/* PSPP - a program for statistical analysis.
- Copyright (C) 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009, 2010, 2011, 2013, 2020 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 "spreadsheet-reader.h"
+#include <libpspp/assertion.h>
+#include "gnumeric-reader.h"
+#include "ods-reader.h"
+
#include <libpspp/str.h>
#include <stdio.h>
#include <string.h>
+#include <gl/xalloc.h>
+#include <gl/c-xvasprintf.h>
+#include <stdlib.h>
+
+struct spreadsheet *
+spreadsheet_ref (struct spreadsheet *s)
+{
+ s->ref_cnt++;
+ return s;
+}
+
+void
+spreadsheet_unref (struct spreadsheet *s)
+{
+ if (--s->ref_cnt == 0)
+ s->destroy (s);
+}
+
+
+struct casereader *
+spreadsheet_make_reader (struct spreadsheet *s,
+ const struct spreadsheet_read_options *opts)
+{
+ return s->make_reader (s, opts);
+}
+
+const char *
+spreadsheet_get_sheet_name (struct spreadsheet *s, int n)
+{
+ return s->get_sheet_name (s, n);
+}
+
+
+char *
+spreadsheet_get_sheet_range (struct spreadsheet *s, int n)
+{
+ return s->get_sheet_range (s, n);
+}
+
+int
+spreadsheet_get_sheet_n_sheets (struct spreadsheet *s)
+{
+ return s->get_sheet_n_sheets (s);
+}
+
+unsigned int
+spreadsheet_get_sheet_n_rows (struct spreadsheet *s, int n)
+{
+ return s->get_sheet_n_rows (s, n);
+}
+
+unsigned int
+spreadsheet_get_sheet_n_columns (struct spreadsheet *s, int n)
+{
+ return s->get_sheet_n_columns (s, n);
+}
+
+char *
+spreadsheet_get_cell (struct spreadsheet *s, int n, int row, int column)
+{
+ return s->get_sheet_cell (s, n, row, column);
+}
+
+
+#define RADIX 26
+
+static void
+reverse (char *s, int len)
+{
+ int i;
+ for (i = 0; i < len / 2; ++i)
+ {
+ char tmp = s[len - i - 1];
+ s[len - i -1] = s[i];
+ s[i] = tmp;
+ }
+}
+
/* Convert a string, which is an integer encoded in base26
IE, A=0, B=1, ... Z=25 to the integer it represents.
greater than 1 are implicitly incremented by 1, so
AA = 0 + 1*26, AB = 1 + 1*26,
ABC = 2 + 2*26 + 1*26^2 ....
+ On error, this function returns -1
*/
int
-pseudo_base26 (const char *str)
+ps26_to_int (const char *str)
{
int i;
int multiplier = 1;
int result = 0;
int len = strlen (str);
- for ( i = len - 1 ; i >= 0; --i)
+ for (i = len - 1 ; i >= 0; --i)
{
- int mantissa = (str[i] - 'A');
-
- if ( mantissa < 0 || mantissa > 25 )
+ char c = str[i];
+ if (c < 'A' || c > 'Z')
return -1;
+ int mantissa = (c - 'A');
+
+ assert (mantissa >= 0);
+ assert (mantissa < RADIX);
- if ( i != len - 1)
+ if (i != len - 1)
mantissa++;
result += mantissa * multiplier;
-
- multiplier *= 26;
+ multiplier *= RADIX;
}
return result;
}
+/* Convert an integer, which must be non-negative,
+ to pseudo base 26.
+ The caller must free the return value when no longer required. */
+char *
+int_to_ps26 (int i)
+{
+ char *ret = NULL;
+
+ int lower = 0;
+ long long int base = RADIX;
+ int exp = 1;
+
+ if (i < 0)
+ return NULL;
+
+ while (i > lower + base - 1)
+ {
+ lower += base;
+ base *= RADIX;
+ assert (base > 0);
+ exp++;
+ }
+
+ i -= lower;
+ i += base;
+
+ ret = xmalloc (exp + 1);
+
+ exp = 0;
+ do
+ {
+ ret[exp++] = (i % RADIX) + 'A';
+ i /= RADIX;
+ }
+ while (i > 1);
+
+ ret[exp]='\0';
+
+ reverse (ret, exp);
+ return ret;
+}
+
+
+char *
+create_cell_ref (int col0, int row0)
+{
+ char *cs0 ;
+ char *s ;
+
+ if (col0 < 0) return NULL;
+ if (row0 < 0) return NULL;
+
+ cs0 = int_to_ps26 (col0);
+ s = c_xasprintf ("%s%d", cs0, row0 + 1);
+
+ free (cs0);
+
+ return s;
+}
+
+char *
+create_cell_range (int col0, int row0, int coli, int rowi)
+{
+ char *s0 = create_cell_ref (col0, row0);
+ char *si = create_cell_ref (coli, rowi);
+
+ char *s = c_xasprintf ("%s:%s", s0, si);
+
+ free (s0);
+ free (si);
+
+ return s;
+}
+
/* Convert a cell reference in the form "A1:B2", to
integers. A1 means column zero, row zero.
int n = sscanf (ref, "%4[a-zA-Z]%d:%4[a-zA-Z]%d",
startcol, &startrow,
stopcol, &stoprow);
- if ( n != 4)
+ if (n != 4)
return false;
str_uppercase (startcol);
- *col0 = pseudo_base26 (startcol);
+ *col0 = ps26_to_int (startcol);
str_uppercase (stopcol);
- *coli = pseudo_base26 (stopcol);
+ *coli = ps26_to_int (stopcol);
*row0 = startrow - 1;
*rowi = stoprow - 1 ;
return true;
}
-