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e816ab15b5
fly, as it were. It's a powerful mechanism for dynamically changing environment variables, aliases, X11 resources, etc. It uses an embedded Tcl intrepretor, with a few extensions. Therefore, it has a well defined language syntax. Version 3.1 is GPL, and includes many improvements over the 3.0beta.
192 lines
5.8 KiB
C
192 lines
5.8 KiB
C
/*****
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** ** Module Header ******************************************************* **
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** **
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** Modules Revision 3.0 **
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** Providing a flexible user environment **
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** **
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** File: ModuleCmd_Display.c **
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** First Edition: 91/10/23 **
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** **
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** Authors: John Furlan, jlf@behere.com **
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** Jens Hamisch, jens@Strawberry.COM **
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** **
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** Description: Displays what changes a modulefile will make to the **
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** environment including any conflics or prerequisits. **
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** **
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** Exports: ModuleCmd_Display **
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** **
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** Notes: **
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** **
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** ************************************************************************ **
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****/
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/** ** Copyright *********************************************************** **
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** **
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** Copyright 1991-1994 by John L. Furlan. **
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** see LICENSE.GPL, which must be provided, for details **
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** **
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** ************************************************************************ **/
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static char Id[] = "@(#)$Id: ModuleCmd_Display.c,v 1.1 2000/06/28 00:17:32 rk Exp $";
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static void *UseId[] = { &UseId, Id };
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/** ************************************************************************ **/
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/** HEADERS **/
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/** ************************************************************************ **/
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#include "modules_def.h"
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/** ************************************************************************ **/
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/** LOCAL DATATYPES **/
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/** ************************************************************************ **/
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/** not applicable **/
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/** ************************************************************************ **/
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/** CONSTANTS **/
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/** ************************************************************************ **/
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/** not applicable **/
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/** ************************************************************************ **/
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/** MACROS **/
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/** ************************************************************************ **/
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/** not applicable **/
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/** ************************************************************************ **/
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/** LOCAL DATA **/
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/** ************************************************************************ **/
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char local_line[] =
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"-------------------------------------------------------------------\n";
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static char module_name[] = "ModuleCmd_Display.c"; /** File name of this module **/
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#if WITH_DEBUGGING_MODULECMD
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static char _proc_ModuleCmd_Display[] = "ModuleCmd_Display";
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#endif
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/** ************************************************************************ **/
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/** PROTOTYPES **/
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/** ************************************************************************ **/
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/** not applicable **/
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/*++++
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** ** Function-Header ***************************************************** **
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** **
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** Function: ModuleCmd_Display **
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** **
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** Description: Execution of the module-command 'display' **
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** Display every change a module 'load' would apply to **
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** the environment **
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** **
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** First Edition: 91/10/23 **
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** **
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** Parameters: Tcl_Interp *interp Attached Tcl Interp. **
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** char *argv[] Argument list **
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** **
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** Result: int TCL_ERROR Failure **
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** TCL_OK Successfull operation **
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** **
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** Attached Globals: specified_module The module name from the **
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** command line. **
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** **
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** ************************************************************************ **
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++++*/
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int ModuleCmd_Display( Tcl_Interp *interp,
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int argc,
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char *argv[])
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{
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Tcl_Interp *disp_interp;
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Tcl_DString cmdbuf;
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int i,
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result;
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char modulefile[ MOD_BUFSIZE];
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char modulename[ MOD_BUFSIZE];
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#if WITH_DEBUGGING_MODULECMD
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ErrorLogger( NO_ERR_START, LOC, _proc_ModuleCmd_Display, NULL);
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#endif
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/**
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** Initialize the command buffer and set up the modules flag to 'display
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** only'
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**/
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Tcl_DStringInit( &cmdbuf);
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flags |= M_DISPLAY;
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/**
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** Handle each passed module file. Create a Tcl interpreter for each
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** module file to be handled and initialize it with custom module commands
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**/
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for(i=0; i<argc && argv[i]; i++) {
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/**
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** Set the name of the module specified on the command line
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**/
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specified_module = argv[i];
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disp_interp = Tcl_CreateInterp();
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if( TCL_OK != (result = InitializeModuleCommands( disp_interp))) {
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Tcl_DeleteInterp( disp_interp);
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return( result); /** -------- EXIT (FAILURE) -------> **/
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}
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/**
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** locate the filename related to the passed module
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**/
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if( Locate_ModuleFile(disp_interp, argv[i], modulename, modulefile) ==
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TCL_ERROR) {
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Tcl_DeleteInterp( disp_interp);
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if( OK != ErrorLogger( ERR_LOCATE, LOC, argv[i], NULL))
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break;
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else
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continue;
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}
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/**
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** Print out everything that would happen if the module file were
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** executed ...
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**/
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current_module = modulename;
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fprintf( stderr, local_line);
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fprintf( stderr, "%s:\n\n", modulefile);
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result = CallModuleProcedure( disp_interp, &cmdbuf, modulefile,
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"ModulesDisplay", 0);
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fprintf( stderr, local_line);
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/**
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** Remove the Tcl interpreter that has been used for printing ...
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**/
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Tcl_DeleteInterp( disp_interp);
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} /** for **/
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/**
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** Leave the 'display only mode', free up what has been used and return
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**/
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flags &= ~M_DISPLAY;
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fprintf( stderr, "\n");
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Tcl_DStringFree( &cmdbuf);
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#if WITH_DEBUGGING_MODULECMD
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ErrorLogger( NO_ERR_END, LOC, _proc_ModuleCmd_Display, NULL);
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#endif
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return( TCL_OK);
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} /** End of 'ModuleCmd_Display' **/
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