From 88bb163f816d00d2805b6a0d97ea0f4200b84553 Mon Sep 17 00:00:00 2001
From: Zachary Turner <zturner@google.com>
Date: Tue, 3 May 2016 00:28:04 +0000
Subject: Move llvm-readobj/StreamWriter to Support.

We wish to re-use this from llvm-pdbdump, and it provides a nice
way to print structured data in scoped format that could prove
useful for many other dumping tools as well.  Moving to support
and changing name to ScopedPrinter to better reflect its purpose.

llvm-svn: 268342
---
 llvm/lib/Support/CMakeLists.txt    |  1 +
 llvm/lib/Support/ScopedPrinter.cpp | 72 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 llvm/lib/Support/ScopedPrinter.cpp

(limited to 'llvm/lib/Support')

diff --git a/llvm/lib/Support/CMakeLists.txt b/llvm/lib/Support/CMakeLists.txt
index 0de1972b3c5..3d718e6a11c 100644
--- a/llvm/lib/Support/CMakeLists.txt
+++ b/llvm/lib/Support/CMakeLists.txt
@@ -76,6 +76,7 @@ add_llvm_library(LLVMSupport
   RandomNumberGenerator.cpp
   Regex.cpp
   ScaledNumber.cpp
+  ScopedPrinter.cpp
   SHA1.cpp
   SmallPtrSet.cpp
   SmallVector.cpp
diff --git a/llvm/lib/Support/ScopedPrinter.cpp b/llvm/lib/Support/ScopedPrinter.cpp
new file mode 100644
index 00000000000..0225f01156a
--- /dev/null
+++ b/llvm/lib/Support/ScopedPrinter.cpp
@@ -0,0 +1,72 @@
+#include "llvm/Support/ScopedPrinter.h"
+
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/Format.h"
+#include <cctype>
+
+using namespace llvm::support;
+
+namespace llvm {
+
+raw_ostream &operator<<(raw_ostream &OS, const HexNumber &Value) {
+  OS << "0x" << to_hexString(Value.Value);
+  return OS;
+}
+
+const std::string to_hexString(uint64_t Value, bool UpperCase) {
+  std::string number;
+  llvm::raw_string_ostream stream(number);
+  stream << format_hex_no_prefix(Value, 1, UpperCase);
+  return stream.str();
+}
+
+void ScopedPrinter::printBinaryImpl(StringRef Label, StringRef Str,
+                                    ArrayRef<uint8_t> Data, bool Block) {
+  if (Data.size() > 16)
+    Block = true;
+
+  if (Block) {
+    startLine() << Label;
+    if (Str.size() > 0)
+      OS << ": " << Str;
+    OS << " (\n";
+    for (size_t addr = 0, end = Data.size(); addr < end; addr += 16) {
+      startLine() << format("  %04" PRIX64 ": ", uint64_t(addr));
+      // Dump line of hex.
+      for (size_t i = 0; i < 16; ++i) {
+        if (i != 0 && i % 4 == 0)
+          OS << ' ';
+        if (addr + i < end)
+          OS << hexdigit((Data[addr + i] >> 4) & 0xF, false)
+             << hexdigit(Data[addr + i] & 0xF, false);
+        else
+          OS << "  ";
+      }
+      // Print ascii.
+      OS << "  |";
+      for (std::size_t i = 0; i < 16 && addr + i < end; ++i) {
+        if (std::isprint(Data[addr + i] & 0xFF))
+          OS << Data[addr + i];
+        else
+          OS << ".";
+      }
+      OS << "|\n";
+    }
+
+    startLine() << ")\n";
+  } else {
+    startLine() << Label << ":";
+    if (Str.size() > 0)
+      OS << " " << Str;
+    OS << " (";
+    for (size_t i = 0; i < Data.size(); ++i) {
+      if (i > 0)
+        OS << " ";
+
+      OS << format("%02X", static_cast<int>(Data[i]));
+    }
+    OS << ")\n";
+  }
+}
+
+} // namespace llvm
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