summaryrefslogtreecommitdiffstats
path: root/generic/tclPipe.c
diff options
context:
space:
mode:
Diffstat (limited to 'generic/tclPipe.c')
-rw-r--r--generic/tclPipe.c261
1 files changed, 145 insertions, 116 deletions
diff --git a/generic/tclPipe.c b/generic/tclPipe.c
index 698f85d..83fb818 100644
--- a/generic/tclPipe.c
+++ b/generic/tclPipe.c
@@ -32,8 +32,8 @@ TCL_DECLARE_MUTEX(pipeMutex) /* Guard access to detList. */
* Declarations for local functions defined in this file:
*/
-static TclFile FileForRedirect(Tcl_Interp *interp, CONST char *spec,
- int atOk, CONST char *arg, CONST char *nextArg,
+static TclFile FileForRedirect(Tcl_Interp *interp, const char *spec,
+ int atOk, const char *arg, const char *nextArg,
int flags, int *skipPtr, int *closePtr,
int *releasePtr);
@@ -61,14 +61,14 @@ static TclFile FileForRedirect(Tcl_Interp *interp, CONST char *spec,
static TclFile
FileForRedirect(
Tcl_Interp *interp, /* Intepreter to use for error reporting. */
- CONST char *spec, /* Points to character just after redirection
+ const char *spec, /* Points to character just after redirection
* character. */
int atOK, /* Non-zero means that '@' notation can be
* used to specify a channel, zero means that
* it isn't. */
- CONST char *arg, /* Pointer to entire argument containing spec:
+ const char *arg, /* Pointer to entire argument containing spec:
* used for error reporting. */
- CONST char *nextArg, /* Next argument in argc/argv array, if needed
+ const char *nextArg, /* Next argument in argc/argv array, if needed
* for file name or channel name. May be
* NULL. */
int flags, /* Flags to use for opening file or to specify
@@ -94,23 +94,27 @@ FileForRedirect(
}
*skipPtr = 2;
}
- chan = Tcl_GetChannel(interp, spec, NULL);
- if (chan == (Tcl_Channel) NULL) {
- return NULL;
- }
+ chan = Tcl_GetChannel(interp, spec, NULL);
+ if (chan == (Tcl_Channel) NULL) {
+ return NULL;
+ }
file = TclpMakeFile(chan, writing ? TCL_WRITABLE : TCL_READABLE);
- if (file == NULL) {
- Tcl_Obj* msg;
+ if (file == NULL) {
+ Tcl_Obj *msg;
+
Tcl_GetChannelError(chan, &msg);
if (msg) {
- Tcl_SetObjResult (interp, msg);
+ Tcl_SetObjResult(interp, msg);
} else {
- Tcl_AppendResult(interp, "channel \"", Tcl_GetChannelName(chan),
- "\" wasn't opened for ",
- ((writing) ? "writing" : "reading"), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "channel \"%s\" wasn't opened for %s",
+ Tcl_GetChannelName(chan),
+ ((writing) ? "writing" : "reading")));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "BADCHAN", NULL);
}
- return NULL;
- }
+ return NULL;
+ }
*releasePtr = 1;
if (writing) {
/*
@@ -118,10 +122,10 @@ FileForRedirect(
* by the child appears after stuff we've already written.
*/
- Tcl_Flush(chan);
+ Tcl_Flush(chan);
}
} else {
- CONST char *name;
+ const char *name;
Tcl_DString nameString;
if (*spec == '\0') {
@@ -138,18 +142,20 @@ FileForRedirect(
file = TclpOpenFile(name, flags);
Tcl_DStringFree(&nameString);
if (file == NULL) {
- Tcl_AppendResult(interp, "couldn't ",
- ((writing) ? "write" : "read"), " file \"", spec, "\": ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't %s file \"%s\": %s",
+ (writing ? "write" : "read"), spec,
+ Tcl_PosixError(interp)));
return NULL;
}
- *closePtr = 1;
+ *closePtr = 1;
}
return file;
badLastArg:
- Tcl_AppendResult(interp, "can't specify \"", arg,
- "\" as last word in command", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't specify \"%s\" as last word in command", arg));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC", "SYNTAX", NULL);
return NULL;
}
@@ -182,7 +188,7 @@ Tcl_DetachPids(
Tcl_MutexLock(&pipeMutex);
for (i = 0; i < numPids; i++) {
- detPtr = (Detached *) ckalloc(sizeof(Detached));
+ detPtr = ckalloc(sizeof(Detached));
detPtr->pid = pidPtr[i];
detPtr->nextPtr = detList;
detList = detPtr;
@@ -232,7 +238,7 @@ Tcl_ReapDetachedProcs(void)
} else {
prevPtr->nextPtr = detPtr->nextPtr;
}
- ckfree((char *) detPtr);
+ ckfree(detPtr);
detPtr = nextPtr;
}
Tcl_MutexUnlock(&pipeMutex);
@@ -272,8 +278,8 @@ TclCleanupChildren(
int result = TCL_OK;
int i, abnormalExit, anyErrorInfo;
Tcl_Pid pid;
- WAIT_STATUS_TYPE waitStatus;
- CONST char *msg;
+ int waitStatus;
+ const char *msg;
unsigned long resolvedPid;
abnormalExit = 0;
@@ -285,24 +291,24 @@ TclCleanupChildren(
*/
resolvedPid = TclpGetPid(pidPtr[i]);
- pid = Tcl_WaitPid(pidPtr[i], (int *) &waitStatus, 0);
+ pid = Tcl_WaitPid(pidPtr[i], &waitStatus, 0);
if (pid == (Tcl_Pid) -1) {
result = TCL_ERROR;
- if (interp != NULL) {
- msg = Tcl_PosixError(interp);
- if (errno == ECHILD) {
+ if (interp != NULL) {
+ msg = Tcl_PosixError(interp);
+ if (errno == ECHILD) {
/*
- * This changeup in message suggested by Mark Diekhans to
- * remind people that ECHILD errors can occur on some
- * systems if SIGCHLD isn't in its default state.
- */
-
- msg =
- "child process lost (is SIGCHLD ignored or trapped?)";
- }
- Tcl_AppendResult(interp, "error waiting for process to exit: ",
- msg, NULL);
- }
+ * This changeup in message suggested by Mark Diekhans to
+ * remind people that ECHILD errors can occur on some
+ * systems if SIGCHLD isn't in its default state.
+ */
+
+ msg =
+ "child process lost (is SIGCHLD ignored or trapped?)";
+ }
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error waiting for process to exit: %s", msg));
+ }
continue;
}
@@ -319,32 +325,32 @@ TclCleanupChildren(
result = TCL_ERROR;
sprintf(msg1, "%lu", resolvedPid);
if (WIFEXITED(waitStatus)) {
- if (interp != (Tcl_Interp *) NULL) {
- sprintf(msg2, "%lu",
- (unsigned long) WEXITSTATUS(waitStatus));
- Tcl_SetErrorCode(interp, "CHILDSTATUS", msg1, msg2, NULL);
- }
+ if (interp != NULL) {
+ sprintf(msg2, "%u", WEXITSTATUS(waitStatus));
+ Tcl_SetErrorCode(interp, "CHILDSTATUS", msg1, msg2, NULL);
+ }
abnormalExit = 1;
} else if (interp != NULL) {
- CONST char *p;
+ const char *p;
if (WIFSIGNALED(waitStatus)) {
- p = Tcl_SignalMsg((int) (WTERMSIG(waitStatus)));
- Tcl_SetErrorCode(interp, "CHILDKILLED", msg1,
- Tcl_SignalId((int) (WTERMSIG(waitStatus))), p,
- NULL);
- Tcl_AppendResult(interp, "child killed: ", p, "\n", NULL);
+ p = Tcl_SignalMsg(WTERMSIG(waitStatus));
+ Tcl_SetErrorCode(interp, "CHILDKILLED", msg1,
+ Tcl_SignalId(WTERMSIG(waitStatus)), p, NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "child killed: %s\n", p));
} else if (WIFSTOPPED(waitStatus)) {
- p = Tcl_SignalMsg((int) (WSTOPSIG(waitStatus)));
- Tcl_SetErrorCode(interp, "CHILDSUSP", msg1,
- Tcl_SignalId((int) (WSTOPSIG(waitStatus))), p,
- NULL);
- Tcl_AppendResult(interp, "child suspended: ", p, "\n",
- NULL);
+ p = Tcl_SignalMsg(WSTOPSIG(waitStatus));
+ Tcl_SetErrorCode(interp, "CHILDSUSP", msg1,
+ Tcl_SignalId(WSTOPSIG(waitStatus)), p, NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "child suspended: %s\n", p));
} else {
- Tcl_AppendResult(interp,
- "child wait status didn't make sense\n", NULL);
- }
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "child wait status didn't make sense\n", -1));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "ODDWAITRESULT", msg1, NULL);
+ }
}
}
}
@@ -360,7 +366,7 @@ TclCleanupChildren(
* Make sure we start at the beginning of the file.
*/
- if (interp != NULL) {
+ if (interp != NULL) {
int count;
Tcl_Obj *objPtr;
@@ -371,8 +377,9 @@ TclCleanupChildren(
result = TCL_ERROR;
Tcl_DecrRefCount(objPtr);
Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "error reading stderr output file: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error reading stderr output file: %s",
+ Tcl_PosixError(interp)));
} else if (count > 0) {
anyErrorInfo = 1;
Tcl_SetObjResult(interp, objPtr);
@@ -390,7 +397,8 @@ TclCleanupChildren(
*/
if ((abnormalExit != 0) && (anyErrorInfo == 0) && (interp != NULL)) {
- Tcl_AppendResult(interp, "child process exited abnormally", NULL);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "child process exited abnormally", -1));
}
return result;
}
@@ -428,7 +436,7 @@ int
TclCreatePipeline(
Tcl_Interp *interp, /* Interpreter to use for error reporting. */
int argc, /* Number of entries in argv. */
- CONST char **argv, /* Array of strings describing commands in
+ const char **argv, /* Array of strings describing commands in
* pipeline plus I/O redirection with <, <<,
* >, etc. Argv[argc] must be NULL. */
Tcl_Pid **pidArrayPtr, /* Word at *pidArrayPtr gets filled in with
@@ -464,7 +472,7 @@ TclCreatePipeline(
* *pidPtr right now. */
int cmdCount; /* Count of number of distinct commands found
* in argc/argv. */
- CONST char *inputLiteral = NULL;
+ const char *inputLiteral = NULL;
/* If non-null, then this points to a string
* containing input data (specified via <<) to
* be piped to the first process in the
@@ -473,22 +481,22 @@ TclCreatePipeline(
* first process in pipeline (specified via <
* or <@). */
int inputClose = 0; /* If non-zero, then inputFile should be
- * closed when cleaning up. */
+ * closed when cleaning up. */
int inputRelease = 0;
TclFile outputFile = NULL; /* Writable file for output from last command
* in pipeline (could be file or pipe). NULL
* means use stdout. */
int outputClose = 0; /* If non-zero, then outputFile should be
- * closed when cleaning up. */
+ * closed when cleaning up. */
int outputRelease = 0;
TclFile errorFile = NULL; /* Writable file for error output from all
* commands in pipeline. NULL means use
* stderr. */
int errorClose = 0; /* If non-zero, then errorFile should be
- * closed when cleaning up. */
+ * closed when cleaning up. */
int errorRelease = 0;
- CONST char *p;
- CONST char *nextArg;
+ const char *p;
+ const char *nextArg;
int skip, lastBar, lastArg, i, j, atOK, flags, needCmd, errorToOutput = 0;
Tcl_DString execBuffer;
TclFile pipeIn;
@@ -539,8 +547,10 @@ TclCreatePipeline(
}
if (*p == '\0') {
if ((i == (lastBar + 1)) || (i == (argc - 1))) {
- Tcl_SetResult(interp, "illegal use of | or |& in command",
- TCL_STATIC);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "illegal use of | or |& in command", -1));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "PIPESYNTAX", NULL);
goto error;
}
}
@@ -565,8 +575,11 @@ TclCreatePipeline(
if (*inputLiteral == '\0') {
inputLiteral = ((i + 1) == argc) ? NULL : argv[i + 1];
if (inputLiteral == NULL) {
- Tcl_AppendResult(interp, "can't specify \"", argv[i],
- "\" as last word in command", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't specify \"%s\" as last word in command",
+ argv[i]));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "PIPESYNTAX", NULL);
goto error;
}
skip = 2;
@@ -673,8 +686,11 @@ TclCreatePipeline(
*/
if (i != argc-1) {
- Tcl_AppendResult(interp, "must specify \"", argv[i],
- "\" as last word in command", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "must specify \"%s\" as last word in command",
+ argv[i]));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "PIPESYNTAX", NULL);
goto error;
}
errorFile = outputFile;
@@ -691,9 +707,12 @@ TclCreatePipeline(
break;
default:
- /* Got a command word, not a redirection */
- needCmd = 0;
- break;
+ /*
+ * Got a command word, not a redirection.
+ */
+
+ needCmd = 0;
+ break;
}
if (skip != 0) {
@@ -706,11 +725,14 @@ TclCreatePipeline(
}
if (needCmd) {
- /* We had a bar followed only by redirections. */
+ /*
+ * We had a bar followed only by redirections.
+ */
- Tcl_SetResult(interp,
- "illegal use of | or |& in command",
- TCL_STATIC);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "illegal use of | or |& in command", -1));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC", "PIPESYNTAX",
+ NULL);
goto error;
}
@@ -724,9 +746,9 @@ TclCreatePipeline(
inputFile = TclpCreateTempFile(inputLiteral);
if (inputFile == NULL) {
- Tcl_AppendResult(interp,
- "couldn't create input file for command: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't create input file for command: %s",
+ Tcl_PosixError(interp)));
goto error;
}
inputClose = 1;
@@ -737,9 +759,9 @@ TclCreatePipeline(
*/
if (TclpCreatePipe(&inputFile, inPipePtr) == 0) {
- Tcl_AppendResult(interp,
- "couldn't create input pipe for command: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't create input pipe for command: %s",
+ Tcl_PosixError(interp)));
goto error;
}
inputClose = 1;
@@ -766,9 +788,9 @@ TclCreatePipeline(
*/
if (TclpCreatePipe(outPipePtr, &outputFile) == 0) {
- Tcl_AppendResult(interp,
- "couldn't create output pipe for command: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't create output pipe for command: %s",
+ Tcl_PosixError(interp)));
goto error;
}
outputClose = 1;
@@ -806,9 +828,9 @@ TclCreatePipeline(
errorFile = TclpCreateTempFile(NULL);
if (errorFile == NULL) {
- Tcl_AppendResult(interp,
- "couldn't create error file for command: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't create error file for command: %s",
+ Tcl_PosixError(interp)));
goto error;
}
*errFilePtr = errorFile;
@@ -833,14 +855,14 @@ TclCreatePipeline(
*/
Tcl_ReapDetachedProcs();
- pidPtr = (Tcl_Pid *) ckalloc((unsigned) (cmdCount * sizeof(Tcl_Pid)));
+ pidPtr = ckalloc(cmdCount * sizeof(Tcl_Pid));
curInFile = inputFile;
for (i = 0; i < argc; i = lastArg + 1) {
int result, joinThisError;
Tcl_Pid pid;
- CONST char *oldName;
+ const char *oldName;
/*
* Convert the program name into native form.
@@ -879,8 +901,8 @@ TclCreatePipeline(
} else {
argv[lastArg] = NULL;
if (TclpCreatePipe(&pipeIn, &curOutFile) == 0) {
- Tcl_AppendResult(interp, "couldn't create pipe: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't create pipe: %s", Tcl_PosixError(interp)));
goto error;
}
}
@@ -986,7 +1008,7 @@ TclCreatePipeline(
Tcl_DetachPids(1, &pidPtr[i]);
}
}
- ckfree((char *) pidPtr);
+ ckfree(pidPtr);
}
numPids = -1;
goto cleanup;
@@ -1027,9 +1049,9 @@ TclCreatePipeline(
Tcl_Channel
Tcl_OpenCommandChannel(
Tcl_Interp *interp, /* Interpreter for error reporting. Can NOT be
- * NULL. */
+ * NULL. */
int argc, /* How many arguments. */
- CONST char **argv, /* Array of arguments for command pipe. */
+ const char **argv, /* Array of arguments for command pipe. */
int flags) /* Or'ed combination of TCL_STDIN, TCL_STDOUT,
* TCL_STDERR, and TCL_ENFORCE_MODE. */
{
@@ -1046,7 +1068,7 @@ Tcl_OpenCommandChannel(
errFilePtr = (flags & TCL_STDERR) ? &errFile : NULL;
numPids = TclCreatePipeline(interp, argc, argv, &pidPtr, inPipePtr,
- outPipePtr, errFilePtr);
+ outPipePtr, errFilePtr);
if (numPids < 0) {
goto error;
@@ -1059,13 +1081,19 @@ Tcl_OpenCommandChannel(
if (flags & TCL_ENFORCE_MODE) {
if ((flags & TCL_STDOUT) && (outPipe == NULL)) {
- Tcl_AppendResult(interp, "can't read output from command:"
- " standard output was redirected", NULL);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "can't read output from command:"
+ " standard output was redirected", -1));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "BADREDIRECT", NULL);
goto error;
}
if ((flags & TCL_STDIN) && (inPipe == NULL)) {
- Tcl_AppendResult(interp, "can't write input to command:"
- " standard input was redirected", NULL);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "can't write input to command:"
+ " standard input was redirected", -1));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC",
+ "BADREDIRECT", NULL);
goto error;
}
}
@@ -1073,9 +1101,10 @@ Tcl_OpenCommandChannel(
channel = TclpCreateCommandChannel(outPipe, inPipe, errFile,
numPids, pidPtr);
- if (channel == (Tcl_Channel) NULL) {
- Tcl_AppendResult(interp, "pipe for command could not be created",
- NULL);
+ if (channel == NULL) {
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "pipe for command could not be created", -1));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "EXEC", "NOPIPE", NULL);
goto error;
}
return channel;
@@ -1083,7 +1112,7 @@ Tcl_OpenCommandChannel(
error:
if (numPids > 0) {
Tcl_DetachPids(numPids, pidPtr);
- ckfree((char *) pidPtr);
+ ckfree(pidPtr);
}
if (inPipe != NULL) {
TclpCloseFile(inPipe);
generated by cgit v0.12 at 2024-07-16 15:48:42 (GMT)