--- /dev/null
+/* PSPP - computes sample statistics.
+ Copyright (C) 2007 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
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+#include <config.h>
+
+#include "ppport.h"
+
+#include "minmax.h"
+#include <libpspp/message.h>
+#include <libpspp/version.h>
+#include <gl/xalloc.h>
+#include <data/dictionary.h>
+#include <data/case.h>
+#include <data/variable.h>
+#include <data/file-handle-def.h>
+#include <data/sys-file-writer.h>
+#include <data/value.h>
+#include <data/format.h>
+#include <data/data-in.h>
+#include <string.h>
+
+typedef struct fmt_spec input_format ;
+typedef struct fmt_spec output_format ;
+
+
+/* A thin wrapper around sfm_writer */
+struct sysfile_info
+{
+ bool opened;
+
+ /* A pointer to the writer. The writer is owned by the struct */
+ struct casewriter *writer;
+
+ /* A pointer to the dictionary. Owned externally */
+ const struct dictionary *dict;
+};
+
+
+/* A message handler which writes messages to PSPP::errstr */
+static void
+message_handler (const struct msg *m)
+{
+ SV *errstr = get_sv("PSPP::errstr", TRUE);
+ sv_setpv (errstr, m->text);
+}
+
+static int
+sysfile_close (struct sysfile_info *sfi)
+{
+ int retval ;
+ if ( ! sfi->opened )
+ return 0;
+
+ retval = casewriter_destroy (sfi->writer);
+ if (retval > 0 )
+ sfi->opened = false;
+
+ return retval;
+}
+
+static void
+scalar_to_value (union value *val, SV *scalar)
+{
+ if ( looks_like_number (scalar))
+ {
+ val->f = SvNV (scalar);
+ }
+ else
+ {
+ STRLEN len;
+ char *p = SvPV (scalar, len);
+ memset (val->s, ' ', MAX_SHORT_STRING);
+ memcpy (val->s, p, len);
+ }
+}
+
+
+MODULE = PSPP
+
+BOOT:
+ msg_init (NULL, message_handler);
+ settings_init (0, 0);
+ fh_init ();
+
+
+MODULE = PSPP PACKAGE = PSPP::Dict
+
+struct dictionary *
+_dict_new()
+CODE:
+ RETVAL = dict_create ();
+OUTPUT:
+ RETVAL
+
+
+void
+DESTROY (dict)
+ struct dictionary *dict
+CODE:
+ dict_destroy (dict);
+
+
+void
+set_label (dict, label)
+ struct dictionary *dict
+ char *label
+CODE:
+ dict_set_label (dict, label);
+
+void
+set_documents (dict, docs)
+ struct dictionary *dict
+ char *docs
+CODE:
+ dict_set_documents (dict, docs);
+
+
+void
+add_document (dict, doc)
+ struct dictionary *dict
+ char *doc
+CODE:
+ dict_add_document_line (dict, doc);
+
+
+void
+clear_documents (dict)
+ struct dictionary *dict
+CODE:
+ dict_clear_documents (dict);
+
+
+void
+set_weight (dict, var)
+ struct dictionary *dict
+ struct variable *var
+CODE:
+ dict_set_weight (dict, var);
+
+
+
+MODULE = PSPP PACKAGE = PSPP::Var
+
+struct variable *
+_dict_create_var (dict, name, ip_fmt)
+ struct dictionary * dict
+ char *name
+ input_format ip_fmt
+INIT:
+ SV *errstr = get_sv("PSPP::errstr", TRUE);
+ sv_setpv (errstr, "");
+ if ( ! var_is_plausible_name (name, false))
+ {
+ sv_setpv (errstr, "The variable name is not valid.");
+ XSRETURN_UNDEF;
+ }
+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,
+ fmt_is_string (op_fmt.type) ? op_fmt.w : 0);
+ if ( NULL == v )
+ {
+ sv_setpv (errstr, "The variable could not be created (probably already exists).");
+ 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);
+ RETVAL = v;
+OUTPUT:
+ RETVAL
+
+
+int
+set_missing_values (var, v1, ...)
+ struct variable *var;
+ SV *v1;
+INIT:
+ int i;
+ union value val[3];
+
+ if ( items > 4 )
+ croak ("No more than 3 missing values are permitted");
+
+ for (i = 0; i < items - 1; ++i)
+ scalar_to_value (&val[i], ST(i+1));
+CODE:
+ struct missing_values mv;
+ mv_init (&mv, var_get_width (var));
+ for (i = 0 ; i < items - 1; ++i )
+ mv_add_value (&mv, &val[i]);
+ var_set_missing_values (var, &mv);
+
+
+void
+set_label (var, label)
+ struct variable *var;
+ char *label
+CODE:
+ var_set_label (var, label);
+
+
+void
+clear_value_labels (var)
+ struct variable *var;
+CODE:
+ var_clear_value_labels (var);
+
+void
+_set_write_format (var, fmt)
+ struct variable *var
+ output_format fmt
+CODE:
+ var_set_write_format (var, &fmt);
+
+
+void
+_set_print_format (var, fmt)
+ struct variable *var
+ output_format fmt
+CODE:
+ var_set_print_format (var, &fmt);
+
+void
+_set_output_format (var, fmt)
+ struct variable *var
+ output_format fmt
+CODE:
+ var_set_both_formats (var, &fmt);
+
+
+int
+add_value_label (var, key, label)
+ struct variable *var
+ SV *key
+ char *label
+INIT:
+ SV *errstr = get_sv("PSPP::errstr", TRUE);
+ sv_setpv (errstr, "");
+CODE:
+ union value the_value;
+
+ if ( var_is_numeric (var))
+ {
+ if ( ! looks_like_number (key))
+ {
+ sv_setpv (errstr, "Cannot add label with string key to a numeric variable");
+ XSRETURN_IV (0);
+ }
+ the_value.f = SvNV (key);
+ }
+ else
+ {
+ if ( var_is_long_string (var) )
+ {
+ sv_setpv (errstr, "Cannot add label to a long string variable");
+ XSRETURN_IV (0);
+ }
+ strncpy (the_value.s, SvPV_nolen(key), MAX_SHORT_STRING);
+ }
+ if (! var_add_value_label (var, &the_value, label) )
+ {
+ sv_setpv (errstr, "Something went wrong");
+ XSRETURN_IV (0);
+ }
+ XSRETURN_IV (1);
+
+
+
+MODULE = PSPP PACKAGE = PSPP::Sysfile
+
+
+struct sysfile_info *
+_create_sysfile (name, dict, opts_hr)
+ char * name
+ struct dictionary * dict
+ SV *opts_hr
+INIT:
+ struct sfm_write_options opts;
+ if (!SvROK (opts_hr))
+ {
+ opts = sfm_writer_default_options ();
+ }
+ else
+ {
+ HV *opt_h = (HV *) SvRV (opts_hr);
+ SV** readonly = hv_fetch(opt_h, "readonly", 8, 0);
+ SV** compress = hv_fetch(opt_h, "compress", 8, 0);
+ SV** version = hv_fetch(opt_h, "version", 7, 0);
+
+ opts.create_writeable = readonly ? ! SvIV (*readonly) : true;
+ opts.compress = compress ? SvIV (*compress) : false;
+ opts.version = version ? SvIV (*version) : 3 ;
+ }
+CODE:
+ struct file_handle *fh =
+ fh_create_file (NULL, name, fh_default_properties () );
+ struct sysfile_info *sfi = xmalloc (sizeof (*sfi));
+ sfi->writer = sfm_open_writer (fh, dict, opts);
+ sfi->dict = dict;
+ sfi->opened = true;
+ RETVAL = sfi;
+ OUTPUT:
+RETVAL
+
+int
+close (sfi)
+ struct sysfile_info *sfi
+CODE:
+ RETVAL = sysfile_close (sfi);
+OUTPUT:
+ RETVAL
+
+void
+DESTROY (sfi)
+ struct sysfile_info *sfi
+CODE:
+ sysfile_close (sfi);
+ free (sfi);
+
+int
+append_case (sfi, ccase)
+ struct sysfile_info *sfi
+ SV *ccase
+INIT:
+ SV *errstr = get_sv("PSPP::errstr", TRUE);
+ sv_setpv (errstr, "");
+ if ( (!SvROK(ccase)))
+ {
+ XSRETURN_UNDEF;
+ }
+CODE:
+ int i = 0;
+ AV *av_case = (AV*) SvRV (ccase);
+
+ const struct variable **vv;
+ size_t nv;
+ struct ccase c;
+
+ if ( av_len (av_case) >= dict_get_var_cnt (sfi->dict))
+ XSRETURN_UNDEF;
+
+ case_create (&c, dict_get_next_value_idx (sfi->dict));
+
+ 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;
+ }
+ }
+ /* The remaining variables must be sysmis or blank string */
+ while (i < dict_get_var_cnt (sfi->dict))
+ {
+ const struct variable *v = vv[i++];
+ union value *val = case_data_rw (&c, v);
+ if ( var_is_numeric (v))
+ val->f = SYSMIS;
+ else
+ memset (val->s, ' ', var_get_width (v));
+ }
+ RETVAL = casewriter_write (sfi->writer, &c);
+ finish:
+ case_destroy (&c);
+ free (vv);
+OUTPUT:
+ RETVAL
projects / pspp-builds.git / blobdiff