From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/lib/charset.c | 546 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 546 insertions(+)
create mode 100644 roms/u-boot/lib/charset.c
(limited to 'roms/u-boot/lib/charset.c')
diff --git a/roms/u-boot/lib/charset.c b/roms/u-boot/lib/charset.c
new file mode 100644
index 000000000..f44c58d9d
--- /dev/null
+++ b/roms/u-boot/lib/charset.c
@@ -0,0 +1,546 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * charset conversion utils
+ *
+ * Copyright (c) 2017 Rob Clark
+ */
+
+#include <common.h>
+#include <charset.h>
+#include <capitalization.h>
+#include <cp437.h>
+#include <efi_loader.h>
+#include <errno.h>
+#include <malloc.h>
+
+/**
+ * codepage_437 - Unicode to codepage 437 translation table
+ */
+const u16 codepage_437[128] = CP437;
+
+static struct capitalization_table capitalization_table[] =
+#ifdef CONFIG_EFI_UNICODE_CAPITALIZATION
+ UNICODE_CAPITALIZATION_TABLE;
+#elif CONFIG_FAT_DEFAULT_CODEPAGE == 1250
+ CP1250_CAPITALIZATION_TABLE;
+#else
+ CP437_CAPITALIZATION_TABLE;
+#endif
+
+/**
+ * get_code() - read Unicode code point from UTF-8 stream
+ *
+ * @read_u8: - stream reader
+ * @src: - string buffer passed to stream reader, optional
+ * Return: - Unicode code point, or -1
+ */
+static int get_code(u8 (*read_u8)(void *data), void *data)
+{
+ s32 ch = 0;
+
+ ch = read_u8(data);
+ if (!ch)
+ return 0;
+ if (ch >= 0xc2 && ch <= 0xf4) {
+ int code = 0;
+
+ if (ch >= 0xe0) {
+ if (ch >= 0xf0) {
+ /* 0xf0 - 0xf4 */
+ ch &= 0x07;
+ code = ch << 18;
+ ch = read_u8(data);
+ if (ch < 0x80 || ch > 0xbf)
+ goto error;
+ ch &= 0x3f;
+ } else {
+ /* 0xe0 - 0xef */
+ ch &= 0x0f;
+ }
+ code += ch << 12;
+ if ((code >= 0xD800 && code <= 0xDFFF) ||
+ code >= 0x110000)
+ goto error;
+ ch = read_u8(data);
+ if (ch < 0x80 || ch > 0xbf)
+ goto error;
+ }
+ /* 0xc0 - 0xdf or continuation byte (0x80 - 0xbf) */
+ ch &= 0x3f;
+ code += ch << 6;
+ ch = read_u8(data);
+ if (ch < 0x80 || ch > 0xbf)
+ goto error;
+ ch &= 0x3f;
+ ch += code;
+ } else if (ch >= 0x80) {
+ goto error;
+ }
+ return ch;
+error:
+ return -1;
+}
+
+/**
+ * read_string() - read byte from character string
+ *
+ * @data: - pointer to string
+ * Return: - byte read
+ *
+ * The string pointer is incremented if it does not point to '\0'.
+ */
+static u8 read_string(void *data)
+
+{
+ const char **src = (const char **)data;
+ u8 c;
+
+ if (!src || !*src || !**src)
+ return 0;
+ c = **src;
+ ++*src;
+ return c;
+}
+
+/**
+ * read_console() - read byte from console
+ *
+ * @data - not used, needed to match interface
+ * Return: - byte read or 0 on error
+ */
+static u8 read_console(void *data)
+{
+ int ch;
+
+ ch = getchar();
+ if (ch < 0)
+ ch = 0;
+ return ch;
+}
+
+int console_read_unicode(s32 *code)
+{
+ for (;;) {
+ s32 c;
+
+ if (!tstc()) {
+ /* No input available */
+ return 1;
+ }
+
+ /* Read Unicode code */
+ c = get_code(read_console, NULL);
+ if (c > 0) {
+ *code = c;
+ return 0;
+ }
+ }
+}
+
+s32 utf8_get(const char **src)
+{
+ return get_code(read_string, src);
+}
+
+int utf8_put(s32 code, char **dst)
+{
+ if (!dst || !*dst)
+ return -1;
+ if ((code >= 0xD800 && code <= 0xDFFF) || code >= 0x110000)
+ return -1;
+ if (code <= 0x007F) {
+ **dst = code;
+ } else {
+ if (code <= 0x07FF) {
+ **dst = code >> 6 | 0xC0;
+ } else {
+ if (code < 0x10000) {
+ **dst = code >> 12 | 0xE0;
+ } else {
+ **dst = code >> 18 | 0xF0;
+ ++*dst;
+ **dst = (code >> 12 & 0x3F) | 0x80;
+ }
+ ++*dst;
+ **dst = (code >> 6 & 0x3F) | 0x80;
+ }
+ ++*dst;
+ **dst = (code & 0x3F) | 0x80;
+ }
+ ++*dst;
+ return 0;
+}
+
+size_t utf8_utf16_strnlen(const char *src, size_t count)
+{
+ size_t len = 0;
+
+ for (; *src && count; --count) {
+ s32 code = utf8_get(&src);
+
+ if (!code)
+ break;
+ if (code < 0) {
+ /* Reserve space for a replacement character */
+ len += 1;
+ } else if (code < 0x10000) {
+ len += 1;
+ } else {
+ len += 2;
+ }
+ }
+ return len;
+}
+
+int utf8_utf16_strncpy(u16 **dst, const char *src, size_t count)
+{
+ if (!src || !dst || !*dst)
+ return -1;
+
+ for (; count && *src; --count) {
+ s32 code = utf8_get(&src);
+
+ if (code < 0)
+ code = '?';
+ utf16_put(code, dst);
+ }
+ **dst = 0;
+ return 0;
+}
+
+s32 utf16_get(const u16 **src)
+{
+ s32 code, code2;
+
+ if (!src || !*src)
+ return -1;
+ if (!**src)
+ return 0;
+ code = **src;
+ ++*src;
+ if (code >= 0xDC00 && code <= 0xDFFF)
+ return -1;
+ if (code >= 0xD800 && code <= 0xDBFF) {
+ if (!**src)
+ return -1;
+ code &= 0x3ff;
+ code <<= 10;
+ code += 0x10000;
+ code2 = **src;
+ ++*src;
+ if (code2 <= 0xDC00 || code2 >= 0xDFFF)
+ return -1;
+ code2 &= 0x3ff;
+ code += code2;
+ }
+ return code;
+}
+
+int utf16_put(s32 code, u16 **dst)
+{
+ if (!dst || !*dst)
+ return -1;
+ if ((code >= 0xD800 && code <= 0xDFFF) || code >= 0x110000)
+ return -1;
+ if (code < 0x10000) {
+ **dst = code;
+ } else {
+ code -= 0x10000;
+ **dst = code >> 10 | 0xD800;
+ ++*dst;
+ **dst = (code & 0x3ff) | 0xDC00;
+ }
+ ++*dst;
+ return 0;
+}
+
+size_t utf16_strnlen(const u16 *src, size_t count)
+{
+ size_t len = 0;
+
+ for (; *src && count; --count) {
+ s32 code = utf16_get(&src);
+
+ if (!code)
+ break;
+ /*
+ * In case of an illegal sequence still reserve space for a
+ * replacement character.
+ */
+ ++len;
+ }
+ return len;
+}
+
+size_t utf16_utf8_strnlen(const u16 *src, size_t count)
+{
+ size_t len = 0;
+
+ for (; *src && count; --count) {
+ s32 code = utf16_get(&src);
+
+ if (!code)
+ break;
+ if (code < 0)
+ /* Reserve space for a replacement character */
+ len += 1;
+ else if (code < 0x80)
+ len += 1;
+ else if (code < 0x800)
+ len += 2;
+ else if (code < 0x10000)
+ len += 3;
+ else
+ len += 4;
+ }
+ return len;
+}
+
+int utf16_utf8_strncpy(char **dst, const u16 *src, size_t count)
+{
+ if (!src || !dst || !*dst)
+ return -1;
+
+ for (; count && *src; --count) {
+ s32 code = utf16_get(&src);
+
+ if (code < 0)
+ code = '?';
+ utf8_put(code, dst);
+ }
+ **dst = 0;
+ return 0;
+}
+
+s32 utf_to_lower(const s32 code)
+{
+ struct capitalization_table *pos = capitalization_table;
+ s32 ret = code;
+
+ if (code <= 0x7f) {
+ if (code >= 'A' && code <= 'Z')
+ ret += 0x20;
+ return ret;
+ }
+ for (; pos->upper; ++pos) {
+ if (pos->upper == code) {
+ ret = pos->lower;
+ break;
+ }
+ }
+ return ret;
+}
+
+s32 utf_to_upper(const s32 code)
+{
+ struct capitalization_table *pos = capitalization_table;
+ s32 ret = code;
+
+ if (code <= 0x7f) {
+ if (code >= 'a' && code <= 'z')
+ ret -= 0x20;
+ return ret;
+ }
+ for (; pos->lower; ++pos) {
+ if (pos->lower == code) {
+ ret = pos->upper;
+ break;
+ }
+ }
+ return ret;
+}
+
+/*
+ * u16_strncmp() - compare two u16 string
+ *
+ * @s1: first string to compare
+ * @s2: second string to compare
+ * @n: maximum number of u16 to compare
+ * Return: 0 if the first n u16 are the same in s1 and s2
+ * < 0 if the first different u16 in s1 is less than the
+ * corresponding u16 in s2
+ * > 0 if the first different u16 in s1 is greater than the
+ * corresponding u16 in s2
+ */
+int u16_strncmp(const u16 *s1, const u16 *s2, size_t n)
+{
+ int ret = 0;
+
+ for (; n; --n, ++s1, ++s2) {
+ ret = *s1 - *s2;
+ if (ret || !*s1)
+ break;
+ }
+
+ return ret;
+}
+
+size_t u16_strlen(const void *in)
+{
+ const char *pos = in;
+ size_t ret;
+
+ for (; pos[0] || pos[1]; pos += 2)
+ ;
+ ret = pos - (char *)in;
+ ret >>= 1;
+ return ret;
+}
+
+size_t __efi_runtime u16_strnlen(const u16 *in, size_t count)
+{
+ size_t i;
+ for (i = 0; count-- && in[i]; i++);
+ return i;
+}
+
+size_t u16_strsize(const void *in)
+{
+ return (u16_strlen(in) + 1) * sizeof(u16);
+}
+
+u16 *u16_strcpy(u16 *dest, const u16 *src)
+{
+ u16 *tmp = dest;
+
+ for (;; dest++, src++) {
+ *dest = *src;
+ if (!*src)
+ break;
+ }
+
+ return tmp;
+}
+
+u16 *u16_strdup(const void *src)
+{
+ u16 *new;
+ size_t len;
+
+ if (!src)
+ return NULL;
+ len = (u16_strlen(src) + 1) * sizeof(u16);
+ new = malloc(len);
+ if (!new)
+ return NULL;
+ memcpy(new, src, len);
+
+ return new;
+}
+
+/* Convert UTF-16 to UTF-8. */
+uint8_t *utf16_to_utf8(uint8_t *dest, const uint16_t *src, size_t size)
+{
+ uint32_t code_high = 0;
+
+ while (size--) {
+ uint32_t code = *src++;
+
+ if (code_high) {
+ if (code >= 0xDC00 && code <= 0xDFFF) {
+ /* Surrogate pair. */
+ code = ((code_high - 0xD800) << 10) + (code - 0xDC00) + 0x10000;
+
+ *dest++ = (code >> 18) | 0xF0;
+ *dest++ = ((code >> 12) & 0x3F) | 0x80;
+ *dest++ = ((code >> 6) & 0x3F) | 0x80;
+ *dest++ = (code & 0x3F) | 0x80;
+ } else {
+ /* Error... */
+ *dest++ = '?';
+ /* *src may be valid. Don't eat it. */
+ src--;
+ }
+
+ code_high = 0;
+ } else {
+ if (code <= 0x007F) {
+ *dest++ = code;
+ } else if (code <= 0x07FF) {
+ *dest++ = (code >> 6) | 0xC0;
+ *dest++ = (code & 0x3F) | 0x80;
+ } else if (code >= 0xD800 && code <= 0xDBFF) {
+ code_high = code;
+ continue;
+ } else if (code >= 0xDC00 && code <= 0xDFFF) {
+ /* Error... */
+ *dest++ = '?';
+ } else if (code < 0x10000) {
+ *dest++ = (code >> 12) | 0xE0;
+ *dest++ = ((code >> 6) & 0x3F) | 0x80;
+ *dest++ = (code & 0x3F) | 0x80;
+ } else {
+ *dest++ = (code >> 18) | 0xF0;
+ *dest++ = ((code >> 12) & 0x3F) | 0x80;
+ *dest++ = ((code >> 6) & 0x3F) | 0x80;
+ *dest++ = (code & 0x3F) | 0x80;
+ }
+ }
+ }
+
+ return dest;
+}
+
+int utf_to_cp(s32 *c, const u16 *codepage)
+{
+ if (*c >= 0x80) {
+ int j;
+
+ /* Look up codepage translation */
+ for (j = 0; j < 0x80; ++j) {
+ if (*c == codepage[j]) {
+ *c = j + 0x80;
+ return 0;
+ }
+ }
+ *c = '?';
+ return -ENOENT;
+ }
+ return 0;
+}
+
+int utf8_to_cp437_stream(u8 c, char *buffer)
+{
+ char *end;
+ const char *pos;
+ s32 s;
+ int ret;
+
+ for (;;) {
+ pos = buffer;
+ end = buffer + strlen(buffer);
+ *end++ = c;
+ *end = 0;
+ s = utf8_get(&pos);
+ if (s > 0) {
+ *buffer = 0;
+ ret = utf_to_cp(&s, codepage_437);
+ return s;
+ }
+ if (pos == end)
+ return 0;
+ *buffer = 0;
+ }
+}
+
+int utf8_to_utf32_stream(u8 c, char *buffer)
+{
+ char *end;
+ const char *pos;
+ s32 s;
+
+ for (;;) {
+ pos = buffer;
+ end = buffer + strlen(buffer);
+ *end++ = c;
+ *end = 0;
+ s = utf8_get(&pos);
+ if (s > 0) {
+ *buffer = 0;
+ return s;
+ }
+ if (pos == end)
+ return 0;
+ *buffer = 0;
+ }
+}
--
cgit