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@@ -0,0 +1,97 @@
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+
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+/*
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+ * Copyright (C) 2001-2003 Hewlett-Packard Co.
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+ * Contributed by Stephane Eranian <eranian@hpl.hp.com>
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+ *
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+ * Copyright (C) 2001 Silicon Graphics, Inc.
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+ * Contributed by Brent Casavant <bcasavan@sgi.com>
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+ *
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+ * Copyright (C) 2006-2009 Intel Corporation
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+ * Contributed by Fenghua Yu <fenghua.yu@intel.com>
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+ * Contributed by Bibo Mao <bibo.mao@intel.com>
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+ * Contributed by Chandramouli Narayanan <mouli@linux.intel.com>
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+ *
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+ * This file is part of the ELILO, the EFI Linux boot loader.
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+ *
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+ * ELILO 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, or (at your option)
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+ * any later version.
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+ *
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+ * ELILO 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 ELILO; see the file COPYING. If not, write to the Free
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+ * Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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+ * 02111-1307, USA.
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+ *
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+ * Please check out the elilo.txt for complete documentation on how
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+ * to use this program.
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+ */
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+
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+
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+#include <efi.h>
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+#include <efilib.h>
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+#include <argify.h>
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+
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+
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+
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+#define MAX_ARGS 256
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+
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+#define CHAR_SPACE L' '
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+
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+#define DEBUG 0
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+
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+INTN
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+argify(CHAR16 *buf, UINTN len, CHAR16 **argv)
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+{
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+
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+ UINTN i=0, j=0;
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+ CHAR16 *p = buf;
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+
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+ if (buf == 0) {
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+ argv[0] = NULL;
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+ return 0;
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+ }
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+ /* len represents the number of bytes, not the number of 16 bytes chars */
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+ len = len >> 1;
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+
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+ /*
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+ * Here we use CHAR_NULL as the terminator rather than the length
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+ * because it seems like the EFI shell return rather bogus values for it.
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+ * Apparently, we are guaranteed to find the '\0' character in the buffer
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+ * where the real input arguments stop, so we use it instead.
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+ */
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+ for(;;) {
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+ while (buf[i] == CHAR_SPACE && buf[i] != CHAR_NULL && i < len) i++;
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+
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+ if (buf[i] == CHAR_NULL || i == len) goto end;
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+
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+ p = buf+i;
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+ i++;
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+
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+ while (buf[i] != CHAR_SPACE && buf[i] != CHAR_NULL && i < len) i++;
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+
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+ argv[j++] = p;
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+
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+ if (buf[i] == CHAR_NULL) goto end;
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+
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+ buf[i] = CHAR_NULL;
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+
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+ if (i == len) goto end;
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+
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+ i++;
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+
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+ if (j == MAX_ARGS-1) {
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+ Print(L"too many arguments (%d) truncating\n", j);
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+ goto end;
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+ }
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+ }
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+end:
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+ argv[j] = NULL;
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+ return j;
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+}
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+
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Nigel Croxon