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mariadb/strings/ctype.c

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/* Copyright (C) 2000 MySQL AB
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; either version 2 of the License, or
(at your option) any later version.
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 */
#include <my_global.h>
#include <m_ctype.h>
#include <my_xml.h>
#ifndef SCO
#include <m_string.h>
#endif
/*
This files implements routines which parse XML based
character set and collation description files.
Unicode collations are encoded according to
Unicode Technical Standard #35
Locale Data Markup Language (LDML)
http://www.unicode.org/reports/tr35/
and converted into ICU string according to
Collation Customization
http://oss.software.ibm.com/icu/userguide/Collate_Customization.html
*/
static char *mstr(char *str,const char *src,uint l1,uint l2)
{
l1= l1<l2 ? l1 : l2;
memcpy(str,src,l1);
str[l1]='\0';
return str;
}
struct my_cs_file_section_st
{
int state;
const char *str;
};
#define _CS_MISC 1
#define _CS_ID 2
#define _CS_CSNAME 3
#define _CS_FAMILY 4
#define _CS_ORDER 5
#define _CS_COLNAME 6
#define _CS_FLAG 7
#define _CS_CHARSET 8
#define _CS_COLLATION 9
#define _CS_UPPERMAP 10
#define _CS_LOWERMAP 11
#define _CS_UNIMAP 12
#define _CS_COLLMAP 13
#define _CS_CTYPEMAP 14
#define _CS_PRIMARY_ID 15
#define _CS_BINARY_ID 16
#define _CS_CSDESCRIPT 17
#define _CS_RESET 18
#define _CS_DIFF1 19
#define _CS_DIFF2 20
#define _CS_DIFF3 21
static struct my_cs_file_section_st sec[] =
{
{_CS_MISC, "xml"},
{_CS_MISC, "xml.version"},
{_CS_MISC, "xml.encoding"},
{_CS_MISC, "charsets"},
{_CS_MISC, "charsets.max-id"},
{_CS_CHARSET, "charsets.charset"},
{_CS_PRIMARY_ID, "charsets.charset.primary-id"},
{_CS_BINARY_ID, "charsets.charset.binary-id"},
{_CS_CSNAME, "charsets.charset.name"},
{_CS_FAMILY, "charsets.charset.family"},
{_CS_CSDESCRIPT, "charsets.charset.description"},
{_CS_MISC, "charsets.charset.alias"},
{_CS_MISC, "charsets.charset.ctype"},
{_CS_CTYPEMAP, "charsets.charset.ctype.map"},
{_CS_MISC, "charsets.charset.upper"},
{_CS_UPPERMAP, "charsets.charset.upper.map"},
{_CS_MISC, "charsets.charset.lower"},
{_CS_LOWERMAP, "charsets.charset.lower.map"},
{_CS_MISC, "charsets.charset.unicode"},
{_CS_UNIMAP, "charsets.charset.unicode.map"},
{_CS_COLLATION, "charsets.charset.collation"},
{_CS_COLNAME, "charsets.charset.collation.name"},
{_CS_ID, "charsets.charset.collation.id"},
{_CS_ORDER, "charsets.charset.collation.order"},
{_CS_FLAG, "charsets.charset.collation.flag"},
{_CS_COLLMAP, "charsets.charset.collation.map"},
{_CS_RESET, "charsets.charset.collation.rules.reset"},
{_CS_DIFF1, "charsets.charset.collation.rules.p"},
{_CS_DIFF2, "charsets.charset.collation.rules.s"},
{_CS_DIFF3, "charsets.charset.collation.rules.t"},
{0, NULL}
};
static struct my_cs_file_section_st * cs_file_sec(const char *attr, uint len)
{
struct my_cs_file_section_st *s;
for (s=sec; s->str; s++)
{
if (!strncmp(attr,s->str,len))
return s;
}
return NULL;
}
#define MY_CS_CSDESCR_SIZE 64
#define MY_CS_TAILORING_SIZE 128
typedef struct my_cs_file_info
{
char csname[MY_CS_NAME_SIZE];
char name[MY_CS_NAME_SIZE];
uchar ctype[MY_CS_CTYPE_TABLE_SIZE];
uchar to_lower[MY_CS_TO_LOWER_TABLE_SIZE];
uchar to_upper[MY_CS_TO_UPPER_TABLE_SIZE];
uchar sort_order[MY_CS_SORT_ORDER_TABLE_SIZE];
uint16 tab_to_uni[MY_CS_TO_UNI_TABLE_SIZE];
char comment[MY_CS_CSDESCR_SIZE];
char tailoring[MY_CS_TAILORING_SIZE];
size_t tailoring_length;
CHARSET_INFO cs;
int (*add_collation)(CHARSET_INFO *cs);
} MY_CHARSET_LOADER;
static int fill_uchar(uchar *a,uint size,const char *str, uint len)
{
uint i= 0;
const char *s, *b, *e=str+len;
for (s=str ; s < e ; i++)
{
for ( ; (s < e) && strchr(" \t\r\n",s[0]); s++) ;
b=s;
for ( ; (s < e) && !strchr(" \t\r\n",s[0]); s++) ;
if (s == b || i > size)
break;
a[i]= (uchar) strtoul(b,NULL,16);
}
return 0;
}
static int fill_uint16(uint16 *a,uint size,const char *str, uint len)
{
uint i= 0;
const char *s, *b, *e=str+len;
for (s=str ; s < e ; i++)
{
for ( ; (s < e) && strchr(" \t\r\n",s[0]); s++) ;
b=s;
for ( ; (s < e) && !strchr(" \t\r\n",s[0]); s++) ;
if (s == b || i > size)
break;
a[i]= (uint16) strtol(b,NULL,16);
}
return 0;
}
static int cs_enter(MY_XML_PARSER *st,const char *attr, uint len)
{
struct my_cs_file_info *i= (struct my_cs_file_info *)st->user_data;
struct my_cs_file_section_st *s= cs_file_sec(attr,len);
if ( s && (s->state == _CS_CHARSET))
bzero(&i->cs,sizeof(i->cs));
if (s && (s->state == _CS_COLLATION))
i->tailoring_length= 0;
return MY_XML_OK;
}
static int cs_leave(MY_XML_PARSER *st,const char *attr, uint len)
{
struct my_cs_file_info *i= (struct my_cs_file_info *)st->user_data;
struct my_cs_file_section_st *s= cs_file_sec(attr,len);
int state= s ? s->state : 0;
int rc;
switch(state){
case _CS_COLLATION:
rc= i->add_collation ? i->add_collation(&i->cs) : MY_XML_OK;
break;
default:
rc=MY_XML_OK;
}
return rc;
}
static int cs_value(MY_XML_PARSER *st,const char *attr, uint len)
{
struct my_cs_file_info *i= (struct my_cs_file_info *)st->user_data;
struct my_cs_file_section_st *s;
int state= (s=cs_file_sec(st->attr,strlen(st->attr))) ? s->state : 0;
#ifndef DBUG_OFF
if(0){
char str[1024];
mstr(str,attr,len,sizeof(str)-1);
printf("VALUE %d %s='%s'\n",state,st->attr,str);
}
#endif
switch (state) {
case _CS_ID:
i->cs.number= strtol(attr,(char**)NULL,10);
break;
case _CS_BINARY_ID:
i->cs.binary_number= strtol(attr,(char**)NULL,10);
break;
case _CS_PRIMARY_ID:
i->cs.primary_number= strtol(attr,(char**)NULL,10);
break;
case _CS_COLNAME:
i->cs.name=mstr(i->name,attr,len,MY_CS_NAME_SIZE-1);
break;
case _CS_CSNAME:
i->cs.csname=mstr(i->csname,attr,len,MY_CS_NAME_SIZE-1);
break;
case _CS_CSDESCRIPT:
i->cs.comment=mstr(i->comment,attr,len,MY_CS_CSDESCR_SIZE-1);
break;
case _CS_FLAG:
if (!strncmp("primary",attr,len))
i->cs.state|= MY_CS_PRIMARY;
else if (!strncmp("binary",attr,len))
i->cs.state|= MY_CS_BINSORT;
else if (!strncmp("compiled",attr,len))
i->cs.state|= MY_CS_COMPILED;
break;
case _CS_UPPERMAP:
fill_uchar(i->to_upper,MY_CS_TO_UPPER_TABLE_SIZE,attr,len);
i->cs.to_upper=i->to_upper;
break;
case _CS_LOWERMAP:
fill_uchar(i->to_lower,MY_CS_TO_LOWER_TABLE_SIZE,attr,len);
i->cs.to_lower=i->to_lower;
break;
case _CS_UNIMAP:
fill_uint16(i->tab_to_uni,MY_CS_TO_UNI_TABLE_SIZE,attr,len);
i->cs.tab_to_uni=i->tab_to_uni;
break;
case _CS_COLLMAP:
fill_uchar(i->sort_order,MY_CS_SORT_ORDER_TABLE_SIZE,attr,len);
i->cs.sort_order=i->sort_order;
break;
case _CS_CTYPEMAP:
fill_uchar(i->ctype,MY_CS_CTYPE_TABLE_SIZE,attr,len);
i->cs.ctype=i->ctype;
break;
case _CS_RESET:
case _CS_DIFF1:
case _CS_DIFF2:
case _CS_DIFF3:
{
/*
Convert collation description from
Locale Data Markup Language (LDML)
into ICU Collation Customization expression.
*/
char arg[16];
const char *cmd[]= {"&","<","<<","<<<"};
i->cs.tailoring= i->tailoring;
mstr(arg,attr,len,sizeof(arg)-1);
if (i->tailoring_length + 20 < sizeof(i->tailoring))
{
char *dst= i->tailoring_length + i->tailoring;
i->tailoring_length+= sprintf(dst," %s %s",cmd[state-_CS_RESET],arg);
}
}
}
return MY_XML_OK;
}
my_bool my_parse_charset_xml(const char *buf, uint len,
int (*add_collation)(CHARSET_INFO *cs))
{
MY_XML_PARSER p;
struct my_cs_file_info i;
my_bool rc;
my_xml_parser_create(&p);
my_xml_set_enter_handler(&p,cs_enter);
my_xml_set_value_handler(&p,cs_value);
my_xml_set_leave_handler(&p,cs_leave);
i.add_collation= add_collation;
my_xml_set_user_data(&p,(void*)&i);
rc= (my_xml_parse(&p,buf,len) == MY_XML_OK) ? FALSE : TRUE;
my_xml_parser_free(&p);
return rc;
}
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