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Handle Sane option strings as Unicode strings

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The Sane documentation seems to imply that these option strings contain
Latin-1 text, not byte data, so we decode it and present it to the user
that way.
This commit is contained in:
Brian J. Crowell 2013-01-09 23:46:45 -06:00 committed by Brian Crowell
parent fb2ccb15a7
commit e49cba9b32
1 changed files with 30 additions and 3 deletions
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33
Sane/_sane.c
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@ -243,7 +243,11 @@ SaneDev_get_options(SaneDevObject *self, PyObject *args)
constraint=PyList_New(0); constraint=PyList_New(0);
for(j=0; d->constraint.string_list[j]!=NULL; j++) for(j=0; d->constraint.string_list[j]!=NULL; j++)
PyList_Append(constraint, PyList_Append(constraint,
PyBytes_FromString(d->constraint.string_list[j])); #if PY_MAJOR_VERSION >= 3
PyUnicode_DecodeLatin1(d->constraint.string_list[j], strlen(d->constraint.string_list[j]), NULL));
#else
PyString_FromString(d->constraint.string_list[j]));
#endif
break; break;
} }
value=Py_BuildValue("isssiiiiO", i, d->name, d->title, d->desc, value=Py_BuildValue("isssiiiiO", i, d->name, d->title, d->desc,
@ -294,7 +298,11 @@ SaneDev_get_option(SaneDevObject *self, PyObject *args)
value=Py_BuildValue("d", SANE_UNFIX((*((SANE_Fixed*)v))) ); value=Py_BuildValue("d", SANE_UNFIX((*((SANE_Fixed*)v))) );
break; break;
case(SANE_TYPE_STRING): case(SANE_TYPE_STRING):
#if PY_MAJOR_VERSION >= 3
value=PyUnicode_DecodeLatin1((const char *) v, strlen((const char *) v), NULL);
#else
value=Py_BuildValue("s", v); value=Py_BuildValue("s", v);
#endif
break; break;
case(SANE_TYPE_BUTTON): case(SANE_TYPE_BUTTON):
case(SANE_TYPE_GROUP): case(SANE_TYPE_GROUP):
@ -355,14 +363,33 @@ SaneDev_set_option(SaneDevObject *self, PyObject *args)
*( (SANE_Fixed*)v) = SANE_FIX(PyFloat_AsDouble(value)); *( (SANE_Fixed*)v) = SANE_FIX(PyFloat_AsDouble(value));
break; break;
case(SANE_TYPE_STRING): case(SANE_TYPE_STRING):
if (!PyBytes_Check(value)) #if PY_MAJOR_VERSION >= 3
if (!PyUnicode_Check(value))
{ {
PyErr_SetString(PyExc_TypeError, "SANE_STRING requires a string"); PyErr_SetString(PyExc_TypeError, "SANE_STRING requires a string");
free(v); free(v);
return NULL; return NULL;
} }
strncpy(v, PyBytes_AsString(value), d->size-1); {
PyObject *encoded = PyUnicode_AsLatin1String(value);
if (!encoded)
return NULL;
strncpy(v, PyBytes_AsString(encoded), d->size-1);
((char*)v)[d->size-1] = 0; ((char*)v)[d->size-1] = 0;
Py_DECREF(encoded);
}
#else
if (!PyString_Check(value))
{
PyErr_SetString(PyExc_TypeError, "SANE_STRING requires a string");
free(v);
return NULL;
}
strncpy(v, PyString_AsString(value), d->size-1);
((char*)v)[d->size-1] = 0;
#endif
break; break;
case(SANE_TYPE_BUTTON): case(SANE_TYPE_BUTTON):
case(SANE_TYPE_GROUP): case(SANE_TYPE_GROUP):