src/win32/w32_util.c

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7
   8 #include "w32_util.h"
   9
  10 /**
  11  * Creates a FindFirstFile(Ex) filter string from a UTF-8 path.
  12  * The filter string enumerates all items in the directory.
  13  *
  14  * @param dest The buffer to receive the filter string.
  15  * @param src The UTF-8 path of the directory to enumerate.
  16  * @return True if the filter string was created successfully; false otherwise
  17  */
  18 bool git_win32__findfirstfile_filter(git_win32_path dest, const char *src)
  19 {
  20         static const wchar_t suffix[] = L"\\*";
  21         int len = git_win32_path_from_utf8(dest, src);
  22
  23         /* Ensure the path was converted */
  24         if (len < 0)
  25                 return false;
  26
  27         /* Ensure that the path does not end with a trailing slash,
  28          * because we're about to add one. Don't rely our trim_end
  29          * helper, because we want to remove the backslash even for
  30          * drive letter paths, in this case. */
  31         if (len > 0 &&
  32                 (dest[len - 1] == L'/' || dest[len - 1] == L'\\')) {
  33                 dest[len - 1] = L'\0';
  34                 len--;
  35         }
  36
  37         /* Ensure we have enough room to add the suffix */
  38         if ((size_t)len >= GIT_WIN_PATH_UTF16 - CONST_STRLEN(suffix))
  39                 return false;
  40
  41         wcscat(dest, suffix);
  42         return true;
  43 }
  44
  45 /**
  46  * Ensures the given path (file or folder) has the +H (hidden) attribute set.
  47  *
  48  * @param path The path which should receive the +H bit.
  49  * @return 0 on success; -1 on failure
  50  */
  51 int git_win32__set_hidden(const char *path, bool hidden)
  52 {
  53         git_win32_path buf;
  54         DWORD attrs, newattrs;
  55
  56         if (git_win32_path_from_utf8(buf, path) < 0)
  57                 return -1;
  58
  59         attrs = GetFileAttributesW(buf);
  60
  61         /* Ensure the path exists */
  62         if (attrs == INVALID_FILE_ATTRIBUTES)
  63                 return -1;
  64
  65         if (hidden)
  66                 newattrs = attrs | FILE_ATTRIBUTE_HIDDEN;
  67         else
  68                 newattrs = attrs & ~FILE_ATTRIBUTE_HIDDEN;
  69
  70         if (attrs != newattrs && !SetFileAttributesW(buf, newattrs)) {
  71                 git_error_set(GIT_ERROR_OS, "failed to %s hidden bit for '%s'",
  72                         hidden ? "set" : "unset", path);
  73                 return -1;
  74         }
  75
  76         return 0;
  77 }
  78
  79 int git_win32__hidden(bool *out, const char *path)
  80 {
  81         git_win32_path buf;
  82         DWORD attrs;
  83
  84         if (git_win32_path_from_utf8(buf, path) < 0)
  85                 return -1;
  86
  87         attrs = GetFileAttributesW(buf);
  88
  89         /* Ensure the path exists */
  90         if (attrs == INVALID_FILE_ATTRIBUTES)
  91                 return -1;
  92
  93         *out = (attrs & FILE_ATTRIBUTE_HIDDEN) ? true : false;
  94         return 0;
  95 }