Add support for reading and writing SPV files.

[pspp] / src / output / spv / spv-legacy-data.h

diff --git a/src/output/spv/spv-legacy-data.h b/src/output/spv/spv-legacy-data.h
new file mode 100644 (file)
index 0000000..1e8fa2d
--- /dev/null
+++ b/src/output/spv/spv-legacy-data.h
@@ -0,0 +1,89 @@
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 2018 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/>. */
+
+#ifndef OUTPUT_SPV_LEGACY_DATA_H
+#define OUTPUT_SPV_LEGACY_DATA_H 1
+
+/* SPSS Viewer (SPV) legacy binary data decoder.
+
+   Used by spv.h, not useful directly. */
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include "libpspp/compiler.h"
+
+struct spv_data
+  {
+    struct spv_data_source *sources;
+    size_t n_sources;
+  };
+
+void spv_data_uninit (struct spv_data *);
+void spv_data_dump (const struct spv_data *, FILE *);
+
+struct spv_data_source *spv_data_find_source (const struct spv_data *,
+                                              const char *source_name);
+struct spv_data_variable *spv_data_find_variable (const struct spv_data *,
+                                                  const char *source_name,
+                                                  const char *variable_name);
+
+struct spv_data_source
+  {
+    char *source_name;
+    struct spv_data_variable *vars;
+    size_t n_vars, n_values;
+  };
+
+void spv_data_source_uninit (struct spv_data_source *);
+void spv_data_source_dump (const struct spv_data_source *, FILE *);
+
+struct spv_data_variable *spv_data_source_find_variable (
+  const struct spv_data_source *, const char *variable_name);
+
+struct spv_data_variable
+  {
+    char *var_name;
+    struct spv_data_value *values;
+    size_t n_values;
+  };
+
+void spv_data_variable_uninit (struct spv_data_variable *);
+void spv_data_variable_dump (const struct spv_data_variable *, FILE *);
+
+struct spv_data_value
+  {
+    double index;
+    int width;
+    union
+      {
+        double d;
+        char *s;
+      };
+  };
+
+void spv_data_value_uninit (struct spv_data_value *);
+bool spv_data_value_equal (const struct spv_data_value *,
+                           const struct spv_data_value *);
+struct spv_data_value *spv_data_values_clone (const struct spv_data_value *,
+                                              size_t n);
+
+char *spv_legacy_data_decode (const uint8_t *in, size_t size,
+                              struct spv_data *out) WARN_UNUSED_RESULT;
+void spv_data_value_dump (const struct spv_data_value *, FILE *);
+
+#endif /* output/spv/spv-legacy-data.h */