From: Ari Johnson <ari@cobramush.org>
Date: Fri, 2 Mar 2007 02:36:58 +0000 (+0000)
Subject: ordinal()
X-Git-Tag: 0.73~100
X-Git-Url: https://git.theari.com/?a=commitdiff_plain;h=ba1bbc6118edda52f709bf6813f6fc4af6700cb8;p=cobramush.git

ordinal()
---

diff --git a/game/txt/hlp/cobra_func.hlp b/game/txt/hlp/cobra_func.hlp
index a759074..af86e61 100644
--- a/game/txt/hlp/cobra_func.hlp
+++ b/game/txt/hlp/cobra_func.hlp
@@ -3413,6 +3413,17 @@ for an object named "Test", preferring a thing over other types.
   spellnum(<number>)
 
   Given a number, return its written-out representation in words.
+
+  See also: ordinal()
+& ORDINAL()
+  ordinal(<integer>)
+
+  Given an integer, return its written-out ordinal representation in words.
+
+  > think ordinal(1)
+  first
+
+  See also: spellnum()
 & SPLICE()
   splice(<list1>, <list2>, <word>[, <delimiter>])
   
diff --git a/src/funmath.c b/src/funmath.c
index 6b5cda0..a37167e 100644
--- a/src/funmath.c
+++ b/src/funmath.c
@@ -31,8 +31,8 @@
 #define EPSILON 0.000000001  /**< limit of precision for float equality */
 #define EQ(x,y) (fabs(x-y) < EPSILON)  /**< floating point equality macro */
 
-static void do_spellnum(char *num, unsigned int len, char **buff,
-                        char ***bp);
+static void do_spellnum(char *num, unsigned int len, char **buff, char ***bp);
+static void do_ordinalize(char **buff, char ***bp);
 static int nval_sort(const void *, const void *);
 static NVAL find_median(NVAL *, int);
 
@@ -1425,6 +1425,40 @@ do_spellnum(char *num, unsigned int len, char **buff, char ***bp)
   }
 }                               /* do_spellnum */
 
+/** Convert the end of a spelled number string to ordinal form. */
+static void
+do_ordinalize(char **buff, char ***bp)
+{
+  char *p;
+  int i, len;
+  static const char *singles[] = { "one", "two", "three", "four",
+    "five", "six", "seven", "eight", "nine"
+  };
+  static const char *singleths[] = { "first", "second", "third", "fourth",
+    "fifth", "sixth", "seventh", "eighth", "ninth"
+  };
+  /* Examine the end of the string */
+  for (i = 0; i < 9; i++) {
+    len = strlen(singles[i]);
+    p = **bp - len;
+    if ((p >= *buff) && !strncasecmp(p, singles[i], len)) {
+      **bp = p;
+      safe_str(singleths[i], *buff, *bp);
+      return;		/* done */
+    }
+  }
+  /* The string didn't end with a single. How about a y? */
+  p = **bp - 1;
+  if ((p >= *buff) && (*p == 'y')) {
+    **bp = p;
+    safe_str("ieth", *buff, *bp);
+    return;
+  }
+  /* Ok, tack on th */
+  safe_str("th", *buff, *bp);
+}
+
+
 /** adds zeros to the beginning of the string, untill its length is 
  * a multiple of 3.
  */
@@ -1452,7 +1486,9 @@ FUNCTION(fun_spellnum)
   *pnumber = args[0], *pnum1, *pnum2 = NULL;    /* part 1 and 2 of the number respectively */
   unsigned int len, m, minus = 0,       /* is the number negative? */
       dot = 0, len1, len2;      /* length of part 1 and 2 respectively */
+  int ordinal_mode;
 
+  ordinal_mode = (strcmp(called_as, "ORDINAL") == 0);
   pnumber = trim_space_sep(args[0], ' ');
 
   /* Is the number negative? */
@@ -1476,6 +1512,11 @@ FUNCTION(fun_spellnum)
   for (m = 0; m < len; m++) {
 
     if (*pnumber == '.') {
+      if (ordinal_mode) {
+	/* Only integers may be ordinalized */
+	safe_str(T(e_int), buff, bp);
+	return;
+      }
       if (dot) {
         safe_str(T(e_num), buff, bp);
         return;
@@ -1513,6 +1554,12 @@ FUNCTION(fun_spellnum)
     do_spellnum(pnum1, len1, &buff, &bp);
   }
 
+  if (ordinal_mode) {
+    /* In this case, we're done right here. */
+    do_ordinalize(&buff, &bp);
+    return;
+  }
+
   if (len2 > 0) {
     /* after the . */