-/* PSPP - computes sample statistics.
+/* PSPP - a program for statistical analysis.
Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
- Code for parsing floating-point numbers adapted from GNU C
- library.
- 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 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 3 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.
+ 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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "por-file-reader.h"
-#include <libpspp/message.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
+
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <setjmp.h>
-#include <libpspp/alloc.h>
+#include <stdarg.h>
#include <stdbool.h>
-#include "case.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <data/casereader-provider.h>
+#include <data/casereader.h>
+#include <data/dictionary.h>
+#include <data/file-handle-def.h>
+#include <data/format.h>
+#include <data/missing-values.h>
+#include <data/value-labels.h>
+#include <data/variable.h>
+#include <libpspp/alloc.h>
#include <libpspp/compiler.h>
-#include "dictionary.h"
-#include "file-handle-def.h"
-#include "format.h"
-#include "missing-values.h"
#include <libpspp/hash.h>
#include <libpspp/magic.h>
+#include <libpspp/message.h>
#include <libpspp/misc.h>
#include <libpspp/pool.h>
#include <libpspp/str.h>
-#include "value-labels.h"
-#include "variable.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
int var_cnt; /* Number of variables. */
int weight_index; /* 0-based index of weight variable, or -1. */
int *widths; /* Variable widths, 0 for numeric. */
- int value_cnt; /* Number of `value's per case. */
+ size_t value_cnt; /* Number of `value's per case. */
bool ok; /* Set false on I/O error. */
};
+static struct casereader_class por_file_casereader_class;
+
static void
error (struct pfm_reader *r, const char *msg,...)
PRINTF_FORMAT (2, 3)
m.where.file_name = NULL;
m.where.line_number = 0;
m.text = ds_cstr (&text);
-
+
msg_emit (&m);
r->ok = false;
}
/* Closes portable file reader R, after we're done with it. */
-void
-pfm_close_reader (struct pfm_reader *r)
+static void
+por_file_casereader_destroy (struct casereader *reader UNUSED, void *r_)
{
- if (r != NULL)
- pool_destroy (r->pool);
+ struct pfm_reader *r = r_;
+ pool_destroy (r->pool);
}
/* Read a single character into cur_char. */
while ((c = getc (r->file)) == '\r' || c == '\n')
continue;
if (c == EOF)
- error (r, _("unexpected end of file"));
+ error (r, _("unexpected end of file"));
if (r->trans != NULL)
- c = r->trans[c];
+ c = r->trans[c];
r->cc = c;
}
/* Reads the dictionary from file with handle H, and returns it in a
dictionary structure. This dictionary may be modified in order to
rename, reorder, and delete variables, etc. */
-struct pfm_reader *
+struct casereader *
pfm_open_reader (struct file_handle *fh, struct dictionary **dict,
struct pfm_read_info *info)
{
fh_get_file_name (r->fh), strerror (errno));
goto error;
}
-
+
/* Read header, version, date info, product id, variables. */
read_header (r);
read_version_data (r, info);
if (!match (r, 'F'))
error (r, _("Data record expected."));
- return r;
+ r->value_cnt = dict_get_next_value_idx (*dict);
+ return casereader_create_sequential (NULL, r->value_cnt, CASENUMBER_MAX,
+ &por_file_casereader_class, r);
error:
- pfm_close_reader (r);
+ pool_destroy (r->pool);
dict_destroy (*dict);
*dict = NULL;
return NULL;
/* Returns the value of base-30 digit C,
or -1 if C is not a base-30 digit. */
static int
-base_30_value (unsigned char c)
+base_30_value (unsigned char c)
{
static const char base_30_digits[] = "0123456789ABCDEFGHIJKLMNOPQRST";
const char *p = strchr (base_30_digits, c);
/* Check that we had some digits. */
if (!got_digit)
- error (r, "Number expected.");
+ error (r, _("Number expected."));
/* Get exponent if any. */
if (r->cc == '+' || r->cc == '-')
return negative ? -num : num;
}
-
+
/* Read an integer and return its value. */
static int
read_int (struct pfm_reader *r)
int n = read_int (r);
if (n < 0 || n > 255)
error (r, _("Bad string length %d."), n);
-
+
while (n-- > 0)
{
*buf++ = r->cc;
/* Reads a string and returns a copy of it allocated from R's
pool. */
static char *
-read_pool_string (struct pfm_reader *r)
+read_pool_string (struct pfm_reader *r)
{
char string[256];
read_string (r, string);
/* Read and ignore vanity splash strings. */
for (i = 0; i < 200; i++)
advance (r);
-
+
/* Skip the first 64 characters of the translation table.
We don't care about these. They are probably all set to
'0', marking them as untranslatable, and that would screw
/* Read the rest of the translation table. */
trans = pool_malloc (r->pool, 256);
memset (trans, 0, 256);
- for (; i < 256; i++)
+ for (; i < 256; i++)
{
unsigned char c;
/* Set up the translation table, then read the first
translated character. */
r->trans = trans;
- advance (r);
+ advance (r);
/* Skip and verify signature. */
- for (i = 0; i < 8; i++)
- if (!match (r, "SPSSPORT"[i]))
+ for (i = 0; i < 8; i++)
+ if (!match (r, "SPSSPORT"[i]))
{
msg (SE, _("%s: Not a portable file."), fh_get_file_name (r->fh));
longjmp (r->bail_out, 1);
/* Read file. */
if (!match (r, 'A'))
- error (r, "Unrecognized version code `%c'.", r->cc);
+ error (r, _("Unrecognized version code `%c'."), r->cc);
date = read_pool_string (r);
time = read_pool_string (r);
product = match (r, '1') ? read_pool_string (r) : empty_string;
/* Validate file. */
if (strlen (date) != 8)
- error (r, _("Bad date string length %d."), strlen (date));
+ error (r, _("Bad date string length %d."), (int) strlen (date));
if (strlen (time) != 6)
- error (r, _("Bad time string length %d."), strlen (time));
+ error (r, _("Bad time string length %d."), (int) strlen (time));
/* Save file info. */
- if (info != NULL)
+ if (info != NULL)
{
/* Date. */
- for (i = 0; i < 8; i++)
+ for (i = 0; i < 8; i++)
{
static const int map[] = {6, 7, 8, 9, 3, 4, 0, 1};
- info->creation_date[map[i]] = date[i];
+ info->creation_date[map[i]] = date[i];
}
info->creation_date[2] = info->creation_date[5] = ' ';
info->creation_date[10] = 0;
{
char *weight_name = NULL;
int i;
-
+
if (!match (r, '4'))
error (r, _("Expected variable count record."));
-
+
r->var_cnt = read_int (r);
if (r->var_cnt <= 0 || r->var_cnt == NOT_INT)
error (r, _("Invalid number of variables %d."), r->var_cnt);
if (match (r, '6'))
{
weight_name = read_pool_string (r);
- if (strlen (weight_name) > SHORT_NAME_LEN)
+ if (strlen (weight_name) > SHORT_NAME_LEN)
error (r, _("Weight variable name (%s) truncated."), weight_name);
}
-
+
for (i = 0; i < r->var_cnt; i++)
{
int width;
str_uppercase (name);
if (width < 0 || width > 255)
- error (r, "Bad width %d for variable %s.", width, name);
+ error (r, _("Bad width %d for variable %s."), width, name);
v = dict_create_var (dict, name, width);
if (v == NULL)
/* Range missing values. */
mv_init (&miss, var_get_width (v));
- if (match (r, 'B'))
+ if (match (r, 'B'))
{
double x = read_float (r);
double y = read_float (r);
mv_add_num_range (&miss, LOWEST, read_float (r));
/* Single missing values. */
- while (match (r, '8'))
+ while (match (r, '8'))
{
union value value = parse_value (r, v);
- mv_add_value (&miss, &value);
+ mv_add_value (&miss, &value);
}
var_set_missing_values (v, &miss);
- if (match (r, 'C'))
+ if (match (r, 'C'))
{
char label[256];
read_string (r, label);
}
}
- if (weight_name != NULL)
+ if (weight_name != NULL)
{
struct variable *weight_var = dict_lookup_var (dict, weight_name);
if (weight_var == NULL)
parse_value (struct pfm_reader *r, struct variable *vv)
{
union value v;
-
- if (var_is_alpha (vv))
+
+ if (var_is_alpha (vv))
{
char string[256];
read_string (r, string);
- buf_copy_str_rpad (v.s, 8, string);
+ buf_copy_str_rpad (v.s, 8, string);
}
else
v.f = read_float (r);
}
/* Reads one case from portable file R into C. */
-bool
-pfm_read_case (struct pfm_reader *r, struct ccase *c)
+static bool
+por_file_casereader_read (struct casereader *reader, void *r_, struct ccase *c)
{
+ struct pfm_reader *r = r_;
size_t i;
size_t idx;
+ case_create (c, casereader_get_value_cnt (reader));
setjmp (r->bail_out);
if (!r->ok)
- return false;
-
+ {
+ casereader_force_error (reader);
+ case_destroy (c);
+ return false;
+ }
+
/* Check for end of file. */
if (r->cc == 'Z')
- return false;
+ {
+ case_destroy (c);
+ return false;
+ }
idx = 0;
- for (i = 0; i < r->var_cnt; i++)
+ for (i = 0; i < r->var_cnt; i++)
{
int width = r->widths[i];
-
+
if (width == 0)
{
case_data_rw_idx (c, idx)->f = read_float (r);
idx += DIV_RND_UP (width, MAX_SHORT_STRING);
}
}
-
- return true;
-}
-/* Returns true if an I/O error has occurred on READER, false
- otherwise. */
-bool
-pfm_read_error (const struct pfm_reader *reader)
-{
- return !reader->ok;
+ return true;
}
/* Returns true if FILE is an SPSS portable file,
false otherwise. */
bool
-pfm_detect (FILE *file)
+pfm_detect (FILE *file)
{
unsigned char header[464];
char trans[256];
int c = getc (file);
if (c == EOF || raw_cnt++ > 512)
return false;
- else if (c != '\n' && c != '\r')
+ else if (c != '\n' && c != '\r')
header[cooked_cnt++] = c;
}
memset (trans, 0, 256);
- for (i = 64; i < 256; i++)
+ for (i = 64; i < 256; i++)
{
unsigned char c = header[i + 200];
if (trans[c] == 0)
trans[c] = portable_to_local[i];
}
- for (i = 0; i < 8; i++)
- if (trans[header[i + 456]] != "SPSSPORT"[i])
- return false;
+ for (i = 0; i < 8; i++)
+ if (trans[header[i + 456]] != "SPSSPORT"[i])
+ return false;
return true;
}
+
+static struct casereader_class por_file_casereader_class =
+ {
+ por_file_casereader_read,
+ por_file_casereader_destroy,
+ NULL,
+ NULL,
+ };
projects / pspp-builds.git / blobdiff