diff options
Diffstat (limited to 'unix/tkUnixSelect.c')
| -rw-r--r-- | unix/tkUnixSelect.c | 161 |
1 files changed, 120 insertions, 41 deletions
diff --git a/unix/tkUnixSelect.c b/unix/tkUnixSelect.c index bffce13..1f45db2 100644 --- a/unix/tkUnixSelect.c +++ b/unix/tkUnixSelect.c @@ -9,7 +9,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkUnixSelect.c,v 1.9 2002/08/05 04:30:41 dgp Exp $ + * RCS: @(#) $Id: tkUnixSelect.c,v 1.10 2002/09/30 13:42:26 dkf Exp $ */ #include "tkInt.h" @@ -246,15 +246,10 @@ TkSelPropProc(eventPtr) register XEvent *eventPtr; /* X PropertyChange event. */ { register IncrInfo *incrPtr; - int i, length, numItems, flags; - Tcl_Encoding encoding; - int srcLen, dstLen, result, srcRead, dstWrote, soFar; - Tcl_DString ds; - char *src, *dst; - Atom target, formatType; register TkSelHandler *selPtr; + int i, length, numItems; + Atom target, formatType; long buffer[TK_SEL_WORDS_AT_ONCE]; - char *propPtr; TkDisplay *dispPtr = TkGetDisplay(eventPtr->xany.display); Tk_ErrorHandler errorHandler; ThreadSpecificData *tsdPtr = (ThreadSpecificData *) @@ -361,24 +356,31 @@ TkSelPropProc(eventPtr) } ((char *) buffer)[numItems] = 0; + errorHandler = Tk_CreateErrorHandler(eventPtr->xproperty.display, + -1, -1, -1, (int (*)()) NULL, (ClientData) NULL); /* * Encode the data using the proper format for each type. */ if ((formatType == XA_STRING) - || (dispPtr - && (formatType == dispPtr->compoundTextAtom))) { + || (dispPtr && formatType==dispPtr->compoundTextAtom)) { + Tcl_DString ds; + int encodingCvtFlags; + int srcLen, dstLen, result, srcRead, dstWrote, soFar; + char *src, *dst; + Tcl_Encoding encoding; + /* * Set up the encoding state based on the format and whether * this is the first and/or last chunk. */ - flags = 0; + encodingCvtFlags = 0; if (incrPtr->converts[i].offset == 0) { - flags |= TCL_ENCODING_START; + encodingCvtFlags |= TCL_ENCODING_START; } if (numItems < TK_SEL_BYTES_AT_ONCE) { - flags |= TCL_ENCODING_END; + encodingCvtFlags |= TCL_ENCODING_END; } if (formatType == XA_STRING) { encoding = Tcl_GetEncoding(NULL, "iso8859-1"); @@ -404,11 +406,11 @@ TkSelPropProc(eventPtr) while (1) { result = Tcl_UtfToExternal(NULL, encoding, - src, srcLen, flags, + src, srcLen, encodingCvtFlags, &incrPtr->converts[i].state, dst, dstLen, &srcRead, &dstWrote, NULL); soFar = dst + dstWrote - Tcl_DStringValue(&ds); - flags &= ~TCL_ENCODING_START; + encodingCvtFlags &= ~TCL_ENCODING_START; src += srcRead; srcLen -= srcRead; if (result != TCL_CONVERT_NOSPACE) { @@ -418,8 +420,7 @@ TkSelPropProc(eventPtr) if (Tcl_DStringLength(&ds) == 0) { Tcl_DStringSetLength(&ds, dstLen); } - Tcl_DStringSetLength(&ds, - 2 * Tcl_DStringLength(&ds) + 1); + Tcl_DStringSetLength(&ds, 2 * Tcl_DStringLength(&ds) + 1); dst = Tcl_DStringValue(&ds) + soFar; dstLen = Tcl_DStringLength(&ds) - soFar - 1; } @@ -433,16 +434,11 @@ TkSelPropProc(eventPtr) * Set the property to the encoded string value. */ - errorHandler = Tk_CreateErrorHandler( - eventPtr->xproperty.display, -1, -1, -1, - (int (*)()) NULL, (ClientData) NULL); XChangeProperty(eventPtr->xproperty.display, - eventPtr->xproperty.window, - eventPtr->xproperty.atom, formatType, 8, - PropModeReplace, + eventPtr->xproperty.window, eventPtr->xproperty.atom, + formatType, 8, PropModeReplace, (unsigned char *) Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)); - Tk_DeleteErrorHandler(errorHandler); /* * Preserve any left-over bytes. @@ -453,27 +449,59 @@ TkSelPropProc(eventPtr) } memcpy(incrPtr->converts[i].buffer, src, (size_t) srcLen+1); Tcl_DStringFree(&ds); - } else { - propPtr = (char *) SelCvtToX((char *) buffer, - formatType, (Tk_Window) incrPtr->winPtr, - &numItems); + } else if (dispPtr && formatType==dispPtr->utf8Atom) { + /* + * Detect if the last character was a complete UTF-8 + * character; if not, it is not a good idea to send it + * to the remote end as there's no telling whether the + * other side will be able to digest partial + * characters. + * + * Note that utfLength is calculated and then potentially + * recalculated... + */ + CONST char *utfBuffer = (CONST char *) buffer; + CONST char *lastChar = + Tcl_UtfPrev(utfBuffer+numItems, utfBuffer); + int utfLength = lastChar-utfBuffer; + + if (numItems-utfLength > TCL_UTF_MAX) { + panic("Tcl_UtfPrev scanned backward over more than one character"); + } + if (!Tcl_UtfCharComplete(lastChar, numItems-utfLength)) { + /* + * numItems must not be reduced, so we need to set + * the length of the bits we want to subtract off + * it here. Horrid! + */ + length = numItems - utfLength; + } else { + /* + * We want to shovel all the data we've got across + */ + utfLength = numItems; + } + XChangeProperty(eventPtr->xproperty.display, + eventPtr->xproperty.window, eventPtr->xproperty.atom, + formatType, 8, PropModeReplace, + (unsigned char *) utfBuffer, utfLength); + } else { /* * Set the property to the encoded string value. */ - errorHandler = Tk_CreateErrorHandler( - eventPtr->xproperty.display, -1, -1, -1, - (int (*)()) NULL, (ClientData) NULL); - XChangeProperty(eventPtr->xproperty.display, - eventPtr->xproperty.window, - eventPtr->xproperty.atom, formatType, 8, - PropModeReplace, - (unsigned char *) Tcl_DStringValue(&ds), numItems); - Tk_DeleteErrorHandler(errorHandler); + char *propPtr = (char *) SelCvtToX((char *) buffer, + formatType, (Tk_Window) incrPtr->winPtr, + &numItems); + XChangeProperty(eventPtr->xproperty.display, + eventPtr->xproperty.window, eventPtr->xproperty.atom, + formatType, 32, PropModeReplace, + (unsigned char *) propPtr, numItems); ckfree(propPtr); } + Tk_DeleteErrorHandler(errorHandler); /* * Compute the next offset value. If this was the last chunk, @@ -1127,13 +1155,11 @@ SelRcvIncrProc(clientData, eventPtr) register XEvent *eventPtr; /* X PropertyChange event. */ { register TkSelRetrievalInfo *retrPtr = (TkSelRetrievalInfo *) clientData; - char *propInfo, *dst, *src; + char *propInfo; Atom type; - int format, result, srcLen, dstLen, srcRead, dstWrote, soFar; + int format, result; unsigned long numItems, bytesAfter; - Tcl_DString *dstPtr, temp; Tcl_Interp *interp; - Tcl_Encoding encoding; if ((eventPtr->xproperty.atom != retrPtr->property) || (eventPtr->xproperty.state != PropertyNewValue) @@ -1157,6 +1183,11 @@ SelRcvIncrProc(clientData, eventPtr) if ((type == XA_STRING) || (type == retrPtr->winPtr->dispPtr->textAtom) || (type == retrPtr->winPtr->dispPtr->compoundTextAtom)) { + char *dst, *src; + int srcLen, dstLen, srcRead, dstWrote, soFar; + Tcl_Encoding encoding; + Tcl_DString *dstPtr, temp; + if (format != 8) { char buf[64 + TCL_INTEGER_SPACE]; @@ -1257,6 +1288,54 @@ SelRcvIncrProc(clientData, eventPtr) if (result != TCL_OK) { retrPtr->result = result; } + } else if (type == retrPtr->winPtr->dispPtr->utf8Atom) { + /* + * The X selection data is in UTF-8 format already. + * We can't guarantee that propInfo is NULL-terminated, + * so we might have to copy the string. + */ + char *propData = propInfo; + + if (format != 8) { + char buf[64 + TCL_INTEGER_SPACE]; + + sprintf(buf, + "bad format for string selection: wanted \"8\", got \"%d\"", + format); + Tcl_SetResult(retrPtr->interp, buf, TCL_VOLATILE); + retrPtr->result = TCL_ERROR; + goto done; + } + + /* + * Check for the end of the incremental transfer. + */ + if (numItems == 0) { + retrPtr->result = TCL_OK; + goto done; + } + + /* + * Not sure if this is correct; can propInfo contain embedded + * NUL bytes? Certainly not if it is coming from Tcl/Tk, but + * I don't remember if all other apps treat \u0000 the same + * way... + */ + if (propInfo[numItems] != '\0') { + propData = ckalloc((size_t) numItems + 1); + strcpy(propData, propInfo); + propData[numItems] = '\0'; + } + interp = retrPtr->interp; + Tcl_Preserve((ClientData) interp); + result = (*retrPtr->proc)(retrPtr->clientData, interp, propData); + Tcl_Release((ClientData) interp); + if (propData != propInfo) { + ckfree((char *) propData); + } + if (result != TCL_OK) { + retrPtr->result = result; + } } else if (numItems == 0) { retrPtr->result = TCL_OK; } else { |