#include <libpspp/pool.h>
#include <libpspp/str.h>
+#include "minmax.h"
#include "xalloc.h"
#include "gettext.h"
char *trans; /* 256-byte character set translation table. */
int var_cnt; /* Number of variables. */
int weight_index; /* 0-based index of weight variable, or -1. */
- int *widths; /* Variable widths, 0 for numeric. */
- size_t value_cnt; /* Number of `value's per case. */
+ struct caseproto *proto; /* Format of output cases. */
bool ok; /* Set false on I/O error. */
};
r->weight_index = -1;
r->trans = NULL;
r->var_cnt = 0;
- r->widths = NULL;
- r->value_cnt = 0;
+ r->proto = NULL;
r->ok = true;
if (setjmp (r->bail_out))
goto error;
if (!match (r, 'F'))
error (r, _("Data record expected."));
- r->value_cnt = dict_get_next_value_idx (*dict);
- return casereader_create_sequential (NULL, r->value_cnt, CASENUMBER_MAX,
+ r->proto = caseproto_ref_pool (dict_get_proto (*dict), r->pool);
+ return casereader_create_sequential (NULL, r->proto, CASENUMBER_MAX,
&por_file_casereader_class, r);
error:
*buf = '\0';
}
+
+/* Reads a string into BUF, which must have room for 256
+ characters.
+ Returns the number of bytes read.
+*/
+static size_t
+read_bytes (struct pfm_reader *r, uint8_t *buf)
+{
+ int n = read_int (r);
+ if (n < 0 || n > 255)
+ error (r, _("Bad string length %d."), n);
+
+ while (n-- > 0)
+ {
+ *buf++ = r->cc;
+ advance (r);
+ }
+ return n;
+}
+
+
+
/* Reads a string and returns a copy of it allocated from R's
pool. */
static char *
return fmt_default_for_width (var_get_width (v));
}
-static union value parse_value (struct pfm_reader *, struct variable *);
+static void parse_value (struct pfm_reader *, int width, union value *);
/* Read information on all the variables. */
static void
r->var_cnt = read_int (r);
if (r->var_cnt <= 0)
error (r, _("Invalid number of variables %d."), r->var_cnt);
- r->widths = pool_nalloc (r->pool, r->var_cnt, sizeof *r->widths);
/* Purpose of this value is unknown. It is typically 161. */
read_int (r);
width = read_int (r);
if (width < 0)
error (r, _("Invalid variable width %d."), width);
- r->widths[i] = width;
read_string (r, name);
for (j = 0; j < 6; j++)
var_set_write_format (v, &write);
/* Range missing values. */
- mv_init (&miss, var_get_width (v));
+ mv_init (&miss, width);
if (match (r, 'B'))
{
double x = read_float (r);
/* Single missing values. */
while (match (r, '8'))
{
- union value value = parse_value (r, v);
+ int mv_width = MIN (width, 8);
+ union value value;
+
+ parse_value (r, mv_width, &value);
+ value_resize (&value, mv_width, width);
mv_add_value (&miss, &value);
+ value_destroy (&value, width);
}
var_set_missing_values (v, &miss);
+ mv_destroy (&miss);
if (match (r, 'C'))
{
}
}
-/* Parse a value for variable VV into value V. */
-static union value
-parse_value (struct pfm_reader *r, struct variable *vv)
+/* Parse a value of with WIDTH into value V. */
+static void
+parse_value (struct pfm_reader *r, int width, union value *v)
{
- union value v;
-
- if (var_is_alpha (vv))
+ value_init (v, width);
+ if (width > 0)
{
- char string[256];
- read_string (r, string);
- buf_copy_str_rpad (v.s, 8, string);
+ uint8_t buf[256];
+ size_t n_bytes = read_bytes (r, buf);
+ value_copy_buf_rpad (v, width, buf, n_bytes, ' ');
}
else
- v.f = read_float (r);
-
- return v;
+ v->f = read_float (r);
}
/* Parse a value label record and return success. */
char label[256];
int j;
- val = parse_value (r, v[0]);
+ parse_value (r, var_get_width (v[0]), &val);
read_string (r, label);
/* Assign the value label to each variable. */
for (j = 0; j < nv; j++)
- {
- struct variable *var = v[j];
+ var_replace_value_label (v[j], &val, label);
- if (!var_is_long_string (var))
- var_replace_value_label (var, &val, label);
- }
+ value_destroy (&val, var_get_width (v[0]));
}
}
}
}
-/* Reads one case from portable file R into C. */
-static bool
-por_file_casereader_read (struct casereader *reader, void *r_, struct ccase *c)
+/* Reads and returns one case from portable file R. Returns a
+ null pointer on failure. */
+static struct ccase *
+por_file_casereader_read (struct casereader *reader, void *r_)
{
struct pfm_reader *r = r_;
+ struct ccase *volatile c;
size_t i;
- size_t idx;
- case_create (c, casereader_get_value_cnt (reader));
+ c = case_create (r->proto);
setjmp (r->bail_out);
if (!r->ok)
{
casereader_force_error (reader);
- case_destroy (c);
- return false;
+ case_unref (c);
+ return NULL;
}
/* Check for end of file. */
if (r->cc == 'Z')
{
- case_destroy (c);
- return false;
+ case_unref (c);
+ return NULL;
}
- idx = 0;
for (i = 0; i < r->var_cnt; i++)
{
- int width = r->widths[i];
+ int width = caseproto_get_width (r->proto, i);
if (width == 0)
- {
- case_data_rw_idx (c, idx)->f = read_float (r);
- idx++;
- }
+ case_data_rw_idx (c, i)->f = read_float (r);
else
{
- char string[256];
- read_string (r, string);
- buf_copy_str_rpad (case_data_rw_idx (c, idx)->s, width, string);
- idx += DIV_RND_UP (width, MAX_SHORT_STRING);
+ uint8_t buf[256];
+ size_t n_bytes = read_bytes (r, buf);
+ u8_buf_copy_rpad (case_str_rw_idx (c, i), width, buf, n_bytes, ' ');
}
}
- return true;
+ return c;
}
/* Returns true if FILE is an SPSS portable file,
projects / pspp-builds.git / blobdiff