#include "gl/progname.h"
#include "gl/version-etc.h"
#include "gl/xalloc.h"
+#include "gl/xsize.h"
#define ID_MAX_LEN 64
static void read_zlib_compressed_data (struct sfm_reader *);
static struct text_record *open_text_record (
- struct sfm_reader *, size_t size);
+ struct sfm_reader *, size_t size, size_t count);
static void close_text_record (struct text_record *);
static bool read_variable_to_value_pair (struct text_record *,
char **key, char **value);
else if (r.compression == COMP_ZLIB)
read_zlib_compressed_data (&r);
+ free (r.var_widths);
+
fclose (r.file);
}
char name[9];
printf ("%08llx: variable record #%d\n",
- (long long int) ftello (r->file), r->n_variable_records++);
+ (long long int) ftello (r->file), ++r->n_variable_records);
width = read_int (r);
has_variable_label = read_int (r);
static void
read_value_label_record (struct sfm_reader *r)
{
- int label_cnt, var_cnt;
+ int n_labels, n_vars;
int i;
printf ("%08llx: value labels record\n", (long long int) ftello (r->file));
/* Read number of labels. */
- label_cnt = read_int (r);
- for (i = 0; i < label_cnt; i++)
+ n_labels = read_int (r);
+ for (i = 0; i < n_labels; i++)
{
char raw_value[8];
unsigned char label_len;
/* Read number of variables associated with value label from type 4
record. */
printf ("\t%08llx: apply to variables", (long long int) ftello (r->file));
- var_cnt = read_int (r);
- for (i = 0; i < var_cnt; i++)
+ n_vars = read_int (r);
+ for (i = 0; i < n_vars; i++)
printf (" #%d", read_int (r));
putchar ('\n');
}
const char *s;
printf ("%08llx: extra product info\n", (long long int) ftello (r->file));
- text = open_text_record (r, size * count);
+ text = open_text_record (r, size, count);
s = text_get_all (text);
print_string (s, strlen (s));
close_text_record (text);
printf ("%08llx: multiple response sets\n",
(long long int) ftello (r->file));
- text = open_text_record (r, size * count);
+ text = open_text_record (r, size, count);
for (;;)
{
const char *name;
printf ("%08llx: long variable names (short => long)\n",
(long long int) ftello (r->file));
- text = open_text_record (r, size * count);
+ text = open_text_record (r, size, count);
while (read_variable_to_value_pair (text, &var, &long_name))
printf ("\t%s => %s\n", var, long_name);
close_text_record (text);
printf ("%08llx: very long strings (variable => length)\n",
(long long int) ftello (r->file));
- text = open_text_record (r, size * count);
+ text = open_text_record (r, size, count);
while (read_variable_to_value_pair (text, &var, &length_s))
printf ("\t%s => %d\n", var, atoi (length_s));
close_text_record (text);
struct text_record *text;
printf ("%08llx: datafile attributes\n", (long long int) ftello (r->file));
- text = open_text_record (r, size * count);
+ text = open_text_record (r, size, count);
read_attributes (r, text, "datafile");
close_text_record (text);
}
read_string (r, encoding, count + 1);
printf ("%08llx: Character Encoding: %s\n", posn, encoding);
+
+ free (encoding);
}
static void
struct text_record *text;
printf ("%08llx: variable attributes\n", (long long int) ftello (r->file));
- text = open_text_record (r, size * count);
+ text = open_text_record (r, size, count);
for (;;)
{
const char *variable = text_tokenize (text, ':');
{
printf ("%08llx: case %d's uncompressible data begins\n",
(long long int) ftello (r->file), case_num);
- for (i = 0; i < r->n_var_widths; )
+ for (i = 0; i < r->n_var_widths;)
{
int width = r->var_widths[i];
char raw_value[8];
size_t pos; /* Current position in buffer. */
};
-/* Reads SIZE bytes into a text record for R,
+/* Reads SIZE * COUNT bytes into a text record for R,
and returns the new text record. */
static struct text_record *
-open_text_record (struct sfm_reader *r, size_t size)
+open_text_record (struct sfm_reader *r, size_t size, size_t count)
{
struct text_record *text = xmalloc (sizeof *text);
- char *buffer = xmalloc (size + 1);
- read_bytes (r, buffer, size);
- buffer[size] = '\0';
+
+ if (size_overflow_p (xsum (1, xtimes (size, count))))
+ sys_error (r, "Extension record too large.");
+
+ size_t n_bytes = size * count;
+ char *buffer = xmalloc (n_bytes + 1);
+ read_bytes (r, buffer, n_bytes);
+ buffer[n_bytes] = '\0';
text->reader = r;
text->buffer = buffer;
- text->size = size;
+ text->size = n_bytes;
text->pos = 0;
return text;
}
too. */
static inline bool
read_bytes_internal (struct sfm_reader *r, bool eof_is_ok,
- void *buf, size_t byte_cnt)
+ void *buf, size_t n_bytes)
{
- size_t bytes_read = fread (buf, 1, byte_cnt, r->file);
- if (bytes_read == byte_cnt)
+ size_t bytes_read = fread (buf, 1, n_bytes, r->file);
+ if (bytes_read == n_bytes)
return true;
else if (ferror (r->file))
sys_error (r, "System error: %s.", strerror (errno));
/* Reads BYTE_CNT into BUF.
Aborts upon I/O error or if end-of-file is encountered. */
static void
-read_bytes (struct sfm_reader *r, void *buf, size_t byte_cnt)
+read_bytes (struct sfm_reader *r, void *buf, size_t n_bytes)
{
- read_bytes_internal (r, false, buf, byte_cnt);
+ read_bytes_internal (r, false, buf, n_bytes);
}
/* Reads BYTE_CNT bytes into BUF.
Returns false if an immediate end-of-file is encountered.
Aborts if an I/O error or a partial read occurs. */
static bool
-try_read_bytes (struct sfm_reader *r, void *buf, size_t byte_cnt)
+try_read_bytes (struct sfm_reader *r, void *buf, size_t n_bytes)
{
- return read_bytes_internal (r, true, buf, byte_cnt);
+ return read_bytes_internal (r, true, buf, n_bytes);
}
/* Reads a 32-bit signed integer from R and returns its value in
projects / pspp / blobdiff