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Streamlined code for trim, ltrim and rtrim

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Portability fixes
This commit is contained in:
monty@mysql.com
2005-01-02 23:31:37 +02:00
parent 9bb8f6d031
commit 1e88bdbf90
4 changed files with 87 additions and 51 deletions
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9
mysql-test/r/func_str.result
View File

@ -48,6 +48,9 @@ tcx.se .se
select concat(':',ltrim(' left '),':',rtrim(' right '),':');
concat(':',ltrim(' left '),':',rtrim(' right '),':')
:left : right:
select concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':');
concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':')
:left : right:
select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':')
:left: right:
@ -703,3 +706,9 @@ NULL
select trim('xyz' from null) as "must_be_null";
must_be_null
NULL
select trim(leading NULL from 'kate') as "must_be_null";
must_be_null
NULL
select trim(trailing NULL from 'xyz') as "must_be_null";
must_be_null
NULL

3
mysql-test/t/func_str.test
View File

@ -25,6 +25,7 @@ select substring_index('www.tcx.se','tcx',1),substring_index('www.tcx.se','tcx',
select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
select concat(':',ltrim(' left '),':',rtrim(' right '),':');
select concat(':',trim(leading from ' left '),':',trim(trailing from ' right '),':');
select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
select concat(':',trim(' m '),':',trim(BOTH FROM ' y '),':',trim('*' FROM '*s*'),':');
select concat(':',trim(BOTH 'ab' FROM 'ababmyabab'),':',trim(BOTH '*' FROM '***sql'),':');
@ -443,3 +444,5 @@ select quote(trim(concat(' ', 'a')));
#
select trim(null from 'kate') as "must_be_null";
select trim('xyz' from null) as "must_be_null";
select trim(leading NULL from 'kate') as "must_be_null";
select trim(trailing NULL from 'xyz') as "must_be_null";

76
sql/item_strfunc.cc
View File

@ -1185,21 +1185,29 @@ String *Item_func_substr_index::val_str(String *str)
String *Item_func_ltrim::val_str(String *str)
{
DBUG_ASSERT(fixed == 1);
String *res =args[0]->val_str(str);
if ((null_value=args[0]->null_value))
return 0; /* purecov: inspected */
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff),res->charset());
String *remove_str= (arg_count==2) ? args[1]->val_str(&tmp) : &remove;
char buff[MAX_FIELD_WIDTH], *ptr, *end;
String tmp(buff,sizeof(buff),system_charset_info);
String *res, *remove_str;
uint remove_length;
LINT_INIT(remove_length);
if (!remove_str || (remove_length=remove_str->length()) == 0 ||
res= args[0]->val_str(str);
if ((null_value=args[0]->null_value))
return 0;
remove_str= &remove; /* Default value. */
if (arg_count == 2)
{
remove_str= args[1]->val_str(&tmp);
if ((null_value= args[1]->null_value))
return 0;
}
if ((remove_length= remove_str->length()) == 0 ||
remove_length > res->length())
return res;
char *ptr=(char*) res->ptr();
char *end=ptr+res->length();
ptr= (char*) res->ptr();
end= ptr+res->length();
if (remove_length == 1)
{
char chr=(*remove_str)[0];
@ -1224,21 +1232,29 @@ String *Item_func_ltrim::val_str(String *str)
String *Item_func_rtrim::val_str(String *str)
{
DBUG_ASSERT(fixed == 1);
String *res =args[0]->val_str(str);
if ((null_value=args[0]->null_value))
return 0; /* purecov: inspected */
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff),res->charset());
String *remove_str= (arg_count==2) ? args[1]->val_str(&tmp) : &remove;
char buff[MAX_FIELD_WIDTH], *ptr, *end;
String tmp(buff, sizeof(buff), system_charset_info);
String *res, *remove_str;
uint remove_length;
LINT_INIT(remove_length);
if (!remove_str || (remove_length=remove_str->length()) == 0 ||
res= args[0]->val_str(str);
if ((null_value=args[0]->null_value))
return 0;
remove_str= &remove; /* Default value. */
if (arg_count == 2)
{
remove_str= args[1]->val_str(&tmp);
if ((null_value= args[1]->null_value))
return 0;
}
if ((remove_length= remove_str->length()) == 0 ||
remove_length > res->length())
return res;
char *ptr=(char*) res->ptr();
char *end=ptr+res->length();
ptr= (char*) res->ptr();
end= ptr+res->length();
#ifdef USE_MB
char *p=ptr;
register uint32 l;
@ -1297,31 +1313,31 @@ String *Item_func_rtrim::val_str(String *str)
String *Item_func_trim::val_str(String *str)
{
DBUG_ASSERT(fixed == 1);
String *res =args[0]->val_str(str);
if ((null_value=args[0]->null_value))
return 0; /* purecov: inspected */
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff),res->charset());
char buff[MAX_FIELD_WIDTH], *ptr, *end;
const char *r_ptr;
String tmp(buff, sizeof(buff), system_charset_info);
String *res, *remove_str;
uint remove_length;
LINT_INIT(remove_length);
String *remove_str; /* The string to remove from res. */
res= args[0]->val_str(str);
if ((null_value=args[0]->null_value))
return 0;
remove_str= &remove; /* Default value. */
if (arg_count == 2)
{
remove_str= args[1]->val_str(&tmp);
if ((null_value= args[1]->null_value))
return 0;
}
else
remove_str= &remove; /* Default value. */
if (!remove_str || (remove_length=remove_str->length()) == 0 ||
if ((remove_length= remove_str->length()) == 0 ||
remove_length > res->length())
return res;
char *ptr=(char*) res->ptr();
char *end=ptr+res->length();
const char *r_ptr=remove_str->ptr();
ptr= (char*) res->ptr();
end= ptr+res->length();
r_ptr= remove_str->ptr();
while (ptr+remove_length <= end && !memcmp(ptr,r_ptr,remove_length))
ptr+=remove_length;
#ifdef USE_MB

50
tests/client_test.c
View File

@ -734,8 +734,8 @@ static void verify_st_affected_rows(MYSQL_STMT *stmt, ulonglong exp_count)
{
ulonglong affected_rows= mysql_stmt_affected_rows(stmt);
if (!opt_silent)
fprintf(stdout, "\n total affected rows: `%lld` (expected: `%lld`)",
affected_rows, exp_count);
fprintf(stdout, "\n total affected rows: `%ld` (expected: `%ld`)",
(long) affected_rows, (long) exp_count);
DIE_UNLESS(affected_rows == exp_count);
}
@ -746,8 +746,8 @@ static void verify_affected_rows(ulonglong exp_count)
{
ulonglong affected_rows= mysql_affected_rows(mysql);
if (!opt_silent)
fprintf(stdout, "\n total affected rows: `%lld` (expected: `%lld`)",
affected_rows, exp_count);
fprintf(stdout, "\n total affected rows: `%ld` (expected: `%ld`)",
(long) affected_rows, (long) exp_count);
DIE_UNLESS(affected_rows == exp_count);
}
@ -780,8 +780,8 @@ static void execute_prepare_query(const char *query, ulonglong exp_count)
affected_rows= mysql_stmt_affected_rows(stmt);
if (!opt_silent)
fprintf(stdout, "\n total affected rows: `%lld` (expected: `%lld`)",
affected_rows, exp_count);
fprintf(stdout, "\n total affected rows: `%ld` (expected: `%ld`)",
(long) affected_rows, (long) exp_count);
DIE_UNLESS(affected_rows == exp_count);
mysql_stmt_close(stmt);
@ -1017,7 +1017,8 @@ my_bool fetch_n(const char **query_list, unsigned query_count)
fprintf(stderr,
"Got error reading rows from statement %d,\n"
"query is: %s,\n"
"error message: %s", fetch - fetch_array, fetch->query,
"error message: %s", (int) (fetch - fetch_array),
fetch->query,
mysql_stmt_error(fetch->handle));
error_count++;
}
@ -1479,6 +1480,7 @@ static void test_prepare()
double double_data, o_double_data;
ulong length[7], len;
my_bool is_null[7];
char llbuf[22];
MYSQL_BIND bind[7];
myheader("test_prepare");
@ -1596,7 +1598,8 @@ static void test_prepare()
fprintf(stdout, "\n\t tiny : %d (%lu)", tiny_data, length[0]);
fprintf(stdout, "\n\t short : %d (%lu)", small_data, length[3]);
fprintf(stdout, "\n\t int : %d (%lu)", int_data, length[2]);
fprintf(stdout, "\n\t big : %lld (%lu)", big_data, length[4]);
fprintf(stdout, "\n\t big : %s (%lu)", llstr(big_data, llbuf),
length[4]);
fprintf(stdout, "\n\t float : %f (%lu)", real_data, length[5]);
fprintf(stdout, "\n\t double : %f (%lu)", double_data, length[6]);
@ -3446,7 +3449,7 @@ static void test_bind_result_ext()
MYSQL_BIND bind[8];
ulong length[8];
my_bool is_null[8];
char llbuf[22];
myheader("test_bind_result_ext");
rc= mysql_query(mysql, "DROP TABLE IF EXISTS test_bind_result");
@ -3520,7 +3523,7 @@ static void test_bind_result_ext()
fprintf(stdout, "\n data (tiny) : %d", t_data);
fprintf(stdout, "\n data (short) : %d", s_data);
fprintf(stdout, "\n data (int) : %d", i_data);
fprintf(stdout, "\n data (big) : %lld", b_data);
fprintf(stdout, "\n data (big) : %s", llstr(b_data, llbuf));
fprintf(stdout, "\n data (float) : %f", f_data);
fprintf(stdout, "\n data (double) : %f", d_data);
@ -5286,7 +5289,7 @@ static void test_manual_sample()
affected_rows= mysql_stmt_affected_rows(stmt);
if (!opt_silent)
fprintf(stdout, "\n total affected rows: %lld", affected_rows);
fprintf(stdout, "\n total affected rows: %ld", (ulong) affected_rows);
if (affected_rows != 1) /* validate affected rows */
{
fprintf(stderr, "\n invalid affected rows by MySQL");
@ -5311,7 +5314,7 @@ static void test_manual_sample()
affected_rows= mysql_stmt_affected_rows(stmt);
if (!opt_silent)
fprintf(stdout, "\n total affected rows: %lld", affected_rows);
fprintf(stdout, "\n total affected rows: %ld", (ulong) affected_rows);
if (affected_rows != 1) /* validate affected rows */
{
fprintf(stderr, "\n invalid affected rows by MySQL");
@ -5467,9 +5470,9 @@ DROP TABLE IF EXISTS test_multi_tab";
mysql_free_result(result);
}
else if (!opt_silent)
fprintf(stdout, "OK, %lld row(s) affected, %d warning(s)\n",
mysql_affected_rows(mysql_local),
mysql_warning_count(mysql_local));
fprintf(stdout, "OK, %ld row(s) affected, %ld warning(s)\n",
(ulong) mysql_affected_rows(mysql_local),
(ulong) mysql_warning_count(mysql_local));
exp_value= (uint) mysql_affected_rows(mysql_local);
if (rows[count] != exp_value)
@ -6549,7 +6552,7 @@ static void test_ushort_bug()
ulonglong longlong_value;
int rc;
uchar tiny_value;
char llbuf[22];
myheader("test_ushort_bug");
rc= mysql_query(mysql, "DROP TABLE IF EXISTS test_ushort");
@ -6601,7 +6604,8 @@ static void test_ushort_bug()
{
fprintf(stdout, "\n ushort : %d (%ld)", short_value, s_length);
fprintf(stdout, "\n ulong : %lu (%ld)", (ulong) long_value, l_length);
fprintf(stdout, "\n longlong : %lld (%ld)", longlong_value, ll_length);
fprintf(stdout, "\n longlong : %s (%ld)", llstr(longlong_value, llbuf),
ll_length);
fprintf(stdout, "\n tinyint : %d (%ld)", tiny_value, t_length);
}
@ -6636,6 +6640,7 @@ static void test_sshort_bug()
ulonglong longlong_value;
int rc;
uchar tiny_value;
char llbuf[22];
myheader("test_sshort_bug");
@ -6686,7 +6691,8 @@ static void test_sshort_bug()
{
fprintf(stdout, "\n sshort : %d (%ld)", short_value, s_length);
fprintf(stdout, "\n slong : %ld (%ld)", (long) long_value, l_length);
fprintf(stdout, "\n longlong : %lld (%ld)", longlong_value, ll_length);
fprintf(stdout, "\n longlong : %s (%ld)", llstr(longlong_value, llbuf),
ll_length);
fprintf(stdout, "\n tinyint : %d (%ld)", tiny_value, t_length);
}
@ -6721,6 +6727,7 @@ static void test_stiny_bug()
ulonglong longlong_value;
int rc;
uchar tiny_value;
char llbuf[22];
myheader("test_stiny_bug");
@ -6770,7 +6777,8 @@ static void test_stiny_bug()
{
fprintf(stdout, "\n sshort : %d (%ld)", short_value, s_length);
fprintf(stdout, "\n slong : %ld (%ld)", (long) long_value, l_length);
fprintf(stdout, "\n longlong : %lld (%ld)", longlong_value, ll_length);
fprintf(stdout, "\n longlong : %s (%ld)", llstr(longlong_value, llbuf),
ll_length);
fprintf(stdout, "\n tinyint : %d (%ld)", tiny_value, t_length);
}
@ -11263,7 +11271,7 @@ static void test_bug5399()
for (stmt= stmt_list; stmt != stmt_list + NUM_OF_USED_STMT; ++stmt)
{
sprintf(buff, "select %d", stmt - stmt_list);
sprintf(buff, "select %d", (int) (stmt - stmt_list));
*stmt= mysql_stmt_init(mysql);
rc= mysql_stmt_prepare(*stmt, buff, strlen(buff));
check_execute(*stmt, rc);
@ -11452,7 +11460,7 @@ static void test_bug5194()
if (!opt_silent)
printf("Insert: query length= %d, row count= %d, param count= %lu\n",
strlen(query), nrows, mysql_stmt_param_count(stmt));
(int) strlen(query), nrows, mysql_stmt_param_count(stmt));
/* bind the parameter array and execute the query */
rc= mysql_stmt_bind_param(stmt, bind);