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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-03-09 00:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-03-09 00:06:44 +0000
commit44cf8ec67278bd1ab6c7f83a9993f7a5686a9541 (patch)
tree5eec4b0d1a3f163d279c3c27c03324ba49fa235a /python/symboliter.c
parentInitial commit. (diff)
downloadzbar-44cf8ec67278bd1ab6c7f83a9993f7a5686a9541.tar.xz
zbar-44cf8ec67278bd1ab6c7f83a9993f7a5686a9541.zip
Adding upstream version 0.23.93.upstream/0.23.93upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'python/symboliter.c')
-rw-r--r--python/symboliter.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/python/symboliter.c b/python/symboliter.c
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+++ b/python/symboliter.c
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+/*------------------------------------------------------------------------
+ * 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);
+}