X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fcasereader.h;h=8f80c30ca0799033499b0f71a9716065fb9f0908;hb=81579d9e9f994fb2908f50af41c3eb033d216e58;hp=d4a1cce5188a7a467569cbceb95ec9f30a1db402;hpb=0553d00dca10c2d2beeffd88fd12120e43a01025;p=pspp-builds.git

diff --git a/src/data/casereader.h b/src/data/casereader.h
index d4a1cce5..8f80c30c 100644
--- a/src/data/casereader.h
+++ b/src/data/casereader.h
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009, 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
@@ -51,15 +51,16 @@
 #ifndef DATA_CASEREADER_H
 #define DATA_CASEREADER_H 1
 
-#include <libpspp/compiler.h>
-#include <data/case.h>
-#include <data/missing-values.h>
+#include "libpspp/compiler.h"
+#include "data/case.h"
+#include "data/missing-values.h"
 
 struct dictionary;
 struct casereader;
 struct casewriter;
+struct subcase;
 
-bool casereader_read (struct casereader *, struct ccase *);
+struct ccase *casereader_read (struct casereader *);
 bool casereader_destroy (struct casereader *);
 
 struct casereader *casereader_clone (const struct casereader *);
@@ -68,19 +69,23 @@ void casereader_split (struct casereader *,
 struct casereader *casereader_rename (struct casereader *);
 void casereader_swap (struct casereader *, struct casereader *);
 
-bool casereader_peek (struct casereader *, casenumber, struct ccase *)
-     WARN_UNUSED_RESULT;
+struct ccase *casereader_peek (struct casereader *, casenumber);
+bool casereader_is_empty (struct casereader *);
 
 bool casereader_error (const struct casereader *);
 void casereader_force_error (struct casereader *);
 const struct taint *casereader_get_taint (const struct casereader *);
 
 casenumber casereader_get_case_cnt (struct casereader *);
-casenumber casereader_count_cases (struct casereader *);
-size_t casereader_get_value_cnt (struct casereader *);
+casenumber casereader_count_cases (const struct casereader *);
+void casereader_truncate (struct casereader *, casenumber);
+const struct caseproto *casereader_get_proto (const struct casereader *);
 
+casenumber casereader_advance (struct casereader *, casenumber);
 void casereader_transfer (struct casereader *, struct casewriter *);
 
+struct casereader *casereader_create_empty (const struct caseproto *);
+
 struct casereader *
 casereader_create_filter_func (struct casereader *,
                                bool (*include) (const struct ccase *,
@@ -95,8 +100,9 @@ casereader_create_filter_weight (struct casereader *,
                                  struct casewriter *exclude);
 struct casereader *
 casereader_create_filter_missing (struct casereader *,
-                                  const struct variable **vars, size_t var_cnt,
+                                  const struct variable *const*vars, size_t var_cnt,
                                   enum mv_class,
+				  casenumber *n_missing,
                                   struct casewriter *exclude);
 
 struct casereader *
@@ -104,11 +110,61 @@ casereader_create_counter (struct casereader *, casenumber *counter,
                            casenumber initial_value);
 
 struct casereader *
-casereader_create_translator (struct casereader *, size_t output_value_cnt,
-                              void (*translate) (struct ccase *input,
-                                                 struct ccase *output,
-                                                 void *aux),
+casereader_create_translator (struct casereader *,
+                              const struct caseproto *output_proto,
+                              struct ccase *(*translate) (struct ccase *,
+                                                          void *aux),
                               bool (*destroy) (void *aux),
                               void *aux);
 
+struct casereader *
+casereader_translate_stateless (struct casereader *,
+                                const struct caseproto *output_proto,
+                                struct ccase *(*translate) (struct ccase *,
+                                                            casenumber idx,
+                                                            const void *aux),
+                                bool (*destroy) (void *aux),
+                                void *aux);
+
+struct casereader *casereader_project (struct casereader *,
+                                       const struct subcase *);
+struct casereader *casereader_project_1 (struct casereader *, int column);
+struct casereader *casereader_select (struct casereader *,
+                                      casenumber first, casenumber last,
+                                      casenumber by);
+
+/* A function which creates a numberic value from an existing case */
+typedef double new_value_func (const struct ccase *, casenumber, void *);
+
+struct casereader *
+casereader_create_append_numeric (struct casereader *subreader,
+				  new_value_func func, void *aux,
+				  void (*destroy) (void *aux));
+
+struct casereader *
+casereader_create_arithmetic_sequence (struct casereader *,
+                                       double first, double increment);
+
+enum rank_error
+  {
+    RANK_ERR_NONE = 0,
+    RANK_ERR_NEGATIVE_WEIGHT = 0x01,
+    RANK_ERR_UNSORTED = 0x02
+  };
+
+
+typedef void distinct_func (double v, casenumber n, double w, void *aux);
+
+struct casereader *
+casereader_create_append_rank (struct casereader *,
+			       const struct variable *v, const struct variable *w,
+			       enum rank_error *err,
+			       distinct_func *distinct_callback, void *aux);
+
+struct casereader *
+casereader_create_distinct (struct casereader *input,
+			    const struct variable *key,
+			    const struct variable *weight);
+
+
 #endif /* data/casereader.h */