Add logging to minidump processor (#82). First part: logging infrastructure

and messages for minidump.cc and minidump_processor.cc.  r=bryner.

http://groups.google.com/group/google-breakpad-dev/browse_thread/thread/b056994d675f623c


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@169 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/logging.cc

@@ -0,0 +1,104 @@
+// Copyright (c) 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// logging.cc: Breakpad logging
+//
+// See logging.h for documentation.
+//
+// Author: Mark Mentovai
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#include "processor/logging.h"
+#include "processor/pathname_stripper.h"
+
+namespace google_breakpad {
+
+LogStream::LogStream(std::ostream &stream, Severity severity,
+                     const char *file, int line)
+    : stream_(stream) {
+  time_t clock;
+  time(&clock);
+  struct tm tm_struct;
+  localtime_r(&clock, &tm_struct);
+  char time_string[20];
+  strftime(time_string, sizeof(time_string), "%Y-%m-%d %H:%M:%S", &tm_struct);
+
+  const char *severity_string = "UNKNOWN_SEVERITY";
+  switch (severity) {
+    case SEVERITY_INFO:
+      severity_string = "INFO";
+      break;
+    case SEVERITY_ERROR:
+      severity_string = "ERROR";
+      break;
+  }
+
+  stream_ << time_string << ": " << PathnameStripper::File(file) << ":" <<
+             line << ": " << severity_string << ": ";
+}
+
+LogStream::~LogStream() {
+  stream_ << std::endl;
+}
+
+std::string HexString(u_int32_t number) {
+  char buffer[11];
+  snprintf(buffer, sizeof(buffer), "0x%x", number);
+  return std::string(buffer);
+}
+
+std::string HexString(u_int64_t number) {
+  char buffer[19];
+  snprintf(buffer, sizeof(buffer), "0x%llx", number);
+  return std::string(buffer);
+}
+
+std::string HexString(int number) {
+  char buffer[19];
+  snprintf(buffer, sizeof(buffer), "0x%x", number);
+  return std::string(buffer);
+}
+
+int ErrnoString(std::string *error_string) {
+  assert(error_string);
+
+  // strerror isn't necessarily thread-safe.  strerror_r would be preferrable,
+  // but GNU libc uses a nonstandard strerror_r by default, which returns a
+  // char* (rather than an int success indicator) and doesn't necessarily
+  // use the supplied buffer.
+  error_string->assign(strerror(errno));
+  return errno;
+}
+
+}  // namespace google_breakpad