mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-05-23 22:02:27 +00:00
Added sqlite-preprocessed-3350500
From https://www.sqlite.org/2021/sqlite-preprocessed-3350500.zip
This commit is contained in:
Justine Tunney
parent
4577f7fe11
commit
644f290035
157 changed files with 287529 additions and 0 deletions
290
third_party/sqlite3/complete.c
vendored
Normal file
290
third_party/sqlite3/complete.c
vendored
Normal file
|
|
@ -0,0 +1,290 @@
|
|||
/*
|
||||
** 2001 September 15
|
||||
**
|
||||
** The author disclaims copyright to this source code. In place of
|
||||
** a legal notice, here is a blessing:
|
||||
**
|
||||
** May you do good and not evil.
|
||||
** May you find forgiveness for yourself and forgive others.
|
||||
** May you share freely, never taking more than you give.
|
||||
**
|
||||
*************************************************************************
|
||||
** An tokenizer for SQL
|
||||
**
|
||||
** This file contains C code that implements the sqlite3_complete() API.
|
||||
** This code used to be part of the tokenizer.c source file. But by
|
||||
** separating it out, the code will be automatically omitted from
|
||||
** static links that do not use it.
|
||||
*/
|
||||
#include "sqliteInt.h"
|
||||
#ifndef SQLITE_OMIT_COMPLETE
|
||||
|
||||
/*
|
||||
** This is defined in tokenize.c. We just have to import the definition.
|
||||
*/
|
||||
#ifndef SQLITE_AMALGAMATION
|
||||
#ifdef SQLITE_ASCII
|
||||
#define IdChar(C) ((sqlite3CtypeMap[(unsigned char)C]&0x46)!=0)
|
||||
#endif
|
||||
#ifdef SQLITE_EBCDIC
|
||||
extern const char sqlite3IsEbcdicIdChar[];
|
||||
#define IdChar(C) (((c=C)>=0x42 && sqlite3IsEbcdicIdChar[c-0x40]))
|
||||
#endif
|
||||
#endif /* SQLITE_AMALGAMATION */
|
||||
|
||||
|
||||
/*
|
||||
** Token types used by the sqlite3_complete() routine. See the header
|
||||
** comments on that procedure for additional information.
|
||||
*/
|
||||
#define tkSEMI 0
|
||||
#define tkWS 1
|
||||
#define tkOTHER 2
|
||||
#ifndef SQLITE_OMIT_TRIGGER
|
||||
#define tkEXPLAIN 3
|
||||
#define tkCREATE 4
|
||||
#define tkTEMP 5
|
||||
#define tkTRIGGER 6
|
||||
#define tkEND 7
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Return TRUE if the given SQL string ends in a semicolon.
|
||||
**
|
||||
** Special handling is require for CREATE TRIGGER statements.
|
||||
** Whenever the CREATE TRIGGER keywords are seen, the statement
|
||||
** must end with ";END;".
|
||||
**
|
||||
** This implementation uses a state machine with 8 states:
|
||||
**
|
||||
** (0) INVALID We have not yet seen a non-whitespace character.
|
||||
**
|
||||
** (1) START At the beginning or end of an SQL statement. This routine
|
||||
** returns 1 if it ends in the START state and 0 if it ends
|
||||
** in any other state.
|
||||
**
|
||||
** (2) NORMAL We are in the middle of statement which ends with a single
|
||||
** semicolon.
|
||||
**
|
||||
** (3) EXPLAIN The keyword EXPLAIN has been seen at the beginning of
|
||||
** a statement.
|
||||
**
|
||||
** (4) CREATE The keyword CREATE has been seen at the beginning of a
|
||||
** statement, possibly preceded by EXPLAIN and/or followed by
|
||||
** TEMP or TEMPORARY
|
||||
**
|
||||
** (5) TRIGGER We are in the middle of a trigger definition that must be
|
||||
** ended by a semicolon, the keyword END, and another semicolon.
|
||||
**
|
||||
** (6) SEMI We've seen the first semicolon in the ";END;" that occurs at
|
||||
** the end of a trigger definition.
|
||||
**
|
||||
** (7) END We've seen the ";END" of the ";END;" that occurs at the end
|
||||
** of a trigger definition.
|
||||
**
|
||||
** Transitions between states above are determined by tokens extracted
|
||||
** from the input. The following tokens are significant:
|
||||
**
|
||||
** (0) tkSEMI A semicolon.
|
||||
** (1) tkWS Whitespace.
|
||||
** (2) tkOTHER Any other SQL token.
|
||||
** (3) tkEXPLAIN The "explain" keyword.
|
||||
** (4) tkCREATE The "create" keyword.
|
||||
** (5) tkTEMP The "temp" or "temporary" keyword.
|
||||
** (6) tkTRIGGER The "trigger" keyword.
|
||||
** (7) tkEND The "end" keyword.
|
||||
**
|
||||
** Whitespace never causes a state transition and is always ignored.
|
||||
** This means that a SQL string of all whitespace is invalid.
|
||||
**
|
||||
** If we compile with SQLITE_OMIT_TRIGGER, all of the computation needed
|
||||
** to recognize the end of a trigger can be omitted. All we have to do
|
||||
** is look for a semicolon that is not part of an string or comment.
|
||||
*/
|
||||
int sqlite3_complete(const char *zSql){
|
||||
u8 state = 0; /* Current state, using numbers defined in header comment */
|
||||
u8 token; /* Value of the next token */
|
||||
|
||||
#ifndef SQLITE_OMIT_TRIGGER
|
||||
/* A complex statement machine used to detect the end of a CREATE TRIGGER
|
||||
** statement. This is the normal case.
|
||||
*/
|
||||
static const u8 trans[8][8] = {
|
||||
/* Token: */
|
||||
/* State: ** SEMI WS OTHER EXPLAIN CREATE TEMP TRIGGER END */
|
||||
/* 0 INVALID: */ { 1, 0, 2, 3, 4, 2, 2, 2, },
|
||||
/* 1 START: */ { 1, 1, 2, 3, 4, 2, 2, 2, },
|
||||
/* 2 NORMAL: */ { 1, 2, 2, 2, 2, 2, 2, 2, },
|
||||
/* 3 EXPLAIN: */ { 1, 3, 3, 2, 4, 2, 2, 2, },
|
||||
/* 4 CREATE: */ { 1, 4, 2, 2, 2, 4, 5, 2, },
|
||||
/* 5 TRIGGER: */ { 6, 5, 5, 5, 5, 5, 5, 5, },
|
||||
/* 6 SEMI: */ { 6, 6, 5, 5, 5, 5, 5, 7, },
|
||||
/* 7 END: */ { 1, 7, 5, 5, 5, 5, 5, 5, },
|
||||
};
|
||||
#else
|
||||
/* If triggers are not supported by this compile then the statement machine
|
||||
** used to detect the end of a statement is much simpler
|
||||
*/
|
||||
static const u8 trans[3][3] = {
|
||||
/* Token: */
|
||||
/* State: ** SEMI WS OTHER */
|
||||
/* 0 INVALID: */ { 1, 0, 2, },
|
||||
/* 1 START: */ { 1, 1, 2, },
|
||||
/* 2 NORMAL: */ { 1, 2, 2, },
|
||||
};
|
||||
#endif /* SQLITE_OMIT_TRIGGER */
|
||||
|
||||
#ifdef SQLITE_ENABLE_API_ARMOR
|
||||
if( zSql==0 ){
|
||||
(void)SQLITE_MISUSE_BKPT;
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
while( *zSql ){
|
||||
switch( *zSql ){
|
||||
case ';': { /* A semicolon */
|
||||
token = tkSEMI;
|
||||
break;
|
||||
}
|
||||
case ' ':
|
||||
case '\r':
|
||||
case '\t':
|
||||
case '\n':
|
||||
case '\f': { /* White space is ignored */
|
||||
token = tkWS;
|
||||
break;
|
||||
}
|
||||
case '/': { /* C-style comments */
|
||||
if( zSql[1]!='*' ){
|
||||
token = tkOTHER;
|
||||
break;
|
||||
}
|
||||
zSql += 2;
|
||||
while( zSql[0] && (zSql[0]!='*' || zSql[1]!='/') ){ zSql++; }
|
||||
if( zSql[0]==0 ) return 0;
|
||||
zSql++;
|
||||
token = tkWS;
|
||||
break;
|
||||
}
|
||||
case '-': { /* SQL-style comments from "--" to end of line */
|
||||
if( zSql[1]!='-' ){
|
||||
token = tkOTHER;
|
||||
break;
|
||||
}
|
||||
while( *zSql && *zSql!='\n' ){ zSql++; }
|
||||
if( *zSql==0 ) return state==1;
|
||||
token = tkWS;
|
||||
break;
|
||||
}
|
||||
case '[': { /* Microsoft-style identifiers in [...] */
|
||||
zSql++;
|
||||
while( *zSql && *zSql!=']' ){ zSql++; }
|
||||
if( *zSql==0 ) return 0;
|
||||
token = tkOTHER;
|
||||
break;
|
||||
}
|
||||
case '`': /* Grave-accent quoted symbols used by MySQL */
|
||||
case '"': /* single- and double-quoted strings */
|
||||
case '\'': {
|
||||
int c = *zSql;
|
||||
zSql++;
|
||||
while( *zSql && *zSql!=c ){ zSql++; }
|
||||
if( *zSql==0 ) return 0;
|
||||
token = tkOTHER;
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
#ifdef SQLITE_EBCDIC
|
||||
unsigned char c;
|
||||
#endif
|
||||
if( IdChar((u8)*zSql) ){
|
||||
/* Keywords and unquoted identifiers */
|
||||
int nId;
|
||||
for(nId=1; IdChar(zSql[nId]); nId++){}
|
||||
#ifdef SQLITE_OMIT_TRIGGER
|
||||
token = tkOTHER;
|
||||
#else
|
||||
switch( *zSql ){
|
||||
case 'c': case 'C': {
|
||||
if( nId==6 && sqlite3StrNICmp(zSql, "create", 6)==0 ){
|
||||
token = tkCREATE;
|
||||
}else{
|
||||
token = tkOTHER;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case 't': case 'T': {
|
||||
if( nId==7 && sqlite3StrNICmp(zSql, "trigger", 7)==0 ){
|
||||
token = tkTRIGGER;
|
||||
}else if( nId==4 && sqlite3StrNICmp(zSql, "temp", 4)==0 ){
|
||||
token = tkTEMP;
|
||||
}else if( nId==9 && sqlite3StrNICmp(zSql, "temporary", 9)==0 ){
|
||||
token = tkTEMP;
|
||||
}else{
|
||||
token = tkOTHER;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case 'e': case 'E': {
|
||||
if( nId==3 && sqlite3StrNICmp(zSql, "end", 3)==0 ){
|
||||
token = tkEND;
|
||||
}else
|
||||
#ifndef SQLITE_OMIT_EXPLAIN
|
||||
if( nId==7 && sqlite3StrNICmp(zSql, "explain", 7)==0 ){
|
||||
token = tkEXPLAIN;
|
||||
}else
|
||||
#endif
|
||||
{
|
||||
token = tkOTHER;
|
||||
}
|
||||
break;
|
||||
}
|
||||
default: {
|
||||
token = tkOTHER;
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif /* SQLITE_OMIT_TRIGGER */
|
||||
zSql += nId-1;
|
||||
}else{
|
||||
/* Operators and special symbols */
|
||||
token = tkOTHER;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
state = trans[state][token];
|
||||
zSql++;
|
||||
}
|
||||
return state==1;
|
||||
}
|
||||
|
||||
#ifndef SQLITE_OMIT_UTF16
|
||||
/*
|
||||
** This routine is the same as the sqlite3_complete() routine described
|
||||
** above, except that the parameter is required to be UTF-16 encoded, not
|
||||
** UTF-8.
|
||||
*/
|
||||
int sqlite3_complete16(const void *zSql){
|
||||
sqlite3_value *pVal;
|
||||
char const *zSql8;
|
||||
int rc;
|
||||
|
||||
#ifndef SQLITE_OMIT_AUTOINIT
|
||||
rc = sqlite3_initialize();
|
||||
if( rc ) return rc;
|
||||
#endif
|
||||
pVal = sqlite3ValueNew(0);
|
||||
sqlite3ValueSetStr(pVal, -1, zSql, SQLITE_UTF16NATIVE, SQLITE_STATIC);
|
||||
zSql8 = sqlite3ValueText(pVal, SQLITE_UTF8);
|
||||
if( zSql8 ){
|
||||
rc = sqlite3_complete(zSql8);
|
||||
}else{
|
||||
rc = SQLITE_NOMEM_BKPT;
|
||||
}
|
||||
sqlite3ValueFree(pVal);
|
||||
return rc & 0xff;
|
||||
}
|
||||
#endif /* SQLITE_OMIT_UTF16 */
|
||||
#endif /* SQLITE_OMIT_COMPLETE */
|
||||
Loading…
Add table
Add a link
Reference in a new issue