qse/samples/sed/sed02.c

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#include <qse/sed/stdsed.h>
#include <qse/cmn/main.h>
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#include <qse/si/sio.h>
#include "sed00.h"
static int sed_main (int argc, qse_char_t* argv[])
{
qse_sed_t* sed = QSE_NULL;
qse_sed_iostd_t in[2];
qse_sed_iostd_t out;
int ret = -1;
if (argc != 3)
{
qse_fprintf (QSE_STDERR, QSE_T("USAGE: %s command-string input-string\n"), argv[0]);
return -1;
}
/* create the sed object */
sed = qse_sed_openstd (0, QSE_NULL);
if (sed == QSE_NULL)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: cannot open sed\n"));
goto oops;
}
/* compile the command string */
if (qse_sed_compstdstr (sed, argv[1]) <= -1)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_sed_geterrmsg(sed));
goto oops;
}
/* arrange to use the second argument as input data */
in[0].type = QSE_SED_IOSTD_STR;
in[0].u.str.ptr = argv[2];
in[0].u.str.len = qse_strlen (argv[2]);
in[1].type = QSE_SED_IOSTD_NULL;
/* indicate that the output should be placed in a
* dynamically allocated memory chunk */
out.type = QSE_SED_IOSTD_STR;
/* execute the compiled command */
if (qse_sed_execstd (sed, in, &out) <= -1)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_sed_geterrmsg(sed));
goto oops;
}
/* access the output data produced */
qse_printf (QSE_T("%.*s\n"), (int)out.u.str.len, out.u.str.ptr);
/* free the output data */
qse_sed_freemem (sed, out.u.str.ptr);
oops:
/* destroy the sed object */
if (sed) qse_sed_close (sed);
return ret;
}
int qse_main (int argc, qse_achar_t* argv[])
{
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int x;
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qse_open_stdsios ();
init_sed_sample_locale ();
x = qse_run_main (argc, argv, sed_main);
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qse_close_stdsios ();
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return x;
}