From 553bb7165ab4ce49ea0411804613ba9950d83aac Mon Sep 17 00:00:00 2001
From: tomo <tomo>
Date: Thu, 7 Aug 2003 00:41:54 +0000
Subject: [PATCH] (chise_ft_get_value): Use escape forms for some special
 characters.

---
 chise.c |  111 +++++++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 86 insertions(+), 25 deletions(-)

diff --git a/chise.c b/chise.c
index c24fd8e..3397991 100644
--- a/chise.c
+++ b/chise.c
@@ -170,49 +170,110 @@ int chise_ft_get_value (CHISE_Feature_Table *db,
   unsigned char key_buf[8];
 
   key_buf[0] = '?';
-  if (cid <= 0x7f)
+  if (cid == '\t')
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = 't';
+      key_buf[3] = '\0';
+    }
+  else if (cid == '\n')
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = 'n';
+      key_buf[3] = '\0';
+    }
+  else if (cid == '\r')
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = 'r';
+      key_buf[3] = '\0';
+    }
+  else if (cid == 0x1C)
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = '^';
+      key_buf[3] = '\\';
+      key_buf[4] = '\\';
+      key_buf[5] = '\0';
+    }
+  else if (cid <= 0x1F)
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = '^';
+      key_buf[3] = '@' + cid;
+      key_buf[4] = '\0';
+    }
+  else if ( (cid == ' ') || (cid == '"') ||
+	    (cid == '#') || (cid == '\'') ||
+	    (cid == '(') || (cid == ')') ||
+	    (cid == ',') || (cid == '.') ||
+	    (cid == ';') || (cid == '?') ||
+	    (cid == '[') || (cid == '\\') ||
+	    (cid == ']') || (cid == '`') )
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = cid;
+      key_buf[3] = '\0';
+    }
+  else if (cid <= 0x7E)
     {
       key_buf[1] = cid;
       key_buf[2] = '\0';
     }
-  else if (cid <= 0x7ff)
+  else if (cid == 0x7F)
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = '^';
+      key_buf[3] = '?';
+      key_buf[4] = '\0';
+    }
+  else if (cid <= 0x9F)
+    {
+      key_buf[1] = '\\';
+      key_buf[2] = '^';
+      key_buf[3] = ((cid + '@') >> 6) | 0xC0;
+      key_buf[4] = ((cid + '@') & 0x3F) | 0x80;
+      key_buf[5] = '\0';
+
+    }
+  else if (cid <= 0x7FF)
     {
-      key_buf[1] = (cid >> 6) | 0xc0;
-      key_buf[2] = (cid & 0x3f) | 0x80;
+      key_buf[1] = (cid >> 6) | 0xC0;
+      key_buf[2] = (cid & 0x3F) | 0x80;
       key_buf[3] = '\0';
     }
-  else if (cid <= 0xffff)
+  else if (cid <= 0xFFFF)
     {
-      key_buf[1] = (cid >> 12) | 0xe0;
-      key_buf[2]= ((cid >>  6) & 0x3f) | 0x80;
-      key_buf[3]=  (cid        & 0x3f) | 0x80;
+      key_buf[1] = (cid >> 12) | 0xE0;
+      key_buf[2]= ((cid >>  6) & 0x3F) | 0x80;
+      key_buf[3]=  (cid        & 0x3F) | 0x80;
       key_buf[4] = '\0';
     }
-  else if (cid <= 0x1fffff)
+  else if (cid <= 0x1FFFFF)
     {
-      key_buf[1]=  (cid >> 18) | 0xf0;
-      key_buf[2]= ((cid >> 12) & 0x3f) | 0x80;
-      key_buf[3]= ((cid >>  6) & 0x3f) | 0x80;
-      key_buf[4]=  (cid        & 0x3f) | 0x80;
+      key_buf[1]=  (cid >> 18) | 0xF0;
+      key_buf[2]= ((cid >> 12) & 0x3F) | 0x80;
+      key_buf[3]= ((cid >>  6) & 0x3F) | 0x80;
+      key_buf[4]=  (cid        & 0x3F) | 0x80;
       key_buf[5] = '\0';
     }
-  else if (cid <= 0x3ffffff)
+  else if (cid <= 0x3FFFFFF)
     {
-      key_buf[1]=  (cid >> 24) | 0xf8;
-      key_buf[2]= ((cid >> 18) & 0x3f) | 0x80;
-      key_buf[3]= ((cid >> 12) & 0x3f) | 0x80;
-      key_buf[4]= ((cid >>  6) & 0x3f) | 0x80;
-      key_buf[5]=  (cid        & 0x3f) | 0x80;
+      key_buf[1]=  (cid >> 24) | 0xF8;
+      key_buf[2]= ((cid >> 18) & 0x3F) | 0x80;
+      key_buf[3]= ((cid >> 12) & 0x3F) | 0x80;
+      key_buf[4]= ((cid >>  6) & 0x3F) | 0x80;
+      key_buf[5]=  (cid        & 0x3F) | 0x80;
       key_buf[6] = '\0';
     }
   else
     {
-      key_buf[1]=  (cid >> 30) | 0xfc;
-      key_buf[2]= ((cid >> 24) & 0x3f) | 0x80;
-      key_buf[3]= ((cid >> 18) & 0x3f) | 0x80;
-      key_buf[4]= ((cid >> 12) & 0x3f) | 0x80;
-      key_buf[5]= ((cid >>  6) & 0x3f) | 0x80;
-      key_buf[6]=  (cid        & 0x3f) | 0x80;
+      key_buf[1]=  (cid >> 30) | 0xFC;
+      key_buf[2]= ((cid >> 24) & 0x3F) | 0x80;
+      key_buf[3]= ((cid >> 18) & 0x3F) | 0x80;
+      key_buf[4]= ((cid >> 12) & 0x3F) | 0x80;
+      key_buf[5]= ((cid >>  6) & 0x3F) | 0x80;
+      key_buf[6]=  (cid        & 0x3F) | 0x80;
       key_buf[7] = '\0';
     }
   return
-- 
1.7.10.4