/*
* tw.color.c: builtin color ls-F
*/
/*-
* Copyright (c) 1998 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "sh.h"
#include "tw.h"
#include "ed.h"
#include "tc.h"
#ifdef COLOR_LS_F
typedef struct {
const char *s;
size_t len;
} Str;
#define VAR(suffix,variable,defaultcolor) \
{ \
suffix, variable, { defaultcolor, sizeof(defaultcolor) - 1 }, \
{ defaultcolor, sizeof(defaultcolor) - 1 } \
}
#define NOS '\0' /* no suffix */
typedef struct {
const char suffix;
const char *variable;
Str color;
Str defaultcolor;
} Variable;
static Variable variables[] = {
VAR('/', "di", "01;34"), /* Directory */
VAR('@', "ln", "01;36"), /* Symbolic link */
VAR('&', "or", ""), /* Orphanned symbolic link (defaults to ln) */
VAR('|', "pi", "33"), /* Named pipe (FIFO) */
VAR('=', "so", "01;35"), /* Socket */
VAR('>', "do", "01;35"), /* Door (solaris fast ipc mechanism) */
VAR('#', "bd", "01;33"), /* Block device */
VAR('%', "cd", "01;33"), /* Character device */
VAR('*', "ex", "01;32"), /* Executable file */
VAR(NOS, "fi", "0"), /* Regular file */
VAR(NOS, "no", "0"), /* Normal (non-filename) text */
VAR(NOS, "mi", ""), /* Missing file (defaults to fi) */
#ifdef IS_ASCII
VAR(NOS, "lc", "\033["), /* Left code (ASCII) */
#else
VAR(NOS, "lc", "\x27["), /* Left code (EBCDIC)*/
#endif
VAR(NOS, "rc", "m"), /* Right code */
VAR(NOS, "ec", ""), /* End code (replaces lc+no+rc) */
VAR(NOS, "su", ""), /* Setuid file (u+s) */
VAR(NOS, "sg", ""), /* Setgid file (g+s) */
VAR(NOS, "tw", ""), /* Sticky and other writable dir (+t,o+w) */
VAR(NOS, "ow", ""), /* Other writable dir (o+w) but not sticky */
VAR(NOS, "st", ""), /* Sticky dir (+t) but not other writable */
VAR(NOS, "rs", "0"), /* Reset to normal color */
VAR(NOS, "hl", "44;37"), /* Reg file extra hard links, obsolete? */
VAR(NOS, "mh", "44;37"), /* Reg file extra hard links */
VAR(NOS, "ca", "30;41"), /* File with capability */
};
#define nvariables (sizeof(variables)/sizeof(variables[0]))
enum FileType {
VDir, VSym, VOrph, VPipe, VSock, VDoor, VBlock, VChr, VExe,
VFile, VNormal, VMiss, VLeft, VRight, VEnd, VSuid, VSgid, VSticky,
VOther, Vstird, VReset, Vhard, Vhard2, VCap
};
/*
* Map from LSCOLORS entry index to Variable array index
*/
static const uint8_t map[] = {
VDir, /* Directory */
VSym, /* Symbolic Link */
VSock, /* Socket */
VPipe, /* Named Pipe */
VExe, /* Executable */
VBlock, /* Block Special */
VChr, /* Character Special */
VSuid, /* Setuid Executable */
VSgid, /* Setgid Executable */
VSticky, /* Directory writable to others and sticky */
VOther, /* Directory writable to others but not sticky */
};
enum ansi {
ANSI_RESET_ON = 0, /* reset colors/styles (white on black) */
ANSI_BOLD_ON = 1, /* bold on */
ANSI_ITALICS_ON = 3, /* italics on */
ANSI_UNDERLINE_ON = 4, /* underline on */
ANSI_INVERSE_ON = 7, /* inverse on */
ANSI_STRIKETHROUGH_ON = 9, /* strikethrough on */
ANSI_BOLD_OFF = 21, /* bold off */
ANSI_ITALICS_OFF = 23, /* italics off */
ANSI_UNDERLINE_OFF = 24, /* underline off */
ANSI_INVERSE_OFF = 27, /* inverse off */
ANSI_STRIKETHROUGH_OFF = 29,/* strikethrough off */
ANSI_FG_BLACK = 30, /* fg black */
ANSI_FG_RED = 31, /* fg red */
ANSI_FG_GREEN = 32, /* fg green */
ANSI_FG_YELLOW = 33, /* fg yellow */
ANSI_FG_BLUE = 34, /* fg blue */
ANSI_FG_MAGENTA = 35, /* fg magenta */
ANSI_FG_CYAN = 36, /* fg cyan */
ANSI_FG_WHITE = 37, /* fg white */
ANSI_FG_DEFAULT = 39, /* fg default (white) */
ANSI_BG_BLACK = 40, /* bg black */
ANSI_BG_RED = 41, /* bg red */
ANSI_BG_GREEN = 42, /* bg green */
ANSI_BG_YELLOW = 43, /* bg yellow */
ANSI_BG_BLUE = 44, /* bg blue */
ANSI_BG_MAGENTA = 45, /* bg magenta */
ANSI_BG_CYAN = 46, /* bg cyan */
ANSI_BG_WHITE = 47, /* bg white */
ANSI_BG_DEFAULT = 49, /* bg default (black) */
};
#define TCSH_BOLD 0x80
typedef struct {
Str extension; /* file extension */
Str color; /* color string */
} Extension;
static Extension *extensions = NULL;
static size_t nextensions = 0;
static char *colors = NULL;
int color_context_ls = FALSE; /* do colored ls */
static int color_context_lsmF = FALSE; /* do colored ls-F */
static int getstring (char **, const Char **, Str *, int);
static void put_color (const Str *);
static void print_color (const Char *, size_t, Char);
/* set_color_context():
*/
void
set_color_context(void)
{
struct varent *vp = adrof(STRcolor);
if (vp == NULL || vp->vec == NULL) {
color_context_ls = FALSE;
color_context_lsmF = FALSE;
} else if (!vp->vec[0] || vp->vec[0][0] == '\0') {
color_context_ls = TRUE;
color_context_lsmF = TRUE;
} else {
size_t i;
color_context_ls = FALSE;
color_context_lsmF = FALSE;
for (i = 0; vp->vec[i]; i++)
if (Strcmp(vp->vec[i], STRls) == 0)
color_context_ls = TRUE;
else if (Strcmp(vp->vec[i], STRlsmF) == 0)
color_context_lsmF = TRUE;
}
}
/* getstring():
*/
static int
getstring(char **dp, const Char **sp, Str *pd, int f)
{
const Char *s = *sp;
char *d = *dp;
eChar sc;
while (*s && (*s & CHAR) != (Char)f && (*s & CHAR) != ':') {
if ((*s & CHAR) == '\\' || (*s & CHAR) == '^') {
if ((sc = parseescape(&s)) == CHAR_ERR)
return 0;
}
else
sc = *s++ & CHAR;
d += one_wctomb(d, sc);
}
pd->s = *dp;
pd->len = d - *dp;
*sp = s;
*dp = d;
return *s == (Char)f;
}
static void
init(size_t colorlen, size_t extnum)
{
size_t i;
xfree(extensions);
for (i = 0; i < nvariables; i++)
variables[i].color = variables[i].defaultcolor;
if (colorlen == 0 && extnum == 0) {
extensions = NULL;
colors = NULL;
} else {
extensions = xmalloc(colorlen + extnum * sizeof(*extensions));
colors = extnum * sizeof(*extensions) + (char *)extensions;
}
nextensions = 0;
}
static int
color(Char x)
{
static const char ccolors[] = "abcdefghx";
char *p;
if (Isupper(x)) {
x = Tolower(x);
}
if (x == '\0' || (p = strchr(ccolors, x)) == NULL)
return -1;
return 30 + (p - ccolors);
}
static void
makecolor(char **c, int fg, int bg, Str *v)
{
int l;
if (fg & 0x80)
l = xsnprintf(*c, 12, "%.2d;%.2d;%.2d;%.2d", ANSI_BOLD_ON,
fg & ~TCSH_BOLD, (10 + bg) & ~TCSH_BOLD, ANSI_BOLD_OFF);
l = xsnprintf(*c, 6, "%.2d;%.2d",
fg & ~TCSH_BOLD, (10 + bg) & ~TCSH_BOLD);
v->s = *c;
v->len = l;
*c += l + 1;
}
/* parseLSCOLORS():
* Parse the LSCOLORS environment variable
*/
static const Char *xv; /* setjmp clobbering */
void
parseLSCOLORS(const Char *value)
{
size_t i, len, clen;
jmp_buf_t osetexit;
size_t omark;
xv = value;
if (xv == NULL) {
init(0, 0);
return;
}
len = Strlen(xv);
len >>= 1;
clen = len * 12; /* "??;??;??;??\0" */
init(clen, 0);
/* Prevent from crashing if unknown parameters are given. */
omark = cleanup_push_mark();
getexit(osetexit);
/* init pointers */
if (setexit() == 0) {
const Char *v = xv;
char *c = colors;
int fg, bg;
for (i = 0; i < len; i++) {
fg = color(*v++);
if (fg == -1)
stderror(ERR_BADCOLORVAR, v[-1], '?');
bg = color(*v++);
if (bg == -1)
stderror(ERR_BADCOLORVAR, '?', v[-1]);
makecolor(&c, fg, bg, &variables[map[i]].color);
}
}
cleanup_pop_mark(omark);
resexit(osetexit);
}
/* parseLS_COLORS():
* Parse the LS_COLORS environment variable
*/
void
parseLS_COLORS(const Char *value)
{
size_t i, len;
const Char *v; /* pointer in value */
char *c; /* pointer in colors */
Extension *volatile e; /* pointer in extensions */
jmp_buf_t osetexit;
size_t omark;
(void) &e;
if (value == NULL) {
init(0, 0);
return;
}
len = Strlen(value);
/* allocate memory */
i = 1;
for (v = value; *v; v++)
if ((*v & CHAR) == ':')
i++;
init(len, i);
/* init pointers */
v = value;
c = colors;
e = extensions;
/* Prevent from crashing if unknown parameters are given. */
omark = cleanup_push_mark();
getexit(osetexit);
if (setexit() == 0) {
/* parse */
while (*v) {
switch (*v & CHAR) {
case ':':
v++;
continue;
case '*': /* :*ext=color: */
v++;
if (getstring(&c, &v, &e->extension, '=') &&
0 < e->extension.len) {
v++;
getstring(&c, &v, &e->color, ':');
e++;
continue;
}
break;
default: /* :vl=color: */
if (v[0] && v[1] && (v[2] & CHAR) == '=') {
for (i = 0; i < nvariables; i++)
if ((Char)variables[i].variable[0] == (v[0] & CHAR) &&
(Char)variables[i].variable[1] == (v[1] & CHAR))
break;
if (i < nvariables) {
v += 3;
getstring(&c, &v, &variables[i].color, ':');
continue;
}
else
stderror(ERR_BADCOLORVAR, v[0], v[1]);
}
break;
}
while (*v && (*v & CHAR) != ':')
v++;
}
}
cleanup_pop_mark(omark);
resexit(osetexit);
nextensions = e - extensions;
}
/* put_color():
*/
static void
put_color(const Str *colorp)
{
size_t i;
const char *c = colorp->s;
int original_output_raw = output_raw;
output_raw = TRUE;
cleanup_push(&original_output_raw, output_raw_restore);
for (i = colorp->len; 0 < i; i--)
xputchar(*c++);
cleanup_until(&original_output_raw);
}
/* print_color():
*/
static void
print_color(const Char *fname, size_t len, Char suffix)
{
size_t i;
char *filename = short2str(fname);
char *last = filename + len;
Str *colorp = &variables[VFile].color;
switch (suffix) {
case '>': /* File is a symbolic link pointing to
* a directory */
colorp = &variables[VDir].color;
break;
case '+': /* File is a hidden directory [aix] or
* context dependent [hpux] */
case ':': /* File is network special [hpux] */
break;
default:
for (i = 0; i < nvariables; i++)
if (variables[i].suffix != NOS &&
(Char)variables[i].suffix == suffix) {
colorp = &variables[i].color;
break;
}
if (i == nvariables) {
for (i = 0; i < nextensions; i++)
if (len >= extensions[i].extension.len
&& strncmp(last - extensions[i].extension.len,
extensions[i].extension.s,
extensions[i].extension.len) == 0) {
colorp = &extensions[i].color;
break;
}
}
break;
}
put_color(&variables[VLeft].color);
put_color(colorp);
put_color(&variables[VRight].color);
}
/* print_with_color():
*/
void
print_with_color(const Char *filename, size_t len, Char suffix)
{
if (color_context_lsmF &&
(haderr ? (didfds ? is2atty : isdiagatty) :
(didfds ? is1atty : isoutatty))) {
print_color(filename, len, suffix);
xprintf("%S", filename);
if (0 < variables[VEnd].color.len)
put_color(&variables[VEnd].color);
else {
put_color(&variables[VLeft].color);
put_color(&variables[VNormal].color);
put_color(&variables[VRight].color);
}
}
else
xprintf("%S", filename);
xputwchar(suffix);
}
#endif /* COLOR_LS_F */