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|
/*****
** ** Module Header ******************************************************* **
** **
** Modules Revision 3.0 **
** Providing a flexible user environment **
** **
** File: cmdConflict.c **
** First Edition: 1991/10/23 **
** **
** Authors: John Furlan, jlf@behere.com **
** Jens Hamisch, jens@Strawberry.COM **
** **
** Description: The Tcl conflict and prereq commands. **
** **
** Exports: cmdConflict **
** cmdPrereq **
** **
** Notes: **
** **
** ************************************************************************ **
****/
/** ** Copyright *********************************************************** **
** **
** Copyright 1991-1994 by John L. Furlan. **
** see LICENSE.GPL, which must be provided, for details **
** **
** ************************************************************************ **/
static char Id[] = "@(#)$Id: cmdConflict.c,v 1.9.20.2 2011/10/06 21:33:39 rkowen Exp $";
static void *UseId[] = { &UseId, Id };
/** ************************************************************************ **/
/** HEADERS **/
/** ************************************************************************ **/
#include "modules_def.h"
/** ************************************************************************ **/
/** LOCAL DATATYPES **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** CONSTANTS **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** MACROS **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** LOCAL DATA **/
/** ************************************************************************ **/
static char error_module[ MOD_BUFSIZE];
static char module_name[] = "cmdConflict.c"; /** File name of this module **/
#if WITH_DEBUGGING_UTIL
static char _proc_checkConflict[] = "checkConflict";
#endif
#if WITH_DEBUGGING_CALLBACK
static char _proc_cmdConflict[] = "cmdConflict";
static char _proc_cmdPrereq[] = "cmdPrereq";
#endif
/** ************************************************************************ **/
/** PROTOTYPES **/
/** ************************************************************************ **/
/** not applicable **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: checkConflict **
** **
** Description: Check whether the 'g_current_module' is in the list **
** of passed modules **
** **
** First Edition: 1991/10/23 **
** **
** Parameters: Tcl_Interp *interp According Tcl interp.**
** char *path Modulepath to be chk.**
** char **modulelist List of loaded mod. **
** int nummodules Number of loaded mod.**
** **
** Result: int TCL_OK Successful completion **
** TCL_ERROR Any error **
** **
** Attached Globals: g_flags These are set up accordingly before **
** this function is called in order to **
** control everything **
** **
** g_current_module Module to check for **
** **
** ************************************************************************ **
++++*/
static int checkConflict( Tcl_Interp *interp,
char *path,
char **modulelist,
unsigned int nummodules)
{
char **new_modulelist;
int new_nummodules, k;
struct stat stat_info;
char *buffer;
#if WITH_DEBUGGING_UTIL
ErrorLogger( NO_ERR_START, LOC, _proc_checkConflict, NULL);
#endif
memset( error_module, '\0', MOD_BUFSIZE);
/**
** Check all modules passed to me as parameter
** At first clarify if they really so exist ...
**/
for( k=0; k<nummodules; k++) {
if ((char *) NULL == (buffer = stringer(NULL,0,
path,"/", modulelist[k], NULL)))
if( OK != ErrorLogger( ERR_STRING, LOC,NULL))
goto unwind0;
if( stat( buffer, &stat_info) < 0) {
if( OK != ErrorLogger( ERR_FILEINDIR,LOC,modulelist[k], path,NULL))
if ((char *) NULL == stringer(error_module,MOD_BUFSIZE,
modulelist[k], NULL))
if( OK != ErrorLogger( ERR_STRING, LOC,NULL))
goto unwind1;
goto unwind1;
}
/**
** Is it a directory what has been passed? If it is, list the
** according directory and call myself recursively in order to
**/
if( S_ISDIR( stat_info.st_mode)) {
if( NULL == (new_modulelist = SortedDirList( interp, path,
modulelist[k], &new_nummodules)))
continue;
if( TCL_ERROR == checkConflict( interp, path, new_modulelist,
new_nummodules)) {
FreeList( new_modulelist, new_nummodules);
goto unwind1;
}
FreeList( new_modulelist, new_nummodules);
/**
** If it isn't a directory, check the current one for to be the
** required module file
**/
} else {
if( IsLoaded_ExactMatch( interp, modulelist[k], NULL, NULL) &&
strcmp( g_current_module, modulelist[k])) {
/**
** Save the name of the offending module in a buffer
** for reporting purposes when we get back to the top.
**/
if ((char *) NULL == stringer(error_module,MOD_BUFSIZE,
modulelist[k], NULL))
if( OK != ErrorLogger( ERR_STRING, LOC,NULL))
goto unwind1;
goto unwind1;
}
} /** if( directory) **/
} /** for **/
#if WITH_DEBUGGING_UTIL
ErrorLogger( NO_ERR_END, LOC, _proc_checkConflict, NULL);
#endif
/**
** free resources
**/
null_free((void *) &buffer);
return( TCL_OK); /** -------- EXIT (SUCCESS) -------> **/
unwind1:
null_free((void *) &buffer);
unwind0:
return( TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
} /** End of 'checkConflict' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: cmdConflict **
** **
** Description: Callback function for 'confilct' **
** **
** First Edition: 1991/10/23 **
** **
** Parameters: ClientData client_data **
** Tcl_Interp *interp According Tcl interp.**
** int argc Number of arguments **
** char *argv[] Argument array **
** **
** Result: int TCL_OK Successful completion **
** TCL_ERROR Any error **
** **
** Attached Globals: g_flags These are set up accordingly before **
** this function is called in order to **
** control everything **
** **
** ************************************************************************ **
++++*/
int cmdConflict( ClientData client_data,
Tcl_Interp *interp,
int argc,
CONST84 char *argv[])
{
char **pathlist, /** List of module-pathes **/
**modulelist; /** List of modules **/
char *modulepath; /** Contents of MODULEPATH **/
int i, j, /** Loop counters **/
numpaths, nummodules;/** Size of the according arrays **/
#if WITH_DEBUGGING_CALLBACK
ErrorLogger( NO_ERR_START, LOC, _proc_cmdConflict, NULL);
#endif
/**
** Whatis mode
**/
if( g_flags & (M_WHATIS | M_HELP))
goto success0;
/**
** Check the parameters. Usage is 'conflict <module> [<module> ...]'
**/
if( argc < 2)
if( OK != ErrorLogger( ERR_USAGE, LOC, argv[0],
"conflicting-modulefiles", NULL))
goto unwind0;
/**
** There will be no conflicts in case of switch or unload
**/
if( g_flags & (M_REMOVE | M_SWITCH))
goto success0;
/**
** Load the MODULEPATH and split it into a list of paths. Assume success
** if no list to be built...
**/
if((char *) NULL == (modulepath = xgetenv( "MODULEPATH")))
if( OK != ErrorLogger( ERR_MODULE_PATH, LOC, NULL))
goto unwind0;
if((char **) NULL==(pathlist=SplitIntoList(interp, modulepath, &numpaths,
_colon)))
goto success1;
/**
** Non-persist mode?
**/
if (g_flags & M_NONPERSIST) {
return (TCL_OK);
}
/**
** Display?
**/
if( g_flags & M_DISPLAY) {
fprintf( stderr, "%s\t ", argv[ 0]);
while( --argc)
fprintf( stderr, "%s ", *++argv);
fprintf( stderr, "\n");
goto success2;
}
/**
** Now check/display all passed modules ...
**/
for( i=1; i<argc && argv[i]; i++) {
for( j = 0; j < numpaths; j++) {
if((char **)NULL == (modulelist = SortedDirList(interp,
pathlist[j], (char *) argv[i], &nummodules)))
continue; /** not browseable **/
/**
** Actually checking for conflicts is done here
**/
if( TCL_ERROR == checkConflict( interp, pathlist[j], modulelist,
nummodules))
if( OK != ErrorLogger( ERR_CONFLICT, LOC, g_current_module,
error_module, NULL)) {
FreeList( modulelist, nummodules);
goto unwind2;
}
/**
** Free the list of modules used in the loops body above.
**/
FreeList( modulelist, nummodules);
} /** for( j) **/
} /** for( i) **/
#if WITH_DEBUGGING_CALLBACK
ErrorLogger( NO_ERR_END, LOC, _proc_cmdConflict, NULL);
#endif
/**
** free resources
**/
success2:
FreeList( pathlist, numpaths);
success1:
null_free((void *) &modulepath);
success0:
return( TCL_OK); /** -------- EXIT (SUCCESS) -------> **/
unwind2:
FreeList( pathlist, numpaths);
unwind1:
null_free((void *) &modulepath);
unwind0:
return( TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
} /** End of 'cmdConflict' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: cmdPrereq **
** **
** Description: Callback function for 'prereq' **
** **
** First Edition: 1991/10/23 **
** **
** Parameters: ClientData client_data **
** Tcl_Interp *interp According Tcl interp.**
** int argc Number of arguments **
** char *argv[] Argument array **
** **
** Result: int TCL_OK Successful completion **
** TCL_ERROR Any error **
** **
** Attached Globals: g_flags These are set up accordingly before **
** this function is called in order to **
** control everything **
** **
** ************************************************************************ **
++++*/
int cmdPrereq( ClientData client_data,
Tcl_Interp *interp,
int argc,
CONST84 char *argv[])
{
char ***savedlists = (char ***) NULL;
int *savedlens = (int *) NULL;
char **pathlist,
**modulelist,
*modulepath,
*notloaded_flag = (char *) argv[1];
int i, j, k, numpaths, nummodules, listcnt = 0,
Result = TCL_OK;
char buffer[ MOD_BUFSIZE];
#if WITH_DEBUGGING_CALLBACK
ErrorLogger( NO_ERR_START, LOC, _proc_cmdPrereq, NULL);
#endif
/**
** Parameter check. Usage is 'prereq <module> [<module> ...]'
**/
if( argc < 2)
if( OK != ErrorLogger( ERR_USAGE, LOC, argv[0],
" prerequisite-modules", NULL))
goto unwind0;
/**
** There's no prerequisite check in case of removal
**/
if( g_flags & (M_REMOVE | M_WHATIS))
goto success0;
/**
** Non-persist mode?
**/
if (g_flags & M_NONPERSIST) {
return (TCL_OK);
}
/**
** Display mode
**/
if( g_flags & M_DISPLAY) {
fprintf( stderr, "%s\t ", argv[ 0]);
while( --argc)
fprintf( stderr, "%s ", *++argv);
fprintf( stderr, "\n");
goto success0;
}
/**
** Load the MODULEPATH and split it into a list of paths. Assume success
** if no list to be built...
**/
if((char *) NULL == (modulepath = xgetenv( "MODULEPATH")))
if( OK != ErrorLogger( ERR_MODULE_PATH, LOC, NULL))
goto unwind0;
#if WITH_DEBUGGING_CALLBACK_1
ErrorLogger( NO_ERR_DEBUG, LOC, "Got modulepath: '", modulepath, "'", NULL);
#endif
if((char **) NULL==(pathlist=SplitIntoList(interp, modulepath, &numpaths,
_colon)))
goto success1;
/**
** Allocate memory for the lists of conflict modules
**/
if((char ***) NULL==(savedlists=(char***) module_malloc(numpaths * (argc-1)
* sizeof(char**))))
if( OK != ErrorLogger( ERR_ALLOC, LOC, NULL))
goto unwind1;
if((int *) NULL == (savedlens = (int*) module_malloc(numpaths * (argc-1)
* sizeof( int))))
if( OK != ErrorLogger( ERR_ALLOC, LOC, NULL))
goto unwind2;
/**
** Check/Display all passed modules
**/
#if WITH_DEBUGGING_CALLBACK_1
ErrorLogger( NO_ERR_DEBUG, LOC, "Scanning all ", (sprintf( buffer, "%d",
numpaths), buffer), "modulepaths", NULL);
#endif
for( i=1; i<argc && argv[i] && notloaded_flag; i++) {
for( j = 0; j < numpaths && notloaded_flag; j++) {
if((char **) NULL == (modulelist = SortedDirList(interp,pathlist[j],
(char *) argv[i], &nummodules)))
continue;
/**
** save the list of file to be printed in case of missing pre-
** requisites or
**/
#if WITH_DEBUGGING_CALLBACK_1
ErrorLogger( NO_ERR_DEBUG, LOC, "Save directory list. # = ",
(sprintf( buffer, "%d", listcnt), buffer), NULL);
#endif
savedlens[ listcnt] = nummodules;
savedlists[ listcnt++] = modulelist;
/**
** Now actually check if the prerequisites are fullfilled
** The notloaded_flag controls the exit from both loops in case
** a prerequisite is missing.
**/
for( k=0; k < nummodules && notloaded_flag; k++) {
if( !IsLoaded( interp, modulelist[k], NULL, NULL)) {
notloaded_flag = (char *) argv[i];
} else {
notloaded_flag = NULL;
}
}
} /** for( j) **/
} /** for( i) **/
#if WITH_DEBUGGING_CALLBACK_1
ErrorLogger( NO_ERR_DEBUG, LOC, "Done. Missing prerequisite: '",
(notloaded_flag ? notloaded_flag : "none"), "'", NULL);
#endif
/**
** Display an error message if this was *NOT* display mode and a
** missing prerequisite has been found
**/
if( notloaded_flag) {
/**
** Add the whole list of prerequired module files to the Tcl result
** string
**/
for( k=0; k<listcnt; k++) {
char **listptr = savedlists[k];
*buffer = '\0';
for( i=0; listptr && i<savedlens[k]; i++, listptr++) {
if ((char *) NULL == stringer(
buffer + strlen(buffer), MOD_BUFSIZE-strlen(buffer),
*listptr, " ", NULL))
if( OK != ErrorLogger( ERR_STRING, LOC,NULL)) {
FreeList( savedlists[k], savedlens[k]);
goto unwind2;
}
}
FreeList( savedlists[k], savedlens[k]);
}
buffer[strlen(buffer)-1] = '\0'; /* remove last blank */
if( OK != ErrorLogger( ERR_PREREQ, LOC, g_current_module, buffer, NULL))
Result = TCL_ERROR;
} else {
/**
** We have to free the saved module names again
**/
for( k=0; k<listcnt; k++)
FreeList( savedlists[k], savedlens[k]);
}
/**
** Free up the list of prerequisites and return ...
**/
null_free((void *) &savedlens);
null_free((void *) &savedlists);
#if WITH_DEBUGGING_CALLBACK
ErrorLogger( NO_ERR_END, LOC, _proc_cmdPrereq, NULL);
#endif
success1:
null_free((void *) &modulepath);
success0:
return( Result); /** -------- EXIT (Result) -------> **/
unwind3:
null_free((void *) &savedlens);
unwind2:
null_free((void *) &savedlists);
unwind1:
null_free((void *) &modulepath);
unwind0:
return( TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
} /** End of 'cmdPrereq' **/
|