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-rw-r--r--generic/tclEncoding.c136
1 files changed, 131 insertions, 5 deletions
diff --git a/generic/tclEncoding.c b/generic/tclEncoding.c
index 23b2632..7552eb4 100644
--- a/generic/tclEncoding.c
+++ b/generic/tclEncoding.c
@@ -8,7 +8,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclEncoding.c,v 1.21 2004/05/05 18:28:39 davygrvy Exp $
+ * RCS: @(#) $Id: tclEncoding.c,v 1.22 2004/05/07 20:01:23 rmax Exp $
*/
#include "tclInt.h"
@@ -225,6 +225,16 @@ static int UtfToUtfProc _ANSI_ARGS_((ClientData clientData,
CONST char *src, int srcLen, int flags,
Tcl_EncodingState *statePtr, char *dst, int dstLen,
int *srcReadPtr, int *dstWrotePtr,
+ int *dstCharsPtr, int pureNullMode));
+static int UtfIntToUtfExtProc _ANSI_ARGS_((ClientData clientData,
+ CONST char *src, int srcLen, int flags,
+ Tcl_EncodingState *statePtr, char *dst, int dstLen,
+ int *srcReadPtr, int *dstWrotePtr,
+ int *dstCharsPtr));
+static int UtfExtToUtfIntProc _ANSI_ARGS_((ClientData clientData,
+ CONST char *src, int srcLen, int flags,
+ Tcl_EncodingState *statePtr, char *dst, int dstLen,
+ int *srcReadPtr, int *dstWrotePtr,
int *dstCharsPtr));
static int TclFindEncodings _ANSI_ARGS_((CONST char *argv0));
@@ -272,8 +282,8 @@ TclInitEncodingSubsystem()
systemEncoding = Tcl_GetEncoding(NULL, type.encodingName);
type.encodingName = "utf-8";
- type.toUtfProc = UtfToUtfProc;
- type.fromUtfProc = UtfToUtfProc;
+ type.toUtfProc = UtfExtToUtfIntProc;
+ type.fromUtfProc = UtfIntToUtfExtProc;
type.freeProc = NULL;
type.nullSize = 1;
type.clientData = NULL;
@@ -1775,6 +1785,105 @@ BinaryProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
return result;
}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * UtfExtToUtfIntProc --
+ *
+ * Convert from UTF-8 to UTF-8. While converting null-bytes from
+ * the Tcl's internal representation (0xc0, 0x80) to the official
+ * representation (0x00). See UtfToUtfProc for details.
+ *
+ * Results:
+ * Returns TCL_OK if conversion was successful.
+ *
+ * Side effects:
+ * None.
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+UtfIntToUtfExtProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
+ srcReadPtr, dstWrotePtr, dstCharsPtr)
+ ClientData clientData; /* Not used. */
+ CONST char *src; /* Source string in UTF-8. */
+ int srcLen; /* Source string length in bytes. */
+ int flags; /* Conversion control flags. */
+ Tcl_EncodingState *statePtr;/* Place for conversion routine to store
+ * state information used during a piecewise
+ * conversion. Contents of statePtr are
+ * initialized and/or reset by conversion
+ * routine under control of flags argument. */
+ char *dst; /* Output buffer in which converted string
+ * is stored. */
+ int dstLen; /* The maximum length of output buffer in
+ * bytes. */
+ int *srcReadPtr; /* Filled with the number of bytes from the
+ * source string that were converted. This
+ * may be less than the original source length
+ * if there was a problem converting some
+ * source characters. */
+ int *dstWrotePtr; /* Filled with the number of bytes that were
+ * stored in the output buffer as a result of
+ * the conversion. */
+ int *dstCharsPtr; /* Filled with the number of characters that
+ * correspond to the bytes stored in the
+ * output buffer. */
+{
+ return UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
+ srcReadPtr, dstWrotePtr, dstCharsPtr, 1);
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * UtfExtToUtfIntProc --
+ *
+ * Convert from UTF-8 to UTF-8 while converting null-bytes from
+ * the official representation (0x00) to Tcl's internal
+ * representation (0xc0, 0x80). See UtfToUtfProc for details.
+ *
+ * Results:
+ * Returns TCL_OK if conversion was successful.
+ *
+ * Side effects:
+ * None.
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+UtfExtToUtfIntProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
+ srcReadPtr, dstWrotePtr, dstCharsPtr)
+ ClientData clientData; /* Not used. */
+ CONST char *src; /* Source string in UTF-8. */
+ int srcLen; /* Source string length in bytes. */
+ int flags; /* Conversion control flags. */
+ Tcl_EncodingState *statePtr;/* Place for conversion routine to store
+ * state information used during a piecewise
+ * conversion. Contents of statePtr are
+ * initialized and/or reset by conversion
+ * routine under control of flags argument. */
+ char *dst; /* Output buffer in which converted string
+ * is stored. */
+ int dstLen; /* The maximum length of output buffer in
+ * bytes. */
+ int *srcReadPtr; /* Filled with the number of bytes from the
+ * source string that were converted. This
+ * may be less than the original source length
+ * if there was a problem converting some
+ * source characters. */
+ int *dstWrotePtr; /* Filled with the number of bytes that were
+ * stored in the output buffer as a result of
+ * the conversion. */
+ int *dstCharsPtr; /* Filled with the number of characters that
+ * correspond to the bytes stored in the
+ * output buffer. */
+{
+ return UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
+ srcReadPtr, dstWrotePtr, dstCharsPtr, 0);
+}
+
/*
*-------------------------------------------------------------------------
*
@@ -1795,7 +1904,7 @@ BinaryProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
static int
UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
- srcReadPtr, dstWrotePtr, dstCharsPtr)
+ srcReadPtr, dstWrotePtr, dstCharsPtr, pureNullMode)
ClientData clientData; /* Not used. */
CONST char *src; /* Source string in UTF-8. */
int srcLen; /* Source string length in bytes. */
@@ -1820,6 +1929,10 @@ UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
int *dstCharsPtr; /* Filled with the number of characters that
* correspond to the bytes stored in the
* output buffer. */
+ int pureNullMode; /* Convert embedded nulls from
+ * internal representation to real
+ * null-bytes or vice versa */
+
{
CONST char *srcStart, *srcEnd, *srcClose;
char *dstStart, *dstEnd;
@@ -1852,8 +1965,21 @@ UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
result = TCL_CONVERT_NOSPACE;
break;
}
- if (UCHAR(*src) < 0x80) {
+ if (UCHAR(*src) < 0x80 &&
+ !(UCHAR(*src) == 0 && pureNullMode == 0)) {
+ /*
+ * Copy 7bit chatacters, but skip null-bytes when we are
+ * in input mode, so that they get converted to 0xc080.
+ */
*dst++ = *src++;
+ } else if (pureNullMode == 1 &&
+ UCHAR(*src) == 0xc0 &&
+ UCHAR(*(src+1)) == 0x80) {
+ /*
+ * Convert 0xc080 to real nulls when we are in output mode.
+ */
+ *dst++ = 0;
+ src += 2;
} else {
src += Tcl_UtfToUniChar(src, &ch);
dst += Tcl_UniCharToUtf(ch, dst);