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Overview
Comment: | Add the test_regexp.c module containing a cross-platform implementation of the REGEXP operator. |
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Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
46c8c01b751c1ea7fc02cc35e3b5bb99 |
User & Date: | drh 2012-12-31 19:18:38.256 |
Context
2012-12-31
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20:16 | More test cases for the REGEXP operator. Fix minor bugs uncovered by these test cases. (check-in: a611c75061 user: drh tags: trunk) | |
19:18 | Add the test_regexp.c module containing a cross-platform implementation of the REGEXP operator. (check-in: 46c8c01b75 user: drh tags: trunk) | |
2012-12-21
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16:15 | Ensure the database size field in the db header of a backup database is set correctly. Fix for [0cfd98ee201]. (check-in: ff6857b6ed user: dan tags: trunk) | |
Changes
Changes to Makefile.in.
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366 367 368 369 370 371 372 373 374 375 376 377 378 379 | $(TOP)/src/test_malloc.c \ $(TOP)/src/test_multiplex.c \ $(TOP)/src/test_mutex.c \ $(TOP)/src/test_onefile.c \ $(TOP)/src/test_osinst.c \ $(TOP)/src/test_pcache.c \ $(TOP)/src/test_quota.c \ $(TOP)/src/test_rtree.c \ $(TOP)/src/test_schema.c \ $(TOP)/src/test_server.c \ $(TOP)/src/test_superlock.c \ $(TOP)/src/test_syscall.c \ $(TOP)/src/test_stat.c \ $(TOP)/src/test_tclvar.c \ | > | 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 | $(TOP)/src/test_malloc.c \ $(TOP)/src/test_multiplex.c \ $(TOP)/src/test_mutex.c \ $(TOP)/src/test_onefile.c \ $(TOP)/src/test_osinst.c \ $(TOP)/src/test_pcache.c \ $(TOP)/src/test_quota.c \ $(TOP)/src/test_regexp.c \ $(TOP)/src/test_rtree.c \ $(TOP)/src/test_schema.c \ $(TOP)/src/test_server.c \ $(TOP)/src/test_superlock.c \ $(TOP)/src/test_syscall.c \ $(TOP)/src/test_stat.c \ $(TOP)/src/test_tclvar.c \ |
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Changes to Makefile.msc.
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687 688 689 690 691 692 693 694 695 696 697 698 699 700 | $(TOP)\src\test_malloc.c \ $(TOP)\src\test_multiplex.c \ $(TOP)\src\test_mutex.c \ $(TOP)\src\test_onefile.c \ $(TOP)\src\test_osinst.c \ $(TOP)\src\test_pcache.c \ $(TOP)\src\test_quota.c \ $(TOP)\src\test_rtree.c \ $(TOP)\src\test_schema.c \ $(TOP)\src\test_server.c \ $(TOP)\src\test_superlock.c \ $(TOP)\src\test_syscall.c \ $(TOP)\src\test_stat.c \ $(TOP)\src\test_tclvar.c \ | > | 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 | $(TOP)\src\test_malloc.c \ $(TOP)\src\test_multiplex.c \ $(TOP)\src\test_mutex.c \ $(TOP)\src\test_onefile.c \ $(TOP)\src\test_osinst.c \ $(TOP)\src\test_pcache.c \ $(TOP)\src\test_quota.c \ $(TOP)\src\test_regexp.c \ $(TOP)\src\test_rtree.c \ $(TOP)\src\test_schema.c \ $(TOP)\src\test_server.c \ $(TOP)\src\test_superlock.c \ $(TOP)\src\test_syscall.c \ $(TOP)\src\test_stat.c \ $(TOP)\src\test_tclvar.c \ |
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Changes to main.mk.
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249 250 251 252 253 254 255 256 257 258 259 260 261 262 | $(TOP)/src/test_malloc.c \ $(TOP)/src/test_multiplex.c \ $(TOP)/src/test_mutex.c \ $(TOP)/src/test_onefile.c \ $(TOP)/src/test_osinst.c \ $(TOP)/src/test_pcache.c \ $(TOP)/src/test_quota.c \ $(TOP)/src/test_rtree.c \ $(TOP)/src/test_schema.c \ $(TOP)/src/test_server.c \ $(TOP)/src/test_stat.c \ $(TOP)/src/test_sqllog.c \ $(TOP)/src/test_superlock.c \ $(TOP)/src/test_syscall.c \ | > | 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 | $(TOP)/src/test_malloc.c \ $(TOP)/src/test_multiplex.c \ $(TOP)/src/test_mutex.c \ $(TOP)/src/test_onefile.c \ $(TOP)/src/test_osinst.c \ $(TOP)/src/test_pcache.c \ $(TOP)/src/test_quota.c \ $(TOP)/src/test_regexp.c \ $(TOP)/src/test_rtree.c \ $(TOP)/src/test_schema.c \ $(TOP)/src/test_server.c \ $(TOP)/src/test_stat.c \ $(TOP)/src/test_sqllog.c \ $(TOP)/src/test_superlock.c \ $(TOP)/src/test_syscall.c \ |
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Changes to src/shell.c.
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1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 | if( db==0 || SQLITE_OK!=sqlite3_errcode(db) ){ fprintf(stderr,"Error: unable to open database \"%s\": %s\n", p->zDbFilename, sqlite3_errmsg(db)); exit(1); } #ifndef SQLITE_OMIT_LOAD_EXTENSION sqlite3_enable_load_extension(p->db, 1); #endif } } /* ** Do C-language style dequoting. ** | > > > > > > | 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 | if( db==0 || SQLITE_OK!=sqlite3_errcode(db) ){ fprintf(stderr,"Error: unable to open database \"%s\": %s\n", p->zDbFilename, sqlite3_errmsg(db)); exit(1); } #ifndef SQLITE_OMIT_LOAD_EXTENSION sqlite3_enable_load_extension(p->db, 1); #endif #ifdef SQLITE_ENABLE_REGEXP { extern sqlite3_add_regexp_func(sqlite3*); sqlite3_add_regexp_func(db); } #endif } } /* ** Do C-language style dequoting. ** |
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Changes to src/tclsqlite.c.
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3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 | extern int Sqlitetestrtree_Init(Tcl_Interp*); extern int Sqlitequota_Init(Tcl_Interp*); extern int Sqlitemultiplex_Init(Tcl_Interp*); extern int SqliteSuperlock_Init(Tcl_Interp*); extern int SqlitetestSyscall_Init(Tcl_Interp*); extern int Sqlitetestfuzzer_Init(Tcl_Interp*); extern int Sqlitetestwholenumber_Init(Tcl_Interp*); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) extern int Sqlitetestfts3_Init(Tcl_Interp *interp); #endif #ifdef SQLITE_ENABLE_ZIPVFS extern int Zipvfs_Init(Tcl_Interp*); | > | 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 | extern int Sqlitetestrtree_Init(Tcl_Interp*); extern int Sqlitequota_Init(Tcl_Interp*); extern int Sqlitemultiplex_Init(Tcl_Interp*); extern int SqliteSuperlock_Init(Tcl_Interp*); extern int SqlitetestSyscall_Init(Tcl_Interp*); extern int Sqlitetestfuzzer_Init(Tcl_Interp*); extern int Sqlitetestwholenumber_Init(Tcl_Interp*); extern int Sqlitetestregexp_Init(Tcl_Interp*); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) extern int Sqlitetestfts3_Init(Tcl_Interp *interp); #endif #ifdef SQLITE_ENABLE_ZIPVFS extern int Zipvfs_Init(Tcl_Interp*); |
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3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 | Sqlitetestrtree_Init(interp); Sqlitequota_Init(interp); Sqlitemultiplex_Init(interp); SqliteSuperlock_Init(interp); SqlitetestSyscall_Init(interp); Sqlitetestfuzzer_Init(interp); Sqlitetestwholenumber_Init(interp); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) Sqlitetestfts3_Init(interp); #endif Tcl_CreateObjCommand( interp, "load_testfixture_extensions", init_all_cmd, 0, 0 | > | 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 | Sqlitetestrtree_Init(interp); Sqlitequota_Init(interp); Sqlitemultiplex_Init(interp); SqliteSuperlock_Init(interp); SqlitetestSyscall_Init(interp); Sqlitetestfuzzer_Init(interp); Sqlitetestwholenumber_Init(interp); Sqlitetestregexp_Init(interp); #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) Sqlitetestfts3_Init(interp); #endif Tcl_CreateObjCommand( interp, "load_testfixture_extensions", init_all_cmd, 0, 0 |
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Added src/test_regexp.c.
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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. ** ****************************************************************************** ** ** The code in this file implements a compact but reasonably ** efficient regular-expression matcher for posix extended regular ** expressions against UTF8 text. The following syntax is supported: ** ** X* zero or more occurrences of X ** X+ one or more occurrences of X ** X? zero or one occurrences of X ** X{p,q} between p and q occurrences of X ** (X) match X ** X|Y X or Y ** ^X X occurring at the beginning of the string ** X$ X occurring at the end of the string ** . Match any single character ** \c Character c where c is one of \{}()[]|*+?. ** \c C-language escapes for c in afnrtv. ex: \t or \n ** \uXXXX Where XXXX is exactly 4 hex digits, unicode value XXXX ** \xXXX Where XXX is any number of hex digits, unicode value XXX ** [abc] Any single character from the set abc ** [^abc] Any single character not in the set abc ** [a-z] Any single character in the range a-z ** [^a-z] Any single character not in the range a-z ** \b Word boundary ** \w Word character. [A-Za-z0-9_] ** \W Non-word character ** \d Digit ** \D Non-digit ** \s Whitespace character ** \S Non-whitespace character ** ** A nondeterministic finite automaton (NFA) is used for matching, so the ** performance is bounded by O(N*M) where N is the size of the regular ** expression and M is the size of the input string. The matcher never ** exhibits exponential behavior. Note that the X{p,q} operator expands ** to p copies of X following by q-p copies of X? and that the size of the ** regular expression in the O(N*M) performance bound is computed after ** this expansion. */ #include <string.h> #include <stdlib.h> #include "sqlite3.h" /* The end-of-input character */ #define RE_EOF 0 /* End of input */ /* The NFA is implemented as sequence of opcodes taken from the following ** set. Each opcode has a single integer argument. */ #define RE_OP_MATCH 1 /* Match the one character in the argument */ #define RE_OP_ANY 2 /* Match any one character. (Implements ".") */ #define RE_OP_ANYSTAR 3 /* Special optimized version of .* */ #define RE_OP_FORK 4 /* Continue to both next and opcode at iArg */ #define RE_OP_GOTO 5 /* Jump to opcode at iArg */ #define RE_OP_ACCEPT 6 /* Halt and indicate a successful match */ #define RE_OP_CC_INC 7 /* Beginning of a [...] character class */ #define RE_OP_CC_EXC 8 /* Beginning of a [^...] character class */ #define RE_OP_CC_VALUE 9 /* Single value in a character class */ #define RE_OP_CC_RANGE 10 /* Range of values in a character class */ #define RE_OP_WORD 11 /* Perl word character [A-Za-z0-9_] */ #define RE_OP_NOTWORD 12 /* Not a perl word character */ #define RE_OP_DIGIT 13 /* digit: [0-9] */ #define RE_OP_NOTDIGIT 14 /* Not a digit */ #define RE_OP_SPACE 15 /* space: [ \t\n\r\v\f] */ #define RE_OP_NOTSPACE 16 /* Not a digit */ #define RE_OP_BOUNDARY 17 /* Boundary between word and non-word */ /* Each opcode is a "state" in the NFA */ typedef unsigned short ReStateNumber; /* Because this is an NFA and not a DFA, multiple states can be active at ** once. An instance of the following object records all active states in ** the NFA. The implementation is optimized for the common case where the ** number of actives states is small. */ typedef struct ReStateSet { unsigned nState; /* Number of current states */ ReStateNumber *aState; /* Current states */ } ReStateSet; /* A compiled NFA (or an NFA that is in the process of being compiled) is ** an instance of the following object. */ typedef struct ReCompiled { const unsigned char *zIn; /* Regular expression text */ const char *zErr; /* Error message to return */ char *aOp; /* Operators for the virtual machine */ int *aArg; /* Arguments to each operator */ char zInit[12]; /* Initial text to match */ int nInit; /* Number of characters in zInit */ unsigned nState; /* Number of entries in aOp[] and aArg[] */ unsigned nAlloc; /* Slots allocated for aOp[] and aArg[] */ } ReCompiled; /* Add a state to the given state set if it is not already there */ static void re_add_state(ReStateSet *pSet, int newState){ unsigned i; for(i=0; i<pSet->nState; i++) if( pSet->aState[i]==newState ) return; pSet->aState[pSet->nState++] = newState; } /* Extract the next unicode character from *pzIn and return it. Advance ** *pzIn to the first byte past the end of the character returned. To ** be clear: this routine converts utf8 to unicode. This routine is ** optimized for the common case where the next character is a single byte. */ static unsigned re_next_char(const unsigned char **pzIn){ unsigned c = **pzIn; if( c>0 ) (*pzIn)++; if( c>0x80 ){ if( (c&0xe0)==0xc0 && ((*pzIn)[0]&0xc0)==0x80 ){ c = (c&0x1f)<<6 | ((*pzIn)[0]&0x3f); (*pzIn)++; if( c<0x80 ) c = 0xfffd; }else if( (c&0xf0)==0xe0 && ((*pzIn)[0]&0xc0)==0x80 && ((*pzIn)[1]&0xc0)==0x80 ){ c = (c&0x0f)<<12 | (((*pzIn)[0]&0x3f)<<6) | ((*pzIn)[1]&0x3f); *pzIn += 2; if( c<0x3ff || (c>=0xd800 && c<=0xdfff) ) c = 0xfffd; }else if( (c&0xf8)==0xf0 && ((*pzIn)[0]&0xc0)==0x80 && ((*pzIn)[1]&0xc0)==0x80 && ((*pzIn)[2]&0xc0)==0x80 ){ c = (c&0x07)<<18 | (((*pzIn)[0]&0x3f)<<12) | (((*pzIn)[1]&0x3f)<<6) | ((*pzIn)[2]&0x3f); *pzIn += 3; if( c<0xffff ) c = 0xfffd; }else{ c = 0xfffd; } } return c; } /* Return true if c is a perl "word" character: [A-Za-z0-9_] */ static int re_word_char(int c){ return (c>='0' && c<='9') || (c>='a' && c<='z') || (c>='A' && c<='Z') || c=='_'; } /* Return true if c is a "digit" character: [0-9] */ static int re_digit_char(int c){ return (c>='0' && c<='9'); } /* Return true if c is a perl "space" character: [ \t\r\n\v\f] */ static int re_space_char(int c){ return c==' ' || c=='\t' || c=='\n' || c=='\v' || c=='\f'; } /* Run a compiled regular expression on the zero-terminated input ** string zIn[]. Return true on a match and false if there is no match. */ static int re_exec(ReCompiled *pRe, const unsigned char *zIn){ ReStateSet aStateSet[2], *pThis, *pNext; ReStateNumber aSpace[100]; ReStateNumber *pToFree; unsigned int i = 0; unsigned int iSwap = 0; int c = RE_EOF+1; int cPrev = 0; int rc = 0; if( pRe->nInit ){ unsigned char x = pRe->zInit[0]; while( zIn[0] && (zIn[0]!=x || memcmp(zIn, pRe->zInit, pRe->nInit)!=0) ){ zIn++; } if( zIn[0]==0 ) return 0; } if( pRe->nState<=(sizeof(aSpace)/(sizeof(aSpace[0])*2)) ){ pToFree = 0; aStateSet[0].aState = aSpace; }else{ pToFree = malloc( sizeof(ReStateNumber)*2*pRe->nState ); if( pToFree==0 ) return -1; aStateSet[0].aState = pToFree; } aStateSet[1].aState = &aStateSet[0].aState[pRe->nState]; pNext = &aStateSet[1]; pNext->nState = 0; re_add_state(pNext, 0); while( c!=RE_EOF && pNext->nState>0 ){ cPrev = c; c = re_next_char(&zIn); pThis = pNext; pNext = &aStateSet[iSwap]; iSwap = 1 - iSwap; pNext->nState = 0; for(i=0; i<pThis->nState; i++){ int x = pThis->aState[i]; switch( pRe->aOp[x] ){ case RE_OP_MATCH: { if( pRe->aArg[x]==c ) re_add_state(pNext, x+1); break; } case RE_OP_ANY: { re_add_state(pNext, x+1); break; } case RE_OP_WORD: { if( re_word_char(c) ) re_add_state(pNext, x+1); break; } case RE_OP_NOTWORD: { if( !re_word_char(c) ) re_add_state(pNext, x+1); break; } case RE_OP_DIGIT: { if( re_digit_char(c) ) re_add_state(pNext, x+1); break; } case RE_OP_NOTDIGIT: { if( !re_digit_char(c) ) re_add_state(pNext, x+1); break; } case RE_OP_SPACE: { if( re_space_char(c) ) re_add_state(pNext, x+1); break; } case RE_OP_NOTSPACE: { if( !re_space_char(c) ) re_add_state(pNext, x+1); break; } case RE_OP_BOUNDARY: { if( re_word_char(c)!=re_word_char(cPrev) ) re_add_state(pThis, x+1); break; } case RE_OP_ANYSTAR: { re_add_state(pNext, x); re_add_state(pThis, x+1); break; } case RE_OP_FORK: { re_add_state(pThis, x+pRe->aArg[x]); re_add_state(pThis, x+1); break; } case RE_OP_GOTO: { re_add_state(pThis, x+pRe->aArg[x]); break; } case RE_OP_ACCEPT: { rc = 1; goto re_exec_end; } case RE_OP_CC_INC: case RE_OP_CC_EXC: { int j = 1; int n = pRe->aArg[x]; int hit = 0; for(j=1; j>0 && j<n; j++){ if( pRe->aOp[x+j]==RE_OP_CC_VALUE ){ if( pRe->aArg[x+j]==c ){ hit = 1; j = -1; } }else{ if( pRe->aArg[x+j]<=c && pRe->aArg[x+j+1]>=c ){ hit = 1; j = -1; }else{ j++; } } } if( pRe->aOp[x]==RE_OP_CC_EXC ) hit = !hit; if( hit ) re_add_state(pNext, x+n); break; } } } } for(i=0; i<pNext->nState; i++){ if( pRe->aOp[pNext->aState[i]]==RE_OP_ACCEPT ){ rc = 1; break; } } re_exec_end: free(pToFree); return rc; } /* Resize the opcode and argument arrays for an RE under construction. */ static int re_resize(ReCompiled *p, int N){ char *aOp; int *aArg; aOp = realloc(p->aOp, N*sizeof(p->aOp[0])); if( aOp==0 ) return 1; p->aOp = aOp; aArg = realloc(p->aArg, N*sizeof(p->aArg[0])); if( aArg==0 ) return 1; p->aArg = aArg; p->nAlloc = N; return 0; } /* Insert a new opcode and argument into an RE under construction. The ** insertion point is just prior to existing opcode iBefore. */ static int re_insert(ReCompiled *p, int iBefore, int op, int arg){ int i; if( p->nAlloc<=p->nState && re_resize(p, p->nAlloc*2) ) return 0; for(i=p->nState; i>iBefore; i--){ p->aOp[i] = p->aOp[i-1]; p->aArg[i] = p->aArg[i-1]; } p->nState++; p->aOp[iBefore] = op; p->aArg[iBefore] = arg; return iBefore; } /* Append a new opcode and argument to the end of the RE under construction. */ static int re_append(ReCompiled *p, int op, int arg){ return re_insert(p, p->nState, op, arg); } /* Make a copy of N opcodes starting at iStart onto the end of the RE ** under construction. */ static void re_copy(ReCompiled *p, int iStart, int N){ if( p->nState+N>=p->nAlloc && re_resize(p, p->nAlloc*2+N) ) return; memcpy(&p->aOp[p->nState], &p->aOp[iStart], N*sizeof(p->aOp[0])); memcpy(&p->aArg[p->nState], &p->aArg[iStart], N*sizeof(p->aArg[0])); p->nState += N; } /* Return true if c is a hexadecimal digit character: [0-9a-fA-F] ** If c is a hex digit, also set *pV = (*pV)*16 + valueof(c). If ** c is not a hex digit *pV is unchanged. */ static int re_hex(int c, int *pV){ if( c>='0' && c<='9' ){ c -= '0'; }else if( c>='a' && c<='f' ){ c -= 'a' + 10; }else if( c>='A' && c<='F' ){ c -= 'A' + 10; }else{ return 0; } *pV = (*pV)*16 + c; return 1; } /* A backslash character has been seen, read the next character and ** return its intepretation. */ static unsigned re_esc_char(ReCompiled *p){ static const char zEsc[] = "afnrtv\\()*.+?[$^{|"; static const char zTrans[] = "\a\f\n\r\t\v"; int i, v = 0; char c = p->zIn[0]; if( c=='u' ){ v = 0; if( re_hex(p->zIn[1],&v) && re_hex(p->zIn[2],&v) && re_hex(p->zIn[3],&v) && re_hex(p->zIn[4],&v) ){ p->zIn += 5; return v; } } if( c=='x' ){ v = 0; for(i=1; re_hex(p->zIn[i], &v); i++){} if( i>1 ){ p->zIn += i; return v; } } for(i=0; zEsc[i] && zEsc[i]!=c; i++){} if( zEsc[i] ){ if( c<6 ) c = zTrans[i]; p->zIn++; }else{ p->zErr = "unknown \\ escape"; } return c; } /* Forward declaration */ static const char *re_subcompile_string(ReCompiled*); /* Compile RE text into a sequence of opcodes. Continue up to the ** first unmatched ")" character, then return. If an error is found, ** return a pointer to the error message string. */ static const char *re_subcompile_re(ReCompiled *p){ const char *zErr; int iStart, iEnd, iGoto; iStart = p->nState; zErr = re_subcompile_string(p); if( zErr ) return zErr; while( p->zIn[0]=='|' ){ iEnd = p->nState; re_insert(p, iStart, RE_OP_FORK, iEnd + 2 - iStart); iGoto = re_append(p, RE_OP_GOTO, 0); p->zIn++; zErr = re_subcompile_string(p); if( zErr ) return zErr; p->aArg[iGoto] = p->nState - iGoto; } return 0; } /* Compile an element of regular expression text (anything that can be ** an operand to the "|" operator). Return NULL on success or a pointer ** to the error message if there is a problem. */ static const char *re_subcompile_string(ReCompiled *p){ int iPrev = -1; int iStart; unsigned c; const char *zErr; while( (c = re_next_char(&p->zIn))!=0 ){ iStart = p->nState; switch( c ){ case '|': case '$': case ')': { p->zIn--; return 0; } case '(': { zErr = re_subcompile_re(p); if( zErr ) return zErr; if( p->zIn[0]!=')' ) return "unmatched '('"; p->zIn++; break; } case '.': { if( p->zIn[0]=='*' ){ re_append(p, RE_OP_ANYSTAR, 0); p->zIn++; }else{ re_append(p, RE_OP_ANY, 0); } break; } case '*': { if( iPrev<0 ) return "'*' without operand"; re_insert(p, iPrev, RE_OP_GOTO, p->nState - iPrev + 1); re_append(p, RE_OP_FORK, iPrev - p->nState + 1); break; } case '+': { if( iPrev<0 ) return "'+' without operand"; re_append(p, RE_OP_FORK, iPrev - p->nState); break; } case '?': { if( iPrev<0 ) return "'?' without operand"; re_insert(p, iPrev, RE_OP_FORK, p->nState - iPrev+1); break; } case '{': { int m = 0, n = 0; int sz, j; if( iPrev<0 ) return "'{m,n}' without operand"; while( (c=p->zIn[0])>='0' && c<='9' ){ m = m*10 + c - '0'; p->zIn++; } n = m; if( c==',' ){ p->zIn++; n = 0; while( (c=p->zIn[0])>='0' && c<='9' ){ n = n*10 + c - '0'; p->zIn++; } } if( c!='}' ) return "unmatched '{'"; if( n>0 && n<m ) return "n less than m in '{m,n}'"; p->zIn++; sz = p->nState - iPrev; if( m==0 ){ if( n==0 ) return "both m and n are zero in '{m,n}'"; re_insert(p, iPrev, RE_OP_FORK, sz+1); n--; }else{ for(j=1; j<m; j++) re_copy(p, iPrev, sz); } for(j=m; j<n; j++){ re_append(p, RE_OP_FORK, sz+1); re_copy(p, iPrev, sz); } if( n==0 && m>0 ){ re_append(p, RE_OP_FORK, -sz); } break; } case '[': { int iFirst = p->nState; if( p->zIn[0]=='^' ){ re_append(p, RE_OP_CC_EXC, 0); p->zIn++; }else{ re_append(p, RE_OP_CC_INC, 0); } while( (c = re_next_char(&p->zIn))!=0 ){ if( c=='[' && p->zIn[0]==':' ){ return "POSIX character classes not supported"; } if( c=='\\' ) c = re_esc_char(p); if( p->zIn[0]=='-' && p->zIn[1] ){ re_append(p, RE_OP_CC_RANGE, c); p->zIn++; c = re_next_char(&p->zIn); if( c=='\\' ) c = re_esc_char(p); re_append(p, RE_OP_CC_RANGE, c); }else{ re_append(p, RE_OP_CC_VALUE, c); } if( p->zIn[0]==']' ){ p->zIn++; break; } } if( c==0 ) return "unclosed '['"; p->aArg[iFirst] = p->nState - iFirst; break; } case '\\': { int specialOp = 0; switch( p->zIn[0] ){ case 'b': specialOp = RE_OP_BOUNDARY; break; case 'd': specialOp = RE_OP_DIGIT; break; case 'D': specialOp = RE_OP_NOTDIGIT; break; case 's': specialOp = RE_OP_SPACE; break; case 'S': specialOp = RE_OP_NOTSPACE; break; case 'w': specialOp = RE_OP_WORD; break; case 'W': specialOp = RE_OP_NOTWORD; break; } if( specialOp ){ p->zIn++; re_append(p, specialOp, 0); }else{ c = re_esc_char(p); re_append(p, RE_OP_MATCH, c); } break; } default: { re_append(p, RE_OP_MATCH, c); break; } } iPrev = iStart; } return 0; } /* Free and reclaim all the memory used by a previously compiled ** regular expression. Applications should invoke this routine once ** for every call to re_compile() to avoid memory leaks. */ static void re_free(ReCompiled *pRe){ if( pRe ){ free(pRe->aOp); free(pRe->aArg); } } /* ** Compile a textual regular expression in zIn[] into a compiled regular ** expression suitable for us by re_exec() and return a pointer to the ** compiled regular expression in *ppRe. Return NULL on success or an ** error message if something goes wrong. */ static const char *re_compile(ReCompiled **ppRe, const char *zIn){ ReCompiled *pRe; const char *zErr; int i, j; *ppRe = 0; pRe = malloc( sizeof(*pRe) ); if( pRe==0 ){ return "out of memory"; } memset(pRe, 0, sizeof(*pRe)); if( re_resize(pRe, 30) ){ re_free(pRe); return "out of memory"; } if( zIn[0]=='^' ){ zIn++; }else{ re_append(pRe, RE_OP_ANYSTAR, 0); } pRe->zIn = (unsigned char*)zIn; zErr = re_subcompile_re(pRe); if( zErr ){ re_free(pRe); return zErr; } if( pRe->zIn[0]=='$' && pRe->zIn[1]==0 ){ re_append(pRe, RE_OP_MATCH, RE_EOF); re_append(pRe, RE_OP_ACCEPT, 0); *ppRe = pRe; }else if( pRe->zIn[0]==0 ){ re_append(pRe, RE_OP_ACCEPT, 0); *ppRe = pRe; }else{ re_free(pRe); return "unrecognized character"; } if( pRe->aOp[0]==RE_OP_ANYSTAR ){ for(j=0, i=1; j<sizeof(pRe->zInit)-2 && pRe->aOp[i]==RE_OP_MATCH; i++){ unsigned x = pRe->aArg[i]; if( x<=127 ){ pRe->zInit[j++] = x; }else if( x<=0xfff ){ pRe->zInit[j++] = 0xc0 | (x>>6); pRe->zInit[j++] = 0x80 | (x&0x3f); }else if( x<=0xffff ){ pRe->zInit[j++] = 0xd0 | (x>>12); pRe->zInit[j++] = 0x80 | ((x>>6)&0x3f); pRe->zInit[j++] = 0x80 | ((x>>6)&0x3f); }else{ break; } } pRe->nInit = j; } return pRe->zErr; } /* ** Implementation of the regexp() SQL function. This function implements ** the build-in REGEXP operator. The first argument to the function is the ** pattern and the second argument is the string. So, the SQL statements: ** ** A REGEXP B ** ** is implemented as regexp(B,A). */ static void re_sql_func( sqlite3_context *context, int argc, sqlite3_value **argv ){ ReCompiled *pRe; /* Compiled regular expression */ const char *zPattern; /* The regular expression */ const unsigned char *zStr;/* String being searched */ const char *zErr; /* Compile error message */ pRe = sqlite3_get_auxdata(context, 0); if( pRe==0 ){ zPattern = (const char*)sqlite3_value_text(argv[0]); if( zPattern==0 ) return; zErr = re_compile(&pRe, zPattern); if( zErr ){ sqlite3_result_error(context, zErr, -1); return; } if( pRe==0 ){ sqlite3_result_error_nomem(context); return; } sqlite3_set_auxdata(context, 0, pRe, (void(*)(void*))re_free); } zStr = (const unsigned char*)sqlite3_value_text(argv[1]); if( zStr!=0 ){ sqlite3_result_int(context, re_exec(pRe, zStr)); } } /* ** Invoke this routine in order to install the REGEXP function in an ** SQLite database connection. ** ** Use: ** ** sqlite3_auto_extension(sqlite3_add_regexp_func); ** ** to cause this extension to be automatically loaded into each new ** database connection. */ int sqlite3_add_regexp_func(sqlite3 *db){ return sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8, 0, re_sql_func, 0, 0); } /***************************** Test Code ***********************************/ #ifdef SQLITE_TEST #include <tcl.h> extern int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb); /* Implementation of the TCL command: ** ** sqlite3_add_regexp_func $DB */ static int tclSqlite3AddRegexpFunc( void * clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[] ){ sqlite3 *db; if( objc!=2 ){ Tcl_WrongNumArgs(interp, 1, objv, "DB"); return TCL_ERROR; } if( getDbPointer(interp, Tcl_GetString(objv[1]), &db) ) return TCL_ERROR; sqlite3_add_regexp_func(db); return TCL_OK; } /* Register the sqlite3_add_regexp_func TCL command with the TCL interpreter. */ int Sqlitetestregexp_Init(Tcl_Interp *interp){ Tcl_CreateObjCommand(interp, "sqlite3_add_regexp_func", tclSqlite3AddRegexpFunc, 0, 0); return TCL_OK; } #endif /* SQLITE_TEST */ /**************************** End Of Test Code *******************************/ |
Added test/regexp1.test.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | # 2012 December 31 # # 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. # #*********************************************************************** # # This file implements test for the REGEXP operator in test_regexp.c. # set testdir [file dirname $argv0] source $testdir/tester.tcl do_test regexp1-1.1 { sqlite3_add_regexp_func db db eval { CREATE TABLE t1(x INTEGER PRIMARY KEY, y TEXT); INSERT INTO t1 VALUES(1, 'For since by man came death,'); INSERT INTO t1 VALUES(2, 'by man came also the resurrection of the dead.'); INSERT INTO t1 VALUES(3, 'For as in Adam all die,'); INSERT INTO t1 VALUES(4, 'even so in Christ shall all be made alive.'); SELECT x FROM t1 WHERE y REGEXP '^For ' ORDER BY x; } } {1 3} do_execsql_test regexp1-1.2 { SELECT x FROM t1 WHERE y REGEXP 'by|in' ORDER BY x; } {1 2 3 4} do_execsql_test regexp1-1.3 { SELECT x FROM t1 WHERE y REGEXP 'by|Christ' ORDER BY x; } {1 2 4} do_execsql_test regexp1-1.4 { SELECT x FROM t1 WHERE y REGEXP 'shal+ al+' ORDER BY x; } {4} do_execsql_test regexp1-1.5 { SELECT x FROM t1 WHERE y REGEXP 'shall x*y*z*all' ORDER BY x; } {4} do_execsql_test regexp1-1.6 { SELECT x FROM t1 WHERE y REGEXP 'shallx?y? ?z?all' ORDER BY x; } {4} do_execsql_test regexp1-1.7 { SELECT x FROM t1 WHERE y REGEXP 'r{2}' ORDER BY x; } {2} do_execsql_test regexp1-1.8 { SELECT x FROM t1 WHERE y REGEXP 'r{3}' ORDER BY x; } {} do_execsql_test regexp1-1.9 { SELECT x FROM t1 WHERE y REGEXP 'r{1}' ORDER BY x; } {1 2 3 4} do_execsql_test regexp1-1.10 { SELECT x FROM t1 WHERE y REGEXP 'ur{2,10}e' ORDER BY x; } {2} do_execsql_test regexp1-1.11 { SELECT x FROM t1 WHERE y REGEXP '[Aa]dam' ORDER BY x; } {3} do_execsql_test regexp1-1.12 { SELECT x FROM t1 WHERE y REGEXP '[^Aa]dam' ORDER BY x; } {} do_execsql_test regexp1-1.13 { SELECT x FROM t1 WHERE y REGEXP '[^b-zB-Z]dam' ORDER BY x; } {3} do_execsql_test regexp1-1.14 { SELECT x FROM t1 WHERE y REGEXP 'alive' ORDER BY x; } {4} do_execsql_test regexp1-1.15 { SELECT x FROM t1 WHERE y REGEXP '^alive' ORDER BY x; } {} do_execsql_test regexp1-1.16 { SELECT x FROM t1 WHERE y REGEXP 'alive$' ORDER BY x; } {} do_execsql_test regexp1-1.17 { SELECT x FROM t1 WHERE y REGEXP 'alive.$' ORDER BY x; } {4} do_execsql_test regexp1-1.18 { SELECT x FROM t1 WHERE y REGEXP 'alive\.$' ORDER BY x; } {4} finish_test |
Changes to tool/build-shell.sh.
︙ | ︙ | |||
11 12 13 14 15 16 17 18 19 20 21 | make sqlite3.c gcc -o sqlite3 -g -Os -I. \ -DSQLITE_THREADSAFE=0 \ -DSQLITE_ENABLE_VFSTRACE \ -DSQLITE_ENABLE_STAT3 \ -DSQLITE_ENABLE_FTS4 \ -DSQLITE_ENABLE_RTREE \ -DHAVE_READLINE \ -DHAVE_USLEEP=1 \ ../sqlite/src/shell.c ../sqlite/src/test_vfstrace.c \ sqlite3.c -ldl -lreadline -lncurses | > > | 11 12 13 14 15 16 17 18 19 20 21 22 23 | make sqlite3.c gcc -o sqlite3 -g -Os -I. \ -DSQLITE_THREADSAFE=0 \ -DSQLITE_ENABLE_VFSTRACE \ -DSQLITE_ENABLE_STAT3 \ -DSQLITE_ENABLE_FTS4 \ -DSQLITE_ENABLE_RTREE \ -DSQLITE_ENABLE_REGEXP \ -DHAVE_READLINE \ -DHAVE_USLEEP=1 \ ../sqlite/src/shell.c ../sqlite/src/test_vfstrace.c \ ../sqlite/src/test_regexp.c \ sqlite3.c -ldl -lreadline -lncurses |