diff options
Diffstat (limited to 'macosx/tkMacOSXSend.c')
| -rw-r--r-- | macosx/tkMacOSXSend.c | 389 |
1 files changed, 189 insertions, 200 deletions
diff --git a/macosx/tkMacOSXSend.c b/macosx/tkMacOSXSend.c index 39c4cf0..a8077cb 100644 --- a/macosx/tkMacOSXSend.c +++ b/macosx/tkMacOSXSend.c @@ -1,173 +1,169 @@ /* * tkMacOSXSend.c -- * - * This file provides procedures that implement the "send" - * command, allowing commands to be passed from interpreter - * to interpreter. This current implementation for the Mac - * has most functionality stubed out. - * - * The current plan, which we have not had time to implement, is - * for the first Wish app to create a gestalt of type 'WIsH'. - * This gestalt will point to a table, in system memory, of - * Tk apps. Each Tk app, when it starts up, will register their - * name, and process ID, in this table. This will allow us to - * implement "tk appname". - * - * Then the send command will look up the process id of the target - * app in this table, and send an AppleEvent to that process. The - * AppleEvent handler is much like the do script handler, except that - * you have to specify the name of the tk app as well, since there may - * be many interps in one wish app, and you need to send it to the - * right one. - * - * Implementing this has been on our list of things to do, but what - * with the demise of Tcl at Sun, and the lack of resources at - * Scriptics it may not get done for awhile. So this sketch is - * offered for the brave to attempt if they need the functionality... + * This file provides procedures that implement the "send" command, + * allowing commands to be passed from interpreter to interpreter. This + * current implementation for the Mac has most functionality stubed out. + * + * The current plan, which we have not had time to implement, is for the + * first Wish app to create a gestalt of type 'WIsH'. This gestalt will + * point to a table, in system memory, of Tk apps. Each Tk app, when it + * starts up, will register their name, and process ID, in this table. + * This will allow us to implement "tk appname". + * + * Then the send command will look up the process id of the target app in + * this table, and send an AppleEvent to that process. The AppleEvent + * handler is much like the do script handler, except that you have to + * specify the name of the tk app as well, since there may be many + * interps in one wish app, and you need to send it to the right one. + * + * Implementing this has been on our list of things to do, but what with + * the demise of Tcl at Sun, and the lack of resources at Scriptics it + * may not get done for awhile. So this sketch is offered for the brave + * to attempt if they need the functionality... * * Copyright (c) 1989-1994 The Regents of the University of California. * Copyright (c) 1994-1998 Sun Microsystems, Inc. * Copyright 2001, Apple Computer, Inc. * Copyright (c) 2005-2007 Daniel A. Steffen <das@users.sourceforge.net> * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #include "tkMacOSXInt.h" /* - * The following structure is used to keep track of the - * interpreters registered by this process. + * The following structure is used to keep track of the interpreters + * registered by this process. */ typedef struct RegisteredInterp { char *name; /* Interpreter's name (malloc-ed). */ - Tcl_Interp *interp; /* Interpreter associated with - * name. */ + Tcl_Interp *interp; /* Interpreter associated with name. */ struct RegisteredInterp *nextPtr; - /* Next in list of names associated - * with interps in this process. - * NULL means end of list. */ + /* Next in list of names associated with + * interps in this process. NULL means end of + * list. */ } RegisteredInterp; /* - * A registry of all interpreters for a display is kept in a - * property "InterpRegistry" on the root window of the display. - * It is organized as a series of zero or more concatenated strings - * (in no particular order), each of the form + * A registry of all interpreters for a display is kept in a property + * "InterpRegistry" on the root window of the display. It is organized as a + * series of zero or more concatenated strings (in no particular order), each + * of the form * window space name '\0' - * where "window" is the hex id of the comm. window to use to talk - * to an interpreter named "name". + * where "window" is the hex id of the comm. window to use to talk to an + * interpreter named "name". * - * When the registry is being manipulated by an application (e.g. to - * add or remove an entry), it is loaded into memory using a structure - * of the following type: + * When the registry is being manipulated by an application (e.g. to add or + * remove an entry), it is loaded into memory using a structure of the + * following type: */ typedef struct NameRegistry { TkDisplay *dispPtr; /* Display from which the registry was * read. */ - int locked; /* Non-zero means that the display was - * locked when the property was read in. */ - int modified; /* Non-zero means that the property has - * been modified, so it needs to be written - * out when the NameRegistry is closed. */ + int locked; /* Non-zero means that the display was locked + * when the property was read in. */ + int modified; /* Non-zero means that the property has been + * modified, so it needs to be written out + * when the NameRegistry is closed. */ unsigned long propLength; /* Length of the property, in bytes. */ - char *property; /* The contents of the property, or NULL - * if none. See format description above; - * this is *not* terminated by the first - * null character. Dynamically allocated. */ + char *property; /* The contents of the property, or NULL if + * none. See format description above; this is + * *not* terminated by the first null + * character. Dynamically allocated. */ int allocedByX; /* Non-zero means must free property with * XFree; zero means use ckfree. */ } NameRegistry; -static int initialized = false; /* A flag to denote if we have initialized yet. */ +static int initialized = false; /* A flag to denote if we have initialized + * yet. */ static RegisteredInterp *interpListPtr = NULL; -/* List of all interpreters - * registered by this process. */ - - /* - * The information below is used for communication between processes - * during "send" commands. Each process keeps a private window, never - * even mapped, with one property, "Comm". When a command is sent to - * an interpreter, the command is appended to the comm property of the - * communication window associated with the interp's process. Similarly, - * when a result is returned from a sent command, it is also appended - * to the comm property. - * - * Each command and each result takes the form of ASCII text. For a - * command, the text consists of a zero character followed by several - * null-terminated ASCII strings. The first string consists of the - * single letter "c". Subsequent strings have the form "option value" - * where the following options are supported: - * - * -r commWindow serial - * - * This option means that a response should be sent to the window - * whose X identifier is "commWindow" (in hex), and the response should - * be identified with the serial number given by "serial" (in decimal). - * If this option isn't specified then the send is asynchronous and - * no response is sent. - * - * -n name - * "Name" gives the name of the application for which the command is - * intended. This option must be present. - * - * -s script - * - * "Script" is the script to be executed. This option must be present. - * - * The options may appear in any order. The -n and -s options must be - * present, but -r may be omitted for asynchronous RPCs. For compatibility - * with future releases that may add new features, there may be additional - * options present; as long as they start with a "-" character, they will - * be ignored. - * - * A result also consists of a zero character followed by several null- - * terminated ASCII strings. The first string consists of the single - * letter "r". Subsequent strings have the form "option value" where - * the following options are supported: - * - * -s serial - * - * Identifies the command for which this is the result. It is the - * same as the "serial" field from the -s option in the command. This - * option must be present. - * - * -c code - * - * "Code" is the completion code for the script, in decimal. If the - * code is omitted it defaults to TCL_OK. - * - * -r result - * - * "Result" is the result string for the script, which may be either - * a result or an error message. If this field is omitted then it - * defaults to an empty string. - * - * -i errorInfo - * - * "ErrorInfo" gives a string with which to initialize the errorInfo - * variable. This option may be omitted; it is ignored unless the - * completion code is TCL_ERROR. - * - * -e errorCode - * - * "ErrorCode" gives a string with with to initialize the errorCode - * variable. This option may be omitted; it is ignored unless the - * completion code is TCL_ERROR. - * - * Options may appear in any order, and only the -s option must be - * present. As with commands, there may be additional options besides - * these; unknown options are ignored. - */ - - /* - * Maximum size property that can be read at one time by - * this module: - */ + /* List of all interpreters registered by this + * process. */ + +/* + * The information below is used for communication between processes during + * "send" commands. Each process keeps a private window, never even mapped, + * with one property, "Comm". When a command is sent to an interpreter, the + * command is appended to the comm property of the communication window + * associated with the interp's process. Similarly, when a result is returned + * from a sent command, it is also appended to the comm property. + * + * Each command and each result takes the form of ASCII text. For a command, + * the text consists of a zero character followed by several null-terminated + * ASCII strings. The first string consists of the single letter "c". + * Subsequent strings have the form "option value" where the following options + * are supported: + * + * -r commWindow serial + * + * This option means that a response should be sent to the window whose X + * identifier is "commWindow" (in hex), and the response should be + * identified with the serial number given by "serial" (in decimal). If + * this option isn't specified then the send is asynchronous and no + * response is sent. + * + * -n name + * + * "Name" gives the name of the application for which the command is + * intended. This option must be present. + * + * -s script + * + * "Script" is the script to be executed. This option must be present. + * + * The options may appear in any order. The -n and -s options must be present, + * but -r may be omitted for asynchronous RPCs. For compatibility with future + * releases that may add new features, there may be additional options + * present; as long as they start with a "-" character, they will be ignored. + * + * + * A result also consists of a zero character followed by several null- + * terminated ASCII strings. The first string consists of the single letter + * "r". Subsequent strings have the form "option value" where the following + * options are supported: + * + * -s serial + * + * Identifies the command for which this is the result. It is the same as + * the "serial" field from the -s option in the command. This option must + * be present. + * + * -c code + * + * "Code" is the completion code for the script, in decimal. If the code + * is omitted it defaults to TCL_OK. + * + * -r result + * + * "Result" is the result string for the script, which may be either a + * result or an error message. If this field is omitted then it defaults + * to an empty string. + * + * -i errorInfo + * + * "ErrorInfo" gives a string with which to initialize the errorInfo + * variable. This option may be omitted; it is ignored unless the + * completion code is TCL_ERROR. + * + * -e errorCode + * + * "ErrorCode" gives a string with with to initialize the errorCode + * variable. This option may be omitted; it is ignored unless the + * completion code is TCL_ERROR. + * + * Options may appear in any order, and only the -s option must be present. As + * with commands, there may be additional options besides these; unknown + * options are ignored. + */ + +/* + * Maximum size property that can be read at one time by this module: + */ #define MAX_PROP_WORDS 100000 @@ -176,7 +172,6 @@ static RegisteredInterp *interpListPtr = NULL; */ static int SendInit(Tcl_Interp *interp); - /* *-------------------------------------------------------------- @@ -184,34 +179,33 @@ static int SendInit(Tcl_Interp *interp); * Tk_SetAppName -- * * This procedure is called to associate an ASCII name with a Tk - * application. If the application has already been named, the - * name replaces the old one. + * application. If the application has already been named, the name + * replaces the old one. * * Results: - * The return value is the name actually given to the application. - * This will normally be the same as name, but if name was already - * in use for an application then a name of the form "name #2" will - * be chosen, with a high enough number to make the name unique. + * The return value is the name actually given to the application. This + * will normally be the same as name, but if name was already in use for + * an application then a name of the form "name #2" will be chosen, with + * a high enough number to make the name unique. * * Side effects: - * Registration info is saved, thereby allowing the "send" command - * to be used later to invoke commands in the application. In - * addition, the "send" command is created in the application's - * interpreter. The registration will be removed automatically - * if the interpreter is deleted or the "send" command is removed. + * Registration info is saved, thereby allowing the "send" command to be + * used later to invoke commands in the application. In addition, the + * "send" command is created in the application's interpreter. The + * registration will be removed automatically if the interpreter is + * deleted or the "send" command is removed. * *-------------------------------------------------------------- */ CONST char * Tk_SetAppName( - Tk_Window tkwin, /* Token for any window in the application - * to be named: it is just used to identify - * the application and the display. */ - CONST char *name) /* The name that will be used to - * refer to the interpreter in later - * "send" commands. Must be globally - * unique. */ + Tk_Window tkwin, /* Token for any window in the application to + * be named: it is just used to identify the + * application and the display. */ + CONST char *name) /* The name that will be used to refer to the + * interpreter in later "send" commands. Must + * be globally unique. */ { TkWindow *winPtr = (TkWindow *) tkwin; Tcl_Interp *interp = winPtr->mainPtr->interp; @@ -227,9 +221,9 @@ Tk_SetAppName( } /* - * See if the application is already registered; if so, remove its - * current name from the registry. The deletion of the command - * will take care of disposing of this entry. + * See if the application is already registered; if so, remove its current + * name from the registry. The deletion of the command will take care of + * disposing of this entry. */ for (riPtr = interpListPtr, prevPtr = NULL; riPtr != NULL; @@ -245,10 +239,9 @@ Tk_SetAppName( } /* - * Pick a name to use for the application. Use "name" if it's not - * already in use. Otherwise add a suffix such as " #2", trying - * larger and larger numbers until we eventually find one that is - * unique. + * Pick a name to use for the application. Use "name" if it's not already + * in use. Otherwise add a suffix such as " #2", trying larger and larger + * numbers until we eventually find one that is unique. */ actualName = name; @@ -299,8 +292,7 @@ Tk_SetAppName( * TODO: DeleteProc */ - Tcl_CreateObjCommand(interp, "send", Tk_SendObjCmd, - (ClientData) riPtr, NULL); + Tcl_CreateObjCommand(interp, "send", Tk_SendObjCmd, riPtr, NULL); if (Tcl_IsSafe(interp)) { Tcl_HideCommand(interp, "send", "send"); } @@ -314,8 +306,8 @@ Tk_SetAppName( * * Tk_SendObjCmd -- * - * This procedure is invoked to process the "send" Tcl command. - * See the user documentation for details on what it does. + * This procedure is invoked to process the "send" Tcl command. See the + * user documentation for details on what it does. * * Results: * A standard Tcl result. @@ -373,11 +365,10 @@ Tk_SendObjCmd( resultPtr = Tcl_GetObjResult(interp); /* - * See if the target interpreter is local. If so, execute - * the command directly without going through the DDE server. - * The only tricky thing is passing the result from the target - * interpreter to the invoking interpreter. Watch out: they - * could be the same! + * See if the target interpreter is local. If so, execute the command + * directly without going through the DDE server. The only tricky thing is + * passing the result from the target interpreter to the invoking + * interpreter. Watch out: they could be the same! */ for (riPtr = interpListPtr; (riPtr != NULL) @@ -385,29 +376,29 @@ Tk_SendObjCmd( /* * Empty loop body. */ - } if (riPtr != NULL) { /* - * This command is to a local interp. No need to go through - * the server. + * This command is to a local interp. No need to go through the + * server. */ Tcl_Interp *localInterp; - Tcl_Preserve((ClientData) riPtr); + Tcl_Preserve(riPtr); localInterp = riPtr->interp; - Tcl_Preserve((ClientData) localInterp); + Tcl_Preserve(localInterp); if (firstArg == (objc - 1)) { /* - * This might be one of those cases where the new - * parser is faster. + * This might be one of those cases where the new parser is + * faster. */ - result = Tcl_EvalObjEx(localInterp, objv[firstArg], TCL_EVAL_DIRECT); + result = Tcl_EvalObjEx(localInterp, objv[firstArg], + TCL_EVAL_DIRECT); } else { - listObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); + listObjPtr = Tcl_NewListObj(0, NULL); for (i = firstArg; i < objc; i++) { Tcl_ListObjAppendList(interp, listObjPtr, objv[i]); } @@ -423,9 +414,9 @@ Tk_SendObjCmd( * An error occurred, so transfer error information from the * destination interpreter back to our interpreter. Must clear * interp's result before calling Tcl_AddErrorInfo, since - * Tcl_AddErrorInfo will store the interp's result in errorInfo - * before appending riPtr's $errorInfo; we've already got - * everything we need in riPtr's $errorInfo. + * Tcl_AddErrorInfo will store the interp's result in + * errorInfo before appending riPtr's $errorInfo; we've + * already got everything we need in riPtr's $errorInfo. */ Tcl_ResetResult(interp); @@ -437,12 +428,12 @@ Tk_SendObjCmd( } Tcl_SetObjResult(interp, Tcl_GetObjResult(localInterp)); } - Tcl_Release((ClientData) riPtr); - Tcl_Release((ClientData) localInterp); + Tcl_Release(riPtr); + Tcl_Release(localInterp); } else { /* - * TODO: This is a non-local request. Send the script to the server and - * poll it for a result. + * TODO: This is a non-local request. Send the script to the server + * and poll it for a result. */ } @@ -454,15 +445,14 @@ Tk_SendObjCmd( * * TkGetInterpNames -- * - * This procedure is invoked to fetch a list of all the - * interpreter names currently registered for the display - * of a particular window. + * This procedure is invoked to fetch a list of all the interpreter names + * currently registered for the display of a particular window. * * Results: - * A standard Tcl return value. Interp->result will be set - * to hold a list of all the interpreter names defined for - * tkwin's display. If an error occurs, then TCL_ERROR - * is returned and interp->result will hold an error message. + * A standard Tcl return value. Interp->result will be set to hold a list + * of all the interpreter names defined for tkwin's display. If an error + * occurs, then TCL_ERROR is returned and interp->result will hold an + * error message. * * Side effects: * None. @@ -473,13 +463,13 @@ Tk_SendObjCmd( int TkGetInterpNames( Tcl_Interp *interp, /* Interpreter for returning a result. */ - Tk_Window tkwin) /* Window whose display is to be used - * for the lookup. */ + Tk_Window tkwin) /* Window whose display is to be used for the + * lookup. */ { Tcl_Obj *listObjPtr; RegisteredInterp *riPtr; - listObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); + listObjPtr = Tcl_NewListObj(0, NULL); riPtr = interpListPtr; while (riPtr != NULL) { Tcl_ListObjAppendElement(interp, listObjPtr, @@ -496,9 +486,8 @@ TkGetInterpNames( * * SendInit -- * - * This procedure is called to initialize the - * communication channels for sending commands and - * receiving results. + * This procedure is called to initialize the communication channels for + * sending commands and receiving results. * * Results: * None. @@ -511,8 +500,8 @@ TkGetInterpNames( static int SendInit( - Tcl_Interp *interp) /* Interpreter to use for error reporting - * (no errors are ever returned, but the + Tcl_Interp *interp) /* Interpreter to use for error reporting (no + * errors are ever returned, but the * interpreter is needed anyway). */ { return TCL_OK; |