Since we're only using it on Linux now, just require poppler as a system dependency.

third_party/bson_c/src/bson.c

Index: third_party/bson_c/src/bson.c
diff --git a/third_party/bson_c/src/bson.c b/third_party/bson_c/src/bson.c
deleted file mode 100644
index 788bc2fefc32180a80c748db031cd827332c49e4..0000000000000000000000000000000000000000
--- a/third_party/bson_c/src/bson.c
+++ /dev/null
@@ -1,1063 +0,0 @@
-/* bson.c */
-
-/*    Copyright 2009, 2010 10gen Inc.
- *
- *    Licensed under the Apache License, Version 2.0 (the "License");
- *    you may not use this file except in compliance with the License.
- *    You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- *    Unless required by applicable law or agreed to in writing, software
- *    distributed under the License is distributed on an "AS IS" BASIS,
- *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *    See the License for the specific language governing permissions and
- *    limitations under the License.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <time.h>
-#include <limits.h>
-
-#include "bson.h"
-#include "encoding.h"
-
-const int initialBufferSize = 128;
-
-/* only need one of these */
-static const int zero = 0;
-
-/* Custom standard function pointers. */
-void *( *bson_malloc_func )( size_t ) = malloc;
-void *( *bson_realloc_func )( void *, size_t ) = realloc;
-void  ( *bson_free )( void * ) = free;
-#ifdef R_SAFETY_NET
-bson_printf_func bson_printf;
-#else
-bson_printf_func bson_printf = printf;
-#endif
-bson_fprintf_func bson_fprintf = fprintf;
-bson_sprintf_func bson_sprintf = sprintf;
-
-static int _bson_errprintf( const char *, ... );
-bson_printf_func bson_errprintf = _bson_errprintf;
-
-/* ObjectId fuzz functions. */
-static int ( *oid_fuzz_func )( void ) = NULL;
-static int ( *oid_inc_func )( void )  = NULL;
-
-/* ----------------------------
-   READING
-   ------------------------------ */
-
-MONGO_EXPORT bson* bson_create() {
-	return (bson*)bson_malloc(sizeof(bson));
-}
-
-MONGO_EXPORT void bson_dispose(bson* b) {
-	bson_free(b);
-}
-
-bson *bson_empty( bson *obj ) {
-    static char *data = "\005\0\0\0\0";
-    bson_init_data( obj, data );
-    obj->finished = 1;
-    obj->err = 0;
-    obj->stackPos = 0;
-    return obj;
-}
-
-MONGO_EXPORT int bson_copy( bson *out, const bson *in ) {
-    if ( !out ) return BSON_ERROR;
-    if ( !in->finished ) return BSON_ERROR;
-    bson_init_size( out, bson_size( in ) );
-    memcpy( out->data, in->data, bson_size( in ) );
-    out->finished = 1;
-
-    return BSON_OK;
-}
-
-int bson_init_data( bson *b, char *data ) {
-    b->data = data;
-    return BSON_OK;
-}
-
-int bson_init_finished_data( bson *b, char *data ) {
-    bson_init_data( b, data );
-    b->finished = 1;
-    return BSON_OK;
-}
-
-static void _bson_reset( bson *b ) {
-    b->finished = 0;
-    b->stackPos = 0;
-    b->err = 0;
-    b->errstr = NULL;
-}
-
-MONGO_EXPORT int bson_size( const bson *b ) {
-    int i;
-    if ( ! b || ! b->data )
-        return 0;
-    bson_little_endian32( &i, b->data );
-    return i;
-}
-
-MONGO_EXPORT int bson_buffer_size( const bson *b ) {
-    return (b->cur - b->data + 1);
-}
-
-
-const char *bson_data( bson *b ) {
-    return (const char *)b->data;
-}
-
-static char hexbyte( char hex ) {
-    switch ( hex ) {
-    case '0':
-        return 0x0;
-    case '1':
-        return 0x1;
-    case '2':
-        return 0x2;
-    case '3':
-        return 0x3;
-    case '4':
-        return 0x4;
-    case '5':
-        return 0x5;
-    case '6':
-        return 0x6;
-    case '7':
-        return 0x7;
-    case '8':
-        return 0x8;
-    case '9':
-        return 0x9;
-    case 'a':
-    case 'A':
-        return 0xa;
-    case 'b':
-    case 'B':
-        return 0xb;
-    case 'c':
-    case 'C':
-        return 0xc;
-    case 'd':
-    case 'D':
-        return 0xd;
-    case 'e':
-    case 'E':
-        return 0xe;
-    case 'f':
-    case 'F':
-        return 0xf;
-    default:
-        return 0x0; /* something smarter? */
-    }
-}
-
-MONGO_EXPORT void bson_oid_from_string( bson_oid_t *oid, const char *str ) {
-    int i;
-    for ( i=0; i<12; i++ ) {
-        oid->bytes[i] = ( hexbyte( str[2*i] ) << 4 ) | hexbyte( str[2*i + 1] );
-    }
-}
-
-MONGO_EXPORT void bson_oid_to_string( const bson_oid_t *oid, char *str ) {
-    static const char hex[16] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
-    int i;
-    for ( i=0; i<12; i++ ) {
-        str[2*i]     = hex[( oid->bytes[i] & 0xf0 ) >> 4];
-        str[2*i + 1] = hex[ oid->bytes[i] & 0x0f      ];
-    }
-    str[24] = '\0';
-}
-
-void bson_set_oid_fuzz( int ( *func )( void ) ) {
-    oid_fuzz_func = func;
-}
-
-void bson_set_oid_inc( int ( *func )( void ) ) {
-    oid_inc_func = func;
-}
-
-MONGO_EXPORT void bson_oid_gen( bson_oid_t *oid ) {
-    static int incr = 0;
-    static int fuzz = 0;
-    int i;
-    int t = time( NULL );
-
-    if( oid_inc_func )
-        i = oid_inc_func();
-    else
-        i = incr++;
-
-    if ( !fuzz ) {
-        if ( oid_fuzz_func )
-            fuzz = oid_fuzz_func();
-        else {
-            srand( t );
-            fuzz = rand();
-        }
-    }
-
-    bson_big_endian32( &oid->ints[0], &t );
-    oid->ints[1] = fuzz;
-    bson_big_endian32( &oid->ints[2], &i );
-}
-
-time_t bson_oid_generated_time( bson_oid_t *oid ) {
-    time_t out;
-    bson_big_endian32( &out, &oid->ints[0] );
-
-    return out;
-}
-
-void bson_print( bson *b ) {
-    bson_print_raw( b->data , 0 );
-}
-
-void bson_print_raw( const char *data , int depth ) {
-    bson_iterator i;
-    const char *key;
-    int temp;
-    bson_timestamp_t ts;
-    char oidhex[25];
-    bson scope;
-    bson_iterator_from_buffer( &i, data );
-
-    while ( bson_iterator_next( &i ) ) {
-        bson_type t = bson_iterator_type( &i );
-        if ( t == 0 )
-            break;
-        key = bson_iterator_key( &i );
-
-        for ( temp=0; temp<=depth; temp++ )
-            bson_printf( "\t" );
-        bson_printf( "%s : %d \t " , key , t );
-        switch ( t ) {
-        case BSON_DOUBLE:
-            bson_printf( "%f" , bson_iterator_double( &i ) );
-            break;
-        case BSON_STRING:
-            bson_printf( "%s" , bson_iterator_string( &i ) );
-            break;
-        case BSON_SYMBOL:
-            bson_printf( "SYMBOL: %s" , bson_iterator_string( &i ) );
-            break;
-        case BSON_OID:
-            bson_oid_to_string( bson_iterator_oid( &i ), oidhex );
-            bson_printf( "%s" , oidhex );
-            break;
-        case BSON_BOOL:
-            bson_printf( "%s" , bson_iterator_bool( &i ) ? "true" : "false" );
-            break;
-        case BSON_DATE:
-            bson_printf( "%ld" , ( long int )bson_iterator_date( &i ) );
-            break;
-        case BSON_BINDATA:
-            bson_printf( "BSON_BINDATA" );
-            break;
-        case BSON_UNDEFINED:
-            bson_printf( "BSON_UNDEFINED" );
-            break;
-        case BSON_NULL:
-            bson_printf( "BSON_NULL" );
-            break;
-        case BSON_REGEX:
-            bson_printf( "BSON_REGEX: %s", bson_iterator_regex( &i ) );
-            break;
-        case BSON_CODE:
-            bson_printf( "BSON_CODE: %s", bson_iterator_code( &i ) );
-            break;
-        case BSON_CODEWSCOPE:
-            bson_printf( "BSON_CODE_W_SCOPE: %s", bson_iterator_code( &i ) );
-            bson_init( &scope );
-            bson_iterator_code_scope( &i, &scope );
-            bson_printf( "\n\t SCOPE: " );
-            bson_print( &scope );
-            break;
-        case BSON_INT:
-            bson_printf( "%d" , bson_iterator_int( &i ) );
-            break;
-        case BSON_LONG:
-            bson_printf( "%lld" , ( uint64_t )bson_iterator_long( &i ) );
-            break;
-        case BSON_TIMESTAMP:
-            ts = bson_iterator_timestamp( &i );
-            bson_printf( "i: %d, t: %d", ts.i, ts.t );
-            break;
-        case BSON_OBJECT:
-        case BSON_ARRAY:
-            bson_printf( "\n" );
-            bson_print_raw( bson_iterator_value( &i ) , depth + 1 );
-            break;
-        default:
-            bson_errprintf( "can't print type : %d\n" , t );
-        }
-        bson_printf( "\n" );
-    }
-}
-
-/* ----------------------------
-   ITERATOR
-   ------------------------------ */
-
-MONGO_EXPORT bson_iterator* bson_iterator_create() {
-    return (bson_iterator*)malloc(sizeof(bson_iterator*));
-}
-
-MONGO_EXPORT void bson_iterator_dispose(bson_iterator* i) {
-    free(i);
-}
-
-MONGO_EXPORT void bson_iterator_init( bson_iterator *i, const bson *b ) {
-    i->cur = b->data + 4;
-    i->first = 1;
-}
-
-void bson_iterator_from_buffer( bson_iterator *i, const char *buffer ) {
-    i->cur = buffer + 4;
-    i->first = 1;
-}
-
-MONGO_EXPORT bson_type bson_find( bson_iterator *it, const bson *obj, const char *name ) {
-    bson_iterator_init( it, (bson *)obj );
-    while( bson_iterator_next( it ) ) {
-        if ( strcmp( name, bson_iterator_key( it ) ) == 0 )
-            break;
-    }
-    return bson_iterator_type( it );
-}
-
-bson_bool_t bson_iterator_more( const bson_iterator *i ) {
-    return *( i->cur );
-}
-
-MONGO_EXPORT bson_type bson_iterator_next( bson_iterator *i ) {
-    int ds;
-
-    if ( i->first ) {
-        i->first = 0;
-        return ( bson_type )( *i->cur );
-    }
-
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_EOO:
-        return BSON_EOO; /* don't advance */
-    case BSON_UNDEFINED:
-    case BSON_NULL:
-        ds = 0;
-        break;
-    case BSON_BOOL:
-        ds = 1;
-        break;
-    case BSON_INT:
-        ds = 4;
-        break;
-    case BSON_LONG:
-    case BSON_DOUBLE:
-    case BSON_TIMESTAMP:
-    case BSON_DATE:
-        ds = 8;
-        break;
-    case BSON_OID:
-        ds = 12;
-        break;
-    case BSON_STRING:
-    case BSON_SYMBOL:
-    case BSON_CODE:
-        ds = 4 + bson_iterator_int_raw( i );
-        break;
-    case BSON_BINDATA:
-        ds = 5 + bson_iterator_int_raw( i );
-        break;
-    case BSON_OBJECT:
-    case BSON_ARRAY:
-    case BSON_CODEWSCOPE:
-        ds = bson_iterator_int_raw( i );
-        break;
-    case BSON_DBREF:
-        ds = 4+12 + bson_iterator_int_raw( i );
-        break;
-    case BSON_REGEX: {
-        const char *s = bson_iterator_value( i );
-        const char *p = s;
-        p += strlen( p )+1;
-        p += strlen( p )+1;
-        ds = p-s;
-        break;
-    }
-
-    default: {
-        char msg[] = "unknown type: 000000000000";
-        bson_numstr( msg+14, ( unsigned )( i->cur[0] ) );
-        bson_fatal_msg( 0, msg );
-        return 0;
-    }
-    }
-
-    i->cur += 1 + strlen( i->cur + 1 ) + 1 + ds;
-
-    return ( bson_type )( *i->cur );
-}
-
-MONGO_EXPORT bson_type bson_iterator_type( const bson_iterator *i ) {
-    return ( bson_type )i->cur[0];
-}
-
-MONGO_EXPORT const char *bson_iterator_key( const bson_iterator *i ) {
-    return i->cur + 1;
-}
-
-const char *bson_iterator_value( const bson_iterator *i ) {
-    const char *t = i->cur + 1;
-    t += strlen( t ) + 1;
-    return t;
-}
-
-/* types */
-
-int bson_iterator_int_raw( const bson_iterator *i ) {
-    int out;
-    bson_little_endian32( &out, bson_iterator_value( i ) );
-    return out;
-}
-
-double bson_iterator_double_raw( const bson_iterator *i ) {
-    double out;
-    bson_little_endian64( &out, bson_iterator_value( i ) );
-    return out;
-}
-
-int64_t bson_iterator_long_raw( const bson_iterator *i ) {
-    int64_t out;
-    bson_little_endian64( &out, bson_iterator_value( i ) );
-    return out;
-}
-
-bson_bool_t bson_iterator_bool_raw( const bson_iterator *i ) {
-    return bson_iterator_value( i )[0];
-}
-
-MONGO_EXPORT bson_oid_t *bson_iterator_oid( const bson_iterator *i ) {
-    return ( bson_oid_t * )bson_iterator_value( i );
-}
-
-MONGO_EXPORT int bson_iterator_int( const bson_iterator *i ) {
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_INT:
-        return bson_iterator_int_raw( i );
-    case BSON_LONG:
-        return bson_iterator_long_raw( i );
-    case BSON_DOUBLE:
-        return bson_iterator_double_raw( i );
-    default:
-        return 0;
-    }
-}
-
-MONGO_EXPORT double bson_iterator_double( const bson_iterator *i ) {
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_INT:
-        return bson_iterator_int_raw( i );
-    case BSON_LONG:
-        return bson_iterator_long_raw( i );
-    case BSON_DOUBLE:
-        return bson_iterator_double_raw( i );
-    default:
-        return 0;
-    }
-}
-
-MONGO_EXPORT int64_t bson_iterator_long( const bson_iterator *i ) {
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_INT:
-        return bson_iterator_int_raw( i );
-    case BSON_LONG:
-        return bson_iterator_long_raw( i );
-    case BSON_DOUBLE:
-        return bson_iterator_double_raw( i );
-    default:
-        return 0;
-    }
-}
-
-bson_timestamp_t bson_iterator_timestamp( const bson_iterator *i ) {
-    bson_timestamp_t ts;
-    bson_little_endian32( &( ts.i ), bson_iterator_value( i ) );
-    bson_little_endian32( &( ts.t ), bson_iterator_value( i ) + 4 );
-    return ts;
-}
-
-
-MONGO_EXPORT int bson_iterator_timestamp_time( const bson_iterator *i ) {
-    int time;
-    bson_little_endian32( &time, bson_iterator_value( i ) + 4 );
-    return time;
-}
-
-
-MONGO_EXPORT int bson_iterator_timestamp_increment( const bson_iterator *i ) {
-    int increment;
-    bson_little_endian32( &increment, bson_iterator_value( i ) );
-    return increment;
-}
-
-
-MONGO_EXPORT bson_bool_t bson_iterator_bool( const bson_iterator *i ) {
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_BOOL:
-        return bson_iterator_bool_raw( i );
-    case BSON_INT:
-        return bson_iterator_int_raw( i ) != 0;
-    case BSON_LONG:
-        return bson_iterator_long_raw( i ) != 0;
-    case BSON_DOUBLE:
-        return bson_iterator_double_raw( i ) != 0;
-    case BSON_EOO:
-    case BSON_NULL:
-        return 0;
-    default:
-        return 1;
-    }
-}
-
-MONGO_EXPORT const char *bson_iterator_string( const bson_iterator *i ) {
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_STRING:
-    case BSON_SYMBOL:
-        return bson_iterator_value( i ) + 4;
-    default:
-        return "";
-    }
-}
-
-int bson_iterator_string_len( const bson_iterator *i ) {
-    return bson_iterator_int_raw( i );
-}
-
-MONGO_EXPORT const char *bson_iterator_code( const bson_iterator *i ) {
-    switch ( bson_iterator_type( i ) ) {
-    case BSON_STRING:
-    case BSON_CODE:
-        return bson_iterator_value( i ) + 4;
-    case BSON_CODEWSCOPE:
-        return bson_iterator_value( i ) + 8;
-    default:
-        return NULL;
-    }
-}
-
-MONGO_EXPORT void bson_iterator_code_scope( const bson_iterator *i, bson *scope ) {
-    if ( bson_iterator_type( i ) == BSON_CODEWSCOPE ) {
-        int code_len;
-        bson_little_endian32( &code_len, bson_iterator_value( i )+4 );
-        bson_init_data( scope, ( void * )( bson_iterator_value( i )+8+code_len ) );
-        _bson_reset( scope );
-        scope->finished = 1;
-    } else {
-        bson_empty( scope );
-    }
-}
-
-MONGO_EXPORT bson_date_t bson_iterator_date( const bson_iterator *i ) {
-    return bson_iterator_long_raw( i );
-}
-
-time_t bson_iterator_time_t( const bson_iterator *i ) {
-    return bson_iterator_date( i ) / 1000;
-}
-
-MONGO_EXPORT int bson_iterator_bin_len( const bson_iterator *i ) {
-    return ( bson_iterator_bin_type( i ) == BSON_BIN_BINARY_OLD )
-           ? bson_iterator_int_raw( i ) - 4
-           : bson_iterator_int_raw( i );
-}
-
-MONGO_EXPORT char bson_iterator_bin_type( const bson_iterator *i ) {
-    return bson_iterator_value( i )[4];
-}
-
-MONGO_EXPORT const char *bson_iterator_bin_data( const bson_iterator *i ) {
-    return ( bson_iterator_bin_type( i ) == BSON_BIN_BINARY_OLD )
-           ? bson_iterator_value( i ) + 9
-           : bson_iterator_value( i ) + 5;
-}
-
-MONGO_EXPORT const char *bson_iterator_regex( const bson_iterator *i ) {
-    return bson_iterator_value( i );
-}
-
-MONGO_EXPORT const char *bson_iterator_regex_opts( const bson_iterator *i ) {
-    const char *p = bson_iterator_value( i );
-    return p + strlen( p ) + 1;
-
-}
-
-void bson_iterator_subobject( const bson_iterator *i, bson *sub ) {
-    bson_init_data( sub, ( char * )bson_iterator_value( i ) );
-    _bson_reset( sub );
-    sub->finished = 1;
-}
-
-MONGO_EXPORT void bson_iterator_subiterator( const bson_iterator *i, bson_iterator *sub ) {
-    bson_iterator_from_buffer( sub, bson_iterator_value( i ) );
-}
-
-/* ----------------------------
-   BUILDING
-   ------------------------------ */
-
-static void _bson_init_size( bson *b, int size ) {
-    if( size == 0 )
-        b->data = NULL;
-    else
-        b->data = ( char * )bson_malloc( size );
-    b->dataSize = size;
-    b->cur = b->data + 4;
-    _bson_reset( b );
-}
-
-MONGO_EXPORT void bson_init( bson *b ) {
-    _bson_init_size( b, initialBufferSize );
-}
-
-void bson_init_size( bson *b, int size ) {
-    _bson_init_size( b, size );
-}
-
-void bson_append_byte( bson *b, char c ) {
-    b->cur[0] = c;
-    b->cur++;
-}
-
-void bson_append( bson *b, const void *data, int len ) {
-    memcpy( b->cur , data , len );
-    b->cur += len;
-}
-
-void bson_append32( bson *b, const void *data ) {
-    bson_little_endian32( b->cur, data );
-    b->cur += 4;
-}
-
-void bson_append64( bson *b, const void *data ) {
-    bson_little_endian64( b->cur, data );
-    b->cur += 8;
-}
-
-int bson_ensure_space( bson *b, const int bytesNeeded ) {
-    int pos = b->cur - b->data;
-    char *orig = b->data;
-    int new_size;
-
-    if ( pos + bytesNeeded <= b->dataSize )
-        return BSON_OK;
-
-    new_size = 1.5 * ( b->dataSize + bytesNeeded );
-
-    if( new_size < b->dataSize ) {
-        if( ( b->dataSize + bytesNeeded ) < INT_MAX )
-            new_size = INT_MAX;
-        else {
-            b->err = BSON_SIZE_OVERFLOW;
-            return BSON_ERROR;
-        }
-    }
-
-    b->data = bson_realloc( b->data, new_size );
-    if ( !b->data )
-        bson_fatal_msg( !!b->data, "realloc() failed" );
-
-    b->dataSize = new_size;
-    b->cur += b->data - orig;
-
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_finish( bson *b ) {
-    int i;
-
-    if( b->err & BSON_NOT_UTF8 )
-        return BSON_ERROR;
-
-    if ( ! b->finished ) {
-        if ( bson_ensure_space( b, 1 ) == BSON_ERROR ) return BSON_ERROR;
-        bson_append_byte( b, 0 );
-        i = b->cur - b->data;
-        bson_little_endian32( b->data, &i );
-        b->finished = 1;
-    }
-
-    return BSON_OK;
-}
-
-MONGO_EXPORT void bson_destroy( bson *b ) {
-    if (b) {
-        bson_free( b->data );
-        b->err = 0;
-        b->data = 0;
-        b->cur = 0;
-        b->finished = 1;
-    }
-}
-
-static int bson_append_estart( bson *b, int type, const char *name, const int dataSize ) {
-    const int len = strlen( name ) + 1;
-
-    if ( b->finished ) {
-        b->err |= BSON_ALREADY_FINISHED;
-        return BSON_ERROR;
-    }
-
-    if ( bson_ensure_space( b, 1 + len + dataSize ) == BSON_ERROR ) {
-        return BSON_ERROR;
-    }
-
-    if( bson_check_field_name( b, ( const char * )name, len - 1 ) == BSON_ERROR ) {
-        bson_builder_error( b );
-        return BSON_ERROR;
-    }
-
-    bson_append_byte( b, ( char )type );
-    bson_append( b, name, len );
-    return BSON_OK;
-}
-
-/* ----------------------------
-   BUILDING TYPES
-   ------------------------------ */
-
-MONGO_EXPORT int bson_append_int( bson *b, const char *name, const int i ) {
-    if ( bson_append_estart( b, BSON_INT, name, 4 ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append32( b , &i );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_long( bson *b, const char *name, const int64_t i ) {
-    if ( bson_append_estart( b , BSON_LONG, name, 8 ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append64( b , &i );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_double( bson *b, const char *name, const double d ) {
-    if ( bson_append_estart( b, BSON_DOUBLE, name, 8 ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append64( b , &d );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_bool( bson *b, const char *name, const bson_bool_t i ) {
-    if ( bson_append_estart( b, BSON_BOOL, name, 1 ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append_byte( b , i != 0 );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_null( bson *b, const char *name ) {
-    if ( bson_append_estart( b , BSON_NULL, name, 0 ) == BSON_ERROR )
-        return BSON_ERROR;
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_undefined( bson *b, const char *name ) {
-    if ( bson_append_estart( b, BSON_UNDEFINED, name, 0 ) == BSON_ERROR )
-        return BSON_ERROR;
-    return BSON_OK;
-}
-
-int bson_append_string_base( bson *b, const char *name,
-                             const char *value, int len, bson_type type ) {
-
-    int sl = len + 1;
-    if ( bson_check_string( b, ( const char * )value, sl - 1 ) == BSON_ERROR )
-        return BSON_ERROR;
-    if ( bson_append_estart( b, type, name, 4 + sl ) == BSON_ERROR ) {
-        return BSON_ERROR;
-    }
-    bson_append32( b , &sl );
-    bson_append( b , value , sl - 1 );
-    bson_append( b , "\0" , 1 );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_string( bson *b, const char *name, const char *value ) {
-    return bson_append_string_base( b, name, value, strlen ( value ), BSON_STRING );
-}
-
-MONGO_EXPORT int bson_append_symbol( bson *b, const char *name, const char *value ) {
-    return bson_append_string_base( b, name, value, strlen ( value ), BSON_SYMBOL );
-}
-
-MONGO_EXPORT int bson_append_code( bson *b, const char *name, const char *value ) {
-    return bson_append_string_base( b, name, value, strlen ( value ), BSON_CODE );
-}
-
-int bson_append_string_n( bson *b, const char *name, const char *value, int len ) {
-    return bson_append_string_base( b, name, value, len, BSON_STRING );
-}
-
-int bson_append_symbol_n( bson *b, const char *name, const char *value, int len ) {
-    return bson_append_string_base( b, name, value, len, BSON_SYMBOL );
-}
-
-int bson_append_code_n( bson *b, const char *name, const char *value, int len ) {
-    return bson_append_string_base( b, name, value, len, BSON_CODE );
-}
-
-int bson_append_code_w_scope_n( bson *b, const char *name,
-                                const char *code, int len, const bson *scope ) {
-
-    int sl = len + 1;
-    int size = 4 + 4 + sl + bson_size( scope );
-    if ( bson_append_estart( b, BSON_CODEWSCOPE, name, size ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append32( b, &size );
-    bson_append32( b, &sl );
-    bson_append( b, code, sl );
-    bson_append( b, scope->data, bson_size( scope ) );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_code_w_scope( bson *b, const char *name, const char *code, const bson *scope ) {
-    return bson_append_code_w_scope_n( b, name, code, strlen ( code ), scope );
-}
-
-MONGO_EXPORT int bson_append_binary( bson *b, const char *name, char type, const char *str, int len ) {
-    if ( type == BSON_BIN_BINARY_OLD ) {
-        int subtwolen = len + 4;
-        if ( bson_append_estart( b, BSON_BINDATA, name, 4+1+4+len ) == BSON_ERROR )
-            return BSON_ERROR;
-        bson_append32( b, &subtwolen );
-        bson_append_byte( b, type );
-        bson_append32( b, &len );
-        bson_append( b, str, len );
-    } else {
-        if ( bson_append_estart( b, BSON_BINDATA, name, 4+1+len ) == BSON_ERROR )
-            return BSON_ERROR;
-        bson_append32( b, &len );
-        bson_append_byte( b, type );
-        bson_append( b, str, len );
-    }
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_oid( bson *b, const char *name, const bson_oid_t *oid ) {
-    if ( bson_append_estart( b, BSON_OID, name, 12 ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append( b , oid , 12 );
-    return BSON_OK;
-}
-
-int bson_append_new_oid( bson *b, const char *name ) {
-    bson_oid_t oid;
-    bson_oid_gen( &oid );
-    return bson_append_oid( b, name, &oid );
-}
-
-MONGO_EXPORT int bson_append_regex( bson *b, const char *name, const char *pattern, const char *opts ) {
-    const int plen = strlen( pattern )+1;
-    const int olen = strlen( opts )+1;
-    if ( bson_append_estart( b, BSON_REGEX, name, plen + olen ) == BSON_ERROR )
-        return BSON_ERROR;
-    if ( bson_check_string( b, pattern, plen - 1 ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append( b , pattern , plen );
-    bson_append( b , opts , olen );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_bson( bson *b, const char *name, const bson *bson ) {
-    if ( bson_append_estart( b, BSON_OBJECT, name, bson_size( bson ) ) == BSON_ERROR )
-        return BSON_ERROR;
-    bson_append( b , bson->data , bson_size( bson ) );
-    return BSON_OK;
-}
-
-int bson_append_element( bson *b, const char *name_or_null, const bson_iterator *elem ) {
-    bson_iterator next = *elem;
-    int size;
-
-    bson_iterator_next( &next );
-    size = next.cur - elem->cur;
-
-    if ( name_or_null == NULL ) {
-        if( bson_ensure_space( b, size ) == BSON_ERROR )
-            return BSON_ERROR;
-        bson_append( b, elem->cur, size );
-    } else {
-        int data_size = size - 2 - strlen( bson_iterator_key( elem ) );
-        bson_append_estart( b, elem->cur[0], name_or_null, data_size );
-        bson_append( b, bson_iterator_value( elem ), data_size );
-    }
-
-    return BSON_OK;
-}
-
-int bson_append_timestamp( bson *b, const char *name, bson_timestamp_t *ts ) {
-    if ( bson_append_estart( b, BSON_TIMESTAMP, name, 8 ) == BSON_ERROR ) return BSON_ERROR;
-
-    bson_append32( b , &( ts->i ) );
-    bson_append32( b , &( ts->t ) );
-
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_timestamp2( bson *b, const char *name, int time, int increment ) {
-    if ( bson_append_estart( b, BSON_TIMESTAMP, name, 8 ) == BSON_ERROR ) return BSON_ERROR;
-
-    bson_append32( b , &increment );
-    bson_append32( b , &time );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_date( bson *b, const char *name, bson_date_t millis ) {
-    if ( bson_append_estart( b, BSON_DATE, name, 8 ) == BSON_ERROR ) return BSON_ERROR;
-    bson_append64( b , &millis );
-    return BSON_OK;
-}
-
-int bson_append_time_t( bson *b, const char *name, time_t secs ) {
-    return bson_append_date( b, name, ( bson_date_t )secs * 1000 );
-}
-
-MONGO_EXPORT int bson_append_start_object( bson *b, const char *name ) {
-    if ( bson_append_estart( b, BSON_OBJECT, name, 5 ) == BSON_ERROR ) return BSON_ERROR;
-    b->stack[ b->stackPos++ ] = b->cur - b->data;
-    bson_append32( b , &zero );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_start_array( bson *b, const char *name ) {
-    if ( bson_append_estart( b, BSON_ARRAY, name, 5 ) == BSON_ERROR ) return BSON_ERROR;
-    b->stack[ b->stackPos++ ] = b->cur - b->data;
-    bson_append32( b , &zero );
-    return BSON_OK;
-}
-
-MONGO_EXPORT int bson_append_finish_object( bson *b ) {
-    char *start;
-    int i;
-    if ( bson_ensure_space( b, 1 ) == BSON_ERROR ) return BSON_ERROR;
-    bson_append_byte( b , 0 );
-
-    start = b->data + b->stack[ --b->stackPos ];
-    i = b->cur - start;
-    bson_little_endian32( start, &i );
-
-    return BSON_OK;
-}
-
-MONGO_EXPORT double bson_int64_to_double( int64_t i64 ) {
-  return (double)i64;
-}
-
-int bson_append_finish_array( bson *b ) {
-    return bson_append_finish_object( b );
-}
-
-/* Error handling and allocators. */
-
-static bson_err_handler err_handler = NULL;
-
-MONGO_EXPORT bson_err_handler set_bson_err_handler( bson_err_handler func ) {
-    bson_err_handler old = err_handler;
-    err_handler = func;
-    return old;
-}
-
-void *bson_malloc( int size ) {
-    void *p;
-    p = bson_malloc_func( size );
-    bson_fatal_msg( !!p, "malloc() failed" );
-    return p;
-}
-
-void *bson_realloc( void *ptr, int size ) {
-    void *p;
-    p = bson_realloc_func( ptr, size );
-    bson_fatal_msg( !!p, "realloc() failed" );
-    return p;
-}
-
-int _bson_errprintf( const char *format, ... ) {
-    va_list ap;
-    int ret;
-    va_start( ap, format );
-#ifndef R_SAFETY_NET
-    ret = vfprintf( stderr, format, ap );
-#endif
-    va_end( ap );
-
-    return ret;
-}
-
-/**
- * This method is invoked when a non-fatal bson error is encountered.
- * Calls the error handler if available.
- *
- *  @param
- */
-void bson_builder_error( bson *b ) {
-    if( err_handler )
-        err_handler( "BSON error." );
-}
-
-void bson_fatal( int ok ) {
-    bson_fatal_msg( ok, "" );
-}
-
-void bson_fatal_msg( int ok , const char *msg ) {
-    if ( ok )
-        return;
-
-    if ( err_handler ) {
-        err_handler( msg );
-    }
-#ifndef R_SAFETY_NET
-    bson_errprintf( "error: %s\n" , msg );
-    exit( -5 );
-#endif
-}
-
-
-/* Efficiently copy an integer to a string. */
-extern const char bson_numstrs[1000][4];
-
-void bson_numstr( char *str, int i ) {
-    if( i < 1000 )
-        memcpy( str, bson_numstrs[i], 4 );
-    else
-        bson_sprintf( str,"%d", i );
-}
-
-MONGO_EXPORT void bson_swap_endian64( void *outp, const void *inp ) {
-    const char *in = ( const char * )inp;
-    char *out = ( char * )outp;
-
-    out[0] = in[7];
-    out[1] = in[6];
-    out[2] = in[5];
-    out[3] = in[4];
-    out[4] = in[3];
-    out[5] = in[2];
-    out[6] = in[1];
-    out[7] = in[0];
-
-}
-
-MONGO_EXPORT void bson_swap_endian32( void *outp, const void *inp ) {
-    const char *in = ( const char * )inp;
-    char *out = ( char * )outp;
-
-    out[0] = in[3];
-    out[1] = in[2];
-    out[2] = in[1];
-    out[3] = in[0];
-}