CN111090980A - PDF file generation method, computer equipment and readable storage medium - Google Patents
PDF file generation method, computer equipment and readable storage medium Download PDFInfo
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Abstract
The invention provides a PDF file generation method, computer equipment and a readable storage medium, wherein the PDF file generation method comprises the following steps: obtaining source and destination labels of the typesetting file; searching the position of a source in the typesetting file; adding a destination label at the position of the searched source; and generating a PDF file according to the typesetting file, the position of the source and the destination label. According to the method for generating the PDF file, the source and the destination label in the typesetting file are obtained, the position of the source in the typesetting file is searched, the destination label is added at the searched position of the source, and the PDF file is generated according to the typesetting file, the position of the source and the destination label, so that the destination label can be opened according to the source, the generation of the enhanced PDF file is realized, the enhanced PDF file can be automatically generated, the difficulty in creating the enhanced PDF file is reduced, and the burden of a user is reduced.
Description
Technical Field
The invention relates to the technical field of PDF conversion, in particular to a PDF file generation method, a computer device and a computer readable storage medium.
Background
At present, for an enhanced PDF file, a hyperlink is usually manually inserted into the PDF file to implement a source-to-destination region jump, specifically, the enhanced PDF file has a source (a drawing, a table, a reference number) and a destination region, that is, clicking a source region (an annotation object in the PDF) triggers an action to jump to a target region, so that a user is required to manually insert a hyperlink to implement a source-to-destination jump, which further causes great difficulty in operation of converting the PDF file and increases workload of the user.
Disclosure of Invention
The present invention is directed to overcoming at least one of the problems set forth in the prior art.
Therefore, the embodiment of the first aspect of the invention provides a method for generating a PDF file.
The embodiment of the second aspect of the invention provides a computer device.
A third aspect of the invention provides a computer-readable storage medium.
In view of this, according to an embodiment of the first aspect of the present invention, the present invention provides a method for generating a PDF file, including: obtaining source and destination labels of the typesetting file; searching the position of a source in the typesetting file; adding a destination label at the position of the searched source; and generating a PDF file according to the typesetting file, the position of the source and the destination label.
According to the method for generating the PDF file, the source and the destination label in the typesetting file are obtained, the position of the source in the typesetting file is searched, the destination label is added at the searched position of the source, and the PDF file is generated according to the typesetting file, the position of the source and the destination label, so that the destination label can be opened according to the source, the generation of the enhanced PDF file is realized, the enhanced PDF file can be automatically generated, the difficulty in creating the enhanced PDF file is reduced, and the burden of a user is reduced.
In addition, the method for generating a PDF file according to the above embodiment of the present invention may further have the following additional technical features:
on the basis of the technical scheme, further, the step of obtaining the source and destination tags of the typesetting file specifically comprises: and acquiring the source and destination tags of the typesetting file through an XML typesetting engine.
In the technical scheme, the XML typesetting engine is used for acquiring the source tags and the destination tags of the typesetting file, so that the formats of the destination tags can be consistent, and the contents are simple.
On the basis of any of the above technical solutions, further, the step of searching for the location of the source in the composition file specifically includes: performing full matching search and regular search based on the existing content of the typesetting file to search the position of a source; judging whether the search result is correct or not; under the condition that the search result is correct, adding a target label at the position of the searched source; and in the case that the search structure is incorrect, the search is carried out again and/or a prompt is sent out.
In the technical scheme, the position of a source is searched in a typesetting file by full matching search and regular search, then the search result is judged, a target label is added to the position of the source under the condition that the search result is correct, and a prompt is searched and/or sent again under the condition that the search result is incorrect, so that the accuracy of the content of the PDF file is improved in a mode of verifying the search result.
On the basis of any one of the above technical solutions, further, the step of determining whether the search result is correct specifically includes: judging whether the characters after the source are non-numeric characters, and judging whether the searched source content conforms to the omitted style of the typesetting file; and if the judgment results are all yes, the search result is correct.
In the technical scheme, the reference characters are definitely non-numeric characters after the reference characters are labeled, so that whether the position of the source is correct or not can be judged by taking whether the characters after the source are non-numeric characters or not as a judgment standard, and whether the target label content searched by the source is consistent with the layout omission style or not is taken as a judgment standard, and the accuracy of judging the position of the source is further ensured.
On the basis of any of the above technical solutions, further, after the step of adding the destination tag at the location of the found source, the method further includes: and adjusting the color of the characters in the target label.
In the technical scheme, the character color in the target label is adjusted to be a preset color, namely, the content of the target label is highlighted, so that the browsing convenience of the PDF file is improved.
On the basis of any of the above technical solutions, further, the step of generating a PDF file according to the layout file, the location of the source, and the destination tag specifically includes: calculating the region coordinates and page numbers of the typesetting file with the target label; adding the region coordinates and the page number of the typesetting file corresponding to the target label to the annotation object, and associating the action object of the target label; generating a PDF file.
According to the technical scheme, the target label is added to the annotation object according to the region coordinate and the page number of the typesetting file where the target label appears, and the action object of the target label is associated to generate the PDF file, so that the completeness of the PDF file and the accuracy of the insertion position of the target label are guaranteed, and the file skipping is realized.
On the basis of any one of the above technical solutions, further, the content of the source and destination tags is any one of the following: references, graphs, DOI types.
In this solution, the content of the source and destination tags may be any of references, graphs, DOI types.
On the basis of any of the above technical solutions, further, on the basis that the number of the source and the destination tags is multiple, after the step of adding the destination tag to the found position of the source is performed on one destination tag, the step of finding the position of the source in the composition file is performed on the other source.
In the technical scheme, after the target label is inserted into the typesetting file, the layout of the typesetting file is changed, so that after the target label of one source is inserted, the position of the next source is searched, and the accuracy of the position of the source and the adding position of the target label in the whole typesetting file can be ensured.
According to a second aspect of embodiments of the present invention, the present invention provides a computer apparatus comprising: a memory for storing a computer program; a processor, configured to execute a computer program to implement the method for generating a PDF file according to any one of the above technical solutions.
The computer device provided by the present invention includes a computer program for executing a computer program to implement the method for generating a PDF file according to any one of the above technical solutions, and therefore, all the beneficial effects of the method for generating a PDF file according to any one of the above technical solutions are not described herein.
According to a third aspect of the present invention, the present invention provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method for generating a PDF file according to any one of the above technical solutions.
The computer-readable storage medium of the present invention stores a computer program that is executed by a processor to implement the method for generating a PDF file according to any one of the above-mentioned technical solutions, and therefore, all the advantages of the method for generating a PDF file according to any one of the above-mentioned technical solutions are provided, which are not described herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart illustrating a PDF file generating method according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a PDF file generating method according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating a PDF file generating method according to a third embodiment of the present invention;
fig. 4 is a flowchart illustrating a PDF file generating method according to a fourth embodiment of the present invention;
fig. 5 is a flowchart illustrating a PDF file generating method according to a fifth embodiment of the present invention;
fig. 6 is a flowchart illustrating a PDF file generating method according to a sixth embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Methods of generating a PDF file, computer apparatuses, and computer-readable storage media provided according to some embodiments of the present invention are described below with reference to fig. 1 to 6.
Fig. 1 is a flowchart illustrating a PDF file generating method according to a first embodiment of the present invention.
As shown in fig. 1, a specific process of a PDF file generation method according to a first embodiment of the present invention is as follows:
step 102: obtaining source and destination labels of the typesetting file;
step 104: searching the position of a source in the typesetting file;
step 106: adding a destination label at the position of the searched source;
step 108: and generating a PDF file according to the typesetting file, the position of the source and the destination label.
According to the method for generating the PDF file, the source and the destination label in the typesetting file are obtained, the position of the source in the typesetting file is searched, the destination label is added at the searched position of the source, and the PDF file is generated according to the typesetting file, the position of the source and the destination label, so that the destination label can be opened according to the source, the generation of the enhanced PDF file is realized, the enhanced PDF file can be automatically generated, the difficulty in creating the enhanced PDF file is reduced, and the burden of a user is reduced.
Specifically, the source content format is not fixed, and the tag content and the layout content are different, the layout of the typesetting file has label omission for beauty, and the tag XML file completes the omission. For example, the numbers of the figures and tables and the reference numbers have continuous numbers and ellipses, and the connection symbols are not fixed. For example: references cited in [1] or [1-4, 6], etc.; the drawing and Table reference is divided into Chinese keywords ' drawing ', ' Table ' or ' icon ', English keywords ' Figure, Table, Fig ' label connector ', ' to ' and blank space combination multiple style conditions.
Thus, the location of the source is convenient to find.
Fig. 2 is a flowchart illustrating a PDF file generating method according to a second embodiment of the present invention.
As shown in fig. 2, a specific process of the PDF file generation method according to the second embodiment of the present invention is as follows:
step 202: obtaining source and destination labels of the typesetting file;
step 204: performing full matching search and regular search based on the existing content of the typesetting file to search the position of a source;
step 206: judging whether the search result is correct or not;
step 208: under the condition that the search result is correct, adding a target label at the position of the searched source;
step 210: when the search structure is incorrect, searching again and/or sending out a prompt;
step 212: adding a destination label at the position of the searched source;
step 214: and generating a PDF file according to the typesetting file, the position of the source and the destination label.
On the basis of the first embodiment, the method for generating the PDF file further searches the position of the source in the typesetting file by full-matching search and regular search, judges the search result, adds the destination tag to the position of the source when the search result is correct, re-searches and/or sends a prompt when the search result is incorrect, and improves the accuracy of the PDF file content by verifying the search result.
Fig. 3 is a flowchart illustrating a PDF file generating method according to a third embodiment of the present invention.
As shown in fig. 3, a specific process of the PDF file generation method according to the third embodiment of the present invention is as follows:
step 302: obtaining source and destination labels of the typesetting file;
step 304: performing full matching search and regular search based on the existing content of the typesetting file to search the position of a source;
step 306: judging whether the characters after the source are non-numeric characters, and judging whether the searched source content conforms to the omitted style of the typesetting file;
step 308: if the judgment results are all yes, the search result is correct;
step 310: under the condition that the search result is correct, adding a target label at the position of the searched source;
step 312: when the search structure is incorrect, searching again and/or sending out a prompt;
step 314: adding a destination label at the position of the searched source;
step 316: and generating a PDF file according to the typesetting file, the position of the source and the destination label.
Based on the second embodiment, the method for generating a PDF file provided by the present invention further determines that the reference label is a non-numeric character, and therefore, whether the position of the source is correct can be determined by using whether the character after the source is a non-numeric character as a determination criterion, and whether the target label content searched by the source conforms to the layout omission style as a determination criterion, thereby ensuring the accuracy of the determination of the position of the source.
Fig. 4 is a flowchart illustrating a PDF file generating method according to a fourth embodiment of the present invention.
As shown in fig. 4, a specific process of the PDF file generation method according to the fourth embodiment of the present invention is as follows:
step 402: obtaining source and destination labels of the typesetting file;
step 404: performing full matching search and regular search based on the existing content of the typesetting file to search the position of a source;
step 406: judging whether the characters after the source are non-numeric characters, and judging whether the searched source content conforms to the omitted style of the typesetting file;
step 408: if the judgment results are all yes, the search result is correct;
step 410: under the condition that the search result is correct, adding a target label at the position of the searched source;
step 412: when the search structure is incorrect, searching again and/or sending out a prompt;
step 414: adding a destination label at the position of the searched source;
step 416: calculating the region coordinates and page numbers of the typesetting file with the target label;
step 418: adding the region coordinates and the page number of the typesetting file corresponding to the target label to the annotation object, and associating the action object of the target label;
step 420: generating a PDF file.
On the basis of any one of the first to third embodiments, the method for generating a PDF file according to the present invention further adds the destination tag to the annotation object according to the region coordinates and page numbers of the layout file where the destination tag appears, and associates the action object of the destination tag to generate the PDF file, thereby ensuring the accuracy of the PDF file and the insertion position of the destination tag, and realizing the file jump.
Fig. 5 is a flowchart illustrating a PDF file generating method according to a fifth embodiment of the present invention.
As shown in fig. 5, a specific flow of a PDF file generation method according to a fifth embodiment of the present invention is as follows:
step 502: receiving a typesetting file;
step 504: receiving an output parameter;
step 506: acquiring a source and a destination through a tag XML;
step 508: searching and positioning a typesetting file;
step 510: adding a label to the typesetting file, and setting the content of the label to be blue;
step 512: converting the label of the typesetting file into a PDF annotation object, and associating an action object;
step 514: an interactive PDF is generated.
Specifically, the function that can be used in the generation process of the user is the function of typesetting the document output printing level PDF. Academic papers enhance the PDF, i.e., the association of the source (map, table, reference quote) and destination areas, and trigger actions to jump to the target area when clicking on the source area (annotation object in the PDF). The XML typesetting system can not require a user to manually establish a hyperlink and needs to be automatically established when the enhanced PDF is output in multiple formats, and aiming at the requirement, the invention provides a method for generating an enhanced PDF file of an output academic paper.
The method for generating the PDF file realizes the series conversion among the typesetting file, the xml file, the labeled typesetting file and the interactive PDF file, and is convenient for repeatedly editing the document content; mature functions are combined and expanded, development is facilitated, and results of XML typesetting are fully utilized; the variety diversity of the PDF file is realized.
The scheme also meets the following requirements:
1. the output interaction PDF conforms to the PDF document standard.
2. The source and destination comments and the action objects have simple structure, fixed and common sequence format and single rule in PDF.
3. The process of obtaining source and target contents, the process of searching and converting the layout area and the process of adding labels are simple and have no complex algorithm.
4. No modifications are made to the source comp file.
5. And the conversion efficiency is more efficient than that of manual addition by a user through automatic processing.
The enhanced PDF is interactive PDF, actually realizes source and destination associated marks, and belongs to mosaic use of an explanation object and an action object in PDF standard.
In order to meet the requirement of outputting interactive PDF, the invention combines the data synthesis reading, the content searching of the typesetting file, the label adding of the typesetting file and the multi-format output of the existing XML typesetting, expands on the basis and supports the efficient output. Reading source and target contents from XML label contents, searching and positioning in a typesetting file, adding labels, and outputting interactive PDF; the current existing XML typesetting and multi-format output functions are fully utilized.
Fig. 6 is a flowchart illustrating a PDF file generating method according to a sixth embodiment of the present invention.
As shown in fig. 6, a specific process of a PDF file generation method according to a sixth embodiment of the present invention is as follows:
step 602: the output interactive PDF is a newly added subsystem on the existing xml typesetting engine, and a new Web Service interface is required to be provided for receiving a command sent from the outside;
step 604: obtaining source and destination label contents of the typesetting file through an XML typesetting engine;
1) and acquiring the corresponding XML tagged file of the typesetting file in an XML typesetting system, wherein the file tag format is fixed and the content is simple.
2) This label covers all kinds of content of the required source and destination: references, graphs, DOI types.
Step 606: searching the layout of the source and target label contents;
1) the content is searched by simply distinguishing, selecting and combining the source content type and the destination content type.
The format of the source content is not fixed, the content of the label is different from the content of the layout, the layout of the typesetting file has label omission for beauty, and the XML file of the label completes the omission. For example, the drawing numbers and reference numbers may have chain ellipses, and the connection symbols are not fixed.
For example: references cited in [1] or [1-4, 6], etc.; the chart reference is divided into a plurality of style conditions of Chinese keyword chart English keyword Figure, Table, Fig label connector-, "and blank combination.
2) And (3) by utilizing the existing full-matching search and regular search of the content of the layout file, adopting different methods aiming at different conditions and carrying out reconstruction search on the different methods.
3) And judging whether the search result is correct or not.
The first time, the chart source searches for the connection omission symbol appearing on the recording layout, and Chinese and English and omission patterns are recorded aiming at the chart. For example: the non-numeric characters are determined as the judgment basis after the reference document labels, and whether the source search content is consistent with the layout omission style or not is judged.
Step 608: adding labels to the source and destination layout positions and changing the content style;
and adding corresponding type labels according to the searched position in the last step, if the index is finished in the second character index of the section, and uniformly setting the font style of the label content to blue.
Note: steps 606 and 608 are to search for the added label once, because the label is not occupied in the layout but is significant in the file stream, and this method avoids the next search for position deviation.
Step 610: the source and destination tags of the typeset file are converted into PDF annotation action objects.
1) In the process of outputting PDF, the contents of the source and destination tags of the typesetting file are read firstly.
2) And calculating the area coordinates and the page number of the label content appearing on the layout.
3) The location information of the corresponding PDF is added to the annotation object and the associated action object.
4) And generating an academic paper enhancement PDF (Portable document Format), namely an interaction PDF.
In a seventh embodiment of the present invention, on the basis of any one of the first to fifth embodiments, the step of obtaining the source and destination tags of the typeset file further includes: and acquiring the source and destination tags of the typesetting file through an XML typesetting engine.
In the embodiment, the XML typesetting engine is used for acquiring the source and the destination tags of the typesetting file, so that the formats of the destination tags are consistent, and the content is simple.
An eighth embodiment of the present invention, on the basis of any one of the first to fifth embodiments and the seventh embodiment, further includes, after the step of adding the destination tag at the location of the found source: and adjusting the color of the characters in the target label.
In this embodiment, the color of the text in the destination tag is adjusted to a preset color, that is, the content of the destination tag is highlighted, so as to improve the convenience of browsing the enhanced PDF file.
Specifically, the preset color may be any color, such as: red, yellow, blue, green, etc.
In a ninth embodiment of the present invention, based on any one of the first to fifth embodiments, the seventh embodiment and the eighth embodiment, further, the content of the source and destination tags is any one of the following: references, graphs, DOI types.
In this embodiment, the content of the source and destination tags may be any of a reference, a graph, a DOI type.
A tenth embodiment of the present invention is, on the basis of any one of the first to fifth embodiments and the seventh to ninth embodiments, further, based on the number of the source and the destination tags being plural, after the step of adding the destination tag to the found position of the source is performed on one destination tag, the step of finding the position of the source in the composition file is performed on another source.
In this embodiment, since the layout of the composition file is changed after the destination tag is inserted into the composition file, the location of the next source is searched after the destination tag of one source is inserted, so that the accuracy of the location of the source and the adding location of the destination tag in the whole composition file can be improved.
According to a second aspect of embodiments of the present invention, there is provided a computer apparatus comprising: a memory for storing a computer program; a processor for executing a computer program to implement the method for generating a PDF file provided in any of the above embodiments.
The computer device provided by the present invention includes a processor for executing a computer program to implement the method for generating a PDF file provided in any of the above embodiments, and therefore, all the advantages of the method for generating a PDF file provided in any of the above embodiments are not described herein.
According to a third aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of generating a PDF file as provided in any of the above embodiments.
The computer-readable storage medium provided by the present invention stores a computer program that is executed by a processor to implement the method for generating a PDF file according to any of the above embodiments, and therefore, all the advantages of the method for generating a PDF file according to any of the above embodiments are achieved, which are not described herein.
In the present invention, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A PDF file generation method is characterized by comprising the following steps:
obtaining source and destination labels of the typesetting file;
searching the position of the source in the typesetting file;
adding the destination label at the position of the searched source;
and generating a PDF file according to the typesetting file, the position of the source and the destination label.
2. The method for generating a PDF file according to claim 1,
the step of obtaining the source and destination labels of the typesetting file specifically comprises the following steps:
and acquiring the source and destination tags of the typesetting file through an XML typesetting engine.
3. The method for generating a PDF file according to claim 1,
the step of searching the position of the source in the typesetting file specifically comprises:
performing full matching search and regular search based on the existing content of the typesetting file to search the position of the source;
judging whether the search result is correct or not;
under the condition that the search result is correct, adding the target label at the position of the searched source;
and in the case that the search structure is incorrect, the search is carried out again and/or a prompt is sent out.
4. The method of generating a PDF file according to claim 3,
the step of judging whether the search result is correct specifically includes:
judging whether the characters after the source are non-numeric characters or not, and judging whether the searched content of the source conforms to the omitted pattern of the typesetting file or not;
and if the judgment results are all yes, the search result is correct.
5. The method of generating a PDF file according to claim 4,
after the step of adding the destination tag at the found position of the source, the method further includes:
and adjusting the color of the characters in the target label.
6. The PDF file generation method according to any of claims 1 to 5,
the step of generating a PDF file according to the typesetting file, the source location, and the destination tag specifically includes:
calculating the region coordinates and page numbers of the typesetting file with the target label;
adding the region coordinates and the page number of the typesetting file corresponding to the target label to an annotation object, and associating the action object of the target label;
and generating the PDF file.
7. The PDF file generation method according to any of claims 1 to 5,
the content of the source and destination tags is any of: references, graphs, DOI types.
8. The PDF file generation method according to any of claims 1 to 5,
based on the number of the source and the destination label being multiple, after the step of adding the destination label at the found position of the source is performed on one destination label, the step of searching the position of the source in the typesetting file is performed on the other source.
9. A computer device, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the PDF file generation method of any one of claims 1 to 8.
10. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the PDF file generating method according to any one of claims 1 to 8.
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| CN104111922A (en) * | 2013-04-16 | 2014-10-22 | 北大方正集团有限公司 | Processing method and device of streaming document |
| CN107153635A (en) * | 2016-03-04 | 2017-09-12 | 《中国学术期刊（光盘版）》电子杂志社有限公司 | It is a kind of to automatically extract the method and system that paper quotes bibliography after content and correspondence text |
| CN108052490A (en) * | 2017-12-29 | 2018-05-18 | 北京仁和汇智信息技术有限公司 | A kind of online methodology of composition of XML papers and device |
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