/// <remarks>
/// Affected by run-time quoting (data are unqouted before written)
/// (<see cref="LocalConfiguration.VariablesSection.QuoteRuntimeVariables"/>).
/// </remarks>
public static int fputcsv(Context ctx, PhpResource handle, PhpArray fields, char delimiter = DefaultCsvDelimiter, char enclosure = DefaultCsvEnclosure)
{
PhpStream stream = PhpStream.GetValid(handle, FileAccess.Write);
if (stream == null || !stream.CanWrite)
{
return(-1);
}
char[] special_chars = { delimiter, ' ', '\\', '\t', '\r', '\n' };
string str_enclosure = enclosure.ToString();
string str_delimiter = delimiter.ToString();
int initial_position = stream.WritePosition;
var enumerator = fields.GetFastEnumerator();
while (enumerator.MoveNext())
{
var str_field = StringUtils.StripCSlashes(enumerator.CurrentValue.ToString(ctx));
if (stream.WritePosition > initial_position)
{
stream.WriteString(str_delimiter);
}
int special_char_index = str_field.IndexOfAny(special_chars);
int enclosure_index = str_field.IndexOf(enclosure);
if (special_char_index >= 0 || enclosure_index >= 0)
{
stream.WriteString(str_enclosure);
if (enclosure_index >= 0)
{
// escapes enclosure characters:
int start = 0;
for (; ;)
{
// writes string starting after the last enclosure and ending by the next one:
stream.WriteString(str_field.Substring(start, enclosure_index - start + 1));
stream.WriteString(str_enclosure);
start = enclosure_index + 1;
if (start >= str_field.Length)
{
break;
}
enclosure_index = str_field.IndexOf(enclosure, start);
if (enclosure_index < 0)
{
// remaining substring:
stream.WriteString(str_field.Substring(start));
break;
}
}
}
else
{
stream.WriteString(str_field);
}
stream.WriteString(str_enclosure);
}
else
{
stream.WriteString(str_field);
}
}
stream.WriteString("\n");
return((initial_position == -1) ? stream.WritePosition : stream.WritePosition - initial_position);
}
