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Reboot test: save large files

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[ Merge of http://go/wvgerrit/143629 ]

The standard b2a_hex only saves about 2k, so we need a special version
that can handle larger strings. This is needed because a license file
is about 7k.

Bug: 194342751
Test: GtsMediaTestCases on sunfish
Change-Id: I6a6ac3f8f4fa6d9cd8a0119fc64fc8f3cc5f3ae8
This commit is contained in:
Rahul Frias
2022-03-13 18:33:39 -07:00
parent 57353b4941
commit 520368cea2
3 changed files with 32 additions and 9 deletions
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20
libwvdrmengine/cdm/util/src/string_conversions.cpp
View File

@@ -201,20 +201,34 @@ std::string b2a_hex(const std::vector<uint8_t>& byte) {
return HexEncode(byte.data(), byte.size());
}
std::string unlimited_b2a_hex(const std::vector<uint8_t>& byte) {
if (byte.empty()) return "";
return UnlimitedHexEncode(byte.data(), byte.size());
}
std::string b2a_hex(const std::string& byte) {
if (byte.empty()) return "";
return HexEncode(reinterpret_cast<const uint8_t*>(byte.data()),
byte.length());
}
std::string unlimited_b2a_hex(const std::string& byte) {
if (byte.empty()) return "";
return UnlimitedHexEncode(reinterpret_cast<const uint8_t*>(byte.data()),
byte.length());
}
std::string HexEncode(const uint8_t* in_buffer, size_t size) {
static const char kHexChars[] = "0123456789ABCDEF";
if (size == 0) return "";
constexpr unsigned int kMaxSafeSize = 2048;
if (size > kMaxSafeSize) size = kMaxSafeSize;
return UnlimitedHexEncode(in_buffer, size);
}
std::string UnlimitedHexEncode(const uint8_t* in_buffer, size_t size) {
static const char kHexChars[] = "0123456789ABCDEF";
if (size == 0) return "";
// Each input byte creates two output hex characters.
std::string out_buffer(size * 2, '\0');
for (unsigned int i = 0; i < size; ++i) {
char byte = in_buffer[i];
out_buffer[(i << 1)] = kHexChars[(byte >> 4) & 0xf];