--- /dev/null
+/*
+ This file is not licenced under the GPL like the rest of the code.
+ Its is under the MIT license, to encourage reuse by cut-and-paste.
+
+ Copyright (c) 2007 Red Hat, Inc.
+
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation files
+ (the "Software"), to deal in the Software without restriction,
+ including without limitation the rights to use, copy, modify, merge,
+ publish, distribute, sublicense, and/or sell copies of the Software,
+ and to permit persons to whom the Software is furnished to do so,
+ subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/**
+ * xdg_user_dir_lookup_with_fallback:
+ * @type: a string specifying the type of directory
+ * @fallback: value to use if the directory isn't specified by the user
+ * @returns: a newly allocated absolute pathname
+ *
+ * Looks up a XDG user directory of the specified type.
+ * Example of types are "DESKTOP" and "DOWNLOAD".
+ *
+ * In case the user hasn't specified any directory for the specified
+ * type the value returned is @fallback.
+ *
+ * The return value is newly allocated and must be freed with
+ * free(). The return value is never NULL if @fallback != NULL, unless
+ * out of memory.
+ **/
+static char *
+xdg_user_dir_lookup_with_fallback (const char *type, const char *fallback)
+{
+ FILE *file;
+ char *home_dir, *config_home, *config_file;
+ char buffer[512];
+ char *user_dir;
+ char *p, *d;
+ int len;
+ int relative;
+
+ home_dir = getenv ("HOME");
+
+ if (home_dir == NULL)
+ goto error;
+
+ config_home = getenv ("XDG_CONFIG_HOME");
+ if (config_home == NULL || config_home[0] == 0)
+ {
+ config_file = (char*) malloc (strlen (home_dir) + strlen ("/.config/user-dirs.dirs") + 1);
+ if (config_file == NULL)
+ goto error;
+
+ strcpy (config_file, home_dir);
+ strcat (config_file, "/.config/user-dirs.dirs");
+ }
+ else
+ {
+ config_file = (char*) malloc (strlen (config_home) + strlen ("/user-dirs.dirs") + 1);
+ if (config_file == NULL)
+ goto error;
+
+ strcpy (config_file, config_home);
+ strcat (config_file, "/user-dirs.dirs");
+ }
+
+ file = fopen (config_file, "r");
+ free (config_file);
+ if (file == NULL)
+ goto error;
+
+ user_dir = NULL;
+ while (fgets (buffer, sizeof (buffer), file))
+ {
+ /* Remove newline at end */
+ len = strlen (buffer);
+ if (len > 0 && buffer[len-1] == '\n')
+ buffer[len-1] = 0;
+
+ p = buffer;
+ while (*p == ' ' || *p == '\t')
+ p++;
+
+ if (strncmp (p, "XDG_", 4) != 0)
+ continue;
+ p += 4;
+ if (strncmp (p, type, strlen (type)) != 0)
+ continue;
+ p += strlen (type);
+ if (strncmp (p, "_DIR", 4) != 0)
+ continue;
+ p += 4;
+
+ while (*p == ' ' || *p == '\t')
+ p++;
+
+ if (*p != '=')
+ continue;
+ p++;
+
+ while (*p == ' ' || *p == '\t')
+ p++;
+
+ if (*p != '"')
+ continue;
+ p++;
+
+ relative = 0;
+ if (strncmp (p, "$HOME/", 6) == 0)
+ {
+ p += 6;
+ relative = 1;
+ }
+ else if (*p != '/')
+ continue;
+
+ free (user_dir);
+ if (relative)
+ {
+ user_dir = (char*) malloc (strlen (home_dir) + 1 + strlen (p) + 1);
+ if (user_dir == NULL)
+ goto error2;
+
+ strcpy (user_dir, home_dir);
+ strcat (user_dir, "/");
+ }
+ else
+ {
+ user_dir = (char*) malloc (strlen (p) + 1);
+ if (user_dir == NULL)
+ goto error2;
+
+ *user_dir = 0;
+ }
+
+ d = user_dir + strlen (user_dir);
+ while (*p && *p != '"')
+ {
+ if ((*p == '\\') && (*(p+1) != 0))
+ p++;
+ *d++ = *p++;
+ }
+ *d = 0;
+ }
+error2:
+ fclose (file);
+
+ if (user_dir)
+ return user_dir;
+
+ error:
+ if (fallback)
+ return strdup (fallback);
+ return NULL;
+}
+
+/**
+ * xdg_user_dir_lookup:
+ * @type: a string specifying the type of directory
+ * @returns: a newly allocated absolute pathname
+ *
+ * Looks up a XDG user directory of the specified type.
+ * Example of types are "DESKTOP" and "DOWNLOAD".
+ *
+ * The return value is always != NULL (unless out of memory),
+ * and if a directory
+ * for the type is not specified by the user the default
+ * is the home directory. Except for DESKTOP which defaults
+ * to ~/Desktop.
+ *
+ * The return value is newly allocated and must be freed with
+ * free().
+ **/
+static char *
+xdg_user_dir_lookup (const char *type)
+{
+ char *dir, *home_dir, *user_dir;
+
+ dir = xdg_user_dir_lookup_with_fallback (type, NULL);
+ if (dir != NULL)
+ return dir;
+
+ home_dir = getenv ("HOME");
+
+ if (home_dir == NULL)
+ return strdup ("/tmp");
+
+ /* Special case desktop for historical compatibility */
+ if (strcmp (type, "DESKTOP") == 0)
+ {
+ user_dir = (char*) malloc (strlen (home_dir) + strlen ("/Desktop") + 1);
+ if (user_dir == NULL)
+ return NULL;
+
+ strcpy (user_dir, home_dir);
+ strcat (user_dir, "/Desktop");
+ return user_dir;
+ }
+
+ return strdup (home_dir);
+}
+
+#ifdef STANDALONE_XDG_USER_DIR_LOOKUP
+int
+main (int argc, char *argv[])
+{
+ if (argc != 2)
+ {
+ fprintf (stderr, "Usage %s <dir-type>\n", argv[0]);
+ exit (1);
+ }
+
+ printf ("%s\n", xdg_user_dir_lookup (argv[1]));
+ return 0;
+}
+#endif
projects / thirdparty / tvheadend.git / commitdiff
