/* PSPP - a program for statistical analysis.
- Copyright (C) 2007, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009, 2010, 2011, 2012, 2013 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
static void source_release_column (struct source *, int ofs, int width);
static bool source_in_use (const struct source *);
-static bool source_read (const struct column *, casenumber row, union value *);
+static bool source_read (const struct column *, casenumber row, union value *,
+ size_t n);
static bool source_write (const struct column *, casenumber row,
- const union value *);
+ const union value *, size_t n);
static bool source_write_column (struct column *, const union value *);
static bool source_has_backing (const struct source *);
if (width == 0)
return &value->f;
else
- return value_str_rw (value, width);
+ return value->s;
}
/* Returns the number of bytes needed to store all the values in
size_t src_ofs;
int src_width;
- void (*resize_cb) (const union value *, union value *, void *aux);
- void *resize_cb_aux;
+ void (*resize_cb) (const union value *, union value *, const void *aux);
+ const void *resize_cb_aux;
union value dst_value;
size_t dst_ofs;
bool
datasheet_resize_column (struct datasheet *ds, size_t column, int new_width,
void (*resize_cb) (const union value *,
- union value *, void *aux),
- void *resize_cb_aux)
+ union value *, const void *aux),
+ const void *resize_cb_aux)
{
struct column old_col;
struct column *col;
for (lrow = 0; lrow < n_rows; lrow++)
{
unsigned long int prow = axis_map (ds->rows, lrow);
- if (!source_read (&old_col, prow, &src))
+ if (!source_read (&old_col, prow, &src, 1))
{
/* FIXME: back out col changes. */
- return false;
+ break;
}
resize_cb (&src, &dst, resize_cb_aux);
- if (!source_write (col, prow, &dst))
+ if (!source_write (col, prow, &dst, 1))
{
/* FIXME: back out col changes. */
- return false;
+ break;
}
}
+ value_destroy (&src, old_width);
+ value_destroy (&dst, new_width);
+ if (lrow < n_rows)
+ return false;
release_source (ds, old_col.source);
}
successful, false on I/O error. On failure, ROW might be
partially modified or corrupted. */
bool
-datasheet_put_value (struct datasheet *ds UNUSED, casenumber row UNUSED,
- size_t column UNUSED, const union value *value UNUSED)
+datasheet_put_value (struct datasheet *ds, casenumber row,
+ size_t column, const union value *value)
{
return rw_case (ds, OP_WRITE, row, column, 1, (union value *) value);
}
while (cnt > 0)
{
unsigned long first_phy;
- unsigned long phy_cnt;
+ unsigned long n_phys;
unsigned long i;
/* Allocate physical rows from the pool of available
rows. */
- if (!axis_allocate (ds->rows, cnt, &first_phy, &phy_cnt))
+ if (!axis_allocate (ds->rows, cnt, &first_phy, &n_phys))
{
/* No rows were available. Extend the row axis to make
some new ones available. */
- phy_cnt = cnt;
+ n_phys = cnt;
first_phy = axis_extend (ds->rows, cnt);
}
/* Insert the new rows into the row mapping. */
- axis_insert (ds->rows, before, first_phy, phy_cnt);
+ axis_insert (ds->rows, before, first_phy, n_phys);
/* Initialize the new rows. */
- for (i = 0; i < phy_cnt; i++)
+ for (i = 0; i < n_phys; i++)
if (!datasheet_put_row (ds, before + i, c[i]))
{
while (++i < cnt)
case_unref (c[i]);
- datasheet_delete_rows (ds, before - added, phy_cnt + added);
+ datasheet_delete_rows (ds, before - added, n_phys + added);
return false;
}
/* Advance. */
- c += phy_cnt;
- cnt -= phy_cnt;
- before += phy_cnt;
- added += phy_cnt;
+ c += n_phys;
+ cnt -= n_phys;
+ before += n_phys;
+ added += n_phys;
}
return true;
}
/* "advance" function for the datasheet random casereader. */
static void
datasheet_reader_advance (struct casereader *reader UNUSED, void *ds_,
- casenumber case_cnt)
+ casenumber n_cases)
{
struct datasheet *ds = ds_;
- datasheet_delete_rows (ds, 0, case_cnt);
+ datasheet_delete_rows (ds, 0, n_cases);
}
/* Random casereader class for a datasheet. */
casenumber lrow, size_t start_column, size_t n_columns,
union value data[])
{
+ struct column *columns = &ds->columns[start_column];
casenumber prow;
size_t i;
assert (start_column + n_columns <= datasheet_get_n_columns (ds));
prow = axis_map (ds->rows, lrow);
- for (i = 0; i < n_columns; i++)
+ for (i = 0; i < n_columns;)
{
- struct column *c = &ds->columns[start_column + i];
- if (c->width >= 0)
+ struct source *source = columns[i].source;
+ size_t j;
+ bool ok;
+
+ if (columns[i].width < 0)
{
- bool ok;
+ i++;
+ continue;
+ }
- if (op == OP_READ)
- ok = source_read (c, prow, &data[i]);
- else
- ok = source_write (c, prow, &data[i]);
+ for (j = i + 1; j < n_columns; j++)
+ if (columns[j].width < 0 || columns[j].source != source)
+ break;
- if (!ok)
- {
- taint_set_taint (ds->taint);
- return false;
- }
+ if (op == OP_READ)
+ ok = source_read (&columns[i], prow, &data[i], j - i);
+ else
+ ok = source_write (&columns[i], prow, &data[i], j - i);
+
+ if (!ok)
+ {
+ taint_set_taint (ds->taint);
+ return false;
}
+
+ i = j;
}
return true;
}
return source->backing_rows;
}
-/* Reads the given COLUMN from SOURCE in the given ROW, into
- VALUE. Returns true if successful, false on I/O error.
+/* Reads the N COLUMNS in the given ROW, into the N VALUES. Returns true if
+ successful, false on I/O error.
- The caller must have initialized VALUE with the proper
- width. */
+ All of the COLUMNS must have the same source.
+
+ The caller must have initialized VALUES with the proper width. */
static bool
-source_read (const struct column *column, casenumber row, union value *value)
+source_read (const struct column columns[], casenumber row,
+ union value values[], size_t n)
{
- struct source *source = column->source;
+ struct source *source = columns[0].source;
+ size_t i;
- assert (column->width >= 0);
if (source->backing == NULL
|| sparse_xarray_contains_row (source->data, row))
- return sparse_xarray_read (source->data, row, column->byte_ofs,
- width_to_n_bytes (column->width),
- value_to_data (value, column->width));
+ {
+ bool ok = true;
+
+ for (i = 0; i < n && ok; i++)
+ ok = sparse_xarray_read (source->data, row, columns[i].byte_ofs,
+ width_to_n_bytes (columns[i].width),
+ value_to_data (&values[i], columns[i].width));
+ return ok;
+ }
else
{
struct ccase *c = casereader_peek (source->backing, row);
bool ok = c != NULL;
if (ok)
{
- value_copy (value, case_data_idx (c, column->value_ofs),
- column->width);
+ for (i = 0; i < n; i++)
+ value_copy (&values[i], case_data_idx (c, columns[i].value_ofs),
+ columns[i].width);
case_unref (c);
}
return ok;
return true;
}
-/* Writes VALUE to SOURCE in the given ROW and COLUMN. Returns
- true if successful, false on I/O error. On error, the row's
- data may be completely or partially corrupted, both inside and
- outside the region to be written. */
+/* Writes the N VALUES to their source in the given ROW and COLUMNS. Returns
+ true if successful, false on I/O error. On error, the row's data may be
+ completely or partially corrupted, both inside and outside the region to be
+ written.
+
+ All of the COLUMNS must have the same source. */
static bool
-source_write (const struct column *column, casenumber row,
- const union value *value)
+source_write (const struct column columns[], casenumber row,
+ const union value values[], size_t n)
{
- struct source *source = column->source;
+ struct source *source = columns[0].source;
struct casereader *backing = source->backing;
+ size_t i;
- assert (column->width >= 0);
if (backing != NULL
&& !sparse_xarray_contains_row (source->data, row)
&& row < source->backing_rows)
return false;
}
- return sparse_xarray_write (source->data, row, column->byte_ofs,
- width_to_n_bytes (column->width),
- value_to_data (value, column->width));
+ for (i = 0; i < n; i++)
+ if (!sparse_xarray_write (source->data, row, columns[i].byte_ofs,
+ width_to_n_bytes (columns[i].width),
+ value_to_data (&values[i], columns[i].width)))
+ return false;
+ return true;
}
/* Within SOURCE, which must not have a backing casereader,
projects / pspp / blobdiff