1YAML::PP::Schema::IncluUdsee(r3)Contributed Perl DocumenYtAaMtLi:o:nPP::Schema::Include(3)
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NAME

6       YAML::PP::Schema::Include - Include YAML files
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SYNOPSIS

9           # /path/to/file.yaml
10           # ---
11           # included: !include include/file2.yaml
12
13           # /path/to/include/file2.yaml
14           # ---
15           # a: b
16
17           my $include = YAML::PP::Schema::Include->new;
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19           my $yp = YAML::PP->new( schema => ['JSON', $include] );
20           # we need the original YAML::PP object for getting the current filename
21           # and for loading another file
22           $include->yp($yp);
23
24           my ($data) = $yp->load_file("/path/to/file.yaml");
25
26           # The result will be:
27           $data = {
28               included => { a => 'b' }
29           };
30
31       Allow absolute filenames and upwards '..':
32
33           my $include = YAML::PP::Schema::Include->new(
34               allow_absolute => 1, # default: 0
35           );
36
37       Specify paths to search for includes:
38
39           my @include_paths = ("/path/to/include/yaml/1", "/path/to/include/yaml/2");
40           my $include = YAML::PP::Schema::Include->new(
41               paths => \@include_paths,
42           );
43           my $yp = YAML::PP->new( schema => ['JSON', $include] );
44           $include->yp($yp);
45
46           # /path/to/include/yaml/1/file1.yaml
47           # ---
48           # a: b
49
50           my $yaml = <<'EOM';
51           - included: !include file1.yaml
52           EOM
53           my ($data) = $yp->load_string($yaml);
54

DESCRIPTION

56       This plugin allows you to split a large YAML file into smaller ones.
57       You can then include these files with the "!include" tag.
58
59       It will search for the specified filename relative to the currently
60       processed filename.
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62       You can also specify the paths where to search for files to include. It
63       iterates through the paths and returns the first filename that exists.
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65       By default, only relative paths are allowed. Any "../" in the path will
66       be removed. You can change that behaviour by setting the option
67       "allow_absolute" to true.
68
69       If the included file contains more than one document, only the first
70       one will be included.
71
72       I will probably add a possibility to return all documents as an
73       arrayref.
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75       The included YAML file will be loaded by creating a new YAML::PP object
76       with the schema from the existing object. This way you can recursively
77       include files.
78
79       You can even reuse the same include via an alias:
80
81           ---
82           invoice:
83               shipping address: &address !include address.yaml
84               billing address: *address
85
86       Circular includes will be detected, and will be fatal.
87
88       It's possible to specify what to do with the included file:
89
90           my $include = YAML::PP::Schema::Include->new(
91               loader => sub {
92                   my ($yp, $filename);
93                   if ($filename =~ m/\.txt$/) {
94                       # open file and just return text
95                   }
96                   else {
97                       # default behaviour
98                       return $yp->load_file($filename);
99                   }
100               },
101           );
102
103       For example, RAML defines an "!include" tag which depends on the file
104       content. If it contains a special RAML directive, it will be loaded as
105       YAML, otherwise the content of the file will be included as a string.
106
107       So with this plugin you are able to read RAML specifications.
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111perl v5.32.0                      2020-09-11      YAML::PP::Schema::Include(3)
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