Move HexDump to include/perfetto/ext/base/utils.h
It's going to have a usecase outside of tests.
Bug: 205763418
Change-Id: I1686ff72c1c235ff64675e057a9a01ef501326e2
diff --git a/src/base/utils.cc b/src/base/utils.cc
index b5d3d3c..363a0d6 100644
--- a/src/base/utils.cc
+++ b/src/base/utils.cc
@@ -266,5 +266,28 @@
#endif
}
+std::string HexDump(const void* data_void, size_t len, size_t bytes_per_line) {
+ const char* data = reinterpret_cast<const char*>(data_void);
+ std::string res;
+ static const size_t kPadding = bytes_per_line * 3 + 12;
+ std::unique_ptr<char[]> line(new char[bytes_per_line * 4 + 128]);
+ for (size_t i = 0; i < len; i += bytes_per_line) {
+ char* wptr = line.get();
+ wptr += sprintf(wptr, "%08zX: ", i);
+ for (size_t j = i; j < i + bytes_per_line && j < len; j++)
+ wptr += sprintf(wptr, "%02X ", static_cast<unsigned>(data[j]) & 0xFF);
+ for (size_t j = static_cast<size_t>(wptr - line.get()); j < kPadding; ++j)
+ *(wptr++) = ' ';
+ for (size_t j = i; j < i + bytes_per_line && j < len; j++) {
+ char c = data[j];
+ *(wptr++) = (c >= 32 && c < 127) ? c : '.';
+ }
+ *(wptr++) = '\n';
+ *(wptr++) = '\0';
+ res.append(line.get());
+ }
+ return res;
+}
+
} // namespace base
} // namespace perfetto
