Adding upstream version 9.1.upstream/9.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 281 insertions, 0 deletions

diff --git a/lib/unistr/u8-mbtoucr.c b/lib/unistr/u8-mbtoucr.c
new file mode 100644
index 0000000..6672298
--- /dev/null
+++ b/lib/unistr/u8-mbtoucr.c
@@ -0,0 +1,142 @@
+/* Look at first character in UTF-8 string, returning an error code.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2001.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+int
+u8_mbtoucr (ucs4_t *puc, const uint8_t *s, size_t n)
+{
+  uint8_t c = *s;
+
+  if (c < 0x80)
+    {
+      *puc = c;
+      return 1;
+    }
+  else if (c >= 0xc2)
+    {
+      if (c < 0xe0)
+        {
+          if (n >= 2)
+            {
+              if ((s[1] ^ 0x80) < 0x40)
+                {
+                  *puc = ((unsigned int) (c & 0x1f) << 6)
+                         | (unsigned int) (s[1] ^ 0x80);
+                  return 2;
+                }
+              /* invalid multibyte character */
+            }
+          else
+            {
+              /* incomplete multibyte character */
+              *puc = 0xfffd;
+              return -2;
+            }
+        }
+      else if (c < 0xf0)
+        {
+          if (n >= 2)
+            {
+              if ((s[1] ^ 0x80) < 0x40
+                  && (c >= 0xe1 || s[1] >= 0xa0)
+                  && (c != 0xed || s[1] < 0xa0))
+                {
+                  if (n >= 3)
+                    {
+                      if ((s[2] ^ 0x80) < 0x40)
+                        {
+                          *puc = ((unsigned int) (c & 0x0f) << 12)
+                                 | ((unsigned int) (s[1] ^ 0x80) << 6)
+                                 | (unsigned int) (s[2] ^ 0x80);
+                          return 3;
+                        }
+                      /* invalid multibyte character */
+                    }
+                  else
+                    {
+                      /* incomplete multibyte character */
+                      *puc = 0xfffd;
+                      return -2;
+                    }
+                }
+              /* invalid multibyte character */
+            }
+          else
+            {
+              /* incomplete multibyte character */
+              *puc = 0xfffd;
+              return -2;
+            }
+        }
+      else if (c < 0xf8)
+        {
+          if (n >= 2)
+            {
+              if ((s[1] ^ 0x80) < 0x40
+                  && (c >= 0xf1 || s[1] >= 0x90)
+                  && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)))
+                {
+                  if (n >= 3)
+                    {
+                      if ((s[2] ^ 0x80) < 0x40)
+                        {
+                          if (n >= 4)
+                            {
+                              if ((s[3] ^ 0x80) < 0x40)
+                                {
+                                  *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 */
+                            }
+                          else
+                            {
+                              /* incomplete multibyte character */
+                              *puc = 0xfffd;
+                              return -2;
+                            }
+                        }
+                      /* invalid multibyte character */
+                    }
+                  else
+                    {
+                      /* incomplete multibyte character */
+                      *puc = 0xfffd;
+                      return -2;
+                    }
+                }
+              /* invalid multibyte character */
+            }
+          else
+            {
+              /* incomplete multibyte character */
+              *puc = 0xfffd;
+              return -2;
+            }
+        }
+    }
+  /* invalid multibyte character */
+  *puc = 0xfffd;
+  return -1;
+}
diff --git a/lib/unistr/u8-uctomb-aux.c b/lib/unistr/u8-uctomb-aux.c
new file mode 100644
index 0000000..5ca2191
--- /dev/null
+++ b/lib/unistr/u8-uctomb-aux.c
@@ -0,0 +1,60 @@
+/* Conversion UCS-4 to UTF-8.
+   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unistr.h"
+
+#include "attribute.h"
+
+int
+u8_uctomb_aux (uint8_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  int count;
+
+  if (uc < 0x80)
+    /* The case n >= 1 is already handled by the caller.  */
+    return -2;
+  else if (uc < 0x800)
+    count = 2;
+  else if (uc < 0x10000)
+    {
+      if (uc < 0xd800 || uc >= 0xe000)
+        count = 3;
+      else
+        return -1;
+    }
+  else if (uc < 0x110000)
+    count = 4;
+  else
+    return -1;
+
+  if (n < count)
+    return -2;
+
+  switch (count) /* note: code falls through cases! */
+    {
+    case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
+      FALLTHROUGH;
+    case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
+      FALLTHROUGH;
+    case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;
+  /*case 1:*/ s[0] = uc;
+    }
+  return count;
+}
diff --git a/lib/unistr/u8-uctomb.c b/lib/unistr/u8-uctomb.c
new file mode 100644
index 0000000..2259b1d
--- /dev/null
+++ b/lib/unistr/u8-uctomb.c
@@ -0,0 +1,79 @@
+/* Store a character in UTF-8 string.
+   Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#if defined IN_LIBUNISTRING
+/* Tell unistr.h to declare u8_uctomb as 'extern', not 'static inline'.  */
+# include "unistring-notinline.h"
+#endif
+
+/* Specification.  */
+#include "unistr.h"
+
+#include "attribute.h"
+
+#if !HAVE_INLINE
+
+int
+u8_uctomb (uint8_t *s, ucs4_t uc, ptrdiff_t n)
+{
+  if (uc < 0x80)
+    {
+      if (n > 0)
+        {
+          s[0] = uc;
+          return 1;
+        }
+      /* else return -2, below.  */
+    }
+  else
+    {
+      int count;
+
+      if (uc < 0x800)
+        count = 2;
+      else if (uc < 0x10000)
+        {
+          if (uc < 0xd800 || uc >= 0xe000)
+            count = 3;
+          else
+            return -1;
+        }
+      else if (uc < 0x110000)
+        count = 4;
+      else
+        return -1;
+
+      if (n >= count)
+        {
+          switch (count) /* note: code falls through cases! */
+            {
+            case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000;
+              FALLTHROUGH;
+            case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800;
+              FALLTHROUGH;
+            case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0;
+          /*case 1:*/ s[0] = uc;
+            }
+          return count;
+        }
+    }
+  return -2;
+}
+
+#endif