X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Ffile-name.c;h=cf58b6db1a24a27cb0f38b7d8b79417e62be4ef5;hb=5f7179d6ce731b83d3c84e14190671970dd52918;hp=f861028682f8c3391b440d475579c45e1c9e6f1e;hpb=2c411d651e22704f60f117d944b9380a07d247fe;p=pspp-builds.git

diff --git a/src/data/file-name.c b/src/data/file-name.c
index f8610286..cf58b6db 100644
--- a/src/data/file-name.c
+++ b/src/data/file-name.c
@@ -63,13 +63,13 @@ fn_init (void)
 /* Functions for performing operations on file names. */
 
 
-/* Substitutes $variables in SRC, putting the result in DST,
-   properly handling the case where SRC is a substring of DST.
-   Variables are as defined by GETENV. Supports $var and ${var}
-   syntaxes; $$ substitutes as $. */
+/* Copies from SRC to DST, calling INSERT_VARIABLE to handle each
+   instance of $var or ${var} in SRC.  $$ is replaced by $. */
 void
-fn_interp_vars (struct substring src, const char *(*getenv) (const char *),
-                struct string *dst_)
+fn_interp_vars (struct substring src,
+                void (*insert_variable) (const char *var,
+                                         struct string *dst, void *aux),
+                void *aux, struct string *dst_)
 {
   struct string dst = DS_EMPTY_INITIALIZER;
   int c;
@@ -84,8 +84,7 @@ fn_interp_vars (struct substring src, const char *(*getenv) (const char *),
         else
           {
             struct substring var_name;
-            size_t start;
-            const char *value;
+            char *var;
 
             if (ss_match_char (&src, '('))
               ss_get_until (&src, ')', &var_name);
@@ -95,12 +94,9 @@ fn_interp_vars (struct substring src, const char *(*getenv) (const char *),
               ss_get_chars (&src, MAX (1, ss_span (src, ss_cstr (CC_ALNUM))),
                             &var_name);
 
-            start = ds_length (&dst);
-            ds_put_substring (&dst, var_name);
-            value = getenv (ds_cstr (&dst) + start);
-            ds_truncate (&dst, start);
-
-            ds_put_cstr (&dst, value);
+            var = ss_xstrdup (var_name);
+            insert_variable (var, &dst, aux);
+            free (var);
           }
       }
 
@@ -108,6 +104,14 @@ fn_interp_vars (struct substring src, const char *(*getenv) (const char *),
   ds_destroy (&dst);
 }
 
+static void
+insert_env_var (const char *var, struct string *dst, void *aux UNUSED)
+{
+  const char *value = fn_getenv (var);
+  if (value != NULL)
+    ds_put_cstr (dst, value);
+}
+
 /* Searches for a configuration file with name NAME in the path
    given by PATH, which is environment-interpolated.
    Directories in PATH are delimited by ':'.  Returns the
@@ -126,7 +130,7 @@ fn_search_path (const char *base_name, const char *path_)
 
   /* Interpolate environment variables. */
   ds_init_cstr (&path, path_);
-  fn_interp_vars (ds_ss (&path), fn_getenv, &path);
+  fn_interp_vars (ds_ss (&path), insert_env_var, NULL, &path);
 
   verbose_msg (2, _("searching for \"%s\" in path \"%s\""),
                base_name, ds_cstr (&path));
@@ -454,31 +458,50 @@ fn_hash_identity (const struct file_identity *identity)
   return hash;
 }
 
-
-
-#ifdef WINDOWS32
+#ifdef WIN32
 
 /* Apparently windoze users like to see output dumped into their home directory,
    not the current directory (!) */
 const char *
 default_output_path (void)
 {
-  static const char *home_dir = NULL;
+  static char *path = NULL;
 
-  /* Windows NT defines HOMEDRIVE and HOMEPATH.  But give preference
-     to HOME, because the user can change HOME.  */
-  if (home_dir == NULL)
+  if ( path == NULL)
     {
-      const char *home_drive = getenv ("HOMEDRIVE");
-      const char *home_path = getenv ("HOMEPATH");
+      /* Windows NT defines HOMEDRIVE and HOMEPATH.  But give preference
+	 to HOME, because the user can change HOME.  */
+
+      const char *home_dir = getenv ("HOME");
+      int i;
 
-      if (home_drive != NULL && home_path != NULL)
-	home_dir = xasprintf ("%s%s%c",
-			      home_drive, home_path, DIRECTORY_SEPARATOR);
+      if (home_dir == NULL)
+	{
+	  const char *home_drive = getenv ("HOMEDRIVE");
+	  const char *home_path = getenv ("HOMEPATH");
+
+	  if (home_drive != NULL && home_path != NULL)
+	    home_dir = xasprintf ("%s%s",
+				  home_drive, home_path);
+	}
+
+      if (home_dir == NULL)
+	home_dir = "c:/users/default"; /* poor default */
+
+      /* Copy home_dir into path.  Add a slash at the end but
+         only if there isn't already one there, because Windows
+         treats // specially. */
+      if (home_dir[0] == '\0'
+          || strchr ("/\\", home_dir[strlen (home_dir) - 1]) == NULL)
+        path = xasprintf ("%s%c", home_dir, '/');
       else
-	home_dir = "c:/users/default/"; /* poor default */
+        path = xstrdup (home_dir);
+
+      for(i = 0; i < strlen (path); i++)
+	if (path[i] == '\\') path[i] = '/';
     }
-  return home_dir;
+
+  return path;
 }
 
 #else