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network_mysqld_type.c
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658 lines (485 loc) · 16 KB
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#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include "network_mysqld_type.h"
#include "string-len.h"
#include "glib-ext.h"
/* expose the types itself and their internal representation */
typedef double network_mysqld_type_double_t;
typedef float network_mysqld_type_float_t;
typedef GString network_mysqld_type_string_t;
typedef struct {
guint64 i;
gboolean is_unsigned;
} network_mysqld_type_int_t;
/**
* create a type that can hold a MYSQL_TYPE_LONGLONG
*/
static network_mysqld_type_int_t *network_mysqld_type_int_new(void) {
network_mysqld_type_int_t *ll;
ll = g_slice_new0(network_mysqld_type_int_t);
return ll;
}
/**
* free a network_mysqld_type_int_t
*/
static void network_mysqld_type_int_free(network_mysqld_type_int_t *ll) {
if (NULL == ll) return;
g_slice_free(network_mysqld_type_int_t, ll);
}
static int network_mysqld_type_data_int_get_int(network_mysqld_type_t *type, guint64 *i, gboolean *is_unsigned) {
network_mysqld_type_int_t *value;
if (NULL == type->data) return -1;
value = type->data;
*i = value->i;
*is_unsigned = value->is_unsigned;
return 0;
}
static int network_mysqld_type_data_int_set_int(network_mysqld_type_t *type, guint64 i, gboolean is_unsigned) {
network_mysqld_type_int_t *value;
if (NULL == type->data) {
type->data = network_mysqld_type_int_new();
}
value = type->data;
value->i = i;
value->is_unsigned = is_unsigned;
return 0;
}
/**
* typesafe wrapper for network_mysqld_type_new()
*/
static void network_mysqld_type_data_int_free(network_mysqld_type_t *type) {
if (NULL == type) return;
if (NULL == type->data) return;
network_mysqld_type_int_free(type->data);
}
static void network_mysqld_type_data_int_init(network_mysqld_type_t *type, enum enum_field_types field_type) {
type->type = field_type;
type->free_data = network_mysqld_type_data_int_free;
type->get_int = network_mysqld_type_data_int_get_int;
type->set_int = network_mysqld_type_data_int_set_int;
}
/* MYSQL_TYPE_DOUBLE */
/**
* create a type that can hold a MYSQL_TYPE_DOUBLE
*/
static network_mysqld_type_double_t *network_mysqld_type_double_new(void) {
network_mysqld_type_double_t *t;
t = g_slice_new0(network_mysqld_type_double_t);
return t;
}
/**
* free a network_mysqld_type_double_t
*/
static void network_mysqld_type_double_free(network_mysqld_type_double_t *t) {
if (NULL == t) return;
g_slice_free(network_mysqld_type_double_t, t);
}
static void network_mysqld_type_data_double_free(network_mysqld_type_t *type) {
if (NULL == type) return;
if (NULL == type->data) return;
network_mysqld_type_double_free(type->data);
}
static int network_mysqld_type_data_double_get_double(network_mysqld_type_t *type, double *d) {
network_mysqld_type_double_t *value = type->data;
if (NULL == value) return -1;
*d = *value;
return 0;
}
static int network_mysqld_type_data_double_set_double(network_mysqld_type_t *type, double d) {
network_mysqld_type_double_t *value;
if (NULL == type->data) {
type->data = network_mysqld_type_double_new();
}
value = type->data;
*value = d;
return 0;
}
static void network_mysqld_type_data_double_init(network_mysqld_type_t *type, enum enum_field_types field_type) {
type->type = field_type;
type->free_data = network_mysqld_type_data_double_free;
type->get_double = network_mysqld_type_data_double_get_double;
type->set_double = network_mysqld_type_data_double_set_double;
}
/* MYSQL_TYPE_FLOAT */
/**
* create a type that can hold a MYSQL_TYPE_FLOAT
*/
static network_mysqld_type_float_t *network_mysqld_type_float_new(void) {
network_mysqld_type_float_t *t;
t = g_slice_new0(network_mysqld_type_float_t);
return t;
}
/**
* free a network_mysqld_type_float_t
*/
static void network_mysqld_type_float_free(network_mysqld_type_float_t *t) {
if (NULL == t) return;
g_slice_free(network_mysqld_type_float_t, t);
}
static void network_mysqld_type_data_float_free(network_mysqld_type_t *type) {
if (NULL == type) return;
if (NULL == type->data) return;
network_mysqld_type_float_free(type->data);
}
static int network_mysqld_type_data_float_get_double(network_mysqld_type_t *type, double *dst) {
network_mysqld_type_float_t *src = type->data;
if (NULL == type->data) return -1;
*dst = (double)*src;
return 0;
}
static int network_mysqld_type_data_float_set_double(network_mysqld_type_t *type, double src) {
network_mysqld_type_float_t *dst = type->data;
if (NULL == type->data) {
type->data = network_mysqld_type_float_new();
}
dst = type->data;
*dst = (float)src;
return 0;
}
static void network_mysqld_type_data_float_init(network_mysqld_type_t *type, enum enum_field_types field_type) {
type->type = field_type;
type->free_data = network_mysqld_type_data_float_free;
type->get_double = network_mysqld_type_data_float_get_double;
type->set_double = network_mysqld_type_data_float_set_double;
}
/* MYSQL_TYPE_STRING */
static network_mysqld_type_string_t *network_mysqld_type_string_new(void) {
network_mysqld_type_string_t *str;
str = g_string_new(NULL);
return str;
}
static void network_mysqld_type_string_free(network_mysqld_type_string_t *str) {
if (NULL == str) return;
g_string_free(str, TRUE);
}
static void network_mysqld_type_data_string_free(network_mysqld_type_t *type) {
if (NULL == type) return;
network_mysqld_type_string_free(type->data);
}
static int network_mysqld_type_data_string_get_string_const(network_mysqld_type_t *type, const char **dst, gsize *dst_len) {
GString *src = type->data;
if (NULL == type->data) return -1;
*dst = src->str;
*dst_len = src->len;
return 0;
}
static int network_mysqld_type_data_string_set_string(network_mysqld_type_t *type, const char *src, gsize src_len) {
GString *dst;
if (NULL == type->data) {
type->data = g_string_sized_new(src_len);
}
dst = type->data;
g_string_assign_len(dst, src, src_len);
return 0;
}
static void network_mysqld_type_data_string_init(network_mysqld_type_t *type, enum enum_field_types field_type) {
type->type = field_type;
type->free_data = network_mysqld_type_data_string_free;
type->get_string_const = network_mysqld_type_data_string_get_string_const;
type->set_string = network_mysqld_type_data_string_set_string;
}
/* MYSQL_TYPE_DATE */
static network_mysqld_type_date_t *network_mysqld_type_date_new(void) {
network_mysqld_type_date_t *date;
date = g_slice_new0(network_mysqld_type_date_t);
return date;
}
static void network_mysqld_type_date_free(network_mysqld_type_date_t *date) {
if (NULL == date) return;
g_slice_free(network_mysqld_type_date_t, date);
}
static void network_mysqld_type_data_date_free(network_mysqld_type_t *type) {
if (NULL == type) return;
network_mysqld_type_date_free(type->data);
}
static int network_mysqld_type_data_date_get_date(network_mysqld_type_t *type, network_mysqld_type_date_t *dst) {
network_mysqld_type_date_t *src = type->data;
if (NULL == type->data) return -1;
memcpy(dst, src, sizeof(*src));
return 0;
}
static gboolean network_mysqld_type_date_time_is_valid(network_mysqld_type_date_t *date) {
return (date->nsec < 1000000000 &&
date->sec < 100 &&
date->min <= 60 &&
date->hour <= 24);
}
static gboolean network_mysqld_type_date_date_is_valid(network_mysqld_type_date_t *date) {
return (date->day <= 31 &&
date->month <= 12 &&
date->year <= 9999);
}
gboolean network_mysqld_type_date_is_valid(network_mysqld_type_date_t *date) {
return network_mysqld_type_date_time_is_valid(date) &&
network_mysqld_type_date_date_is_valid(date);
}
static int network_mysqld_type_data_date_get_string(network_mysqld_type_t *type, char **dst, gsize *dst_len) {
network_mysqld_type_date_t *src = type->data;
if (NULL == type->data) return -1;
switch (type->type) {
case MYSQL_TYPE_DATE:
if (!network_mysqld_type_date_date_is_valid(src)) {
return -1;
}
break;
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
if (!network_mysqld_type_date_is_valid(src)) {
return -1;
}
break;
default:
/* we shouldn't be here */
return -1;
}
if (NULL != *dst) {
switch (type->type) {
case MYSQL_TYPE_DATE:
/* dst_len already contains a size and we don't have to alloc */
if (*dst_len < NETWORK_MYSQLD_TYPE_DATE_MIN_BUF_LEN) {
return -1; /* ... but it is too small .. we could return the right size here */
}
*dst_len = g_snprintf(*dst, *dst_len, "%04u-%02u-%02u",
src->year,
src->month,
src->day);
break;
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
/* dst_len already contains a size and we don't have to alloc */
if (*dst_len < NETWORK_MYSQLD_TYPE_DATETIME_MIN_BUF_LEN) {
return -1; /* ... but it is too small .. we could return the right size here */
}
*dst_len = g_snprintf(*dst, *dst_len, "%04u-%02u-%02u %02u:%02u:%02u.%09u",
src->year,
src->month,
src->day,
src->hour,
src->min,
src->sec,
src->nsec);
break;
default:
g_assert_not_reached();
break;
}
} else {
switch (type->type) {
case MYSQL_TYPE_DATE:
*dst = g_strdup_printf("%04u-%02u-%02u",
src->year,
src->month,
src->day);
*dst_len = strlen(*dst);
break;
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
*dst = g_strdup_printf("%04u-%02u-%02u %02u:%02u:%02u.%09u",
src->year,
src->month,
src->day,
src->hour,
src->min,
src->sec,
src->nsec);
*dst_len = strlen(*dst);
break;
default:
g_assert_not_reached();
break;
}
}
return 0;
}
static int network_mysqld_type_data_date_set_date(network_mysqld_type_t *type, network_mysqld_type_date_t *src) {
network_mysqld_type_date_t *dst;
if (NULL == type->data) {
type->data = network_mysqld_type_date_new();
}
dst = type->data;
memcpy(dst, src, sizeof(*src));
return 0;
}
static void network_mysqld_type_data_date_init(network_mysqld_type_t *type, enum enum_field_types field_type) {
type->type = field_type;
type->free_data = network_mysqld_type_data_date_free;
type->get_date = network_mysqld_type_data_date_get_date;
type->get_string = network_mysqld_type_data_date_get_string;
type->set_date = network_mysqld_type_data_date_set_date;
}
/* MYSQL_TYPE_TIME */
static network_mysqld_type_time_t *network_mysqld_type_time_new(void) {
network_mysqld_type_time_t *t;
t = g_slice_new0(network_mysqld_type_time_t);
return t;
}
static void network_mysqld_type_time_free(network_mysqld_type_time_t *t) {
if (NULL == t) return;
g_slice_free(network_mysqld_type_time_t, t);
}
static void network_mysqld_type_data_time_free(network_mysqld_type_t *type) {
if (NULL == type) return;
network_mysqld_type_time_free(type->data);
}
static int network_mysqld_type_data_time_get_time(network_mysqld_type_t *type, network_mysqld_type_time_t *dst) {
network_mysqld_type_time_t *src = type->data;
if (NULL == type->data) return -1;
memcpy(dst, src, sizeof(*src));
return 0;
}
static int network_mysqld_type_data_time_get_string(network_mysqld_type_t *type, char **dst, gsize *dst_len) {
network_mysqld_type_time_t *src = type->data;
if (NULL == type->data) return -1;
if (NULL != *dst) {
/* dst_len already contains a size and we don't have to alloc */
if (*dst_len < NETWORK_MYSQLD_TYPE_TIME_MIN_BUF_LEN) {
return -1; /* ... but it is too small .. we could return the right size here */
}
*dst_len = g_snprintf(*dst, *dst_len, "%s%d %02u:%02u:%02u.%09u",
src->sign ? "-" : "",
src->days,
src->hour,
src->min,
src->sec,
src->nsec);
} else {
*dst = g_strdup_printf("%s%d %02u:%02u:%02u.%09u",
src->sign ? "-" : "",
src->days,
src->hour,
src->min,
src->sec,
src->nsec);
*dst_len = strlen(*dst);
}
return 0;
}
static int network_mysqld_type_data_time_set_time(network_mysqld_type_t *type, network_mysqld_type_time_t *src) {
network_mysqld_type_date_t *dst;
if (NULL == type->data) {
type->data = network_mysqld_type_time_new();
}
dst = type->data;
memcpy(dst, src, sizeof(*src));
return 0;
}
static void network_mysqld_type_data_time_init(network_mysqld_type_t *type, enum enum_field_types field_type) {
type->type = field_type;
type->free_data = network_mysqld_type_data_time_free;
type->get_time = network_mysqld_type_data_time_get_time;
type->get_string = network_mysqld_type_data_time_get_string;
type->set_time = network_mysqld_type_data_time_set_time;
}
/**
* create a type
*/
network_mysqld_type_t *network_mysqld_type_new(enum enum_field_types field_type) {
network_mysqld_type_t *type = NULL;
switch (field_type) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONGLONG:
type = g_slice_new0(network_mysqld_type_t);
network_mysqld_type_data_int_init(type, field_type);
break;
case MYSQL_TYPE_FLOAT: /* 4 bytes */
type = g_slice_new0(network_mysqld_type_t);
network_mysqld_type_data_float_init(type, field_type);
break;
case MYSQL_TYPE_DOUBLE: /* 8 bytes */
type = g_slice_new0(network_mysqld_type_t);
network_mysqld_type_data_double_init(type, field_type);
break;
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_TIMESTAMP:
type = g_slice_new0(network_mysqld_type_t);
network_mysqld_type_data_date_init(type, field_type);
break;
case MYSQL_TYPE_TIME:
type = g_slice_new0(network_mysqld_type_t);
network_mysqld_type_data_time_init(type, field_type);
break;
case MYSQL_TYPE_NEWDECIMAL:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_VARCHAR:
/* they are all length-encoded strings */
type = g_slice_new0(network_mysqld_type_t);
network_mysqld_type_data_string_init(type, field_type);
break;
case MYSQL_TYPE_NULL:
type = g_slice_new0(network_mysqld_type_t);
type->type = field_type;
break;
default:
break;
}
return type;
}
/**
* free a type
*/
void network_mysqld_type_free(network_mysqld_type_t *type) {
if (NULL == type) return;
if (NULL != type->free_data) {
type->free_data(type);
}
g_slice_free(network_mysqld_type_t, type);
}
int network_mysqld_type_get_gstring(network_mysqld_type_t *type, GString *s) {
if (NULL == type->get_gstring) return -1;
return type->get_gstring(type, s);
}
int network_mysqld_type_get_string_const(network_mysqld_type_t *type, const char **s, gsize *s_len) {
if (NULL == type->get_string_const) return -1;
return type->get_string_const(type, s, s_len);
}
int network_mysqld_type_get_string(network_mysqld_type_t *type, char **s, gsize *s_len) {
if (NULL == type->get_string) return -1;
return type->get_string(type, s, s_len);
}
int network_mysqld_type_set_string(network_mysqld_type_t *type, const char *s, gsize s_len) {
if (NULL == type->set_string) return -1;
return type->set_string(type, s, s_len);
}
int network_mysqld_type_get_int(network_mysqld_type_t *type, guint64 *i, gboolean *is_unsigned) {
if (NULL == type->get_int) return -1;
return type->get_int(type, i, is_unsigned);
}
int network_mysqld_type_set_int(network_mysqld_type_t *type, guint64 i, gboolean is_unsigned) {
if (NULL == type->set_int) return -1;
return type->set_int(type, i, is_unsigned);
}
int network_mysqld_type_get_double(network_mysqld_type_t *type, double *d) {
if (NULL == type->get_double) return -1;
return type->get_double(type, d);
}
int network_mysqld_type_set_double(network_mysqld_type_t *type, double d) {
if (NULL == type->set_double) return -1;
return type->set_double(type, d);
}
int network_mysqld_type_get_date(network_mysqld_type_t *type, network_mysqld_type_date_t *date) {
if (NULL == type->get_date) return -1;
return type->get_date(type, date);
}
int network_mysqld_type_set_date(network_mysqld_type_t *type, network_mysqld_type_date_t *date) {
if (NULL == type->set_date) return -1;
return type->set_date(type, date);
}
int network_mysqld_type_get_time(network_mysqld_type_t *type, network_mysqld_type_time_t *t) {
if (NULL == type->get_time) return -1;
return type->get_time(type, t);
}
int network_mysqld_type_set_time(network_mysqld_type_t *type, network_mysqld_type_time_t *t) {
if (NULL == type->set_time) return -1;
return type->set_time(type, t);
}