- data_list_source_read,
- data_list_source_destroy,
- };
-\f
-/* REPEATING DATA. */
-
-/* Represents a number or a variable. */
-struct rpd_num_or_var
- {
- int num; /* Value, or 0. */
- struct variable *var; /* Variable, if number==0. */
- };
-
-/* REPEATING DATA private data structure. */
-struct repeating_data_trns
- {
- struct dls_var_spec *first, *last; /* Variable parsing specifications. */
- struct dfm_reader *reader; /* Input file, never NULL. */
-
- struct rpd_num_or_var starts_beg; /* STARTS=, before the dash. */
- struct rpd_num_or_var starts_end; /* STARTS=, after the dash. */
- struct rpd_num_or_var occurs; /* OCCURS= subcommand. */
- struct rpd_num_or_var length; /* LENGTH= subcommand. */
- struct rpd_num_or_var cont_beg; /* CONTINUED=, before the dash. */
- struct rpd_num_or_var cont_end; /* CONTINUED=, after the dash. */
-
- /* ID subcommand. */
- int id_beg, id_end; /* Beginning & end columns. */
- struct variable *id_var; /* DATA LIST variable. */
- struct fmt_spec id_spec; /* Input format spec. */
- union value *id_value; /* ID value. */
-
- write_case_func *write_case;
- write_case_data wc_data;
- };
-
-static trns_free_func repeating_data_trns_free;
-static int parse_num_or_var (struct rpd_num_or_var *, const char *);
-static int parse_repeating_data (struct dls_var_spec **,
- struct dls_var_spec **);
-static void find_variable_input_spec (struct variable *v,
- struct fmt_spec *spec);
-
-/* Parses the REPEATING DATA command. */
-int
-cmd_repeating_data (void)
-{
- struct repeating_data_trns *rpd;
- int table = 1; /* Print table? */
- bool saw_starts = false; /* Saw STARTS subcommand? */
- bool saw_occurs = false; /* Saw OCCURS subcommand? */
- bool saw_length = false; /* Saw LENGTH subcommand? */
- bool saw_continued = false; /* Saw CONTINUED subcommand? */
- bool saw_id = false; /* Saw ID subcommand? */
- struct file_handle *const fh = fh_get_default_handle ();
-
- assert (case_source_is_complex (vfm_source));
-
- rpd = xmalloc (sizeof *rpd);
- rpd->reader = dfm_open_reader (fh);
- rpd->first = rpd->last = NULL;
- rpd->starts_beg.num = 0;
- rpd->starts_beg.var = NULL;
- rpd->starts_end = rpd->occurs = rpd->length = rpd->cont_beg
- = rpd->cont_end = rpd->starts_beg;
- rpd->id_beg = rpd->id_end = 0;
- rpd->id_var = NULL;
- rpd->id_value = NULL;
-
- lex_match ('/');
-
- for (;;)
- {
- if (lex_match_id ("FILE"))
- {
- struct file_handle *file;
- lex_match ('=');
- file = fh_parse (FH_REF_FILE | FH_REF_INLINE);
- if (file == NULL)
- goto error;
- if (file != fh)
- {
- msg (SE, _("REPEATING DATA must use the same file as its "
- "corresponding DATA LIST or FILE TYPE."));
- goto error;
- }
- }
- else if (lex_match_id ("STARTS"))
- {
- lex_match ('=');
- if (saw_starts)
- {
- msg (SE, _("%s subcommand given multiple times."),"STARTS");
- goto error;
- }
- saw_starts = true;
-
- if (!parse_num_or_var (&rpd->starts_beg, "STARTS beginning column"))
- goto error;
-
- lex_negative_to_dash ();
- if (lex_match ('-'))
- {
- if (!parse_num_or_var (&rpd->starts_end, "STARTS ending column"))
- goto error;
- } else {
- /* Otherwise, rpd->starts_end is uninitialized. We
- will initialize it later from the record length
- of the file. We can't do so now because the
- file handle may not be specified yet. */
- }
-
- if (rpd->starts_beg.num != 0 && rpd->starts_end.num != 0
- && rpd->starts_beg.num > rpd->starts_end.num)
- {
- msg (SE, _("STARTS beginning column (%d) exceeds "
- "STARTS ending column (%d)."),
- rpd->starts_beg.num, rpd->starts_end.num);
- goto error;
- }
- }
- else if (lex_match_id ("OCCURS"))
- {
- lex_match ('=');
- if (saw_occurs)
- {
- msg (SE, _("%s subcommand given multiple times."),"OCCURS");
- goto error;
- }
- saw_occurs = true;
-
- if (!parse_num_or_var (&rpd->occurs, "OCCURS"))
- goto error;
- }
- else if (lex_match_id ("LENGTH"))
- {
- lex_match ('=');
- if (saw_length)
- {
- msg (SE, _("%s subcommand given multiple times."),"LENGTH");
- goto error;
- }
- saw_length = true;
-
- if (!parse_num_or_var (&rpd->length, "LENGTH"))
- goto error;
- }
- else if (lex_match_id ("CONTINUED"))
- {
- lex_match ('=');
- if (saw_continued)
- {
- msg (SE, _("%s subcommand given multiple times."),"CONTINUED");
- goto error;
- }
- saw_continued = true;
-
- if (!lex_match ('/'))
- {
- if (!parse_num_or_var (&rpd->cont_beg,
- "CONTINUED beginning column"))
- goto error;
-
- lex_negative_to_dash ();
- if (lex_match ('-')
- && !parse_num_or_var (&rpd->cont_end,
- "CONTINUED ending column"))
- goto error;
-
- if (rpd->cont_beg.num != 0 && rpd->cont_end.num != 0
- && rpd->cont_beg.num > rpd->cont_end.num)
- {
- msg (SE, _("CONTINUED beginning column (%d) exceeds "
- "CONTINUED ending column (%d)."),
- rpd->cont_beg.num, rpd->cont_end.num);
- goto error;
- }
- }
- else
- rpd->cont_beg.num = 1;
- }
- else if (lex_match_id ("ID"))
- {
- lex_match ('=');
- if (saw_id)
- {
- msg (SE, _("%s subcommand given multiple times."),"ID");
- goto error;
- }
- saw_id = true;
-
- if (!lex_force_int ())
- goto error;
- if (lex_integer () < 1)
- {
- msg (SE, _("ID beginning column (%ld) must be positive."),
- lex_integer ());
- goto error;
- }
- rpd->id_beg = lex_integer ();
-
- lex_get ();
- lex_negative_to_dash ();
-
- if (lex_match ('-'))
- {
- if (!lex_force_int ())
- goto error;
- if (lex_integer () < 1)
- {
- msg (SE, _("ID ending column (%ld) must be positive."),
- lex_integer ());
- goto error;
- }
- if (lex_integer () < rpd->id_end)
- {
- msg (SE, _("ID ending column (%ld) cannot be less than "
- "ID beginning column (%d)."),
- lex_integer (), rpd->id_beg);
- goto error;
- }
-
- rpd->id_end = lex_integer ();
- lex_get ();
- }
- else rpd->id_end = rpd->id_beg;
-
- if (!lex_force_match ('='))
- goto error;
- rpd->id_var = parse_variable ();
- if (rpd->id_var == NULL)
- goto error;
-
- find_variable_input_spec (rpd->id_var, &rpd->id_spec);
- rpd->id_value = xnmalloc (rpd->id_var->nv, sizeof *rpd->id_value);
- }
- else if (lex_match_id ("TABLE"))
- table = 1;
- else if (lex_match_id ("NOTABLE"))
- table = 0;
- else if (lex_match_id ("DATA"))
- break;
- else
- {
- lex_error (NULL);
- goto error;
- }
-
- if (!lex_force_match ('/'))
- goto error;
- }
-
- /* Comes here when DATA specification encountered. */
- if (!saw_starts || !saw_occurs)
- {
- if (!saw_starts)
- msg (SE, _("Missing required specification STARTS."));
- if (!saw_occurs)
- msg (SE, _("Missing required specification OCCURS."));
- goto error;
- }
-
- /* Enforce ID restriction. */
- if (saw_id && !saw_continued)
- {
- msg (SE, _("ID specified without CONTINUED."));
- goto error;
- }
-
- /* Calculate and check starts_end, cont_end if necessary. */
- if (rpd->starts_end.num == 0 && rpd->starts_end.var == NULL)
- {
- rpd->starts_end.num = fh_get_record_width (fh);
- if (rpd->starts_beg.num != 0
- && rpd->starts_beg.num > rpd->starts_end.num)
- {
- msg (SE, _("STARTS beginning column (%d) exceeds "
- "default STARTS ending column taken from file's "
- "record width (%d)."),
- rpd->starts_beg.num, rpd->starts_end.num);
- goto error;
- }
- }
- if (rpd->cont_end.num == 0 && rpd->cont_end.var == NULL)
- {
- rpd->cont_end.num = fh_get_record_width (fh);
- if (rpd->cont_beg.num != 0
- && rpd->cont_beg.num > rpd->cont_end.num)
- {
- msg (SE, _("CONTINUED beginning column (%d) exceeds "
- "default CONTINUED ending column taken from file's "
- "record width (%d)."),
- rpd->cont_beg.num, rpd->cont_end.num);
- goto error;
- }
- }
-
- lex_match ('=');
- if (!parse_repeating_data (&rpd->first, &rpd->last))
- goto error;
-
- /* Calculate length if necessary. */
- if (!saw_length)
- {
- struct dls_var_spec *iter;
-
- for (iter = rpd->first; iter; iter = iter->next)
- if (iter->lc > rpd->length.num)
- rpd->length.num = iter->lc;
- assert (rpd->length.num != 0);
- }
-
- if (table)
- dump_fixed_table (rpd->first, fh, rpd->last->rec);
-
- add_transformation (repeating_data_trns_proc, repeating_data_trns_free, rpd);
-
- return lex_end_of_command ();
-
- error:
- repeating_data_trns_free (rpd);
- return CMD_CASCADING_FAILURE;
-}
-
-/* Finds the input format specification for variable V and puts
- it in SPEC. Because of the way that DATA LIST is structured,
- this is nontrivial. */
-static void
-find_variable_input_spec (struct variable *v, struct fmt_spec *spec)
-{
- size_t i;
-
- for (i = 0; i < n_trns; i++)
- {
- struct transformation *trns = &t_trns[i];
-
- if (trns->proc == data_list_trns_proc)
- {
- struct data_list_pgm *pgm = trns->private;
- struct dls_var_spec *iter;
-
- for (iter = pgm->first; iter; iter = iter->next)
- if (iter->v == v)
- {
- *spec = iter->input;
- return;
- }
- }
- }
-
- assert (0);
-}
-
-/* Parses a number or a variable name from the syntax file and puts
- the results in VALUE. Ensures that the number is at least 1; else
- emits an error based on MESSAGE. Returns nonzero only if
- successful. */
-static int
-parse_num_or_var (struct rpd_num_or_var *value, const char *message)
-{
- if (token == T_ID)
- {
- value->num = 0;
- value->var = parse_variable ();
- if (value->var == NULL)
- return 0;
- if (value->var->type == ALPHA)
- {
- msg (SE, _("String variable not allowed here."));
- return 0;
- }
- }
- else if (lex_is_integer ())
- {
- value->num = lex_integer ();
-
- if (value->num < 1)
- {
- msg (SE, _("%s (%d) must be at least 1."), message, value->num);
- return 0;
- }
-
- lex_get ();
- } else {
- msg (SE, _("Variable or integer expected for %s."), message);
- return 0;
- }
- return 1;
-}
-
-/* Parses data specifications for repeating data groups, adding
- them to the linked list with head FIRST and tail LAST.
- Returns nonzero only if successful. */
-static int
-parse_repeating_data (struct dls_var_spec **first, struct dls_var_spec **last)
-{
- struct fixed_parsing_state fx;
- size_t i;
-
- fx.recno = 0;
- fx.sc = 1;
-
- while (token != '.')
- {
- if (!parse_DATA_LIST_vars (&fx.name, &fx.name_cnt, PV_NONE))
- return 0;
-
- if (lex_is_number ())
- {
- if (!fixed_parse_compatible (&fx, first, last))
- goto fail;
- }
- else if (token == '(')
- {
- if (!fixed_parse_fortran (&fx, first, last))
- goto fail;
- }
- else
- {
- msg (SE, _("SPSS-like or FORTRAN-like format "
- "specification expected after variable names."));
- goto fail;
- }
-
- for (i = 0; i < fx.name_cnt; i++)
- free (fx.name[i]);
- free (fx.name);
- }
-
- return 1;
-
- fail:
- for (i = 0; i < fx.name_cnt; i++)
- free (fx.name[i]);
- free (fx.name);
- return 0;
-}
-
-/* Obtains the real value for rpd_num_or_var N in case C and returns
- it. The valid range is nonnegative numbers, but numbers outside
- this range can be returned and should be handled by the caller as
- invalid. */
-static int
-realize_value (struct rpd_num_or_var *n, struct ccase *c)
-{
- if (n->var != NULL)
- {
- double v = case_num (c, n->var->fv);
- return v != SYSMIS && v >= INT_MIN && v <= INT_MAX ? v : -1;
- }
- else
- return n->num;
-}
-
-/* Parameter record passed to rpd_parse_record(). */
-struct rpd_parse_info
- {
- struct repeating_data_trns *trns; /* REPEATING DATA transformation. */
- const char *line; /* Line being parsed. */
- size_t len; /* Line length. */
- int beg, end; /* First and last column of first occurrence. */
- int ofs; /* Column offset between repeated occurrences. */
- struct ccase *c; /* Case to fill in. */
- int verify_id; /* Zero to initialize ID, nonzero to verify it. */
- int max_occurs; /* Max number of occurrences to parse. */
projects / pspp-builds.git / blobdiff