--- /dev/null
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 1997-9, 2000, 2009, 2010, 2011 Free Software Foundation, Inc.
+
+ 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+#include <ctype.h>
+#include <math.h>
+#include <stdlib.h>
+
+#include "data/case.h"
+#include "data/data-in.h"
+#include "data/dataset.h"
+#include "data/dictionary.h"
+#include "data/format.h"
+#include "data/transformations.h"
+#include "data/variable.h"
+#include "language/command.h"
+#include "language/lexer/lexer.h"
+#include "language/lexer/value-parser.h"
+#include "language/lexer/variable-parser.h"
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "libpspp/compiler.h"
+#include "libpspp/i18n.h"
+#include "libpspp/message.h"
+#include "libpspp/pool.h"
+#include "libpspp/str.h"
+
+#include "gl/xalloc.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+\f
+/* Definitions. */
+
+/* Type of source value for RECODE. */
+enum map_in_type
+ {
+ MAP_SINGLE, /* Specific value. */
+ MAP_RANGE, /* Range of values. */
+ MAP_SYSMIS, /* System missing value. */
+ MAP_MISSING, /* Any missing value. */
+ MAP_ELSE, /* Any value. */
+ MAP_CONVERT /* "123" => 123. */
+ };
+
+/* Describes input values to be mapped. */
+struct map_in
+ {
+ enum map_in_type type; /* One of MAP_*. */
+ union value x, y; /* Source values. */
+ };
+
+/* Describes the value used as output from a mapping. */
+struct map_out
+ {
+ bool copy_input; /* If true, copy input to output. */
+ union value value; /* If copy_input false, recoded value. */
+ int width; /* If copy_input false, output value width. */
+ int ofs; /* Lexical location. */
+ };
+
+/* Describes how to recode a single value or range of values into a
+ single value. */
+struct mapping
+ {
+ struct map_in in; /* Input values. */
+ struct map_out out; /* Output value. */
+ };
+
+/* RECODE transformation. */
+struct recode_trns
+ {
+ struct pool *pool;
+
+ /* Variable types, for convenience. */
+ enum val_type src_type; /* src_vars[*] type. */
+ enum val_type dst_type; /* dst_vars[*] type. */
+
+ /* Variables. */
+ const struct variable **src_vars; /* Source variables. */
+ const struct variable **dst_vars; /* Destination variables. */
+ const struct dictionary *dst_dict; /* Dictionary of dst_vars */
+ char **dst_names; /* Name of dest variables, if they're new. */
+ size_t n_vars; /* Number of variables. */
+
+ /* Mappings. */
+ struct mapping *mappings; /* Value mappings. */
+ size_t n_maps; /* Number of mappings. */
+ int max_src_width; /* Maximum width of src_vars[*]. */
+ int max_dst_width; /* Maximum width of any map_out in mappings. */
+ };
+
+static bool parse_src_vars (struct lexer *, struct recode_trns *, const struct dictionary *dict);
+static bool parse_mappings (struct lexer *, struct recode_trns *,
+ const char *dict_encoding);
+static bool parse_dst_vars (struct lexer *, struct recode_trns *,
+ const struct dictionary *,
+ int src_start, int src_end,
+ int mappings_start, int mappings_end);
+
+static void add_mapping (struct recode_trns *,
+ size_t *map_allocated, const struct map_in *);
+
+static bool parse_map_in (struct lexer *lexer, struct map_in *, struct pool *,
+ enum val_type src_type, size_t max_src_width,
+ const char *dict_encoding);
+static void set_map_in_str (struct map_in *, struct pool *,
+ struct substring, size_t width,
+ const char *dict_encoding);
+
+static bool parse_map_out (struct lexer *lexer, struct pool *, struct map_out *);
+static void set_map_out_str (struct map_out *, struct pool *,
+ struct substring);
+
+static bool enlarge_dst_widths (struct lexer *, struct recode_trns *,
+ int dst_start, int dst_end);
+static void create_dst_vars (struct recode_trns *, struct dictionary *);
+
+static bool recode_trns_free (void *trns_);
+
+static const struct trns_class recode_trns_class;
+\f
+/* Parser. */
+
+static bool
+parse_one_recoding (struct lexer *lexer, struct dataset *ds,
+ struct recode_trns *trns)
+{
+ struct dictionary *dict = dataset_dict (ds);
+
+ /* Parse source variable names,
+ then input to output mappings,
+ then destination variable names. */
+ int src_start = lex_ofs (lexer);
+ if (!parse_src_vars (lexer, trns, dict))
+ return false;
+ int src_end = lex_ofs (lexer) - 1;
+
+ int mappings_start = lex_ofs (lexer);
+ if (!parse_mappings (lexer, trns, dict_get_encoding (dict)))
+ return false;
+ int mappings_end = lex_ofs (lexer) - 1;
+
+ int dst_start = lex_ofs (lexer);
+ if (!parse_dst_vars (lexer, trns, dict,
+ src_start, src_end, mappings_start, mappings_end))
+ return false;
+ int dst_end = lex_ofs (lexer) - 1;
+ if (dst_end < dst_start)
+ {
+ /* There was no target variable syntax, so the target variables are the
+ same as the source variables. */
+ dst_start = src_start;
+ dst_end = src_end;
+ }
+
+ /* Ensure that all the output strings are at least as wide
+ as the widest destination variable. */
+ if (trns->dst_type == VAL_STRING
+ && !enlarge_dst_widths (lexer, trns, dst_start, dst_end))
+ return false;
+
+ /* Create destination variables, if needed.
+ This must be the final step; otherwise we'd have to
+ delete destination variables on failure. */
+ trns->dst_dict = dict;
+ if (trns->src_vars != trns->dst_vars)
+ create_dst_vars (trns, dict);
+
+ /* Done. */
+ add_transformation (ds, &recode_trns_class, trns);
+ return true;
+}
+
+/* Parses the RECODE transformation. */
+int
+cmd_recode (struct lexer *lexer, struct dataset *ds)
+{
+ do
+ {
+ struct pool *pool = pool_create ();
+ struct recode_trns *trns = pool_alloc (pool, sizeof *trns);
+ *trns = (struct recode_trns) { .pool = pool };
+
+ if (!parse_one_recoding (lexer, ds, trns))
+ {
+ recode_trns_free (trns);
+ return CMD_FAILURE;
+ }
+ }
+ while (lex_match (lexer, T_SLASH));
+
+ return CMD_SUCCESS;
+}
+
+/* Parses a set of variables to recode into TRNS->src_vars and
+ TRNS->n_vars. Sets TRNS->src_type. Returns true if
+ successful, false on parse error. */
+static bool
+parse_src_vars (struct lexer *lexer,
+ struct recode_trns *trns, const struct dictionary *dict)
+{
+ if (!parse_variables_const (lexer, dict, &trns->src_vars, &trns->n_vars,
+ PV_SAME_TYPE))
+ return false;
+ pool_register (trns->pool, free, trns->src_vars);
+ trns->src_type = var_get_type (trns->src_vars[0]);
+ return true;
+}
+
+/* Parses a set of mappings, which take the form (input=output),
+ into TRNS->mappings and TRNS->n_maps. Sets TRNS->dst_type.
+ Returns true if successful, false on parse error. */
+static bool
+parse_mappings (struct lexer *lexer, struct recode_trns *trns,
+ const char *dict_encoding)
+{
+ /* Find length of longest source variable. */
+ trns->max_src_width = var_get_width (trns->src_vars[0]);
+ for (size_t i = 1; i < trns->n_vars; i++)
+ {
+ size_t var_width = var_get_width (trns->src_vars[i]);
+ if (var_width > trns->max_src_width)
+ trns->max_src_width = var_width;
+ }
+
+ /* Parse the mappings in parentheses. */
+ size_t map_allocated = 0;
+ bool have_dst_type = false;
+ if (!lex_force_match (lexer, T_LPAREN))
+ return false;
+ do
+ {
+ enum val_type dst_type;
+
+ if (!lex_match_id (lexer, "CONVERT"))
+ {
+ size_t first_map_idx = trns->n_maps;
+
+ /* Parse source specifications. */
+ do
+ {
+ struct map_in in;
+
+ if (!parse_map_in (lexer, &in, trns->pool,
+ trns->src_type, trns->max_src_width,
+ dict_encoding))
+ return false;
+ add_mapping (trns, &map_allocated, &in);
+ lex_match (lexer, T_COMMA);
+ }
+ while (!lex_match (lexer, T_EQUALS));
+
+ struct map_out out;
+ if (!parse_map_out (lexer, trns->pool, &out))
+ return false;
+
+ dst_type = (out.copy_input
+ ? trns->src_type
+ : val_type_from_width (out.width));
+ for (size_t i = first_map_idx; i < trns->n_maps; i++)
+ trns->mappings[i].out = out;
+ }
+ else
+ {
+ /* Parse CONVERT as a special case. */
+ struct map_in in = { .type = MAP_CONVERT };
+ add_mapping (trns, &map_allocated, &in);
+
+ int ofs = lex_ofs (lexer) - 1;
+ trns->mappings[trns->n_maps - 1].out = (struct map_out) {
+ .ofs = ofs,
+ };
+
+ dst_type = VAL_NUMERIC;
+ if (trns->src_type != VAL_STRING)
+ {
+ lex_ofs_error (lexer, ofs, ofs,
+ _("CONVERT requires string input values."));
+ return false;
+ }
+ }
+ if (have_dst_type && dst_type != trns->dst_type)
+ {
+ msg (SE, _("Output values must be all numeric or all string."));
+
+ assert (trns->n_maps > 1);
+ const struct map_out *numeric = &trns->mappings[trns->n_maps - 2].out;
+ const struct map_out *string = &trns->mappings[trns->n_maps - 1].out;
+
+ if (trns->dst_type == VAL_STRING)
+ {
+ const struct map_out *tmp = numeric;
+ numeric = string;
+ string = tmp;
+ }
+
+ lex_ofs_msg (lexer, SN, numeric->ofs, numeric->ofs,
+ _("This output value is numeric."));
+ lex_ofs_msg (lexer, SN, string->ofs, string->ofs,
+ _("This output value is string."));
+ return false;
+ }
+ trns->dst_type = dst_type;
+ have_dst_type = true;
+
+ if (!lex_force_match (lexer, T_RPAREN))
+ return false;
+ }
+ while (lex_match (lexer, T_LPAREN));
+
+ return true;
+}
+
+/* Parses a mapping input value into IN, allocating memory from
+ POOL. The source value type must be provided as SRC_TYPE and,
+ if string, the maximum width of a string source variable must
+ be provided in MAX_SRC_WIDTH. Returns true if successful,
+ false on parse error. */
+static bool
+parse_map_in (struct lexer *lexer, struct map_in *in, struct pool *pool,
+ enum val_type src_type, size_t max_src_width,
+ const char *dict_encoding)
+{
+
+ if (lex_match_id (lexer, "ELSE"))
+ *in = (struct map_in) { .type = MAP_ELSE };
+ else if (src_type == VAL_NUMERIC)
+ {
+ if (lex_match_id (lexer, "MISSING"))
+ *in = (struct map_in) { .type = MAP_MISSING };
+ else if (lex_match_id (lexer, "SYSMIS"))
+ *in = (struct map_in) { .type = MAP_SYSMIS };
+ else
+ {
+ double x, y;
+ if (!parse_num_range (lexer, &x, &y, NULL))
+ return false;
+ *in = (struct map_in) {
+ .type = x == y ? MAP_SINGLE : MAP_RANGE,
+ .x = { .f = x },
+ .y = { .f = y },
+ };
+ }
+ }
+ else
+ {
+ if (lex_match_id (lexer, "MISSING"))
+ *in = (struct map_in) { .type = MAP_MISSING };
+ else if (!lex_force_string (lexer))
+ return false;
+ else
+ {
+ set_map_in_str (in, pool, lex_tokss (lexer), max_src_width,
+ dict_encoding);
+ lex_get (lexer);
+ if (lex_match_id (lexer, "THRU"))
+ {
+ lex_next_error (lexer, -1, -1,
+ _("%s is not allowed with string variables."),
+ "THRU");
+ return false;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* Adds IN to the list of mappings in TRNS.
+ MAP_ALLOCATED is the current number of allocated mappings,
+ which is updated as needed. */
+static void
+add_mapping (struct recode_trns *trns,
+ size_t *map_allocated, const struct map_in *in)
+{
+ struct mapping *m;
+ if (trns->n_maps >= *map_allocated)
+ trns->mappings = pool_2nrealloc (trns->pool, trns->mappings,
+ map_allocated,
+ sizeof *trns->mappings);
+ m = &trns->mappings[trns->n_maps++];
+ m->in = *in;
+}
+
+/* Sets IN as a string mapping, with STRING as the string,
+ allocated from POOL. The string is padded with spaces on the
+ right to WIDTH characters long. */
+static void
+set_map_in_str (struct map_in *in, struct pool *pool,
+ struct substring string, size_t width,
+ const char *dict_encoding)
+{
+ *in = (struct map_in) { .type = MAP_SINGLE };
+
+ char *s = recode_string (dict_encoding, "UTF-8",
+ ss_data (string), ss_length (string));
+ value_init_pool (pool, &in->x, width);
+ value_copy_buf_rpad (&in->x, width,
+ CHAR_CAST (uint8_t *, s), strlen (s), ' ');
+ free (s);
+}
+
+/* Parses a mapping output value into OUT, allocating memory from
+ POOL. Returns true if successful, false on parse error. */
+static bool
+parse_map_out (struct lexer *lexer, struct pool *pool, struct map_out *out)
+{
+ if (lex_is_number (lexer))
+ {
+ *out = (struct map_out) { .value = { .f = lex_number (lexer) } };
+ lex_get (lexer);
+ }
+ else if (lex_match_id (lexer, "SYSMIS"))
+ *out = (struct map_out) { .value = { .f = SYSMIS } };
+ else if (lex_is_string (lexer))
+ {
+ set_map_out_str (out, pool, lex_tokss (lexer));
+ lex_get (lexer);
+ }
+ else if (lex_match_id (lexer, "COPY"))
+ *out = (struct map_out) { .copy_input = true };
+ else
+ {
+ lex_error (lexer, _("Syntax error expecting output value."));
+ return false;
+ }
+ out->ofs = lex_ofs (lexer) - 1;
+ return true;
+}
+
+/* Sets OUT as a string mapping output with the given VALUE. */
+static void
+set_map_out_str (struct map_out *out, struct pool *pool,
+ const struct substring value)
+{
+ const char *string = ss_data (value);
+ size_t length = ss_length (value);
+
+ if (length == 0)
+ {
+ /* A length of 0 will yield a numeric value, which is not
+ what we want. */
+ string = " ";
+ length = 1;
+ }
+
+ *out = (struct map_out) { .width = length };
+ value_init_pool (pool, &out->value, length);
+ memcpy (out->value.s, string, length);
+}
+
+/* Parses a set of target variables into TRNS->dst_vars and
+ TRNS->dst_names. */
+static bool
+parse_dst_vars (struct lexer *lexer, struct recode_trns *trns,
+ const struct dictionary *dict, int src_start, int src_end,
+ int mappings_start, int mappings_end)
+{
+ int dst_start, dst_end;
+ if (lex_match_id (lexer, "INTO"))
+ {
+ dst_start = lex_ofs (lexer);
+ size_t n_names;
+ if (!parse_mixed_vars_pool (lexer, dict, trns->pool,
+ &trns->dst_names, &n_names,
+ PV_NONE))
+ return false;
+ dst_end = lex_ofs (lexer) - 1;
+
+ if (n_names != trns->n_vars)
+ {
+ msg (SE, _("Source and target variable counts must match."));
+ lex_ofs_msg (lexer, SN, src_start, src_end,
+ ngettext ("There is %zu source variable.",
+ "There are %zu source variables.",
+ trns->n_vars),
+ trns->n_vars);
+ lex_ofs_msg (lexer, SN, dst_start, dst_end,
+ ngettext ("There is %zu target variable.",
+ "There are %zu target variables.",
+ n_names),
+ n_names);
+ return false;
+ }
+
+ trns->dst_vars = pool_nalloc (trns->pool,
+ trns->n_vars, sizeof *trns->dst_vars);
+ for (size_t i = 0; i < trns->n_vars; i++)
+ {
+ const struct variable *v;
+ v = trns->dst_vars[i] = dict_lookup_var (dict, trns->dst_names[i]);
+ if (v == NULL && trns->dst_type == VAL_STRING)
+ {
+ msg (SE, _("All string variables specified on INTO must already "
+ "exist. (Use the STRING command to create a string "
+ "variable.)"));
+ lex_ofs_msg (lexer, SN, dst_start, dst_end,
+ _("There is no variable named %s."),
+ trns->dst_names[i]);
+ return false;
+ }
+ }
+ }
+ else
+ {
+ dst_start = src_start;
+ dst_end = src_end;
+
+ trns->dst_vars = trns->src_vars;
+ if (trns->src_type != trns->dst_type)
+ {
+ if (trns->src_type == VAL_NUMERIC)
+ lex_ofs_error (lexer, mappings_start, mappings_end,
+ _("INTO is required with numeric input values "
+ "and string output values."));
+ else
+ lex_ofs_error (lexer, mappings_start, mappings_end,
+ _("INTO is required with string input values "
+ "and numeric output values."));
+ return false;
+ }
+ }
+
+ for (size_t i = 0; i < trns->n_vars; i++)
+ {
+ const struct variable *v = trns->dst_vars[i];
+ if (v && var_get_type (v) != trns->dst_type)
+ {
+ if (trns->dst_type == VAL_STRING)
+ lex_ofs_error (lexer, dst_start, dst_end,
+ _("Type mismatch: cannot store string data in "
+ "numeric variable %s."), var_get_name (v));
+ else
+ lex_ofs_error (lexer, dst_start, dst_end,
+ _("Type mismatch: cannot store numeric data in "
+ "string variable %s."), var_get_name (v));
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* Ensures that all the output values in TRNS are as wide as the
+ widest destination variable. */
+static bool
+enlarge_dst_widths (struct lexer *lexer, struct recode_trns *trns,
+ int dst_start, int dst_end)
+{
+ const struct variable *narrow_var = NULL;
+ int min_dst_width = INT_MAX;
+ trns->max_dst_width = 0;
+
+ for (size_t i = 0; i < trns->n_vars; i++)
+ {
+ const struct variable *v = trns->dst_vars[i];
+ if (var_get_width (v) > trns->max_dst_width)
+ trns->max_dst_width = var_get_width (v);
+
+ if (var_get_width (v) < min_dst_width)
+ {
+ min_dst_width = var_get_width (v);
+ narrow_var = v;
+ }
+ }
+
+ for (size_t i = 0; i < trns->n_maps; i++)
+ {
+ struct map_out *out = &trns->mappings[i].out;
+ if (!out->copy_input)
+ {
+ if (out->width > min_dst_width)
+ {
+ msg (SE, _("At least one target variable is too narrow for "
+ "the output values."));
+ lex_ofs_msg (lexer, SN, out->ofs, out->ofs,
+ _("This recoding output value has width %d."),
+ out->width);
+ lex_ofs_msg (lexer, SN, dst_start, dst_end,
+ _("Target variable %s only has width %d."),
+ var_get_name (narrow_var),
+ var_get_width (narrow_var));
+ return false;
+ }
+
+ value_resize_pool (trns->pool, &out->value,
+ out->width, trns->max_dst_width);
+ }
+ }
+
+ return true;
+}
+
+/* Creates destination variables that don't already exist. */
+static void
+create_dst_vars (struct recode_trns *trns, struct dictionary *dict)
+{
+ for (size_t i = 0; i < trns->n_vars; i++)
+ {
+ const struct variable **var = &trns->dst_vars[i];
+ const char *name = trns->dst_names[i];
+
+ *var = dict_lookup_var (dict, name);
+ if (*var == NULL)
+ *var = dict_create_var_assert (dict, name, 0);
+ assert (var_get_type (*var) == trns->dst_type);
+ }
+}
+\f
+/* Data transformation. */
+
+/* Returns the output mapping in TRNS for an input of VALUE on
+ variable V, or a null pointer if there is no mapping. */
+static const struct map_out *
+find_src_numeric (struct recode_trns *trns, double value, const struct variable *v)
+{
+ for (struct mapping *m = trns->mappings; m < trns->mappings + trns->n_maps;
+ m++)
+ {
+ const struct map_in *in = &m->in;
+ const struct map_out *out = &m->out;
+ bool match;
+
+ switch (in->type)
+ {
+ case MAP_SINGLE:
+ match = value == in->x.f;
+ break;
+ case MAP_MISSING:
+ match = var_is_num_missing (v, value) != 0;
+ break;
+ case MAP_RANGE:
+ match = value >= in->x.f && value <= in->y.f;
+ break;
+ case MAP_SYSMIS:
+ match = value == SYSMIS;
+ break;
+ case MAP_ELSE:
+ match = true;
+ break;
+ default:
+ NOT_REACHED ();
+ }
+
+ if (match)
+ return out;
+ }
+
+ return NULL;
+}
+
+/* Returns the output mapping in TRNS for an input of VALUE with
+ the given WIDTH, or a null pointer if there is no mapping. */
+static const struct map_out *
+find_src_string (struct recode_trns *trns, const uint8_t *value,
+ const struct variable *src_var)
+{
+ const char *encoding = dict_get_encoding (trns->dst_dict);
+ int width = var_get_width (src_var);
+ for (struct mapping *m = trns->mappings; m < trns->mappings + trns->n_maps;
+ m++)
+ {
+ const struct map_in *in = &m->in;
+ struct map_out *out = &m->out;
+ bool match;
+
+ switch (in->type)
+ {
+ case MAP_SINGLE:
+ match = !memcmp (value, in->x.s, width);
+ break;
+ case MAP_ELSE:
+ match = true;
+ break;
+ case MAP_CONVERT:
+ {
+ union value uv;
+ char *error;
+
+ error = data_in (ss_buffer (CHAR_CAST_BUG (char *, value), width),
+ C_ENCODING, FMT_F, settings_get_fmt_settings (),
+ &uv, 0, encoding);
+ match = error == NULL;
+ free (error);
+
+ out->value.f = uv.f;
+ break;
+ }
+ case MAP_MISSING:
+ match = var_is_str_missing (src_var, value) != 0;
+ break;
+ default:
+ NOT_REACHED ();
+ }
+
+ if (match)
+ return out;
+ }
+
+ return NULL;
+}
+
+/* Performs RECODE transformation. */
+static enum trns_result
+recode_trns_proc (void *trns_, struct ccase **c, casenumber case_idx UNUSED)
+{
+ struct recode_trns *trns = trns_;
+
+ *c = case_unshare (*c);
+ for (size_t i = 0; i < trns->n_vars; i++)
+ {
+ const struct variable *src_var = trns->src_vars[i];
+ const struct variable *dst_var = trns->dst_vars[i];
+ const struct map_out *out;
+
+ if (trns->src_type == VAL_NUMERIC)
+ out = find_src_numeric (trns, case_num (*c, src_var), src_var);
+ else
+ out = find_src_string (trns, case_str (*c, src_var), src_var);
+
+ if (trns->dst_type == VAL_NUMERIC)
+ {
+ double *dst = case_num_rw (*c, dst_var);
+ if (out != NULL)
+ *dst = !out->copy_input ? out->value.f : case_num (*c, src_var);
+ else if (trns->src_vars != trns->dst_vars)
+ *dst = SYSMIS;
+ }
+ else
+ {
+ char *dst = CHAR_CAST_BUG (char *, case_str_rw (*c, dst_var));
+ if (out != NULL)
+ {
+ if (!out->copy_input)
+ memcpy (dst, out->value.s, var_get_width (dst_var));
+ else if (trns->src_vars != trns->dst_vars)
+ {
+ union value *dst_data = case_data_rw (*c, dst_var);
+ const union value *src_data = case_data (*c, src_var);
+ value_copy_rpad (dst_data, var_get_width (dst_var),
+ src_data, var_get_width (src_var), ' ');
+ }
+ }
+ else if (trns->src_vars != trns->dst_vars)
+ memset (dst, ' ', var_get_width (dst_var));
+ }
+ }
+
+ return TRNS_CONTINUE;
+}
+
+/* Frees a RECODE transformation. */
+static bool
+recode_trns_free (void *trns_)
+{
+ struct recode_trns *trns = trns_;
+ pool_destroy (trns->pool);
+ return true;
+}
+
+static const struct trns_class recode_trns_class = {
+ .name = "RECODE",
+ .execute = recode_trns_proc,
+ .destroy = recode_trns_free,
+};
projects / pspp / blobdiff