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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-03-09 00:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-03-09 00:06:44 +0000 |
commit | 44cf8ec67278bd1ab6c7f83a9993f7a5686a9541 (patch) | |
tree | 5eec4b0d1a3f163d279c3c27c03324ba49fa235a /python/symboliter.c | |
parent | Initial commit. (diff) | |
download | zbar-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.c | 103 |
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); +} |