/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1997-2000, 2006-2014 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
#include <config.h>
-#include "sys-file-writer.h"
-#include "sys-file-private.h"
+#include "data/sys-file-writer.h"
+#include "data/sys-file-private.h"
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <time.h>
-
-#include <libpspp/float-format.h>
-#include <libpspp/integer-format.h>
-#include <libpspp/message.h>
-#include <libpspp/misc.h>
-#include <libpspp/str.h>
-#include <libpspp/version.h>
-
-#include <data/case.h>
-#include <data/casewriter-provider.h>
-#include <data/casewriter.h>
-#include <data/dictionary.h>
-#include <data/file-handle-def.h>
-#include <data/file-name.h>
-#include <data/format.h>
-#include <data/missing-values.h>
-#include <data/settings.h>
-#include <data/short-names.h>
-#include <data/value-labels.h>
-#include <data/variable.h>
-
-#include "minmax.h"
-#include "unlocked-io.h"
-#include "xalloc.h"
+#include <zlib.h>
+
+#include "data/attributes.h"
+#include "data/case.h"
+#include "data/casewriter-provider.h"
+#include "data/casewriter.h"
+#include "data/dictionary.h"
+#include "data/file-handle-def.h"
+#include "data/format.h"
+#include "data/make-file.h"
+#include "data/missing-values.h"
+#include "data/mrset.h"
+#include "data/settings.h"
+#include "data/short-names.h"
+#include "data/value-labels.h"
+#include "data/variable.h"
+#include "libpspp/float-format.h"
+#include "libpspp/i18n.h"
+#include "libpspp/integer-format.h"
+#include "libpspp/message.h"
+#include "libpspp/misc.h"
+#include "libpspp/str.h"
+#include "libpspp/string-array.h"
+#include "libpspp/version.h"
+
+#include "gl/xmemdup0.h"
+#include "gl/minmax.h"
+#include "gl/unlocked-io.h"
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
+#define N_(msgid) (msgid)
/* Compression bias used by PSPP. Values between (1 -
COMPRESSION_BIAS) and (251 - COMPRESSION_BIAS) inclusive can be
struct sfm_writer
{
struct file_handle *fh; /* File handle. */
+ struct fh_lock *lock; /* Mutual exclusion for file. */
FILE *file; /* File stream. */
+ struct replace_file *rf; /* Ticket for replacing output file. */
- bool compress; /* 1=compressed, 0=not compressed. */
+ enum any_compression compression;
casenumber case_cnt; /* Number of cases written so far. */
+ uint8_t space; /* ' ' in the file's character encoding. */
+
+ /* Simple compression buffering.
+
+ Compressed data is output as a series of 8-byte elements, with 1 to 9
+ such elements clustered together. The first element in a cluster is 8
+ 1-byte opcodes. Some opcodes call for an additional element in the
+ cluster (hence, if there are eight such opcodes, then the cluster
+ contains a full 9 elements).
- /* Compression buffering.
+ cbuf[] holds a cluster at a time. */
+ uint8_t cbuf[9][8];
+ int n_opcodes; /* Number of opcodes in cbuf[0] so far. */
+ int n_elements; /* Number of elements in cbuf[] so far. */
- Compressed data is output as groups of 8 1-byte opcodes
- followed by up to 8 (depending on the opcodes) 8-byte data
- items. Data items and opcodes arrive at the same time but
- must be reordered for writing to disk, thus a small amount
- of buffering here. */
- uint8_t opcodes[8]; /* Buffered opcodes. */
- int opcode_cnt; /* Number of buffered opcodes. */
- uint8_t data[8][8]; /* Buffered data. */
- int data_cnt; /* Number of buffered data items. */
+ /* ZLIB compression. */
+ z_stream zstream; /* ZLIB deflater. */
+ off_t zstart;
+ struct zblock *blocks;
+ size_t n_blocks, allocated_blocks;
/* Variables. */
struct sfm_var *sfm_vars; /* Variables. */
for long string variables. */
};
-static struct casewriter_class sys_file_casewriter_class;
+struct zblock
+ {
+ unsigned int uncompressed_size;
+ unsigned int compressed_size;
+ };
+
+static const struct casewriter_class sys_file_casewriter_class;
static void write_header (struct sfm_writer *, const struct dictionary *);
static void write_variable (struct sfm_writer *, const struct variable *);
static void write_value_labels (struct sfm_writer *,
- struct variable *, int idx);
-static void write_integer_info_record (struct sfm_writer *);
+ const struct dictionary *);
+static void write_integer_info_record (struct sfm_writer *,
+ const struct dictionary *);
static void write_float_info_record (struct sfm_writer *);
static void write_longvar_table (struct sfm_writer *w,
const struct dictionary *dict);
+static void write_encoding_record (struct sfm_writer *w,
+ const struct dictionary *);
+
static void write_vls_length_table (struct sfm_writer *w,
const struct dictionary *dict);
+static void write_long_string_value_labels (struct sfm_writer *,
+ const struct dictionary *);
+static void write_long_string_missing_values (struct sfm_writer *,
+ const struct dictionary *);
+
+static void write_mrsets (struct sfm_writer *, const struct dictionary *,
+ bool pre_v14);
static void write_variable_display_parameters (struct sfm_writer *w,
const struct dictionary *dict);
static void write_documents (struct sfm_writer *, const struct dictionary *);
+static void write_data_file_attributes (struct sfm_writer *,
+ const struct dictionary *);
+static void write_variable_attributes (struct sfm_writer *,
+ const struct dictionary *);
+
static void write_int (struct sfm_writer *, int32_t);
+static void write_int64 (struct sfm_writer *, int64_t);
static inline void convert_double_to_output_format (double, uint8_t[8]);
static void write_float (struct sfm_writer *, double);
static void write_string (struct sfm_writer *, const char *, size_t);
+static void write_utf8_string (struct sfm_writer *, const char *encoding,
+ const char *string, size_t width);
+static void write_utf8_record (struct sfm_writer *, const char *encoding,
+ const struct string *content, int subtype);
+static void write_string_record (struct sfm_writer *,
+ const struct substring content, int subtype);
static void write_bytes (struct sfm_writer *, const void *, size_t);
static void write_zeros (struct sfm_writer *, size_t);
static void write_spaces (struct sfm_writer *, size_t);
static void write_value (struct sfm_writer *, const union value *, int width);
-static void write_case_uncompressed (struct sfm_writer *, struct ccase *);
-static void write_case_compressed (struct sfm_writer *, struct ccase *);
+static void write_case_uncompressed (struct sfm_writer *,
+ const struct ccase *);
+static void write_case_compressed (struct sfm_writer *, const struct ccase *);
static void flush_compressed (struct sfm_writer *);
static void put_cmp_opcode (struct sfm_writer *, uint8_t);
static void put_cmp_number (struct sfm_writer *, double);
static void put_cmp_string (struct sfm_writer *, const void *, size_t);
-bool write_error (const struct sfm_writer *);
-bool close_writer (struct sfm_writer *);
+static bool start_zstream (struct sfm_writer *);
+static void finish_zstream (struct sfm_writer *);
+static void write_ztrailer (struct sfm_writer *);
+
+static bool write_error (const struct sfm_writer *);
+static bool close_writer (struct sfm_writer *);
/* Returns default options for writing a system file. */
struct sfm_write_options
sfm_writer_default_options (void)
{
struct sfm_write_options opts;
+ opts.compression = (settings_get_scompression ()
+ ? ANY_COMP_SIMPLE
+ : ANY_COMP_NONE);
opts.create_writeable = true;
- opts.compress = get_scompression ();
opts.version = 3;
return opts;
}
/* Opens the system file designated by file handle FH for writing
- cases from dictionary D according to the given OPTS. If
- COMPRESS is nonzero, the system file will be compressed.
+ cases from dictionary D according to the given OPTS.
No reference to D is retained, so it may be modified or
destroyed at will after this function returns. D is not
sfm_open_writer (struct file_handle *fh, struct dictionary *d,
struct sfm_write_options opts)
{
- struct sfm_writer *w = NULL;
+ struct encoding_info encoding_info;
+ struct sfm_writer *w;
mode_t mode;
- FILE *file;
- int idx;
int i;
/* Check version. */
opts.version = 3;
}
- /* Open file handle as an exclusive writer. */
- if (!fh_open (fh, FH_REF_FILE, "system file", "we"))
- return NULL;
-
- /* Create the file on disk. */
- mode = S_IRUSR | S_IRGRP | S_IROTH;
- if (opts.create_writeable)
- mode |= S_IWUSR | S_IWGRP | S_IWOTH;
- file = create_stream (fh_get_file_name (fh), "w", mode);
- if (file == NULL)
- {
- msg (ME, _("Error opening \"%s\" for writing as a system file: %s."),
- fh_get_file_name (fh), strerror (errno));
- fh_close (fh, "system file", "we");
- return NULL;
- }
-
/* Create and initialize writer. */
- w = xmalloc (sizeof *w);
- w->fh = fh;
- w->file = file;
+ w = xzalloc (sizeof *w);
+ w->fh = fh_ref (fh);
+ w->lock = NULL;
+ w->file = NULL;
+ w->rf = NULL;
+
+ /* Use the requested compression, except that no EBCDIC-based ZLIB compressed
+ files have been observed, so drop back to simple compression for those
+ files. */
+ w->compression = opts.compression;
+ if (w->compression == ANY_COMP_ZLIB
+ && is_encoding_ebcdic_compatible (dict_get_encoding (d)))
+ w->compression = ANY_COMP_SIMPLE;
- w->compress = opts.compress;
w->case_cnt = 0;
- w->opcode_cnt = w->data_cnt = 0;
+ w->n_opcodes = w->n_elements = 0;
+ memset (w->cbuf[0], 0, 8);
/* Figure out how to map in-memory case data to on-disk case
data. Also count the number of segments. Very long strings
w->segment_cnt = sfm_dictionary_to_sfm_vars (d, &w->sfm_vars,
&w->sfm_var_cnt);
+ /* Open file handle as an exclusive writer. */
+ /* TRANSLATORS: this fragment will be interpolated into
+ messages in fh_lock() that identify types of files. */
+ w->lock = fh_lock (fh, FH_REF_FILE, N_("system file"), FH_ACC_WRITE, true);
+ if (w->lock == NULL)
+ goto error;
+
+ /* Create the file on disk. */
+ mode = 0444;
+ if (opts.create_writeable)
+ mode |= 0222;
+ w->rf = replace_file_start (fh, "wb", mode, &w->file);
+ if (w->rf == NULL)
+ {
+ msg (ME, _("Error opening `%s' for writing as a system file: %s."),
+ fh_get_file_name (fh), strerror (errno));
+ goto error;
+ }
+
+ get_encoding_info (&encoding_info, dict_get_encoding (d));
+ w->space = encoding_info.space[0];
+
/* Write the file header. */
write_header (w, d);
for (i = 0; i < dict_get_var_cnt (d); i++)
write_variable (w, dict_get_var (d, i));
- /* Write out value labels. */
- idx = 0;
- for (i = 0; i < dict_get_var_cnt (d); i++)
- {
- struct variable *v = dict_get_var (d, i);
-
- write_value_labels (w, v, idx);
- idx += sfm_width_to_octs (var_get_width (v));
- }
+ write_value_labels (w, d);
- if (dict_get_documents (d) != NULL)
+ if (dict_get_document_line_cnt (d) > 0)
write_documents (w, d);
- write_integer_info_record (w);
+ write_integer_info_record (w, d);
write_float_info_record (w);
+ write_mrsets (w, d, true);
+
write_variable_display_parameters (w, d);
if (opts.version >= 3)
write_vls_length_table (w, d);
+ write_long_string_value_labels (w, d);
+ write_long_string_missing_values (w, d);
+
+ if (opts.version >= 3)
+ {
+ if (attrset_count (dict_get_attributes (d)))
+ write_data_file_attributes (w, d);
+ write_variable_attributes (w, d);
+ }
+
+ write_mrsets (w, d, false);
+
+ write_encoding_record (w, d);
+
/* Write end-of-headers record. */
write_int (w, 999);
write_int (w, 0);
- if (write_error (w))
+ if (w->compression == ANY_COMP_ZLIB)
{
- close_writer (w);
- return NULL;
+ w->zstream.zalloc = Z_NULL;
+ w->zstream.zfree = Z_NULL;
+ w->zstream.opaque = Z_NULL;
+ w->zstart = ftello (w->file);
+
+ write_int64 (w, w->zstart);
+ write_int64 (w, 0);
+ write_int64 (w, 0);
+
+ start_zstream (w);
}
- return casewriter_create (dict_get_next_value_idx (d),
- &sys_file_casewriter_class, w);
+ if (write_error (w))
+ goto error;
+
+ return casewriter_create (dict_get_proto (d), &sys_file_casewriter_class, w);
+
+error:
+ close_writer (w);
+ return NULL;
}
/* Returns value of X truncated to two least-significant digits. */
static void
write_header (struct sfm_writer *w, const struct dictionary *d)
{
+ const char *dict_encoding = dict_get_encoding (d);
char prod_name[61];
- char creation_date[10];
- char creation_time[9];
const char *file_label;
struct variable *weight;
time_t t;
/* Record-type code. */
- write_string (w, "$FL2", 4);
+ if (is_encoding_ebcdic_compatible (dict_encoding))
+ write_string (w, EBCDIC_MAGIC, 4);
+ else if (w->compression == ANY_COMP_ZLIB)
+ write_string (w, ASCII_ZMAGIC, 4);
+ else
+ write_string (w, ASCII_MAGIC, 4);
/* Product identification. */
snprintf (prod_name, sizeof prod_name, "@(#) SPSS DATA FILE %s - %s",
version, host_system);
- write_string (w, prod_name, 60);
+ write_utf8_string (w, dict_encoding, prod_name, 60);
/* Layout code. */
write_int (w, 2);
write_int (w, calc_oct_idx (d, NULL));
/* Compressed? */
- write_int (w, w->compress);
+ write_int (w, (w->compression == ANY_COMP_NONE ? 0
+ : w->compression == ANY_COMP_SIMPLE ? 1
+ : 2));
/* Weight variable. */
weight = dict_get_weight (d);
write_float (w, COMPRESSION_BIAS);
/* Creation date and time. */
+ char *creation_date, *creation_time;
if (time (&t) == (time_t) -1)
{
- strcpy (creation_date, "01 Jan 70");
- strcpy (creation_time, "00:00:00");
+ creation_date = xstrdup ("01 Jan 70");
+ creation_time = xstrdup ( "00:00:00");
}
else
{
- static const char *month_name[12] =
+ static const char *const month_name[12] =
{
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
int min = rerange (tmp->tm_min + 1);
int sec = rerange (tmp->tm_sec + 1);
- snprintf (creation_date, sizeof creation_date,
- "%02d %s %02d", day, month_name[mon - 1], year);
- snprintf (creation_time, sizeof creation_time,
- "%02d:%02d:%02d", hour - 1, min - 1, sec - 1);
+ creation_date = xasprintf ("%02d %s %02d",
+ day, month_name[mon - 1], year);
+ creation_time = xasprintf ("%02d:%02d:%02d", hour - 1, min - 1, sec - 1);
}
- write_string (w, creation_date, 9);
- write_string (w, creation_time, 8);
+ write_utf8_string (w, dict_encoding, creation_date, 9);
+ write_utf8_string (w, dict_encoding, creation_time, 8);
+ free (creation_time);
+ free (creation_date);
/* File label. */
file_label = dict_get_label (d);
if (file_label == NULL)
file_label = "";
- write_string (w, file_label, 64);
+ write_utf8_string (w, dict_encoding, file_label, 64);
/* Padding. */
write_zeros (w, 3);
int width = var_get_width (v);
int segment_cnt = sfm_width_to_segments (width);
int seg0_width = sfm_segment_alloc_width (width, 0);
- const struct missing_values *mv = var_get_missing_values (v);
+ const char *encoding = var_get_encoding (v);
int i;
/* Record type. */
/* Number of missing values. If there is a range, then the
range counts as 2 missing values and causes the number to be
- negated. */
- write_int (w, mv_has_range (mv) ? 2 - mv_n_values (mv) : mv_n_values (mv));
+ negated.
+
+ Missing values for long string variables are written in a separate
+ record. */
+ if (width <= MAX_SHORT_STRING)
+ {
+ const struct missing_values *mv = var_get_missing_values (v);
+ if (mv_has_range (mv))
+ write_int (w, -2 - mv_n_values (mv));
+ else
+ write_int (w, mv_n_values (mv));
+ }
+ else
+ write_int (w, 0);
/* Print and write formats. */
write_format (w, *var_get_print_format (v), seg0_width);
/* Short name.
The full name is in a translation table written
separately. */
- write_string (w, var_get_short_name (v, 0), 8);
+ write_utf8_string (w, encoding, var_get_short_name (v, 0), 8);
/* Value label. */
if (var_has_label (v))
{
- const char *label = var_get_label (v);
- size_t padded_len = ROUND_UP (MIN (strlen (label), 255), 4);
- write_int (w, padded_len);
+ char *label = recode_string (encoding, UTF8, var_get_label (v), -1);
+ size_t label_len = MIN (strlen (label), 255);
+ size_t padded_len = ROUND_UP (label_len, 4);
+ write_int (w, label_len);
write_string (w, label, padded_len);
+ free (label);
}
/* Write the missing values, if any, range first. */
- if (mv_has_range (mv))
- {
- double x, y;
- mv_peek_range (mv, &x, &y);
- write_float (w, x);
- write_float (w, y);
- }
- for (i = 0; i < mv_n_values (mv); i++)
+ if (width <= MAX_SHORT_STRING)
{
- union value value;
- mv_peek_value (mv, &value, i);
- write_value (w, &value, seg0_width);
+ const struct missing_values *mv = var_get_missing_values (v);
+ if (mv_has_range (mv))
+ {
+ double x, y;
+ mv_get_range (mv, &x, &y);
+ write_float (w, x);
+ write_float (w, y);
+ }
+ for (i = 0; i < mv_n_values (mv); i++)
+ write_value (w, mv_get_value (mv, i), width);
}
write_variable_continuation_records (w, seg0_width);
write_int (w, 0); /* No missing values. */
write_format (w, fmt, seg_width); /* Print format. */
write_format (w, fmt, seg_width); /* Write format. */
- write_string (w, var_get_short_name (v, i), 8);
+ write_utf8_string (w, encoding, var_get_short_name (v, i), 8);
write_variable_continuation_records (w, seg_width);
}
}
-/* Writes the value labels for variable V having system file
- variable index IDX to system file W. */
+/* Writes the value labels to system file W.
+
+ Value labels for long string variables are written separately,
+ by write_long_string_value_labels. */
static void
-write_value_labels (struct sfm_writer *w, struct variable *v, int idx)
+write_value_labels (struct sfm_writer *w, const struct dictionary *d)
{
- const struct val_labs *val_labs;
- struct val_labs_iterator *i;
- struct val_lab *vl;
+ struct label_set
+ {
+ struct hmap_node hmap_node;
+ const struct val_labs *val_labs;
+ int *indexes;
+ size_t n_indexes, allocated_indexes;
+ };
+
+ size_t n_sets, allocated_sets;
+ struct label_set **sets;
+ struct hmap same_sets;
+ size_t i;
+ int idx;
- val_labs = var_get_value_labels (v);
- if (val_labs == NULL)
- return;
+ n_sets = allocated_sets = 0;
+ sets = NULL;
+ hmap_init (&same_sets);
- /* Value label record. */
- write_int (w, 3); /* Record type. */
- write_int (w, val_labs_count (val_labs));
- for (vl = val_labs_first_sorted (val_labs, &i); vl != NULL;
- vl = val_labs_next (val_labs, &i))
+ idx = 0;
+ for (i = 0; i < dict_get_var_cnt (d); i++)
{
- uint8_t len = MIN (strlen (vl->label), 255);
+ struct variable *v = dict_get_var (d, i);
+
+ if (var_has_value_labels (v) && var_get_width (v) <= 8)
+ {
+ const struct val_labs *val_labs = var_get_value_labels (v);
+ unsigned int hash = val_labs_hash (val_labs, 0);
+ struct label_set *set;
- write_value (w, &vl->value, var_get_width (v));
- write_bytes (w, &len, 1);
- write_bytes (w, vl->label, len);
- write_zeros (w, REM_RND_UP (len + 1, 8));
+ HMAP_FOR_EACH_WITH_HASH (set, struct label_set, hmap_node,
+ hash, &same_sets)
+ {
+ if (val_labs_equal (set->val_labs, val_labs))
+ {
+ if (set->n_indexes >= set->allocated_indexes)
+ set->indexes = x2nrealloc (set->indexes,
+ &set->allocated_indexes,
+ sizeof *set->indexes);
+ set->indexes[set->n_indexes++] = idx;
+ goto next_var;
+ }
+ }
+
+ set = xmalloc (sizeof *set);
+ set->val_labs = val_labs;
+ set->indexes = xmalloc (sizeof *set->indexes);
+ set->indexes[0] = idx;
+ set->n_indexes = 1;
+ set->allocated_indexes = 1;
+ hmap_insert (&same_sets, &set->hmap_node, hash);
+
+ if (n_sets >= allocated_sets)
+ sets = x2nrealloc (sets, &allocated_sets, sizeof *sets);
+ sets[n_sets++] = set;
+ }
+
+ next_var:
+ idx += sfm_width_to_octs (var_get_width (v));
}
- /* Value label variable record. */
- write_int (w, 4); /* Record type. */
- write_int (w, 1); /* Number of variables. */
- write_int (w, idx + 1); /* Variable's dictionary index. */
+ for (i = 0; i < n_sets; i++)
+ {
+ const struct label_set *set = sets[i];
+ const struct val_labs *val_labs = set->val_labs;
+ size_t n_labels = val_labs_count (val_labs);
+ int width = val_labs_get_width (val_labs);
+ const struct val_lab **labels;
+ size_t j;
+
+ /* Value label record. */
+ write_int (w, 3); /* Record type. */
+ write_int (w, n_labels);
+ labels = val_labs_sorted (val_labs);
+ for (j = 0; j < n_labels; j++)
+ {
+ const struct val_lab *vl = labels[j];
+ char *label = recode_string (dict_get_encoding (d), UTF8,
+ val_lab_get_escaped_label (vl), -1);
+ uint8_t len = MIN (strlen (label), 255);
+
+ write_value (w, val_lab_get_value (vl), width);
+ write_bytes (w, &len, 1);
+ write_bytes (w, label, len);
+ write_zeros (w, REM_RND_UP (len + 1, 8));
+ free (label);
+ }
+ free (labels);
+
+ /* Value label variable record. */
+ write_int (w, 4); /* Record type. */
+ write_int (w, set->n_indexes);
+ for (j = 0; j < set->n_indexes; j++)
+ write_int (w, set->indexes[j] + 1);
+ }
+
+ for (i = 0; i < n_sets; i++)
+ {
+ struct label_set *set = sets[i];
+
+ free (set->indexes);
+ free (set);
+ }
+ free (sets);
+ hmap_destroy (&same_sets);
}
/* Writes record type 6, document record. */
static void
write_documents (struct sfm_writer *w, const struct dictionary *d)
{
- size_t line_cnt = dict_get_document_line_cnt (d);
+ const struct string_array *docs = dict_get_documents (d);
+ const char *enc = dict_get_encoding (d);
+ size_t i;
write_int (w, 6); /* Record type. */
- write_int (w, line_cnt);
- write_bytes (w, dict_get_documents (d), line_cnt * DOC_LINE_LENGTH);
+ write_int (w, docs->n);
+ for (i = 0; i < docs->n; i++)
+ {
+ char *s = recode_string (enc, "UTF-8", docs->strings[i], -1);
+ size_t s_len = strlen (s);
+ size_t write_len = MIN (s_len, DOC_LINE_LENGTH);
+
+ write_bytes (w, s, write_len);
+ write_spaces (w, DOC_LINE_LENGTH - write_len);
+ free (s);
+ }
+}
+
+static void
+put_attrset (struct string *string, const struct attrset *attrs)
+{
+ const struct attribute *attr;
+ struct attrset_iterator i;
+
+ for (attr = attrset_first (attrs, &i); attr != NULL;
+ attr = attrset_next (attrs, &i))
+ {
+ size_t n_values = attribute_get_n_values (attr);
+ size_t j;
+
+ ds_put_cstr (string, attribute_get_name (attr));
+ ds_put_byte (string, '(');
+ for (j = 0; j < n_values; j++)
+ ds_put_format (string, "'%s'\n", attribute_get_value (attr, j));
+ ds_put_byte (string, ')');
+ }
+}
+
+static void
+write_data_file_attributes (struct sfm_writer *w,
+ const struct dictionary *d)
+{
+ struct string s = DS_EMPTY_INITIALIZER;
+ put_attrset (&s, dict_get_attributes (d));
+ write_utf8_record (w, dict_get_encoding (d), &s, 17);
+ ds_destroy (&s);
+}
+
+static void
+add_role_attribute (enum var_role role, struct attrset *attrs)
+{
+ struct attribute *attr;
+ const char *s;
+
+ switch (role)
+ {
+ case ROLE_INPUT:
+ default:
+ s = "0";
+ break;
+
+ case ROLE_TARGET:
+ s = "1";
+ break;
+
+ case ROLE_BOTH:
+ s = "2";
+ break;
+
+ case ROLE_NONE:
+ s = "3";
+ break;
+
+ case ROLE_PARTITION:
+ s = "4";
+ break;
+
+ case ROLE_SPLIT:
+ s = "5";
+ break;
+ }
+ attrset_delete (attrs, "$@Role");
+
+ attr = attribute_create ("$@Role");
+ attribute_add_value (attr, s);
+ attrset_add (attrs, attr);
+}
+
+static void
+write_variable_attributes (struct sfm_writer *w, const struct dictionary *d)
+{
+ struct string s = DS_EMPTY_INITIALIZER;
+ size_t n_vars = dict_get_var_cnt (d);
+ size_t n_attrsets = 0;
+ size_t i;
+
+ for (i = 0; i < n_vars; i++)
+ {
+ struct variable *v = dict_get_var (d, i);
+ struct attrset attrs;
+
+ attrset_clone (&attrs, var_get_attributes (v));
+
+ add_role_attribute (var_get_role (v), &attrs);
+ if (n_attrsets++)
+ ds_put_byte (&s, '/');
+ ds_put_format (&s, "%s:", var_get_name (v));
+ put_attrset (&s, &attrs);
+ attrset_destroy (&attrs);
+ }
+ if (n_attrsets)
+ write_utf8_record (w, dict_get_encoding (d), &s, 18);
+ ds_destroy (&s);
+}
+
+/* Write multiple response sets. If PRE_V14 is true, writes sets supported by
+ SPSS before release 14, otherwise writes sets supported only by later
+ versions. */
+static void
+write_mrsets (struct sfm_writer *w, const struct dictionary *dict,
+ bool pre_v14)
+{
+ const char *encoding = dict_get_encoding (dict);
+ struct string s = DS_EMPTY_INITIALIZER;
+ size_t n_mrsets;
+ size_t i;
+
+ if (is_encoding_ebcdic_compatible (encoding))
+ {
+ /* FIXME. */
+ return;
+ }
+
+ n_mrsets = dict_get_n_mrsets (dict);
+ if (n_mrsets == 0)
+ return;
+
+ for (i = 0; i < n_mrsets; i++)
+ {
+ const struct mrset *mrset = dict_get_mrset (dict, i);
+ char *name;
+ size_t j;
+
+ if ((mrset->type != MRSET_MD || mrset->cat_source != MRSET_COUNTEDVALUES)
+ != pre_v14)
+ continue;
+
+ name = recode_string (encoding, "UTF-8", mrset->name, -1);
+ ds_put_format (&s, "%s=", name);
+ free (name);
+
+ if (mrset->type == MRSET_MD)
+ {
+ char *counted;
+
+ if (mrset->cat_source == MRSET_COUNTEDVALUES)
+ ds_put_format (&s, "E %d ", mrset->label_from_var_label ? 11 : 1);
+ else
+ ds_put_byte (&s, 'D');
+
+ if (mrset->width == 0)
+ counted = xasprintf ("%.0f", mrset->counted.f);
+ else
+ counted = xmemdup0 (value_str (&mrset->counted, mrset->width),
+ mrset->width);
+ ds_put_format (&s, "%zu %s", strlen (counted), counted);
+ free (counted);
+ }
+ else
+ ds_put_byte (&s, 'C');
+ ds_put_byte (&s, ' ');
+
+ if (mrset->label && !mrset->label_from_var_label)
+ {
+ char *label = recode_string (encoding, "UTF-8", mrset->label, -1);
+ ds_put_format (&s, "%zu %s", strlen (label), label);
+ free (label);
+ }
+ else
+ ds_put_cstr (&s, "0 ");
+
+ for (j = 0; j < mrset->n_vars; j++)
+ {
+ const char *short_name_utf8 = var_get_short_name (mrset->vars[j], 0);
+ char *lower_name_utf8 = utf8_to_lower (short_name_utf8);
+ char *short_name = recode_string (encoding, "UTF-8",
+ lower_name_utf8, -1);
+ ds_put_format (&s, " %s", short_name);
+ free (short_name);
+ free (lower_name_utf8);
+ }
+ ds_put_byte (&s, '\n');
+ }
+
+ if (!ds_is_empty (&s))
+ write_string_record (w, ds_ss (&s), pre_v14 ? 7 : 19);
+ ds_destroy (&s);
}
/* Write the alignment, width and scale values. */
var_get_short_name (v, 0), var_get_width (v), 0);
}
if (!ds_is_empty (&map))
+ write_utf8_record (w, dict_get_encoding (dict), &map, 14);
+ ds_destroy (&map);
+}
+
+static void
+write_long_string_value_labels (struct sfm_writer *w,
+ const struct dictionary *dict)
+{
+ const char *encoding = dict_get_encoding (dict);
+ size_t n_vars = dict_get_var_cnt (dict);
+ size_t size, i;
+ off_t start UNUSED;
+
+ /* Figure out the size in advance. */
+ size = 0;
+ for (i = 0; i < n_vars; i++)
{
- write_int (w, 7); /* Record type. */
- write_int (w, 14); /* Record subtype. */
- write_int (w, 1); /* Data item (char) size. */
- write_int (w, ds_length (&map)); /* Number of data items. */
- write_bytes (w, ds_data (&map), ds_length (&map));
+ struct variable *var = dict_get_var (dict, i);
+ const struct val_labs *val_labs = var_get_value_labels (var);
+ int width = var_get_width (var);
+ const struct val_lab *val_lab;
+
+ if (val_labs_count (val_labs) == 0 || width < 9)
+ continue;
+
+ size += 12;
+ size += recode_string_len (encoding, "UTF-8", var_get_name (var), -1);
+ for (val_lab = val_labs_first (val_labs); val_lab != NULL;
+ val_lab = val_labs_next (val_labs, val_lab))
+ {
+ size += 8 + width;
+ size += recode_string_len (encoding, "UTF-8",
+ val_lab_get_escaped_label (val_lab), -1);
+ }
}
- ds_destroy (&map);
+ if (size == 0)
+ return;
+
+ write_int (w, 7); /* Record type. */
+ write_int (w, 21); /* Record subtype */
+ write_int (w, 1); /* Data item (byte) size. */
+ write_int (w, size); /* Number of data items. */
+
+ start = ftello (w->file);
+ for (i = 0; i < n_vars; i++)
+ {
+ struct variable *var = dict_get_var (dict, i);
+ const struct val_labs *val_labs = var_get_value_labels (var);
+ int width = var_get_width (var);
+ const struct val_lab *val_lab;
+ char *var_name;
+
+ if (val_labs_count (val_labs) == 0 || width < 9)
+ continue;
+
+ var_name = recode_string (encoding, "UTF-8", var_get_name (var), -1);
+ write_int (w, strlen (var_name));
+ write_bytes (w, var_name, strlen (var_name));
+ free (var_name);
+
+ write_int (w, width);
+ write_int (w, val_labs_count (val_labs));
+ for (val_lab = val_labs_first (val_labs); val_lab != NULL;
+ val_lab = val_labs_next (val_labs, val_lab))
+ {
+ char *label;
+ size_t len;
+
+ write_int (w, width);
+ write_bytes (w, value_str (val_lab_get_value (val_lab), width),
+ width);
+
+ label = recode_string (var_get_encoding (var), "UTF-8",
+ val_lab_get_escaped_label (val_lab), -1);
+ len = strlen (label);
+ write_int (w, len);
+ write_bytes (w, label, len);
+ free (label);
+ }
+ }
+ assert (ftello (w->file) == start + size);
+}
+
+static void
+write_long_string_missing_values (struct sfm_writer *w,
+ const struct dictionary *dict)
+{
+ const char *encoding = dict_get_encoding (dict);
+ size_t n_vars = dict_get_var_cnt (dict);
+ size_t size, i;
+ off_t start UNUSED;
+
+ /* Figure out the size in advance. */
+ size = 0;
+ for (i = 0; i < n_vars; i++)
+ {
+ struct variable *var = dict_get_var (dict, i);
+ const struct missing_values *mv = var_get_missing_values (var);
+ int width = var_get_width (var);
+
+ if (mv_is_empty (mv) || width < 9)
+ continue;
+
+ size += 4;
+ size += recode_string_len (encoding, "UTF-8", var_get_name (var), -1);
+ size += 1;
+ size += mv_n_values (mv) * (4 + 8);
+ }
+ if (size == 0)
+ return;
+
+ write_int (w, 7); /* Record type. */
+ write_int (w, 22); /* Record subtype */
+ write_int (w, 1); /* Data item (byte) size. */
+ write_int (w, size); /* Number of data items. */
+
+ start = ftello (w->file);
+ for (i = 0; i < n_vars; i++)
+ {
+ struct variable *var = dict_get_var (dict, i);
+ const struct missing_values *mv = var_get_missing_values (var);
+ int width = var_get_width (var);
+ uint8_t n_missing_values;
+ char *var_name;
+ int j;
+
+ if (mv_is_empty (mv) || width < 9)
+ continue;
+
+ var_name = recode_string (encoding, "UTF-8", var_get_name (var), -1);
+ write_int (w, strlen (var_name));
+ write_bytes (w, var_name, strlen (var_name));
+ free (var_name);
+
+ n_missing_values = mv_n_values (mv);
+ write_bytes (w, &n_missing_values, 1);
+
+ for (j = 0; j < n_missing_values; j++)
+ {
+ const union value *value = mv_get_value (mv, j);
+
+ write_int (w, 8);
+ write_bytes (w, value_str (value, width), 8);
+ }
+ }
+ assert (ftello (w->file) == start + size);
+}
+
+static void
+write_encoding_record (struct sfm_writer *w,
+ const struct dictionary *d)
+{
+ /* IANA says "...character set names may be up to 40 characters taken
+ from the printable characters of US-ASCII," so character set names
+ don't need to be recoded to be in UTF-8.
+
+ We convert encoding names to uppercase because SPSS writes encoding
+ names in uppercase. */
+ char *encoding = xstrdup (dict_get_encoding (d));
+ str_uppercase (encoding);
+ write_string_record (w, ss_cstr (encoding), 20);
+ free (encoding);
}
/* Writes the long variable name table. */
for (i = 0; i < dict_get_var_cnt (dict); i++)
{
struct variable *v = dict_get_var (dict, i);
-
if (i)
- ds_put_char (&map, '\t');
+ ds_put_byte (&map, '\t');
ds_put_format (&map, "%s=%s",
var_get_short_name (v, 0), var_get_name (v));
}
-
- write_int (w, 7); /* Record type. */
- write_int (w, 13); /* Record subtype. */
- write_int (w, 1); /* Data item (char) size. */
- write_int (w, ds_length (&map)); /* Number of data items. */
- write_bytes (w, ds_data (&map), ds_length (&map));
-
+ write_utf8_record (w, dict_get_encoding (dict), &map, 13);
ds_destroy (&map);
}
/* Write integer information record. */
static void
-write_integer_info_record (struct sfm_writer *w)
+write_integer_info_record (struct sfm_writer *w,
+ const struct dictionary *d)
{
+ const char *dict_encoding = dict_get_encoding (d);
int version_component[3];
int float_format;
+ int codepage;
/* Parse the version string. */
memset (version_component, 0, sizeof version_component);
else
abort ();
+ /* Choose codepage. */
+ codepage = sys_get_codepage_from_encoding (dict_encoding);
+ if (codepage == 0)
+ {
+ /* The codepage is unknown. Choose a default.
+
+ For an EBCDIC-compatible encoding, use the value for EBCDIC.
+
+ For an ASCII-compatible encoding, default to "7-bit ASCII", because
+ many files use this codepage number regardless of their actual
+ encoding.
+ */
+ if (is_encoding_ascii_compatible (dict_encoding))
+ codepage = 2;
+ else if (is_encoding_ebcdic_compatible (dict_encoding))
+ codepage = 1;
+ }
+
/* Write record. */
write_int (w, 7); /* Record type. */
write_int (w, 3); /* Record subtype. */
write_int (w, float_format);
write_int (w, 1); /* Compression code. */
write_int (w, INTEGER_NATIVE == INTEGER_MSB_FIRST ? 1 : 2);
- write_int (w, 2); /* 7-bit ASCII. */
+ write_int (w, codepage);
}
/* Write floating-point information record. */
if (ferror (w->file))
{
casewriter_force_error (writer);
- case_destroy (c);
+ case_unref (c);
return;
}
w->case_cnt++;
- if (!w->compress)
+ if (w->compression == ANY_COMP_NONE)
write_case_uncompressed (w, c);
else
write_case_compressed (w, c);
- case_destroy (c);
+ case_unref (c);
}
/* Destroys system file writer W. */
}
/* Returns true if an I/O error has occurred on WRITER, false otherwise. */
-bool
+static bool
write_error (const struct sfm_writer *writer)
{
return ferror (writer->file);
/* Closes a system file after we're done with it.
Returns true if successful, false if an I/O error occurred. */
-bool
+static bool
close_writer (struct sfm_writer *w)
{
bool ok;
if (w->file != NULL)
{
/* Flush buffer. */
- if (w->opcode_cnt > 0)
- flush_compressed (w);
+ flush_compressed (w);
+ if (w->compression == ANY_COMP_ZLIB)
+ {
+ finish_zstream (w);
+ write_ztrailer (w);
+ }
fflush (w->file);
ok = !write_error (w);
/* Seek back to the beginning and update the number of cases.
This is just a courtesy to later readers, so there's no need
to check return values or report errors. */
- if (ok && w->case_cnt <= INT32_MAX && !fseek (w->file, 80, SEEK_SET))
+ if (ok && w->case_cnt <= INT32_MAX && !fseeko (w->file, 80, SEEK_SET))
{
write_int (w, w->case_cnt);
clearerr (w->file);
ok = false;
if (!ok)
- msg (ME, _("An I/O error occurred writing system file \"%s\"."),
+ msg (ME, _("An I/O error occurred writing system file `%s'."),
fh_get_file_name (w->fh));
+
+ if (ok ? !replace_file_commit (w->rf) : !replace_file_abort (w->rf))
+ ok = false;
}
- fh_close (w->fh, "system file", "we");
+ free (w->blocks);
+
+ fh_unlock (w->lock);
+ fh_unref (w->fh);
free (w->sfm_vars);
free (w);
}
/* System file writer casewriter class. */
-static struct casewriter_class sys_file_casewriter_class =
+static const struct casewriter_class sys_file_casewriter_class =
{
sys_file_casewriter_write,
sys_file_casewriter_destroy,
\f
/* Writes case C to system file W, without compressing it. */
static void
-write_case_uncompressed (struct sfm_writer *w, struct ccase *c)
+write_case_uncompressed (struct sfm_writer *w, const struct ccase *c)
{
size_t i;
{
struct sfm_var *v = &w->sfm_vars[i];
- if (v->width == 0)
+ if (v->var_width == 0)
write_float (w, case_num_idx (c, v->case_index));
else
{
write_bytes (w, case_str_idx (c, v->case_index) + v->offset,
- v->width);
+ v->segment_width);
write_spaces (w, v->padding);
}
}
/* Writes case C to system file W, with compression. */
static void
-write_case_compressed (struct sfm_writer *w, struct ccase *c)
+write_case_compressed (struct sfm_writer *w, const struct ccase *c)
{
size_t i;
{
struct sfm_var *v = &w->sfm_vars[i];
- if (v->width == 0)
+ if (v->var_width == 0)
{
double d = case_num_idx (c, v->case_index);
if (d == SYSMIS)
&& d == (int) d)
put_cmp_opcode (w, (int) d + COMPRESSION_BIAS);
else
- {
- put_cmp_opcode (w, 253);
- put_cmp_number (w, d);
- }
+ put_cmp_number (w, d);
}
else
{
multiple of 8, by ensuring that the final partial
oct (8 byte unit) is treated as padded with spaces
on the right. */
- for (width = v->width; width > 0; width -= 8, offset += 8)
+ for (width = v->segment_width; width > 0; width -= 8, offset += 8)
{
const void *data = case_str_idx (c, v->case_index) + offset;
int chunk_size = MIN (width, 8);
if (!memcmp (data, " ", chunk_size))
put_cmp_opcode (w, 254);
else
- {
- put_cmp_opcode (w, 253);
- put_cmp_string (w, data, chunk_size);
- }
+ put_cmp_string (w, data, chunk_size);
}
/* This code deals properly with padding that is not a
}
}
-/* Flushes buffered compressed opcodes and data to W.
- The compression buffer must not be empty. */
+static bool
+start_zstream (struct sfm_writer *w)
+{
+ int error;
+
+ error = deflateInit (&w->zstream, 1);
+ if (error != Z_OK)
+ {
+ msg (ME, _("Failed to initialize ZLIB for compression (%s)."),
+ w->zstream.msg);
+ return false;
+ }
+ return true;
+}
+
static void
-flush_compressed (struct sfm_writer *w)
+finish_zstream (struct sfm_writer *w)
+{
+ struct zblock *block;
+ int error;
+
+ assert (w->zstream.total_in <= ZBLOCK_SIZE);
+
+ w->zstream.next_in = NULL;
+ w->zstream.avail_in = 0;
+ do
+ {
+ uint8_t buf[4096];
+
+ w->zstream.next_out = buf;
+ w->zstream.avail_out = sizeof buf;
+ error = deflate (&w->zstream, Z_FINISH);
+ write_bytes (w, buf, w->zstream.next_out - buf);
+ }
+ while (error == Z_OK);
+
+ if (error != Z_STREAM_END)
+ msg (ME, _("Failed to complete ZLIB stream compression (%s)."),
+ w->zstream.msg);
+
+ if (w->n_blocks >= w->allocated_blocks)
+ w->blocks = x2nrealloc (w->blocks, &w->allocated_blocks,
+ sizeof *w->blocks);
+ block = &w->blocks[w->n_blocks++];
+ block->uncompressed_size = w->zstream.total_in;
+ block->compressed_size = w->zstream.total_out;
+ deflateEnd (&w->zstream);
+}
+
+static void
+write_zlib (struct sfm_writer *w, const void *data_, unsigned int n)
+{
+ const uint8_t *data = data_;
+
+ while (n > 0)
+ {
+ unsigned int chunk;
+
+ if (w->zstream.total_in >= ZBLOCK_SIZE)
+ {
+ finish_zstream (w);
+ start_zstream (w);
+ }
+
+ chunk = MIN (n, ZBLOCK_SIZE - w->zstream.total_in);
+
+ w->zstream.next_in = CONST_CAST (uint8_t *, data);
+ w->zstream.avail_in = chunk;
+ do
+ {
+ uint8_t buf[4096];
+ int error;
+
+ w->zstream.next_out = buf;
+ w->zstream.avail_out = sizeof buf;
+ error = deflate (&w->zstream, Z_NO_FLUSH);
+ write_bytes (w, buf, w->zstream.next_out - buf);
+ if (error != Z_OK)
+ {
+ msg (ME, _("ZLIB stream compression failed (%s)."),
+ w->zstream.msg);
+ return;
+ }
+ }
+ while (w->zstream.avail_in > 0 || w->zstream.avail_out == 0);
+ data += chunk;
+ n -= chunk;
+ }
+}
+
+static void
+write_ztrailer (struct sfm_writer *w)
{
- assert (w->opcode_cnt > 0 && w->opcode_cnt <= 8);
+ long long int uncompressed_ofs;
+ long long int compressed_ofs;
+ const struct zblock *block;
+
+ write_int64 (w, -COMPRESSION_BIAS);
+ write_int64 (w, 0);
+ write_int (w, ZBLOCK_SIZE);
+ write_int (w, w->n_blocks);
+
+ uncompressed_ofs = w->zstart;
+ compressed_ofs = w->zstart + 24;
+ for (block = w->blocks; block < &w->blocks[w->n_blocks]; block++)
+ {
+ write_int64 (w, uncompressed_ofs);
+ write_int64 (w, compressed_ofs);
+ write_int (w, block->uncompressed_size);
+ write_int (w, block->compressed_size);
- write_bytes (w, w->opcodes, w->opcode_cnt);
- write_zeros (w, 8 - w->opcode_cnt);
+ uncompressed_ofs += block->uncompressed_size;
+ compressed_ofs += block->compressed_size;
+ }
- write_bytes (w, w->data, w->data_cnt * sizeof *w->data);
+ if (!fseeko (w->file, w->zstart + 8, SEEK_SET))
+ {
+ write_int64 (w, compressed_ofs);
+ write_int64 (w, 24 + (w->n_blocks * 24));
+ }
+ else
+ msg (ME, _("%s: Seek failed (%s)."),
+ fh_get_file_name (w->fh), strerror (errno));
+}
- w->opcode_cnt = w->data_cnt = 0;
+/* Flushes buffered compressed opcodes and data to W. */
+static void
+flush_compressed (struct sfm_writer *w)
+{
+ if (w->n_opcodes)
+ {
+ unsigned int n = 8 * (1 + w->n_elements);
+ if (w->compression == ANY_COMP_SIMPLE)
+ write_bytes (w, w->cbuf, n);
+ else
+ write_zlib (w, w->cbuf, n);
+
+ w->n_opcodes = w->n_elements = 0;
+ memset (w->cbuf[0], 0, 8);
+ }
}
/* Appends OPCODE to the buffered set of compression opcodes in
static void
put_cmp_opcode (struct sfm_writer *w, uint8_t opcode)
{
- if (w->opcode_cnt >= 8)
+ if (w->n_opcodes >= 8)
flush_compressed (w);
- w->opcodes[w->opcode_cnt++] = opcode;
+ w->cbuf[0][w->n_opcodes++] = opcode;
}
-/* Appends NUMBER to the buffered compression data in W. The
- buffer must not be full; the way to assure that is to call
- this function only just after a call to put_cmp_opcode, which
- will flush the buffer as necessary. */
+/* Appends NUMBER to the buffered compression data in W. */
static void
put_cmp_number (struct sfm_writer *w, double number)
{
- assert (w->opcode_cnt > 0);
- assert (w->data_cnt < 8);
-
- convert_double_to_output_format (number, w->data[w->data_cnt++]);
+ put_cmp_opcode (w, 253);
+ convert_double_to_output_format (number, w->cbuf[++w->n_elements]);
}
/* Appends SIZE bytes of DATA to the buffered compression data in
W, followed by enough spaces to pad the output data to exactly
- 8 bytes (thus, SIZE must be no greater than 8). The buffer
- must not be full; the way to assure that is to call this
- function only just after a call to put_cmp_opcode, which will
- flush the buffer as necessary. */
+ 8 bytes (thus, SIZE must be no greater than 8). */
static void
put_cmp_string (struct sfm_writer *w, const void *data, size_t size)
{
- assert (w->opcode_cnt > 0);
- assert (w->data_cnt < 8);
assert (size <= 8);
- memset (w->data[w->data_cnt], ' ', 8);
- memcpy (w->data[w->data_cnt], data, size);
- w->data_cnt++;
+ put_cmp_opcode (w, 253);
+ w->n_elements++;
+ memset (w->cbuf[w->n_elements], w->space, 8);
+ memcpy (w->cbuf[w->n_elements], data, size);
}
\f
/* Writes 32-bit integer X to the output file for writer W. */
write_bytes (w, &x, sizeof x);
}
+/* Writes 64-bit integer X to the output file for writer W. */
+static void
+write_int64 (struct sfm_writer *w, int64_t x)
+{
+ write_bytes (w, &x, sizeof x);
+}
+
/* Converts NATIVE to the 64-bit format used in output files in
OUTPUT. */
static inline void
write_float (w, value->f);
else
{
- write_bytes (w, value->s, width);
+ write_bytes (w, value_str (value, width), width);
write_zeros (w, 8 - width);
}
}
-/* Writes null-terminated STRING in a field of the given WIDTH to
- W. If WIDTH is longer than WIDTH, it is truncated; if WIDTH
- is narrowed, it is padded on the right with spaces. */
+/* Writes null-terminated STRING in a field of the given WIDTH to W. If STRING
+ is longer than WIDTH, it is truncated; if STRING is shorter than WIDTH, it
+ is padded on the right with spaces. */
static void
write_string (struct sfm_writer *w, const char *string, size_t width)
{
size_t pad_bytes = width - data_bytes;
write_bytes (w, string, data_bytes);
while (pad_bytes-- > 0)
- putc (' ', w->file);
+ putc (w->space, w->file);
+}
+
+/* Recodes null-terminated UTF-8 encoded STRING into ENCODING, and writes the
+ recoded version in a field of the given WIDTH to W. The string is truncated
+ or padded on the right with spaces to exactly WIDTH bytes. */
+static void
+write_utf8_string (struct sfm_writer *w, const char *encoding,
+ const char *string, size_t width)
+{
+ char *s = recode_string (encoding, "UTF-8", string, -1);
+ write_string (w, s, width);
+ free (s);
+}
+
+/* Writes a record with type 7, subtype SUBTYPE that contains CONTENT recoded
+ from UTF-8 encoded into ENCODING. */
+static void
+write_utf8_record (struct sfm_writer *w, const char *encoding,
+ const struct string *content, int subtype)
+{
+ struct substring s;
+
+ s = recode_substring_pool (encoding, "UTF-8", ds_ss (content), NULL);
+ write_string_record (w, s, subtype);
+ ss_dealloc (&s);
+}
+
+/* Writes a record with type 7, subtype SUBTYPE that contains the string
+ CONTENT. */
+static void
+write_string_record (struct sfm_writer *w,
+ const struct substring content, int subtype)
+{
+ write_int (w, 7);
+ write_int (w, subtype);
+ write_int (w, 1);
+ write_int (w, ss_length (content));
+ write_bytes (w, ss_data (content), ss_length (content));
}
/* Writes SIZE bytes of DATA to W's output file. */
write_spaces (struct sfm_writer *w, size_t n)
{
while (n-- > 0)
- putc (' ', w->file);
+ putc (w->space, w->file);
}
projects / pspp / blobdiff