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/* `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 */
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