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., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#include <config.h>
#include "dictionary.h"
#include "algorithm.h"
#include "alloc.h"
#include "case.h"
+#include "cat.h"
#include "error.h"
#include "hash.h"
#include "misc.h"
+#include "settings.h"
#include "str.h"
#include "value-labels.h"
#include "var.h"
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
/* A dictionary. */
struct dictionary
{
struct variable **var; /* Variables. */
size_t var_cnt, var_cap; /* Number of variables, capacity. */
struct hsh_table *name_tab; /* Variable index by name. */
- struct hsh_table *long_name_tab; /* Variable indexed by long name */
int next_value_idx; /* Index of next `union value' to allocate. */
struct variable **split; /* SPLIT FILE vars. */
size_t split_cnt; /* SPLIT FILE count. */
size_t vector_cnt; /* Number of vectors. */
};
-
-
-
-
-int
-compare_long_names(const void *a_, const void *b_, void *aux UNUSED)
-{
- const struct name_table_entry *a = a_;
- const struct name_table_entry *b = b_;
-
- return strcasecmp(a->longname, b->longname);
-}
-
-
-/* Long names use case insensitive comparison */
-unsigned int
-hash_long_name (const void *e_, void *aux UNUSED)
-{
- const struct name_table_entry *e = e_;
- unsigned int hash;
- int i;
-
- char *s = strdup(e->longname);
-
- for ( i = 0 ; i < strlen(s) ; ++i )
- s[i] = toupper(s[i]);
-
- hash = hsh_hash_string (s);
-
- free (s);
-
- return hash;
-}
-
-
-
-
-static char *make_short_name(struct dictionary *dict, const char *longname) ;
-
-
/* Creates and returns a new dictionary. */
struct dictionary *
dict_create (void)
d->var = NULL;
d->var_cnt = d->var_cap = 0;
d->name_tab = hsh_create (8, compare_var_names, hash_var_name, NULL, NULL);
- d->long_name_tab = hsh_create (8, compare_long_names, hash_long_name,
- (hsh_free_func *) free_nte, NULL);
d->next_value_idx = 0;
d->split = NULL;
d->split_cnt = 0;
d = dict_create ();
- for (i = 0; i < s->var_cnt; i++)
- dict_clone_var (d, s->var[i], s->var[i]->name, s->var[i]->longname);
+ for (i = 0; i < s->var_cnt; i++)
+ {
+ struct variable *sv = s->var[i];
+ struct variable *dv = dict_clone_var_assert (d, sv, sv->name);
+ var_set_short_name (dv, sv->short_name);
+ }
d->next_value_idx = s->next_value_idx;
d->split_cnt = s->split_cnt;
if (d->split_cnt > 0)
{
- d->split = xmalloc (d->split_cnt * sizeof *d->split);
+ d->split = xnmalloc (d->split_cnt, sizeof *d->split);
for (i = 0; i < d->split_cnt; i++)
d->split[i] = dict_lookup_var_assert (d, s->split[i]->name);
}
dict_set_label (d, dict_get_label (s));
dict_set_documents (d, dict_get_documents (s));
+ d->vector_cnt = s->vector_cnt;
+ d->vector = xnmalloc (d->vector_cnt, sizeof *d->vector);
for (i = 0; i < s->vector_cnt; i++)
- dict_create_vector (d, s->vector[i]->name,
- s->vector[i]->var, s->vector[i]->cnt);
+ {
+ struct vector *sv = s->vector[i];
+ struct vector *dv = d->vector[i] = xmalloc (sizeof *dv);
+ int j;
+
+ dv->idx = i;
+ strcpy (dv->name, sv->name);
+ dv->cnt = sv->cnt;
+ dv->var = xnmalloc (dv->cnt, sizeof *dv->var);
+ for (j = 0; j < dv->cnt; j++)
+ dv->var[j] = d->var[sv->var[j]->index];
+ }
return d;
}
d->var = NULL;
d->var_cnt = d->var_cap = 0;
hsh_clear (d->name_tab);
- if ( d->long_name_tab)
- hsh_clear (d->long_name_tab);
d->next_value_idx = 0;
free (d->split);
d->split = NULL;
dict_clear_vectors (d);
}
-/* Allocate the pointer TEXT and fill it with text representing the
- long variable name buffer. SIZE will contain the size of TEXT.
- TEXT must be freed by the caller when no longer required.
-*/
-void
-dict_get_varname_block(const struct dictionary *dict, char **text, int *size)
-{
- char *buf = 0;
- int bufsize = 0;
- struct hsh_iterator hi;
- struct name_table_entry *nte;
- short first = 1;
-
- for ( nte = hsh_first(dict->long_name_tab, &hi);
- nte;
- nte = hsh_next(dict->long_name_tab, &hi))
- {
- bufsize += strlen(nte->name) + strlen(nte->longname) + 2;
- buf = xrealloc(buf, bufsize + 1);
- if ( first )
- strcpy(buf, "");
- first = 0;
-
- strcat(buf, nte->name);
- strcat(buf, "=");
- strcat(buf, nte->longname);
- strcat(buf, "\t");
- }
-
- if ( bufsize > 0 )
- {
- /* Loose the final delimiting TAB */
- buf[bufsize]='\0';
- bufsize--;
- }
-
- *text = buf;
- *size = bufsize;
-}
-
-/* Add a new entry into the dictionary's long name table, and update the
- corresponding variable with the relevant long name.
-*/
-void
-dict_add_longvar_entry(struct dictionary *d,
- const char *name,
- const char *longname)
-{
- struct variable *v;
- assert ( name ) ;
- assert ( longname );
- struct name_table_entry *nte = xmalloc (sizeof (struct name_table_entry));
- nte->longname = strdup(longname);
- nte->name = strdup(name);
-
- /* Look up the name in name_tab */
- v = hsh_find ( d->name_tab, name);
- if ( !v )
- {
- msg (FE, _("The entry \"%s\" in the variable name map, has no corresponding variable"), name);
- return ;
- }
- assert ( 0 == strcmp(v->name, name) );
- v->longname = nte->longname;
-
- hsh_insert(d->long_name_tab, nte);
-}
-
-/* Destroy and free up an nte */
-void
-free_nte(struct name_table_entry *nte)
-{
- assert(nte);
- free(nte->longname);
- free(nte->name);
- free(nte);
-}
-
-
/* Destroys the aux data for every variable in D, by calling
var_clear_aux() for each variable. */
void
{
dict_clear (d);
hsh_destroy (d->name_tab);
- hsh_destroy (d->long_name_tab);
free (d);
}
}
if (!(exclude_classes & (1u << dict_class_from_id (d->var[i]->name))))
count++;
- *vars = xmalloc (count * sizeof **vars);
+ *vars = xnmalloc (count, sizeof **vars);
*cnt = 0;
for (i = 0; i < d->var_cnt; i++)
if (!(exclude_classes & (1u << dict_class_from_id (d->var[i]->name))))
}
-static struct variable * dict_create_var_x (struct dictionary *d,
- const char *name, int width,
- short name_is_short) ;
-
-/* Creates and returns a new variable in D with the given LONGNAME
- and WIDTH. Returns a null pointer if the given LONGNAME would
- duplicate that of an existing variable in the dictionary.
-*/
-struct variable *
-dict_create_var (struct dictionary *d, const char *longname, int width)
-{
- return dict_create_var_x(d, longname, width, 0);
-}
-
-
-/* Creates and returns a new variable in D with the given SHORTNAME and
- WIDTH. The long name table is not updated */
-struct variable *
-dict_create_var_from_short (struct dictionary *d, const char *shortname,
- int width)
-{
- return dict_create_var_x(d, shortname, width, 1);
-}
-
-
-
/* Creates and returns a new variable in D with the given NAME
- and WIDTH.
- If NAME_IS_SHORT, assume NAME is the short name. Otherwise assumes
- NAME is the long name, and creates the corresponding entry in the
- Dictionary's lookup name table .
- Returns a null pointer if the given NAME would
- duplicate that of an existing variable in the dictionary.
-
-*/
-static struct variable *
-dict_create_var_x (struct dictionary *d, const char *name, int width,
- short name_is_short)
+ and WIDTH. Returns a null pointer if the given NAME would
+ duplicate that of an existing variable in the dictionary. */
+struct variable *
+dict_create_var (struct dictionary *d, const char *name, int width)
{
struct variable *v;
assert (d != NULL);
assert (name != NULL);
- assert (strlen (name) >= 1);
-
assert (width >= 0 && width < 256);
-
- if ( name_is_short )
- assert(strlen (name) <= SHORT_NAME_LEN);
- else
- assert(strlen (name) <= LONG_NAME_LEN);
+ assert (var_is_valid_name(name,0));
+
/* Make sure there's not already a variable by that name. */
if (dict_lookup_var (d, name) != NULL)
return NULL;
/* Allocate and initialize variable. */
v = xmalloc (sizeof *v);
-
- if ( name_is_short )
- {
- strncpy (v->name, name, sizeof v->name);
- v->name[SHORT_NAME_LEN] = '\0';
- }
- else
- {
- const char *sn = make_short_name(d, name);
- strncpy(v->name, sn, SHORT_NAME_LEN);
- free(sn);
- }
-
-
- v->index = d->var_cnt;
+ str_copy_trunc (v->name, sizeof v->name, name);
v->type = width == 0 ? NUMERIC : ALPHA;
v->width = width;
v->fv = d->next_value_idx;
v->nv = width == 0 ? 1 : DIV_RND_UP (width, 8);
v->init = 1;
v->reinit = dict_class_from_id (v->name) != DC_SCRATCH;
- v->miss_type = MISSING_NONE;
+ v->index = d->var_cnt;
+ mv_init (&v->miss, width);
if (v->type == NUMERIC)
{
- v->print.type = FMT_F;
- v->print.w = 8;
- v->print.d = 2;
-
+ v->print = f8_2;
v->alignment = ALIGN_RIGHT;
v->display_width = 8;
v->measure = MEASURE_SCALE;
}
else
{
- v->print.type = FMT_A;
- v->print.w = v->width;
- v->print.d = 0;
-
+ v->print = make_output_format (FMT_A, v->width, 0);
v->alignment = ALIGN_LEFT;
v->display_width = 8;
v->measure = MEASURE_NOMINAL;
v->write = v->print;
v->val_labs = val_labs_create (v->width);
v->label = NULL;
+ var_clear_short_name (v);
v->aux = NULL;
v->aux_dtor = NULL;
+ v->obs_vals = NULL;
/* Update dictionary. */
if (d->var_cnt >= d->var_cap)
{
d->var_cap = 8 + 2 * d->var_cap;
- d->var = xrealloc (d->var, d->var_cap * sizeof *d->var);
+ d->var = xnrealloc (d->var, d->var_cap, sizeof *d->var);
}
d->var[v->index] = v;
d->var_cnt++;
hsh_force_insert (d->name_tab, v);
- if ( ! name_is_short)
- dict_add_longvar_entry(d, v->name, name);
-
d->next_value_idx += v->nv;
return v;
and WIDTH. Assert-fails if the given NAME would duplicate
that of an existing variable in the dictionary. */
struct variable *
-dict_create_var_assert (struct dictionary *d, const char *longname, int width)
+dict_create_var_assert (struct dictionary *d, const char *name, int width)
{
- struct variable *v = dict_create_var (d, longname, width);
+ struct variable *v = dict_create_var (d, name, width);
assert (v != NULL);
return v;
}
-/* Creates a new variable in D with longname LONGNAME, as a copy of
- existing variable OV, which need not be in D or in any
- dictionary.
- If SHORTNAME is non null, it will be used as the short name
- otherwise a new short name will be generated.
-*/
+/* Creates and returns a new variable in D with name NAME, as a
+ copy of existing variable OV, which need not be in D or in any
+ dictionary. Returns a null pointer if the given NAME would
+ duplicate that of an existing variable in the dictionary. */
struct variable *
dict_clone_var (struct dictionary *d, const struct variable *ov,
- const char *name, const char *longname)
+ const char *name)
{
struct variable *nv;
assert (d != NULL);
assert (ov != NULL);
- assert (strlen (longname) <= LONG_NAME_LEN);
-
- struct name_table_entry *nte = xmalloc (sizeof (struct name_table_entry));
-
- nte->longname = strdup(longname);
- if ( name )
- {
- assert (strlen (name) >= 1);
- assert (strlen (name) <= SHORT_NAME_LEN);
- nte->name = strdup(name);
- }
- else
- nte->name = make_short_name(d, longname);
+ assert (name != NULL);
+ assert (strlen (name) >= 1);
+ assert (strlen (name) <= LONG_NAME_LEN);
- nv = dict_create_var_from_short (d, nte->name, ov->width);
+ nv = dict_create_var (d, name, ov->width);
if (nv == NULL)
return NULL;
- hsh_insert(d->long_name_tab, nte);
- nv->longname = nte->longname;
-
+ /* Copy most members not copied via dict_create_var().
+ short_name[] is intentionally not copied, because there is
+ no reason to give a new variable with potentially a new name
+ the same short name. */
nv->init = 1;
nv->reinit = ov->reinit;
- nv->miss_type = ov->miss_type;
- memcpy (nv->missing, ov->missing, sizeof nv->missing);
+ mv_copy (&nv->miss, &ov->miss);
nv->print = ov->print;
nv->write = ov->write;
val_labs_destroy (nv->val_labs);
nv->val_labs = val_labs_copy (ov->val_labs);
if (ov->label != NULL)
nv->label = xstrdup (ov->label);
-
- nv->alignment = ov->alignment;
nv->measure = ov->measure;
nv->display_width = ov->display_width;
+ nv->alignment = ov->alignment;
return nv;
}
-/* Changes the name of V in D to name NEW_NAME. Assert-fails if
- a variable named NEW_NAME is already in D, except that
- NEW_NAME may be the same as V's existing name. */
-void
-dict_rename_var (struct dictionary *d, struct variable *v,
- const char *new_name)
+/* Creates and returns a new variable in D with name NAME, as a
+ copy of existing variable OV, which need not be in D or in any
+ dictionary. Assert-fails if the given NAME would duplicate
+ that of an existing variable in the dictionary. */
+struct variable *
+dict_clone_var_assert (struct dictionary *d, const struct variable *ov,
+ const char *name)
{
- assert (d != NULL);
+ struct variable *v = dict_clone_var (d, ov, name);
assert (v != NULL);
- assert (new_name != NULL);
- assert (strlen (new_name) >= 1 && strlen (new_name) <= SHORT_NAME_LEN);
- assert (dict_contains_var (d, v));
-
- if (!strcmp (v->name, new_name))
- return;
-
- assert (dict_lookup_var (d, new_name) == NULL);
-
- hsh_force_delete (d->name_tab, v);
- strncpy (v->name, new_name, sizeof v->name);
- v->name[SHORT_NAME_LEN] = '\0';
- hsh_force_insert (d->name_tab, v);
+ return v;
}
/* Returns the variable named NAME in D, or a null pointer if no
dict_lookup_var (const struct dictionary *d, const char *name)
{
struct variable v;
- struct variable *vr;
- char *short_name;
- struct name_table_entry key;
- struct name_table_entry *nte;
-
assert (d != NULL);
assert (name != NULL);
- assert (strlen (name) >= 1 && strlen (name) <= LONG_NAME_LEN);
-
- key.longname = name;
- nte = hsh_find (d->long_name_tab, &key);
-
- if ( ! nte )
- {
- return 0;
- }
-
- short_name = nte->name ;
-
- strncpy (v.name, short_name, sizeof v.name);
- v.name[SHORT_NAME_LEN] = '\0';
-
- vr = hsh_find (d->name_tab, &v);
- return vr;
+ str_copy_trunc (v.name, sizeof v.name, name);
+ return hsh_find (d->name_tab, &v);
}
-
/* Returns the variable named NAME in D. Assert-fails if no
variable has that name. */
struct variable *
assert (d != NULL);
assert (v != NULL);
assert (dict_contains_var (d, v));
- assert (d->var[v->index] == v);
/* Delete aux data. */
var_clear_aux (v);
/* Free memory. */
val_labs_destroy (v->val_labs);
+ cat_stored_values_destroy (v);
free (v->label);
free (v);
}
dict_delete_var (d, *vars++);
}
+/* Deletes scratch variables from dictionary D. */
+void
+dict_delete_scratch_vars (struct dictionary *d)
+{
+ int i;
+
+ /* FIXME: this can be done in O(count) time, but this algorithm
+ is O(count**2). */
+ assert (d != NULL);
+
+ for (i = 0; i < d->var_cnt; )
+ if (dict_class_from_id (d->var[i]->name) == DC_SCRATCH)
+ dict_delete_var (d, d->var[i]);
+ else
+ i++;
+}
+
+/* Moves V to 0-based position IDX in D. Other variables in D,
+ if any, retain their relative positions. Runs in time linear
+ in the distance moved. */
+void
+dict_reorder_var (struct dictionary *d, struct variable *v,
+ size_t new_index)
+{
+ size_t min_idx, max_idx;
+ size_t i;
+
+ assert (d != NULL);
+ assert (v != NULL);
+ assert (dict_contains_var (d, v));
+ assert (new_index < d->var_cnt);
+
+ move_element (d->var, d->var_cnt, sizeof *d->var, v->index, new_index);
+
+ min_idx = min (v->index, new_index);
+ max_idx = max (v->index, new_index);
+ for (i = min_idx; i <= max_idx; i++)
+ d->var[i]->index = i;
+}
+
/* Reorders the variables in D, placing the COUNT variables
listed in ORDER in that order at the beginning of D. The
other variables in D, if any, retain their relative
assert (count == 0 || order != NULL);
assert (count <= d->var_cnt);
- new_var = xmalloc (d->var_cnt * sizeof *new_var);
+ new_var = xnmalloc (d->var_cnt, sizeof *new_var);
memcpy (new_var, order, count * sizeof *new_var);
for (i = 0; i < count; i++)
{
d->var = new_var;
}
+/* Changes the name of V in D to name NEW_NAME. Assert-fails if
+ a variable named NEW_NAME is already in D, except that
+ NEW_NAME may be the same as V's existing name. */
+void
+dict_rename_var (struct dictionary *d, struct variable *v,
+ const char *new_name)
+{
+ assert (d != NULL);
+ assert (v != NULL);
+ assert (new_name != NULL);
+ assert (var_is_valid_name (new_name, false));
+ assert (dict_contains_var (d, v));
+ assert (!compare_var_names (v->name, new_name, NULL)
+ || dict_lookup_var (d, new_name) == NULL);
+
+ hsh_force_delete (d->name_tab, v);
+ str_copy_trunc (v->name, sizeof v->name, new_name);
+ hsh_force_insert (d->name_tab, v);
+
+ if (get_algorithm () == ENHANCED)
+ var_clear_short_name (v);
+}
+
/* Renames COUNT variables specified in VARS to the names given
in NEW_NAMES within dictionary D. If the renaming would
result in a duplicate variable name, returns zero and stores a
size_t i;
int success = 1;
-
assert (d != NULL);
assert (count == 0 || vars != NULL);
assert (count == 0 || new_names != NULL);
-
- old_names = xmalloc (count * sizeof *old_names);
+ /* Remove the variables to be renamed from the name hash,
+ save their names, and rename them. */
+ old_names = xnmalloc (count, sizeof *old_names);
for (i = 0; i < count; i++)
{
assert (d->var[vars[i]->index] == vars[i]);
+ assert (var_is_valid_name (new_names[i], false));
hsh_force_delete (d->name_tab, vars[i]);
old_names[i] = xstrdup (vars[i]->name);
+ strcpy (vars[i]->name, new_names[i]);
}
-
+
+ /* Add the renamed variables back into the name hash,
+ checking for conflicts. */
for (i = 0; i < count; i++)
{
- char *sn;
- struct name_table_entry key;
- struct name_table_entry *nte;
assert (new_names[i] != NULL);
assert (*new_names[i] != '\0');
- assert (strlen (new_names[i]) <= LONG_NAME_LEN );
-
- sn = make_short_name(d, new_names[i]);
- strncpy(vars[i]->name, sn, SHORT_NAME_LEN);
- free(sn);
-
+ assert (strlen (new_names[i]) >= 1);
+ assert (strlen (new_names[i]) <= LONG_NAME_LEN);
-
- key.longname = vars[i]->longname;
- nte = hsh_find (d->long_name_tab, &key);
-
- free( nte->longname ) ;
- nte->longname = strdup ( new_names[i]);
- vars[i]->longname = nte->longname;
-
- if (hsh_insert (d->name_tab, vars[i]) != NULL )
+ if (hsh_insert (d->name_tab, vars[i]) != NULL)
{
+ /* There is a name conflict.
+ Back out all the name changes that have already
+ taken place, and indicate failure. */
size_t fail_idx = i;
if (err_name != NULL)
*err_name = new_names[i];
{
strcpy (vars[i]->name, old_names[i]);
hsh_force_insert (d->name_tab, vars[i]);
-
- key.longname = vars[i]->longname;
- nte = hsh_find (d->long_name_tab, &key);
-
- free( nte->longname ) ;
- nte->longname = strdup ( old_names[i]);
- vars[i]->longname = nte->longname;
-
}
success = 0;
- break;
+ goto done;
}
}
+ /* Clear short names. */
+ if (get_algorithm () == ENHANCED)
+ for (i = 0; i < count; i++)
+ var_clear_short_name (vars[i]);
+
+ done:
+ /* Free the old names we kept around. */
for (i = 0; i < count; i++)
free (old_names[i]);
free (old_names);
else
{
double w = case_num (c, d->weight->fv);
- if ( w < 0.0 || w == SYSMIS || is_num_user_missing(w, d->weight) )
+ if (w < 0.0 || mv_is_num_missing (&d->weight->miss, w))
w = 0.0;
if ( w == 0.0 && *warn_on_invalid ) {
*warn_on_invalid = 0;
i++;
}
else
- dict_delete_var (default_dict, v);
+ dict_delete_var (d, v);
}
}
size_t next_value_idx;
int *idx_to_fv;
- idx_to_fv = xmalloc (d->var_cnt * sizeof *idx_to_fv);
+ idx_to_fv = xnmalloc (d->var_cnt, sizeof *idx_to_fv);
next_value_idx = 0;
for (i = 0; i < d->var_cnt; i++)
{
assert (cnt == 0 || split != NULL);
d->split_cnt = cnt;
- d->split = xrealloc (d->split, cnt * sizeof *d->split);
+ d->split = xnrealloc (d->split, cnt, sizeof *d->split);
memcpy (d->split, split, cnt * sizeof *d->split);
}
struct variable **var, size_t cnt)
{
struct vector *vector;
+ size_t i;
assert (d != NULL);
assert (name != NULL);
- assert (strlen (name) > 0 && strlen (name) <= SHORT_NAME_LEN );
+ assert (var_is_valid_name (name, false));
assert (var != NULL);
assert (cnt > 0);
if (dict_lookup_vector (d, name) != NULL)
return 0;
- d->vector = xrealloc (d->vector, (d->vector_cnt + 1) * sizeof *d->vector);
+ d->vector = xnrealloc (d->vector, d->vector_cnt + 1, sizeof *d->vector);
vector = d->vector[d->vector_cnt] = xmalloc (sizeof *vector);
vector->idx = d->vector_cnt++;
- strncpy (vector->name, name, SHORT_NAME_LEN);
- vector->name[SHORT_NAME_LEN] = '\0';
- vector->var = xmalloc (cnt * sizeof *var);
- memcpy (vector->var, var, cnt * sizeof *var);
+ str_copy_trunc (vector->name, sizeof vector->name, name);
+ vector->var = xnmalloc (cnt, sizeof *var);
+ for (i = 0; i < cnt; i++)
+ {
+ assert (dict_contains_var (d, var[i]));
+ vector->var[i] = var[i];
+ }
vector->cnt = cnt;
return 1;
assert (name != NULL);
for (i = 0; i < d->vector_cnt; i++)
- if (!strcmp (d->vector[i]->name, name))
+ if (!strcasecmp (d->vector[i]->name, name))
return d->vector[i];
return NULL;
}
d->vector_cnt = 0;
}
-
-static const char * quasi_base27(int i);
-
-
-/* Convert I to quasi base 27
- The result is a staticly allocated string.
-*/
-static const char *
-quasi_base27(int i)
+/* Compares two strings. */
+static int
+compare_strings (const void *a, const void *b, void *aux UNUSED)
{
- static char result[SHORT_NAME_LEN + 1];
- static char reverse[SHORT_NAME_LEN + 1];
-
- /* FIXME: check the result cant overflow these arrays */
-
- char *s = result ;
- const int radix = 27;
- int units;
-
- /* and here's the quasi-ness of this routine */
- i = i + ( i / radix );
-
- strcpy(result,"");
- do {
- units = i % radix;
- *s++ = (units > 0 ) ? units + 'A' - 1 : 'A';
- i = i / radix;
- } while (i > 0 ) ;
- *s = '\0';
-
- /* Reverse the result */
- i = strlen(result);
- s = reverse;
- while(i >= 0)
- *s++ = result[--i];
- *s = '\0';
-
- return reverse;
+ return strcmp (a, b);
}
-
-/* Generate a short name, given a long name.
- The return value of this function must be freed by the caller.
-*/
-static char *
-make_short_name(struct dictionary *dict, const char *longname)
+/* Hashes a string. */
+static unsigned
+hash_string (const void *s, void *aux UNUSED)
{
- int i = 0;
- char *p;
-
+ return hsh_hash_string (s);
+}
- char *d = xmalloc ( SHORT_NAME_LEN + 1);
+/* Assigns a valid, unique short_name[] to each variable in D.
+ Each variable whose actual name is short has highest priority
+ for that short name. Otherwise, variables with an existing
+ short_name[] have the next highest priority for a given short
+ name; if it is already taken, then the variable is treated as
+ if short_name[] had been empty. Otherwise, long names are
+ truncated to form short names. If that causes conflicts,
+ variables are renamed as PREFIX_A, PREFIX_B, and so on. */
+void
+dict_assign_short_names (struct dictionary *d)
+{
+ struct hsh_table *short_names;
+ size_t i;
- /* Truncate the name */
- strncpy(d, longname, SHORT_NAME_LEN);
- d[SHORT_NAME_LEN] = '\0';
+ /* Give variables whose names are short the corresponding short
+ names, and clear short_names[] that conflict with a variable
+ name. */
+ for (i = 0; i < d->var_cnt; i++)
+ {
+ struct variable *v = d->var[i];
+ if (strlen (v->name) <= SHORT_NAME_LEN)
+ var_set_short_name (v, v->name);
+ else if (dict_lookup_var (d, v->short_name) != NULL)
+ var_clear_short_name (v);
+ }
- /* Convert to upper case */
- for ( p = d; *p ; ++p )
- *p = toupper(*p);
+ /* Each variable with an assigned short_name[] now gets it
+ unless there is a conflict. */
+ short_names = hsh_create (d->var_cnt, compare_strings, hash_string,
+ NULL, NULL);
+ for (i = 0; i < d->var_cnt; i++)
+ {
+ struct variable *v = d->var[i];
+ if (v->short_name[0] && hsh_insert (short_names, v->short_name) != NULL)
+ var_clear_short_name (v);
+ }
+
+ /* Now assign short names to remaining variables. */
+ for (i = 0; i < d->var_cnt; i++)
+ {
+ struct variable *v = d->var[i];
+ if (v->short_name[0] == '\0')
+ {
+ int sfx;
- /* If a variable with that name already exists, then munge it
- until there's no conflict */
- while (0 != hsh_find (dict->name_tab, d))
- {
- const char *suffix = quasi_base27(i++);
+ /* Form initial short_name. */
+ var_set_short_name (v, v->name);
- d[SHORT_NAME_LEN - strlen(suffix) - 1 ] = '_';
- d[SHORT_NAME_LEN - strlen(suffix) ] = '\0';
- strcat(d, suffix);
- }
+ /* Try _A, _B, ... _AA, _AB, etc., if needed. */
+ for (sfx = 0; hsh_insert (short_names, v->short_name) != NULL; sfx++)
+ var_set_short_name_suffix (v, v->name, sfx);
+ }
+ }
- return d;
+ /* Get rid of hash table. */
+ hsh_destroy (short_names);
}
-
-
-
-