thodg/libgit2/src/util/win32/w32_util.c

• Show log

  Commit

• Hash : c3b7ace9
  Author :
  Date : 2021-11-14T16:43:53
  

  refactor: make util an object library Instead of simply including the utility files directly, make them a cmake object library for easy reusability between other projects within libgit2. Now the top-level `src` is responsible for platform selection, while the next-level `libgit2` and `util` configurations are responsible for identifying what objects they include.

Download

• src/util/win32/w32_util.c

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  
  #include "w32_util.h"
  
  /**
   * Creates a FindFirstFile(Ex) filter string from a UTF-8 path.
   * The filter string enumerates all items in the directory.
   *
   * @param dest The buffer to receive the filter string.
   * @param src The UTF-8 path of the directory to enumerate.
   * @return True if the filter string was created successfully; false otherwise
   */
  bool git_win32__findfirstfile_filter(git_win32_path dest, const char *src)
  {
  	static const wchar_t suffix[] = L"\\*";
  	int len = git_win32_path_from_utf8(dest, src);
  
  	/* Ensure the path was converted */
  	if (len < 0)
  		return false;
  
  	/* Ensure that the path does not end with a trailing slash,
  	 * because we're about to add one. Don't rely our trim_end
  	 * helper, because we want to remove the backslash even for
  	 * drive letter paths, in this case. */
  	if (len > 0 &&
  		(dest[len - 1] == L'/' || dest[len - 1] == L'\\')) {
  		dest[len - 1] = L'\0';
  		len--;
  	}
  
  	/* Ensure we have enough room to add the suffix */
  	if ((size_t)len >= GIT_WIN_PATH_UTF16 - CONST_STRLEN(suffix))
  		return false;
  
  	wcscat(dest, suffix);
  	return true;
  }
  
  /**
   * Ensures the given path (file or folder) has the +H (hidden) attribute set.
   *
   * @param path The path which should receive the +H bit.
   * @return 0 on success; -1 on failure
   */
  int git_win32__set_hidden(const char *path, bool hidden)
  {
  	git_win32_path buf;
  	DWORD attrs, newattrs;
  
  	if (git_win32_path_from_utf8(buf, path) < 0)
  		return -1;
  
  	attrs = GetFileAttributesW(buf);
  
  	/* Ensure the path exists */
  	if (attrs == INVALID_FILE_ATTRIBUTES)
  		return -1;
  
  	if (hidden)
  		newattrs = attrs | FILE_ATTRIBUTE_HIDDEN;
  	else
  		newattrs = attrs & ~FILE_ATTRIBUTE_HIDDEN;
  
  	if (attrs != newattrs && !SetFileAttributesW(buf, newattrs)) {
  		git_error_set(GIT_ERROR_OS, "failed to %s hidden bit for '%s'",
  			hidden ? "set" : "unset", path);
  		return -1;
  	}
  
  	return 0;
  }
  
  int git_win32__hidden(bool *out, const char *path)
  {
  	git_win32_path buf;
  	DWORD attrs;
  
  	if (git_win32_path_from_utf8(buf, path) < 0)
  		return -1;
  
  	attrs = GetFileAttributesW(buf);
  
  	/* Ensure the path exists */
  	if (attrs == INVALID_FILE_ATTRIBUTES)
  		return -1;
  
  	*out = (attrs & FILE_ATTRIBUTE_HIDDEN) ? true : false;
  	return 0;
  }
  
  int git_win32__file_attribute_to_stat(
  	struct stat *st,
  	const WIN32_FILE_ATTRIBUTE_DATA *attrdata,
  	const wchar_t *path)
  {
  	git_win32__stat_init(st,
  		attrdata->dwFileAttributes,
  		attrdata->nFileSizeHigh,
  		attrdata->nFileSizeLow,
  		attrdata->ftCreationTime,
  		attrdata->ftLastAccessTime,
  		attrdata->ftLastWriteTime);
  
  	if (attrdata->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT && path) {
  		git_win32_path target;
  
  		if (git_win32_path_readlink_w(target, path) >= 0) {
  			st->st_mode = (st->st_mode & ~S_IFMT) | S_IFLNK;
  
  			/* st_size gets the UTF-8 length of the target name, in bytes,
  			 * not counting the NULL terminator */
  			if ((st->st_size = git__utf16_to_8(NULL, 0, target)) < 0) {
  				git_error_set(GIT_ERROR_OS, "could not convert reparse point name for '%ls'", path);
  				return -1;
  			}
  		}
  	}
  
  	return 0;
  }
  

Download