Rewrite documentation for the RECODE command.

[pspp-builds.git] / src / data / format.c

diff --git a/src/data/format.c b/src/data/format.c
index d3c688022a6d2bace72f3c2604630a03020e3013..3c407f4a85f3c0bb842e41a3cca37098b1a5850a 100644 (file)
--- a/src/data/format.c
+++ b/src/data/format.c
@@ -20,6 +20,7 @@
 
 #include <ctype.h>
 #include <stdlib.h>
+#include <uniwidth.h>
 
 #include "data/identifier.h"
 #include "data/settings.h"
@@ -113,7 +114,7 @@ fmt_settings_get_style (const struct fmt_settings *settings,
 
 /* Sets the number style for TYPE to have the given DECIMAL and GROUPING
    characters, negative prefix NEG_PREFIX, prefix PREFIX, suffix SUFFIX, and
-   negative suffix NEG_SUFFIX. */
+   negative suffix NEG_SUFFIX.  All of the strings are UTF-8 encoded. */
 void
 fmt_settings_set_style (struct fmt_settings *settings, enum fmt_type type,
                         char decimal, char grouping,
@@ -121,6 +122,7 @@ fmt_settings_set_style (struct fmt_settings *settings, enum fmt_type type,
                         const char *suffix, const char *neg_suffix)
 {
   struct fmt_number_style *style = &settings->styles[type];
+  int total_bytes, total_width;
 
   assert (grouping == '.' || grouping == ',' || grouping == 0);
   assert (decimal == '.' || decimal == ',');
@@ -134,6 +136,12 @@ fmt_settings_set_style (struct fmt_settings *settings, enum fmt_type type,
   fmt_affix_set (&style->neg_suffix, neg_suffix);
   style->decimal = decimal;
   style->grouping = grouping;
+
+  total_bytes = (strlen (neg_prefix) + strlen (prefix)
+                 + strlen (suffix) + strlen (neg_suffix));
+  total_width = (style->neg_prefix.width + style->prefix.width
+                 + style->suffix.width + style->neg_suffix.width);
+  style->extra_bytes = MAX (0, total_bytes - total_width);
 }
 
 /* Sets the decimal point character for the settings in S to DECIMAL.
@@ -492,6 +500,7 @@ fmt_resize (struct fmt_spec *fmt, int width)
 void
 fmt_fix (struct fmt_spec *fmt, bool for_input)
 {
+  unsigned int step;
   int min_w, max_w;
   int max_d;
 
@@ -503,18 +512,19 @@ fmt_fix (struct fmt_spec *fmt, bool for_input)
   else if (fmt->w > max_w)
     fmt->w = max_w;
 
-  /* First, if FMT has more decimal places than allowed, attempt
-     to increase FMT's width until that number of decimal places
-     can be achieved. */
-  if (fmt->d > fmt_max_decimals (fmt->type, fmt->w, for_input))
+  /* Round width to step. */
+  step = fmt_step_width (fmt->type);
+  fmt->w = ROUND_DOWN (fmt->w, step);
+
+  /* If FMT has more decimal places than allowed, attempt to increase FMT's
+     width until that number of decimal places can be achieved. */
+  if (fmt->d > fmt_max_decimals (fmt->type, fmt->w, for_input)
+      && fmt_takes_decimals (fmt->type))
     {
-      int w;
-      for (w = fmt->w; w <= max_w; w++)
-        if (fmt_max_decimals (fmt->type, w, for_input) >= fmt->d)
-          {
-            fmt->w = w;
-            break;
-          }
+      int max_w = fmt_max_width (fmt->type, for_input);
+      for (; fmt->w < max_w; fmt->w++)
+        if (fmt->d <= fmt_max_decimals (fmt->type, fmt->w, for_input))
+          break;
     }
 
   /* Clamp decimals to those allowed by format and width. */
@@ -904,6 +914,56 @@ fmt_date_template (enum fmt_type type)
     }
 }
 
+/* Returns a string representing the format TYPE for use in a GUI dialog. */
+const char *
+fmt_gui_name (enum fmt_type type)
+{
+  switch (type)
+    {
+    case FMT_F:
+      return _("Numeric");
+
+    case FMT_COMMA:
+      return _("Comma");
+
+    case FMT_DOT:
+      return _("Dot");
+
+    case FMT_E:
+      return _("Scientific");
+
+    case FMT_DATE:
+    case FMT_EDATE:
+    case FMT_SDATE:
+    case FMT_ADATE:
+    case FMT_JDATE:
+    case FMT_QYR:
+    case FMT_MOYR:
+    case FMT_WKYR:
+    case FMT_DATETIME:
+    case FMT_TIME:
+    case FMT_DTIME:
+    case FMT_WKDAY:
+    case FMT_MONTH:
+      return _("Date");
+
+    case FMT_DOLLAR:
+      return _("Dollar");
+
+    case FMT_CCA:
+    case FMT_CCB:
+    case FMT_CCC:
+    case FMT_CCD:
+    case FMT_CCE:
+      return _("Custom");
+
+    case FMT_A:
+      return _("String");
+
+    default:
+      return fmt_name (type);
+    }
+}
 \f
 /* Returns true if TYPE is a valid format type,
    false otherwise. */
@@ -934,11 +994,12 @@ max_digits_for_bytes (int bytes)
   return map[bytes - 1];
 }
 \f
-/* Sets AFFIX's string value to S. */
+/* Sets AFFIX's string value to S, a UTF-8 encoded string. */
 static void
 fmt_affix_set (struct fmt_affix *affix, const char *s)
 {
   affix->s = s[0] == '\0' ? CONST_CAST (char *, "") : xstrdup (s);
+  affix->width = u8_strwidth (CHAR_CAST (const uint8_t *, s), "UTF-8");
 }
 
 /* Frees data in AFFIX. */
@@ -970,6 +1031,7 @@ fmt_number_style_clone (struct fmt_number_style *new,
   fmt_affix_set (&new->neg_suffix, old->neg_suffix.s);
   new->decimal = old->decimal;
   new->grouping = old->grouping;
+  new->extra_bytes = old->extra_bytes;
 }
 
 /* Destroys a struct fmt_number_style. */
@@ -985,20 +1047,20 @@ fmt_number_style_destroy (struct fmt_number_style *style)
     }
 }
 
-/* Returns the total width of the standard prefix and suffix for
-   STYLE. */
+/* Returns the total width of the standard prefix and suffix for STYLE, in
+   display columns (e.g. as returned by u8_strwidth()). */
 int
 fmt_affix_width (const struct fmt_number_style *style)
 {
-  return strlen (style->prefix.s) + strlen (style->suffix.s);
+  return style->prefix.width + style->suffix.width;
 }
 
-/* Returns the total width of the negative prefix and suffix for
-   STYLE. */
+/* Returns the total width of the negative prefix and suffix for STYLE, in
+   display columns (e.g. as returned by u8_strwidth()). */
 int
 fmt_neg_affix_width (const struct fmt_number_style *style)
 {
-  return strlen (style->neg_prefix.s) + strlen (style->neg_suffix.s);
+  return style->neg_prefix.width + style->neg_suffix.width;
 }
 
 /* Returns the struct fmt_desc for the given format TYPE. */