diff options
Diffstat (limited to 'generic/tclEncoding.c')
| -rw-r--r-- | generic/tclEncoding.c | 51 |
1 files changed, 33 insertions, 18 deletions
diff --git a/generic/tclEncoding.c b/generic/tclEncoding.c index 6fd4503..72b6ee3 100644 --- a/generic/tclEncoding.c +++ b/generic/tclEncoding.c @@ -510,9 +510,11 @@ FillEncodingFileMap(void) *--------------------------------------------------------------------------- */ -/* Those flags must not conflict with other TCL_ENCODING_* flags in tcl.h */ +/* This flags must not conflict with other TCL_ENCODING_* flags in tcl.h */ #define TCL_ENCODING_MODIFIED 0x20 /* Converting NULL bytes to 0xC0 0x80 */ -#define TCL_ENCODING_LE 0x80 /* Little-endian encoding, for ucs-2/utf-16 only */ +/* Since TCL_ENCODING_MODIFIED is only used for utf-8 and + * TCL_ENCODING_LE is only used for utf-16/ucs-2, re-use the same value */ +#define TCL_ENCODING_LE TCL_ENCODING_MODIFIED /* Little-endian encoding */ void TclInitEncodingSubsystem(void) @@ -522,7 +524,7 @@ TclInitEncodingSubsystem(void) unsigned size; unsigned short i; union { - unsigned char c; + char c; short s; } isLe; @@ -1137,20 +1139,22 @@ Tcl_ExternalToUtfDString( srcLen = encodingPtr->lengthProc(src); } - flags = TCL_ENCODING_START | TCL_ENCODING_END | TCL_ENCODING_MODIFIED; + flags = TCL_ENCODING_START | TCL_ENCODING_END; + if (encodingPtr->toUtfProc == UtfToUtfProc) { + flags |= TCL_ENCODING_MODIFIED; + } while (1) { result = encodingPtr->toUtfProc(encodingPtr->clientData, src, srcLen, flags, &state, dst, dstLen, &srcRead, &dstWrote, &dstChars); soFar = dst + dstWrote - Tcl_DStringValue(dstPtr); + src += srcRead; if (result != TCL_CONVERT_NOSPACE) { Tcl_DStringSetLength(dstPtr, soFar); return Tcl_DStringValue(dstPtr); } - flags &= ~TCL_ENCODING_START; - src += srcRead; srcLen -= srcRead; if (Tcl_DStringLength(dstPtr) == 0) { Tcl_DStringSetLength(dstPtr, dstLen); @@ -1253,12 +1257,14 @@ Tcl_ExternalToUtf( dstLen--; } - flags |= TCL_ENCODING_MODIFIED; + if (encodingPtr->toUtfProc == UtfToUtfProc) { + flags |= TCL_ENCODING_MODIFIED; + } do { Tcl_EncodingState savedState = *statePtr; result = encodingPtr->toUtfProc(encodingPtr->clientData, src, srcLen, - flags , statePtr, dst, dstLen, srcReadPtr, dstWrotePtr, + flags, statePtr, dst, dstLen, srcReadPtr, dstWrotePtr, dstCharsPtr); if (*dstCharsPtr <= maxChars) { break; @@ -2169,7 +2175,7 @@ BinaryProc( static int UtfToUtfProc( - TCL_UNUSED(ClientData), + ClientData clientData, /* additional flags, e.g. TCL_ENCODING_MODIFIED */ const char *src, /* Source string in UTF-8. */ int srcLen, /* Source string length in bytes. */ int flags, /* Conversion control flags. */ @@ -2208,6 +2214,7 @@ UtfToUtfProc( } dstStart = dst; + flags |= PTR2INT(clientData); dstEnd = dst + dstLen - TCL_UTF_MAX; for (numChars = 0; src < srcEnd && numChars <= charLimit; numChars++) { @@ -2247,16 +2254,23 @@ UtfToUtfProc( * unless the user has explicitly asked to be told. */ - if (flags & TCL_ENCODING_STOPONERROR) { - result = TCL_CONVERT_MULTIBYTE; - break; + if (flags & TCL_ENCODING_MODIFIED) { + if (flags & TCL_ENCODING_STOPONERROR) { + result = TCL_CONVERT_MULTIBYTE; + break; + } + ch = UCHAR(*src++); + } else { + char chbuf[2]; + chbuf[0] = UCHAR(*src++); chbuf[1] = 0; + TclUtfToUCS4(chbuf, &ch); } - ch = UCHAR(*src); - src += 1; dst += Tcl_UniCharToUtf(ch, dst); } else { + int low; size_t len = TclUtfToUCS4(src, &ch); - if ((len < 2) && (ch != 0) && (flags & TCL_ENCODING_STOPONERROR)) { + if ((len < 2) && (ch != 0) && (flags & TCL_ENCODING_STOPONERROR) + && (flags & TCL_ENCODING_MODIFIED)) { result = TCL_CONVERT_SYNTAX; break; } @@ -2266,7 +2280,7 @@ UtfToUtfProc( * A surrogate character is detected, handle especially. */ - int low = ch; + low = ch; len = (src <= srcEnd-3) ? TclUtfToUCS4(src, &low) : 0; if (((low & ~0x3FF) != 0xDC00) || (ch & 0x400)) { @@ -2413,7 +2427,7 @@ Utf16ToUtfProc( static int UtfToUtf16Proc( - ClientData clientData, /* != NULL means LE, == NUL means BE */ + ClientData clientData, /* additional flags, e.g. TCL_ENCODING_LE */ const char *src, /* Source string in UTF-8. */ int srcLen, /* Source string length in bytes. */ int flags, /* Conversion control flags. */ @@ -2447,6 +2461,7 @@ UtfToUtf16Proc( dstStart = dst; dstEnd = dst + dstLen - sizeof(Tcl_UniChar); + flags |= PTR2INT(clientData); result = TCL_OK; for (numChars = 0; src < srcEnd; numChars++) { @@ -2464,7 +2479,7 @@ UtfToUtf16Proc( break; } src += TclUtfToUCS4(src, &ch); - if (clientData) { + if (flags & TCL_ENCODING_LE) { if (ch <= 0xFFFF) { *dst++ = (ch & 0xFF); *dst++ = (ch >> 8); |