lib/home.c: Introduce functions for building pathmames in home directories.

[disorder] / lib / home.c

diff --git a/lib/home.c b/lib/home.c
new file mode 100644 (file)
index 0000000..5426f76
--- /dev/null
+++ b/lib/home.c
@@ -0,0 +1,102 @@
+/*
+ * This file is part of DisOrder
+ * Copyright (C) 2020 Mark Wooding
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/** @file lib/home.c
+ * @brief Find things in the user's home directory
+ */
+
+#include "common.h"
+
+#include <errno.h>
+
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#if HAVE_PWD_H
+# include <pwd.h>
+#endif
+#if HAVE_SHLOBJ_H
+# include <Shlobj.h>
+#endif
+
+#include "mem.h"
+#include "home.h"
+#include "log.h"
+#include "printf.h"
+
+#if _WIN32
+#  define DIRSEP "\\"
+#else
+#  define DIRSEP "/"
+#endif
+
+static char *profiledir;
+
+
+/** @brief Return the user's profile directory
+ * @return profile directory
+ * On Unix, this defaults to `$HOME/.disorder/'; on Windows, it's
+ * `%APPDATA%\DisOrder\'.  The trailing delimiter is included.
+ */
+const char *profile_directory(void) {
+  char *t;
+
+  if(profiledir) return profiledir;
+#if _WIN32
+  wchar_t *wpath = 0;
+  char *appdata;
+  if(SHGetKnownFolderPath(&FOLDERID_RoamingAppData, 0, NULL, &wpath) != S_OK) {
+    disorder_error(0, "error calling SHGetKnownFolderPath");
+    return 0;
+  }
+  t = win_wtomb(wpath);
+  CoTaskMemFree(wpath);
+  byte_xasprintf(&profiledir, "%s\\DisOrder", appdata);
+#else
+  struct passwd *pw;
+  if(!(t = getenv("HOME"))) {
+    if(!(pw = getpwuid(getuid())))
+      disorder_error(0, "user not found in password database");
+    t = pw->pw_dir;
+  }
+  byte_xasprintf(&profiledir, "%s/.disorder", t);
+#endif
+  return profiledir;
+}
+
+/** @brief Return the name of a file within the user's profile directory
+ * @param file Basename of the file desired
+ * @return Full path name of selected file.
+ * This currently doesn't do anything very useful with directory separators
+ * within @a file.
+ */
+char *profile_filename(const char *file) {
+  const char *d;
+  char *t;
+  if(!(d = profile_directory())) return 0;
+  byte_xasprintf(&t, "%s" DIRSEP "%s", d, file);
+  return t;
+}
+
+/*
+Local Variables:
+c-basic-offset:2
+comment-column:40
+fill-column:79
+indent-tabs-mode:nil
+End:
+*/