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<body>
<pre><code>jsoncons::csv::csv_serializer
</code></pre>

<p>The <code>csv_serializer</code> class is an instantiation of the <code>basic_csv_serializer</code> class template that uses <code>char</code> as the character type.  It implements <a href="json_output_handler">json_output_handler</a> and supports formatting a JSON value as a <a href="http://tools.ietf.org/html/rfc4180">CSV file</a>.</p>

<h3>Header</h3>

<pre><code>#include "jsoncons_ext/csv/csv_serializer.hpp"
</code></pre>

<h3>Constructors</h3>

<pre><code>csv_serializer(std::ostream&amp; os)
</code></pre>

<p>Constructs a <code>csv_serializer</code> that is associated with an output stream<br>
<code>os</code>. Uses default <a href="csv_parameters">csv_parameters</a>.<br>
You must ensure that the output stream exists as long as does <code>csv_serializer</code>, as <code>json_serializer</code> holds a pointer to but does not own this object.</p>

<pre><code>csv_serializer(std::ostream&amp; os,
               const csv_parameters&amp; params)
</code></pre>

<p>Constructs a <code>csv_serializer</code> that is associated with an output stream<br>
<code>os</code> and <a href="csv_parameters">csv_parameters</a>.<br>
You must ensure that the output stream exists as long as does <code>csv_serializer</code>, as <code>json_serializer</code> holds a pointer to but does not own this object.</p>

<h3>Member functions</h3>

<h3>Destructor</h3>

<pre><code>virtual ~json_serializer()
</code></pre>

<h3>Examples</h3>

<h3>Serializing an array of json values to a comma delimted file</h3>

<h4>JSON input file</h4>

<pre><code>[
    ["country_code","name"],
    ["ABW","ARUBA"],
    ["ATF","FRENCH SOUTHERN TERRITORIES, D.R. OF"],
    ["VUT","VANUATU"],
    ["WLF","WALLIS &amp; FUTUNA ISLANDS"]
]
</code></pre>

<p>Note </p>

<ul>
<li>The third array element has a value that contains a comma, in the CSV file this value will be quoted.</li>
</ul>

<h4>Serializing the comma delimited file with csv_serializer</h4>

<pre><code>std::string in_file = "input/countries.json";
std::ifstream is(in_file);

json_deserializer handler;
json_reader reader(is,handler);
reader.read_next();
json countries = handler.get_result();

csv_serializer serializer(std::cout);

countries.to_stream(serializer);
</code></pre>

<h4>Output</h4>

<pre><code>country_code,name
ABW,ARUBA
ATF,"FRENCH SOUTHERN TERRITORIES, D.R. OF"
VUT,VANUATU
WLF,WALLIS &amp; FUTUNA ISLANDS
</code></pre>

<h3>Serializing an array of json objects to a tab delimted file</h3>

<h4>JSON input file</h4>

<pre><code>[
    {
        "dept":"sales",
        "employee-name":"Smith, Matthew",
        "employee-no":"00000001",
        "note":"",
        "salary":"150,000.00"
    },
    {
        "dept":"sales",
        "employee-name":"Brown, Sarah",
        "employee-no":"00000002",
        "note":"",
        "salary":"89,000.00"
    },
    {
        "dept":"finance",
        "employee-name":"Oberc, Scott",
        "employee-no":"00000003",
        "salary":"110,000.00"
    },
    {
        "dept":"sales",
        "employee-name":"Scott, Colette",
        "employee-no":"00000004",
        "note":"\"Exemplary\" employee\nDependable, trustworthy",
        "comment":"Team player",
        "salary":"75,000.00"
    }
]
</code></pre>

<p>Note </p>

<ul>
<li>The names in the first object in the array will be used for the header row of the CSV file</li>
<li>The fourth object has a <code>note</code> member whose value contains escaped quotes and an escaped new line character, in the CSV file, this value will be quoted, and it will contain a new line character and escaped quotes.</li>
</ul>

<h4>Reading the tab delimited file with csv_serializer</h4>

<pre><code>std::string in_file = "input/employees.json";
std::ifstream is(in_file);

json_deserializer handler;
csv_parameters params;
params.field_delimiter = '\t';

json_reader reader(is,handler);
reader.read_next();
json employees = handler.get_result();

csv_serializer serializer(std::cout,params);

employees.to_stream(serializer);
</code></pre>

<h4>Tab delimited output file</h4>

<pre><code>dept    employee-name   employee-no     note    salary
sales   Smith, Matthew  00000001                150,000.00
sales   Brown, Sarah    00000002                89,000.00
finance Oberc, Scott    00000003                110,000.00
sales   Scott, Colette  00000004        ""Exemplary"" employee
Dependable, trustworthy 75,000.00
</code></pre>
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