OpenSystemsDevelopment / qpdf

Commit 527810e939816190e491db7c0a308100d255da85

Authored by m-holger
Committed by Jay Berkenbilt
1 parent 56b4d5a6

Tidy pdf-attach-file example

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Showing 1 changed file with 14 additions and 6 deletions
examples/pdf-attach-file.cc
  View file @527810e
... ... @@ -11,7 +11,8 @@
11 11 // This example attaches a file to an input file, adds a page to the
12 12 // beginning of the file that includes a file attachment annotation,
13 13 // and writes the result to an output file. It also illustrates a
14   -// number of new API calls that were added in qpdf 10.2.
  14 +// number of new API calls that were added in qpdf 10.2 as well as
  15 +// the use of the qpdf literal syntax introduced in qpdf 10.6.
15 16 //
16 17  
17 18 static char const* whoami = 0;
... ... @@ -24,8 +25,8 @@ static void usage(std::string const& msg)
24 25 << " --infile infile.pdf" << std::endl
25 26 << " --outfile outfile.pdf" << std::endl
26 27 << " --attachment attachment" << std::endl
27   - << " [ --password infile-password ]" << std::endl
28   - << " [ --mimetype attachment mime type ]" << std::endl;
  28 + << " [--password infile-password]" << std::endl
  29 + << " [--mimetype attachment mime type]" << std::endl;
29 30 exit(2);
30 31 }
31 32  
... ... @@ -90,9 +91,16 @@ static void process(char const* infilename, char const* password,
90 91 "0 0 20 20 re\n"
91 92 "S\n");
92 93 auto apdict = ap.getDict();
93   - apdict.replaceKey("/Resources", QPDFObjectHandle::newDictionary());
94   - apdict.replaceKey("/Type", QPDFObjectHandle::newName("/XObject"));
95   - apdict.replaceKey("/Subtype", QPDFObjectHandle::newName("/Form"));
  94 +
  95 + // The following four lines demonstrate the use of the qpdf literal syntax
  96 + // introduced in qpdf 10.6. They could have been written as:
  97 + // apdict.replaceKey("/Resources", QPDFObjectHandle::newDictionary());
  98 + // apdict.replaceKey("/Type", QPDFObjectHandle::newName("/XObject"));
  99 + // apdict.replaceKey("/Subtype", QPDFObjectHandle::newName("/Form"));
  100 + // apdict.replaceKey("/BBox", QPDFObjectHandle::parse("[ 0 0 20 20 ]"));
  101 + apdict.replaceKey("/Resources", "<< >>"_qpdf"");
  102 + apdict.replaceKey("/Type", "/XObject"_qpdf);
  103 + apdict.replaceKey("/Subtype", "/Form"_qpdf);
96 104 apdict.replaceKey("/BBox", "[ 0 0 20 20 ]"_qpdf);
97 105 auto annot = q.makeIndirectObject(
98 106 QPDFObjectHandle::parse(
... ...