int SLrline_init (SLFUTURE_CONST char *appname, SLFUTURE_CONST char *user_initfile, SLFUTURE_CONST char *sys_initfile)
{
#ifdef __WIN32__
char *home_dir = getenv ("USERPROFILE");
#else
# ifdef VMS
char *home_dir = "SYS$LOGIN:"******"HOME");
# endif
#endif
char *file = NULL;
int status;
static char *appname_malloced;
if (sys_initfile == NULL)
sys_initfile = SLRLINE_SYS_INIT_FILE;
if (user_initfile == NULL)
user_initfile = SLRLINE_USER_INIT_FILE;
if (appname == NULL)
appname = "Unknown";
if (NULL == (appname_malloced = SLmake_string (appname)))
return -1;
if (-1 == SLadd_intrinsic_variable ("__RL_APP__", &appname_malloced, SLANG_STRING_TYPE, 1))
return -1;
if (-1 == SLadd_intrin_fun_table (Intrinsics, NULL))
return -1;
if (-1 == init_keymap ())
return -1;
if (user_initfile != NULL)
{
file = SLpath_find_file_in_path (home_dir, user_initfile);
if (file != NULL)
{
status = SLns_load_file (file, NULL);
SLfree (file);
return status;
}
}
if (sys_initfile != NULL)
{
file = _pSLpath_find_file (sys_initfile, 0);
if (file != NULL)
{
status = SLns_load_file (file, NULL);
SLang_free_slstring (file);
return status;
}
}
return 0;
}
static void find_file_in_path (char *path, char *name) /*{{{*/
{
char *pathname;
pathname = SLpath_find_file_in_path (path, name);
(void) SLang_push_string (pathname);
SLfree(pathname);
}
/* returns SLmalloced string */
static char *find_file (SLFUTURE_CONST char *path, SLFUTURE_CONST char *file)
{
char *dirfile;
char *extname;
char *filebuf;
char *filesl, *fileslc;
unsigned int len;
if (NULL != (dirfile = SLpath_find_file_in_path (path, file)))
return dirfile;
/* Not found, or an error occured. */
if (_pSLang_Error)
return NULL;
extname = SLpath_extname (file);
if (*extname != 0)
return NULL;
/* No extension. So look for .slc and .sl forms */
len = (extname - file);
filebuf = SLmalloc (len + 5);
strcpy (filebuf, file);
strcpy (filebuf + len, ".sl");
filesl = SLpath_find_file_in_path (path, filebuf);
if ((filesl == NULL) && _pSLang_Error)
{
SLfree (filebuf);
return NULL;
}
strcpy (filebuf + len, ".slc");
fileslc = SLpath_find_file_in_path (path, filebuf);
SLfree (filebuf);
dirfile = more_recent (filesl, fileslc);
if (dirfile != filesl)
SLfree (filesl);
if (dirfile != fileslc)
SLfree (fileslc);
return dirfile;
}
static Handle_Type *dynamic_link_module (SLFUTURE_CONST char *module)
{
Handle_Type *h;
VOID_STAR handle;
SLFUTURE_CONST char *err;
char filebuf[1024];
char *save_file;
char *save_err;
int api_version;
int *api_version_ptr;
#define MAX_MODULE_NAME_SIZE 256
char module_so[MAX_MODULE_NAME_SIZE + 32];
char *module_name;
char *file, *pathfile;
if (strlen (module) >= MAX_MODULE_NAME_SIZE)
{
_pSLang_verror (SL_LimitExceeded_Error, "module name too long");
return NULL;
}
SLsnprintf (module_so, sizeof(module_so), "%s-module.%s", module, SO_SUFFIX);
if (Module_Path != NULL)
pathfile = SLpath_find_file_in_path (Module_Path, module_so);
else pathfile = NULL;
if ((pathfile == NULL)
&& (NULL != (pathfile = _pSLsecure_getenv (MODULE_PATH_ENV_NAME))))
pathfile = SLpath_find_file_in_path (pathfile, module_so);
if (pathfile == NULL)
pathfile = SLpath_find_file_in_path (MODULE_INSTALL_DIR, module_so);
if (pathfile != NULL)
file = pathfile;
else
file = module_so;
save_err = NULL;
save_file = file;
while (1)
{
#ifndef RTLD_GLOBAL
# define RTLD_GLOBAL 0
#endif
#ifdef RTLD_NOW
handle = (VOID_STAR) dlopen (file, RTLD_NOW | RTLD_GLOBAL);
#else
handle = (VOID_STAR) dlopen (file, RTLD_LAZY | RTLD_GLOBAL);
#endif
if (handle != NULL)
{
if (_pSLang_Load_File_Verbose & SLANG_LOAD_MODULE_VERBOSE)
SLang_vmessage ("Importing %s", file);
if (save_err != NULL)
SLfree (save_err);
break;
}
/* Purify reports that dlerror returns a pointer that generates UMR
* errors. There is nothing that I can do about that....
*/
if ((NULL == strchr (file, '/'))
&& (strlen(file) < sizeof(filebuf)))
{
err = (char *) dlerror ();
if (err != NULL)
save_err = SLmake_string (err);
SLsnprintf (filebuf, sizeof (filebuf), "./%s", file);
file = filebuf;
continue;
}
if ((NULL == (err = save_err))
&& (NULL == (err = (char *) dlerror ())))
err = "UNKNOWN";
_pSLang_verror (SL_Import_Error,
"Error linking to %s: %s", save_file, err);
if (save_err != NULL)
SLfree (save_err);
if (pathfile != NULL)
SLfree (pathfile);
return NULL;
}
/* Using SLpath_basename allows, e.g., import ("/path/to/module"); */
module_name = SLpath_basename (module);
api_version_ptr = (int *) do_dlsym (handle, file, 0, "SLmodule_%s_api_version", module_name);
if (api_version_ptr == NULL)
api_version_ptr = (int *) do_dlsym (handle, file, 0, "_SLmodule_%s_api_version", module_name);
if (api_version_ptr == NULL)
api_version = 0;
else
api_version = *api_version_ptr;
if ((-1 == check_api_version (file, api_version))
|| (NULL == (h = allocate_handle_type (module, handle))))
{
SLfree (pathfile); /* NULL ok */
dlclose (handle);
return NULL;
}
if (NULL == (h->ns_init_fun = (int (*)(SLCONST char *)) do_dlsym (handle, file, 1, "init_%s_module_ns", module_name)))
{
SLfree (pathfile);
free_handle_type (h);
dlclose (handle);
return NULL;
}
h->deinit_fun = (void (*)(void)) do_dlsym (handle, file, 0, "deinit_%s_module", module_name);
SLfree (pathfile); /* NULL ok */
h->next = Handle_List;
Handle_List = h;
return h;
}
