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-rw-r--r--Modules/_io/textio.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index 063caa6067..96c8e7b453 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -772,7 +772,7 @@ typedef struct {
encodefunc_t encodefunc;
} encodefuncentry;
-static encodefuncentry encodefuncs[] = {
+static const encodefuncentry encodefuncs[] = {
{"ascii", (encodefunc_t) ascii_encode},
{"iso8859-1", (encodefunc_t) latin1_encode},
{"utf-8", (encodefunc_t) utf8_encode},
@@ -1021,7 +1021,7 @@ _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer,
goto error;
}
else if (PyUnicode_Check(res)) {
- encodefuncentry *e = encodefuncs;
+ const encodefuncentry *e = encodefuncs;
while (e->name != NULL) {
if (!PyUnicode_CompareWithASCIIString(res, e->name)) {
self->encodefunc = e->encodefunc;
@@ -1644,8 +1644,8 @@ _io_TextIOWrapper_read_impl(textio *self, Py_ssize_t n)
/* NOTE: `end` must point to the real end of the Py_UCS4 storage,
that is to the NUL character. Otherwise the function will produce
incorrect results. */
-static char *
-find_control_char(int kind, char *s, char *end, Py_UCS4 ch)
+static const char *
+find_control_char(int kind, const char *s, const char *end, Py_UCS4 ch)
{
if (kind == PyUnicode_1BYTE_KIND) {
assert(ch < 256);
@@ -1665,13 +1665,13 @@ find_control_char(int kind, char *s, char *end, Py_UCS4 ch)
Py_ssize_t
_PyIO_find_line_ending(
int translated, int universal, PyObject *readnl,
- int kind, char *start, char *end, Py_ssize_t *consumed)
+ int kind, const char *start, const char *end, Py_ssize_t *consumed)
{
Py_ssize_t len = ((char*)end - (char*)start)/kind;
if (translated) {
/* Newlines are already translated, only search for \n */
- char *pos = find_control_char(kind, start, end, '\n');
+ const char *pos = find_control_char(kind, start, end, '\n');
if (pos != NULL)
return (pos - start)/kind + 1;
else {
@@ -1683,7 +1683,7 @@ _PyIO_find_line_ending(
/* Universal newline search. Find any of \r, \r\n, \n
* The decoder ensures that \r\n are not split in two pieces
*/
- char *s = start;
+ const char *s = start;
for (;;) {
Py_UCS4 ch;
/* Fast path for non-control chars. The loop always ends
@@ -1713,21 +1713,21 @@ _PyIO_find_line_ending(
/* Assume that readnl is an ASCII character. */
assert(PyUnicode_KIND(readnl) == PyUnicode_1BYTE_KIND);
if (readnl_len == 1) {
- char *pos = find_control_char(kind, start, end, nl[0]);
+ const char *pos = find_control_char(kind, start, end, nl[0]);
if (pos != NULL)
return (pos - start)/kind + 1;
*consumed = len;
return -1;
}
else {
- char *s = start;
- char *e = end - (readnl_len - 1)*kind;
- char *pos;
+ const char *s = start;
+ const char *e = end - (readnl_len - 1)*kind;
+ const char *pos;
if (e < s)
e = s;
while (s < e) {
Py_ssize_t i;
- char *pos = find_control_char(kind, s, end, nl[0]);
+ const char *pos = find_control_char(kind, s, end, nl[0]);
if (pos == NULL || pos >= e)
break;
for (i = 1; i < readnl_len; i++) {
@@ -2689,7 +2689,7 @@ textiowrapper_iternext(textio *self)
_PyIO_str_readline, NULL);
if (line && !PyUnicode_Check(line)) {
PyErr_Format(PyExc_IOError,
- "readline() should have returned an str object, "
+ "readline() should have returned a str object, "
"not '%.200s'", Py_TYPE(line)->tp_name);
Py_DECREF(line);
return NULL;