/* PSPP - a program for statistical analysis.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2007, 2009-2013 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
struct dictionary;
+/* ASCII magic numbers. */
+#define ASCII_MAGIC "$FL2" /* For regular files. */
+#define ASCII_ZMAGIC "$FL3" /* For ZLIB compressed files. */
+
+/* EBCDIC magic number, the same as ASCII_MAGIC but encoded in EBCDIC.
+
+ No EBCDIC ZLIB compressed files have been observed, so we do not define
+ EBCDIC_ZMAGIC even though the value is obvious. */
+#define EBCDIC_MAGIC "\x5b\xc6\xd3\xf2"
+
+/* Amount of data that ZLIB compressed data blocks typically decompress to. */
+#define ZBLOCK_SIZE 0x3ff000
+
/* A variable in a system file. */
struct sfm_var
{
- int width; /* Value width (0=numeric, else string). */
+ int var_width; /* Variable width (0 to 32767). */
+ int segment_width; /* Segment width (0 to 255). */
int case_index; /* Index into case. */
/* The following members are interesting only for string
int sfm_segment_effective_offset (int width, int segment);
int sfm_segment_alloc_width (int width, int segment);
+/* A mapping between an encoding name and a Windows codepage. */
+struct sys_encoding
+ {
+ int number;
+ const char *name;
+ };
+
+extern struct sys_encoding sys_codepage_number_to_name[];
+extern struct sys_encoding sys_codepage_name_to_number[];
+
+int sys_get_codepage_from_encoding (const char *);
+const char *sys_get_encoding_from_codepage (int);
+
#endif /* data/sys-file-private.h */