Rapid analyzing method and system for SVG (Scalable Vector Graphics) file

Abstract

The invention discloses a rapid analyzing method and system for an SVG (Scalable Vector Graphics) file; as node labels in the SVG file generally are composed of character strings with unfixed lengths, a large number of node labels are needed to be compared and identified in the file analyzing process; and the comparison speed of the character strings is relatively slower so that the identifying speed of the node labels becomes slow. The rapid analyzing method comprises the following steps of: firstly mapping the character strings to simple markers (such as numbers, single characters or 2-bitcharacter strings) by using a mapping technology, directly comparing the simple markers when the node labels of the SVG (Scalable Vector Graphics) file are analyzed, and therefore, the character strings with unfixed lengths are not needed to be compared one by one, AND the comparison speed of the numbers or the single character is higher than that of the character strings with unfixed lengths. Therefore, by adopting the invention, the analyzing speed of the SVG (Scalable Vector Graphics) file can be remarkably increased under the condition that the SVG (Scalable Vector Graphics) file containsa large number of node labels.

Description

technical field [0001] The invention relates to a vector graphic analysis technology, in particular to an SVG file analysis technology. Background technique [0002] The graphics displayed in the computer can generally be divided into two categories - vector graphics and bitmaps. [0003] Vector graphics use straight lines and curves to describe graphics. The elements of these graphics are some points, lines, rectangles, polygons, circles and arcs, etc., which are all calculated by mathematical formulas. For example, a vector graphic of a flower is actually composed of line segments to form an outer frame outline, and the color of the flower is determined by the color of the outer frame and the color enclosed by the outer frame. Because vector graphics can be calculated by formulas, the file size of vector graphics is generally small. The biggest advantage of vector graphics is that it will not be distorted no matter how zoomed in, zoomed out or rotated. [0004] Bitmaps,...

AI Technical Summary

Problems solved by technology

Due to the general application of SVG in the industrial field, the files are relatively complex, with many file nodes and rich file content, so the files themselves are relatively large, and the number of SVG nodes is likely to exceed 10,000. It takes a lot of time to identify the SVG node labels during the parsing process. comparison, making the file size and the number of nodes the biggest problem affecting the speed of the SVG parser

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