CN112580322A - File fingerprint comparison method, device, equipment and storage medium - Google Patents
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Abstract
The embodiment of the invention provides a file fingerprint comparison method, which comprises the following steps: acquiring at least two file fingerprints to be compared; respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale; comparing the characters at each corresponding position in the character string respectively; determining a distinguishing character and identifying the distinguishing character. Meanwhile, a corresponding file fingerprint comparison device is also disclosed. The comparison method of the technical scheme of the invention can quickly and intuitively display the difference between two or more file fingerprints, and has the advantages of simple program and high operation efficiency.
Description
Technical Field
The invention relates to the field of data information, in particular to a file fingerprint comparison method, a file fingerprint comparison device, file fingerprint comparison equipment and a corresponding storage medium.
Background
In software development and document processing, it is often necessary to compare the differences of two files. Currently, most of the existing instructions are used for comparison processing, such as diff commands or md5 algorithm, but only one comparison result can be returned in this way to identify that two files are the same or different, and the difference between the files cannot be displayed intuitively and in detail. If professional software is adopted for differential display, the processing resources of the system are wasted. Many binary files are composed of multi-bit binary digits, are large in length, cannot be displayed through simple data formats and diagrams, and related prior art is not found at present.
Disclosure of Invention
The embodiment of the invention aims to provide a file fingerprint comparison method and device, so as to at least solve the problem that file differences in the prior art cannot be visually displayed through a chart.
In order to achieve the above object, in a first aspect of the present invention, a file fingerprint comparison method is provided, including:
acquiring at least two file fingerprints to be compared;
respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale;
comparing the characters at each corresponding position in the character string respectively;
determining a distinguishing character and identifying the distinguishing character.
Optionally, after the file fingerprints to be compared are respectively converted into character strings with the same digits and a preset scale, the method further includes:
storing each character string in an array respectively, so that one character in each character string forms one element in the corresponding array; and/or the presence of a gas in the gas,
comparing the characters at each corresponding position in the character string respectively, including:
and respectively comparing the elements at each corresponding position in the array.
Optionally, after storing each of the character strings in an array, the method further includes:
packaging each element in the array into a json object respectively, wherein the json object at least comprises: the device comprises an element name, an element value and a flag bit, wherein the flag bit is used for identifying whether the corresponding elements are the same or not.
Optionally, the preset scale includes at least one of the following: binary, octal, decimal, or hexadecimal.
Optionally, after the file fingerprints to be compared are respectively converted into character strings with the same digits and a preset scale, the method further includes:
and arranging the character strings to be compared according to a preset shape so as to align the characters at corresponding positions in each character string.
Optionally, the preset shape includes: at least one of concentric circles, squares nested within each other with four sides parallel to each other, and parallel lines.
Optionally, the character strings to be compared are arranged according to a preset shape, including:
in the preset front-end display assembly, respectively identifying each group of distinguishing character strings in the character strings arranged according to the preset shape according to a preset identification mode, wherein the preset identification mode comprises at least one of the following modes: the display color is modified into a preset color, the display background color is modified into a preset color, and the preset color is selected by adopting a preset symbol.
In a second aspect of the present invention, there is also provided a file fingerprint comparison apparatus, including:
the acquisition module is used for acquiring at least two file fingerprints to be compared;
the conversion module is used for respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale;
the comparison module is used for respectively comparing the characters at each corresponding position in the character string; and
and the identification module is used for determining the distinguishing characters and identifying the distinguishing characters.
In a third aspect of the present invention, there is also provided a file fingerprint comparison apparatus, including at least one processor, and at least one memory and a bus connected to the processor; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instruction in the memory so as to execute the file fingerprint comparison method.
In a fourth aspect of the present invention, there is also provided a storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the aforementioned file fingerprint comparison method.
According to the technical scheme, the simple and reliable intermediate assembly technology is adopted, so that the difference between two or more file fingerprints can be displayed rapidly and visually, and the method has the advantages of simple program and high operation efficiency.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of a file fingerprint comparison method according to an embodiment of the present invention;
FIG. 2 is a display diagram generated in a method for comparing fingerprints of a document according to an embodiment of the present invention;
FIG. 3 is a display diagram generated in a method for comparing fingerprints of documents according to another embodiment of the present invention;
FIG. 4 is a display diagram generated by a method for comparing fingerprints of documents according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a file fingerprint comparison device according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, and bottom" is generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
Fig. 1 is a schematic diagram of a file fingerprint comparison method according to an embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a file fingerprint comparison method, where the method includes:
acquiring at least two file fingerprints to be compared;
respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale;
comparing the characters at each corresponding position in the character string respectively;
determining a distinguishing character and identifying the distinguishing character.
Therefore, compared with the common file fingerprint difference display method, the method can visually display the difference of the file fingerprints through the graphs and has the advantages of simple program and high operation efficiency.
Specifically, the idea of the present invention is to divide the original binary file, encapsulate and decouple each single element, and transform it into an independent unit. Such as a file fingerprint, for example, the file fingerprint may be a 64-bit binary value. Respectively acquiring fingerprints a and b of the two files, and respectively cutting the file fingerprint a and the file fingerprint b into 64 arrays arrA and arrB consisting of 0 and 1. Other file fingerprints may also be referred to this method. The binary system is preset, and a user can convert the binary system into other binary systems according to needs. And setting a flag bit in the packaged object, and identifying whether the single elements at the same position are the same or not through the flag bit. The mark bit and the different display modes are used for arranging the independent units in a certain sequence to form a visual pattern, and the visual pattern can display the different display modes contained in the independent units. Therefore, the difference in the binary file is visually and detailedly displayed. Meanwhile, the implementation mode borrows the existing Sunburst component, avoids repeated programming, has the characteristic of simple program, is compatible with most current browsers, has low requirement on an operation bottom layer, and has the advantages of good mobility and high operation efficiency.
Further, after converting the file fingerprints to be compared into character strings with the same digits and a preset scale respectively, the method further includes: storing each character string in an array respectively, so that one character in each character string forms one element in the corresponding array; and/or comparing the characters at each corresponding position in the character string respectively, including: and respectively comparing the elements at each corresponding position in the array. And: packaging each element in the array into a json object respectively, wherein the json object at least comprises: the device comprises an element name, an element value and a flag bit, wherein the flag bit is used for identifying whether the corresponding elements are the same or not.
In one embodiment of the present invention, the file fingerprint is divided into an array of N individual elements according to its number of bits N. The format of the object is JSON format. JSON (JavaScript Object Notation) is a lightweight data exchange format. It stores and represents data in a text format that is completely independent of the programming language, based on a subset of ECMAScript (js specification set by the european computer association). The compact and clear hierarchy makes JSON an ideal data exchange language. The JSON format is easy to read and write by people, and is easy to analyze and generate by a machine, and the network transmission efficiency is effectively improved.
In one embodiment provided by the present invention, the object includes a flag bit for identifying "dissimilarity" of the single element and its corresponding position; the object further comprises: an element name and an element value; the element name is used for identifying that the object is located at the nth position of the file fingerprint, and N is less than or equal to N; the content is the value of the nth bit. The object thus encapsulated contains at least: the information carried by the element name, the element value and the flag bit has the characteristic of low coupling, and a user can directly acquire the numerical value of the bit and the difference corresponding to the numerical value through a single object.
And traversing the arrA array according to the file fingerprint example, and re-encapsulating each element in the array into a json object named jsonna, wherein the jsonna contains fields such as name, value and same. The name is a position value of the element (if the name is a binary value, the value is 0 to 63, or 1 to 64), the value defaults to 1, the same represents whether corresponding binary digits are consistent, and the default is true. Then the default actual structure of jsonA is as follows: { name: '1', value:1, same: true }. And meanwhile, elements at corresponding positions in the arrB array are also packaged into the same json object json B, and the default structure of the json object json B is the same as json A. Comparing value values under the same name value of the json B and the json A, if the value values are different, changing the same fields in the json A and the json B into false, and meanwhile pushing the object json Bpush into a children array of the json A; if the data are the same, the same field in jsonna and jsonnb is default to true, and the object jsonn bpush is also added to the children array of jsonna to finally form data in json format.
Optionally, the preset scale includes at least one of the following: binary, octal, decimal, or hexadecimal. The foregoing embodiment is illustrated as binary, and in an actual implementation situation, the content of the binary file may be converted into a file in other binary systems, such as octal, decimal, or hexadecimal, according to the preset of the user. When the file content is in other systems, the value of value is correspondingly changed.
In an embodiment provided by the present invention, after converting the file fingerprints to be compared into character strings with the same number of bits and a preset scale, the method further includes: and arranging the character strings to be compared according to a preset shape so as to align the characters at corresponding positions in each character string. The arrangement of the browser can adopt the existing display assembly, repeated programming is avoided, the browser has the characteristic of simple program, the program is compatible with most of current browsers, the requirement on an operation bottom layer is low, and the browser has the advantages of good mobility and high operation efficiency. For example using the Sunburst display module in ECharts. ECharts: an open source visualization library realized by JavaScript can smoothly run on a PC and a mobile device, is compatible with most current browsers (IE8/9/10/11, Chrome, Firefox, Safari and the like), has a bottom layer depending on a lightweight vector graphics library ZRender, and provides a visual, interactive and highly personalized and customized data visualization chart. Sunburst: the Xurihig chart, a visual presentation component of EChats, presents specified data in the form of nested pie charts. In one embodiment provided below, the displaying the object with the Sunburst component includes: and calling a Sunburst component in Echarts to display the combined object containing the flag bit and the differentiated display style. And finally rendering the processed data through a Sunburst component in Echarts, wherein the specific configuration is as follows: the configuration thereof is realized by a function or code.
The resulting display is shown in fig. 2 and 3. FIG. 2 is a display diagram generated in a method for comparing fingerprints of a document according to an embodiment of the present invention; which shows the case where two file fingerprints are identical. As can be seen, the 64-bit binary values of the inner ring correspond to and are the same as the 64-bit binary values of the outer ring. The default image is shown without rendering effects. FIG. 3 is a display diagram generated by a method for comparing fingerprints of documents according to another embodiment of the present invention. Which shows the case where there is a difference between two file fingerprints. As can be seen from the figure, in the binary values having the difference, the sector area corresponding to the difference value is rendered in gray.
In one embodiment of the present invention, the preset shape includes: at least one of concentric circles, squares nested within each other with four sides parallel to each other, and parallel lines. The foregoing embodiments only show the way of concentric Asahi-sun pictures, but the invention can also be implemented in other embodiments, such as concentric circles, squares nested inside each other with four sides parallel to each other, parallel lines. Fig. 4 is a display diagram generated in the file fingerprint comparison method according to another embodiment of the present invention, and the diagrams in other display manners are not listed.
In an embodiment provided by the present invention, the arranging the character strings to be compared according to a preset shape includes:
in the preset front-end display assembly, respectively identifying each group of distinguishing character strings in the character strings arranged according to the preset shape according to a preset identification mode, wherein the preset identification mode comprises at least one of the following modes: the display color is modified into a preset color, the display background color is modified into a preset color, and the preset color is selected by adopting a preset symbol. The present embodiment will be described below by taking the preset of different display colors as an example.
The distinguishing pattern may be a display font modified into a preset font, a shadow added, a display color modified into a preset color, a display background color modified into a preset color, a selection using a preset symbol, or other distinguishing display modes that can be recognized by a user. It is preferable that the display color is modified to a preset color, and the standard color provided by the system is directly set, that is, different front-end styles are added according to the same field. Following the foregoing example of file fingerprints, after obtaining the foregoing format data, the front end traverses the object, and adds a field "itemStyle" to the object whose same field is true in the object: { "color": "white", i.e., shown as white; add field "itemsthyle" to the object whose name is false: { "color": "red", i.e., shown in red. The code processed by this step can be used for display.
The above display mode is preferably to compare 2 file fingerprints, and also to compare a plurality of file fingerprints. When there are multiple file fingerprints to be aligned, the same applies to the above-described manner, except that the divided array is multiple, and the generated Asahi date map (Sunburst map) is composed of multiple layers of nested pie maps. The embodiment of the invention is applied to the fingerprints of a plurality of files, so that the difference between the plurality of files can be visually displayed, and the use feeling of a user is improved.
In an embodiment provided by the present invention, a file fingerprint comparison apparatus is further provided, where the apparatus includes:
the acquisition module is used for acquiring at least two file fingerprints to be compared;
the conversion module is used for respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale;
the comparison module is used for respectively comparing the characters at each corresponding position in the character string; and
and the identification module is used for determining the distinguishing characters and identifying the distinguishing characters.
The modules and methods in the above devices correspond to each other, and the technical details and advantageous effects thereof are not described herein again.
Fig. 5 is a schematic structural diagram of a file fingerprint comparison device according to an embodiment of the present invention, as shown in the figure, the file fingerprint comparison device includes at least one processor, and at least one memory and a bus connected to the processor; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instruction in the memory so as to execute the file fingerprint comparison method. The processor may include, but is not limited to, a general purpose processor, a special purpose processor, a conventional processor, a plurality of microprocessors, a controller, a microcontroller, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) circuit, any other type of Integrated Circuit (IC), a state machine, and the like. In a common scenario, the device is preferably a server.
Embodiments of the present invention further provide a storage medium, on which computer program instructions are stored, and the computer program instructions, when executed by a processor, implement the steps of the foregoing file fingerprint comparison method.
By the technical scheme, the difference between two or more file fingerprints can be displayed quickly and intuitively, and the method has the advantages of simple program and high operation efficiency.
While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications are within the scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention will not be described separately for the various possible combinations.
Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as disclosed in the embodiments of the present invention as long as it does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A file fingerprint comparison method is characterized by comprising the following steps:
acquiring at least two file fingerprints to be compared;
respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale;
comparing the characters at each corresponding position in the character string respectively;
determining a distinguishing character and identifying the distinguishing character.
2. The method according to claim 1, wherein after converting the file fingerprints to be compared into strings with the same number of bits and a preset scale, respectively, the method further comprises:
storing each character string in an array respectively, so that one character in each character string forms one element in the corresponding array; and/or the presence of a gas in the gas,
comparing the characters at each corresponding position in the character string respectively, including:
and respectively comparing the elements at each corresponding position in the array.
3. The method of claim 2, wherein after storing each of the strings in an array, the method further comprises:
packaging each element in the array into a json object respectively, wherein the json object at least comprises: the device comprises an element name, an element value and a flag bit, wherein the flag bit is used for identifying whether the corresponding elements are the same or not.
4. The method of claim 1, wherein the preset bin comprises at least one of: binary, octal, decimal, or hexadecimal.
5. The method according to claim 1, wherein after converting the file fingerprints to be compared into character strings with the same number of bits and a preset scale, the method further comprises:
and arranging the character strings to be compared according to a preset shape so as to align the characters at corresponding positions in each character string.
6. The method of claim 4, wherein the preset shape comprises: at least one of concentric circles, squares nested within each other with four sides parallel to each other, and parallel lines.
7. The method according to claim 5, wherein arranging the character strings to be compared according to a preset shape comprises:
in the preset front-end display assembly, respectively identifying each group of distinguishing character strings in the character strings arranged according to the preset shape according to a preset identification mode, wherein the preset identification mode comprises at least one of the following modes: the display color is modified into a preset color, the display background color is modified into a preset color, and the preset color is selected by adopting a preset symbol.
8. An apparatus for comparing fingerprints of documents, the apparatus comprising:
the acquisition module is used for acquiring at least two file fingerprints to be compared;
the conversion module is used for respectively converting the file fingerprints to be compared into character strings with the same digits and a preset scale;
the comparison module is used for respectively comparing the characters at each corresponding position in the character string; and
and the identification module is used for determining the distinguishing characters and identifying the distinguishing characters.
9. The file fingerprint comparison equipment is characterized by comprising at least one processor, at least one memory and a bus, wherein the memory and the bus are connected with the processor; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory to execute the file fingerprint comparison method of any one of claims 1 to 7.
10. A storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the file fingerprint comparison method of any one of claims 1 to 7.
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