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-rw-r--r--generic/tclIO.c933
1 files changed, 169 insertions, 764 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index f1d85bf..ff975c3 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -165,8 +165,6 @@ static ChannelBuffer * AllocChannelBuffer(int length);
static void ChannelTimerProc(ClientData clientData);
static int CheckChannelErrors(ChannelState *statePtr,
int direction);
-static int CheckFlush(Channel *chanPtr, ChannelBuffer *bufPtr,
- int newlineFlag);
static int CheckForDeadChannel(Tcl_Interp *interp,
ChannelState *statePtr);
static void CheckForStdChannelsBeingClosed(Tcl_Channel chan);
@@ -194,15 +192,14 @@ static void DiscardInputQueued(ChannelState *statePtr,
int discardSavedBuffers);
static void DiscardOutputQueued(ChannelState *chanPtr);
static int DoRead(Channel *chanPtr, char *srcPtr, int slen, int allowShortReads);
-static int DoWrite(Channel *chanPtr, const char *src, int srcLen);
static int DoReadChars(Channel *chan, Tcl_Obj *objPtr, int toRead,
int appendFlag);
-static int DoWriteChars(Channel *chan, const char *src, int len);
static int FilterInputBytes(Channel *chanPtr,
GetsState *statePtr);
static int FlushChannel(Tcl_Interp *interp, Channel *chanPtr,
int calledFromAsyncFlush);
static int TclGetsObjBinary(Tcl_Channel chan, Tcl_Obj *objPtr);
+static Tcl_Encoding GetBinaryEncoding();
static void FreeBinaryEncoding(ClientData clientData);
static Tcl_HashTable * GetChannelTable(Tcl_Interp *interp);
static int GetInput(Channel *chanPtr);
@@ -222,18 +219,19 @@ static int SetBlockMode(Tcl_Interp *interp, Channel *chanPtr,
static void StopCopy(CopyState *csPtr);
static int TranslateInputEOL(ChannelState *statePtr, char *dst,
const char *src, int *dstLenPtr, int *srcLenPtr);
-static int TranslateOutputEOL(ChannelState *statePtr, char *dst,
- const char *src, int *dstLenPtr, int *srcLenPtr);
static void UpdateInterest(Channel *chanPtr);
-static int WriteBytes(Channel *chanPtr, const char *src,
- int srcLen);
-static int WriteChars(Channel *chanPtr, const char *src,
- int srcLen);
+static int Write(Channel *chanPtr, const char *src,
+ int srcLen, Tcl_Encoding encoding);
static Tcl_Obj * FixLevelCode(Tcl_Obj *msg);
static void SpliceChannel(Tcl_Channel chan);
static void CutChannel(Tcl_Channel chan);
static int WillRead(Channel *chanPtr);
+#define WriteChars(chanPtr, src, srcLen) \
+ Write(chanPtr, src, srcLen, chanPtr->state->encoding)
+#define WriteBytes(chanPtr, src, srcLen) \
+ Write(chanPtr, src, srcLen, tclIdentityEncoding)
+
/*
* Simplifying helper macros. All may use their argument(s) multiple times.
* The ANSI C "prototypes" for the macros are listed below, together with a
@@ -323,14 +321,13 @@ static int WillRead(Channel *chanPtr);
static void DupChannelIntRep(Tcl_Obj *objPtr, Tcl_Obj *copyPtr);
static int SetChannelFromAny(Tcl_Interp *interp,
Tcl_Obj *objPtr);
-static void UpdateStringOfChannel(Tcl_Obj *objPtr);
static void FreeChannelIntRep(Tcl_Obj *objPtr);
-static const Tcl_ObjType tclChannelType = {
+static const Tcl_ObjType chanObjType = {
"channel", /* name for this type */
FreeChannelIntRep, /* freeIntRepProc */
DupChannelIntRep, /* dupIntRepProc */
- NULL, /* updateStringProc UpdateStringOfChannel */
+ NULL, /* updateStringProc */
NULL /* setFromAnyProc SetChannelFromAny */
};
@@ -339,7 +336,7 @@ static const Tcl_ObjType tclChannelType = {
#define SET_CHANNELSTATE(objPtr, storePtr) \
((objPtr)->internalRep.twoPtrValue.ptr1 = (void *) (storePtr))
#define GET_CHANNELINTERP(objPtr) \
- ((Interp *) (objPtr)->internalRep.twoPtrValue.ptr2)
+ ((Tcl_Interp *) (objPtr)->internalRep.twoPtrValue.ptr2)
#define SET_CHANNELINTERP(objPtr, storePtr) \
((objPtr)->internalRep.twoPtrValue.ptr2 = (void *) (storePtr))
@@ -1581,11 +1578,7 @@ Tcl_CreateChannel(
statePtr->timer = NULL;
statePtr->csPtrR = NULL;
statePtr->csPtrW = NULL;
-
statePtr->outputStage = NULL;
- if ((statePtr->encoding != NULL) && GotFlag(statePtr, TCL_WRITABLE)) {
- statePtr->outputStage = ckalloc(statePtr->bufSize + 2);
- }
/*
* As we are creating the channel, it is obviously the top for now.
@@ -2838,10 +2831,6 @@ CloseChannel(
}
Tcl_FreeEncoding(statePtr->encoding);
- if (statePtr->outputStage != NULL) {
- ckfree(statePtr->outputStage);
- statePtr->outputStage = NULL;
- }
}
/*
@@ -3778,7 +3767,7 @@ Tcl_Write(
if (srcLen < 0) {
srcLen = strlen(src);
}
- return DoWrite(chanPtr, src, srcLen);
+ return WriteBytes(chanPtr, src, srcLen);
}
/*
@@ -3869,82 +3858,40 @@ Tcl_WriteChars(
int len) /* Length of string in bytes, or < 0 for
* strlen(). */
{
- ChannelState *statePtr; /* State info for channel */
-
- statePtr = ((Channel *) chan)->state;
+ Channel *chanPtr = (Channel *) chan;
+ ChannelState *statePtr = chanPtr->state; /* State info for channel */
+ int result;
+ Tcl_Obj *objPtr;
if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
return -1;
}
- return DoWriteChars((Channel *) chan, src, len);
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * DoWriteChars --
- *
- * Takes a sequence of UTF-8 characters and converts them for output
- * using the channel's current encoding, may queue the buffer for output
- * if it gets full, and also remembers whether the current buffer is
- * ready e.g. if it contains a newline and we are in line buffering mode.
- * Compensates stacking, i.e. will redirect the data from the specified
- * channel to the topmost channel in a stack.
- *
- * Results:
- * The number of bytes written or -1 in case of error. If -1,
- * Tcl_GetErrno will return the error code.
- *
- * Side effects:
- * May buffer up output and may cause output to be produced on the
- * channel.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-DoWriteChars(
- Channel *chanPtr, /* The channel to buffer output for. */
- const char *src, /* UTF-8 characters to queue in output
- * buffer. */
- int len) /* Length of string in bytes, or < 0 for
- * strlen(). */
-{
- /*
- * Always use the topmost channel of the stack
- */
-
- ChannelState *statePtr; /* State info for channel */
-
- statePtr = chanPtr->state;
chanPtr = statePtr->topChanPtr;
if (len < 0) {
len = strlen(src);
}
- if (statePtr->encoding == NULL) {
- /*
- * Inefficient way to convert UTF-8 to byte-array, but the code
- * parallels the way it is done for objects.
- * Special case for 1-byte (used by eg [puts] for the \n) could
- * be extended to more efficient translation of the src string.
- */
-
- int result;
+ if (statePtr->encoding) {
+ return WriteChars(chanPtr, src, len);
+ }
- if ((len == 1) && (UCHAR(*src) < 0xC0)) {
- result = WriteBytes(chanPtr, src, len);
- } else {
- Tcl_Obj *objPtr = Tcl_NewStringObj(src, len);
+ /*
+ * Inefficient way to convert UTF-8 to byte-array, but the code
+ * parallels the way it is done for objects. Special case for 1-byte
+ * (used by eg [puts] for the \n) could be extended to more efficient
+ * translation of the src string.
+ */
- src = (char *) Tcl_GetByteArrayFromObj(objPtr, &len);
- result = WriteBytes(chanPtr, src, len);
- TclDecrRefCount(objPtr);
- }
- return result;
+ if ((len == 1) && (UCHAR(*src) < 0xC0)) {
+ return WriteBytes(chanPtr, src, len);
}
- return WriteChars(chanPtr, src, len);
+
+ objPtr = Tcl_NewStringObj(src, len);
+ src = (char *) Tcl_GetByteArrayFromObj(objPtr, &len);
+ result = WriteBytes(chanPtr, src, len);
+ TclDecrRefCount(objPtr);
+ return result;
}
/*
@@ -4036,110 +3983,9 @@ WillRead(
/*
*----------------------------------------------------------------------
*
- * WriteBytes --
- *
- * Write a sequence of bytes into an output buffer, may queue the buffer
- * for output if it gets full, and also remembers whether the current
- * buffer is ready e.g. if it contains a newline and we are in line
- * buffering mode.
- *
- * Results:
- * The number of bytes written or -1 in case of error. If -1,
- * Tcl_GetErrno will return the error code.
+ * Write --
*
- * Side effects:
- * May buffer up output and may cause output to be produced on the
- * channel.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-WriteBytes(
- Channel *chanPtr, /* The channel to buffer output for. */
- const char *src, /* Bytes to write. */
- int srcLen) /* Number of bytes to write. */
-{
- ChannelState *statePtr = chanPtr->state;
- /* State info for channel */
- ChannelBuffer *bufPtr;
- char *dst;
- int dstMax, sawLF, savedLF, total, dstLen, toWrite, translate;
-
- if (srcLen) {
- WillWrite(chanPtr);
- }
-
- total = 0;
- sawLF = 0;
- savedLF = 0;
- translate = GotFlag(statePtr, CHANNEL_LINEBUFFERED)
- || (statePtr->outputTranslation != TCL_TRANSLATE_LF);
-
- /*
- * Loop over all bytes in src, storing them in output buffer with proper
- * EOL translation.
- */
-
- while (srcLen + savedLF > 0) {
- bufPtr = statePtr->curOutPtr;
- if (bufPtr == NULL) {
- bufPtr = AllocChannelBuffer(statePtr->bufSize);
- statePtr->curOutPtr = bufPtr;
- }
- dst = InsertPoint(bufPtr);
- dstMax = SpaceLeft(bufPtr);
- dstLen = dstMax;
-
- toWrite = dstLen;
- if (toWrite > srcLen) {
- toWrite = srcLen;
- }
-
- if (translate) {
- if (savedLF) {
- /*
- * A '\n' was left over from last call to TranslateOutputEOL()
- * and we need to store it in this buffer. If the channel is
- * line-based, we will need to flush it.
- */
-
- *dst++ = '\n';
- dstLen--;
- sawLF++;
- }
- if (TranslateOutputEOL(statePtr, dst, src, &dstLen, &toWrite)) {
- sawLF++;
- }
- dstLen += savedLF;
- savedLF = 0;
- if (dstLen > dstMax) {
- savedLF = 1;
- dstLen = dstMax;
- }
- } else {
- memcpy(dst, src, toWrite);
- dstLen = toWrite;
- }
-
- bufPtr->nextAdded += dstLen;
- if (CheckFlush(chanPtr, bufPtr, sawLF) != 0) {
- return -1;
- }
- total += dstLen;
- src += toWrite;
- srcLen -= toWrite;
- sawLF = 0;
- }
- return total;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * WriteChars --
- *
- * Convert UTF-8 bytes to the channel's external encoding and write the
+ * Convert srcLen bytes starting at src according to encoding and write
* produced bytes into an output buffer, may queue the buffer for output
* if it gets full, and also remembers whether the current buffer is
* ready e.g. if it contains a newline and we are in line buffering mode.
@@ -4156,381 +4002,163 @@ WriteBytes(
*/
static int
-WriteChars(
+Write(
Channel *chanPtr, /* The channel to buffer output for. */
const char *src, /* UTF-8 string to write. */
- int srcLen) /* Length of UTF-8 string in bytes. */
+ int srcLen, /* Length of UTF-8 string in bytes. */
+ Tcl_Encoding encoding)
{
ChannelState *statePtr = chanPtr->state;
/* State info for channel */
- ChannelBuffer *bufPtr;
- char *dst, *stage;
- int saved, savedLF, sawLF, total, dstLen, stageMax, dstWrote;
- int stageLen, toWrite, stageRead, endEncoding, result;
- int consumedSomething, translate;
- Tcl_Encoding encoding;
- char safe[BUFFER_PADDING];
+ char *nextNewLine = NULL;
+ int endEncoding, saved = 0, total = 0, flushed = 0, needNlFlush = 0;
if (srcLen) {
WillWrite(chanPtr);
}
- total = 0;
- sawLF = 0;
- savedLF = 0;
- saved = 0;
- encoding = statePtr->encoding;
-
/*
* Write the terminated escape sequence even if srcLen is 0.
*/
endEncoding = ((statePtr->outputEncodingFlags & TCL_ENCODING_END) != 0);
- translate = GotFlag(statePtr, CHANNEL_LINEBUFFERED)
- || (statePtr->outputTranslation != TCL_TRANSLATE_LF);
-
- /*
- * Loop over all UTF-8 characters in src, storing them in staging buffer
- * with proper EOL translation.
- */
+ if (GotFlag(statePtr, CHANNEL_LINEBUFFERED)
+ || (statePtr->outputTranslation != TCL_TRANSLATE_LF)) {
+ nextNewLine = memchr(src, '\n', srcLen);
+ }
- consumedSomething = 1;
- while (consumedSomething && (srcLen + savedLF + endEncoding > 0)) {
- consumedSomething = 0;
- stage = statePtr->outputStage;
- stageMax = statePtr->bufSize;
- stageLen = stageMax;
+ while (srcLen + saved + endEncoding > 0) {
+ ChannelBuffer *bufPtr;
+ char *dst, safe[BUFFER_PADDING];
+ int result, srcRead, dstLen, dstWrote, srcLimit = srcLen;
- toWrite = stageLen;
- if (toWrite > srcLen) {
- toWrite = srcLen;
+ if (nextNewLine) {
+ srcLimit = nextNewLine - src;
}
-
- if (translate) {
- if (savedLF) {
- /*
- * A '\n' was left over from last call to TranslateOutputEOL()
- * and we need to store it in the staging buffer. If the
- * channel is line-based, we will need to flush the output
- * buffer (after translating the staging buffer).
- */
-
- *stage++ = '\n';
- stageLen--;
- sawLF++;
- }
- if (TranslateOutputEOL(statePtr, stage, src, &stageLen,
- &toWrite)) {
- sawLF++;
- }
-
- stage -= savedLF;
- stageLen += savedLF;
- savedLF = 0;
-
- if (stageLen > stageMax) {
- savedLF = 1;
- stageLen = stageMax;
- }
- } else {
- memcpy(stage, src, toWrite);
- stageLen = toWrite;
+
+ /* Get space to write into */
+ bufPtr = statePtr->curOutPtr;
+ if (bufPtr == NULL) {
+ bufPtr = AllocChannelBuffer(statePtr->bufSize);
+ statePtr->curOutPtr = bufPtr;
}
- src += toWrite;
- srcLen -= toWrite;
-
- /*
- * Loop over all UTF-8 characters in staging buffer, converting them
- * to external encoding, storing them in output buffer.
- */
-
- while (stageLen + saved + endEncoding > 0) {
- bufPtr = statePtr->curOutPtr;
- if (bufPtr == NULL) {
- bufPtr = AllocChannelBuffer(statePtr->bufSize);
- statePtr->curOutPtr = bufPtr;
- }
- dst = InsertPoint(bufPtr);
- dstLen = SpaceLeft(bufPtr);
-
- if (saved != 0) {
- /*
- * Here's some translated bytes left over from the last buffer
- * that we need to stick at the beginning of this buffer.
- */
-
- memcpy(dst, safe, (size_t) saved);
- bufPtr->nextAdded += saved;
- dst += saved;
- dstLen -= saved;
- saved = 0;
- }
-
- result = Tcl_UtfToExternal(NULL, encoding, stage, stageLen,
- statePtr->outputEncodingFlags,
- &statePtr->outputEncodingState, dst,
- dstLen + BUFFER_PADDING, &stageRead, &dstWrote, NULL);
-
+ if (saved) {
/*
- * Fix for SF #506297, reported by Martin Forssen
- * <ruric@users.sourceforge.net>.
- *
- * The encoding chosen in the script exposing the bug writes out
- * three intro characters when TCL_ENCODING_START is set, but does
- * not consume any input as TCL_ENCODING_END is cleared. As some
- * output was generated the enclosing loop calls UtfToExternal
- * again, again with START set. Three more characters in the out
- * and still no use of input ... To break this infinite loop we
- * remove TCL_ENCODING_START from the set of flags after the first
- * call (no condition is required, the later calls remove an unset
- * flag, which is a no-op). This causes the subsequent calls to
- * UtfToExternal to consume and convert the actual input.
+ * Here's some translated bytes left over from the last buffer
+ * that we need to stick at the beginning of this buffer.
*/
- statePtr->outputEncodingFlags &= ~TCL_ENCODING_START;
+ memcpy(InsertPoint(bufPtr), safe, (size_t) saved);
+ bufPtr->nextAdded += saved;
+ saved = 0;
+ }
+ dst = InsertPoint(bufPtr);
+ dstLen = SpaceLeft(bufPtr);
+
+ result = Tcl_UtfToExternal(NULL, encoding, src, srcLimit,
+ statePtr->outputEncodingFlags,
+ &statePtr->outputEncodingState, dst,
+ dstLen + BUFFER_PADDING, &srcRead, &dstWrote, NULL);
+
+ /* See chan-io-1.[89]. Tcl Bug 506297. */
+ statePtr->outputEncodingFlags &= ~TCL_ENCODING_START;
+
+ if ((result != TCL_OK) && (srcRead + dstWrote == 0)) {
+ /* We're reading from invalid/incomplete UTF-8 */
+ if (total == 0) {
+ Tcl_SetErrno(EINVAL);
+ return -1;
+ }
+ break;
+ }
- /*
- * The following code must be executed only when result is not 0.
- */
+ bufPtr->nextAdded += dstWrote;
+ src += srcRead;
+ srcLen -= srcRead;
+ total += dstWrote;
+ dst += dstWrote;
+ dstLen -= dstWrote;
- if ((result != 0) && (stageRead + dstWrote == 0)) {
- /*
- * We have an incomplete UTF-8 character at the end of the
- * staging buffer. It will get moved to the beginning of the
- * staging buffer followed by more bytes from src.
- */
+ if (src == nextNewLine && dstLen > 0) {
+ static char crln[3] = "\r\n";
+ char *nl = NULL;
+ int nlLen = 0;
- src -= stageLen;
- srcLen += stageLen;
- stageLen = 0;
- savedLF = 0;
+ switch (statePtr->outputTranslation) {
+ case TCL_TRANSLATE_LF:
+ nl = crln + 1;
+ nlLen = 1;
+ break;
+ case TCL_TRANSLATE_CR:
+ nl = crln;
+ nlLen = 1;
+ break;
+ case TCL_TRANSLATE_CRLF:
+ nl = crln;
+ nlLen = 2;
+ break;
+ default:
+ Tcl_Panic("unknown output translation requested");
break;
}
- bufPtr->nextAdded += dstWrote;
- if (IsBufferOverflowing(bufPtr)) {
- /*
- * When translating from UTF-8 to external encoding, we
- * allowed the translation to produce a character that crossed
- * the end of the output buffer, so that we would get a
- * completely full buffer before flushing it. The extra bytes
- * will be moved to the beginning of the next buffer.
- */
+
+ result |= Tcl_UtfToExternal(NULL, encoding, nl, nlLen,
+ statePtr->outputEncodingFlags,
+ &statePtr->outputEncodingState, dst,
+ dstLen + BUFFER_PADDING, &srcRead, &dstWrote, NULL);
- saved = -SpaceLeft(bufPtr);
- memcpy(safe, dst + dstLen, (size_t) saved);
- bufPtr->nextAdded = bufPtr->bufLength;
- }
- if (CheckFlush(chanPtr, bufPtr, sawLF) != 0) {
- return -1;
+ if (srcRead != nlLen) {
+ Tcl_Panic("Can This Happen?");
}
+ bufPtr->nextAdded += dstWrote;
+ src++;
+ srcLen--;
total += dstWrote;
- stage += stageRead;
- stageLen -= stageRead;
- sawLF = 0;
-
- consumedSomething = 1;
+ dst += dstWrote;
+ dstLen -= dstWrote;
+ nextNewLine = memchr(src, '\n', srcLen);
+ needNlFlush = 1;
+ }
+ if (IsBufferOverflowing(bufPtr)) {
/*
- * If all translated characters are written to the buffer,
- * endEncoding is set to 0 because the escape sequence may be
- * output.
+ * When translating from UTF-8 to external encoding, we
+ * allowed the translation to produce a character that crossed
+ * the end of the output buffer, so that we would get a
+ * completely full buffer before flushing it. The extra bytes
+ * will be moved to the beginning of the next buffer.
*/
- if ((stageLen + saved == 0) && (result == 0)) {
- endEncoding = 0;
- }
- }
- }
-
- /*
- * If nothing was written and it happened because there was no progress in
- * the UTF conversion, we throw an error.
- */
-
- if (!consumedSomething && (total == 0)) {
- Tcl_SetErrno(EINVAL);
- return -1;
- }
- return total;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * TranslateOutputEOL --
- *
- * Helper function for WriteBytes() and WriteChars(). Converts the '\n'
- * characters in the source buffer into the appropriate EOL form
- * specified by the output translation mode.
- *
- * EOL translation stops either when the source buffer is empty or the
- * output buffer is full.
- *
- * When converting to CRLF mode and there is only 1 byte left in the
- * output buffer, this routine stores the '\r' in the last byte and then
- * stores the '\n' in the byte just past the end of the buffer. The
- * caller is responsible for passing in a buffer that is large enough to
- * hold the extra byte.
- *
- * Results:
- * The return value is 1 if a '\n' was translated from the source buffer,
- * or 0 otherwise -- this can be used by the caller to decide to flush a
- * line-based channel even though the channel buffer is not full.
- *
- * *dstLenPtr is filled with how many bytes of the output buffer were
- * used. As mentioned above, this can be one more that the output
- * buffer's specified length if a CRLF was stored.
- *
- * *srcLenPtr is filled with how many bytes of the source buffer were
- * consumed.
- *
- * Side effects:
- * It may be obvious, but bears mentioning that when converting in CRLF
- * mode (which requires two bytes of storage in the output buffer), the
- * number of bytes consumed from the source buffer will be less than the
- * number of bytes stored in the output buffer.
- *
- *---------------------------------------------------------------------------
- */
-
-static int
-TranslateOutputEOL(
- ChannelState *statePtr, /* Channel being read, for translation and
- * buffering modes. */
- char *dst, /* Output buffer filled with UTF-8 chars by
- * applying appropriate EOL translation to
- * source characters. */
- const char *src, /* Source UTF-8 characters. */
- int *dstLenPtr, /* On entry, the maximum length of output
- * buffer in bytes. On exit, the number of
- * bytes actually used in output buffer. */
- int *srcLenPtr) /* On entry, the length of source buffer. On
- * exit, the number of bytes read from the
- * source buffer. */
-{
- char *dstEnd;
- int srcLen, newlineFound;
-
- newlineFound = 0;
- srcLen = *srcLenPtr;
-
- switch (statePtr->outputTranslation) {
- case TCL_TRANSLATE_LF:
- for (dstEnd = dst + srcLen; dst < dstEnd; ) {
- if (*src == '\n') {
- newlineFound = 1;
- }
- *dst++ = *src++;
+ saved = -SpaceLeft(bufPtr);
+ memcpy(safe, dst + dstLen, (size_t) saved);
+ bufPtr->nextAdded = bufPtr->bufLength;
}
- *dstLenPtr = srcLen;
- break;
- case TCL_TRANSLATE_CR:
- for (dstEnd = dst + srcLen; dst < dstEnd;) {
- if (*src == '\n') {
- *dst++ = '\r';
- newlineFound = 1;
- src++;
- } else {
- *dst++ = *src++;
- }
- }
- *dstLenPtr = srcLen;
- break;
- case TCL_TRANSLATE_CRLF: {
- /*
- * Since this causes the number of bytes to grow, we start off trying
- * to put 'srcLen' bytes into the output buffer, but allow it to store
- * more bytes, as long as there's still source bytes and room in the
- * output buffer.
- */
-
- char *dstStart, *dstMax;
- const char *srcStart;
-
- dstStart = dst;
- dstMax = dst + *dstLenPtr;
- srcStart = src;
-
- if (srcLen < *dstLenPtr) {
- dstEnd = dst + srcLen;
- } else {
- dstEnd = dst + *dstLenPtr;
- }
- while (dst < dstEnd) {
- if (*src == '\n') {
- if (dstEnd < dstMax) {
- dstEnd++;
- }
- *dst++ = '\r';
- newlineFound = 1;
- }
- *dst++ = *src++;
+ if ((srcLen + saved == 0) && (result == TCL_OK)) {
+ endEncoding = 0;
}
- *srcLenPtr = src - srcStart;
- *dstLenPtr = dst - dstStart;
- break;
- }
- default:
- break;
- }
- return newlineFound;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * CheckFlush --
- *
- * Helper function for WriteBytes() and WriteChars(). If the channel
- * buffer is ready to be flushed, flush it.
- *
- * Results:
- * The return value is -1 if there was a problem flushing the channel
- * buffer, or 0 otherwise.
- *
- * Side effects:
- * The buffer will be recycled if it is flushed.
- *
- *---------------------------------------------------------------------------
- */
-
-static int
-CheckFlush(
- Channel *chanPtr, /* Channel being read, for buffering mode. */
- ChannelBuffer *bufPtr, /* Channel buffer to possibly flush. */
- int newlineFlag) /* Non-zero if a the channel buffer contains a
- * newline. */
-{
- ChannelState *statePtr = chanPtr->state;
- /* State info for channel */
-
- /*
- * The current buffer is ready for output:
- * 1. if it is full.
- * 2. if it contains a newline and this channel is line-buffered.
- * 3. if it contains any output and this channel is unbuffered.
- */
- if (!GotFlag(statePtr, BUFFER_READY)) {
if (IsBufferFull(bufPtr)) {
- SetFlag(statePtr, BUFFER_READY);
- } else if (GotFlag(statePtr, CHANNEL_LINEBUFFERED)) {
- if (newlineFlag != 0) {
- SetFlag(statePtr, BUFFER_READY);
+ if (FlushChannel(NULL, chanPtr, 0) != 0) {
+ return -1;
+ }
+ flushed += statePtr->bufSize;
+ if (saved == 0 || src[-1] != '\n') {
+ needNlFlush = 0;
}
- } else if (GotFlag(statePtr, CHANNEL_UNBUFFERED)) {
- SetFlag(statePtr, BUFFER_READY);
}
}
- if (GotFlag(statePtr, BUFFER_READY)) {
+ if ((flushed < total) && (GotFlag(statePtr, CHANNEL_UNBUFFERED) ||
+ (needNlFlush && GotFlag(statePtr, CHANNEL_LINEBUFFERED)))) {
+ SetFlag(statePtr, BUFFER_READY);
if (FlushChannel(NULL, chanPtr, 0) != 0) {
return -1;
}
}
- return 0;
+
+ return total;
}
/*
@@ -4656,16 +4284,7 @@ Tcl_GetsObj(
*/
if (encoding == NULL) {
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- if (tsdPtr->binaryEncoding == NULL) {
- tsdPtr->binaryEncoding = Tcl_GetEncoding(NULL, "iso8859-1");
- Tcl_CreateThreadExitHandler(FreeBinaryEncoding, NULL);
- }
- encoding = tsdPtr->binaryEncoding;
- if (encoding == NULL) {
- Tcl_Panic("attempted gets on binary channel where no iso8859-1 encoding available");
- }
+ encoding = GetBinaryEncoding();
}
/*
@@ -5231,6 +4850,21 @@ FreeBinaryEncoding(
tsdPtr->binaryEncoding = NULL;
}
}
+
+static Tcl_Encoding
+GetBinaryEncoding()
+{
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+ if (tsdPtr->binaryEncoding == NULL) {
+ tsdPtr->binaryEncoding = Tcl_GetEncoding(NULL, "iso8859-1");
+ Tcl_CreateThreadExitHandler(FreeBinaryEncoding, NULL);
+ }
+ if (tsdPtr->binaryEncoding == NULL) {
+ Tcl_Panic("binary encoding is not available");
+ }
+ return tsdPtr->binaryEncoding;
+}
/*
*---------------------------------------------------------------------------
@@ -7594,14 +7228,6 @@ Tcl_SetChannelBufferSize(
statePtr = ((Channel *) chan)->state;
statePtr->bufSize = sz;
-
- if (statePtr->outputStage != NULL) {
- ckfree(statePtr->outputStage);
- statePtr->outputStage = NULL;
- }
- if ((statePtr->encoding != NULL) && GotFlag(statePtr, TCL_WRITABLE)) {
- statePtr->outputStage = ckalloc(statePtr->bufSize + 2);
- }
}
/*
@@ -8242,17 +7868,6 @@ Tcl_SetChannelOption(
statePtr->inQueueTail = NULL;
}
- /*
- * If encoding or bufsize changes, need to update output staging buffer.
- */
-
- if (statePtr->outputStage != NULL) {
- ckfree(statePtr->outputStage);
- statePtr->outputStage = NULL;
- }
- if ((statePtr->encoding != NULL) && GotFlag(statePtr, TCL_WRITABLE)) {
- statePtr->outputStage = ckalloc(statePtr->bufSize + 2);
- }
return TCL_OK;
}
@@ -9399,9 +9014,9 @@ CopyData(
}
if (outBinary || sameEncoding) {
- sizeb = DoWrite(outStatePtr->topChanPtr, buffer, sizeb);
+ sizeb = WriteBytes(outStatePtr->topChanPtr, buffer, sizeb);
} else {
- sizeb = DoWriteChars(outStatePtr->topChanPtr, buffer, sizeb);
+ sizeb = WriteChars(outStatePtr->topChanPtr, buffer, sizeb);
}
/*
@@ -9953,162 +9568,6 @@ CopyBuffer(
/*
*----------------------------------------------------------------------
*
- * DoWrite --
- *
- * Puts a sequence of characters into an output buffer, may queue the
- * buffer for output if it gets full, and also remembers whether the
- * current buffer is ready e.g. if it contains a newline and we are in
- * line buffering mode.
- *
- * Results:
- * The number of bytes written or -1 in case of error. If -1,
- * Tcl_GetErrno will return the error code.
- *
- * Side effects:
- * May buffer up output and may cause output to be produced on the
- * channel.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-DoWrite(
- Channel *chanPtr, /* The channel to buffer output for. */
- const char *src, /* Data to write. */
- int srcLen) /* Number of bytes to write. */
-{
- ChannelState *statePtr = chanPtr->state;
- /* State info for channel */
- ChannelBuffer *outBufPtr; /* Current output buffer. */
- int foundNewline; /* Did we find a newline in output? */
- char *dPtr;
- const char *sPtr; /* Search variables for newline. */
- int crsent; /* In CRLF eol translation mode, remember the
- * fact that a CR was output to the channel
- * without its following NL. */
- int i; /* Loop index for newline search. */
- int destCopied; /* How many bytes were used in this
- * destination buffer to hold the output? */
- int totalDestCopied; /* How many bytes total were copied to the
- * channel buffer? */
- int srcCopied; /* How many bytes were copied from the source
- * string? */
- char *destPtr; /* Where in line to copy to? */
-
- /*
- * If we are in network (or windows) translation mode, record the fact
- * that we have not yet sent a CR to the channel.
- */
-
- crsent = 0;
-
- /*
- * Loop filling buffers and flushing them until all output has been
- * consumed.
- */
-
- srcCopied = 0;
- totalDestCopied = 0;
-
- while (srcLen > 0) {
- /*
- * Make sure there is a current output buffer to accept output.
- */
-
- if (statePtr->curOutPtr == NULL) {
- statePtr->curOutPtr = AllocChannelBuffer(statePtr->bufSize);
- }
-
- outBufPtr = statePtr->curOutPtr;
-
- destCopied = SpaceLeft(outBufPtr);
- if (destCopied > srcLen) {
- destCopied = srcLen;
- }
-
- destPtr = InsertPoint(outBufPtr);
- switch (statePtr->outputTranslation) {
- case TCL_TRANSLATE_LF:
- srcCopied = destCopied;
- memcpy(destPtr, src, (size_t) destCopied);
- break;
- case TCL_TRANSLATE_CR:
- srcCopied = destCopied;
- memcpy(destPtr, src, (size_t) destCopied);
- for (dPtr = destPtr; dPtr < destPtr + destCopied; dPtr++) {
- if (*dPtr == '\n') {
- *dPtr = '\r';
- }
- }
- break;
- case TCL_TRANSLATE_CRLF:
- for (srcCopied = 0, dPtr = destPtr, sPtr = src;
- dPtr < destPtr + destCopied;
- dPtr++, sPtr++, srcCopied++) {
- if (*sPtr == '\n') {
- if (crsent) {
- *dPtr = '\n';
- crsent = 0;
- } else {
- *dPtr = '\r';
- crsent = 1;
- sPtr--, srcCopied--;
- }
- } else {
- *dPtr = *sPtr;
- }
- }
- break;
- case TCL_TRANSLATE_AUTO:
- Tcl_Panic("Tcl_Write: AUTO output translation mode not supported");
- default:
- Tcl_Panic("Tcl_Write: unknown output translation mode");
- }
-
- /*
- * The current buffer is ready for output if it is full, or if it
- * contains a newline and this channel is line-buffered, or if it
- * contains any output and this channel is unbuffered.
- */
-
- outBufPtr->nextAdded += destCopied;
- if (!GotFlag(statePtr, BUFFER_READY)) {
- if (IsBufferFull(outBufPtr)) {
- SetFlag(statePtr, BUFFER_READY);
- } else if (GotFlag(statePtr, CHANNEL_LINEBUFFERED)) {
- for (sPtr = src, i = 0, foundNewline = 0;
- (i < srcCopied) && (!foundNewline);
- i++, sPtr++) {
- if (*sPtr == '\n') {
- foundNewline = 1;
- break;
- }
- }
- if (foundNewline) {
- SetFlag(statePtr, BUFFER_READY);
- }
- } else if (GotFlag(statePtr, CHANNEL_UNBUFFERED)) {
- SetFlag(statePtr, BUFFER_READY);
- }
- }
-
- totalDestCopied += srcCopied;
- src += srcCopied;
- srcLen -= srcCopied;
-
- if (GotFlag(statePtr, BUFFER_READY)) {
- if (FlushChannel(NULL, chanPtr, 0) != 0) {
- return -1;
- }
- }
- } /* Closes "while" */
-
- return totalDestCopied;
-}
-
-/*
- *----------------------------------------------------------------------
- *
* CopyEventProc --
*
* This routine is invoked as a channel event handler for the background
@@ -11331,12 +10790,11 @@ DupChannelIntRep(
* currently have an internal rep.*/
{
ChannelState *statePtr = GET_CHANNELSTATE(srcPtr);
- Interp *interpPtr = GET_CHANNELINTERP(srcPtr);
SET_CHANNELSTATE(copyPtr, statePtr);
- SET_CHANNELINTERP(copyPtr, interpPtr);
+ SET_CHANNELINTERP(copyPtr, GET_CHANNELINTERP(srcPtr));
Tcl_Preserve(statePtr);
- copyPtr->typePtr = &tclChannelType;
+ copyPtr->typePtr = srcPtr->typePtr;
}
/*
@@ -11362,43 +10820,29 @@ SetChannelFromAny(
register Tcl_Obj *objPtr) /* The object to convert. */
{
ChannelState *statePtr;
- Interp *interpPtr;
if (interp == NULL) {
return TCL_ERROR;
}
- if (objPtr->typePtr == &tclChannelType) {
+ if (objPtr->typePtr == &chanObjType) {
/*
* The channel is valid until any call to DetachChannel occurs.
* Ensure consistency checks are done.
*/
statePtr = GET_CHANNELSTATE(objPtr);
- interpPtr = GET_CHANNELINTERP(objPtr);
if (GotFlag(statePtr, CHANNEL_TAINTED|CHANNEL_CLOSED)) {
ResetFlag(statePtr, CHANNEL_TAINTED);
Tcl_Release(statePtr);
- UpdateStringOfChannel(objPtr);
objPtr->typePtr = NULL;
- } else if (interpPtr != (Interp*) interp) {
+ } else if (interp != GET_CHANNELINTERP(objPtr)) {
Tcl_Release(statePtr);
- UpdateStringOfChannel(objPtr);
objPtr->typePtr = NULL;
}
}
- if (objPtr->typePtr != &tclChannelType) {
- Tcl_Channel chan;
-
- /*
- * We need a valid string with which to check for a valid channel, but
- * make sure not to free internal rep until validated. [Bug 1847044]
- */
+ if (objPtr->typePtr != &chanObjType) {
+ Tcl_Channel chan = Tcl_GetChannel(interp, TclGetString(objPtr), NULL);
- if ((objPtr->typePtr != NULL) && (objPtr->bytes == NULL)) {
- objPtr->typePtr->updateStringProc(objPtr);
- }
-
- chan = Tcl_GetChannel(interp, objPtr->bytes, NULL);
if (chan == NULL) {
return TCL_ERROR;
}
@@ -11408,7 +10852,7 @@ SetChannelFromAny(
Tcl_Preserve(statePtr);
SET_CHANNELSTATE(objPtr, statePtr);
SET_CHANNELINTERP(objPtr, interp);
- objPtr->typePtr = &tclChannelType;
+ objPtr->typePtr = &chanObjType;
}
return TCL_OK;
}
@@ -11416,45 +10860,6 @@ SetChannelFromAny(
/*
*----------------------------------------------------------------------
*
- * UpdateStringOfChannel --
- *
- * Update the string representation for an object whose internal
- * representation is "Channel".
- *
- * Results:
- * None.
- *
- * Side effects:
- * The object's string may be set by converting its Unicode represention
- * to UTF format.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfChannel(
- Tcl_Obj *objPtr) /* Object with string rep to update. */
-{
- if (objPtr->bytes == NULL) {
- ChannelState *statePtr = GET_CHANNELSTATE(objPtr);
- const char *name = statePtr->channelName;
-
- if (name) {
- size_t len = strlen(name);
-
- objPtr->bytes = ckalloc(len + 1);
- objPtr->length = len;
- memcpy(objPtr->bytes, name, len);
- } else {
- objPtr->bytes = tclEmptyStringRep;
- objPtr->length = 0;
- }
- }
-}
-
-/*
- *----------------------------------------------------------------------
- *
* FreeChannelIntRep --
*
* Release statePtr storage.