qse/samples/awk/awk08.c

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#include <qse/awk/stdawk.h>
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#include <qse/si/sio.h>
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#include <qse/cmn/main.h>
#include "awk00.h"
static const qse_char_t* src = QSE_T(
"BEGIN { G0 = 10; G1 = \"hello, world\"; G2 = sin(90); G3=33; G4=44; G5=55; G6=66; G7=77; G8=88; G9=99; match (\"abcdefg\", /[c-f]+/); }"
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);
struct ginfo_t
{
int g[10];
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};
typedef struct ginfo_t ginfo_t;
static int awk_main (int argc, qse_char_t* argv[])
{
qse_awk_t* awk = QSE_NULL;
qse_awk_rtx_t* rtx = QSE_NULL;
qse_awk_parsestd_t psin[2];
qse_char_t* str;
qse_size_t len;
qse_awk_val_t* rtv;
int ret = -1, i;
ginfo_t* ginfo;
/* create an awk object */
awk = qse_awk_openstd(QSE_SIZEOF(*ginfo), QSE_NULL);
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if (awk == QSE_NULL)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: cannot open awk\n"));
goto oops;
}
/* add global variables G1, G2, and G3. store the IDs to the extension
* area. the extension area is used for demonstration. there is no special
* need to use it when adding global variables. */
ginfo = qse_awk_getxtn(awk);
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for (i = 0; i < QSE_COUNTOF(ginfo->g); i++)
{
qse_char_t name[] = QSE_T("GX");
qse_wchar_t wname[] = QSE_WT("GX");
qse_mchar_t mname[] = QSE_MT("GX");
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name[1] = QSE_T('0') + i;
wname[1] = QSE_WT('0') + i;
mname[1] = QSE_MT('0') + i;
if (i < 3)
ginfo->g[i] = qse_awk_addgblwithmbs(awk, mname);
else if (i < 6)
ginfo->g[i] = qse_awk_addgblwithwcs(awk, wname);
else
ginfo->g[i] = qse_awk_addgbl(awk, name);
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if (ginfo->g[i] <= -1)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_awk_geterrmsg(awk));
goto oops;
}
}
/* prepare an awk script to parse */
psin[0].type = QSE_AWK_PARSESTD_STR;
psin[0].u.str.ptr = src;
psin[0].u.str.len = qse_strlen(src);
psin[1].type = QSE_AWK_PARSESTD_NULL;
/* parse the script */
if (qse_awk_parsestd (awk, psin, QSE_NULL) <= -1)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_awk_geterrmsg(awk));
goto oops;
}
/* create a runtime context */
rtx = qse_awk_rtx_openstd (
awk,
0,
QSE_T("awk08"),
QSE_NULL, /* stdin */
QSE_NULL, /* stdout */
QSE_NULL /* default cmgr */
);
if (rtx == QSE_NULL)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_awk_geterrmsg(awk));
goto oops;
}
/* execute the script over the standard data streams */
rtv = qse_awk_rtx_loop (rtx);
if (rtv == QSE_NULL)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_awk_rtx_geterrmsg(rtx));
goto oops;
}
/* clear the return value */
qse_awk_rtx_refdownval (rtx, rtv);
/* get the values of built-in global variables
* and print them */
for (i = 0; i < QSE_COUNTOF(ginfo->g); i++)
{
str = qse_awk_rtx_valtostrdup (rtx, qse_awk_rtx_getgbl (rtx, ginfo->g[i]), &len);
if (str == QSE_NULL)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_awk_rtx_geterrmsg(rtx));
goto oops;
}
qse_printf (QSE_T("G%d => %.*s\n"), i, (int)len, str);
qse_awk_rtx_freemem (rtx, str);
}
/* get the value of RLENGTH and print it */
str = qse_awk_rtx_valtostrdup (rtx, qse_awk_rtx_getgbl (rtx, QSE_AWK_GBL_RLENGTH), &len);
if (str == QSE_NULL)
{
qse_fprintf (QSE_STDERR, QSE_T("ERROR: %s\n"), qse_awk_rtx_geterrmsg(rtx));
goto oops;
}
qse_printf (QSE_T("RLENGTH => %.*s\n"), (int)len, str);
qse_awk_rtx_freemem (rtx, str);
ret = 0;
oops:
/* destroy a runtime context */
if (rtx) qse_awk_rtx_close (rtx);
/* destroy the processor */
if (awk) qse_awk_close (awk);
return ret;
}
int qse_main (int argc, qse_achar_t* argv[])
{
int x;
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qse_open_stdsios ();
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init_awk_sample_locale ();
x = qse_run_main (argc, argv, awk_main);
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qse_close_stdsios ();
return x;
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}