Imported Upstream version 0.9.6+really0.9.3upstream/0.9.6+really0.9.3

1 files changed, 42 insertions, 124 deletions

diff --git a/lib/unistr/u8-mbtouc.c b/lib/unistr/u8-mbtouc.c
index dc4607f6..96cd5b74 100644
--- a/lib/unistr/u8-mbtouc.c
+++ b/lib/unistr/u8-mbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2010 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify it
@@ -55,32 +55,21 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
             {
               /* incomplete multibyte character */
               *puc = 0xfffd;
-              return 1;
+              return n;
             }
         }
       else if (c < 0xf0)
         {
           if (n >= 3)
             {
-              if ((s[1] ^ 0x80) < 0x40)
+              if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+                  && (c >= 0xe1 || s[1] >= 0xa0)
+                  && (c != 0xed || s[1] < 0xa0))
                 {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((c >= 0xe1 || s[1] >= 0xa0)
-                          && (c != 0xed || s[1] < 0xa0))
-                        {
-                          *puc = ((unsigned int) (c & 0x0f) << 12)
-                                 | ((unsigned int) (s[1] ^ 0x80) << 6)
-                                 | (unsigned int) (s[2] ^ 0x80);
-                          return 3;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  *puc = 0xfffd;
-                  return 2;
+                  *puc = ((unsigned int) (c & 0x0f) << 12)
+                         | ((unsigned int) (s[1] ^ 0x80) << 6)
+                         | (unsigned int) (s[2] ^ 0x80);
+                  return 3;
                 }
               /* invalid multibyte character */
             }
@@ -88,45 +77,26 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
             {
               /* incomplete multibyte character */
               *puc = 0xfffd;
-              if (n == 1 || (s[1] ^ 0x80) >= 0x40)
-                return 1;
-              else
-                return 2;
+              return n;
             }
         }
       else if (c < 0xf8)
         {
           if (n >= 4)
             {
-              if ((s[1] ^ 0x80) < 0x40)
-                {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((c >= 0xf1 || s[1] >= 0x90)
+              if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+                  && (s[3] ^ 0x80) < 0x40
+                  && (c >= 0xf1 || s[1] >= 0x90)
 #if 1
-                              && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
+                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
 #endif
-                             )
-                            {
-                              *puc = ((unsigned int) (c & 0x07) << 18)
-                                     | ((unsigned int) (s[1] ^ 0x80) << 12)
-                                     | ((unsigned int) (s[2] ^ 0x80) << 6)
-                                     | (unsigned int) (s[3] ^ 0x80);
-                              return 4;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  *puc = 0xfffd;
-                  return 2;
+                 )
+                {
+                  *puc = ((unsigned int) (c & 0x07) << 18)
+                         | ((unsigned int) (s[1] ^ 0x80) << 12)
+                         | ((unsigned int) (s[2] ^ 0x80) << 6)
+                         | (unsigned int) (s[3] ^ 0x80);
+                  return 4;
                 }
               /* invalid multibyte character */
             }
@@ -134,12 +104,7 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
             {
               /* incomplete multibyte character */
               *puc = 0xfffd;
-              if (n == 1 || (s[1] ^ 0x80) >= 0x40)
-                return 1;
-              else if (n == 2 || (s[2] ^ 0x80) >= 0x40)
-                return 2;
-              else
-                return 3;
+              return n;
             }
         }
 #if 0
@@ -147,37 +112,16 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 5)
             {
-              if ((s[1] ^ 0x80) < 0x40)
+              if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+                  && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+                  && (c >= 0xf9 || s[1] >= 0x88))
                 {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if (c >= 0xf9 || s[1] >= 0x88)
-                                {
-                                  *puc = ((unsigned int) (c & 0x03) << 24)
-                                         | ((unsigned int) (s[1] ^ 0x80) << 18)
-                                         | ((unsigned int) (s[2] ^ 0x80) << 12)
-                                         | ((unsigned int) (s[3] ^ 0x80) << 6)
-                                         | (unsigned int) (s[4] ^ 0x80);
-                                  return 5;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
+                  *puc = ((unsigned int) (c & 0x03) << 24)
+                         | ((unsigned int) (s[1] ^ 0x80) << 18)
+                         | ((unsigned int) (s[2] ^ 0x80) << 12)
+                         | ((unsigned int) (s[3] ^ 0x80) << 6)
+                         | (unsigned int) (s[4] ^ 0x80);
+                  return 5;
                 }
               /* invalid multibyte character */
             }
@@ -192,44 +136,18 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
         {
           if (n >= 6)
             {
-              if ((s[1] ^ 0x80) < 0x40)
+              if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+                  && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+                  && (s[5] ^ 0x80) < 0x40
+                  && (c >= 0xfd || s[1] >= 0x84))
                 {
-                  if ((s[2] ^ 0x80) < 0x40)
-                    {
-                      if ((s[3] ^ 0x80) < 0x40)
-                        {
-                          if ((s[4] ^ 0x80) < 0x40)
-                            {
-                              if ((s[5] ^ 0x80) < 0x40)
-                                {
-                                  if (c >= 0xfd || s[1] >= 0x84)
-                                    {
-                                      *puc = ((unsigned int) (c & 0x01) << 30)
-                                             | ((unsigned int) (s[1] ^ 0x80) << 24)
-                                             | ((unsigned int) (s[2] ^ 0x80) << 18)
-                                             | ((unsigned int) (s[3] ^ 0x80) << 12)
-                                             | ((unsigned int) (s[4] ^ 0x80) << 6)
-                                             | (unsigned int) (s[5] ^ 0x80);
-                                      return 6;
-                                    }
-                                  /* invalid multibyte character */
-                                  *puc = 0xfffd;
-                                  return 6;
-                                }
-                              /* invalid multibyte character */
-                              *puc = 0xfffd;
-                              return 5;
-                            }
-                          /* invalid multibyte character */
-                          *puc = 0xfffd;
-                          return 4;
-                        }
-                      /* invalid multibyte character */
-                      *puc = 0xfffd;
-                      return 3;
-                    }
-                  /* invalid multibyte character */
-                  return 2;
+                  *puc = ((unsigned int) (c & 0x01) << 30)
+                         | ((unsigned int) (s[1] ^ 0x80) << 24)
+                         | ((unsigned int) (s[2] ^ 0x80) << 18)
+                         | ((unsigned int) (s[3] ^ 0x80) << 12)
+                         | ((unsigned int) (s[4] ^ 0x80) << 6)
+                         | (unsigned int) (s[5] ^ 0x80);
+                  return 6;
                 }
               /* invalid multibyte character */
             }