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cmdVersion.c
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cmdVersion.c
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/*****
** ** Module Header ******************************************************* **
** **
** Modules Revision 3.0 **
** Providing a flexible user environment **
** **
** File: cmdVersion.c **
** First Edition: 1995/12/28 **
** **
** Authors: Jens Hamisch, jens@Strawberry.COM **
** **
** Description: The Tcl module-version routine which provides the **
** definition of symbolic version names and the module- **
** alias command providing the definition of module and **
** version aliases **
** **
** Exports: cmdModuleVersion **
** cmdModuleAlias **
** CleanupVersion **
** AliasLookup **
** ExpandVersions **
** **
** Notes: This module defines the callback functions for the defi- **
** nition of symbolic module names and module aliases. The **
** syntax of the according commands is defined as: **
** **
** Module-Versions: **
** module-version <module>/<version> <name> [ <name> ... ] **
** module-version /<version> <name> [ <name> ... ] **
** module-version <module> <name> [ <name> ... ] **
** module-version <alias> <name> [ <name> ... ] **
** **
** Module-Alias: **
** module-alias <alias> <module>/<version> **
** module-alias <alias> /<version> **
** module-alias <alias> <module> **
** module-alias <alias> <alias> **
** **
** **
** ************************************************************************ **
****/
/** ** Copyright *********************************************************** **
** **
** Copyright 1991-1994 by John L. Furlan. **
** see LICENSE.GPL, which must be provided, for details **
** **
** ************************************************************************ **/
static char Id[] = "@(#)$Id: 438a5547e46b20965c44e72390007b5e9ad8e996 $";
static void *UseId[] = { &UseId, Id };
/** ************************************************************************ **/
/** HEADERS **/
/** ************************************************************************ **/
#include "modules_def.h"
/** ************************************************************************ **/
/** LOCAL DATATYPES **/
/** ************************************************************************ **/
/** ************************************************************************ **/
/** **/
/** The whole thing is handled in memory. The structure is build of module **/
/** and name records. There are 3 types of name records: version, name **/
/** and alias. **/
/** **/
/** | | **/
/** +---+---+<-------------------------------+ +---+---+ **/
/** | module| ------------------------+ | | alias | **/
/** +---+---+ --------+ | | +-------+ **/
/** | ^ +----+----+ | | | **/
/** | +--- | version | +--+--+ | +---+---+ **/
/** | | +----+----+ | name|---+ <-----| alias | **/
/** | | | +--+--+ | +---+---+ **/
/** | | +----+----+ | | | **/
/** | +--- | version |------>+--+--+ | +---+---+ **/
/** | | +----+----+<-+--- | name|---+ | alias | **/
/** | | | | +- +--+--+ | +---+---+ **/
/** | | +----+----+ | | | | | **/
/** | +--- | version | | | +--+--+ | +---+---+ **/
/** | | +----+----+ | | | name|---+ <-----| alias | **/
/** | | | | | +--+--+ | +---+---+ **/
/** | | | | | | **/
/** | | +->+--+--+ | +---+---+ **/
/** +---+---+ +--- | name|---+ | alias | **/
/** | module| +--+--+ | +---+---+ **/
/** +---+---+ | | | **/
/** | **/
/** alphabetic ordered alphabtic ordered **/
/** list of names depending list of aliases **/
/** on a single module file **/
/** **/
/** Each module name points to a list of symbolic names and versions. **/
/** The versions themselves can be symbolic names and therefore are of the **/
/** same record type as the names. **/
/** The name and the version list are alphabetically sorted (even the **/
/** module list is). A version record points to a related name record **/
/** containing a symbolic name for the version. Starting at this record, **/
/** the name records build a queue of symbolic names for the version. **/
/** Both, the version and the name record, do have a backward pointer to **/
/** the module record. **/
/** **/
/** The alias list builds a alphabetic ordered list of defined aliases. **/
/** Each alias record points to the related name record. **/
/** **/
/** ************************************************************************ **/
typedef struct _mod_module {
struct _mod_module *next; /** alphabetic queue **/
struct _mod_name *version; /** version queue **/
struct _mod_name *name; /** name queue **/
char *module; /** the name itself **/
} ModModule;
typedef struct _mod_name {
struct _mod_name *next; /** alphabetic queue **/
struct _mod_name *ptr; /** logical next **/
struct _mod_name *version; /** backwards version pointer **/
struct _mod_module *module; /** related module **/
char *name; /** the name itself **/
} ModName;
/** ************************************************************************ **/
/** CONSTANTS **/
/** ************************************************************************ **/
#define HISTTAB 100
/** ************************************************************************ **/
/** MACROS **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** LOCAL DATA **/
/** ************************************************************************ **/
static char module_name[] = "cmdVersion.c"; /** File name of this module **/
#if WITH_DEBUGGING_CALLBACK
static char _proc_cmdModuleVersion[] = "cmdModuleVersion";
static char _proc_cmdModuleAlias[] = "cmdModuleAlias";
#endif /* WITH_DEBUGGING_CALLBACK */
#if WITH_DEBUGGING_UTIL_2
static char _proc_CleanupVersion[] = "CleanupVersion";
#endif /* WITH_DEBUGGING_UTIL_2 */
#if WITH_DEBUGGING_UTIL_1
static char _proc_AddModule[] = "AddModule";
static char _proc_FindModule[] = "FindModule";
static char _proc_AddName[] = "AddName";
static char _proc_FindName[] = "FindName";
#endif /* WITH_DEBUGGING_UTIL_1 */
/**
** The module and aliases list
**/
static ModModule *modlist = (ModModule *) NULL;
static ModName *aliaslist = (ModName *) NULL;
/** ************************************************************************ **/
/** PROTOTYPES **/
/** ************************************************************************ **/
static void CleanupVersionSub(ModModule *ptr);
static void CleanupName(ModName *ptr);
static ModModule *AddModule(const char *name);
static ModModule *FindModule(const char *name, ModModule **prev);
static ModName *AddName(const char *name, ModName **start, ModModule *module);
static ModName *FindName(const char *name, ModName *start, ModName **prev);
static char *CheckModuleVersion(const char *name);
static char *scan_versions(char *buffer, char *base, ModName *ptr,
ModModule *modptr);
/* cannot go in the header because it needs the ModModule type, and putting
* that type in the header leads to errors: */
extern void CleanupVersion(ModModule *ptr);
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: cmdModuleVersion **
** **
** Description: Callback function for 'version' **
** **
** First Edition: 1995/12/28 **
** **
** 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: modlist List containing all version names **
** g_flags These are set up accordingly before **
** this function is called in order to **
** control everything **
** **
** ************************************************************************ **
++++*/
int cmdModuleVersion(ClientData client_data, Tcl_Interp *interp, int argc,
CONST84 char *argv[])
{
char *version, *module;
ModModule *modptr;
ModName *versptr, *nameptr, *tmp, *ptr;
int i;
#if WITH_DEBUGGING_CALLBACK
ErrorLogger(NO_ERR_START, LOC, _proc_cmdModuleVersion, NULL);
#endif /* WITH_DEBUGGING_CALLBACK */
/**
** Whatis mode?
**/
if (g_flags & M_WHATIS) {
return (TCL_OK); /** ------- EXIT PROCEDURE -------> **/
}
/**
** Parameter check
**/
if (argc < 3) {
if (OK != ErrorLogger(ERR_USAGE, LOC, argv[0], " modulename ",
" symbolic-version [symbolic-version ...] ",
NULL)) {
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
}
if ((char *)NULL == (module = CheckModuleVersion(argv[1]))) {
ErrorLogger(ERR_BADMODNAM, LOC, argv[1], NULL);
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
/**
** Display mode?
**/
if (g_flags & M_DISPLAY) {
fprintf(stderr, "%s\t ", argv[0]);
for((i = 1); (i < argc); i++) {
fprintf(stderr, "%s ", argv[i]);
}
fprintf(stderr, "\n");
}
/**
** get the version from the argument
**/
if ((char *) NULL == (version = strrchr( module, '/'))) {
if (OK != ErrorLogger(ERR_INTERAL, LOC, NULL)) {
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
}
*version++ = '\0';
/**
** Now we have a module and a version.
** Check wheter it exists (cond. create them). Check both, the version
** and the name queue in order to locate the desired version ...
**/
if ((ModModule *)NULL == (modptr = AddModule(module))) {
ErrorLogger(ERR_BADMODNAM, LOC, argv[1], NULL);
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
if ((ModName *)NULL == (ptr = FindName(version, modptr->version, &tmp))) {
if ((ModName *)NULL == (ptr = FindName(version, modptr->name, &tmp))) {
versptr = AddName(version, &modptr->version, modptr);
} else {
versptr = ptr->version;
}
} else {
versptr = ptr;
}
/**
** Check all symbolic names now, and allocate a name record for them:
**/
for ((i = 2); (i < argc); i++) {
if (strcmp(argv[i], _default) &&
FindName(argv[i], modptr->name, &tmp)) {
if (OK != ErrorLogger(ERR_DUP_SYMVERS, LOC, argv[i], NULL)) {
break; /* out of the for-loop */
} else {
continue; /* through the for-loop */
}
}
if ((ModName *)NULL == (nameptr = AddName(argv[i],
&modptr->name,
modptr))) {
if (OK != ErrorLogger(ERR_INTERAL, LOC, NULL)) {
break;
} else {
continue;
}
}
/**
** Concat the new element at the beginning of the name queue ...
**/
nameptr->ptr = versptr->ptr;
versptr->ptr = nameptr;
nameptr->version = versptr;
} /* end for-loop */
#if WITH_DEBUGGING_CALLBACK
ErrorLogger(NO_ERR_END, LOC, _proc_cmdModuleVersion, NULL);
#endif /* WITH_DEBUGGING_CALLBACK */
return (TCL_OK);
} /** End of 'cmdModuleVersion' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: ExpandVersions **
** **
** Description: Callback function for 'version' **
** **
** First Edition: 1995/12/28 **
** **
** Parameters: char *name Name to be expanded **
** **
** Result: char* NULL No symbols found **
** Otherwise Pointer to the list string **
** **
** ************************************************************************ **
++++*/
char *ExpandVersions(char *name)
{
char *version, *module, *s;
static char buffer[BUFSIZ];
ModModule *modptr, *tmp1;
ModName *ptr, *tmp2;
#if WITH_DEBUGGING_CALLBACK
ErrorLogger(NO_ERR_START, LOC, _proc_cmdModuleVersion, NULL);
#endif /* WITH_DEBUGGING_CALLBACK */
/**
** Parameter check:
**/
if ((char *)NULL == (module = CheckModuleVersion(name))) {
return ((char *) NULL); /** -------- EXIT (FAILURE) -------> **/
}
if ((char *)NULL == (version = strrchr(module, '/'))) {
if (OK != ErrorLogger(ERR_INTERAL, LOC, NULL)) {
return ((char *)NULL); /** -------- EXIT (FAILURE) -------> **/
}
}
*version++ = '\0';
/**
** Now we have a module and a version.
** Check whether it exists:
**/
if ((ModModule *)NULL == (modptr = FindModule(module, &tmp1))) {
return ((char *)NULL); /** -------- EXIT (FAILURE) -------> **/
}
if ((ModName *)NULL == (ptr = FindName(version, modptr->version, &tmp2))) {
if ((ModName *)NULL == (ptr = FindName(version, modptr->name, &tmp2))) {
return ((char *)NULL); /** -------- EXIT (FAILURE) -------> **/
}
ptr = ptr->version;
}
if (!ptr->ptr) {
return ((char *)NULL); /** -------- EXIT (FAILURE) -------> **/
}
/**
** Now scan in all the symbolic version names:
**/
*buffer = '\0';
if (s = scan_versions(buffer, buffer, ptr->ptr, modptr)) {
*--s = '\0'; /** remove trailing ':' **/
}
#if WITH_DEBUGGING_CALLBACK
ErrorLogger(NO_ERR_END, LOC, _proc_cmdModuleVersion, NULL);
#endif /* WITH_DEBUGGING_CALLBACK */
return (buffer);
} /** End of 'ExpandVersions' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: scan_versions **
** **
** Description: Scan all symbolic versions pointed to be the passed **
** ModName pointer and print them as a list into the **
** passed buffer. **
** **
** First Edition: 1995/12/28 **
** **
** Parameters: char *buffer Buffer for printing in **
** ModName *ptr Name structure pointer **
** ModModule *modptr Assigned module name **
** **
** Result: char* NULL Nothing printed into the **
** buffer **
** Otherwise Pointer to the end of the **
** string in the buffer **
** **
** ************************************************************************ **
++++*/
static char *scan_versions(char *buffer, char *base, ModName *ptr,
ModModule *modptr)
{
ModName *tmp, *vers;
char *s;
char *mayloop;
/**
** Recursively print the queue of names
**/
if( !ptr)
return((char *) NULL); /** ------ EXIT (END) -----> **/
if( !ptr->name) {
if( OK != ErrorLogger( ERR_INTERAL, LOC, NULL))
return((char *) NULL); /** ---- EXIT (FAILURE) ---> **/
} else {
/**
** Prevent endless loops
** To allow for version names that are substrings of other
** version names, match against "(^|:)name:" not just "name"...
**/
mayloop = strstr( base, ptr->name);
if( mayloop != NULL ) {
if( mayloop == base || *(mayloop-1) == ':' ) {
if( *(mayloop + strlen(ptr->name)) == ':' ) {
if (strcmp(ptr->name,_default))
ErrorLogger( ERR_SYMLOOP, LOC, ptr->name, NULL);
return((char *) NULL); /** ---- EXIT (FAILURE) ---> **/
}
}
}
/**
** Now print ...
**/
/* sprintf( buffer, "%s:", ptr->name); */
strcpy( buffer, ptr->name);
/* if you change this, may affect the loop checker above */
strcat( buffer, ":");
buffer += strlen( buffer);
/**
** Check wheter this is a version name again ...
** This is a recursion, too
**/
if((ModName *) NULL != (vers = FindName(ptr->name, modptr->version,
&tmp))) {
if( s = scan_versions( buffer, base, vers->ptr, modptr))
buffer = s;
}
}
/**
** This is the recursion. Preserve the buffer end pointer
**/
if( s = scan_versions( buffer, base, ptr->ptr, modptr))
buffer = s;
return( buffer);
} /** End of 'scan_versions' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: CheckModuleVersion **
** **
** Description: Reduce the passed module name into a <mod>/<vers> **
** string **
** **
** First Edition: 1995/12/28 **
** **
** Parameters: char *name name to be checked **
** **
** Result: char* NULL any error **
** Otherwise Pointer to a <mod>/<vers> **
** string **
** **
** Attached Globals: modlist List containing all version names **
** aliaslist List containing all alises **
** g_current_module The module which is handled **
** by the current command **
** **
** ************************************************************************ **
++++*/
static char *CheckModuleVersion(const char *name)
{
static char buffer[ BUFSIZ];
char *s, *t;
/**
** Check the first parameter and extract modulename and version
**/
if( '/' == *name) { /** only the version specified **/
/**
** get the module name from the current module ...
**/
if( !g_current_module)
return((char *) NULL);
strcpy( buffer, g_current_module);
if((char *) NULL == (t = strrchr( buffer, '/')))
t = buffer + strlen( buffer);
*t++ = '/';
*t = '\0';
/**
** The version has been specified as a parameter
**/
if( s = strrchr( name, '/')) {
s++;
} else {
ErrorLogger( ERR_INTERAL, LOC, NULL);
return((char *) NULL);
}
strcpy( t, s);
} else { /** Maybe an alias or a module **/
strcpy( buffer, name);
if( !strrchr( buffer, '/')) {
/**
** Check wheter this is an alias ...
**/
if( AliasLookup( buffer, &s, &t)) {
/* sprintf( buffer, "%s/%s", s, t); */
strcpy( buffer, s);
strcat( buffer, "/");
strcat( buffer, t);
} else {
/**
** The default version is being selected
**/
t = buffer + strlen( buffer);
if( '/' != *t)
*t++ = '/';
strcpy( t, _default);
}
}
}
/**
** Pass the buffer reference to the caller
**/
return (buffer);
} /** End of 'CheckModuleVersion' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: cmdModuleAlias **
** **
** Description: Callback function for 'alias' **
** **
** First Edition: 1995/12/28 **
** **
** 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: aliaslist List containing all alises **
** g_flags These are set up accordingly before **
** this function is called in order to **
** control everything **
** **
** ************************************************************************ **
++++*/
int cmdModuleAlias(ClientData client_data, Tcl_Interp *interp, int argc,
CONST84 char *argv[])
{
ModName *tmp, *ptr;
const char *version, *module;
ModName *trg_alias;
ModModule *modptr;
/* not sure if these are the right things to initialize these two as: */
#ifdef PACKAGE
module = PACKAGE;
#endif /* PACKAGE */
#ifdef PACKAGE_VERSION
version = PACKAGE_VERSION;
#endif /* PACKAGE_VERSION */
#if WITH_DEBUGGING_CALLBACK
ErrorLogger(NO_ERR_START, LOC, _proc_cmdModuleAlias, NULL);
#endif /* WITH_DEBUGGING_CALLBACK */
/**
** Parameter check
**/
if (argc != 3) {
if (OK != ErrorLogger(ERR_USAGE, LOC, argv[0], " aliasname ",
"modulename", NULL)) {
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
}
/**
** Whatis mode?
**/
if (g_flags & M_WHATIS) {
return (TCL_OK); /** ------- EXIT PROCEDURE -------> **/
}
if (g_flags & M_DISPLAY) {
fprintf(stderr, "%s\t %s %s\n", argv[0], argv[1], argv[2]);
}
/**
** Check if the target is an alias ...
** Conditionally split up the passed <module>/<version> pair.
**/
trg_alias = FindName(argv[2], aliaslist, &tmp);
if (!trg_alias) {
if ((char *)NULL == (module = CheckModuleVersion(argv[2]))) {
module = argv[2];
}
if ((char *)NULL != (version = strrchr(module, '/'))) {
*(char *)version++ = '\0';
}
}
/**
** Does any alias record exist with this name?
** If one does exist, then we should be finished ...
**/
if (ptr = FindName(argv[1], aliaslist, &tmp)) {
if (!ptr->ptr || !ptr->ptr->name || !trg_alias &&
(!ptr->ptr->module || !ptr->ptr->module->module)) {
ErrorLogger(ERR_INTERAL, LOC, NULL);
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
if (trg_alias && !strcmp(ptr->ptr->name, argv[2]) || !trg_alias &&
!strcmp(ptr->ptr->name, version) &&
!strcmp(ptr->ptr->module->module, module)) {
return (TCL_OK); /** -------- EXIT (SUCCESS) -------> **/
}
if (OK != ErrorLogger(ERR_DUP_ALIAS, LOC, argv[1], NULL)) {
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
} else {
/**
** We have to allocate a new alias entry:
**/
if ((ModName *)NULL == (ptr = AddName(argv[1],
&aliaslist, NULL))) {
ErrorLogger(ERR_INTERAL, LOC, NULL);
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
}
/**
** Now ptr points to the affected module alias record ...
** Conditionally we have to create the module and the version record now.
**/
if (trg_alias) {
ptr->ptr = trg_alias;
} else {
if ((ModModule *)NULL == (modptr = AddModule(module))) {
ErrorLogger(ERR_BADMODNAM, LOC, argv[2], NULL);
ptr->ptr = (ModName *)NULL;
return (TCL_ERROR); /** -------- EXIT (FAILURE) -------> **/
}
ptr->ptr = AddName((version ? version : _default), &modptr->version,
modptr);
}
#if WITH_DEBUGGING_CALLBACK
ErrorLogger(NO_ERR_END, LOC, _proc_cmdModuleAlias, NULL);
#endif /* WITH_DEBUGGING_CALLBACK */
return (TCL_OK);
} /** End of 'cmdModuleAlias' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: AliasLookup **
** **
** Description: Resolves a given alias to a module/version string **
** **
** First Edition: 1995/12/28 **
** **
** Parameters: char *alias Name of the alias to be re- **
** solved **
** char **module Buffer for the module name **
** char **version Buffer for the module version**
** **
** Result: int 1 Success, value in the buffer **
** is valid **
** 0 Any error, or not found **
** **
** Attached Globals: aliaslist List containing all alises **
** **
** ************************************************************************ **
++++*/
int AliasLookup( char *alias,
char **module,
char **version)
{
ModName *ptr, *tmp, *oldptr = NULL;
while( 1) {
/**
** Lokate the alias entry and check intergrity
**/
if((ModName *) NULL == (ptr = FindName( alias, aliaslist, &tmp)))
return( 0); /** ------- EXIT (not found) ------> **/
if( ptr == oldptr || !ptr->ptr || !ptr->ptr->name ) {
ErrorLogger( ERR_INTERAL, LOC, NULL);
return( 0); /** -------- EXIT (FAILURE) -------> **/
}
/**
** Do we have to loop? Another alias has no module reference ...
**/
if( !ptr->ptr->module) {
alias = ptr->ptr->name;
oldptr = ptr;
continue;
}
/**
** Got it. Get the module name and the version from the found
** entry.
** Dereference symbolic module versions
**/
*module = ptr->ptr->module->module;
*version = ptr->ptr->name;
if((ModName *) NULL != (ptr = FindName( *version,
ptr->ptr->module->name, &tmp))) {
if( !ptr->version || !ptr->version->name) {
if( OK != ErrorLogger( ERR_INTERAL, LOC, NULL))
return( 0);
} else
*version = ptr->version->name;
}
break;
} /** while **/
return( 1);
} /** End of 'AliasLookup' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: VersionLookup **
** **
** Description: Resolves a given alias to a module/version string **
** **
** First Edition: 1995/12/28 **
** **
** Parameters: char *alias Name of the alias to be re- **
** solved **
** char **module Buffer for the module name **
** char **version Buffer for the module version**
** **
** Result: int 1 Success, value in the buffer **
** is valid **
** 0 Any error, or not found **
** Attached Globals: g_current_module The module which is handled **
** by the current command **
** **
** ************************************************************************ **
++++*/
int VersionLookup( char *name, char **module, char **version)
{
static char buffer[ BUFSIZ];
ModModule *mptr, *mtmp;
ModName *vptr, *vtmp;
ModName **history;
char *s, *t;
int histsize = 0, histndx = 0, i;
/**
** Check whether this is an alias ...
** BTW: Alias lookups return the FQMN (full qualifed module name ;-)
**/
if( '/' == *name) {
strcpy( buffer, g_current_module);
if( s = strrchr( buffer, '/'))
*s = '\0';
*module = buffer;
*version = name + 1;
} else {
strcpy( buffer, name);
*module = buffer;
if((char *) NULL == (*version = strrchr( buffer, '/'))) {
if( AliasLookup( buffer, &s, &t)) {
*module = s; *version = t;
} else
*version = _default;
} else
*(*version)++ = '\0';
}
/**
** Look up modulename ...
** We call it success, if we do not find a registered name.
** In this case <module>/<version> will be returned as passed.
**/
if ((ModModule *)NULL == (mptr = FindModule(*module, &mtmp))) {
return (1); /** -------- EXIT (SUCCESS) -------> **/
}
/**
** This is for preventing from endless loops:
**/
histsize = HISTTAB;
histndx = 0;
if ((ModName **)NULL == (history = (ModName **)module_malloc((size_t)((unsigned long)histsize * sizeof(ModName *))))) {
ErrorLogger(ERR_ALLOC, LOC, NULL);
return (0); /** -------- EXIT (FAILURE) -------> **/
}
/**
** Now look up the version name. Check symbolic names first. If some-
** thing is found, check if the related version record itself relates
** to a name record ...
**/
while( 1) {
/**
** Check the symbolic names ...
**/
if((ModName *) NULL != (vptr = FindName( *version, mptr->name, &vtmp))){
if( !vptr->version || !vptr->version->name) {
if( OK != ErrorLogger( ERR_INTERAL, LOC, NULL))
*version = (char *) NULL;
break;
}
*version = vptr->version->name;
/**
** Prevent from looping ...
**/
for( i=0; i<histndx; i++) {
if( history[ i] == vptr) { /** That's the loop **/
ErrorLogger( ERR_SYMLOOP, LOC, *version, NULL);
*version = (char *) NULL;
break;
}
}
if (!*version) {
break;
}
if (histndx >= histsize) {
histsize += HISTTAB;
if (!(history = (ModName **)module_realloc(history,
((unsigned long)histsize * sizeof(ModName *))))) {
ErrorLogger(ERR_ALLOC, LOC, NULL);
return (0); /** -------- EXIT (FAILURE) -------> **/
}
}
history[histndx++] = vptr;
} else {
break;
} /** if( FindName) **/
} /** while( 1) **/
/**
** Free the loop preventing list
** If version is NULL now, something went wrong in the lookup loop above
**/
null_free((void *) &history);
return((char *) NULL != *version);
} /** End of 'VersionLookup' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: CleanupVersion **
** **
** Description: Cleanup the version structure **
** **
** First Edition: 1995/12/28 **
** **
** Parameters: - **
** **
** Result: - **
** **
** Attached Globals: modlist List containing all version names **
** aliaslist List containing all alises **
** **
** ************************************************************************ **
++++*/
void CleanupVersion(ModModule *ptr)
{
#if WITH_DEBUGGING_UTIL_2
ErrorLogger(NO_ERR_START, LOC, _proc_CleanupVersion, NULL);
#endif /* WITH_DEBUGGING_UTIL_2 */
CleanupVersionSub(modlist);
modlist = (ModModule *)NULL;
CleanupName(aliaslist);
aliaslist = (ModName *)NULL;
} /** End of 'CleanupVersion' **/
static void CleanupVersionSub( ModModule *ptr)
{
/**
** Recursion
**/