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/* This file contains the capmod method, which is a GNU extension to
libplot. It sets a drawing attribute: the cap mode used when drawing
subsequent lines and polylines. */
#include "sys-defines.h"
#include "plot.h"
#include "extern.h"
int
#ifdef _HAVE_PROTOS
_m_capmod (const char *s)
#else
_m_capmod (s)
const char *s;
#endif
{
char *nl;
if (!_plotter->open)
{
_plotter->error ("capmod: invalid operation");
return -1;
}
if (_plotter->outstream)
{
/* null pointer handled specially */
if (s == NULL)
s = "(null)";
if ((nl = strchr (s, '\n')))
*nl = '\0'; /* don't grok multiline arg strings */
fprintf (_plotter->outstream, "%c%s\n",
CAPMOD, s);
}
/* invoke generic method */
return _g_capmod (s);
}
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