1 files changed, 103 insertions, 0 deletions
diff --git a/python/symboliter.c b/python/symboliter.c
new file mode 100644
index 0000000..6ebd040
--- /dev/null
+++ b/python/symboliter.c
@@ -0,0 +1,103 @@
+/*------------------------------------------------------------------------
+ *  Copyright 2009 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+
+#include "zbarmodule.h"
+
+static char symboliter_doc[] =
+    PyDoc_STR("symbol iterator.\n"
+	      "\n"
+	      "iterates over decode results attached to an image.");
+
+static int symboliter_traverse(zbarSymbolIter *self, visitproc visit, void *arg)
+{
+    Py_VISIT(self->syms);
+    return (0);
+}
+
+static int symboliter_clear(zbarSymbolIter *self)
+{
+    if (self->zsym) {
+	zbar_symbol_t *zsym = (zbar_symbol_t *)self->zsym;
+	self->zsym	    = NULL;
+	zbar_symbol_ref(zsym, -1);
+    }
+    Py_CLEAR(self->syms);
+    return (0);
+}
+
+static void symboliter_dealloc(zbarSymbolIter *self)
+{
+    symboliter_clear(self);
+    ((PyObject *)self)->ob_type->tp_free((PyObject *)self);
+}
+
+static zbarSymbolIter *symboliter_iter(zbarSymbolIter *self)
+{
+    Py_INCREF(self);
+    return (self);
+}
+
+static zbarSymbol *symboliter_iternext(zbarSymbolIter *self)
+{
+    if (self->zsym) {
+	zbar_symbol_t *zsym = (zbar_symbol_t *)self->zsym;
+	zbar_symbol_ref(zsym, -1);
+	self->zsym = zbar_symbol_next(self->zsym);
+    } else if (self->syms->zsyms)
+	self->zsym = zbar_symbol_set_first_symbol(self->syms->zsyms);
+    else
+	self->zsym = NULL;
+
+    zbar_symbol_t *zsym = (zbar_symbol_t *)self->zsym;
+    if (!zsym)
+	return (NULL);
+    zbar_symbol_ref(zsym, 1);
+    return (zbarSymbol_FromSymbol(self->zsym));
+}
+
+PyTypeObject zbarSymbolIter_Type = {
+    PyVarObject_HEAD_INIT(NULL, 0).tp_name = "zbar.SymbolIter",
+
+    .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
+
+    .tp_doc	  = symboliter_doc,
+    .tp_basicsize = sizeof(zbarSymbolIter),
+    .tp_traverse  = (traverseproc)symboliter_traverse,
+    .tp_clear	  = (inquiry)symboliter_clear,
+    .tp_dealloc	  = (destructor)symboliter_dealloc,
+    .tp_iter	  = (getiterfunc)symboliter_iter,
+    .tp_iternext  = (iternextfunc)symboliter_iternext,
+};
+
+zbarSymbolIter *zbarSymbolIter_FromSymbolSet(zbarSymbolSet *syms)
+{
+    zbarSymbolIter *self;
+    self = PyObject_GC_New(zbarSymbolIter, &zbarSymbolIter_Type);
+    if (!self)
+	return (NULL);
+
+    Py_INCREF(syms);
+    self->syms = syms;
+    self->zsym = NULL;
+    return (self);
+}