From def5c50960eea4c112647f88361a3ae7155901a8 Mon Sep 17 00:00:00 2001 From: egor-tensin Date: Tue, 4 Jul 2023 00:48:00 +0000 Subject: =?UTF-8?q?Deploying=20to=20gh-pages=20from=20@=20egor-tensin/wina?= =?UTF-8?q?pi-common@0c196cbe8b4927c78c02b2c7312fc69a507db845=20?= =?UTF-8?q?=F0=9F=9A=80?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- path_8cpp_source.html | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 path_8cpp_source.html (limited to 'path_8cpp_source.html') diff --git a/path_8cpp_source.html b/path_8cpp_source.html new file mode 100644 index 0000000..5cd7a6c --- /dev/null +++ b/path_8cpp_source.html @@ -0,0 +1,135 @@ + + + + + + + +winapi_common: src/path.cpp Source File + + + + + + + + + +
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winapi_common +
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path.cpp
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1 // Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
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2 // This file is part of the "winapi-common" project.
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3 // For details, see https://github.com/egor-tensin/winapi-common.
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4 // Distributed under the MIT License.
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5 
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6 #include <winapi/error.hpp>
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7 #include <winapi/path.hpp>
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8 #include <winapi/utf8.hpp>
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9 
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10 #include <windows.h>
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11 
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12 #include <cstddef>
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13 #include <limits>
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14 #include <stdexcept>
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15 #include <string>
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16 #include <vector>
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17 
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18 namespace winapi {
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19 namespace {
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20 
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21 std::wstring do_canonicalize(const std::wstring& path) {
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22  static constexpr std::size_t init_buffer_size = MAX_PATH;
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23  static_assert(init_buffer_size > 0, "init_buffer_size must be positive");
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24 
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25  std::vector<wchar_t> buffer;
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26  buffer.resize(init_buffer_size);
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27 
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28  while (true) {
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29  if (buffer.size() > std::numeric_limits<DWORD>::max())
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30  throw std::range_error{"Path buffer is too large"};
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31  const auto nch = ::GetFullPathNameW(
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32  path.c_str(), static_cast<DWORD>(buffer.size()), buffer.data(), NULL);
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33 
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34  if (nch == 0) {
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35  throw error::windows(GetLastError(), "GetFullPathNameW");
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36  }
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37 
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38  if (nch < buffer.size()) {
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39  return {buffer.data(), nch};
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40  }
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41 
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42  if (nch > buffer.size()) {
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43  buffer.resize(2 * buffer.size());
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44  }
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45  }
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46 }
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47 
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48 } // namespace
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49 
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50 CanonicalPath::CanonicalPath(const std::string& path) : m_path(canonicalize(path)) {}
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51 
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52 std::string CanonicalPath::canonicalize(const std::string& path) {
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53  return narrow(do_canonicalize(widen(path)));
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54 }
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55 
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56 } // namespace winapi
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error.hpp
Make std::system_error work with GetLastError().
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