From 5872753e2dbdca5b252470c5210cdf54ee1788dd Mon Sep 17 00:00:00 2001
From: laforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>
Date: Mon, 25 Sep 2006 21:23:52 +0000
Subject: - Include tool for Converting ASCII to UTF-16LE in C-Header - Build
UTF-16LE USB String descriptors from ASCII File - Introduce USB String
Descriptor to DFU and runtime firmware
git-svn-id: https://svn.openpcd.org:2342/trunk@227 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
---
firmware/scripts/usbstring.c | 197 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 197 insertions(+)
create mode 100644 firmware/scripts/usbstring.c
(limited to 'firmware/scripts')
diff --git a/firmware/scripts/usbstring.c b/firmware/scripts/usbstring.c
new file mode 100644
index 0000000..5348e66
--- /dev/null
+++ b/firmware/scripts/usbstring.c
@@ -0,0 +1,197 @@
+/* AT91SAM7 USB string descriptor builder
+ * (C) 2006 by Harald Welte <laforge@gnumonks.org>
+ *
+ * This program 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.
+ *
+ * This program 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
+ */
+
+/* Based on existing utf8_to_utf16le() function,
+ * Copyright (C) 2003 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+
+static int utf8_to_utf16le(const char *s, u_int16_t *cp, unsigned len)
+{
+ int count = 0;
+ u_int8_t c;
+ u_int16_t uchar;
+
+ /* this insists on correct encodings, though not minimal ones.
+ * BUT it currently rejects legit 4-byte UTF-8 code points,
+ * which need surrogate pairs. (Unicode 3.1 can use them.)
+ */
+ while (len != 0 && (c = (u_int8_t) *s++) != 0) {
+ if (c & 0x80) {
+ // 2-byte sequence:
+ // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+ if ((c & 0xe0) == 0xc0) {
+ uchar = (c & 0x1f) << 6;
+
+ c = (u_int8_t) *s++;
+ if ((c & 0xc0) != 0xc0)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c;
+
+ // 3-byte sequence (most CJKV characters):
+ // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+ } else if ((c & 0xf0) == 0xe0) {
+ uchar = (c & 0x0f) << 12;
+
+ c = (u_int8_t) *s++;
+ if ((c & 0xc0) != 0xc0)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c << 6;
+
+ c = (u_int8_t) *s++;
+ if ((c & 0xc0) != 0xc0)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c;
+
+ /* no bogus surrogates */
+ if (0xd800 <= uchar && uchar <= 0xdfff)
+ goto fail;
+
+ // 4-byte sequence (surrogate pairs, currently rare):
+ // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+ // = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+ // (uuuuu = wwww + 1)
+ // FIXME accept the surrogate code points (only)
+
+ } else
+ goto fail;
+ } else
+ uchar = c;
+
+ *cp++ = uchar;
+ count++;
+ len--;
+ }
+ return count;
+fail:
+ return -1;
+}
+
+#define COLUMNS 6
+static int print_array16(u_int16_t *buf, int len)
+{
+ int i;
+ for (i = 0; i < len; i++) {
+ int mod = i % COLUMNS;
+ char *suffix;
+ char *prefix;
+
+ switch (mod) {
+ case 0:
+ if (i == 0)
+ prefix = "\t";
+ else
+ prefix= "\t\t\t";
+ suffix = ", ";
+ break;
+ case COLUMNS-1:
+ prefix = "";
+ suffix = ",\n";
+ break;
+ default:
+ prefix = "";
+ suffix = ", ";
+ break;
+ }
+
+ printf("%s0x%04x%s", prefix, buf[i], suffix);
+ }
+}
+
+static void print_structhdr(int i, int size)
+{
+ printf( "static const struct {\n"
+ "\tstruct usb_descriptor_header hdr;\n"
+ "\tu_int16_t wData[];\n"
+ "} __attribute__((packed)) string%d = {\n"
+ "\t.hdr = {\n"
+ "\t\t.bLength = sizeof(struct usb_descriptor_header) + %u * sizeof(u_int16_t),\n"
+ "\t\t.bDescriptorType = USB_DT_STRING,\n"
+ "\t},\n"
+ "\t.wData = {", i, size);
+}
+static void print_structftr(void)
+{
+ printf("},\n};\n\n");
+}
+
+int main(int argc, char **argv)
+{
+ char asciibuf[512+1];
+ u_int16_t utf16buf[1024+1];
+ int len;
+ int j, i = 1;
+
+ printf("#ifndef _USB_STRINGS_H\n#define _USB_STRINGS_H\n\n");
+ printf("/* THIS FILE IS AUTOGENERATED, DO NOT MODIFY MANUALLY */\n\n");
+ printf("#include <usb_ch9.h>\n");
+ printf("#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))\n\n");
+
+ print_structhdr(0, 1);
+ printf("0x0409 /* English */ ");
+ print_structftr();
+#if 0
+ printf("static const struct usb_string_descriptor string0 = {\n"
+ "\t.bLength = sizeof(string0) + 1 * sizeof(u_int16_t),\n"
+ "\t.bDescriptorType = USB_DT_STRING,\n"
+ "\t.wData[0] = 0x0409, /* English */\n"
+ "};\n\n");
+#endif
+
+ while (scanf("%512[^\n]\n", asciibuf) != EOF) {
+ len = strlen(asciibuf);
+ printf("/* String %u \"%s\" */\n", i, asciibuf);
+
+ /* FIXME: check return value */
+ utf8_to_utf16le(asciibuf, utf16buf, len);
+
+ print_structhdr(i, len);
+#if 0
+ printf("static const struct usb_string_descriptor string%d = {\n"
+ "\t.bLength = sizeof(string%d) + %d * sizeof(u_int16_t),\n"
+ "\t.bDescriptorType = USB_DT_STRING,\n"
+ "\t.wData = {", i, i, len);
+#endif
+
+ print_array16(utf16buf, len);
+
+ print_structftr();
+#if 0
+ printf("},\n};\n\n");
+#endif
+
+ i++;
+ }
+
+ printf("static const struct usb_descriptor_header *usb_strings[] = {\n");
+ for (j = 0; j < i; j++)
+ printf("\t(struct usb_descriptor_header *) &string%d,\n", j);
+ printf("};\n\n");
+ printf("#endif /* _USB_STRINGS_H */\n");
+}
--
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