Adding upstream version 5.0.upstream/5.0upstream

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

1 files changed, 294 insertions, 0 deletions

diff --git a/lib/readline/colors.c b/lib/readline/colors.c
new file mode 100644
index 0000000..53758e0
--- /dev/null
+++ b/lib/readline/colors.c
@@ -0,0 +1,294 @@
+/* `dir', `vdir' and `ls' directory listing programs for GNU.
+
+   Modified by Chet Ramey for Readline.
+
+   Copyright (C) 1985, 1988, 1990-1991, 1995-2010, 2012, 2015, 2017
+   Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Richard Stallman and David MacKenzie.  */
+
+/* Color support by Peter Anvin <Peter.Anvin@linux.org> and Dennis
+   Flaherty <dennisf@denix.elk.miles.com> based on original patches by
+   Greg Lee <lee@uhunix.uhcc.hawaii.edu>.  */
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+#  include <config.h>
+#endif
+
+#include "rlconf.h"
+
+#include <stdio.h>
+
+#include "posixstat.h" // stat related macros (S_ISREG, ...)
+#include <fcntl.h> // S_ISUID
+
+#ifndef S_ISDIR
+#  define	S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)
+#endif
+
+// strlen()
+#if defined (HAVE_STRING_H)
+#  include <string.h>
+#else /* !HAVE_STRING_H */
+#  include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+// abort()
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "readline.h"
+#include "rldefs.h"
+
+#ifdef COLOR_SUPPORT
+
+#include "xmalloc.h"
+#include "colors.h"
+
+static bool is_colored (enum indicator_no type);
+static void restore_default_color (void);
+
+COLOR_EXT_TYPE *_rl_color_ext_list = 0;
+
+/* Output a color indicator (which may contain nulls).  */
+void
+_rl_put_indicator (const struct bin_str *ind)
+{
+  fwrite (ind->string, ind->len, 1, rl_outstream);
+}
+
+static bool
+is_colored (enum indicator_no colored_filetype)
+{
+  size_t len = _rl_color_indicator[colored_filetype].len;
+  char const *s = _rl_color_indicator[colored_filetype].string;
+  return ! (len == 0
+            || (len == 1 && strncmp (s, "0", 1) == 0)
+            || (len == 2 && strncmp (s, "00", 2) == 0));
+}
+
+static void
+restore_default_color (void)
+{
+  _rl_put_indicator (&_rl_color_indicator[C_LEFT]);
+  _rl_put_indicator (&_rl_color_indicator[C_RIGHT]);
+}
+
+void
+_rl_set_normal_color (void)
+{
+  if (is_colored (C_NORM))
+    {
+      _rl_put_indicator (&_rl_color_indicator[C_LEFT]);
+      _rl_put_indicator (&_rl_color_indicator[C_NORM]);
+      _rl_put_indicator (&_rl_color_indicator[C_RIGHT]);
+    }
+}
+
+bool
+_rl_print_prefix_color (void)
+{
+  struct bin_str *s;
+
+  /* What do we want to use for the prefix? Let's try cyan first, see colors.h */
+  s = &_rl_color_indicator[C_PREFIX];
+  if (s->string != NULL)
+    {
+      if (is_colored (C_NORM))
+	restore_default_color ();
+      _rl_put_indicator (&_rl_color_indicator[C_LEFT]);
+      _rl_put_indicator (s);
+      _rl_put_indicator (&_rl_color_indicator[C_RIGHT]);
+      return 0;
+    }
+  else
+    return 1;
+}
+  
+/* Returns whether any color sequence was printed. */
+bool
+_rl_print_color_indicator (const char *f)
+{
+  enum indicator_no colored_filetype;
+  COLOR_EXT_TYPE *ext;	/* Color extension */
+  size_t len;		/* Length of name */
+
+  const char* name;
+  char *filename;
+  struct stat astat, linkstat;
+  mode_t mode;
+  int linkok;	/* 1 == ok, 0 == dangling symlink, -1 == missing */
+  int stat_ok;
+
+  name = f;
+
+  /* This should already have undergone tilde expansion */
+  filename = 0;
+  if (rl_filename_stat_hook)
+    {
+      filename = savestring (f);
+      (*rl_filename_stat_hook) (&filename);
+      name = filename;
+    }
+
+#if defined (HAVE_LSTAT)
+  stat_ok = lstat(name, &astat);
+#else
+  stat_ok = stat(name, &astat);
+#endif
+  if (stat_ok == 0)
+    {
+      mode = astat.st_mode;
+#if defined (HAVE_LSTAT)
+      if (S_ISLNK (mode))
+	{
+	  linkok = stat (name, &linkstat) == 0;
+	  if (linkok && strncmp (_rl_color_indicator[C_LINK].string, "target", 6) == 0)
+	    mode = linkstat.st_mode;
+	}
+      else
+#endif
+	linkok = 1;
+    }
+  else
+    linkok = -1;
+
+  /* Is this a nonexistent file?  If so, linkok == -1.  */
+
+  if (linkok == -1 && _rl_color_indicator[C_MISSING].string != NULL)
+    colored_filetype = C_MISSING;
+  else if (linkok == 0 && S_ISLNK(mode) && _rl_color_indicator[C_ORPHAN].string != NULL)
+    colored_filetype = C_ORPHAN;	/* dangling symlink */
+  else if(stat_ok != 0)
+    {
+      static enum indicator_no filetype_indicator[] = FILETYPE_INDICATORS;
+      colored_filetype = filetype_indicator[normal]; //f->filetype];
+    }
+  else
+    {
+      if (S_ISREG (mode))
+        {
+          colored_filetype = C_FILE;
+
+#if defined (S_ISUID)
+          if ((mode & S_ISUID) != 0 && is_colored (C_SETUID))
+            colored_filetype = C_SETUID;
+          else
+#endif
+#if defined (S_ISGID)
+          if ((mode & S_ISGID) != 0 && is_colored (C_SETGID))
+            colored_filetype = C_SETGID;
+          else
+#endif
+          if (is_colored (C_CAP) && 0) //f->has_capability)
+            colored_filetype = C_CAP;
+          else if ((mode & S_IXUGO) != 0 && is_colored (C_EXEC))
+            colored_filetype = C_EXEC;
+          else if ((1 < astat.st_nlink) && is_colored (C_MULTIHARDLINK))
+            colored_filetype = C_MULTIHARDLINK;
+        }
+      else if (S_ISDIR (mode))
+        {
+          colored_filetype = C_DIR;
+
+#if defined (S_ISVTX)
+          if ((mode & S_ISVTX) && (mode & S_IWOTH)
+              && is_colored (C_STICKY_OTHER_WRITABLE))
+            colored_filetype = C_STICKY_OTHER_WRITABLE;
+          else
+#endif
+          if ((mode & S_IWOTH) != 0 && is_colored (C_OTHER_WRITABLE))
+            colored_filetype = C_OTHER_WRITABLE;
+#if defined (S_ISVTX)
+          else if ((mode & S_ISVTX) != 0 && is_colored (C_STICKY))
+            colored_filetype = C_STICKY;
+#endif
+        }
+#if defined (S_ISLNK)
+      else if (S_ISLNK (mode))
+        colored_filetype = C_LINK;
+#endif
+      else if (S_ISFIFO (mode))
+        colored_filetype = C_FIFO;
+#if defined (S_ISSOCK)
+      else if (S_ISSOCK (mode))
+        colored_filetype = C_SOCK;
+#endif
+      else if (S_ISBLK (mode))
+        colored_filetype = C_BLK;
+      else if (S_ISCHR (mode))
+        colored_filetype = C_CHR;
+      else
+        {
+          /* Classify a file of some other type as C_ORPHAN.  */
+          colored_filetype = C_ORPHAN;
+        }
+    }
+
+  /* Check the file's suffix only if still classified as C_FILE.  */
+  ext = NULL;
+  if (colored_filetype == C_FILE)
+    {
+      /* Test if NAME has a recognized suffix.  */
+      len = strlen (name);
+      name += len;		/* Pointer to final \0.  */
+      for (ext = _rl_color_ext_list; ext != NULL; ext = ext->next)
+        {
+          if (ext->ext.len <= len
+              && strncmp (name - ext->ext.len, ext->ext.string,
+                          ext->ext.len) == 0)
+            break;
+        }
+    }
+
+  free (filename);	/* NULL or savestring return value */
+
+  {
+    const struct bin_str *const s
+      = ext ? &(ext->seq) : &_rl_color_indicator[colored_filetype];
+    if (s->string != NULL)
+      {
+        /* Need to reset so not dealing with attribute combinations */
+        if (is_colored (C_NORM))
+	  restore_default_color ();
+        _rl_put_indicator (&_rl_color_indicator[C_LEFT]);
+        _rl_put_indicator (s);
+        _rl_put_indicator (&_rl_color_indicator[C_RIGHT]);
+        return 0;
+      }
+    else
+      return 1;
+  }
+}
+
+void
+_rl_prep_non_filename_text (void)
+{
+  if (_rl_color_indicator[C_END].string != NULL)
+    _rl_put_indicator (&_rl_color_indicator[C_END]);
+  else
+    {
+      _rl_put_indicator (&_rl_color_indicator[C_LEFT]);
+      _rl_put_indicator (&_rl_color_indicator[C_RESET]);
+      _rl_put_indicator (&_rl_color_indicator[C_RIGHT]);
+    }
+}
+#endif /* COLOR_SUPPORT */