Hi,
I tried "pango-view" in a script to render text to a file, and I found
that upon exit, the file doesn't exist for some fraction of a second,
which causes problems for the script when it tries to do something
with the output.
To illustrate,
$ rm -f text.ppm; pango-view --backend=ft2 -q -o text.ppm -t 'Hi there!'; \
ls -l text.ppm; sleep 1; ls -l text.ppm
ls: cannot access text.ppm: No such file or directory
-rw-r--r-- 1 guinan guinan 18242 Apr 23 13:19 text.ppm
See attached patch for a fix. I added a waitpid() call similar to the
one later in the same file.
-Jamie
--- pango-1.21.0/pango-view/viewer-main.c.ori 2007-07-05 17:30:28.000000000 -0400
+++ pango-1.21.0/pango-view/viewer-main.c 2008-04-23 13:01:58.000000000 -0400
@@ -69,6 +69,7 @@
else
{
FILE *stream;
+ GPid pid = 0;
if (view->write_suffix && g_str_has_suffix (opt_output, view->write_suffix))
{
@@ -86,15 +87,22 @@
convert_argv[2] = opt_output;
if (!g_spawn_async_with_pipes (NULL, (gchar **)convert_argv, NULL,
+ G_SPAWN_DO_NOT_REAP_CHILD |
G_SPAWN_SEARCH_PATH |
G_SPAWN_STDOUT_TO_DEV_NULL |
G_SPAWN_STDERR_TO_DEV_NULL,
- NULL, NULL, NULL, &fd, NULL, NULL, &error))
+ NULL, NULL, &pid, &fd, NULL, NULL, &error))
fail ("When running ImageMagick 'convert' command: %s\n", error->message);
stream = fdopen (fd, "wb");
}
view->write (instance, surface, stream, width, height);
fclose (stream);
+#ifdef G_OS_UNIX
+ if (pid)
+ {
+ waitpid (pid, NULL, 0);
+ }
+#endif
}
}
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