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Make "objects" and "pages" consistent in JSON output
This commit is contained in:
Jay Berkenbilt
parent
6b576797cd
commit
8b25de24c9
11
ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2022-05-04 Jay Berkenbilt <ejb@ql.org>
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* json v1 output: make "pages" and "objects" consistent.
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Previously, "objects" always reflected the objects exactly as they
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appeared in the original file, while "pages" reflected objects
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after repair of the pages tree. This could be misleading. Now, if
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"pages" is specified, "objects" shows the effects of repairing the
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page tree, and if not, it doesn't. This makes no difference for
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correct PDF files that don't have problems in the pages tree. JSON
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v2 will behave in a similar way.
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2022-05-03 Jay Berkenbilt <ejb@ql.org>
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* Add new Pipeline class Pl_String which appends to a std::string&
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@ -511,6 +511,7 @@
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"unfilterable",
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"unparse",
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"unpickling",
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"unrepaired",
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"unretrieved",
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"unversioned",
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"upages",
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@ -1618,15 +1618,7 @@ QPDFJob::doJSON(QPDF& pdf)
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bool all_keys = m->json_keys.empty();
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// The list of selectable top-level keys id duplicated in the
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// following places: job.yml, QPDFJob::json_schema, and
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// QPDFJob::doJSON. We do objects and objectinfo first so they
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// reflect the original file without any side effects caused by
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// other operations, such as repairing the pages tree.
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if (all_keys || m->json_keys.count("objects")) {
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doJSONObjects(pdf, j);
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}
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if (all_keys || m->json_keys.count("objectinfo")) {
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doJSONObjectinfo(pdf, j);
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}
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// QPDFJob::doJSON.
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if (all_keys || m->json_keys.count("pages")) {
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doJSONPages(pdf, j);
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}
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@ -1646,6 +1638,17 @@ QPDFJob::doJSON(QPDF& pdf)
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doJSONAttachments(pdf, j);
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}
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// We do objects and objectinfo last so their information is
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// consistent with repairing the page tree. To see the original
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// file with any page tree problems and the page tree not
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// flattened, select objects/objectinfo without other keys.
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if (all_keys || m->json_keys.count("objects")) {
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doJSONObjects(pdf, j);
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}
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if (all_keys || m->json_keys.count("objectinfo")) {
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doJSONObjectinfo(pdf, j);
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}
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// Check against schema
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JSON schema = json_schema(&m->json_keys);
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@ -147,6 +147,16 @@ For the most part, the built-in JSON help tells you everything you need
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to know about the JSON format, but there are a few non-obvious things to
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be aware of:
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- If a PDF file has certain types of errors in its pages tree (such as
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page objects that are direct or multiple pages sharing the same
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object ID), qpdf will automatically repair the pages tree. If you
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specify ``"objects"`` and/or ``"objectinfo"`` without any other
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keys, you will see the original pages tree without any corrections.
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If you specify any of keys that require page tree traversal (for
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example, ``"pages"``, ``"outlines"``, or ``"pagelabel"``), then
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``"objects"`` and ``"objectinfo"`` will show the repaired page tree
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so that object references will be consistent throughout the file.
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- While qpdf guarantees that keys present in the help will be present
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in the output, those fields may be null or empty if the information
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is not known or absent in the file. Also, if you specify
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@ -125,6 +125,13 @@ For a detailed list of changes, please see the file
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- Other changes
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- In JSON v1 mode, the ``"objects"`` key now reflects the repaired
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pages tree if ``"pages"`` (or any other key that has the side
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effect of repairing the page tree) is specified. To see the
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original objects with any unrepaired page tree errors, specify
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``"objects"`` and/or ``"objectinfo"`` by themselves. This is
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consistent with how JSON v2 behaves.
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- A new chapter on contributing to qpdf has been added to the
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documentation. See :ref:`contributing`.
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@ -2829,7 +2829,7 @@ $td->runtest("check output",
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show_ntests();
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# ----------
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$td->notify("--- Page Tree Issues ---");
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$n_tests += 9;
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$n_tests += 11;
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$td->runtest("linearize duplicated pages",
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{$td->COMMAND =>
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@ -2864,14 +2864,22 @@ $td->runtest("show direct pages",
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$td->NORMALIZE_NEWLINES);
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# Json mode for direct and duplicated pages illustrates that the
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# "objects" section still shows the original objects before correction
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# but the "pages" section shows the pages with their new object
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# numbers.
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# "objects" section the original objects before correction when
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# "pages" is not output but after correct when it is.# numbers.
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foreach my $f (qw(page_api_2 direct-pages))
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{
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$td->runtest("json for $f",
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{$td->COMMAND => "qpdf --json=latest $f.pdf"},
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{$td->FILE => "$f-json.out", $td->EXIT_STATUS => 0},
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$td->runtest("json for $f (objects only)",
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{$td->COMMAND =>
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"qpdf --json=latest $f.pdf" .
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" --json-key=objects --json-key=objectinfo"},
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{$td->FILE => "$f-json-objects.out", $td->EXIT_STATUS => 0},
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$td->NORMALIZE_NEWLINES);
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$td->runtest("json for $f (with pages)",
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{$td->COMMAND =>
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"qpdf --json=latest $f.pdf" .
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" --json-key=objects --json-key=objectinfo" .
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" --json-key=pages"},
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{$td->FILE => "$f-json-pages.out", $td->EXIT_STATUS => 0},
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$td->NORMALIZE_NEWLINES);
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}
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@ -1,37 +1,4 @@
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{
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"acroform": {
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"fields": [],
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"hasacroform": false,
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"needappearances": false
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},
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"attachments": {},
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"encrypt": {
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"capabilities": {
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"accessibility": true,
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"extract": true,
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"moddifyannotations": true,
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"modify": true,
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"modifyassembly": true,
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"modifyforms": true,
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"modifyother": true,
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"printhigh": true,
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"printlow": true
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},
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"encrypted": false,
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"ownerpasswordmatched": false,
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"parameters": {
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"P": 0,
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"R": 0,
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"V": 0,
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"bits": 0,
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"filemethod": "none",
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"key": null,
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"method": "none",
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"streammethod": "none",
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"stringmethod": "none"
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},
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"userpasswordmatched": false
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},
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"objectinfo": {
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"1 0 R": {
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"stream": {
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@ -145,30 +112,6 @@
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"/Size": 7
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}
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},
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"outlines": [],
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"pagelabels": [],
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"pages": [
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{
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"contents": [
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"3 0 R"
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],
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"images": [],
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"label": null,
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"object": "7 0 R",
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"outlines": [],
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"pageposfrom1": 1
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},
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{
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"contents": [
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"3 0 R"
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],
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"images": [],
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"label": null,
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"object": "8 0 R",
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"outlines": [],
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"pageposfrom1": 2
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}
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],
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"parameters": {
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"decodelevel": "generalized"
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},
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157
qpdf/qtest/qpdf/direct-pages-json-pages.out
Normal file
157
qpdf/qtest/qpdf/direct-pages-json-pages.out
Normal file
@ -0,0 +1,157 @@
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{
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"objectinfo": {
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"1 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"2 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"3 0 R": {
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"stream": {
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"filter": null,
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"is": true,
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"length": 44
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}
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},
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"4 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"5 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"6 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"7 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"8 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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}
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},
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"objects": {
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"1 0 R": {
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"/Pages": "2 0 R",
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"/Type": "/Catalog"
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},
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"2 0 R": {
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"/Count": 2,
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"/Kids": [
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"7 0 R",
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"8 0 R"
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],
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"/Type": "/Pages"
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},
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"3 0 R": {
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"/Length": "4 0 R"
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},
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"4 0 R": 44,
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"5 0 R": {
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"/BaseFont": "/Helvetica",
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"/Encoding": "/WinAnsiEncoding",
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"/Name": "/F1",
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"/Subtype": "/Type1",
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"/Type": "/Font"
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},
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"6 0 R": [
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"/PDF",
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"/Text"
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],
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"7 0 R": {
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"/Contents": "3 0 R",
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"/MediaBox": [
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0,
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0,
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612,
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792
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],
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"/Parent": "2 0 R",
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"/Resources": {
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"/Font": {
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"/F1": "5 0 R"
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},
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"/ProcSet": "6 0 R"
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},
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"/Type": "/Page"
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},
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"8 0 R": {
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"/Contents": "3 0 R",
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"/MediaBox": [
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0,
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0,
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612,
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792
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],
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"/Parent": "2 0 R",
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"/Resources": {
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"/Font": {
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"/F1": "5 0 R"
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},
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"/ProcSet": "6 0 R"
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},
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"/Type": "/Page"
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},
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"trailer": {
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"/ID": [
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"\u0013#¥fi|WzfsU…©6ŸÎ<",
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"7,¿DöÛ‹«`Ù&<\u000f\u000bÒj"
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],
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"/Root": "1 0 R",
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"/Size": 7
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}
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},
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"pages": [
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{
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"contents": [
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"3 0 R"
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],
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"images": [],
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"label": null,
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"object": "7 0 R",
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"outlines": [],
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"pageposfrom1": 1
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},
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{
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"contents": [
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"3 0 R"
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],
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"images": [],
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"label": null,
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"object": "8 0 R",
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"outlines": [],
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"pageposfrom1": 2
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}
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],
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"parameters": {
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"decodelevel": "generalized"
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},
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"version": 1
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}
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160
qpdf/qtest/qpdf/page_api_2-json-objects.out
Normal file
160
qpdf/qtest/qpdf/page_api_2-json-objects.out
Normal file
@ -0,0 +1,160 @@
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{
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"objectinfo": {
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"1 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"10 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"2 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"3 0 R": {
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"stream": {
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"4 0 R": {
|
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"stream": {
|
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"filter": null,
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"is": false,
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"length": null
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}
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},
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"5 0 R": {
|
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"stream": {
|
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"filter": null,
|
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"is": false,
|
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"length": null
|
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}
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},
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"6 0 R": {
|
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"stream": {
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"filter": null,
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"is": true,
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"length": 47
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}
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},
|
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"7 0 R": {
|
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"stream": {
|
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"filter": null,
|
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"is": false,
|
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"length": null
|
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}
|
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},
|
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"8 0 R": {
|
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"stream": {
|
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"filter": null,
|
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"is": false,
|
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"length": null
|
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}
|
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},
|
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"9 0 R": {
|
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"stream": {
|
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"filter": null,
|
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"is": true,
|
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"length": 47
|
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}
|
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}
|
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},
|
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"objects": {
|
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"1 0 R": {
|
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"/Pages": "3 0 R",
|
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"/Type": "/Catalog"
|
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},
|
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"10 0 R": 47,
|
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"2 0 R": {
|
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"/CreationDate": "D:20120621124041",
|
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"/Producer": "Apex PDFWriter"
|
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},
|
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"3 0 R": {
|
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"/Count": 3,
|
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"/Kids": [
|
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"4 0 R",
|
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"4 0 R",
|
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"5 0 R"
|
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],
|
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"/Type": "/Pages"
|
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},
|
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"4 0 R": {
|
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"/Contents": "6 0 R",
|
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"/MediaBox": [
|
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0,
|
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0,
|
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612,
|
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792
|
||||
],
|
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"/Parent": "3 0 R",
|
||||
"/Resources": {
|
||||
"/Font": {
|
||||
"/F1": "8 0 R"
|
||||
},
|
||||
"/ProcSet": [
|
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"/PDF",
|
||||
"/Text"
|
||||
]
|
||||
},
|
||||
"/Type": "/Page"
|
||||
},
|
||||
"5 0 R": {
|
||||
"/Contents": "9 0 R",
|
||||
"/MediaBox": [
|
||||
0,
|
||||
0,
|
||||
612,
|
||||
792
|
||||
],
|
||||
"/Parent": "3 0 R",
|
||||
"/Resources": {
|
||||
"/Font": {
|
||||
"/F1": "8 0 R"
|
||||
},
|
||||
"/ProcSet": [
|
||||
"/PDF",
|
||||
"/Text"
|
||||
]
|
||||
},
|
||||
"/Type": "/Page"
|
||||
},
|
||||
"6 0 R": {
|
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"/Length": "7 0 R"
|
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},
|
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"7 0 R": 47,
|
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"8 0 R": {
|
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"/BaseFont": "/Times-Roman",
|
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"/Encoding": "/WinAnsiEncoding",
|
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"/Subtype": "/Type1",
|
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"/Type": "/Font"
|
||||
},
|
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"9 0 R": {
|
||||
"/Length": "10 0 R"
|
||||
},
|
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"trailer": {
|
||||
"/ID": [
|
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"û˘·ƒÿ{5⁄\u0005Ú−S*º‘o",
|
||||
"÷\u0017ž³QY¿ÔÀ\u000f\u0012−¼ý˜\u0002"
|
||||
],
|
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"/Info": "2 0 R",
|
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"/Root": "1 0 R",
|
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"/Size": 11
|
||||
}
|
||||
},
|
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"parameters": {
|
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"decodelevel": "generalized"
|
||||
},
|
||||
"version": 1
|
||||
}
|
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@ -1,37 +1,4 @@
|
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{
|
||||
"acroform": {
|
||||
"fields": [],
|
||||
"hasacroform": false,
|
||||
"needappearances": false
|
||||
},
|
||||
"attachments": {},
|
||||
"encrypt": {
|
||||
"capabilities": {
|
||||
"accessibility": true,
|
||||
"extract": true,
|
||||
"moddifyannotations": true,
|
||||
"modify": true,
|
||||
"modifyassembly": true,
|
||||
"modifyforms": true,
|
||||
"modifyother": true,
|
||||
"printhigh": true,
|
||||
"printlow": true
|
||||
},
|
||||
"encrypted": false,
|
||||
"ownerpasswordmatched": false,
|
||||
"parameters": {
|
||||
"P": 0,
|
||||
"R": 0,
|
||||
"V": 0,
|
||||
"bits": 0,
|
||||
"filemethod": "none",
|
||||
"key": null,
|
||||
"method": "none",
|
||||
"streammethod": "none",
|
||||
"stringmethod": "none"
|
||||
},
|
||||
"userpasswordmatched": false
|
||||
},
|
||||
"objectinfo": {
|
||||
"1 0 R": {
|
||||
"stream": {
|
||||
@ -47,6 +14,13 @@
|
||||
"length": null
|
||||
}
|
||||
},
|
||||
"11 0 R": {
|
||||
"stream": {
|
||||
"filter": null,
|
||||
"is": false,
|
||||
"length": null
|
||||
}
|
||||
},
|
||||
"2 0 R": {
|
||||
"stream": {
|
||||
"filter": null,
|
||||
@ -110,6 +84,26 @@
|
||||
"/Type": "/Catalog"
|
||||
},
|
||||
"10 0 R": 47,
|
||||
"11 0 R": {
|
||||
"/Contents": "6 0 R",
|
||||
"/MediaBox": [
|
||||
0,
|
||||
0,
|
||||
612,
|
||||
792
|
||||
],
|
||||
"/Parent": "3 0 R",
|
||||
"/Resources": {
|
||||
"/Font": {
|
||||
"/F1": "8 0 R"
|
||||
},
|
||||
"/ProcSet": [
|
||||
"/PDF",
|
||||
"/Text"
|
||||
]
|
||||
},
|
||||
"/Type": "/Page"
|
||||
},
|
||||
"2 0 R": {
|
||||
"/CreationDate": "D:20120621124041",
|
||||
"/Producer": "Apex PDFWriter"
|
||||
@ -118,7 +112,7 @@
|
||||
"/Count": 3,
|
||||
"/Kids": [
|
||||
"4 0 R",
|
||||
"4 0 R",
|
||||
"11 0 R",
|
||||
"5 0 R"
|
||||
],
|
||||
"/Type": "/Pages"
|
||||
@ -186,8 +180,6 @@
|
||||
"/Size": 11
|
||||
}
|
||||
},
|
||||
"outlines": [],
|
||||
"pagelabels": [],
|
||||
"pages": [
|
||||
{
|
||||
"contents": [
|
||||
Loading…
Reference in New Issue
Block a user