/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+ Copyright (C) 1997-9, 2000, 2006, 2009-2015 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
#include "libpspp/compiler.h"
#include "libpspp/hash-functions.h"
#include "libpspp/i18n.h"
+#include "libpspp/intern.h"
#include "libpspp/message.h"
#include "libpspp/misc.h"
+#include "libpspp/pxd.h"
#include "libpspp/str.h"
#include "gl/minmax.h"
/* GUI information. */
enum measure measure; /* Nominal, ordinal, or continuous. */
+ enum var_role role; /* Intended use. */
int display_width; /* Width of data editor column. */
enum alignment alignment; /* Alignment of data in GUI. */
char **short_names;
size_t short_name_cnt;
- /* Each command may use these fields as needed. */
- void *aux;
- void (*aux_dtor) (struct variable *);
-
/* Custom attributes. */
struct attrset attributes;
};
+
+static void var_uncache (struct variable *);
\f
+
+static void var_set_print_format_quiet (struct variable *v, const struct fmt_spec *print);
+static void var_set_write_format_quiet (struct variable *v, const struct fmt_spec *write);
+static void var_set_label_quiet (struct variable *v, const char *label);
+static void var_set_name_quiet (struct variable *v, const char *name);
+
/* Creates and returns a new variable with the given NAME and
WIDTH and other fields initialized to default values. The
variable is not added to a dictionary; for that, use
assert (width >= 0 && width <= MAX_STRING);
v = xzalloc (sizeof *v);
- var_set_name (v, name);
+ var_set_name_quiet (v, name);
v->width = width;
mv_init (&v->miss, width);
v->leave = var_must_leave (v);
type = val_type_from_width (width);
v->alignment = var_default_alignment (type);
v->measure = var_default_measure (type);
+ v->role = ROLE_INPUT;
v->display_width = var_default_display_width (width);
v->print = v->write = var_default_formats (width);
attrset_init (&v->attributes);
return v;
}
-/* Creates and returns a clone of OLD_VAR. Most properties of
- the new variable are copied from OLD_VAR, except:
-
- - The variable's short name is not copied, because there is
- no reason to give a new variable with potentially a new
- name the same short name.
-
- - The new variable is not added to OLD_VAR's dictionary by
- default. Use dict_clone_var, instead, to do that.
-*/
-struct variable *
-var_clone (const struct variable *old_var)
-{
- struct variable *new_var = var_create (var_get_name (old_var),
- var_get_width (old_var));
-
- var_set_missing_values (new_var, var_get_missing_values (old_var));
- var_set_print_format (new_var, var_get_print_format (old_var));
- var_set_write_format (new_var, var_get_write_format (old_var));
- var_set_value_labels (new_var, var_get_value_labels (old_var));
- var_set_label (new_var, var_get_label (old_var), false);
- var_set_measure (new_var, var_get_measure (old_var));
- var_set_display_width (new_var, var_get_display_width (old_var));
- var_set_alignment (new_var, var_get_alignment (old_var));
- var_set_leave (new_var, var_get_leave (old_var));
- var_set_attributes (new_var, var_get_attributes (old_var));
-
- return new_var;
-}
-
/* Destroys variable V.
V must not belong to a dictionary. If it does, use
dict_delete_var instead. */
if (v != NULL)
{
assert (!var_has_vardict (v));
+ var_uncache (v);
mv_destroy (&v->miss);
var_clear_short_names (v);
- var_clear_aux (v);
val_labs_destroy (v->val_labs);
- var_clear_label (v);
+ var_set_label_quiet (v, NULL);
attrset_destroy (var_get_attributes (v));
free (v->name);
ds_destroy (&v->name_and_label);
/* Sets V's name to NAME, a UTF-8 encoded string.
Do not use this function for a variable in a dictionary. Use
dict_rename_var instead. */
-void
-var_set_name (struct variable *v, const char *name)
+static void
+var_set_name_quiet (struct variable *v, const char *name)
{
assert (!var_has_vardict (v));
assert (id_is_plausible (name, false));
v->name = xstrdup (name);
ds_destroy (&v->name_and_label);
ds_init_empty (&v->name_and_label);
- dict_var_changed (v);
+ var_uncache (v);
+}
+
+/* Sets V's name to NAME, a UTF-8 encoded string.
+ Do not use this function for a variable in a dictionary. Use
+ dict_rename_var instead. */
+void
+var_set_name (struct variable *v, const char *name)
+{
+ struct variable *ov = var_clone (v);
+ var_set_name_quiet (v, name);
+ dict_var_changed (v, VAR_TRAIT_NAME, ov);
}
/* Returns VAR's dictionary class. */
return v->width;
}
-/* Changes the width of V to NEW_WIDTH.
- This function should be used cautiously. */
void
-var_set_width (struct variable *v, int new_width)
+var_set_width_and_formats (struct variable *v, int new_width,
+ const struct fmt_spec *print, const struct fmt_spec *write)
{
- const int old_width = v->width;
+ struct variable *ov;
+ unsigned int traits = 0;
- if (old_width == new_width)
- return;
+ ov = var_clone (v);
- if (mv_is_resizable (&v->miss, new_width))
- mv_resize (&v->miss, new_width);
- else
+ if (var_has_missing_values (v))
{
- mv_destroy (&v->miss);
- mv_init (&v->miss, new_width);
+ if (mv_is_resizable (&v->miss, new_width))
+ mv_resize (&v->miss, new_width);
+ else
+ {
+ mv_destroy (&v->miss);
+ mv_init (&v->miss, new_width);
+ }
+ traits |= VAR_TRAIT_MISSING_VALUES;
}
if (v->val_labs != NULL)
val_labs_destroy (v->val_labs);
v->val_labs = NULL;
}
+ traits |= VAR_TRAIT_VALUE_LABELS;
}
- fmt_resize (&v->print, new_width);
- fmt_resize (&v->write, new_width);
+ if (fmt_resize (&v->print, new_width))
+ traits |= VAR_TRAIT_PRINT_FORMAT;
+
+ if (fmt_resize (&v->write, new_width))
+ traits |= VAR_TRAIT_WRITE_FORMAT;
- v->width = new_width;
- dict_var_resized (v, old_width);
- dict_var_changed (v);
+ if (v->width != new_width)
+ {
+ v->width = new_width;
+ traits |= VAR_TRAIT_WIDTH;
+ }
+
+ if (print)
+ {
+ var_set_print_format_quiet (v, print);
+ traits |= VAR_TRAIT_PRINT_FORMAT;
+ }
+
+ if (write)
+ {
+ var_set_write_format_quiet (v, write);
+ traits |= VAR_TRAIT_WRITE_FORMAT;
+ }
+
+ if (traits != 0)
+ dict_var_changed (v, traits, ov);
+
+ var_uncache (v);
}
+/* Changes the width of V to NEW_WIDTH.
+ This function should be used cautiously. */
+void
+var_set_width (struct variable *v, int new_width)
+{
+ const int old_width = v->width;
+
+ if (old_width == new_width)
+ return;
+
+ var_set_width_and_formats (v, new_width, NULL, NULL);
+}
+
+
+
+
/* Returns true if variable V is numeric, false otherwise. */
bool
var_is_numeric (const struct variable *v)
width or at least resizable to V's width.
If MISS is null, then V's missing values, if any, are
cleared. */
-void
-var_set_missing_values (struct variable *v, const struct missing_values *miss)
+static void
+var_set_missing_values_quiet (struct variable *v, const struct missing_values *miss)
{
if (miss != NULL)
{
}
else
mv_clear (&v->miss);
+}
- dict_var_changed (v);
+/* Sets variable V's missing values to MISS, which must be of V's
+ width or at least resizable to V's width.
+ If MISS is null, then V's missing values, if any, are
+ cleared. */
+void
+var_set_missing_values (struct variable *v, const struct missing_values *miss)
+{
+ struct variable *ov = var_clone (v);
+ var_set_missing_values_quiet (v, miss);
+ dict_var_changed (v, VAR_TRAIT_MISSING_VALUES, ov);
}
/* Sets variable V to have no user-missing values. */
which must have a width equal to V's width or one that can be
changed to V's width.
If VLS is null, then V's value labels, if any, are removed. */
-void
-var_set_value_labels (struct variable *v, const struct val_labs *vls)
+static void
+var_set_value_labels_quiet (struct variable *v, const struct val_labs *vls)
{
- val_labs_destroy (v->val_labs);
- v->val_labs = NULL;
+ bool changed = false;
+
+ if (v->val_labs != NULL)
+ {
+ val_labs_destroy (v->val_labs);
+ v->val_labs = NULL;
+ changed = true;
+ }
if (vls != NULL)
{
assert (val_labs_can_set_width (vls, v->width));
v->val_labs = val_labs_clone (vls);
val_labs_set_width (v->val_labs, v->width);
- dict_var_changed (v);
}
+
+ if (changed)
+ var_uncache (v);
}
+
+/* Sets variable V's value labels to a copy of VLS,
+ which must have a width equal to V's width or one that can be
+ changed to V's width.
+ If VLS is null, then V's value labels, if any, are removed. */
+void
+var_set_value_labels (struct variable *v, const struct val_labs *vls)
+{
+ struct variable *ov = var_clone (v);
+ var_set_value_labels_quiet (v, vls);
+ dict_var_changed (v, VAR_TRAIT_LABEL, ov);
+}
+
+
/* Makes sure that V has a set of value labels,
by assigning one to it if necessary. */
static void
var_add_value_label (struct variable *v,
const union value *value, const char *label)
{
+ bool changed;
+
alloc_value_labels (v);
- return val_labs_add (v->val_labs, value, label);
+
+ changed = val_labs_add (v->val_labs, value, label);
+ if (changed)
+ var_uncache (v);
+ return changed;
}
/* Adds or replaces a value label with the given VALUE and UTF-8 encoded LABEL
{
alloc_value_labels (v);
val_labs_replace (v->val_labs, value, label);
+ var_uncache (v);
}
/* Removes V's value labels, if any. */
valid format specification for a variable of V's width
(ordinarily an output format, but input formats are not
rejected). */
-void
-var_set_print_format (struct variable *v, const struct fmt_spec *print)
+static void
+var_set_print_format_quiet (struct variable *v, const struct fmt_spec *print)
{
if (!fmt_equal (&v->print, print))
{
assert (fmt_check_width_compat (print, v->width));
v->print = *print;
- dict_var_changed (v);
+ var_uncache (v);
}
}
+/* Sets V's print format specification to PRINT, which must be a
+ valid format specification for a variable of V's width
+ (ordinarily an output format, but input formats are not
+ rejected). */
+void
+var_set_print_format (struct variable *v, const struct fmt_spec *print)
+{
+ struct variable *ov = var_clone (v);
+ var_set_print_format_quiet (v, print);
+ dict_var_changed (v, VAR_TRAIT_PRINT_FORMAT, ov);
+ var_uncache (v);
+}
+
/* Returns V's write format specification. */
const struct fmt_spec *
var_get_write_format (const struct variable *v)
valid format specification for a variable of V's width
(ordinarily an output format, but input formats are not
rejected). */
-void
-var_set_write_format (struct variable *v, const struct fmt_spec *write)
+static void
+var_set_write_format_quiet (struct variable *v, const struct fmt_spec *write)
{
if (!fmt_equal (&v->write, write))
{
assert (fmt_check_width_compat (write, v->width));
v->write = *write;
- dict_var_changed (v);
+ var_uncache (v);
}
}
+/* Sets V's write format specification to WRITE, which must be a
+ valid format specification for a variable of V's width
+ (ordinarily an output format, but input formats are not
+ rejected). */
+void
+var_set_write_format (struct variable *v, const struct fmt_spec *write)
+{
+ struct variable *ov = var_clone (v);
+ var_set_write_format_quiet (v, write);
+ dict_var_changed (v, VAR_TRAIT_WRITE_FORMAT, ov);
+}
+
+
/* Sets V's print and write format specifications to FORMAT,
which must be a valid format specification for a variable of
V's width (ordinarily an output format, but input formats are
void
var_set_both_formats (struct variable *v, const struct fmt_spec *format)
{
- var_set_print_format (v, format);
- var_set_write_format (v, format);
+ struct variable *ov = var_clone (v);
+ var_set_print_format_quiet (v, format);
+ var_set_write_format_quiet (v, format);
+ dict_var_changed (v, VAR_TRAIT_PRINT_FORMAT | VAR_TRAIT_WRITE_FORMAT, ov);
}
/* Returns the default print and write format for a variable of
/* Sets V's variable label to UTF-8 encoded string LABEL, stripping off leading
and trailing white space. If LABEL is a null pointer or if LABEL is an
empty string (after stripping white space), then V's variable label (if any)
- is removed.
-
- Variable labels are limited to 255 bytes in V's encoding (as returned by
- var_get_encoding()). If LABEL fits within this limit, this function returns
- true. Otherwise, the variable label is set to a truncated value, this
- function returns false and, if ISSUE_WARNING is true, issues a warning. */
-bool
-var_set_label (struct variable *v, const char *label, bool issue_warning)
+ is removed. */
+static void
+var_set_label_quiet (struct variable *v, const char *label)
{
- bool truncated = false;
-
free (v->label);
v->label = NULL;
if (label != NULL && label[strspn (label, CC_SPACES)])
- {
- const char *dict_encoding = var_get_encoding (v);
- struct substring s = ss_cstr (label);
- size_t trunc_len;
-
- if (dict_encoding != NULL)
- {
- enum { MAX_LABEL_LEN = 255 };
-
- trunc_len = utf8_encoding_trunc_len (label, dict_encoding,
- MAX_LABEL_LEN);
- if (ss_length (s) > trunc_len)
- {
- if (issue_warning)
- msg (SW, _("Truncating variable label for variable `%s' to %d "
- "bytes."), var_get_name (v), MAX_LABEL_LEN);
- ss_truncate (&s, trunc_len);
- truncated = true;
- }
- }
-
- v->label = ss_xstrdup (s);
- }
+ v->label = xstrdup (label);
ds_destroy (&v->name_and_label);
ds_init_empty (&v->name_and_label);
+ var_uncache (v);
+}
- dict_var_changed (v);
-
- return truncated;
+/* Sets V's variable label to UTF-8 encoded string LABEL, stripping off leading
+ and trailing white space. If LABEL is a null pointer or if LABEL is an
+ empty string (after stripping white space), then V's variable label (if any)
+ is removed. */
+void
+var_set_label (struct variable *v, const char *label)
+{
+ struct variable *ov = var_clone (v);
+ var_set_label_quiet (v, label);
+ dict_var_changed (v, VAR_TRAIT_LABEL, ov);
}
+
/* Removes any variable label from V. */
void
var_clear_label (struct variable *v)
{
- var_set_label (v, NULL, false);
+ var_set_label (v, NULL);
}
/* Returns true if V has a variable V,
}
}
+/* Returns a string version of measurement level M, for use in PSPP command
+ syntax. */
+const char *
+measure_to_syntax (enum measure m)
+{
+ switch (m)
+ {
+ case MEASURE_NOMINAL:
+ return "NOMINAL";
+
+ case MEASURE_ORDINAL:
+ return "ORDINAL";
+
+ case MEASURE_SCALE:
+ return "SCALE";
+
+ default:
+ return "Invalid";
+ }
+}
+
/* Returns V's measurement level. */
enum measure
var_get_measure (const struct variable *v)
}
/* Sets V's measurement level to MEASURE. */
-void
-var_set_measure (struct variable *v, enum measure measure)
+static void
+var_set_measure_quiet (struct variable *v, enum measure measure)
{
assert (measure_is_valid (measure));
v->measure = measure;
- dict_var_changed (v);
}
+/* Sets V's measurement level to MEASURE. */
+void
+var_set_measure (struct variable *v, enum measure measure)
+{
+ struct variable *ov = var_clone (v);
+ var_set_measure_quiet (v, measure);
+ dict_var_changed (v, VAR_TRAIT_MEASURE, ov);
+}
+
+
/* Returns the default measurement level for a variable of the
given TYPE, as set by var_create. The return value can be
used to reset a variable's measurement level to the
return type == VAL_NUMERIC ? MEASURE_SCALE : MEASURE_NOMINAL;
}
\f
+/* Returns true if M is a valid variable role,
+ false otherwise. */
+bool
+var_role_is_valid (enum var_role role)
+{
+ switch (role)
+ {
+ case ROLE_NONE:
+ case ROLE_INPUT:
+ case ROLE_TARGET:
+ case ROLE_BOTH:
+ case ROLE_PARTITION:
+ case ROLE_SPLIT:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+/* Returns a string version of ROLE, for display to a user. */
+const char *
+var_role_to_string (enum var_role role)
+{
+ switch (role)
+ {
+ case ROLE_INPUT:
+ return _("Input");
+
+ case ROLE_TARGET:
+ return _("Output");
+
+ case ROLE_BOTH:
+ return _("Both");
+
+ case ROLE_NONE:
+ return _("None");
+
+ case ROLE_PARTITION:
+ return _("Partition");
+
+ case ROLE_SPLIT:
+ return _("Split");
+
+ default:
+ return "Invalid";
+ }
+}
+
+/* Returns a string version of ROLE, for use in PSPP comamnd syntax. */
+const char *
+var_role_to_syntax (enum var_role role)
+{
+ switch (role)
+ {
+ case ROLE_INPUT:
+ return "INPUT";
+
+ case ROLE_TARGET:
+ return "TARGET";
+
+ case ROLE_BOTH:
+ return "BOTH";
+
+ case ROLE_NONE:
+ return "NONE";
+
+ case ROLE_PARTITION:
+ return "PARTITION";
+
+ case ROLE_SPLIT:
+ return "SPLIT";
+
+ default:
+ return "<invalid>";
+ }
+}
+
+/* Returns V's role. */
+enum var_role
+var_get_role (const struct variable *v)
+{
+ return v->role;
+}
+
+/* Sets V's role to ROLE. */
+static void
+var_set_role_quiet (struct variable *v, enum var_role role)
+{
+ assert (var_role_is_valid (role));
+ v->role = role;
+}
+
+
+/* Sets V's role to ROLE. */
+void
+var_set_role (struct variable *v, enum var_role role)
+{
+ struct variable *ov = var_clone (v);
+ var_set_role_quiet (v, role);
+ dict_var_changed (v, VAR_TRAIT_ROLE, ov);
+}
+\f
/* Returns V's display width, which applies only to GUIs. */
int
var_get_display_width (const struct variable *v)
}
/* Sets V's display width to DISPLAY_WIDTH. */
+static void
+var_set_display_width_quiet (struct variable *v, int new_width)
+{
+ if (v->display_width != new_width)
+ {
+ v->display_width = new_width;
+ }
+}
+
void
var_set_display_width (struct variable *v, int new_width)
{
if (v->display_width != new_width)
{
- v->display_width = new_width;
- dict_var_display_width_changed (v);
- dict_var_changed (v);
+ struct variable *ov = var_clone (v);
+ var_set_display_width_quiet (v, new_width);
+ dict_var_changed (v, VAR_TRAIT_DISPLAY_WIDTH, ov);
}
}
}
}
+/* Returns a string version of alignment A, for use in PSPP command syntax. */
+const char *
+alignment_to_syntax (enum alignment a)
+{
+ switch (a)
+ {
+ case ALIGN_LEFT:
+ return "LEFT";
+
+ case ALIGN_RIGHT:
+ return "RIGHT";
+
+ case ALIGN_CENTRE:
+ return "CENTER";
+
+ default:
+ return "Invalid";
+ }
+}
+
/* Returns V's display alignment, which applies only to GUIs. */
enum alignment
var_get_alignment (const struct variable *v)
}
/* Sets V's display alignment to ALIGNMENT. */
-void
-var_set_alignment (struct variable *v, enum alignment alignment)
+static void
+var_set_alignment_quiet (struct variable *v, enum alignment alignment)
{
assert (alignment_is_valid (alignment));
v->alignment = alignment;
- dict_var_changed (v);
}
+/* Sets V's display alignment to ALIGNMENT. */
+void
+var_set_alignment (struct variable *v, enum alignment alignment)
+{
+ struct variable *ov = var_clone (v);
+ var_set_alignment_quiet (v, alignment);
+ dict_var_changed (v, VAR_TRAIT_ALIGNMENT, ov);
+}
+
+
/* Returns the default display alignment for a variable of the
given TYPE, as set by var_create. The return value can be
used to reset a variable's display alignment to the default. */
}
/* Sets V's leave setting to LEAVE. */
-void
-var_set_leave (struct variable *v, bool leave)
+static void
+var_set_leave_quiet (struct variable *v, bool leave)
{
assert (leave || !var_must_leave (v));
v->leave = leave;
- dict_var_changed (v);
}
+
+/* Sets V's leave setting to LEAVE. */
+void
+var_set_leave (struct variable *v, bool leave)
+{
+ struct variable *ov = var_clone (v);
+ var_set_leave_quiet (v, leave);
+ dict_var_changed (v, VAR_TRAIT_LEAVE, ov);
+}
+
+
/* Returns true if V must be left from case to case,
false if it can be set either way. */
bool
void
var_set_short_name (struct variable *var, size_t idx, const char *short_name)
{
+ struct variable *ov = var_clone (var);
+
assert (short_name == NULL || id_is_plausible (short_name, false));
/* Clear old short name numbered IDX, if any. */
var->short_names[idx] = utf8_to_upper (short_name);
}
- dict_var_changed (var);
+ dict_var_changed (var, VAR_TRAIT_NAME, ov);
}
/* Clears V's short names. */
void
var_clear_short_names (struct variable *v)
{
- size_t i;
-
- for (i = 0; i < v->short_name_cnt; i++)
- free (v->short_names[i]);
- free (v->short_names);
- v->short_names = NULL;
- v->short_name_cnt = 0;
+ if (v->short_name_cnt > 0)
+ {
+ size_t i;
+
+ for (i = 0; i < v->short_name_cnt; i++)
+ free (v->short_names[i]);
+ free (v->short_names);
+ v->short_names = NULL;
+ v->short_name_cnt = 0;
+ var_uncache (v);
+ }
}
\f
/* Relationship with dictionary. */
return vardict_get_case_index (v->vardict);
}
\f
-/* Returns V's auxiliary data, or a null pointer if none has been
- attached. */
-void *
-var_get_aux (const struct variable *v)
-{
- return v->aux;
-}
-
-/* Assign auxiliary data AUX to variable V, which must not
- already have auxiliary data. Before V's auxiliary data is
- cleared, AUX_DTOR(V) will be called. (var_dtor_free, below,
- may be appropriate for use as AUX_DTOR.) */
-void *
-var_attach_aux (const struct variable *v_,
- void *aux, void (*aux_dtor) (struct variable *))
-{
- struct variable *v = CONST_CAST (struct variable *, v_);
- assert (v->aux == NULL);
- assert (aux != NULL);
- v->aux = aux;
- v->aux_dtor = aux_dtor;
- return aux;
-}
-
-/* Remove auxiliary data, if any, from V, and return it, without
- calling any associated destructor. */
-void *
-var_detach_aux (struct variable *v)
-{
- void *aux = v->aux;
- assert (aux != NULL);
- v->aux = NULL;
- return aux;
-}
-
-/* Clears auxiliary data, if any, from V, and calls any
- associated destructor. */
-void
-var_clear_aux (struct variable *v)
-{
- if (v->aux != NULL)
- {
- if (v->aux_dtor != NULL)
- v->aux_dtor (v);
- v->aux = NULL;
- }
-}
-
-/* This function is appropriate for use an auxiliary data
- destructor (passed as AUX_DTOR to var_attach_aux()) for the
- case where the auxiliary data should be passed to free(). */
-void
-var_dtor_free (struct variable *v)
-{
- free (v->aux);
-}
-\f
/* Returns variable V's attribute set. The caller may examine or
modify the attribute set, but must not destroy it. Destroying
V, or calling var_set_attributes() on V, will also destroy its
}
/* Replaces variable V's attributes set by a copy of ATTRS. */
-void
-var_set_attributes (struct variable *v, const struct attrset *attrs)
+static void
+var_set_attributes_quiet (struct variable *v, const struct attrset *attrs)
{
attrset_destroy (&v->attributes);
attrset_clone (&v->attributes, attrs);
+ var_uncache (v);
}
+/* Replaces variable V's attributes set by a copy of ATTRS. */
+void
+var_set_attributes (struct variable *v, const struct attrset *attrs)
+{
+ struct variable *ov = var_clone (v);
+ var_set_attributes_quiet (v, attrs);
+ dict_var_changed (v, VAR_TRAIT_ATTRIBUTES, ov);
+}
+
+
/* Returns true if V has any custom attributes, false if it has none. */
bool
var_has_attributes (const struct variable *v)
return attrset_count (&v->attributes) > 0;
}
\f
+
+/* Creates and returns a clone of OLD_VAR. Most properties of
+ the new variable are copied from OLD_VAR, except:
+
+ - The variable's short name is not copied, because there is
+ no reason to give a new variable with potentially a new
+ name the same short name.
+
+ - The new variable is not added to OLD_VAR's dictionary by
+ default. Use dict_clone_var, instead, to do that.
+*/
+struct variable *
+var_clone (const struct variable *old_var)
+{
+ struct variable *new_var = var_create (var_get_name (old_var),
+ var_get_width (old_var));
+
+ var_set_missing_values_quiet (new_var, var_get_missing_values (old_var));
+ var_set_print_format_quiet (new_var, var_get_print_format (old_var));
+ var_set_write_format_quiet (new_var, var_get_write_format (old_var));
+ var_set_value_labels_quiet (new_var, var_get_value_labels (old_var));
+ var_set_label_quiet (new_var, var_get_label (old_var));
+ var_set_measure_quiet (new_var, var_get_measure (old_var));
+ var_set_role_quiet (new_var, var_get_role (old_var));
+ var_set_display_width_quiet (new_var, var_get_display_width (old_var));
+ var_set_alignment_quiet (new_var, var_get_alignment (old_var));
+ var_set_leave_quiet (new_var, var_get_leave (old_var));
+ var_set_attributes_quiet (new_var, var_get_attributes (old_var));
+
+ return new_var;
+}
+
+
+
/* Returns the encoding of values of variable VAR. (This is actually a
property of the dictionary.) Returns null if no specific encoding has been
set. */
{
v->vardict = NULL;
}
+\f
+struct pxd_object *
+var_save (const struct variable *var, struct pxd *pxd)
+{
+ struct pxd_builder b;
+ size_t i;
+
+ pxd_builder_init (&b, pxd);
+
+ pxd_builder_put_string (&b, var->name);
+ pxd_builder_put_u16 (&b, var->width);
+ pxd_builder_put_link (&b, mv_save (&var->miss, pxd));
+ pxd_builder_put_u32 (&b, fmt_to_uint (&var->print));
+ pxd_builder_put_u32 (&b, fmt_to_uint (&var->write));
+
+ if (var_has_value_labels (var))
+ {
+ pxd_builder_put_bool (&b, true);
+ pxd_builder_put_link (&b, val_labs_save (var->val_labs, pxd));
+ }
+ else
+ pxd_builder_put_bool (&b, false);
+
+ pxd_builder_put_string (&b, var->label != NULL ? var->label : "");
+
+ pxd_builder_put_u8 (&b, var->measure);
+ pxd_builder_put_u32 (&b, var->display_width);
+ pxd_builder_put_u8 (&b, var->alignment);
+
+ pxd_builder_put_bool (&b, var->leave);
+
+ pxd_builder_put_size_t (&b, var->short_name_cnt);
+ for (i = 0; i < var->short_name_cnt; i++)
+ pxd_builder_put_string (&b, var->short_names[i]);
+
+ pxd_builder_put_link (&b, attrset_save (&var->attributes, pxd));
+
+ return pxd_builder_commit (&b);
+}
+
+struct variable *
+var_load (struct pxd_object *object, const struct pxd *pxd)
+{
+ struct fmt_spec print, write;
+ struct missing_values mv;
+ struct variable *var;
+ struct pxd_parser p;
+ char *label;
+ char *name;
+ int width;
+ size_t i;
+
+#if 0
+ cached_var = pxd_cache_search (&var_cache, pxd_object_id (object));
+ if (cached_var != NULL)
+ {
+ size_t n;
+
+ var = var_clone (cached_var);
+
+ /* var_clone() doesn't copy short names, so we need to. */
+ n = cached_var->short_name_cnt;
+ if (n > 0)
+ {
+ size_t i;
+
+ var->short_name_cnt = n;
+ var->short_names = xmalloc (n * sizeof *var->short_names);
+ for (i = 0; i < n; i++)
+ var->short_names[i] = xstrdup (cached_var->short_names[i]);
+ }
+
+ return var;
+ }
+#endif
+
+ pxd_parser_init (&p, object, pxd);
+
+ name = pxd_parser_get_string (&p);
+ width = pxd_parser_get_u16 (&p);
+ var = var_create (name, width);
+
+ mv_load (&mv, pxd_parser_get_link (&p), pxd);
+ var_set_missing_values (var, &mv);
+ mv_destroy (&mv);
+
+ fmt_from_uint (&print, pxd_parser_get_u32 (&p));
+ var_set_print_format (var, &print);
+
+ fmt_from_uint (&write, pxd_parser_get_u32 (&p));
+ var_set_write_format (var, &write);
+
+ if (pxd_parser_get_bool (&p))
+ var->val_labs = val_labs_load (pxd_parser_get_link (&p), pxd);
+
+ label = pxd_parser_get_string (&p);
+ if (label[0])
+ var_set_label (var, label);
+ free (label);
+
+ var->measure = pxd_parser_get_u8 (&p);
+ var->display_width = pxd_parser_get_u32 (&p);
+ var->alignment = pxd_parser_get_u8 (&p);
+
+ var->leave = pxd_parser_get_bool (&p);
+
+ var->short_name_cnt = pxd_parser_get_size_t (&p);
+ var->short_names = xmalloc (var->short_name_cnt * sizeof *var->short_names);
+ for (i = 0; i < var->short_name_cnt; i++)
+ var->short_names[i] = pxd_parser_get_string (&p);
+
+ attrset_load (&var->attributes, pxd_parser_get_link (&p), pxd);
+
+ pxd_parser_destroy (&p);
+
+ return var;
+}
+
+static void
+var_uncache (struct variable *var UNUSED)
+{
+}
projects / pspp / blobdiff