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Overview
Comment: | Have ".recover" handle "\r" and "\n" in the same way as ".dump". |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | dbdata |
Files: | files | file ages | folders |
SHA3-256: |
f95f0f02ab6c6cf45f25b613c7ab57f6 |
User & Date: | dan 2019-04-23 20:48:32.366 |
Context
2019-04-24
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20:48 | Improve the performance of the .recover command. (check-in: a50768314d user: dan tags: dbdata) | |
2019-04-23
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20:48 | Have ".recover" handle "\r" and "\n" in the same way as ".dump". (check-in: f95f0f02ab user: dan tags: dbdata) | |
18:03 | Fixes for the ".recover" shell command. (check-in: 8dcc1d89d9 user: dan tags: dbdata) | |
Changes
Changes to src/shell.c.in.
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3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 | p->lineno = nLine; } sqlite3_free(a); utf8_printf(stderr,"Error on line %d of --hexdb input\n", nLine); return 0; } #endif /* SQLITE_ENABLE_DESERIALIZE */ /* Flags for open_db(). ** ** The default behavior of open_db() is to exit(1) if the database fails to ** open. The OPEN_DB_KEEPALIVE flag changes that so that it prints an error ** but still returns without calling exit. ** | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 | p->lineno = nLine; } sqlite3_free(a); utf8_printf(stderr,"Error on line %d of --hexdb input\n", nLine); return 0; } #endif /* SQLITE_ENABLE_DESERIALIZE */ /* ** Scalar function "shell_escape_crnl" used by the .recover command. ** The argument passed to this function is the output of built-in ** function quote(). If the first character of the input is "'", ** indicating that the value passed to quote() was a text value, ** then this function searches the input for "\n" and "\r" characters ** and adds a wrapper similar to the following: ** ** replace(replace(<input>, '\n', char(10), '\r', char(13)); ** ** Or, if the first character of the input is not "'", then a copy ** of the input is returned. */ static void shellEscapeCrnl( sqlite3_context *context, int argc, sqlite3_value **argv ){ const char *zText = (const char*)sqlite3_value_text(argv[0]); if( zText[0]=='\'' ){ int nText = sqlite3_value_bytes(argv[0]); int i; char zBuf1[20]; char zBuf2[20]; const char *zNL = 0; const char *zCR = 0; int nCR = 0; int nNL = 0; for(i=0; zText[i]; i++){ if( zNL==0 && zText[i]=='\n' ){ zNL = unused_string(zText, "\\n", "\\012", zBuf1); nNL = (int)strlen(zNL); } if( zCR==0 && zText[i]=='\r' ){ zCR = unused_string(zText, "\\r", "\\015", zBuf2); nCR = (int)strlen(zCR); } } if( zNL || zCR ){ int iOut = 0; i64 nMax = (nNL > nCR) ? nNL : nCR; i64 nAlloc = nMax * nText + (nMax+12)*2; char *zOut = (char*)sqlite3_malloc64(nAlloc); if( zOut==0 ){ sqlite3_result_error_nomem(context); return; } if( zNL && zCR ){ memcpy(&zOut[iOut], "replace(replace(", 16); iOut += 16; }else{ memcpy(&zOut[iOut], "replace(", 8); iOut += 8; } for(i=0; zText[i]; i++){ if( zText[i]=='\n' ){ memcpy(&zOut[iOut], zNL, nNL); iOut += nNL; }else if( zText[i]=='\r' ){ memcpy(&zOut[iOut], zCR, nCR); iOut += nCR; }else{ zOut[iOut] = zText[i]; iOut++; } } if( zNL ){ memcpy(&zOut[iOut], ",'", 2); iOut += 2; memcpy(&zOut[iOut], zNL, nNL); iOut += nNL; memcpy(&zOut[iOut], "', char(10))", 12); iOut += 12; } if( zCR ){ memcpy(&zOut[iOut], ",'", 2); iOut += 2; memcpy(&zOut[iOut], zCR, nCR); iOut += nCR; memcpy(&zOut[iOut], "', char(13))", 12); iOut += 12; } sqlite3_result_text(context, zOut, iOut, SQLITE_TRANSIENT); sqlite3_free(zOut); return; } } sqlite3_result_value(context, argv[0]); } /* Flags for open_db(). ** ** The default behavior of open_db() is to exit(1) if the database fails to ** open. The OPEN_DB_KEEPALIVE flag changes that so that it prints an error ** but still returns without calling exit. ** |
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4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 | #endif sqlite3_create_function(p->db, "shell_add_schema", 3, SQLITE_UTF8, 0, shellAddSchemaName, 0, 0); sqlite3_create_function(p->db, "shell_module_schema", 1, SQLITE_UTF8, 0, shellModuleSchema, 0, 0); sqlite3_create_function(p->db, "shell_putsnl", 1, SQLITE_UTF8, p, shellPutsFunc, 0, 0); #ifndef SQLITE_NOHAVE_SYSTEM sqlite3_create_function(p->db, "edit", 1, SQLITE_UTF8, 0, editFunc, 0, 0); sqlite3_create_function(p->db, "edit", 2, SQLITE_UTF8, 0, editFunc, 0, 0); #endif if( p->openMode==SHELL_OPEN_ZIPFILE ){ | > > | 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 | #endif sqlite3_create_function(p->db, "shell_add_schema", 3, SQLITE_UTF8, 0, shellAddSchemaName, 0, 0); sqlite3_create_function(p->db, "shell_module_schema", 1, SQLITE_UTF8, 0, shellModuleSchema, 0, 0); sqlite3_create_function(p->db, "shell_putsnl", 1, SQLITE_UTF8, p, shellPutsFunc, 0, 0); sqlite3_create_function(p->db, "shell_escape_crnl", 1, SQLITE_UTF8, 0, shellEscapeCrnl, 0, 0); #ifndef SQLITE_NOHAVE_SYSTEM sqlite3_create_function(p->db, "edit", 1, SQLITE_UTF8, 0, editFunc, 0, 0); sqlite3_create_function(p->db, "edit", 2, SQLITE_UTF8, 0, editFunc, 0, 0); #endif if( p->openMode==SHELL_OPEN_ZIPFILE ){ |
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6345 6346 6347 6348 6349 6350 6351 | " max(CASE WHEN field=4 THEN value ELSE NULL END)" "FROM sqlite_dbdata WHERE pgno IN (" " SELECT pgno FROM recovery.map WHERE root=1" ")" "GROUP BY pgno, cell;" ); | < < < < < < < < < < | 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 | " max(CASE WHEN field=4 THEN value ELSE NULL END)" "FROM sqlite_dbdata WHERE pgno IN (" " SELECT pgno FROM recovery.map WHERE root=1" ")" "GROUP BY pgno, cell;" ); /* Open a transaction, then print out all non-virtual, non-"sqlite_%" ** CREATE TABLE statements that extracted from the existing schema. */ if( rc==SQLITE_OK ){ sqlite3_stmt *pStmt = 0; raw_printf(pState->out, "BEGIN;\n"); raw_printf(pState->out, "PRAGMA writable_schema = on;\n"); shellPrepare(pState->db, &rc, |
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6394 6395 6396 6397 6398 6399 6400 | pTab = recoverNewTable(pState, &rc, iRoot, bIntkey, nCol); if( pTab ){ sqlite3_stmt *pData = 0; if( 0==sqlite3_stricmp(pTab->zName, "sqlite_sequence") ){ raw_printf(pState->out, "DELETE FROM sqlite_sequence;\n"); } shellPreparePrintf(pState->db, &rc, &pData, | | | 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 | pTab = recoverNewTable(pState, &rc, iRoot, bIntkey, nCol); if( pTab ){ sqlite3_stmt *pData = 0; if( 0==sqlite3_stricmp(pTab->zName, "sqlite_sequence") ){ raw_printf(pState->out, "DELETE FROM sqlite_sequence;\n"); } shellPreparePrintf(pState->db, &rc, &pData, "SELECT max(field), group_concat(shell_escape_crnl(quote(value)),', ')" "FROM sqlite_dbdata WHERE pgno IN (" " SELECT pgno FROM recovery.map WHERE root=%d" ")" " AND field!=%d " "GROUP BY pgno, cell;", iRoot, pTab->iPk ); while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pData) ){ |
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6419 6420 6421 6422 6423 6424 6425 | shellFinalize(&rc, pLoop); /* The rest of the schema */ if( rc==SQLITE_OK ){ sqlite3_stmt *pStmt = 0; shellPrepare(pState->db, &rc, "SELECT sql, name FROM recovery.schema " | | | 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 | shellFinalize(&rc, pLoop); /* The rest of the schema */ if( rc==SQLITE_OK ){ sqlite3_stmt *pStmt = 0; shellPrepare(pState->db, &rc, "SELECT sql, name FROM recovery.schema " "WHERE sql NOT LIKE 'create table%'", &pStmt ); while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ const char *zSql = (const char*)sqlite3_column_text(pStmt, 0); if( sqlite3_strnicmp(zSql, "create virt", 11)==0 ){ const char *zName = (const char*)sqlite3_column_text(pStmt, 1); char *zPrint = shellMPrintf(&rc, "INSERT INTO sqlite_master VALUES('table', %Q, %Q, 0, %Q)", |
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