New directory with the beginning of a .dvi backend.

Tue Dec 21 18:55:06 2004  Søren Sandmann  <sandmann@redhat.com>

	* dvi/*: New directory with the beginning of a .dvi backend.

1 files changed, 169 insertions, 0 deletions

diff --git a/dvi/font.cc b/dvi/font.cc
new file mode 100755
index 0000000..512370e
--- /dev/null
+++ b/dvi/font.cc
@@ -0,0 +1,169 @@
+#include "font.hh"
+
+#include "painter.hh"
+#include "dl-pkfont.hh"
+#include "dl-vffont.hh"
+
+using DviLib::FileLoader;
+using DviLib::AbstractFont;
+using DviLib::VfChar;
+using DviLib::PkChar;
+using DviLib::PkFont;
+using DviLib::VfFont;
+
+static char *
+do_run_program (const char *program,
+		GList *args,
+		GError **err)
+{
+    char **argv = g_new (char *, g_list_length (args) + 2);
+    GList *l;
+    int i;
+    char *result;
+
+    i = 0;
+    argv[i++] = g_strdup (program);
+    for (l = args; l; l = l->next)
+	argv[i++] = g_strdup ((char *)l->data);
+    argv[i++] = NULL;
+    
+    g_list_free (args);
+
+
+    /* run it */
+    g_spawn_sync         (NULL, /* working directory */
+			  argv, /* arguments */
+			  NULL, /* environment */
+			  G_SPAWN_SEARCH_PATH, /* flags */
+			  NULL, /* child setup */
+			  NULL, /* user data for child setup */
+			  &result, /* stdout */
+			  NULL, /* stderr */
+			  NULL, /* exit status */
+			  err /* GError */);
+
+    g_strfreev (argv);
+    
+    return result;
+}
+
+
+static char *
+run_program (const char *program,
+	     GError **err,
+	     const char *arg1,
+	     ...)
+{
+    va_list arg_list;
+    GList *arguments = NULL;
+    char *s;
+
+    va_start (arg_list, arg1);
+
+    arguments = g_list_append (arguments, (gpointer)arg1);
+    
+    s = va_arg (arg_list, gchar*);
+    while (s)
+    {
+	arguments = g_list_append (arguments, s);
+	s = va_arg (arg_list, gchar*);
+    }
+
+    va_end (arg_list);
+
+    return do_run_program (program, arguments, err);
+}
+
+static char *
+run_kpsewhich (int dpi,
+	       string format,
+	       string name)
+{
+    char *dpistr = g_strdup_printf ("--dpi=%d", dpi);
+    char *formatstr = g_strdup_printf ("--format=%s", format.c_str());
+    char *namestr = g_strdup (name.c_str());
+    GError *err = NULL;
+    char *result;
+
+    result = run_program ("kpsewhich", &err, dpistr, formatstr, namestr, NULL);
+
+    if (!result)
+    {
+	cout << err->message << endl;
+    }
+    else
+    {
+	g_strstrip (result);
+
+	if (*result == '\0')
+	{
+	    /* Nothing useful returned */
+	    g_free (result);
+	    result = NULL;
+	}
+    }
+
+    cout << "kpsewhich " << dpistr << " " << formatstr << " " << namestr << " " << endl;
+    
+    g_free (dpistr);
+    g_free (formatstr);
+    g_free (namestr);
+
+    return result;
+}
+
+static void
+run_mktexpk (int dpi, string name)
+{
+    char *dpistr = g_strdup_printf ("--bdpi=%d", dpi);
+    char *bdpistr = g_strdup_printf ("--dpi=%d", dpi);
+    char *namestr = g_strdup (name.c_str());
+    char *result;
+
+    result = run_program ("mktexpk", NULL, bdpistr, dpistr, namestr, NULL);
+    if (result)
+	g_free (result);
+
+    g_free (dpistr);
+    g_free (bdpistr);
+    g_free (namestr);
+}
+
+AbstractFont *
+FontFactory::create_font (std::string name, 
+			  int dpi,
+			  int at_size)
+{
+    char *filename;
+
+    /* Find VF */
+    filename = run_kpsewhich (dpi, "vf", name);
+
+    if (filename)
+	return new VfFont (*new FileLoader (filename), at_size);
+
+    /* Try PK */
+    
+    filename = run_kpsewhich (dpi, "pk", name);
+
+    if (filename)
+	return new PkFont (*new FileLoader (filename), at_size);
+
+    /* Generate PK */
+    
+    run_mktexpk (dpi, name);
+
+    cout << "birnan" << endl;
+    
+    /* Try PK again */
+    filename = run_kpsewhich (dpi, "pk", name);
+
+    if (filename)
+	return new PkFont (*new FileLoader (filename), at_size);
+
+    cout << "no luck" << endl;
+    
+    throw (string ("bad font"));
+    
+    return NULL;
+}