X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fvariable.c;h=fc81c01e1499dd443795271c7ff13a40fdac9891;hb=f43378497b8400e9c22a3485c534693dc1bc9554;hp=78f0cb443acf2387e5cad42fa07444b71212c2ee;hpb=a19b858e0ac3c69e4a28c0ca6d8674427268a863;p=pspp

diff --git a/src/data/variable.c b/src/data/variable.c
index 78f0cb443a..fc81c01e14 100644
--- a/src/data/variable.c
+++ b/src/data/variable.c
@@ -19,6 +19,7 @@
 
 #include <config.h>
 #include "variable.h"
+#include <libpspp/assertion.h>
 #include <libpspp/message.h>
 #include <stdlib.h>
 #include <libpspp/alloc.h>
@@ -131,26 +132,33 @@ hash_value(const union value  *v, int width)
 bool
 var_is_valid_name (const char *name, bool issue_error) 
 {
+  bool plausible;
   size_t length, i;
   
   assert (name != NULL);
 
+  /* Note that strlen returns number of BYTES, not the number of 
+     CHARACTERS */
   length = strlen (name);
-  if (length < 1) 
-    {
-      if (issue_error)
-        msg (SE, _("Variable name cannot be empty string."));
-      return false;
-    }
-  else if (length > LONG_NAME_LEN) 
+
+  plausible = var_is_plausible_name(name, issue_error);
+
+  if ( ! plausible ) 
+    return false;
+
+
+  if (!lex_is_id1 (name[0]))
     {
       if (issue_error)
-        msg (SE, _("Variable name %s exceeds %d-character limit."),
-             name, (int) LONG_NAME_LEN);
+        msg (SE, _("Character `%c' (in %s), may not appear "
+                   "as the first character in a variable name."),
+             name[0], name);
       return false;
     }
 
+
   for (i = 0; i < length; i++)
+    {
     if (!lex_is_idn (name[i])) 
       {
         if (issue_error)
@@ -159,13 +167,38 @@ var_is_valid_name (const char *name, bool issue_error)
                name[i], name);
         return false;
       }
-        
-  if (!lex_is_id1 (name[0]))
+    }
+
+  return true;
+}
+
+/* 
+   Returns true if NAME is an plausible name for a variable,
+   false otherwise.  If ISSUE_ERROR is true, issues an
+   explanatory error message on failure. 
+   This function makes no use of LC_CTYPE.
+*/
+bool
+var_is_plausible_name (const char *name, bool issue_error) 
+{
+  size_t length;
+  
+  assert (name != NULL);
+
+  /* Note that strlen returns number of BYTES, not the number of 
+     CHARACTERS */
+  length = strlen (name);
+  if (length < 1) 
     {
       if (issue_error)
-        msg (SE, _("Character `%c' (in %s), may not appear "
-                   "as the first character in a variable name."),
-             name[0], name);
+        msg (SE, _("Variable name cannot be empty string."));
+      return false;
+    }
+  else if (length > LONG_NAME_LEN) 
+    {
+      if (issue_error)
+        msg (SE, _("Variable name %s exceeds %d-character limit."),
+             name, (int) LONG_NAME_LEN);
       return false;
     }
 
@@ -183,7 +216,7 @@ var_is_valid_name (const char *name, bool issue_error)
 /* A hsh_compare_func that orders variables A and B by their
    names. */
 int
-compare_var_names (const void *a_, const void *b_, void *foo UNUSED) 
+compare_var_names (const void *a_, const void *b_, const void *aux UNUSED) 
 {
   const struct variable *a = a_;
   const struct variable *b = b_;
@@ -193,7 +226,7 @@ compare_var_names (const void *a_, const void *b_, void *foo UNUSED)
 
 /* A hsh_hash_func that hashes variable V based on its name. */
 unsigned
-hash_var_name (const void *v_, void *foo UNUSED) 
+hash_var_name (const void *v_, const void *aux UNUSED) 
 {
   const struct variable *v = v_;
 
@@ -203,7 +236,7 @@ hash_var_name (const void *v_, void *foo UNUSED)
 /* A hsh_compare_func that orders pointers to variables A and B
    by their names. */
 int
-compare_var_ptr_names (const void *a_, const void *b_, void *foo UNUSED) 
+compare_var_ptr_names (const void *a_, const void *b_, const void *aux UNUSED) 
 {
   struct variable *const *a = a_;
   struct variable *const *b = b_;
@@ -214,7 +247,7 @@ compare_var_ptr_names (const void *a_, const void *b_, void *foo UNUSED)
 /* A hsh_hash_func that hashes pointer to variable V based on its
    name. */
 unsigned
-hash_var_ptr_name (const void *v_, void *foo UNUSED) 
+hash_var_ptr_name (const void *v_, const void *aux UNUSED) 
 {
   struct variable *const *v = v_;
 
@@ -228,7 +261,7 @@ void
 var_set_short_name (struct variable *v, const char *short_name) 
 {
   assert (v != NULL);
-  assert (short_name[0] == '\0' || var_is_valid_name (short_name, false));
+  assert (short_name[0] == '\0' || var_is_plausible_name (short_name, false));
   
   str_copy_trunc (v->short_name, sizeof v->short_name, short_name);
   str_uppercase (v->short_name);
@@ -314,7 +347,28 @@ dict_class_to_name (enum dict_class dict_class)
     case DC_SCRATCH:
       return _("scratch");
     default:
-      assert (0);
-      abort ();
+      NOT_REACHED ();
     }
 }
+
+/* Return the number of bytes used when writing case_data for a variable 
+   of WIDTH */
+int
+width_to_bytes(int width)
+{
+  assert (width >= 0);
+
+  if ( width == 0 ) 
+    return MAX_SHORT_STRING ;
+  else if (width <= MAX_LONG_STRING) 
+    return ROUND_UP (width, MAX_SHORT_STRING);
+  else 
+    {
+      int chunks = width / EFFECTIVE_LONG_STRING_LENGTH ;
+      int remainder = width % EFFECTIVE_LONG_STRING_LENGTH ;
+      int bytes = remainder + (chunks * (MAX_LONG_STRING + 1) );
+      return ROUND_UP (bytes, MAX_SHORT_STRING); 
+    }
+}
+
+