/* PSPP - computes sample statistics.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2008 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
#include <data/variable.h>
#include <data/file-handle-def.h>
#include <data/sys-file-writer.h>
+#include <data/sys-file-reader.h>
#include <data/value.h>
+#include <data/value-labels.h>
#include <data/format.h>
#include <data/data-in.h>
#include <string.h>
/* A thin wrapper around sfm_writer */
struct sysfile_info
{
- bool opened;
+ bool opened;
/* A pointer to the writer. The writer is owned by the struct */
struct casewriter *writer;
};
+/* A thin wrapper around sfm_reader */
+struct sysreader_info
+{
+ struct sfm_read_info opts;
+
+ /* A pointer to the reader. The reader is owned by the struct */
+ struct casereader *reader;
+
+ /* A pointer to the dictionary. */
+ struct dictionary *dict;
+};
+
+
+
/* A message handler which writes messages to PSPP::errstr */
static void
message_handler (const struct msg *m)
}
static void
-scalar_to_value (union value *val, SV *scalar)
+scalar_to_value (union value *val, SV *scalar, const struct variable *var)
{
- if ( looks_like_number (scalar))
+ if ( var_is_numeric (var))
{
- val->f = SvNV (scalar);
+ if ( SvNOK (scalar) || SvIOK (scalar) )
+ val->f = SvNV (scalar);
+ else
+ val->f = SYSMIS;
}
else
{
STRLEN len;
- char *p = SvPV (scalar, len);
- memset (val->s, ' ', MAX_SHORT_STRING);
+ const char *p = SvPV (scalar, len);
+ memset (val->s, ' ', var_get_width (var));
memcpy (val->s, p, len);
}
}
+static SV *
+value_to_scalar (const union value *val, const struct variable *var)
+{
+ if ( var_is_numeric (var))
+ {
+ if ( var_is_value_missing (var, val, MV_SYSTEM))
+ return newSVpvn ("", 0);
+
+ return newSVnv (val->f);
+ }
+ else
+ return newSVpvn (val->s, var_get_width (var));
+}
+
+
+static void
+var_set_input_format (struct variable *v, input_format ip_fmt)
+{
+ struct fmt_spec *if_copy = malloc (sizeof (*if_copy));
+ memcpy (if_copy, &ip_fmt, sizeof (ip_fmt));
+ var_attach_aux (v, if_copy, var_dtor_free);
+}
+
+static union value *
+make_value_from_scalar (SV *val, const struct variable *var)
+{
+ union value *uv = value_create (var_get_width (var));
+ scalar_to_value (uv, val, var);
+ return uv;
+}
+
+
MODULE = PSPP
BOOT:
fh_init ();
+MODULE = PSPP PACKAGE = PSPP
+
+SV *
+format_value (val, var)
+ SV *val
+ struct variable *var
+CODE:
+ SV *ret;
+ const struct fmt_spec *fmt = var_get_print_format (var);
+ union value *uv = make_value_from_scalar (val, var);
+ char *s;
+ s = malloc (fmt->w);
+ memset (s, '\0', fmt->w);
+ data_out (uv, fmt, s);
+ free (uv);
+ ret = newSVpv (s, fmt->w);
+ free (s);
+ RETVAL = ret;
+ OUTPUT:
+RETVAL
+
+
+int
+value_is_missing (val, var)
+ SV *val
+ struct variable *var
+CODE:
+ union value *uv = make_value_from_scalar (val, var);
+ int ret = var_is_value_missing (var, uv, MV_ANY);
+ free (uv);
+ RETVAL = ret;
+ OUTPUT:
+RETVAL
+
+
+
MODULE = PSPP PACKAGE = PSPP::Dict
struct dictionary *
-_dict_new()
+pxs_dict_new()
CODE:
RETVAL = dict_create ();
OUTPUT:
dict_destroy (dict);
+int
+get_var_cnt (dict)
+ struct dictionary *dict
+CODE:
+ RETVAL = dict_get_var_cnt (dict);
+OUTPUT:
+RETVAL
+
void
set_label (dict, label)
struct dictionary *dict
dict_set_weight (dict, var);
+struct variable *
+pxs_get_variable (dict, idx)
+ struct dictionary *dict
+ SV *idx
+INIT:
+ SV *errstr = get_sv("PSPP::errstr", TRUE);
+ sv_setpv (errstr, "");
+ if ( SvIV (idx) >= dict_get_var_cnt (dict))
+ {
+ sv_setpv (errstr, "The dictionary doesn't have that many variables.");
+ XSRETURN_UNDEF;
+ }
+CODE:
+ RETVAL = dict_get_var (dict, SvIV (idx));
+ OUTPUT:
+RETVAL
MODULE = PSPP PACKAGE = PSPP::Var
+
struct variable *
-_dict_create_var (dict, name, ip_fmt)
+pxs_dict_create_var (dict, name, ip_fmt)
struct dictionary * dict
char *name
input_format ip_fmt
}
CODE:
struct fmt_spec op_fmt;
- struct fmt_spec *if_copy;
+
struct variable *v;
op_fmt = fmt_for_output_from_input (&ip_fmt);
v = dict_create_var (dict, name,
XSRETURN_UNDEF;
}
var_set_both_formats (v, &op_fmt);
- if_copy = malloc (sizeof (*if_copy));
- memcpy (if_copy, &ip_fmt, sizeof (ip_fmt));
- var_attach_aux (v, if_copy, var_dtor_free);
+ var_set_input_format (v, ip_fmt);
RETVAL = v;
OUTPUT:
RETVAL
croak ("No more than 3 missing values are permitted");
for (i = 0; i < items - 1; ++i)
- scalar_to_value (&val[i], ST(i+1));
+ scalar_to_value (&val[i], ST(i+1), var);
CODE:
struct missing_values mv;
mv_init (&mv, var_get_width (var));
char *label
CODE:
var_set_label (var, label);
-
+
void
clear_value_labels (var)
var_clear_value_labels (var);
void
-_set_write_format (var, fmt)
+pxs_set_write_format (var, fmt)
struct variable *var
output_format fmt
CODE:
void
-_set_print_format (var, fmt)
+pxs_set_print_format (var, fmt)
struct variable *var
output_format fmt
CODE:
var_set_print_format (var, &fmt);
void
-_set_output_format (var, fmt)
+pxs_set_output_format (var, fmt)
struct variable *var
output_format fmt
CODE:
+const char *
+get_name (var)
+ struct variable * var
+CODE:
+ RETVAL = var_get_name (var);
+ OUTPUT:
+RETVAL
+
+
+const char *
+get_label (var)
+ struct variable * var
+CODE:
+ RETVAL = var_get_label (var);
+ OUTPUT:
+RETVAL
+
+
+SV *
+get_value_labels (var)
+ struct variable *var
+CODE:
+ HV *labelhash = (HV *) sv_2mortal ((SV *) newHV());
+ struct val_lab *vl;
+ struct val_labs_iterator *viter = NULL;
+ const struct val_labs *labels = var_get_value_labels (var);
+
+ if ( labels )
+ {
+ for (vl = val_labs_first (labels, &viter);
+ vl;
+ vl = val_labs_next (labels, &viter))
+ {
+ SV *sv = value_to_scalar (&vl->value, var);
+ STRLEN len;
+ const char *s = SvPV (sv, len);
+ hv_store (labelhash, s, len, newSVpv (vl->label, 0), 0);
+ }
+ }
+
+ RETVAL = newRV ((SV *) labelhash);
+ OUTPUT:
+RETVAL
+
+
+
MODULE = PSPP PACKAGE = PSPP::Sysfile
struct sysfile_info *
-_create_sysfile (name, dict, opts_hr)
- char * name
- struct dictionary * dict
+pxs_create_sysfile (name, dict, opts_hr)
+ char *name
+ struct dictionary *dict
SV *opts_hr
INIT:
struct sfm_write_options opts;
sfi->writer = sfm_open_writer (fh, dict, opts);
sfi->dict = dict;
sfi->opened = true;
+
RETVAL = sfi;
OUTPUT:
RETVAL
const struct variable **vv;
size_t nv;
struct ccase c;
+ SV *sv;
if ( av_len (av_case) >= dict_get_var_cnt (sfi->dict))
XSRETURN_UNDEF;
dict_get_vars (sfi->dict, &vv, &nv, 1u << DC_ORDINARY | 1u << DC_SYSTEM);
- SV *sv ;
for (sv = av_shift (av_case); SvOK (sv); sv = av_shift (av_case))
{
const struct variable *v = vv[i++];
- struct substring ss = ss_cstr (SvPV_nolen (sv));
- struct fmt_spec *ifmt = var_get_aux (v);
-
- if ( ! data_in (ss, LEGACY_NATIVE, ifmt->type, 0, 0, 0, case_data_rw (&c, v),
- var_get_width (v)) )
- {
- RETVAL = 0;
- goto finish;
- }
+ const struct fmt_spec *ifmt = var_get_aux (v);
+
+ /* If an input format has been set, then use it.
+ Otherwise just convert the raw value.
+ */
+ if ( ifmt )
+ {
+ struct substring ss = ss_cstr (SvPV_nolen (sv));
+ if ( ! data_in (ss, LEGACY_NATIVE, ifmt->type, 0, 0, 0,
+ case_data_rw (&c, v),
+ var_get_width (v)) )
+ {
+ RETVAL = 0;
+ goto finish;
+ }
+ }
+ else
+ {
+ scalar_to_value (case_data_rw (&c, v), sv, v);
+ }
}
+
/* The remaining variables must be sysmis or blank string */
while (i < dict_get_var_cnt (sfi->dict))
{
}
RETVAL = casewriter_write (sfi->writer, &c);
finish:
- case_destroy (&c);
+// Case_destroy (&c);
free (vv);
OUTPUT:
RETVAL
+
+
+\f
+
+MODULE = PSPP PACKAGE = PSPP::Reader
+
+struct sysreader_info *
+pxs_open_sysfile (name)
+ char * name
+CODE:
+ struct casereader *reader;
+ struct sysreader_info *sri = NULL;
+ struct file_handle *fh =
+ fh_create_file (NULL, name, fh_default_properties () );
+
+ sri = xmalloc (sizeof (*sri));
+ sri->reader = sfm_open_reader (fh, &sri->dict, &sri->opts);
+
+ if ( NULL == sri->reader)
+ {
+ free (sri);
+ sri = NULL;
+ }
+
+ RETVAL = sri;
+ OUTPUT:
+RETVAL
+
+
+struct dictionary *
+pxs_get_dict (reader)
+ struct sysreader_info *reader;
+CODE:
+ RETVAL = reader->dict;
+ OUTPUT:
+RETVAL
+
+
+SV *
+get_next_case (sfr)
+ struct sysreader_info *sfr;
+CODE:
+ struct ccase c;
+
+ if (! casereader_read (sfr->reader, &c))
+ {
+ RETVAL = 0;
+ }
+ else
+ {
+ int v;
+ AV *av_case = (AV *) sv_2mortal ((SV *) newAV());
+
+ for (v = 0; v < dict_get_var_cnt (sfr->dict); ++v )
+ {
+ const struct variable *var = dict_get_var (sfr->dict, v);
+ const union value *val = case_data (&c, var);
+
+ av_push (av_case, value_to_scalar (val, var));
+ }
+
+ case_destroy (&c);
+ RETVAL = newRV ((SV *) av_case);
+ }
+OUTPUT:
+ RETVAL
+
+
projects / pspp-builds.git / blobdiff