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udf_infusion.c
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/* Copyright (C) 2010 Robert Eisele <robert@xarg.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef STANDARD
/* STANDARD is defined, don't use any mysql functions */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef __WIN__
typedef unsigned __int64 ulonglong; /* Microsofts 64 bit types */
typedef __int64 longlong;
#else
typedef unsigned long long ulonglong;
typedef long long longlong;
#endif /*__WIN__*/
#else
#include <my_global.h>
#include <my_sys.h>
#if defined(MYSQL_SERVER)
#include <m_string.h> /* To get strmov() */
#else
/* when compiled as standalone */
#include <string.h>
#define strmov(a,b) stpcpy(a,b)
#define bzero(a,b) memset(a,0,b)
#define memcpy_fixed(a,b,c) memcpy(a,b,c)
#endif
#endif
#include <mysql.h>
#include <ctype.h>
#ifndef NOT_FIXED_DEC
#define NOT_FIXED_DEC 31
#endif
#ifndef HAVE_DLOPENxxx
struct Buffer {
longlong length;
char *string;
char state;
};
struct DoubleBuffer {
unsigned long used;
unsigned long size;
double *number;
double sum;
};
struct StatBuffer {
unsigned long count;
double mean;
double M2;
double M3;
double M4;
};
struct CovBuffer {
double x;
double y;
double c;
unsigned count;
};
static char *_translate_string(UDF_ARGS *args, char *result, unsigned long *length, char separator);
my_bool isbit_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (2 != args->arg_count) {
strcpy(message, "isbit must have exactly two arguments");
return 1;
}
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong isbit(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1]) {
*is_null = 1;
return 0;
}
longlong bit = *((longlong *) args->args[0]);
longlong n = *((longlong *) args->args[1]);
return (bit >> n) & 1;
}
my_bool setbit_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
switch (args->arg_count) {
case 3:
args->arg_type[2] = INT_RESULT;
case 2:
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
break;
default:
strcpy(message, "setbit must have two or three arguments");
return 1;
}
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong setbit(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1]) {
*is_null = 1;
return 0;
}
longlong bit = *((longlong *) args->args[0]);
longlong n = *((longlong *) args->args[1]);
if (2 == args->arg_count || (NULL != args->args[2] && 1 == *((longlong *) args->args[2]))) {
return bit | (1 << n);
}
return bit & (~(1 << n));
}
my_bool invbit_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (2 != args->arg_count) {
strcpy(message, "invbit must have exactly two arguments");
return 1;
}
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong invbit(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1]) {
*is_null = 1;
return 0;
}
longlong bit = *((longlong *) args->args[0]);
longlong n = *((longlong *) args->args[1]);
return bit ^ (1 << n);
}
my_bool rotbit_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (2 != args->arg_count) {
strcpy(message, "rotbit must have exactly two arguments");
return 1;
}
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong rotbit(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1]) {
*is_null = 1;
return 0;
}
longlong bit = *((longlong *) args->args[0]);
longlong n = *((longlong *) args->args[1]);
n = (64 + (n % 64)) % 64;
return ((bit << n) | (bit >> (64 - n))) & 0x7FFFFFFFFFFFFFFFLL;
}
my_bool getint_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (3 != args->arg_count) {
strcpy(message, "getint must have exactly three arguments");
return 1;
}
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
args->arg_type[2] = INT_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong getint(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1] || NULL == args->args[2]) {
*is_null = 1;
return 0;
}
longlong n = *((longlong *) args->args[0]);
longlong x = *((longlong *) args->args[1]);
longlong y = *((longlong *) args->args[2]);
return (n >> x) & ((2 << (y - x)) - 1);
}
my_bool rotint_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (4 != args->arg_count) {
strcpy(message, "rotint must have exactly four arguments");
return 1;
}
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
args->arg_type[2] = INT_RESULT;
args->arg_type[3] = INT_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong rotint(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
longlong n, x, y, m, a, b;
if (NULL == args->args[0] || NULL == args->args[1] || NULL == args->args[2] || NULL == args->args[3]) {
*is_null = 1;
return 0;
}
n = *((longlong *) args->args[0]);
x = *((longlong *) args->args[1]);
y = *((longlong *) args->args[2]);
m = *((longlong *) args->args[3]);
if (y < x || x < 1) {
*is_null = 1;
return 0;
}
y-= x;
m = (y + (m % y)) % y;
a = (1 << y) - 1;
b = (n >> x) & a;
return (n & (~(a << x))) | ((((b << m) | (b >> (y - m))) & a) << x);
}
my_bool setint_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (4 != args->arg_count) {
strcpy(message, "setint must have exactly four arguments");
return 1;
}
args->arg_type[0] = INT_RESULT;
args->arg_type[1] = INT_RESULT;
args->arg_type[2] = INT_RESULT;
args->arg_type[3] = INT_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong setint(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1] || NULL == args->args[2] || NULL == args->args[3]) {
*is_null = 1;
return 0;
}
longlong n = *((longlong *) args->args[0]);
longlong x = *((longlong *) args->args[1]);
longlong y = *((longlong *) args->args[2]);
longlong m = *((longlong *) args->args[3]);
return n & (~(((2 << (y - x)) - 1) << x)) | (m << x);
}
my_bool bround_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (2 != args->arg_count) {
strcpy(message, "bround must have exactly two arguments");
return 1;
}
args->arg_type[0] = REAL_RESULT;
args->arg_type[1] = REAL_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
initid->decimals = NOT_FIXED_DEC;
initid->max_length = 20;
return 0;
}
double bround(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
if (NULL == args->args[0] || NULL == args->args[1] || 0 == *((double *) args->args[1])) {
*is_null = 1;
return 0;
}
return ceil(*((double *) args->args[0]) / *((double *) args->args[1])) * *((double *) args->args[1]);
}
my_bool xround_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (1 != args->arg_count) {
strcpy(message, "xround must have exactly one single argument");
return 1;
}
switch (args->arg_type[0]) {
case STRING_RESULT:
case DECIMAL_RESULT:
args->arg_type[0] = REAL_RESULT;
default:
break;
}
initid->const_item = 1;
initid->maybe_null = 0;
return 0;
}
#define RET_NEG(s) return (((s) ^ -f) + f)
longlong xround(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
longlong n, f = 0;
double d;
if (NULL == args->args[0]) {
*is_null = 1;
return 0;
}
if (INT_RESULT == args->arg_type[0]) {
n = *((longlong *) args->args[0]);
} else {
d = *((double *) args->args[0]);
n = (longlong) d;
n = n + (n < d) - (d < n);
}
if (n < 0) {
n = -n;
f = 1;
}
if (n > 1000000000LL) {
if (n > 100000000000000LL) {
if (n > 10000000000000000LL) {
if (n <= 100000000000000000LL) RET_NEG(100000000000000000LL);
if (n <= 1000000000000000000LL) RET_NEG(1000000000000000000LL);
RET_NEG(1000000000000000000LL);
} else {
if (n <= 1000000000000000LL) RET_NEG(1000000000000000LL);
RET_NEG(10000000000000000LL);
}
} else {
if (n > 100000000000LL) {
if (n <= 1000000000000LL) RET_NEG(1000000000000LL);
if (n <= 10000000000000LL) RET_NEG(10000000000000LL);
RET_NEG(100000000000000LL);
} else {
if (n <= 10000000000LL) RET_NEG(10000000000LL);
RET_NEG(100000000000LL);
}
}
} else if (n > 10000LL) {
if (n > 1000000LL) {
if (n <= 10000000LL) RET_NEG(10000000LL);
if (n <= 100000000LL) RET_NEG(100000000LL);
RET_NEG(1000000000LL);
} else {
if (n <= 100000LL) RET_NEG(100000LL);
RET_NEG(1000000LL);
}
} else {
if (n > 100LL) {
if (n <= 1000LL) RET_NEG(1000LL);
RET_NEG(10000LL);
} else {
if (n <= 1LL) RET_NEG(1LL);
if (n <= 10LL) RET_NEG(10LL);
RET_NEG(100LL);
}
}
RET_NEG(1LL);
}
#undef RET_NEG
my_bool bound_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (3 != args->arg_count) {
strcpy(message, "bound must have exactly three arguments");
return 1;
}
args->arg_type[0] = REAL_RESULT;
args->arg_type[1] = REAL_RESULT;
args->arg_type[2] = REAL_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
initid->decimals = NOT_FIXED_DEC;
initid->max_length = 20;
return 0;
}
double bound(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
double *n, *x, *y;
n = (double *) args->args[0];
x = (double *) args->args[1];
y = (double *) args->args[2];
if (NULL == n) {
*is_null = 1;
return 0;
}
if (NULL != y && NULL != x && *y < *x) {
return *x;
}
if (NULL != y && *y < *n) {
return *y;
}
if (NULL != x && *n < *x) {
return *x;
}
return *n;
}
my_bool cut_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (2 != args->arg_count && 3 != args->arg_count) {
strcpy(message, "cut must have two or three arguments");
return 1;
}
args->arg_type[0] = STRING_RESULT;
args->arg_type[1] = INT_RESULT;
args->arg_type[2] = STRING_RESULT;
initid->max_length = args->attribute_lengths[0];
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
char *cut(UDF_INIT *initid, UDF_ARGS *args,
char *result, unsigned long *length,
char *is_null, char *error __attribute__((unused)))
{
char *str = args->args[0], *c = "...";
long sl = args->lengths[0], cl = 3, max = *((longlong *) args->args[1]), i;
if (NULL == str) {
*is_null = 1;
return 0;
}
if (3 == args->arg_count && NULL != args->args[2]) {
c = args->args[2];
cl = args->lengths[2];
}
if (max > 0 && (sl - cl) > max) {
for (i = (sl - 1) < max ? (sl - 1) : max; i >= 0; i--) {
switch (str[i]) {
case ' ':
case '\t':
case '\r':
case '\n':
goto done;
}
}
done:
if (-1 == i) {
*length = sl < max ? sl : max;
} else {
*length = i;
}
memcpy(result, str, *length);
memcpy(result + *length, c, cl);
*length+= cl;
return result;
}
memcpy(result, str, sl);
*length = sl;
result[*length] = 0;
return result;
}
my_bool fnv_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (1 != args->arg_count) {
strcpy(message, "fnv must have one argument");
return 1;
}
args->arg_type[0] = STRING_RESULT;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
longlong fnv(UDF_INIT *initid __attribute__((unused)), UDF_ARGS *args,
char *is_null,
char *error __attribute__((unused)))
{
char *str = args->args[0];
size_t len = args->lengths[0];
const unsigned char *first = (unsigned char *) str, *last = first + len;
longlong hash = 0xcbf29ce484222325ULL,
magic = 0x00000100000001b3ULL;
if (NULL == args->args[0]) {
*is_null = 1;
return 0;
}
while (first < last) {
hash^= *first++,
hash*= magic;
}
return hash;
}
my_bool slug_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
if (1 != args->arg_count) {
strcpy(message, "slug must have exaclty one argument");
return 1;
}
args->arg_type[0] = STRING_RESULT;
initid->max_length = args->attribute_lengths[0] * 2;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
char *slug(UDF_INIT *initid, UDF_ARGS *args,
char *result, unsigned long *length,
char *is_null, char *error __attribute__((unused)))
{
if (NULL == args->args[0]) {
*is_null = 1;
return 0;
}
return _translate_string(args, result, length, '-');
}
#define MAX_GRAM 10
my_bool ngram_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
switch (args->arg_count) {
case 2:
args->arg_type[1] = INT_RESULT;
case 1:
args->arg_type[0] = STRING_RESULT;
break;
default:
strcpy(message, "ngram must have one or two arguments");
return 1;
}
initid->max_length = (args->lengths[0] + 1) * MAX_GRAM;
initid->ptr = NULL;
initid->const_item = 1;
initid->maybe_null = 1;
return 0;
}
char *ngram(UDF_INIT *initid, UDF_ARGS *args,
char *result, unsigned long *length,
char *is_null, char *error __attribute__((unused)))
{
char *tmp, *ptr, *start;
long i = -1, j, l, n = 2;
if (NULL == args->args[0]) {
*is_null = 1;
return result;
}
if (2 == args->arg_count) {
if ((n = (unsigned) *((longlong *) args->args[1])) > MAX_GRAM)
n = MAX_GRAM;
}
if (args->lengths[0] < 1 || n < 1) {
*length = 0;
return result;
}
if (initid->max_length * n <= 255 * MAX_GRAM) {
ptr = result;
} else if(NULL != initid->ptr) {
ptr = initid->ptr;
} else if (NULL == (ptr = malloc(initid->max_length))) {
*is_null = 1;
return result;
} else {
initid->ptr = ptr;
}
start = ptr;
_translate_string(args, ptr, length, '_');
l = *length;
if (l < 1 || l < n) {
return ptr;
}
tmp = strndup(ptr, l);
for (; i < l; i++) {
if (i < l - n + 2) {
for (j = 0; j < n; j++) {
if (i + j >= 0 && i + j < l) {
*(ptr++) = tmp[i + j];
} else {
*(ptr++) = '_';
}
}
*(ptr++) = ' ';
}
}
free(tmp);
*(--ptr) = 0;
*length = ptr - start;
return start;
}
my_bool ngram_deinit(UDF_INIT *initid, UDF_ARGS *args, char *message) {
char *ptr = (char *) initid->ptr;
if (NULL != ptr) {
free(ptr);
}
return 0;
}
#if 1
# define EN(n) (n)
#else
# define EN(n) (((n) >> 8) | (((n) << 8) & 0xffff))
#endif
#define ADD1(s) *(result++) = s[0]; add = 1;
#define ADD1I(s) ADD1(s); ++ptr;
#define ADD2(s) *(result++) = s[0]; *(result++) = s[1]; add = 1;
#define ADD2I(s) ADD2(s); ++ptr;
#define BTW(c, a, b) (unsigned)(c) - (unsigned)(a) <= (unsigned)(b) - (unsigned)(a)
static char *_translate_string(UDF_ARGS *args, char *result, unsigned long *length, char separator)
{
char *start_res = result, *ptr = args->args[0], *end_str = ptr + args->lengths[0], add = 0;
/* My own UTF8 and latin translation table */
for (; ptr < end_str; ptr++) {
unsigned char c = *ptr;
unsigned short s = *((unsigned short *) ptr);
if (BTW(c, 'a', 'z') || BTW(c, '0', '9')) {
*(result++) = c;
add = 1;
} else if (BTW(c, 'A', 'Z')) {
*(result++) = c | 32;
add = 1;
} else switch (s) {
case EN(0x9fc3):
ADD2I("ss");
break;
case EN(0x84c3): case EN(0xa4c3):
case EN(0xa6c3): case EN(0x86c3):
ADD2I("ae");
break;
case EN(0x96c3): case EN(0xb6c3):
ADD2I("oe");
break;
case EN(0x9cc3): case EN(0xbcc3):
ADD2I("ue");
break;
case EN(0xa0c3): case EN(0xa1c3):
case EN(0xa2c3): case EN(0xa3c3):
case EN(0xa5c3): case EN(0x80c3):
case EN(0x81c3): case EN(0x82c3):
case EN(0x83c3): case EN(0x85c3):
ADD1I("a");
break;
case EN(0xa8c3): case EN(0xa9c3):
case EN(0xaac3): case EN(0xabc3):
case EN(0x88c3): case EN(0x89c3):
case EN(0x8ac3): case EN(0x8bc3):
ADD1I("e");
break;
case EN(0xacc3): case EN(0xadc3):
case EN(0xaec3): case EN(0xafc3):
case EN(0x8cc3): case EN(0x8dc3):
case EN(0x8ec3): case EN(0x8fc3):
ADD1I("i");
break;
case EN(0xb0c3): case EN(0xb2c3):
case EN(0xb3c3): case EN(0xb4c3):
case EN(0xb5c3): case EN(0x92c3):
case EN(0x93c3): case EN(0x94c3):
case EN(0x95c3):
ADD1I("o");
break;
case EN(0xb9c3): case EN(0xbac3):
case EN(0xbbc3): case EN(0x99c3):
case EN(0x9ac3): case EN(0x9bc3):
case EN(0xb5c2):
ADD1I("u");
break;
case EN(0x91c3): case EN(0xb1c3):
ADD1I("n");
break;
case EN(0x87c3): case EN(0xa7c2):
case EN(0xa2c2): case EN(0xa7c3):
ADD1I("c");
break;
case EN(0x9ec3): case EN(0xbec3):
ADD1I("p");
break;
case EN(0xbfc3): case EN(0xa5c2):
case EN(0x9dc3): case EN(0xbdc3):
ADD1I("y");
break;
case EN(0x97c3):
ADD1I("x");
break;
case EN(0xaec2):
ADD1I("r");
break;
case EN(0x90c3):
ADD1I("d");
break;
default:
switch (c) {
case 223:
ADD2("ss");
break;
case 196: case 198:
case 228: case 230:
ADD2("ae");
break;
case 214: case 246:
ADD2("oe");
break;
case 220: case 252:
ADD2("ue");
break;
case 192: case 193:
case 194: case 195:
case 197: case 224:
case 225: case 226:
case 227: case 229:
ADD1("a");
break;
case 200: case 201:
case 202: case 203:
case 232: case 233:
case 234: case 235:
ADD1("e");
break;
case 161: case 204:
case 205: case 206:
case 207: case 236:
case 237: case 238:
case 239:
ADD1("i");
break;
case 210: case 211:
case 212: case 213:
case 240: case 242:
case 243: case 244:
case 245:
ADD1("o");
break;
case 181: case 217:
case 218: case 219:
case 249: case 250:
case 251:
ADD1("u");
break;
case 209: case 241:
ADD1("n");
break;
case 162: case 169:
case 199: case 231:
ADD1("c");
break;
case 222: case 254:
ADD1("p");
break;
case 165: case 221:
case 253: case 255:
ADD1("y");
break;
case 215:
ADD1("x");
break;
case 174:
ADD1("r");
break;
case 208:
ADD1("d");
break;
default:
if (add) {
*(result++) = separator;
add = 0;
}
}
}
}
if ((*length = result - start_res) > 0 && *(result - 1) == separator) {
result--;
(*length)--;
}
*result = 0;
return start_res;
}
#undef EN
#undef BTW
#undef ADD1
#undef ADD1I
#undef ADD2
#undef ADD2I
my_bool row_number_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
longlong *data;
if (0 != args->arg_count) {
strcpy(message, "rownumber doesn't require an argument");
return 1;
}
if (NULL == (data = malloc(sizeof (*data)))) {
strcpy(message, "Couldn't allocate memory");
return 1;
}
*data = 0;
initid->ptr = (char *) data;
initid->const_item = 0;
initid->maybe_null = 1;
return 0;
}
longlong row_number(UDF_INIT *initid, UDF_ARGS *args, char *is_null, char *error)
{
longlong *data;
if (initid->ptr) {
data = (longlong *) initid->ptr;
return ++(*data);
}
*error = 1;
return 0;
}
void row_number_deinit(UDF_INIT *initid)
{
if (initid->ptr) {
free(initid->ptr);
}
}
my_bool rsumi_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
{
longlong *data;
if (1 != args->arg_count) {
strcpy(message, "rsumi must have one argument");
return 1;
}
if (NULL == (data = malloc(sizeof (*data)))) {
strcpy(message, "Couldn't allocate memory");
return 1;
}
*data = 0;
args->arg_type[0] = INT_RESULT;
initid->ptr = (char *) data;
initid->const_item = 0;
initid->maybe_null = 1;
return 0;
}
longlong rsumi(UDF_INIT *initid, UDF_ARGS *args, char *is_null, char *error)
{
longlong *data;
if (initid->ptr) {
data = (longlong *) initid->ptr;
if (NULL == args->args[0]) {
return *data;
}
(*data)+= *((longlong *) args->args[0]);
return *data;