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Overview
| Comment: | Add special fast paths to sqlite3FtsUnicodeTolower() and Isalnum() for codepoints in the ASCII range. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | fts4-unicode |
| Files: | files | file ages | folders |
| SHA1: |
cf7b25d47687635a04f4347d45f135c6 |
| User & Date: | dan 2012-05-25 19:50:12 |
Context
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2012-05-26
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| 14:54 | Change the name of the "unicode" tokenizer to "unicode61" to emphasize that the case folding and separator-character identification routines are based on unicode version 6.1. check-in: 8f3e60aa user: dan tags: fts4-unicode | |
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2012-05-25
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| 19:50 | Add special fast paths to sqlite3FtsUnicodeTolower() and Isalnum() for codepoints in the ASCII range. check-in: cf7b25d4 user: dan tags: fts4-unicode | |
| 18:48 | Fix comments in generated file fts3_unicode2.c. check-in: 3dc567ef user: dan tags: fts4-unicode | |
Changes
Changes to ext/fts3/fts3_unicode.c.
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do {
/* Grow the output buffer if required. */
if( (zOut-pCsr->zToken)>=(pCsr->nAlloc-4) ){
char *zNew = sqlite3_realloc(pCsr->zToken, pCsr->nAlloc+64);
if( !zNew ) return SQLITE_NOMEM;
zOut = &zNew[zOut - pCsr->zToken];
pCsr->zToken = zNew;
}
/* Write the folded case of the last character read to the output */
zEnd = z;
WRITE_UTF8(zOut, sqlite3FtsUnicodeTolower(iCode));
/* If the cursor is not at EOF, read the next character */
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do {
/* Grow the output buffer if required. */
if( (zOut-pCsr->zToken)>=(pCsr->nAlloc-4) ){
char *zNew = sqlite3_realloc(pCsr->zToken, pCsr->nAlloc+64);
if( !zNew ) return SQLITE_NOMEM;
zOut = &zNew[zOut - pCsr->zToken];
pCsr->zToken = zNew;
pCsr->nAlloc += 64;
}
/* Write the folded case of the last character read to the output */
zEnd = z;
WRITE_UTF8(zOut, sqlite3FtsUnicodeTolower(iCode));
/* If the cursor is not at EOF, read the next character */
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Changes to ext/fts3/fts3_unicode2.c.
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0x07C94002, 0x07CC0021, 0x07CCC006, 0x07CCDC46, 0x07CE0014,
0x07CE8025, 0x07CF1805, 0x07CF8011, 0x07D0003F, 0x07D10001,
0x07D108B6, 0x07D3E404, 0x07D4003E, 0x07D50004, 0x07D54018,
0x07D7EC46, 0x07D9140B, 0x07DA0046, 0x07DC0074, 0x38000401,
0x38008060, 0x380400F0, 0x3C000001, 0x3FFFF401, 0x40000001,
0x43FFF401,
};
if( c<(1<<22) ){
unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
int iRes;
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
if( key >= aEntry[iTest] ){
................................................................................
};
int ret = c;
assert( c>=0 );
assert( sizeof(unsigned short)==2 && sizeof(unsigned char)==1 );
if( c<65536 ){
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
int iRes = -1;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
int cmp = (c - aEntry[iTest].iCode);
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0x07C94002, 0x07CC0021, 0x07CCC006, 0x07CCDC46, 0x07CE0014,
0x07CE8025, 0x07CF1805, 0x07CF8011, 0x07D0003F, 0x07D10001,
0x07D108B6, 0x07D3E404, 0x07D4003E, 0x07D50004, 0x07D54018,
0x07D7EC46, 0x07D9140B, 0x07DA0046, 0x07DC0074, 0x38000401,
0x38008060, 0x380400F0, 0x3C000001, 0x3FFFF401, 0x40000001,
0x43FFF401,
};
static const unsigned int aAscii[4] = {
0xFFFFFFFF, 0xFC00FFFF, 0xF8000001, 0xF8000001,
};
if( c<128 ){
return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 );
}else if( c<(1<<22) ){
unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
int iRes;
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
if( key >= aEntry[iTest] ){
................................................................................
};
int ret = c;
assert( c>=0 );
assert( sizeof(unsigned short)==2 && sizeof(unsigned char)==1 );
if( c<128 ){
if( c>='A' && c<='Z' ) ret = c + ('a' - 'A');
}else if( c<65536 ){
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
int iRes = -1;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
int cmp = (c - aEntry[iTest].iCode);
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Changes to ext/fts3/unicode/mkunicode.tcl.
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if {($i % 5)==0} {puts "" ; puts -nonewline " "}
puts -nonewline " $u32,"
incr i
}
puts ""
puts " \};"
}
proc print_isalnum {zFunc lRange} {
puts "/*"
puts "** Return true if the argument corresponds to a unicode codepoint"
puts "** classified as either a letter or a number. Otherwise false."
puts "**"
puts "** The results are undefined if the value passed to this function"
puts "** is less than zero."
puts "*/"
puts "int ${zFunc}\(int c)\{"
an_print_range_array $lRange
puts {
if( c<(1<<22) ){
unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
int iRes;
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
if( key >= aEntry[iTest] ){
................................................................................
tl_print_table_footer toggle
puts {
int ret = c;
assert( c>=0 );
assert( sizeof(unsigned short)==2 && sizeof(unsigned char)==1 );
if( c<65536 ){
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
int iRes = -1;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
int cmp = (c - aEntry[iTest].iCode);
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if {($i % 5)==0} {puts "" ; puts -nonewline " "}
puts -nonewline " $u32,"
incr i
}
puts ""
puts " \};"
}
proc an_print_ascii_bitmap {lRange} {
foreach range $lRange {
foreach {iFirst nRange} $range {}
for {set i $iFirst} {$i < ($iFirst+$nRange)} {incr i} {
if {$i<=127} { set a($i) 1 }
}
}
set aAscii [list 0 0 0 0]
foreach key [array names a] {
set idx [expr $key >> 5]
lset aAscii $idx [expr [lindex $aAscii $idx] | (1 << ($key&0x001F))]
}
puts " static const unsigned int aAscii\[4\] = \{"
puts -nonewline " "
foreach v $aAscii { puts -nonewline [format " 0x%08X," $v] }
puts ""
puts " \};"
}
proc print_isalnum {zFunc lRange} {
puts "/*"
puts "** Return true if the argument corresponds to a unicode codepoint"
puts "** classified as either a letter or a number. Otherwise false."
puts "**"
puts "** The results are undefined if the value passed to this function"
puts "** is less than zero."
puts "*/"
puts "int ${zFunc}\(int c)\{"
an_print_range_array $lRange
an_print_ascii_bitmap $lRange
puts {
if( c<128 ){
return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 );
}else if( c<(1<<22) ){
unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
int iRes;
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
if( key >= aEntry[iTest] ){
................................................................................
tl_print_table_footer toggle
puts {
int ret = c;
assert( c>=0 );
assert( sizeof(unsigned short)==2 && sizeof(unsigned char)==1 );
if( c<128 ){
if( c>='A' && c<='Z' ) ret = c + ('a' - 'A');
}else if( c<65536 ){
int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
int iLo = 0;
int iRes = -1;
while( iHi>=iLo ){
int iTest = (iHi + iLo) / 2;
int cmp = (c - aEntry[iTest].iCode);
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