Adding upstream version 0.11.2.upstream/0.11.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 1178 insertions, 0 deletions

diff --git a/src/third-party/sqlite/ext/dbdump.c b/src/third-party/sqlite/ext/dbdump.c
new file mode 100644
index 0000000..9d0764d
--- /dev/null
+++ b/src/third-party/sqlite/ext/dbdump.c
@@ -0,0 +1,730 @@
+/*
+** 2016-03-13
+**
+** 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 a C-language subroutine that converts the content
+** of an SQLite database into UTF-8 text SQL statements that can be used
+** to exactly recreate the original database.  ROWID values are preserved.
+**
+** A prototype of the implemented subroutine is this:
+**
+**   int sqlite3_db_dump(
+**          sqlite3 *db,
+**          const char *zSchema,
+**          const char *zTable,
+**          void (*xCallback)(void*, const char*),
+**          void *pArg
+**   );
+**
+** The db parameter is the database connection.  zSchema is the schema within
+** that database which is to be dumped.  Usually the zSchema is "main" but
+** can also be "temp" or any ATTACH-ed database.  If zTable is not NULL, then
+** only the content of that one table is dumped.  If zTable is NULL, then all
+** tables are dumped.
+**
+** The generate text is passed to xCallback() in multiple calls.  The second
+** argument to xCallback() is a copy of the pArg parameter.  The first
+** argument is some of the output text that this routine generates.  The
+** signature to xCallback() is designed to make it compatible with fputs().
+**
+** The sqlite3_db_dump() subroutine returns SQLITE_OK on success or some error
+** code if it encounters a problem.
+**
+** If this file is compiled with -DDBDUMP_STANDALONE then a "main()" routine
+** is included so that this routine becomes a command-line utility.  The
+** command-line utility takes two or three arguments which are the name
+** of the database file, the schema, and optionally the table, forming the
+** first three arguments of a single call to the library routine.
+*/
+#include "sqlite3.h"
+#include <stdarg.h>
+#include <string.h>
+#include <ctype.h>
+
+/*
+** The state of the dump process.
+*/
+typedef struct DState DState;
+struct DState {
+  sqlite3 *db;                /* The database connection */
+  int nErr;                   /* Number of errors seen so far */
+  int rc;                     /* Error code */
+  int writableSchema;                    /* True if in writable_schema mode */
+  int (*xCallback)(const char*,void*);   /* Send output here */
+  void *pArg;                            /* Argument to xCallback() */
+};
+
+/*
+** A variable length string to which one can append text.
+*/
+typedef struct DText DText;
+struct DText {
+  char *z;           /* The text */
+  int n;             /* Number of bytes of content in z[] */
+  int nAlloc;        /* Number of bytes allocated to z[] */
+};
+
+/*
+** Initialize and destroy a DText object
+*/
+static void initText(DText *p){
+  memset(p, 0, sizeof(*p));
+}
+static void freeText(DText *p){
+  sqlite3_free(p->z);
+  initText(p);
+}
+
+/* zIn is either a pointer to a NULL-terminated string in memory obtained
+** from malloc(), or a NULL pointer. The string pointed to by zAppend is
+** added to zIn, and the result returned in memory obtained from malloc().
+** zIn, if it was not NULL, is freed.
+**
+** If the third argument, quote, is not '\0', then it is used as a
+** quote character for zAppend.
+*/
+static void appendText(DText *p, char const *zAppend, char quote){
+  int len;
+  int i;
+  int nAppend = (int)(strlen(zAppend) & 0x3fffffff);
+
+  len = nAppend+p->n+1;
+  if( quote ){
+    len += 2;
+    for(i=0; i<nAppend; i++){
+      if( zAppend[i]==quote ) len++;
+    }
+  }
+
+  if( p->n+len>=p->nAlloc ){
+    char *zNew;
+    p->nAlloc = p->nAlloc*2 + len + 20;
+    zNew = sqlite3_realloc(p->z, p->nAlloc);
+    if( zNew==0 ){
+      freeText(p);
+      return;
+    }
+    p->z = zNew;
+  }
+
+  if( quote ){
+    char *zCsr = p->z+p->n;
+    *zCsr++ = quote;
+    for(i=0; i<nAppend; i++){
+      *zCsr++ = zAppend[i];
+      if( zAppend[i]==quote ) *zCsr++ = quote;
+    }
+    *zCsr++ = quote;
+    p->n = (int)(zCsr - p->z);
+    *zCsr = '\0';
+  }else{
+    memcpy(p->z+p->n, zAppend, nAppend);
+    p->n += nAppend;
+    p->z[p->n] = '\0';
+  }
+}
+
+/*
+** Attempt to determine if identifier zName needs to be quoted, either
+** because it contains non-alphanumeric characters, or because it is an
+** SQLite keyword.  Be conservative in this estimate:  When in doubt assume
+** that quoting is required.
+**
+** Return '"' if quoting is required.  Return 0 if no quoting is required.
+*/
+static char quoteChar(const char *zName){
+  int i;
+  if( !isalpha((unsigned char)zName[0]) && zName[0]!='_' ) return '"';
+  for(i=0; zName[i]; i++){
+    if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ) return '"';
+  }
+#if 0
+  return sqlite3_keyword_check(zName, i) ? '"' : 0;
+#else
+  return 0;
+#endif
+}
+
+
+/*
+** Release memory previously allocated by tableColumnList().
+*/
+static void freeColumnList(char **azCol){
+  int i;
+  for(i=1; azCol[i]; i++){
+    sqlite3_free(azCol[i]);
+  }
+  /* azCol[0] is a static string */
+  sqlite3_free(azCol);
+}
+
+/*
+** Return a list of pointers to strings which are the names of all
+** columns in table zTab.   The memory to hold the names is dynamically
+** allocated and must be released by the caller using a subsequent call
+** to freeColumnList().
+**
+** The azCol[0] entry is usually NULL.  However, if zTab contains a rowid
+** value that needs to be preserved, then azCol[0] is filled in with the
+** name of the rowid column.
+**
+** The first regular column in the table is azCol[1].  The list is terminated
+** by an entry with azCol[i]==0.
+*/
+static char **tableColumnList(DState *p, const char *zTab){
+  char **azCol = 0;
+  sqlite3_stmt *pStmt = 0;
+  char *zSql;
+  int nCol = 0;
+  int nAlloc = 0;
+  int nPK = 0;       /* Number of PRIMARY KEY columns seen */
+  int isIPK = 0;     /* True if one PRIMARY KEY column of type INTEGER */
+  int preserveRowid = 1;
+  int rc;
+
+  zSql = sqlite3_mprintf("PRAGMA table_info=%Q", zTab);
+  if( zSql==0 ) return 0;
+  rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
+  sqlite3_free(zSql);
+  if( rc ) return 0;
+  while( sqlite3_step(pStmt)==SQLITE_ROW ){
+    if( nCol>=nAlloc-2 ){
+      char **azNew;
+      nAlloc = nAlloc*2 + nCol + 10;
+      azNew = sqlite3_realloc64(azCol, nAlloc*sizeof(azCol[0]));
+      if( azNew==0 ) goto col_oom;
+      azCol = azNew;
+      azCol[0] = 0;
+    }
+    azCol[++nCol] = sqlite3_mprintf("%s", sqlite3_column_text(pStmt, 1));
+    if( azCol[nCol]==0 ) goto col_oom;
+    if( sqlite3_column_int(pStmt, 5) ){
+      nPK++;
+      if( nPK==1
+       && sqlite3_stricmp((const char*)sqlite3_column_text(pStmt,2),
+                          "INTEGER")==0 
+      ){
+        isIPK = 1;
+      }else{
+        isIPK = 0;
+      }
+    }
+  }
+  sqlite3_finalize(pStmt);
+  pStmt = 0;
+  azCol[nCol+1] = 0;
+
+  /* The decision of whether or not a rowid really needs to be preserved
+  ** is tricky.  We never need to preserve a rowid for a WITHOUT ROWID table
+  ** or a table with an INTEGER PRIMARY KEY.  We are unable to preserve
+  ** rowids on tables where the rowid is inaccessible because there are other
+  ** columns in the table named "rowid", "_rowid_", and "oid".
+  */
+  if( isIPK ){
+    /* If a single PRIMARY KEY column with type INTEGER was seen, then it
+    ** might be an alise for the ROWID.  But it might also be a WITHOUT ROWID
+    ** table or a INTEGER PRIMARY KEY DESC column, neither of which are
+    ** ROWID aliases.  To distinguish these cases, check to see if
+    ** there is a "pk" entry in "PRAGMA index_list".  There will be
+    ** no "pk" index if the PRIMARY KEY really is an alias for the ROWID.
+    */
+    zSql = sqlite3_mprintf("SELECT 1 FROM pragma_index_list(%Q)"
+                           " WHERE origin='pk'", zTab);
+    if( zSql==0 ) goto col_oom;
+    rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
+    sqlite3_free(zSql);
+    if( rc ){
+      freeColumnList(azCol);
+      return 0;
+    }
+    rc = sqlite3_step(pStmt);
+    sqlite3_finalize(pStmt);
+    pStmt = 0;
+    preserveRowid = rc==SQLITE_ROW;
+  }
+  if( preserveRowid ){
+    /* Only preserve the rowid if we can find a name to use for the
+    ** rowid */
+    static char *azRowid[] = { "rowid", "_rowid_", "oid" };
+    int i, j;
+    for(j=0; j<3; j++){
+      for(i=1; i<=nCol; i++){
+        if( sqlite3_stricmp(azRowid[j],azCol[i])==0 ) break;
+      }
+      if( i>nCol ){
+        /* At this point, we know that azRowid[j] is not the name of any
+        ** ordinary column in the table.  Verify that azRowid[j] is a valid
+        ** name for the rowid before adding it to azCol[0].  WITHOUT ROWID
+        ** tables will fail this last check */
+        rc = sqlite3_table_column_metadata(p->db,0,zTab,azRowid[j],0,0,0,0,0);
+        if( rc==SQLITE_OK ) azCol[0] = azRowid[j];
+        break;
+      }
+    }
+  }
+  return azCol;
+
+col_oom:
+  sqlite3_finalize(pStmt);
+  freeColumnList(azCol);
+  p->nErr++;
+  p->rc = SQLITE_NOMEM;
+  return 0;
+}
+
+/*
+** Send mprintf-formatted content to the output callback.
+*/
+static void output_formatted(DState *p, const char *zFormat, ...){
+  va_list ap;
+  char *z;
+  va_start(ap, zFormat);
+  z = sqlite3_vmprintf(zFormat, ap);
+  va_end(ap);
+  p->xCallback(z, p->pArg);
+  sqlite3_free(z);
+}
+
+/*
+** Find a string that is not found anywhere in z[].  Return a pointer
+** to that string.
+**
+** Try to use zA and zB first.  If both of those are already found in z[]
+** then make up some string and store it in the buffer zBuf.
+*/
+static const char *unused_string(
+  const char *z,                    /* Result must not appear anywhere in z */
+  const char *zA, const char *zB,   /* Try these first */
+  char *zBuf                        /* Space to store a generated string */
+){
+  unsigned i = 0;
+  if( strstr(z, zA)==0 ) return zA;
+  if( strstr(z, zB)==0 ) return zB;
+  do{
+    sqlite3_snprintf(20,zBuf,"(%s%u)", zA, i++);
+  }while( strstr(z,zBuf)!=0 );
+  return zBuf;
+}
+
+/*
+** Output the given string as a quoted string using SQL quoting conventions.
+** Additionallly , escape the "\n" and "\r" characters so that they do not
+** get corrupted by end-of-line translation facilities in some operating
+** systems.
+*/
+static void output_quoted_escaped_string(DState *p, const char *z){
+  int i;
+  char c;
+  for(i=0; (c = z[i])!=0 && c!='\'' && c!='\n' && c!='\r'; i++){}
+  if( c==0 ){
+    output_formatted(p,"'%s'",z);
+  }else{
+    const char *zNL = 0;
+    const char *zCR = 0;
+    int nNL = 0;
+    int nCR = 0;
+    char zBuf1[20], zBuf2[20];
+    for(i=0; z[i]; i++){
+      if( z[i]=='\n' ) nNL++;
+      if( z[i]=='\r' ) nCR++;
+    }
+    if( nNL ){
+      p->xCallback("replace(", p->pArg);
+      zNL = unused_string(z, "\\n", "\\012", zBuf1);
+    }
+    if( nCR ){
+      p->xCallback("replace(", p->pArg);
+      zCR = unused_string(z, "\\r", "\\015", zBuf2);
+    }
+    p->xCallback("'", p->pArg);
+    while( *z ){
+      for(i=0; (c = z[i])!=0 && c!='\n' && c!='\r' && c!='\''; i++){}
+      if( c=='\'' ) i++;
+      if( i ){
+        output_formatted(p, "%.*s", i, z);
+        z += i;
+      }
+      if( c=='\'' ){
+        p->xCallback("'", p->pArg);
+        continue;
+      }
+      if( c==0 ){
+        break;
+      }
+      z++;
+      if( c=='\n' ){
+        p->xCallback(zNL, p->pArg);
+        continue;
+      }
+      p->xCallback(zCR, p->pArg);
+    }
+    p->xCallback("'", p->pArg);
+    if( nCR ){
+      output_formatted(p, ",'%s',char(13))", zCR);
+    }
+    if( nNL ){
+      output_formatted(p, ",'%s',char(10))", zNL);
+    }
+  }
+}
+
+/*
+** This is an sqlite3_exec callback routine used for dumping the database.
+** Each row received by this callback consists of a table name,
+** the table type ("index" or "table") and SQL to create the table.
+** This routine should print text sufficient to recreate the table.
+*/
+static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){
+  int rc;
+  const char *zTable;
+  const char *zType;
+  const char *zSql;
+  DState *p = (DState*)pArg;
+  sqlite3_stmt *pStmt;
+
+  (void)azCol;
+  if( nArg!=3 ) return 1;
+  zTable = azArg[0];
+  zType = azArg[1];
+  zSql = azArg[2];
+
+  if( strcmp(zTable, "sqlite_sequence")==0 ){
+    p->xCallback("DELETE FROM sqlite_sequence;\n", p->pArg);
+  }else if( sqlite3_strglob("sqlite_stat?", zTable)==0 ){
+    p->xCallback("ANALYZE sqlite_schema;\n", p->pArg);
+  }else if( strncmp(zTable, "sqlite_", 7)==0 ){
+    return 0;
+  }else if( strncmp(zSql, "CREATE VIRTUAL TABLE", 20)==0 ){
+#if 0
+    if( !p->writableSchema ){
+      p->xCallback("PRAGMA writable_schema=ON;\n", p->pArg);
+      p->writableSchema = 1;
+    }
+    output_formatted(p,
+       "INSERT INTO sqlite_schema(type,name,tbl_name,rootpage,sql)"
+       "VALUES('table','%q','%q',0,'%q');",
+       zTable, zTable, zSql);
+    return 0;
+#endif
+  }else{
+    if( sqlite3_strglob("CREATE TABLE ['\"]*", zSql)==0 ){
+      p->xCallback("CREATE TABLE IF NOT EXISTS ", p->pArg);
+      p->xCallback(zSql+13, p->pArg);
+    }else{
+      p->xCallback(zSql, p->pArg);
+    }
+    p->xCallback(";\n", p->pArg);
+  }
+
+  if( strcmp(zType, "table")==0 ){
+    DText sSelect;
+    DText sTable;
+    char **azTCol;
+    int i;
+    int nCol;
+
+    azTCol = tableColumnList(p, zTable);
+    if( azTCol==0 ) return 0;
+
+    initText(&sTable);
+    appendText(&sTable, "INSERT INTO ", 0);
+
+    /* Always quote the table name, even if it appears to be pure ascii,
+    ** in case it is a keyword. Ex:  INSERT INTO "table" ... */
+    appendText(&sTable, zTable, quoteChar(zTable));
+
+    /* If preserving the rowid, add a column list after the table name.
+    ** In other words:  "INSERT INTO tab(rowid,a,b,c,...) VALUES(...)"
+    ** instead of the usual "INSERT INTO tab VALUES(...)".
+    */
+    if( azTCol[0] ){
+      appendText(&sTable, "(", 0);
+      appendText(&sTable, azTCol[0], 0);
+      for(i=1; azTCol[i]; i++){
+        appendText(&sTable, ",", 0);
+        appendText(&sTable, azTCol[i], quoteChar(azTCol[i]));
+      }
+      appendText(&sTable, ")", 0);
+    }
+    appendText(&sTable, " VALUES(", 0);
+
+    /* Build an appropriate SELECT statement */
+    initText(&sSelect);
+    appendText(&sSelect, "SELECT ", 0);
+    if( azTCol[0] ){
+      appendText(&sSelect, azTCol[0], 0);
+      appendText(&sSelect, ",", 0);
+    }
+    for(i=1; azTCol[i]; i++){
+      appendText(&sSelect, azTCol[i], quoteChar(azTCol[i]));
+      if( azTCol[i+1] ){
+        appendText(&sSelect, ",", 0);
+      }
+    }
+    nCol = i;
+    if( azTCol[0]==0 ) nCol--;
+    freeColumnList(azTCol);
+    appendText(&sSelect, " FROM ", 0);
+    appendText(&sSelect, zTable, quoteChar(zTable));
+
+    rc = sqlite3_prepare_v2(p->db, sSelect.z, -1, &pStmt, 0);
+    if( rc!=SQLITE_OK ){
+      p->nErr++;
+      if( p->rc==SQLITE_OK ) p->rc = rc;
+    }else{
+      while( SQLITE_ROW==sqlite3_step(pStmt) ){
+        p->xCallback(sTable.z, p->pArg);
+        for(i=0; i<nCol; i++){
+          if( i ) p->xCallback(",", p->pArg);
+          switch( sqlite3_column_type(pStmt,i) ){
+            case SQLITE_INTEGER: {
+              output_formatted(p, "%lld", sqlite3_column_int64(pStmt,i));
+              break;
+            }
+            case SQLITE_FLOAT: {
+              double r = sqlite3_column_double(pStmt,i);
+              sqlite3_uint64 ur;
+              memcpy(&ur,&r,sizeof(r));
+              if( ur==0x7ff0000000000000LL ){
+                p->xCallback("1e999", p->pArg);
+              }else if( ur==0xfff0000000000000LL ){
+                p->xCallback("-1e999", p->pArg);
+              }else{
+                output_formatted(p, "%!.20g", r);
+              }
+              break;
+            }
+            case SQLITE_NULL: {
+              p->xCallback("NULL", p->pArg);
+              break;
+            }
+            case SQLITE_TEXT: {
+              output_quoted_escaped_string(p, 
+                   (const char*)sqlite3_column_text(pStmt,i));
+              break;
+            }
+            case SQLITE_BLOB: {
+              int nByte = sqlite3_column_bytes(pStmt,i);
+              unsigned char *a = (unsigned char*)sqlite3_column_blob(pStmt,i);
+              int j;
+              p->xCallback("x'", p->pArg);
+              for(j=0; j<nByte; j++){
+                char zWord[3];
+                zWord[0] = "0123456789abcdef"[(a[j]>>4)&15];
+                zWord[1] = "0123456789abcdef"[a[j]&15];
+                zWord[2] = 0;
+                p->xCallback(zWord, p->pArg);
+              }
+              p->xCallback("'", p->pArg);
+              break;
+            }
+          }
+        }
+        p->xCallback(");\n", p->pArg);
+      }
+    }
+    sqlite3_finalize(pStmt);
+    freeText(&sTable);
+    freeText(&sSelect);
+  }
+  return 0;
+}
+
+
+/*
+** Execute a query statement that will generate SQL output.  Print
+** the result columns, comma-separated, on a line and then add a
+** semicolon terminator to the end of that line.
+**
+** If the number of columns is 1 and that column contains text "--"
+** then write the semicolon on a separate line.  That way, if a
+** "--" comment occurs at the end of the statement, the comment
+** won't consume the semicolon terminator.
+*/
+static void output_sql_from_query(
+  DState *p,               /* Query context */
+  const char *zSelect,     /* SELECT statement to extract content */
+  ...
+){
+  sqlite3_stmt *pSelect;
+  int rc;
+  int nResult;
+  int i;
+  const char *z;
+  char *zSql;
+  va_list ap;
+  va_start(ap, zSelect);
+  zSql = sqlite3_vmprintf(zSelect, ap);
+  va_end(ap);
+  if( zSql==0 ){
+    p->rc = SQLITE_NOMEM;
+    p->nErr++;
+    return;
+  }
+  rc = sqlite3_prepare_v2(p->db, zSql, -1, &pSelect, 0);
+  sqlite3_free(zSql);
+  if( rc!=SQLITE_OK || !pSelect ){
+    output_formatted(p, "/**** ERROR: (%d) %s *****/\n", rc,
+                sqlite3_errmsg(p->db));
+    p->nErr++;
+    return;
+  }
+  rc = sqlite3_step(pSelect);
+  nResult = sqlite3_column_count(pSelect);
+  while( rc==SQLITE_ROW ){
+    z = (const char*)sqlite3_column_text(pSelect, 0);
+    p->xCallback(z, p->pArg);
+    for(i=1; i<nResult; i++){
+      p->xCallback(",", p->pArg);
+      p->xCallback((const char*)sqlite3_column_text(pSelect,i), p->pArg);
+    }
+    if( z==0 ) z = "";
+    while( z[0] && (z[0]!='-' || z[1]!='-') ) z++;
+    if( z[0] ){
+      p->xCallback("\n;\n", p->pArg);
+    }else{
+      p->xCallback(";\n", p->pArg);
+    }
+    rc = sqlite3_step(pSelect);
+  }
+  rc = sqlite3_finalize(pSelect);
+  if( rc!=SQLITE_OK ){
+    output_formatted(p, "/**** ERROR: (%d) %s *****/\n", rc,
+                     sqlite3_errmsg(p->db));
+    if( (rc&0xff)!=SQLITE_CORRUPT ) p->nErr++;
+  }
+}
+
+/*
+** Run zQuery.  Use dump_callback() as the callback routine so that
+** the contents of the query are output as SQL statements.
+**
+** If we get a SQLITE_CORRUPT error, rerun the query after appending
+** "ORDER BY rowid DESC" to the end.
+*/
+static void run_schema_dump_query(
+  DState *p,
+  const char *zQuery,
+  ...
+){
+  char *zErr = 0;
+  char *z;
+  va_list ap;
+  va_start(ap, zQuery);
+  z = sqlite3_vmprintf(zQuery, ap);
+  va_end(ap); 
+  sqlite3_exec(p->db, z, dump_callback, p, &zErr);
+  sqlite3_free(z);
+  if( zErr ){
+    output_formatted(p, "/****** %s ******/\n", zErr);
+    sqlite3_free(zErr);
+    p->nErr++;
+    zErr = 0;
+  }
+}
+
+/*
+** Convert an SQLite database into SQL statements that will recreate that
+** database.
+*/
+int sqlite3_db_dump(
+  sqlite3 *db,               /* The database connection */
+  const char *zSchema,       /* Which schema to dump.  Usually "main". */
+  const char *zTable,        /* Which table to dump.  NULL means everything. */
+  int (*xCallback)(const char*,void*),   /* Output sent to this callback */
+  void *pArg                             /* Second argument of the callback */
+){
+  DState x;
+  memset(&x, 0, sizeof(x));
+  x.rc = sqlite3_exec(db, "BEGIN", 0, 0, 0);
+  if( x.rc ) return x.rc;
+  x.db = db;
+  x.xCallback = xCallback;
+  x.pArg = pArg;
+  xCallback("PRAGMA foreign_keys=OFF;\nBEGIN TRANSACTION;\n", pArg);
+  if( zTable==0 ){
+    run_schema_dump_query(&x,
+      "SELECT name, type, sql FROM \"%w\".sqlite_schema "
+      "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'",
+      zSchema
+    );
+    run_schema_dump_query(&x,
+      "SELECT name, type, sql FROM \"%w\".sqlite_schema "
+      "WHERE name=='sqlite_sequence'", zSchema
+    );
+    output_sql_from_query(&x,
+      "SELECT sql FROM sqlite_schema "
+      "WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0
+    );
+  }else{
+    run_schema_dump_query(&x,
+      "SELECT name, type, sql FROM \"%w\".sqlite_schema "
+      "WHERE tbl_name=%Q COLLATE nocase AND type=='table'"
+      "  AND sql NOT NULL",
+      zSchema, zTable
+    );
+    output_sql_from_query(&x,
+      "SELECT sql FROM \"%w\".sqlite_schema "
+      "WHERE sql NOT NULL"
+      "  AND type IN ('index','trigger','view')"
+      "  AND tbl_name=%Q COLLATE nocase",
+      zSchema, zTable
+    ); 
+  }
+  if( x.writableSchema ){
+    xCallback("PRAGMA writable_schema=OFF;\n", pArg);
+  }
+  xCallback(x.nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n", pArg);
+  sqlite3_exec(db, "COMMIT", 0, 0, 0);
+  return x.rc;
+}
+
+
+
+/* The generic subroutine is above.  The code the follows implements
+** the command-line interface.
+*/
+#ifdef DBDUMP_STANDALONE
+#include <stdio.h>
+
+/*
+** Command-line interface
+*/
+int main(int argc, char **argv){
+  sqlite3 *db;
+  const char *zDb;
+  const char *zSchema;
+  const char *zTable = 0;
+  int rc;
+
+  if( argc<2 || argc>4 ){
+    fprintf(stderr, "Usage: %s DATABASE ?SCHEMA? ?TABLE?\n", argv[0]);
+    return 1;
+  }
+  zDb = argv[1];
+  zSchema = argc>=3 ? argv[2] : "main";
+  zTable = argc==4 ? argv[3] : 0;
+
+  rc = sqlite3_open(zDb, &db);
+  if( rc ){
+    fprintf(stderr, "Cannot open \"%s\": %s\n", zDb, sqlite3_errmsg(db));
+    sqlite3_close(db);
+    return 1;
+  }
+  rc = sqlite3_db_dump(db, zSchema, zTable, 
+          (int(*)(const char*,void*))fputs, (void*)stdout);
+  if( rc ){
+    fprintf(stderr, "Error: sqlite3_db_dump() returns %d\n", rc);
+  }
+  sqlite3_close(db);
+  return rc!=SQLITE_OK;  
+}
+#endif /* DBDUMP_STANDALONE */
diff --git a/src/third-party/sqlite/ext/series.c b/src/third-party/sqlite/ext/series.c
new file mode 100644
index 0000000..4b34f84
--- /dev/null
+++ b/src/third-party/sqlite/ext/series.c
@@ -0,0 +1,448 @@
+/*
+** 2015-08-18
+**
+** 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 demonstrates how to create a table-valued-function using
+** a virtual table.  This demo implements the generate_series() function
+** which gives similar results to the eponymous function in PostgreSQL.
+** Examples:
+**
+**      SELECT * FROM generate_series(0,100,5);
+**
+** The query above returns integers from 0 through 100 counting by steps
+** of 5.
+**
+**      SELECT * FROM generate_series(0,100);
+**
+** Integers from 0 through 100 with a step size of 1.
+**
+**      SELECT * FROM generate_series(20) LIMIT 10;
+**
+** Integers 20 through 29.
+**
+** HOW IT WORKS
+**
+** The generate_series "function" is really a virtual table with the
+** following schema:
+**
+**     CREATE TABLE generate_series(
+**       value,
+**       start HIDDEN,
+**       stop HIDDEN,
+**       step HIDDEN
+**     );
+**
+** Function arguments in queries against this virtual table are translated
+** into equality constraints against successive hidden columns.  In other
+** words, the following pairs of queries are equivalent to each other:
+**
+**    SELECT * FROM generate_series(0,100,5);
+**    SELECT * FROM generate_series WHERE start=0 AND stop=100 AND step=5;
+**
+**    SELECT * FROM generate_series(0,100);
+**    SELECT * FROM generate_series WHERE start=0 AND stop=100;
+**
+**    SELECT * FROM generate_series(20) LIMIT 10;
+**    SELECT * FROM generate_series WHERE start=20 LIMIT 10;
+**
+** The generate_series virtual table implementation leaves the xCreate method
+** set to NULL.  This means that it is not possible to do a CREATE VIRTUAL
+** TABLE command with "generate_series" as the USING argument.  Instead, there
+** is a single generate_series virtual table that is always available without
+** having to be created first.
+**
+** The xBestIndex method looks for equality constraints against the hidden
+** start, stop, and step columns, and if present, it uses those constraints
+** to bound the sequence of generated values.  If the equality constraints
+** are missing, it uses 0 for start, 4294967295 for stop, and 1 for step.
+** xBestIndex returns a small cost when both start and stop are available,
+** and a very large cost if either start or stop are unavailable.  This
+** encourages the query planner to order joins such that the bounds of the
+** series are well-defined.
+*/
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT1
+#include <assert.h>
+#include <string.h>
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+
+
+/* series_cursor is a subclass of sqlite3_vtab_cursor which will
+** serve as the underlying representation of a cursor that scans
+** over rows of the result
+*/
+typedef struct series_cursor series_cursor;
+struct series_cursor {
+  sqlite3_vtab_cursor base;  /* Base class - must be first */
+  int isDesc;                /* True to count down rather than up */
+  sqlite3_int64 iRowid;      /* The rowid */
+  sqlite3_int64 iValue;      /* Current value ("value") */
+  sqlite3_int64 mnValue;     /* Mimimum value ("start") */
+  sqlite3_int64 mxValue;     /* Maximum value ("stop") */
+  sqlite3_int64 iStep;       /* Increment ("step") */
+};
+
+/*
+** The seriesConnect() method is invoked to create a new
+** series_vtab that describes the generate_series virtual table.
+**
+** Think of this routine as the constructor for series_vtab objects.
+**
+** All this routine needs to do is:
+**
+**    (1) Allocate the series_vtab object and initialize all fields.
+**
+**    (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the
+**        result set of queries against generate_series will look like.
+*/
+static int seriesConnect(
+  sqlite3 *db,
+  void *pUnused,
+  int argcUnused, const char *const*argvUnused,
+  sqlite3_vtab **ppVtab,
+  char **pzErrUnused
+){
+  sqlite3_vtab *pNew;
+  int rc;
+
+/* Column numbers */
+#define SERIES_COLUMN_VALUE 0
+#define SERIES_COLUMN_START 1
+#define SERIES_COLUMN_STOP  2
+#define SERIES_COLUMN_STEP  3
+
+  (void)pUnused;
+  (void)argcUnused;
+  (void)argvUnused;
+  (void)pzErrUnused;
+  rc = sqlite3_declare_vtab(db,
+     "CREATE TABLE x(value,start hidden,stop hidden,step hidden)");
+  if( rc==SQLITE_OK ){
+    pNew = *ppVtab = sqlite3_malloc( sizeof(*pNew) );
+    if( pNew==0 ) return SQLITE_NOMEM;
+    memset(pNew, 0, sizeof(*pNew));
+#ifdef SQLITE_VTAB_INNOCUOUS
+    sqlite3_vtab_config(db, SQLITE_VTAB_INNOCUOUS);
+#endif
+  }
+  return rc;
+}
+
+/*
+** This method is the destructor for series_cursor objects.
+*/
+static int seriesDisconnect(sqlite3_vtab *pVtab){
+  sqlite3_free(pVtab);
+  return SQLITE_OK;
+}
+
+/*
+** Constructor for a new series_cursor object.
+*/
+static int seriesOpen(sqlite3_vtab *pUnused, sqlite3_vtab_cursor **ppCursor){
+  series_cursor *pCur;
+  (void)pUnused;
+  pCur = sqlite3_malloc( sizeof(*pCur) );
+  if( pCur==0 ) return SQLITE_NOMEM;
+  memset(pCur, 0, sizeof(*pCur));
+  *ppCursor = &pCur->base;
+  return SQLITE_OK;
+}
+
+/*
+** Destructor for a series_cursor.
+*/
+static int seriesClose(sqlite3_vtab_cursor *cur){
+  sqlite3_free(cur);
+  return SQLITE_OK;
+}
+
+
+/*
+** Advance a series_cursor to its next row of output.
+*/
+static int seriesNext(sqlite3_vtab_cursor *cur){
+  series_cursor *pCur = (series_cursor*)cur;
+  if( pCur->isDesc ){
+    pCur->iValue -= pCur->iStep;
+  }else{
+    pCur->iValue += pCur->iStep;
+  }
+  pCur->iRowid++;
+  return SQLITE_OK;
+}
+
+/*
+** Return values of columns for the row at which the series_cursor
+** is currently pointing.
+*/
+static int seriesColumn(
+  sqlite3_vtab_cursor *cur,   /* The cursor */
+  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
+  int i                       /* Which column to return */
+){
+  series_cursor *pCur = (series_cursor*)cur;
+  sqlite3_int64 x = 0;
+  switch( i ){
+    case SERIES_COLUMN_START:  x = pCur->mnValue; break;
+    case SERIES_COLUMN_STOP:   x = pCur->mxValue; break;
+    case SERIES_COLUMN_STEP:   x = pCur->iStep;   break;
+    default:                   x = pCur->iValue;  break;
+  }
+  sqlite3_result_int64(ctx, x);
+  return SQLITE_OK;
+}
+
+/*
+** Return the rowid for the current row. In this implementation, the
+** first row returned is assigned rowid value 1, and each subsequent
+** row a value 1 more than that of the previous.
+*/
+static int seriesRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
+  series_cursor *pCur = (series_cursor*)cur;
+  *pRowid = pCur->iRowid;
+  return SQLITE_OK;
+}
+
+/*
+** Return TRUE if the cursor has been moved off of the last
+** row of output.
+*/
+static int seriesEof(sqlite3_vtab_cursor *cur){
+  series_cursor *pCur = (series_cursor*)cur;
+  if( pCur->isDesc ){
+    return pCur->iValue < pCur->mnValue;
+  }else{
+    return pCur->iValue > pCur->mxValue;
+  }
+}
+
+/* True to cause run-time checking of the start=, stop=, and/or step= 
+** parameters.  The only reason to do this is for testing the
+** constraint checking logic for virtual tables in the SQLite core.
+*/
+#ifndef SQLITE_SERIES_CONSTRAINT_VERIFY
+# define SQLITE_SERIES_CONSTRAINT_VERIFY 0
+#endif
+
+/*
+** This method is called to "rewind" the series_cursor object back
+** to the first row of output.  This method is always called at least
+** once prior to any call to seriesColumn() or seriesRowid() or 
+** seriesEof().
+**
+** The query plan selected by seriesBestIndex is passed in the idxNum
+** parameter.  (idxStr is not used in this implementation.)  idxNum
+** is a bitmask showing which constraints are available:
+**
+**    1:    start=VALUE
+**    2:    stop=VALUE
+**    4:    step=VALUE
+**
+** Also, if bit 8 is set, that means that the series should be output
+** in descending order rather than in ascending order.  If bit 16 is
+** set, then output must appear in ascending order.
+**
+** This routine should initialize the cursor and position it so that it
+** is pointing at the first row, or pointing off the end of the table
+** (so that seriesEof() will return true) if the table is empty.
+*/
+static int seriesFilter(
+  sqlite3_vtab_cursor *pVtabCursor, 
+  int idxNum, const char *idxStrUnused,
+  int argc, sqlite3_value **argv
+){
+  series_cursor *pCur = (series_cursor *)pVtabCursor;
+  int i = 0;
+  (void)idxStrUnused;
+  if( idxNum & 1 ){
+    pCur->mnValue = sqlite3_value_int64(argv[i++]);
+  }else{
+    pCur->mnValue = 0;
+  }
+  if( idxNum & 2 ){
+    pCur->mxValue = sqlite3_value_int64(argv[i++]);
+  }else{
+    pCur->mxValue = 0xffffffff;
+  }
+  if( idxNum & 4 ){
+    pCur->iStep = sqlite3_value_int64(argv[i++]);
+    if( pCur->iStep==0 ){
+      pCur->iStep = 1;
+    }else if( pCur->iStep<0 ){
+      pCur->iStep = -pCur->iStep;
+      if( (idxNum & 16)==0 ) idxNum |= 8;
+    }
+  }else{
+    pCur->iStep = 1;
+  }
+  for(i=0; i<argc; i++){
+    if( sqlite3_value_type(argv[i])==SQLITE_NULL ){
+      /* If any of the constraints have a NULL value, then return no rows.
+      ** See ticket https://www.sqlite.org/src/info/fac496b61722daf2 */
+      pCur->mnValue = 1;
+      pCur->mxValue = 0;
+      break;
+    }
+  }
+  if( idxNum & 8 ){
+    pCur->isDesc = 1;
+    pCur->iValue = pCur->mxValue;
+    if( pCur->iStep>0 ){
+      pCur->iValue -= (pCur->mxValue - pCur->mnValue)%pCur->iStep;
+    }
+  }else{
+    pCur->isDesc = 0;
+    pCur->iValue = pCur->mnValue;
+  }
+  pCur->iRowid = 1;
+  return SQLITE_OK;
+}
+
+/*
+** SQLite will invoke this method one or more times while planning a query
+** that uses the generate_series virtual table.  This routine needs to create
+** a query plan for each invocation and compute an estimated cost for that
+** plan.
+**
+** In this implementation idxNum is used to represent the
+** query plan.  idxStr is unused.
+**
+** The query plan is represented by bits in idxNum:
+**
+**  (1)  start = $value  -- constraint exists
+**  (2)  stop = $value   -- constraint exists
+**  (4)  step = $value   -- constraint exists
+**  (8)  output in descending order
+*/
+static int seriesBestIndex(
+  sqlite3_vtab *vtab,
+  sqlite3_index_info *pIdxInfo
+){
+  int i, j;              /* Loop over constraints */
+  int idxNum = 0;        /* The query plan bitmask */
+  int unusableMask = 0;  /* Mask of unusable constraints */
+  int nArg = 0;          /* Number of arguments that seriesFilter() expects */
+  int aIdx[3];           /* Constraints on start, stop, and step */
+  const struct sqlite3_index_constraint *pConstraint;
+
+  /* This implementation assumes that the start, stop, and step columns
+  ** are the last three columns in the virtual table. */
+  assert( SERIES_COLUMN_STOP == SERIES_COLUMN_START+1 );
+  assert( SERIES_COLUMN_STEP == SERIES_COLUMN_START+2 );
+  aIdx[0] = aIdx[1] = aIdx[2] = -1;
+  pConstraint = pIdxInfo->aConstraint;
+  for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){
+    int iCol;    /* 0 for start, 1 for stop, 2 for step */
+    int iMask;   /* bitmask for those column */
+    if( pConstraint->iColumn<SERIES_COLUMN_START ) continue;
+    iCol = pConstraint->iColumn - SERIES_COLUMN_START;
+    assert( iCol>=0 && iCol<=2 );
+    iMask = 1 << iCol;
+    if( pConstraint->usable==0 ){
+      unusableMask |=  iMask;
+      continue;
+    }else if( pConstraint->op==SQLITE_INDEX_CONSTRAINT_EQ ){
+      idxNum |= iMask;
+      aIdx[iCol] = i;
+    }
+  }
+  for(i=0; i<3; i++){
+    if( (j = aIdx[i])>=0 ){
+      pIdxInfo->aConstraintUsage[j].argvIndex = ++nArg;
+      pIdxInfo->aConstraintUsage[j].omit = !SQLITE_SERIES_CONSTRAINT_VERIFY;
+    }
+  }
+  if( (unusableMask & ~idxNum)!=0 ){
+    /* The start, stop, and step columns are inputs.  Therefore if there
+    ** are unusable constraints on any of start, stop, or step then
+    ** this plan is unusable */
+    return SQLITE_CONSTRAINT;
+  }
+  if( (idxNum & 3)==3 ){
+    /* Both start= and stop= boundaries are available.  This is the 
+    ** the preferred case */
+    pIdxInfo->estimatedCost = (double)(2 - ((idxNum&4)!=0));
+    pIdxInfo->estimatedRows = 1000;
+    if( pIdxInfo->nOrderBy==1 ){
+      if( pIdxInfo->aOrderBy[0].desc ){
+        idxNum |= 8;
+      }else{
+        idxNum |= 16;
+      }
+      pIdxInfo->orderByConsumed = 1;
+    }
+  }else{
+      if (!(idxNum & 1)) {
+          vtab->zErrMsg = sqlite3_mprintf("the start parameter is required");
+      } else {
+          vtab->zErrMsg = sqlite3_mprintf("the stop parameter is required");
+      }
+    return SQLITE_ERROR;
+  }
+  pIdxInfo->idxNum = idxNum;
+  return SQLITE_OK;
+}
+
+/*
+** This following structure defines all the methods for the 
+** generate_series virtual table.
+*/
+static sqlite3_module seriesModule = {
+  0,                         /* iVersion */
+  0,                         /* xCreate */
+  seriesConnect,             /* xConnect */
+  seriesBestIndex,           /* xBestIndex */
+  seriesDisconnect,          /* xDisconnect */
+  0,                         /* xDestroy */
+  seriesOpen,                /* xOpen - open a cursor */
+  seriesClose,               /* xClose - close a cursor */
+  seriesFilter,              /* xFilter - configure scan constraints */
+  seriesNext,                /* xNext - advance a cursor */
+  seriesEof,                 /* xEof - check for end of scan */
+  seriesColumn,              /* xColumn - read data */
+  seriesRowid,               /* xRowid - read data */
+  0,                         /* xUpdate */
+  0,                         /* xBegin */
+  0,                         /* xSync */
+  0,                         /* xCommit */
+  0,                         /* xRollback */
+  0,                         /* xFindMethod */
+  0,                         /* xRename */
+  0,                         /* xSavepoint */
+  0,                         /* xRelease */
+  0,                         /* xRollbackTo */
+  0                          /* xShadowName */
+};
+
+#endif /* SQLITE_OMIT_VIRTUALTABLE */
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_series_init(
+  sqlite3 *db, 
+  char **pzErrMsg, 
+  const sqlite3_api_routines *pApi
+){
+  int rc = SQLITE_OK;
+  SQLITE_EXTENSION_INIT2(pApi);
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+  if( sqlite3_libversion_number()<3008012 ){
+    *pzErrMsg = sqlite3_mprintf(
+        "generate_series() requires SQLite 3.8.12 or later");
+    return SQLITE_ERROR;
+  }
+  rc = sqlite3_create_module(db, "generate_series", &seriesModule, 0);
+#endif
+  return rc;
+}