g.tempfile: allow creation of temporary directories

general/g.tempfile/g.tempfile.html

@@ -10,10 +10,10 @@ <h2>DESCRIPTION</h2>
 
 <p>
 <em>g.tempfile</em>
-creates an unique file and prints the name. The user is required to provide
-a process-id which will be used as part of the name of the file.
-Most Unix shells provide a way to get the process id of the current shell.
-For /bin/sh and /bin/csh this is $$.
+creates an unique file or directory (<b>-f</b>) and prints the name.
+The user is required to provide a process-id which will be used as part of
+the name of the file or directory. Most Unix shells provide a way to get the
+process id of the current shell. For /bin/sh and /bin/csh this is $$.
 It is recommended that $$ be specified as the process-id for
 <em>g.tempfile</em>.
 
@@ -23,6 +23,11 @@ <h2>EXAMPLE</h2>
 <div class="code"><pre>
 temp1=`g.tempfile pid=$$`
 temp2=`g.tempfile pid=$$`
+# Get the tempile path but do not create it
+temp3=`g.tempfile -d pid=$$`
+# Create a temporary directory
+temp3=`g.tempfile -f pid=$$`
+
 </pre></div>
 For /bin/csh scripts, the following can be used:
 <div class="code"><pre>

general/g.tempfile/main.c

@@ -29,6 +29,7 @@ int main(int argc, char *argv[])
     struct GModule *module;
     struct Option *pid;
     struct Flag *dry_run;
+    struct Flag *directory;
     char *tempfile;
     int p;
 
@@ -52,6 +53,13 @@ int main(int argc, char *argv[])
     dry_run->description =
         _("Dry run - don't create a file, just prints it's file name");
 
+    directory = G_define_flag();
+    directory->key = 'f';
+    directory->description =
+        _("Folder mode - create a temporary directory, not a file");
+
+    G_option_exclusive(dry_run, directory, NULL);
+
     G_disable_interactive();
     if (G_parser(argc, argv))
         exit(EXIT_FAILURE);
@@ -63,8 +71,12 @@ int main(int argc, char *argv[])
     tempfile = G_tempfile_pid(p);
 
     /* create tempfile so next run of this program will create a unique name */
-    if (!dry_run->answer)
-        close(creat(tempfile, 0666));
+    if (!dry_run->answer) {
+        if (directory->answer)
+            mkdir(tempfile, 0777);
+        else
+            close(creat(tempfile, 0666));
+    }
     fprintf(stdout, "%s\n", tempfile);
 
     exit(EXIT_SUCCESS);

python/grass/script/core.py

@@ -955,11 +955,13 @@ def tempfile(create=True, env=None):
 
 
 def tempdir(env=None):
-    """Returns the name of a temporary dir, created with g.tempfile."""
-    tmp = tempfile(create=False, env=env)
-    os.mkdir(tmp)
+    """Returns the name of a temporary directory, created with g.tempfile.
 
-    return tmp
+    :param env: environment
+
+    :return: path to a temporary directory
+    """
+    return read_command("g.tempfile", flags="f", pid=os.getpid(), env=env).strip()
 
 
 def tempname(length, lowercase=False):