [11ae2be95dac9417] */
	if ((first>0) && ((stringPtr->unicode[first]&0xFC00) == 0xDC00)
		&& ((stringPtr->unicode[first-1]&0xFC00) == 0xD800)) {
	    ++first;
	}
	if ((last+1<stringPtr->numChars) && ((stringPtr->unicode[last+1]&0xFC00) == 0xDC00)







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}
 
/*
 *----------------------------------------------------------------------
 *
 * Tcl_GetUniChar --
 *
 *	Get the index'th Unicode character from the String object. If index
 *	is out of range or it references a low surrogate preceded by a high
 *	surrogate, the result = -1;
 *
 * Results:
 *	Returns the index'th Unicode character in the Object.
 *
 * Side effects:
 *	Fills unichar with the index'th Unicode character.
 *
................................................................................
int
Tcl_GetUniChar(
    Tcl_Obj *objPtr,		/* The object to get the Unicode charater
				 * from. */
    int index)			/* Get the index'th Unicode character. */
{
    String *stringPtr;
    int ch, length;

    if (index < 0) {
	return -1;
    }

    /*
     * Optimize the case where we're really dealing with a bytearray object
     * without string representation; we don't need to convert to a string to
     * perform the indexing operation.
     */

    if (TclIsPureByteArray(objPtr)) {
	unsigned char *bytes = Tcl_GetByteArrayFromObj(objPtr, &length);
	if (index >- length) {
		return -1;
	}

	return (int) bytes[index];
    }

    /*
     * OK, need to work with the object as a string.
     */
................................................................................
	if (stringPtr->numChars == objPtr->length) {
	    return (Tcl_UniChar) objPtr->bytes[index];
	}
	FillUnicodeRep(objPtr);
	stringPtr = GET_STRING(objPtr);
    }

    if (index >= stringPtr->numChars) {
	return -1;
    }
	ch = stringPtr->unicode[index];
#if TCL_UTF_MAX == 4
	/* See: bug [11ae2be95dac9417] */
	if ((ch&0xF800) == 0xD800) {
	    if (ch&0x400) {
		if ((index > 0) && ((stringPtr->unicode[index-1]&0xFC00) == 0xD800)) {
		    ch = -1; /* low surrogate preceded by high surrogate */
................................................................................
Tcl_GetRange(
    Tcl_Obj *objPtr,		/* The Tcl object to find the range of. */
    int first,			/* First index of the range. */
    int last)			/* Last index of the range. */
{
    Tcl_Obj *newObjPtr;		/* The Tcl object to find the range of. */
    String *stringPtr;
    int length;

    if (first < 0) {
	first = 0;
	}
    /*
     * Optimize the case where we're really dealing with a bytearray object
     * without string representation; we don't need to convert to a string to
     * perform the substring operation.
     */

    if (TclIsPureByteArray(objPtr)) {
	unsigned char *bytes = Tcl_GetByteArrayFromObj(objPtr, &length);
	if (last >= length) {
	    last = length - 1;
	}
	if (last < first) {
	    return Tcl_NewObj();
	}
	return Tcl_NewByteArrayObj(bytes+first, last-first+1);
    }

    /*
     * OK, need to work with the object as a string.
     */

................................................................................
	 * If numChars is unknown, compute it.
	 */

	if (stringPtr->numChars == -1) {
	    TclNumUtfChars(stringPtr->numChars, objPtr->bytes, objPtr->length);
	}
	if (stringPtr->numChars == objPtr->length) {
	    if (last >= stringPtr->numChars) {
		last = stringPtr->numChars - 1;
	    }
	    if (last < first) {
		return Tcl_NewObj();
	    }
	    newObjPtr = Tcl_NewStringObj(objPtr->bytes + first, last-first+1);

	    /*
	     * Since we know the char length of the result, store it.
	     */

	    SetStringFromAny(NULL, newObjPtr);
................................................................................
	    stringPtr = GET_STRING(newObjPtr);
	    stringPtr->numChars = newObjPtr->length;
	    return newObjPtr;
	}
	FillUnicodeRep(objPtr);
	stringPtr = GET_STRING(objPtr);
    }
	if (last > stringPtr->numChars) {
	    last = stringPtr->numChars;
	}
	if (last < first) {
	    return Tcl_NewObj();
	}
#if TCL_UTF_MAX == 4
	/* See: bug [11ae2be95dac9417] */
	if ((first>0) && ((stringPtr->unicode[first]&0xFC00) == 0xDC00)
		&& ((stringPtr->unicode[first-1]&0xFC00) == 0xD800)) {
	    ++first;
	}
	if ((last+1<stringPtr->numChars) && ((stringPtr->unicode[last+1]&0xFC00) == 0xDC00)

Changes to tests/chanio.test.

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    chan event $f readable {script 2}
    chan event $f readable {}
    list [testfevent cmd "chan event $f readable"] [chan event $f readable]
} -constraints {testfevent fileevent} -cleanup {
    testfevent delete
    chan close $f
} -result {{script 1} {}}



set path(bar) [makeFile {} bar]

test chan-io-48.1 {testing readability conditions} {fileevent} {
    set f [open $path(bar) w]
    chan puts $f abcdefg
    chan puts $f abcdefg
................................................................................
    chan puts $f {copy_slowly $f}
    chan puts $f {exit}
    vwait [namespace which -variable x]
    list $x $l
} -cleanup {
    chan close $f
} -result {done {0 1 0 1 0 1 0 1 0 1 0 1 0 0}}



test chan-io-48.4 {lf write, testing readability, ^Z termination, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
................................................................................
    # -translation binary is also -encoding binary
    chan configure $in  -translation binary
    chan configure $out -encoding koi8-r -translation lf
    chan copy $in $out
    chan close $in
    chan close $out
    file size $path(kyrillic.txt)
} -cleanup {
    file delete $path(utf8-fcopy.txt)
} -result 3

test chan-io-53.1 {CopyData} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]







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    chan event $f readable {script 2}
    chan event $f readable {}
    list [testfevent cmd "chan event $f readable"] [chan event $f readable]
} -constraints {testfevent fileevent} -cleanup {
    testfevent delete
    chan close $f
} -result {{script 1} {}}
unset path(foo)
removeFile foo

set path(bar) [makeFile {} bar]

test chan-io-48.1 {testing readability conditions} {fileevent} {
    set f [open $path(bar) w]
    chan puts $f abcdefg
    chan puts $f abcdefg
................................................................................
    chan puts $f {copy_slowly $f}
    chan puts $f {exit}
    vwait [namespace which -variable x]
    list $x $l
} -cleanup {
    chan close $f
} -result {done {0 1 0 1 0 1 0 1 0 1 0 1 0 0}}
unset path(bar)
removeFile bar 

test chan-io-48.4 {lf write, testing readability, ^Z termination, auto read mode} -setup {
    file delete $path(test1)
    set c 0
    set l ""
} -constraints {fileevent} -body {
    set f [open $path(test1) w]
    chan configure $f -translation lf
................................................................................
    # -translation binary is also -encoding binary
    chan configure $in  -translation binary
    chan configure $out -encoding koi8-r -translation lf
    chan copy $in $out
    chan close $in
    chan close $out
    file size $path(kyrillic.txt)


} -result 3

test chan-io-53.1 {CopyData} -setup {
    file delete $path(test1)
} -constraints {fcopy} -body {
    set f1 [open $thisScript]
    set f2 [open $path(test1) w]

Changes to tests/exec.test.

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    exec [interpreter] $path(sh) -c "\"$path(echo)\" foo bar 1>&2" \
	|& [interpreter] $path(sh) -c "\"$path(echo)\" second msg 1>&2 ; \"$path(cat)\"" |& [interpreter] $path(cat)
} "second msg\nfoo bar"

# I/O redirection: combinations.

set path(gorp.file2) [makeFile {} gorp.file2]
file delete $path(gorp.file2)

test exec-7.1 {multiple I/O redirections} {exec} {
    exec << "command input" > $path(gorp.file2) [interpreter] $path(cat) < $path(gorp.file)
    exec [interpreter] $path(cat) $path(gorp.file2)
} {Just a few thoughts}
test exec-7.2 {multiple I/O redirections} {exec} {
    exec < $path(gorp.file) << "command input" [interpreter] $path(cat)







<







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    exec [interpreter] $path(sh) -c "\"$path(echo)\" foo bar 1>&2" \
	|& [interpreter] $path(sh) -c "\"$path(echo)\" second msg 1>&2 ; \"$path(cat)\"" |& [interpreter] $path(cat)
} "second msg\nfoo bar"

# I/O redirection: combinations.

set path(gorp.file2) [makeFile {} gorp.file2]


test exec-7.1 {multiple I/O redirections} {exec} {
    exec << "command input" > $path(gorp.file2) [interpreter] $path(cat) < $path(gorp.file)
    exec [interpreter] $path(cat) $path(gorp.file2)
} {Just a few thoughts}
test exec-7.2 {multiple I/O redirections} {exec} {
    exec < $path(gorp.file) << "command input" [interpreter] $path(cat)

Changes to tests/info.test.

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} -cleanup {
    namespace delete foo
} -result {type source line 2389 file info.test cmd {info frame 0} proc ::foo::bar level 0}

# -------------------------------------------------------------------------
unset -nocomplain res

test info-39.0 {Bug 4b61afd660} -setup {
    proc probe {} {
	return [dict get [info frame -1] line]
    }
    set body {
	set cmd probe
	$cmd
    }







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} -cleanup {
    namespace delete foo
} -result {type source line 2389 file info.test cmd {info frame 0} proc ::foo::bar level 0}

# -------------------------------------------------------------------------
unset -nocomplain res

test info-39.2 {Bug 4b61afd660} -setup {
    proc probe {} {
	return [dict get [info frame -1] line]
    }
    set body {
	set cmd probe
	$cmd
    }

Changes to tests/io.test.

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    fileevent $f readable {}
    set x [list [testfevent cmd "fileevent $f readable"] \
                [fileevent $f readable]]
    testfevent delete
    close $f
    set x
} {{script 1} {}}



set path(bar) [makeFile {} bar]

test io-48.1 {testing readability conditions} {fileevent} {
    set f [open $path(bar) w]
    puts $f abcdefg
    puts $f abcdefg
................................................................................
    puts $f "set f \[[list open $path(bar) r]]"
    puts $f {copy_slowly $f}
    puts $f {exit}
    vwait [namespace which -variable x]
    close $f
    list $x $l
} {done {0 1 0 1 0 1 0 1 0 1 0 1 0 0}}



test io-48.4 {lf write, testing readability, ^Z termination, auto read mode} {fileevent} {
    file delete $path(test1)
    set f [open $path(test1) w]
    fconfigure $f -translation lf
    variable c [format "abc\ndef\n%c" 26]
    puts -nonewline $f $c
    close $f







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    fileevent $f readable {}
    set x [list [testfevent cmd "fileevent $f readable"] \
                [fileevent $f readable]]
    testfevent delete
    close $f
    set x
} {{script 1} {}}
unset path(foo)
removeFile foo

set path(bar) [makeFile {} bar]

test io-48.1 {testing readability conditions} {fileevent} {
    set f [open $path(bar) w]
    puts $f abcdefg
    puts $f abcdefg
................................................................................
    puts $f "set f \[[list open $path(bar) r]]"
    puts $f {copy_slowly $f}
    puts $f {exit}
    vwait [namespace which -variable x]
    close $f
    list $x $l
} {done {0 1 0 1 0 1 0 1 0 1 0 1 0 0}}
unset path(bar)
removeFile bar

test io-48.4 {lf write, testing readability, ^Z termination, auto read mode} {fileevent} {
    file delete $path(test1)
    set f [open $path(test1) w]
    fconfigure $f -translation lf
    variable c [format "abc\ndef\n%c" 26]
    puts -nonewline $f $c
    close $f

Changes to tests/ioCmd.test.

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test iocmd-10.5 {fblocked command} {
    fblocked stdin
} 0

set path(test4) [makeFile {} test4]
set path(test5) [makeFile {} test5]

file delete $path(test5)
test iocmd-11.1 {I/O to command pipelines} {unixOrPc unixExecs} {
    set f [open $path(test4) w]
    close $f
    list [catch {open "| cat < \"$path(test4)\" > \"$path(test5)\"" w} msg] $msg $::errorCode
} {1 {can't write input to command: standard input was redirected} {TCL OPERATION EXEC BADREDIRECT}}
test iocmd-11.2 {I/O to command pipelines} {unixOrPc unixExecs} {
    list [catch {open "| echo > \"$path(test5)\"" r} msg] $msg $::errorCode
................................................................................
rename track {}
# cleanup
foreach file [list test1 test2 test3 test4] {
    removeFile $file
}
# delay long enough for background processes to finish
after 500
foreach file [list test5] {
    removeFile $file
}
cleanupTests
return







<







 







<
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test iocmd-10.5 {fblocked command} {
    fblocked stdin
} 0

set path(test4) [makeFile {} test4]
set path(test5) [makeFile {} test5]


test iocmd-11.1 {I/O to command pipelines} {unixOrPc unixExecs} {
    set f [open $path(test4) w]
    close $f
    list [catch {open "| cat < \"$path(test4)\" > \"$path(test5)\"" w} msg] $msg $::errorCode
} {1 {can't write input to command: standard input was redirected} {TCL OPERATION EXEC BADREDIRECT}}
test iocmd-11.2 {I/O to command pipelines} {unixOrPc unixExecs} {
    list [catch {open "| echo > \"$path(test5)\"" r} msg] $msg $::errorCode
................................................................................
rename track {}
# cleanup
foreach file [list test1 test2 test3 test4] {
    removeFile $file
}
# delay long enough for background processes to finish
after 500

removeFile test5

cleanupTests
return