xref: /freebsd/contrib/libxo/xo/xo.1 (revision 49b49cda41feabe3439f7318e8bf40e3896c7bf4)
1.\" #
2.\" # Copyright (c) 2014, Juniper Networks, Inc.
3.\" # All rights reserved.
4.\" # This SOFTWARE is licensed under the LICENSE provided in the
5.\" # ../Copyright file. By downloading, installing, copying, or
6.\" # using the SOFTWARE, you agree to be bound by the terms of that
7.\" # LICENSE.
8.\" # Phil Shafer, July 2014
9.\"
10.Dd December 4, 2014
11.Dt XO 1
12.Os
13.Sh NAME
14.Nm xo
15.Nd emit formatted output based on format string and arguments
16.Sh SYNOPSIS
17.Nm
18.Op Fl options
19.Op Ar argument...
20.Sh DESCRIPTION
21The
22.Nm
23utility allows command line access to the functionality of
24the
25.Nm libxo
26library.
27Using
28.Nm ,
29shell scripts can emit
30.Em XML ,
31.Em JSON ,
32or
33.Em HTML
34using the same commands that emit text output.
35.Pp
36.Bl -tag -width "12345678901234567"
37.It Fl "-close <path>"
38Close tags for the given path
39.It Fl "-depth <num>"
40Set the depth for pretty printing
41.It Fl "-help"
42Display this help text
43.It Fl "-html OR -H"
44Generate HTML output
45.It Fl "-json OR -J"
46Generate JSON output
47.It Fl "-leading-xpath <path>"
48Add a prefix to generated XPaths (HTML)
49.It Fl "-open <path>"
50Open tags for the given path
51.It Fl "-pretty OR -p"
52Make 'pretty' output (add indent, newlines)
53.It Fl "-style <style>"
54Generate given style (xml, json, text, html)
55.It Fl "-text OR -T"
56Generate text output (the default style)
57.It Fl "-version"
58Display version information
59.It Fl "-warn OR -W"
60Display warnings in text on stderr
61.It Fl "-warn-xml"
62Display warnings in xml on stdout
63.It Fl "-wrap <path>"
64Wrap output in a set of containers
65.It Fl "-xml OR -X"
66Generate XML output
67.It Fl "-xpath"
68Add XPath data to HTML output
69.El
70.Pp
71The
72.Nm
73utility accepts a format string suitable for
74.Xr xo_emit 3
75and a set of zero or more arguments used to supply data for that string.
76.Bd -literal -offset indent
77    xo "The {k:name} weighs {:weight/%d} pounds.\\n" fish 6
78
79  TEXT:
80    The fish weighs 6 pounds.
81  XML:
82    <name>fish</name>
83    <weight>6</weight>
84  JSON:
85    "name": "fish",
86    "weight": 6
87  HTML:
88    <div class="line">
89      <div class="text">The </div>
90      <div class="data" data-tag="name">fish</div>
91      <div class="text"> weighs </div>
92      <div class="data" data-tag="weight">6</div>
93      <div class="text"> pounds.</div>
94    </div>
95.Ed
96.Pp
97The
98.Fl "-wrap <path>"
99option can be used to wrap emitted content in a
100specific hierarchy.
101The path is a set of hierarchical names separated
102by the '/' character.
103.Bd -literal -offset indent
104    xo --wrap top/a/b/c '{:tag}' value
105
106  XML:
107    <top>
108      <a>
109        <b>
110          <c>
111            <tag>value</tag>
112          </c>
113        </b>
114      </a>
115    </top>
116  JSON:
117    "top": {
118      "a": {
119        "b": {
120          "c": {
121            "tag": "value"
122          }
123        }
124      }
125    }
126.Ed
127.Pp
128The
129.Fl "\-open <path>"
130and
131.Fl "\-close <path>"
132can be used to emit
133hierarchical information without the matching close and open
134tag.
135This allows a shell script to emit open tags, data, and
136then close tags.
137The
138.Fl \-depth
139option may be used to set the
140depth for indentation.
141The
142.Fl "\-leading-xpath"
143may be used to
144prepend data to the XPath values used for HTML output style.
145.Bd -literal -offset indent
146    #!/bin/sh
147    xo --open top/data
148    xo --depth 2 '{tag}' value
149    xo --close top/data
150  XML:
151    <top>
152      <data>
153        <tag>value</tag>
154      </data>
155    </top>
156  JSON:
157    "top": {
158      "data": {
159        "tag": "value"
160      }
161    }
162.Ed
163.Sh EXAMPLE
164.Bd -literal
165  % xo 'The {:product} is {:status}\n' stereo "in route"
166  The stereo is in route
167  % xo -p -X 'The {:product} is {:status}\n' stereo "in route"
168  <product>stereo</product>
169  <status>in route</status>
170.Ed
171.Sh SEE ALSO
172.Xr libxo 3 ,
173.Xr xo_emit 3
174