return p + nlen;
}
-/**
- * regex_sub() - Replace a regex pattern with a string
- *
- * @data: Buffer containing the string to update
- * @data_size: Size of buffer (must be large enough for the new string)
- * @nbuf: Back-reference buffer
- * @nbuf_size: Size of back-reference buffer (must be larger enough for @s plus
- * all back-reference expansions)
- * @r: Regular expression to find
- * @s: String to replace with
- * @global: true to replace all matches in @data, false to replace just the
- * first
- * @return 0 if OK, 1 on error
- */
-static int regex_sub(char *data, uint data_size, char *nbuf, uint nbuf_size,
- const char *r, const char *s, bool global)
+int setexpr_regex_sub(char *data, uint data_size, char *nbuf, uint nbuf_size,
+ const char *r, const char *s, bool global)
{
struct slre slre;
char *datap = data;
strcpy(data, t);
- ret = regex_sub(data, SLRE_BUFSZ, nbuf, SLRE_PATSZ, r, s, global);
+ ret = setexpr_regex_sub(data, SLRE_BUFSZ, nbuf, SLRE_PATSZ, r, s,
+ global);
if (ret)
return 1;
char *const argv[]);
#endif
+/**
+ * setexpr_regex_sub() - Replace a regex pattern with a string
+ *
+ * @data: Buffer containing the string to update
+ * @data_size: Size of buffer (must be large enough for the new string)
+ * @nbuf: Back-reference buffer
+ * @nbuf_size: Size of back-reference buffer (must be larger enough for @s plus
+ * all back-reference expansions)
+ * @r: Regular expression to find
+ * @s: String to replace with
+ * @global: true to replace all matches in @data, false to replace just the
+ * first
+ * @return 0 if OK, 1 on error
+ */
+int setexpr_regex_sub(char *data, uint data_size, char *nbuf, uint nbuf_size,
+ const char *r, const char *s, bool global);
+
/*
* Error codes that commands return to cmd_process(). We use the standard 0
* and 1 for success and failure, but add one more case - failure with a
}
SETEXPR_TEST(setexpr_test_regex_inc, UT_TESTF_CONSOLE_REC);
+/* Test setexpr_regex_sub() directly to check buffer usage */
+static int setexpr_test_sub(struct unit_test_state *uts)
+{
+ char *buf, *nbuf;
+ int i;
+
+ buf = map_sysmem(0, BUF_SIZE);
+ nbuf = map_sysmem(0x1000, BUF_SIZE);
+
+ /* Add a pattern so we can check the buffer limits */
+ memset(buf, '\xff', BUF_SIZE);
+ memset(nbuf, '\xff', BUF_SIZE);
+ for (i = BUF_SIZE; i < 0x1000; i++) {
+ buf[i] = i & 0xff;
+ nbuf[i] = i & 0xff;
+ }
+ strcpy(buf, "this is a test");
+
+ /*
+ * This is a regression test, since a bug was found in the use of
+ * memmove() in setexpr
+ */
+ ut_assertok(setexpr_regex_sub(buf, BUF_SIZE, nbuf, BUF_SIZE, "is",
+ "us it is longer", true));
+ ut_asserteq_str("thus it is longer us it is longer a test", buf);
+
+ /* The following checks fail at present due to a bug in setexpr */
+ return 0;
+ for (i = BUF_SIZE; i < 0x1000; i++) {
+ ut_assertf(buf[i] == (char)i,
+ "buf byte at %x should be %02x, got %02x)\n",
+ i, i & 0xff, (u8)buf[i]);
+ ut_assertf(nbuf[i] == (char)i,
+ "nbuf byte at %x should be %02x, got %02x)\n",
+ i, i & 0xff, (u8)nbuf[i]);
+ }
+
+ unmap_sysmem(buf);
+
+ return 0;
+}
+SETEXPR_TEST(setexpr_test_sub, UT_TESTF_CONSOLE_REC);
+
+/* Test setexpr_regex_sub() with back references */
+static int setexpr_test_backref(struct unit_test_state *uts)
+{
+ char *buf, *nbuf;
+ int i;
+
+ buf = map_sysmem(0, BUF_SIZE);
+ nbuf = map_sysmem(0x1000, BUF_SIZE);
+
+ /* Add a pattern so we can check the buffer limits */
+ memset(buf, '\xff', BUF_SIZE);
+ memset(nbuf, '\xff', BUF_SIZE);
+ for (i = BUF_SIZE; i < 0x1000; i++) {
+ buf[i] = i & 0xff;
+ nbuf[i] = i & 0xff;
+ }
+ strcpy(buf, "this is surely a test is it? yes this is indeed a test");
+
+ /*
+ * This is a regression test, since a bug was found in the use of
+ * memmove() in setexpr
+ */
+ ut_assertok(setexpr_regex_sub(buf, BUF_SIZE, nbuf, BUF_SIZE,
+ "(this) (is) (surely|indeed)",
+ "us \\1 \\2 \\3!", true));
+
+ /* The following checks fail at present due to bugs in setexpr */
+ return 0;
+ ut_asserteq_str("us this is surely! a test is it? yes us this is indeed! a test",
+ buf);
+
+ for (i = BUF_SIZE; i < 0x1000; i++) {
+ ut_assertf(buf[i] == (char)i,
+ "buf byte at %x should be %02x, got %02x)\n",
+ i, i & 0xff, (u8)buf[i]);
+ ut_assertf(nbuf[i] == (char)i,
+ "nbuf byte at %x should be %02x, got %02x)\n",
+ i, i & 0xff, (u8)nbuf[i]);
+ }
+
+ unmap_sysmem(buf);
+
+ return 0;
+}
+SETEXPR_TEST(setexpr_test_backref, UT_TESTF_CONSOLE_REC);
+
int do_ut_setexpr(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct unit_test *tests = ll_entry_start(struct unit_test,