예제 #1
0
IV
PerlIOMmap_unmap(pTHX_ PerlIO *f)
{
    PerlIOMmap * const m = PerlIOSelf(f, PerlIOMmap);
    IV code = 0;
    if (m->len) {
	PerlIOBuf * const b = &m->base;
	if (b->buf) {
	    /* The munmap address argument is tricky: depending on the
	     * standard it is either "void *" or "caddr_t" (which is
	     * usually "char *" (signed or unsigned).  If we cast it
	     * to "void *", those that have it caddr_t and an uptight
	     * C++ compiler, will freak out.  But casting it as char*
	     * should work.  Maybe.  (Using Mmap_t figured out by
	     * Configure doesn't always work, apparently.) */
	    code = munmap((char*)m->mptr, m->len);
	    b->buf = NULL;
	    m->len = 0;
	    m->mptr = NULL;
	    if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0)
		code = -1;
	}
	b->ptr = b->end = b->buf;
	PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
    }
    return code;
}
예제 #2
0
int
#ifdef USE_SFIO
PerlIO_getpos(PerlIO *f, Off_t *pos)
{
 *pos = PerlIO_seek(f,0,0);
 return 0;
}
예제 #3
0
void
_wavpack_skip(wvpinfo *wvp, uint32_t size)
{
  if ( buffer_len(wvp->buf) >= size ) {
    //buffer_dump(mp4->buf, size);
    buffer_consume(wvp->buf, size);
    
    DEBUG_TRACE("  skipped buffer data size %d\n", size);
  }
  else {
    PerlIO_seek(wvp->infile, size - buffer_len(wvp->buf), SEEK_CUR);
    buffer_clear(wvp->buf);
    
    DEBUG_TRACE("  seeked past %d bytes to %d\n", size, (int)PerlIO_tell(wvp->infile));
  }
}
예제 #4
0
파일: csv_select.c 프로젝트: gitpan/DBE
int csv_select_run_child(
	csv_parse_t *parse, csv_result_set_t *result, size_t table_pos
) {
	csv_select_t *select = parse->select;
	csv_table_def_t *table, *table2;
	char *s1, *s2;
	int ch, has_child = select->table_count - table_pos > 1;
	size_t i, j, k, l, m, rp = 0, nr = 0, l1;
	Expr *x1;
	ExprList *xl_cols = select->columns;
	csv_row_t *row;
	csv_var_t *v1, v2;
	csv_column_def_t *col;
	csv_t *csv = parse->csv;
	/* reset table */
	table = select->tables[table_pos];
	PerlIO_seek( table->dstream, table->header_offset, SEEK_SET );
	if( table->flags & TEXT_TABLE_COLNAMEHEADER ) {
		if( ! table->header_offset ) {
			do {
				ch = PerlIO_getc( table->dstream );
			} while( ch != EOF && ch != '\n' );
			table->header_offset = PerlIO_tell( table->dstream );
		}
	}
	table->row_pos = 0;
	/* read rows */
	while( (s1 = csv_read_row( table )) != NULL ) {
#ifdef CSV_DEBUG
		_debug( "table '%s' row %lu\n", table->name, table->row_pos );
#endif
		if( has_child ) {
			ch = csv_select_run_child( parse, result, table_pos + 1 );
			if( ch != CSV_OK )
				return ch;
			continue;
		}
		/* eval WHERE */
		if( (x1 = select->where) != NULL ) {
			ch = expr_eval( parse, x1 );
			if( ch != CSV_OK )
				return ch;
			if( x1->var.flags & VAR_HAS_IV ) {
				if( ! x1->var.iv )
					continue;
			}
			else if( x1->var.flags & VAR_HAS_NV ) {
				if( ! x1->var.nv )
					continue;
			}
			else if( x1->var.sv == NULL || x1->var.sv[0] == '0' )
				continue;
		}
		/* eval columns */
		for( i = 0; i < xl_cols->expr_count; i ++ ) {
			x1 = xl_cols->expr[i];
			if( (x1->flags & EXPR_IS_AGGR) == 0 ) {
				ch = expr_eval( parse, x1 );
				if( ch != CSV_OK )
					return ch;
			}
		}
		if( select->groupby == NULL )
			goto add_row;
		/* eval groupby */
		for( i = 0; i < select->groupby->expr_count; i ++ ) {
			ch = expr_eval( parse, select->groupby->expr[i] );
			if( ch != CSV_OK )
				return ch;
		}
		/* search groupby row */
		for( j = 0; j < result->row_count; j ++ ) {
			row = result->rows[j];
			for( i = 0; i < select->groupby->expr_count; i ++ ) {
				v1 = &row->groupby[i];
				x1 = select->groupby->expr[i];
				VAR_COMP_OP( v2, *v1, x1->var, ==, "==", 0, 0 );
				if( ! v2.iv )
					goto groupby_next;
			}
			goto eval_row;
groupby_next:
			continue;
		}
add_row:
		if( select->offset && rp < select->offset ) {
			rp ++;
			continue;
		}
		if( select->limit && rp - select->offset >= select->limit )
			goto finish;
		rp ++;
		Newxz( row, 1, csv_row_t );
		row->select = select;
		if( (result->row_count % ROW_COUNT_EXPAND) == 0 ) {
			Renew( result->rows, result->row_count + ROW_COUNT_EXPAND,
				csv_row_t * );
		}
		result->rows[result->row_count ++] = row;
		Newxz( row->data, result->column_count, csv_var_t );
		if( select->orderby != NULL )
			Newxz( row->orderby, select->orderby->expr_count, csv_var_t );
		if( select->groupby != NULL )
			Newxz( row->groupby, select->groupby->expr_count, csv_var_t );
		nr = 1;
eval_row:
		for( i = 0, j = 0; i < xl_cols->expr_count; i ++, j ++ ) {
			x1 = xl_cols->expr[i];
			if( x1->op == TK_TABLE ) {
				table2 = x1->table;
				for( l = 0; l < table2->column_count; l ++, j ++ ) {
					col = table2->columns + l;
					v1 = row->data + j;
					s1 = table->data + col->offset;
					l1 = col->length;
					if( l1 == 4 && strcmp( s1, "NULL" ) == 0 )
						continue;
					switch( col->type ) {
					case FIELD_TYPE_INTEGER:
						v1->iv = atoi( s1 );
						v1->flags = VAR_HAS_IV;
						break;
					case FIELD_TYPE_DOUBLE:
						if( table2->decimal_symbol != '.' ) {
							s2 = strchr( s1, table2->decimal_symbol );
							if( s2 != NULL )
								*s2 = '.';
						}
						v1->nv = atof( s1 );
						v1->flags = VAR_HAS_NV;
						break;
					case FIELD_TYPE_CHAR:
						v1->sv_len = charset_convert(
							s1, l1, table2->charset,
							csv->client_charset, &v1->sv
						);
						v1->flags = VAR_HAS_SV;
						break;
					case FIELD_TYPE_BLOB:
						if( l1 >= 2 && s1[0] == '0' && s1[1] == 'x' ) {
							l1 = (l1 - 2) / 2;
							if( ! l1 ) {
								v1->flags = 0;
								continue;
							}
							Renew( v1->sv, l1 + 1, char );
							for( m = 0, s1 += 2; m < l1; m ++ ) {
								ch = CHAR_FROM_HEX[*s1 & 0x7f] << 4;
								s1 ++;
								ch += CHAR_FROM_HEX[*s1 & 0x7f];
								s1 ++;
								v1->sv[m] = (char) ch;
							}
							v1->sv[l1] = '\0';
							v1->sv_len = l1;
							v1->flags = VAR_HAS_SV;
							break;
						}
					default:
						Renew( v1->sv, l1 + 1, char );
						Copy( s1, v1->sv, l1, char );
						v1->sv[l1] = '\0';
						v1->sv_len = l1;
						v1->flags = VAR_HAS_SV;
						break;
					}
				}
				continue;
			}
예제 #5
0
int
image_gif_load(image *im)
{
  int x, y, ofs;
  GifRecordType RecordType;
  GifPixelType *line = NULL;
  int ExtFunction = 0;
  GifByteType *ExtData;
  SavedImage *sp;
  SavedImage temp_save;
  int BackGround = 0;
  int trans_index = 0; // transparent index if any
  ColorMapObject *ColorMap;
  GifColorType *ColorMapEntry;

  temp_save.ExtensionBlocks = NULL;
  temp_save.ExtensionBlockCount = 0;

  // If reusing the object a second time, start over
  if (im->used) {
    DEBUG_TRACE("Recreating giflib objects\n");
    image_gif_finish(im);

    if (im->fh != NULL) {
      // reset file to begining of image
      PerlIO_seek(im->fh, im->image_offset, SEEK_SET);
    }
    else {
      // reset SV read
      im->sv_offset = im->image_offset;
    }

    buffer_clear(im->buf);

    image_gif_read_header(im);
  }

  do {
    if (DGifGetRecordType(im->gif, &RecordType) == GIF_ERROR) {
      warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
      image_gif_finish(im);
      return 0;
    }

    switch (RecordType) {
      case IMAGE_DESC_RECORD_TYPE:
        if (DGifGetImageDesc(im->gif) == GIF_ERROR) {
          warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
          image_gif_finish(im);
          return 0;
        }

        sp = &im->gif->SavedImages[im->gif->ImageCount - 1];

        im->width  = sp->ImageDesc.Width;
        im->height = sp->ImageDesc.Height;

        BackGround = im->gif->SBackGroundColor; // XXX needed?
        ColorMap = im->gif->Image.ColorMap ? im->gif->Image.ColorMap : im->gif->SColorMap;

        if (ColorMap == NULL) {
          warn("Image::Scale GIF image has no colormap (%s)\n", SvPVX(im->path));
          image_gif_finish(im);
          return 0;
        }

        // Allocate storage for decompressed image
        image_alloc(im, im->width, im->height);

        New(0, line, im->width, GifPixelType);

        if (im->gif->Image.Interlace) {
          int i;
          for (i = 0; i < 4; i++) {
            for (x = InterlacedOffset[i]; x < im->height; x += InterlacedJumps[i]) {
              ofs = x * im->width;
              if (DGifGetLine(im->gif, line, 0) != GIF_OK) {
                warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
                image_gif_finish(im);
                return 0;
              }

              for (y = 0; y < im->width; y++) {
                ColorMapEntry = &ColorMap->Colors[line[y]];
                im->pixbuf[ofs++] = COL_FULL(
                  ColorMapEntry->Red,
                  ColorMapEntry->Green,
                  ColorMapEntry->Blue,
                  trans_index == line[y] ? 0 : 255
                );
              }
            }
          }
        }
        else {
          ofs = 0;
          for (x = 0; x < im->height; x++) {
            if (DGifGetLine(im->gif, line, 0) != GIF_OK) {
              warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
              image_gif_finish(im);
              return 0;
            }

            for (y = 0; y < im->width; y++) {
              ColorMapEntry = &ColorMap->Colors[line[y]];
              im->pixbuf[ofs++] = COL_FULL(
                ColorMapEntry->Red,
                ColorMapEntry->Green,
                ColorMapEntry->Blue,
                trans_index == line[y] ? 0 : 255
              );
            }
          }
        }

        Safefree(line);
        break;

      case EXTENSION_RECORD_TYPE:
        if (DGifGetExtension(im->gif, &ExtFunction, &ExtData) == GIF_ERROR) {
          warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
          image_gif_finish(im);
          return 0;
        }

        if (ExtFunction == 0xF9) { // transparency info
          if (ExtData[1] & 1)
            trans_index = ExtData[4];
          else
            trans_index = -1;
          im->has_alpha = 1;
          DEBUG_TRACE("GIF transparency index: %d\n", trans_index);
        }

        while (ExtData != NULL) {
          /* Create an extension block with our data */
#ifdef GIFLIB_API_50
          if (GifAddExtensionBlock(&im->gif->ExtensionBlockCount, &im->gif->ExtensionBlocks, ExtFunction, ExtData[0], &ExtData[1]) == GIF_ERROR) {
#else
          temp_save.Function = ExtFunction;
          if (AddExtensionBlock(&temp_save, ExtData[0], &ExtData[1]) == GIF_ERROR) {
#endif
#ifdef GIFLIB_API_41
            PrintGifError();
#endif
            warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
            image_gif_finish(im);
            return 0;
          }

          if (DGifGetExtensionNext(im->gif, &ExtData) == GIF_ERROR) {
#ifdef GIFLIB_API_41
            PrintGifError();
#endif
            warn("Image::Scale unable to read GIF file (%s)\n", SvPVX(im->path));
            image_gif_finish(im);
            return 0;
          }

          ExtFunction = 0; // CONTINUE_EXT_FUNC_CODE
        }
        break;

      case TERMINATE_RECORD_TYPE:
      default:
        break;
    }
  } while (RecordType != TERMINATE_RECORD_TYPE);

  return 1;
}

void
image_gif_finish(image *im)
{
  if (im->gif != NULL) {
#ifdef GIFLIB_API_51
    if (DGifCloseFile(im->gif, NULL) != GIF_OK) {
#else
    if (DGifCloseFile(im->gif) != GIF_OK) {
#endif
#ifdef GIFLIB_API_41
      PrintGifError();
#endif
      warn("Image::Scale unable to close GIF file (%s)\n", SvPVX(im->path));
    }
    im->gif = NULL;

    DEBUG_TRACE("image_gif_finish\n");
  }
}
예제 #6
0
PerlIO_setpos(PerlIO *f, const Fpos_t *pos)
#endif
{
 return PerlIO_seek(f,*pos,0); 
}
예제 #7
0
파일: image.c 프로젝트: chorny/Image-Scale
int
image_init(HV *self, image *im)
{
  unsigned char *bptr;
  char *file = NULL;
  int ret = 1;
  
  if (my_hv_exists(self, "file")) {
    // Input from file
    SV *path = *(my_hv_fetch(self, "file"));
    file = SvPVX(path);
    im->fh = IoIFP(sv_2io(*(my_hv_fetch(self, "_fh"))));
    im->path = newSVsv(path);
  }
  else {
    // Input from scalar ref
    im->fh = NULL;
    im->path = newSVpv("(data)", 0);
    im->sv_data = *(my_hv_fetch(self, "data"));
    if (SvROK(im->sv_data))
      im->sv_data = SvRV(im->sv_data);
    else
      croak("data is not a scalar ref\n");
  }
  
  im->pixbuf           = NULL;
  im->outbuf           = NULL;
  im->outbuf_size      = 0;
  im->type             = UNKNOWN;
  im->sv_offset        = 0;
  im->image_offset     = 0;
  im->image_length     = 0;
  im->width            = 0;
  im->height           = 0;
  im->width_padding    = 0;
  im->width_inner      = 0;
  im->height_padding   = 0;
  im->height_inner     = 0;
  im->flipped          = 0;
  im->bpp              = 0;
  im->channels         = 0;
  im->has_alpha        = 0;
  im->orientation      = ORIENTATION_NORMAL;
  im->orientation_orig = ORIENTATION_NORMAL;
  im->memory_limit     = 0;
  im->target_width     = 0;
  im->target_height    = 0;
  im->keep_aspect      = 0;
  im->resize_type      = IMAGE_SCALE_TYPE_GD_FIXED;
  im->filter           = 0;
  im->bgcolor          = 0;
  im->used             = 0;
  im->palette          = NULL;
  
#ifdef HAVE_JPEG
  im->cinfo            = NULL;
#endif
#ifdef HAVE_PNG
  im->png_ptr          = NULL;
  im->info_ptr         = NULL;
#endif
#ifdef HAVE_GIF
  im->gif              = NULL;
#endif

  // Read new() options
  if (my_hv_exists(self, "offset")) {
    im->image_offset = SvIV(*(my_hv_fetch(self, "offset")));
    if (im->fh != NULL)
      PerlIO_seek(im->fh, im->image_offset, SEEK_SET);
  }
  
  if (my_hv_exists(self, "length"))
    im->image_length = SvIV(*(my_hv_fetch(self, "length")));
  
  Newz(0, im->buf, sizeof(Buffer), Buffer);
  buffer_init(im->buf, BUFFER_SIZE);
  im->memory_used = BUFFER_SIZE;
  
  // Determine type of file from magic bytes
  if (im->fh != NULL) {
    if ( !_check_buf(im->fh, im->buf, 8, BUFFER_SIZE) ) {
      image_finish(im);
      croak("Unable to read image header for %s\n", file);
    }
  }
  else {
    im->sv_offset = MIN(sv_len(im->sv_data) - im->image_offset, BUFFER_SIZE);
    buffer_append(im->buf, SvPVX(im->sv_data) + im->image_offset, im->sv_offset);
  }
  
  bptr = buffer_ptr(im->buf);
  
  switch (bptr[0]) {
    case 0xff:
      if (bptr[1] == 0xd8 && bptr[2] == 0xff) {
#ifdef HAVE_JPEG
        im->type = JPEG;
#else
        image_finish(im);
        croak("Image::Scale was not built with JPEG support\n");
#endif
      }
      break;
    case 0x89:
      if (bptr[1] == 'P' && bptr[2] == 'N' && bptr[3] == 'G'
        && bptr[4] == 0x0d && bptr[5] == 0x0a && bptr[6] == 0x1a && bptr[7] == 0x0a) {
#ifdef HAVE_PNG
          im->type = PNG;
#else
          image_finish(im);
          croak("Image::Scale was not built with PNG support\n");
#endif
      }
      break;
    case 'G':
      if (bptr[1] == 'I' && bptr[2] == 'F' && bptr[3] == '8'
        && (bptr[4] == '7' || bptr[4] == '9') && bptr[5] == 'a') {
#ifdef HAVE_GIF
          im->type = GIF;
#else
          image_finish(im);
          croak("Image::Scale was not built with GIF support\n");
#endif
      }
      break;
    case 'B':
      if (bptr[1] == 'M') {
        im->type = BMP;
      }
      break;
  }
  
  DEBUG_TRACE("Image type: %d\n", im->type);
    
  // Read image header via type-specific function to determine dimensions
  switch (im->type) {
#ifdef HAVE_JPEG
    case JPEG:
      if ( !image_jpeg_read_header(im) ) {
        ret = 0;
        goto out;
      }
      break;
#endif
#ifdef HAVE_PNG
    case PNG:
      if ( !image_png_read_header(im) ) {
        ret = 0;
        goto out;
      }
      break;
#endif
#ifdef HAVE_GIF
    case GIF:
      if ( !image_gif_read_header(im) ) {
        ret = 0;
        goto out;
      }
      break;
#endif
    case BMP:
      image_bmp_read_header(im);
      break;
    case UNKNOWN:
      warn("Image::Scale unknown file type (%s), first 8 bytes were: %02x %02x %02x %02x %02x %02x %02x %02x\n",
        SvPVX(im->path), bptr[0], bptr[1], bptr[2], bptr[3], bptr[4], bptr[5], bptr[6], bptr[7]);
      ret = 0;
      break;
  }
  
  DEBUG_TRACE("Image dimenensions: %d x %d, channels %d\n", im->width, im->height, im->channels);
  
out:
  if (ret == 0)
    image_finish(im);
  
  return ret;
}
SV * parse_in_chunks(char * filepath, size_t filesize) {
    char *buf;
    size_t bytes_read = 0;
    int max_buf = 1000;
    char *err_msg;
    int block = BLOCK_HEADER;
    int cur_event_type = 0;
    int event_type = 0;
    char event_block = 0;
    char *brnl, *breq;
    AV * data;
    AV * datawrapper;
    AV * events;
    char *line;
    char * nl = "\n";
    char * eq = "=";
    int rewind_pos = 0;
    size_t cur_fpos = 0;
    SV * pbuf;
    SV * pmax_buf;

    AV * HANDLERS = get_av("Opsview::Utils::NDOLogsImporter::HANDLERS", 0);
    AV * INPUT_DATA_TYPE = get_av("Opsview::Utils::NDOLogsImporter::INPUT_DATA_TYPE", 0);

    int init_last_pos;
    int init_block;

    if ( first_read ) {
        if ( ! ( fh = PerlIO_open( filepath, "rb" ) ) ) {
            croak("Could not open file: %s\n", strerror(errno));
        }

        bytes_left = filesize;
        init_last_pos = prev_pos = first_read = 0;
        init_block = block = BLOCK_HEADER;
    } else {
        init_block = block = BLOCK_EVENTS;
        init_last_pos = prev_pos;
    }

    read_begin:


    brnl = NULL;
    breq = NULL;

    pbuf = get_sv("Opsview::Utils::NDOLogsImporter::PARSE_BUF", 0);
    pmax_buf = get_sv("Opsview::Utils::NDOLogsImporter::MAX_BUF_SIZE", 0);

    buf = SvPVX(pbuf);
    max_buf = SvIVX(pmax_buf);

    if ( max_buf < 1024 * 1024 && ! automated_tests ) {
        max_buf = 1024*1024;
        SvIV_set( pmax_buf, max_buf );
        SvGROW( pbuf, max_buf + 1);
        SvCUR_set( pbuf, max_buf);
    }

    if ( bytes_left > 0 ) {

        bytes_read = PerlIO_read(fh, buf + prev_pos, max_buf-prev_pos);
        cur_fpos = PerlIO_tell(fh);

        if ( bytes_read < 0 ) {
            err_msg = strerror(errno);

            PerlIO_close( fh );

            croak("Could not read file: %s\n", err_msg);
        }

        bytes_left -= bytes_read;

        events = (AV *)sv_2mortal((SV *)newAV());

        rewind_pos = last_999(buf+prev_pos, bytes_read);
        prev_pos = bytes_read + prev_pos - rewind_pos;
        buf[prev_pos] = '\0';

        // avg ratio events:file_size = 0.21%
        if ( prev_pos > 1000 ) {
            av_extend( events, (int)(prev_pos * 0.0021) );
        }


        for ( line = strtok_r(buf, nl, &brnl); line != NULL; line = strtok_r(NULL, nl, &brnl) )
        {
            switch(block) {
                case BLOCK_HEADER:
                    {
                        if ( strEQ(line, "STARTDATADUMP") ) {
                            block = BLOCK_EVENTS;
                        }
                    }
                    break;

                case BLOCK_EVENTS:
                    {
                        if ( strEQ(line, "1000") ) { /* NDO_API_ENDDATADUMP */
                            block = BLOCK_FOOTER;
                            continue;
                        }

                        cur_event_type = atoi(line);

                        /* ignore events we are not handling */
                        if ( !  av_exists(HANDLERS, cur_event_type) ) {
                            block = BLOCK_IGNORE_EVENT;
                            continue;
                        }

                        event_block = BLOCK_EVENT_STARTED;
                        if ( cur_event_type != event_type ) {
                            datawrapper = (AV *)sv_2mortal((SV *)newAV());
                            data = (AV *)sv_2mortal((SV *)newAV());

                            av_push( events, newSViv( cur_event_type ) );
                            av_push( datawrapper, newRV( (SV *)data ) );
                            av_push( events, newRV( (SV *)datawrapper ) );

                            event_type = cur_event_type;
                        } else {
                            data = (AV *)sv_2mortal((SV *)newAV());

                            av_push( datawrapper, newRV( (SV *)data ) );
                        }

                        block = BLOCK_EVENT; 
                    }
                    break;

                case BLOCK_EVENT:
                    {
                        if ( strEQ(line, "999") ) { /* NDO_API_ENDDATA */
                            block = BLOCK_EVENTS;
                            event_block = BLOCK_EVENT_ENDED;
                        } else {
                            char *k;
                            char *v;
                            int key;
                            int key_type = 0;
                            int v_len = 0;

                            k = strtok_r(line, eq, &breq); 
                            v = strtok_r(NULL, "\0", &breq);

                            key = atoi(k);
                            /* invalid key, skip parsing */
                            if ( key == 0 ) {
                                goto remove_invalid;
                            }

                            SV ** const k_type = av_fetch(INPUT_DATA_TYPE, key, 0 ); 
                            if ( k_type ) {
                                key_type = SvIVx( *k_type );
                            }

                            if ( v ) {
                                if ( key_type & 1 ) {
                                   v_len = ndo_unescape_buffer( v ); 
                                } else {
                                    v_len = strlen(v);
                                }
                            }

                            if ( key_type & 2 ) {
                                AV * datanstptr;
                                SV ** const datanst = av_fetch(data, key, 0 ); 
                                if ( datanst ) {
                                    datanstptr = (AV *)SvRV( *datanst );
                                } else {
                                    datanstptr = (AV *)sv_2mortal((SV *)newAV());

                                    av_store( data, key, newRV( (SV *)datanstptr ) );
                                }

                                if ( v ) { 
                                    av_push( datanstptr, newSVpvn(v, v_len) );
                                } else {
                                    av_push( datanstptr, newSVpvn("", 0) );
                                }

                            } else {
                                if ( v ) { 
                                    av_store( data, key, newSVpvn(v, v_len) );
                                } else {
                                    av_store( data, key, newSVpvn("", 0) );
                                }
                            }
                        }
                    }
                    break;

                case BLOCK_FOOTER:
                    {
                        if ( strEQ(line, "GOODBYE") ) {
                            block = BLOCK_HEADER;
                        }
                    }
                    break;

                case BLOCK_IGNORE_EVENT:
                    {
                        if ( strEQ(line, "999") ) { /* NDO_API_ENDDATA */
                            block = BLOCK_EVENTS; // go back to EVENTS
                            continue;
                        }
                    }
                    break;
            }
        };

        /* there were some events */
        if ( event_block != BLOCK_HEADER ) {
            if ( event_block != BLOCK_EVENT_ENDED ) {
                remove_invalid:
                    av_pop( datawrapper );
            }

            /* remove whole block if the last block has no events */
            if ( av_len( datawrapper ) == -1 ) {
                av_pop( events );
                av_pop( events );
            }
        }


        if ( av_len(events) > 0 ) {
            if ( rewind_pos > 0 && cur_fpos < filesize ) {
                memmove(buf, buf+prev_pos+1, rewind_pos-1);
            }

            prev_pos = rewind_pos - 1;

            return newRV_inc((SV *) events);
        } else {

            if ( cur_fpos < filesize && event_block != BLOCK_HEADER && event_block != BLOCK_EVENT_ENDED ) {
                int new_max_buf = max_buf * 2;

                SvIV_set( pmax_buf, new_max_buf );
                SvGROW( pbuf, new_max_buf + 1);
                SvCUR_set( pbuf, new_max_buf);
                //start again as previous buffer would be tokenized already
                prev_pos = 0;
                block = init_block;
                event_type = 0;


                PerlIO_close( fh );
                if ( ! ( fh = PerlIO_open( filepath, "rb" ) ) ) {
                    croak("Could not re-open file: %s\n", strerror(errno));
                }
                PerlIO_seek(fh, cur_fpos-bytes_read-init_last_pos, SEEK_SET);
                bytes_left += bytes_read + init_last_pos;

                goto read_begin; 
            }
        }
    }

    parser_reset_iterator();

    return &PL_sv_undef;
}
예제 #9
0
int
_check_buf(PerlIO *infile, Buffer *buf, int min_wanted, int max_wanted)
{
  int ret = 1;
  
  // Do we have enough data?
  if ( buffer_len(buf) < min_wanted ) {
    // Read more data
    uint32_t read;
    uint32_t actual_wanted;
    unsigned char *tmp;

#ifdef _MSC_VER
    uint32_t pos_check = PerlIO_tell(infile);
#endif
    
    if (min_wanted > max_wanted) {
      max_wanted = min_wanted;
    }
    
    // Adjust actual amount to read by the amount we already have in the buffer
    actual_wanted = max_wanted - buffer_len(buf);

    New(0, tmp, actual_wanted, unsigned char);
    
    DEBUG_TRACE("Buffering from file @ %d (min_wanted %d, max_wanted %d, adjusted to %d)\n",
      (int)PerlIO_tell(infile), min_wanted, max_wanted, actual_wanted
    );

    if ( (read = PerlIO_read(infile, tmp, actual_wanted)) <= 0 ) {
      if ( PerlIO_error(infile) ) {
#ifdef _MSC_VER
        // Show windows specific error message as Win32 PerlIO_read does not set errno
        DWORD last_error = GetLastError();
        LPWSTR *errmsg = NULL;
        FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, 0, last_error, 0, (LPWSTR)&errmsg, 0, NULL);
        warn("Error reading: %d %s (read %d wanted %d)\n", last_error, errmsg, read, actual_wanted);
        LocalFree(errmsg);
#else
        warn("Error reading: %s (wanted %d)\n", strerror(errno), actual_wanted);
#endif
      }
      else {
        warn("Error: Unable to read at least %d bytes from file.\n", min_wanted);
      }

      ret = 0;
      goto out;
    }

    buffer_append(buf, tmp, read);

    // Make sure we got enough
    if ( buffer_len(buf) < min_wanted ) {
      warn("Error: Unable to read at least %d bytes from file (only read %d).\n", min_wanted, read);
      ret = 0;
      goto out;
    }

#ifdef _MSC_VER
    // Bug 16095, weird off-by-one bug seen only on Win32 and only when reading a filehandle
    if (PerlIO_tell(infile) != pos_check + read) {
      //PerlIO_printf(PerlIO_stderr(), "Win32 bug, pos should be %d, but was %d\n", pos_check + read, PerlIO_tell(infile));
      PerlIO_seek(infile, pos_check + read, SEEK_SET);
    }
#endif

    DEBUG_TRACE("Buffered %d bytes, new pos %d\n", read, (int)PerlIO_tell(infile));

out:
    Safefree(tmp);
  }
예제 #10
0
void
_parse_wav(PerlIO *infile, Buffer *buf, char *file, uint32_t file_size, HV *info, HV *tags)
{
  uint32_t offset = 12;
  
  while ( offset < file_size - 8 ) {
    char chunk_id[5];
    uint32_t chunk_size;
    
    // Verify we have at least 8 bytes
    if ( !_check_buf(infile, buf, 8, WAV_BLOCK_SIZE) ) {
      return;
    }
    
    strncpy( chunk_id, (char *)buffer_ptr(buf), 4 );
    chunk_id[4] = '\0';
    buffer_consume(buf, 4);
    
    chunk_size = buffer_get_int_le(buf);
    
    // Adjust for padding
    if ( chunk_size % 2 ) {
      chunk_size++;
    }
    
    offset += 8;
    
    DEBUG_TRACE("%s size %d\n", chunk_id, chunk_size);
    
    // Seek past data, everything else we parse
    // XXX: Are there other large chunks we should ignore?
    if ( !strcmp( chunk_id, "data" ) ) {
      SV **bitrate;
      
      my_hv_store( info, "audio_offset", newSVuv(offset) );
      my_hv_store( info, "audio_size", newSVuv(chunk_size) );
      
      // Calculate duration, unless we already know it (i.e. from 'fact')
      if ( !my_hv_fetch( info, "song_length_ms" ) ) {
        bitrate = my_hv_fetch( info, "bitrate" );
        if (bitrate != NULL) {
          my_hv_store( info, "song_length_ms", newSVuv( (chunk_size / (SvIV(*bitrate) / 8.)) * 1000 ) );
        }
      }
      
      // sanity check size, this is inside the data chunk code
      // to support setting audio_offset even when the data size is wrong
      if (chunk_size > file_size - offset) {
        DEBUG_TRACE("data size > file_size, skipping\n");
        return;
      }
      
      // Seek past data if there are more chunks after it
      if ( file_size > offset + chunk_size ) {
        PerlIO_seek(infile, offset + chunk_size, SEEK_SET);
      }
      
      buffer_clear(buf);
    }
    else if ( !strcmp( chunk_id, "id3 " ) || !strcmp( chunk_id, "ID3 " ) || !strcmp( chunk_id, "ID32" ) ) {
      // Read header to verify version
      unsigned char *bptr = buffer_ptr(buf);
      
      if (
        (bptr[0] == 'I' && bptr[1] == 'D' && bptr[2] == '3') &&
        bptr[3] < 0xff && bptr[4] < 0xff &&
        bptr[6] < 0x80 && bptr[7] < 0x80 && bptr[8] < 0x80 && bptr[9] < 0x80
      ) {        
        // Start parsing ID3 from offset
        parse_id3(infile, file, info, tags, offset, file_size);
      }
      
      // Seek past ID3 and clear buffer
      PerlIO_seek(infile, offset + chunk_size, SEEK_SET);
      buffer_clear(buf);
    }
    else {
      // sanity check size
      if (chunk_size > file_size - offset) {
        DEBUG_TRACE("chunk_size > file_size, skipping\n");
        return;
      }
      
      // Make sure we have enough data
      if ( !_check_buf(infile, buf, chunk_size, WAV_BLOCK_SIZE) ) {
        return;
      }
      
      if ( !strcmp( chunk_id, "fmt " ) ) {
        _parse_wav_fmt(buf, chunk_size, info);
      }
      else if ( !strcmp( chunk_id, "LIST" ) ) {
        _parse_wav_list(buf, chunk_size, tags);
      }
      else if ( !strcmp( chunk_id, "PEAK" ) ) {
        _parse_wav_peak(buf, chunk_size, info, 0);
      }
      else if ( !strcmp( chunk_id, "fact" ) ) {
        // A 4-byte fact chunk in a non-PCM wav is the number of samples
        // Use it to calculate duration
        if ( chunk_size == 4 ) {
          uint32_t num_samples = buffer_get_int_le(buf);
          SV **samplerate = my_hv_fetch( info, "samplerate" );
          if (samplerate != NULL) {
            my_hv_store( info, "song_length_ms", newSVuv( (num_samples * 1000) / SvIV(*samplerate) ) );
          }
        }
        else {
          // Unknown, skip it
          buffer_consume(buf, chunk_size);
        }
      }
      else {
        if ( 
             !strcmp(chunk_id, "SAUR") // Wavosour data chunk
          || !strcmp(chunk_id, "otom") // Wavosaur?
          || !strcmp(chunk_id, "PAD ") // Padding
        ) {
          // Known chunks to skip
        }
        else {
          // Warn about unknown chunks so we can investigate them
          PerlIO_printf(PerlIO_stderr(), "Unhandled WAV chunk %s size %d (skipped)\n", chunk_id, chunk_size);
        }
        
        buffer_consume(buf, chunk_size);
      }
    }
    
    offset += chunk_size;
  }
}
예제 #11
0
void
_parse_aiff(PerlIO *infile, Buffer *buf, char *file, uint32_t file_size, HV *info, HV *tags)
{
  uint32_t offset = 12;
  
  while ( offset < file_size - 8 ) {
    char chunk_id[5];
    int chunk_size;
    
    // Verify we have at least 8 bytes
    if ( !_check_buf(infile, buf, 8, WAV_BLOCK_SIZE) ) {
      return;
    }
    
    strncpy( chunk_id, (char *)buffer_ptr(buf), 4 );
    chunk_id[4] = '\0';
    buffer_consume(buf, 4);
    
    chunk_size = buffer_get_int(buf);
    
    // Adjust for padding
    if ( chunk_size % 2 ) {
      chunk_size++;
    }
    
    offset += 8;
    
    DEBUG_TRACE("%s size %d\n", chunk_id, chunk_size);
    
    // Seek past SSND, everything else we parse
    // XXX: Are there other large chunks we should ignore?
    if ( !strcmp( chunk_id, "SSND" ) ) {
      my_hv_store( info, "audio_offset", newSVuv(offset) );
      my_hv_store( info, "audio_size", newSVuv(chunk_size) );

      // Seek past data if there are more chunks after it
      if ( file_size > offset + chunk_size ) {
        PerlIO_seek(infile, offset + chunk_size, SEEK_SET);
      }
      
      buffer_clear(buf);
    }
    else if ( !strcmp( chunk_id, "id3 " ) || !strcmp( chunk_id, "ID3 " ) || !strcmp( chunk_id, "ID32" ) ) {
      // Read header to verify version
      unsigned char *bptr = buffer_ptr(buf);
      
      if (
        (bptr[0] == 'I' && bptr[1] == 'D' && bptr[2] == '3') &&
        bptr[3] < 0xff && bptr[4] < 0xff &&
        bptr[6] < 0x80 && bptr[7] < 0x80 && bptr[8] < 0x80 && bptr[9] < 0x80
      ) {        
        // Start parsing ID3 from offset
        parse_id3(infile, file, info, tags, offset, file_size);
      }
      
      // Seen ID3 chunks with the chunk size in little-endian instead of big-endian
      if (chunk_size < 0 || offset + chunk_size > file_size) {
        break;
      }
      
      // Seek past ID3 and clear buffer
      DEBUG_TRACE("Seeking past ID3 to %d\n", offset + chunk_size);
      PerlIO_seek(infile, offset + chunk_size, SEEK_SET);
      buffer_clear(buf);
    }
    else {
      // Make sure we have enough data
      if ( !_check_buf(infile, buf, chunk_size, WAV_BLOCK_SIZE) ) {
        return;
      }
      
      if ( !strcmp( chunk_id, "COMM" ) ) {
        _parse_aiff_comm(buf, chunk_size, info);
      }
      else if ( !strcmp( chunk_id, "PEAK" ) ) {
        _parse_wav_peak(buf, chunk_size, info, 1);
      }
      else {
        PerlIO_printf(PerlIO_stderr(), "Unhandled AIFF chunk %s size %d (skipped)\n", chunk_id, chunk_size);
        buffer_consume(buf, chunk_size);
      }
    }
    
    offset += chunk_size;
  }
}