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@@ -0,0 +1,36 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * String functions
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+ *
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+ * Copyright (c) 2020 AKASHI Takahiro, Linaro Limited
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+ */
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+
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+#include <common.h>
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+#include <charset.h>
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+
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+/**
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+ * efi_create_indexed_name - create a string name with an index
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+ * @buffer: Buffer
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+ * @name: Name string
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+ * @index: Index
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+ *
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+ * Create a utf-16 string with @name, appending @index.
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+ * For example, L"Capsule0001"
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+ *
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+ * The caller must ensure that the buffer has enough space for the resulting
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+ * string including the trailing L'\0'.
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+ *
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+ * Return: A pointer to the next position after the created string
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+ * in @buffer, or NULL otherwise
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+ */
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+u16 *efi_create_indexed_name(u16 *buffer, const char *name, unsigned int index)
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+{
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+ u16 *p = buffer;
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+ char index_buf[5];
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+
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+ utf8_utf16_strcpy(&p, name);
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+ sprintf(index_buf, "%04X", index);
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+ utf8_utf16_strcpy(&p, index_buf);
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+
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+ return p;
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+}
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