/ Check-in [fb1048cb]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Add the readfile(FILENAME) and writefile(FILENAME,CONTENT) SQL functions to the command-line shell.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: fb1048cb2b613a0dbfe625a5df05e9dcd736a433
User & Date: drh 2014-07-24 12:39:59
Context
2014-07-24
22:41
Fix a bug in the whereRangeSkipScanEst() procedure (added by check-in [d09ca6d5efad3e4cfa]) where it fails to consider the possibility of a ROWID column when computing the affinity of a table column. check-in: 6aea2258 user: drh tags: trunk
22:13
Merge updates from trunk. check-in: 8dc0cdf6 user: mistachkin tags: asciiMode
16:54
Merge all recent trunk changes into the threads branch. check-in: 77068589 user: drh tags: threads
16:43
Merge recent trunk changes into the apple-osx branch. check-in: 3810dc62 user: drh tags: apple-osx
16:23
Merge recent trunk changes into the sessions branch. check-in: a9db017e user: drh tags: sessions
12:39
Add the readfile(FILENAME) and writefile(FILENAME,CONTENT) SQL functions to the command-line shell. check-in: fb1048cb user: drh tags: trunk
12:19
Add support for hexadecimal integer literals in the parser. check-in: f8f79f28 user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Show Whitespace Changes Patch

Changes to src/shell.c.

1646
1647
1648
1649
1650
1651
1652































































1653
1654
1655
1656
1657
1658
1659
....
1669
1670
1671
1672
1673
1674
1675




1676
1677
1678
1679
1680
1681
1682
  ".vfsname ?AUX?         Print the name of the VFS stack\n"
  ".width NUM1 NUM2 ...   Set column widths for \"column\" mode\n"
  "                         Negative values right-justify\n"
;

/* Forward reference */
static int process_input(struct callback_data *p, FILE *in);
































































/*
** Make sure the database is open.  If it is not, then open it.  If
** the database fails to open, print an error message and exit.
*/
static void open_db(struct callback_data *p, int keepAlive){
  if( p->db==0 ){
................................................................................
          p->zDbFilename, sqlite3_errmsg(db));
      if( keepAlive ) return;
      exit(1);
    }
#ifndef SQLITE_OMIT_LOAD_EXTENSION
    sqlite3_enable_load_extension(p->db, 1);
#endif




  }
}

/*
** Do C-language style dequoting.
**
**    \t    -> tab







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







 







>
>
>
>







1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
....
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
  ".vfsname ?AUX?         Print the name of the VFS stack\n"
  ".width NUM1 NUM2 ...   Set column widths for \"column\" mode\n"
  "                         Negative values right-justify\n"
;

/* Forward reference */
static int process_input(struct callback_data *p, FILE *in);
/*
** Implementation of the "readfile(X)" SQL function.  The entire content
** of the file named X is read and returned as a BLOB.  NULL is returned
** if the file does not exist or is unreadable.
*/
static void readfileFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zName;
  FILE *in;
  long nIn;
  void *pBuf;

  zName = (const char*)sqlite3_value_text(argv[0]);
  if( zName==0 ) return;
  in = fopen(zName, "rb");
  if( in==0 ) return;
  fseek(in, 0, SEEK_END);
  nIn = ftell(in);
  rewind(in);
  pBuf = sqlite3_malloc( nIn );
  if( pBuf && 1==fread(pBuf, nIn, 1, in) ){
    sqlite3_result_blob(context, pBuf, nIn, sqlite3_free);
  }else{
    sqlite3_free(pBuf);
  }
  fclose(in);
}

/*
** Implementation of the "writefile(X,Y)" SQL function.  The argument Y
** is written into file X.  The number of bytes written is returned.  Or
** NULL is returned if something goes wrong, such as being unable to open
** file X for writing.
*/
static void writefileFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  FILE *out;
  const char *z;
  int n;
  sqlite3_int64 rc;
  const char *zFile;

  zFile = (const char*)sqlite3_value_text(argv[0]);
  if( zFile==0 ) return;
  out = fopen(zFile, "wb");
  if( out==0 ) return;
  z = (const char*)sqlite3_value_blob(argv[1]);
  if( z==0 ){
    n = 0;
    rc = 0;
  }else{
    n = sqlite3_value_bytes(argv[1]);
    rc = fwrite(z, 1, n, out);
  }
  fclose(out);
  sqlite3_result_int64(context, rc);
}

/*
** Make sure the database is open.  If it is not, then open it.  If
** the database fails to open, print an error message and exit.
*/
static void open_db(struct callback_data *p, int keepAlive){
  if( p->db==0 ){
................................................................................
          p->zDbFilename, sqlite3_errmsg(db));
      if( keepAlive ) return;
      exit(1);
    }
#ifndef SQLITE_OMIT_LOAD_EXTENSION
    sqlite3_enable_load_extension(p->db, 1);
#endif
    sqlite3_create_function(db, "readfile", 1, SQLITE_UTF8, 0,
                            readfileFunc, 0, 0);
    sqlite3_create_function(db, "writefile", 2, SQLITE_UTF8, 0,
                            writefileFunc, 0, 0);
  }
}

/*
** Do C-language style dequoting.
**
**    \t    -> tab