blob: 136423ea5cda835590dc0fc8e37ba51e2aa4832e [file] [log] [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/url_request/view_cache_helper.h"
#include <algorithm>
#include <utility>
#include "base/strings/escape.h"
#include "base/strings/stringprintf.h"
namespace net {
// static
void ViewCacheHelper::HexDump(const char *buf, size_t buf_len,
std::string* result) {
const size_t kMaxRows = 16;
int offset = 0;
const unsigned char *p;
while (buf_len) {
base::StringAppendF(result, "%08x: ", offset);
offset += kMaxRows;
p = (const unsigned char *) buf;
size_t i;
size_t row_max = std::min(kMaxRows, buf_len);
// print hex codes:
for (i = 0; i < row_max; ++i)
base::StringAppendF(result, "%02x ", *p++);
for (i = row_max; i < kMaxRows; ++i)
result->append(" ");
result->append(" ");
// print ASCII glyphs if possible:
p = (const unsigned char *) buf;
for (i = 0; i < row_max; ++i, ++p) {
if (*p < 0x7F && *p > 0x1F) {
base::AppendEscapedCharForHTML(*p, result);
} else {
result->push_back('.');
}
}
result->push_back('\n');
buf += row_max;
buf_len -= row_max;
}
}
} // namespace net.