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Support UTF-8 in config.txt

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This commit is contained in:
Lauri Kenttä
2017-07-03 21:11:54 +03:00
parent b3cc80b37b
commit 24c4a8aa0c
1 changed files with 46 additions and 5 deletions
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51
src/config.c
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@@ -4,14 +4,55 @@
#include <efilib.h>
BOOLEAN ReadConfigFile(struct HackBGRT_config* config, EFI_FILE_HANDLE root_dir, const CHAR16* path) {
CHAR16* str = 0;
UINTN str_bytes = 0;
str = LoadFileWithPadding(root_dir, path, &str_bytes, sizeof(*str));
if (!str) {
void* data = 0;
UINTN data_bytes = 0;
data = LoadFileWithPadding(root_dir, path, &data_bytes, 4);
if (!data) {
Print(L"HackBGRT: Failed to load configuration (%s)!\n", path);
return FALSE;
}
UINTN str_len = str_bytes / sizeof(*str);
CHAR16* str;
UINTN str_len;
if (*(CHAR16*)data == 0xfeff) {
// UCS-2
str = data;
str_len = data_bytes / sizeof(*str);
} else {
// UTF-8 -> UCS-2
EFI_STATUS e = BS->AllocatePool(EfiBootServicesData, data_bytes * 2 + 2, (void**)&str);
if (EFI_ERROR(e)) {
FreePool(data);
return FALSE;
}
UINT8* str0 = data;
for (UINTN i = str_len = 0; i < data_bytes;) {
UINTN unicode = 0xfffd;
if (str0[i] < 0x80) {
unicode = str0[i];
i += 1;
} else if (str0[i] < 0xc0) {
i += 1;
} else if (str0[i] < 0xe0) {
unicode = ((str0[i] & 0x1f) << 6) | ((str0[i+1] & 0x3f) << 0);
i += 2;
} else if (str0[i] < 0xf0) {
unicode = ((str0[i] & 0x0f) << 12) | ((str0[i+1] & 0x3f) << 6) | ((str0[i+2] & 0x3f) << 0);
i += 3;
} else if (str0[i] < 0xf8) {
unicode = ((str0[i] & 0x07) << 18) | ((str0[i+1] & 0x3f) << 12) | ((str0[i+2] & 0x3f) << 6) | ((str0[i+3] & 0x3f) << 0);
i += 4;
} else {
i += 1;
}
if (unicode <= 0xffff) {
str[str_len++] = unicode;
} else {
str[str_len++] = 0xfffd;
}
}
str[str_len] = 0;
FreePool(data);
}
for (int i = 0; i < str_len;) {
int j = i;