Text output commands sequencing for pdf documents

A computing apparatus comprising:

• a memory to store instructions;
• and
• a processing device, operatively coupled to the memory, to execute the instructions, wherein the processing device is to:
• receive, by the processing device, a document comprising a plurality of text output commands in a text layer, wherein each text output command is to render one or more glyphs on a display device;
• identify, using the plurality of text output commands in the text layer, a set of text output commands for a page of a plurality of pages of the document;
• determine a logical structure of the page of the document, wherein the logical structure of the page comprises a plurality of blocks of content that cause an order of the set of text output commands in the text layer to differ from a reading order of the page;
• determine an orientation of text in the plurality of blocks of content;
• determine, by the processing device, an ordered sequence of the set of text output commands for the page based on the orientation of text, wherein the ordered sequence reflects the reading order within each of the plurality of blocks of content;
• generate, by the processing device, a modified text layer for the document, wherein the modified text layer comprises the set of text output commands in the ordered sequence;
• and
• provide, by the processing device, the modified text layer to cause the display device to render a plurality of glyphs corresponding to the set of text output commands in the ordered sequence.

A non-transitory computer readable storage medium, having instructions stored therein, which when executed by a processing device of a computer system, cause the processing device to perform operations comprising:

• receiving, by the processing device, a document comprising a plurality of text output commands in a text layer, wherein each text output command is to render one or more glyphs on a display device;
• identifying, using the plurality of text output commands in the text layer, a set of text output commands for a page of a plurality of pages of the document;
• determining a logical structure of the page of the document, wherein the logical structure of the page comprises a plurality of blocks of content that cause an order of the set of text output commands in the text layer to differ from a reading order of the page;
• determining an orientation of text in the plurality of blocks of content;
• determining, by the processing device, an ordered sequence of the set of text output commands for the page based on the orientation of text, wherein the ordered sequence reflects the reading order within each of the plurality of blocks of content;
• generating, by the processing device, a modified text layer for the document, wherein the modified text layer comprises the set of text output commands in the ordered sequence;
• and
• providing, by the processing device, the modified text layer to cause the display device to render a plurality of glyphs corresponding to the set of text output commands in the ordered sequence.