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Diffstat (limited to 'contrib/awk/ext.c')
| -rw-r--r-- | contrib/awk/ext.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/contrib/awk/ext.c b/contrib/awk/ext.c deleted file mode 100644 index 1ed7e2d..0000000 --- a/contrib/awk/ext.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * ext.c - Builtin function that links external gawk functions and related - * utilities. - * - * Christos Zoulas, Thu Jun 29 17:40:41 EDT 1995 - * Arnold Robbins, update for 3.1, Mon Nov 23 12:53:39 EST 1998 - */ - -/* - * Copyright (C) 1995 - 2001 the Free Software Foundation, Inc. - * - * This file is part of GAWK, the GNU implementation of the - * AWK Programming Language. - * - * GAWK is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GAWK is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include "awk.h" - -#ifdef DYNAMIC - -#include <dlfcn.h> - -#ifdef __GNUC__ -static unsigned long long dummy; /* fake out gcc for dynamic loading? */ -#endif - -extern int errcount; - -/* do_ext --- load an extension */ - -NODE * -do_ext(NODE *tree) -{ - NODE *obj; - NODE *fun; - NODE *(*func) P((NODE *, void *)); - void *dl; - int flags = RTLD_LAZY; - -#ifdef __GNUC__ - AWKNUM junk; - - junk = (AWKNUM) dummy; -#endif - - if (do_lint) - lintwarn(_("`extension' is a gawk extension")); - - if (do_traditional || do_posix) { - errcount++; - error(_("`extension' is a gawk extension")); - } - - obj = tree_eval(tree->lnode); - force_string(obj); - -#ifdef RTLD_GLOBAL - flags |= RTLD_GLOBAL; -#endif - if ((dl = dlopen(obj->stptr, flags)) == NULL) - fatal(_("extension: cannot open `%s' (%s)\n"), obj->stptr, - dlerror()); - - fun = tree_eval(tree->rnode->lnode); - force_string(fun); - - func = (NODE *(*) P((NODE *, void *))) dlsym(dl, fun->stptr); - if (func == NULL) - fatal(_("extension: library `%s': cannot call function `%s' (%s)\n"), - obj->stptr, fun->stptr, dlerror()); - free_temp(obj); - free_temp(fun); - - return (*func)(tree, dl); -} - -/* make_builtin --- register name to be called as func with a builtin body */ - -void -make_builtin(char *name, NODE *(*func) P((NODE *)), int count) -{ - NODE *p, *b, *f; - char **vnames, *parm_names, *sp; - char buf[200]; - int space_needed, i; - - /* count parameters, create artificial list of param names */ - space_needed = 0; - for (i = 0; i < count; i++) { - sprintf(buf, "p%d", i); - space_needed += strlen(buf) + 1; - } - emalloc(parm_names, char *, space_needed, "make_builtin"); - emalloc(vnames, char **, count * sizeof(char *), "make_builtin"); - sp = parm_names; - for (i = 0; i < count; i++) { - sprintf(sp, "p%d",i); - vnames[i] = sp; - sp += strlen(sp) + 1; - } - - getnode(p); - p->type = Node_param_list; - p->rnode = NULL; - p->param = name; - p->param_cnt = count; -#if 0 - /* setting these blows away the param_cnt. dang unions! */ - p->source_line = __LINE__; - p->source_file = __FILE__; -#endif - - getnode(b); - b->type = Node_builtin; - b->proc = func; - b->subnode = p; - b->source_line = __LINE__; - b->source_file = __FILE__; - - f = node(p, Node_func, b); - f->parmlist = vnames; - install(name, f); -} - -/* get_argument --- Get the n'th argument of a dynamically linked function */ - -NODE * -get_argument(NODE *tree, int i) -{ - extern NODE **stack_ptr; - - if (i < 0 || i >= tree->param_cnt) - return NULL; - - tree = stack_ptr[i]; - if (tree->lnode == Nnull_string) - return NULL; - - if (tree->type == Node_array_ref) - tree = tree->orig_array; - - if (tree->type == Node_var_array) - return tree; - - return tree->lnode; -} - -/* set_value --- set the return value of a dynamically linked function */ - -void -set_value(NODE *tree) -{ - extern NODE *ret_node; - - if (tree) - ret_node = tree; - else - ret_node = Nnull_string; -} -#else - -/* do_ext --- dummy version if extensions not available */ - -NODE * -do_ext(NODE *tree) -{ - char *emsg = _("Operation Not Supported"); - - unref(ERRNO_node->var_value); - ERRNO_node->var_value = make_string(emsg, strlen(emsg)); - return tmp_number((AWKNUM) -1); -} -#endif |
