daac212ae3
Add initial scripting support. * commands/test.c: New file. * include/grub/script.h: Likewise. * normal/execute.c: Likewise. * normal/function.c: Likewise. * normal/lexer.c: Likewise. * normal/parser.y: Likewise. * normal/script.c: Likewise. * configure.ac: Add `AC_PROG_YACC' test. * conf/i386-pc.rmk (grub_emu_SOURCES): Add `commands/test.c', `normal/execute.c', `normal/lexer.c', `grub_script.tab.c', `normal/function.c' and `normal/script.c'. (normal_mod_SOURCES): `normal/execute.c', `normal/lexer.c', `grub_script.tab.c', `normal/function.c' and `normal/script.c'. (test_mod_SOURCES, test_mod_CFLAGS, test_mod_LDFLAGS): New variables. (pkgdata_MODULES): Add `test.mod'. (grub_script.tab.c): New rule. (grub_script.tab.h): Likewise. * include/grub/err.h (grub_err_t): Add `GRUB_ERR_TEST_FAILURE'. * include/grub/normal.h (grub_test_init): New prototype. (grub_test_fini): Likewise. * normal/command.c: Include <grub/script.h>. (grub_command_execute): Rewritten. * util/grub-emu.c (main): Call `grub_test_init' and `grub_test_fini'.
127 lines
3 KiB
C
127 lines
3 KiB
C
/* script.c */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/misc.h>
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#include <grub/script.h>
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#include <grub/parser.h>
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#include <grub/mm.h>
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static grub_script_function_t grub_script_function_list;
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grub_script_function_t
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grub_script_function_create (char *functionname, struct grub_script *cmd)
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{
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grub_script_function_t func;
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grub_script_function_t *p;
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func = (grub_script_function_t) grub_malloc (sizeof (*func));
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if (! func)
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return 0;
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func->name = grub_strdup (functionname);
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if (! func->name)
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{
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grub_free (func);
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return 0;
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}
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func->func = cmd;
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/* Keep the list sorted for simplicity. */
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p = &grub_script_function_list;
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while (*p)
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{
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if (grub_strcmp ((*p)->name, functionname) >= 0)
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break;
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p = &((*p)->next);
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}
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/* If the function already exists, overwrite the old function. */
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if (*p && grub_strcmp ((*p)->name, functionname) == 0)
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{
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grub_script_function_t q;
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q = *p;
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grub_script_free (q->func);
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q->func = cmd;
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grub_free (func);
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func = q;
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}
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else
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{
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func->next = *p;
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*p = func;
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}
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return func;
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}
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void
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grub_script_function_remove (const char *name)
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{
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grub_script_function_t *p, q;
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for (p = &grub_script_function_list, q = *p; q; p = &(q->next), q = q->next)
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if (grub_strcmp (name, q->name) == 0)
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{
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*p = q->next;
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grub_free (q->name);
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grub_script_free (q->func);
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grub_free (q);
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break;
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}
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}
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grub_script_function_t
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grub_script_function_find (char *functionname)
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{
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grub_script_function_t func;
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for (func = grub_script_function_list; func; func = func->next)
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if (grub_strcmp (functionname, func->name) == 0)
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break;
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if (! func)
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grub_error (GRUB_ERR_UNKNOWN_COMMAND, "unknown command `%s'", functionname);
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return func;
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}
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int
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grub_script_function_iterate (int (*iterate) (grub_script_function_t))
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{
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grub_script_function_t func;
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for (func = grub_script_function_list; func; func = func->next)
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if (iterate (func))
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return 1;
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return 0;
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}
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int
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grub_script_function_call (grub_script_function_t func,
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int argc __attribute__((unused)),
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char **args __attribute__((unused)))
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{
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/* XXX: Arguments are not supported yet. */
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return grub_script_execute (func->func);
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}
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