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/* `dir', `vdir' and `ls' directory listing programs for GNU.
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Modified by Chet Ramey for Readline.
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Copyright (C) 1985, 1988, 1990-1991, 1995-2010, 2012 Free Software Foundation,
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Richard Stallman and David MacKenzie. */
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/* Color support by Peter Anvin <Peter.Anvin@linux.org> and Dennis
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Flaherty <dennisf@denix.elk.miles.com> based on original patches by
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Greg Lee <lee@uhunix.uhcc.hawaii.edu>. */
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#define READLINE_LIBRARY
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#if defined (HAVE_CONFIG_H)
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// strdup() / strcpy()
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#if defined (HAVE_STRING_H)
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#else /* !HAVE_STRING_H */
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#endif /* !HAVE_STRING_H */
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#if defined (HAVE_STDLIB_H)
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# include "ansi_stdlib.h"
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#endif /* HAVE_STDLIB_H */
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#include "rldefs.h" // STREQ, savestring
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#include "rlprivate.h"
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#include "parse-colors.h"
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#if defined (COLOR_SUPPORT)
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static bool get_funky_string (char **dest, const char **src, bool equals_end, size_t *output_count);
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struct bin_str _rl_color_indicator[] =
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{ LEN_STR_PAIR ("\033[") }, // lc: Left of color sequence
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{ LEN_STR_PAIR ("m") }, // rc: Right of color sequence
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{ 0, NULL }, // ec: End color (replaces lc+no+rc)
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{ LEN_STR_PAIR ("0") }, // rs: Reset to ordinary colors
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{ 0, NULL }, // no: Normal
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{ 0, NULL }, // fi: File: default
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{ LEN_STR_PAIR ("01;34") }, // di: Directory: bright blue
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{ LEN_STR_PAIR ("01;36") }, // ln: Symlink: bright cyan
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{ LEN_STR_PAIR ("33") }, // pi: Pipe: yellow/brown
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{ LEN_STR_PAIR ("01;35") }, // so: Socket: bright magenta
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{ LEN_STR_PAIR ("01;33") }, // bd: Block device: bright yellow
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{ LEN_STR_PAIR ("01;33") }, // cd: Char device: bright yellow
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{ 0, NULL }, // mi: Missing file: undefined
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{ 0, NULL }, // or: Orphaned symlink: undefined
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{ LEN_STR_PAIR ("01;32") }, // ex: Executable: bright green
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{ LEN_STR_PAIR ("01;35") }, // do: Door: bright magenta
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{ LEN_STR_PAIR ("37;41") }, // su: setuid: white on red
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{ LEN_STR_PAIR ("30;43") }, // sg: setgid: black on yellow
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{ LEN_STR_PAIR ("37;44") }, // st: sticky: black on blue
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{ LEN_STR_PAIR ("34;42") }, // ow: other-writable: blue on green
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{ LEN_STR_PAIR ("30;42") }, // tw: ow w/ sticky: black on green
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{ LEN_STR_PAIR ("30;41") }, // ca: black on red
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{ 0, NULL }, // mh: disabled by default
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{ LEN_STR_PAIR ("\033[K") }, // cl: clear to end of line
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/* Parse a string as part of the LS_COLORS variable; this may involve
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decoding all kinds of escape characters. If equals_end is set an
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unescaped equal sign ends the string, otherwise only a : or \0
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does. Set *OUTPUT_COUNT to the number of bytes output. Return
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The resulting string is *not* null-terminated, but may contain
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Note that both dest and src are char **; on return they point to
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the first free byte after the array and the character that ended
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the input string, respectively. */
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get_funky_string (char **dest, const char **src, bool equals_end, size_t *output_count) {
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char num; /* For numerical codes */
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size_t count; /* Something to count with */
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ST_GND, ST_BACKSLASH, ST_OCTAL, ST_HEX, ST_CARET, ST_END, ST_ERROR
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p = *src; /* We don't want to double-indirect */
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q = *dest; /* the whole darn time. */
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count = 0; /* No characters counted in yet. */
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state = ST_GND; /* Start in ground state. */
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while (state < ST_END)
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case ST_GND: /* Ground state (no escapes) */
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state = ST_END; /* End of string */
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state = ST_BACKSLASH; /* Backslash scape sequence */
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state = ST_CARET; /* Caret escape */
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state = ST_END; /* End */
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/* else fall through */
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case ST_BACKSLASH: /* Backslash escaped character */
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state = ST_OCTAL; /* Octal sequence */
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state = ST_HEX; /* Hex sequence */
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case 'b': /* Backspace */
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case 'e': /* Escape */
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case 'f': /* Form feed */
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case 'n': /* Newline */
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case 'r': /* Carriage return */
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case '?': /* Delete */
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case '_': /* Space */
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case '\0': /* End of string */
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state = ST_ERROR; /* Error! */
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default: /* Escaped character like \ ^ : = */
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if (state == ST_BACKSLASH)
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case ST_OCTAL: /* Octal sequence */
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if (*p < '0' || *p > '7')
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num = (num << 3) + (*(p++) - '0');
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case ST_HEX: /* Hex sequence */
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num = (num << 4) + (*(p++) - '0');
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num = (num << 4) + (*(p++) - 'a') + 10;
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num = (num << 4) + (*(p++) - 'A') + 10;
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case ST_CARET: /* Caret escape */
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state = ST_GND; /* Should be the next state... */
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if (*p >= '@' && *p <= '~')
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*(q++) = *(p++) & 037;
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/* abort (); no, we should not */
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*output_count = count;
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return state != ST_ERROR;
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#endif /* COLOR_SUPPORT */
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void _rl_parse_colors()
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#if defined (COLOR_SUPPORT)
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const char *p; /* Pointer to character being parsed */
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char *buf; /* color_buf buffer pointer */
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int state; /* State of parser */
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int ind_no; /* Indicator number */
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char label[3]; /* Indicator label */
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COLOR_EXT_TYPE *ext; /* Extension we are working on */
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p = sh_get_env_value ("LS_COLORS");
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if (p == 0 || *p == '\0')
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_rl_color_ext_list = NULL;
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strcpy (label, "??");
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/* This is an overly conservative estimate, but any possible
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LS_COLORS string will *not* generate a color_buf longer than
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itself, so it is a safe way of allocating a buffer in
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buf = color_buf = savestring (p);
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case 1: /* First label character */
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/* Allocate new extension block and add to head of
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linked list (this way a later definition will
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override an earlier one, which can be useful for
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having terminal-specific defs override global). */
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ext = (COLOR_EXT_TYPE *)xmalloc (sizeof *ext);
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ext->next = _rl_color_ext_list;
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_rl_color_ext_list = ext;
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ext->ext.string = buf;
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state = (get_funky_string (&buf, &p, true, &ext->ext.len)
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state = 0; /* Done! */
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default: /* Assume it is file type label */
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case 2: /* Second label character */
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state = -1; /* Error */
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case 3: /* Equal sign after indicator label */
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state = -1; /* Assume failure... */
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if (*(p++) == '=')/* It *should* be... */
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for (ind_no = 0; indicator_name[ind_no] != NULL; ++ind_no)
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if (STREQ (label, indicator_name[ind_no]))
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_rl_color_indicator[ind_no].string = buf;
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state = (get_funky_string (&buf, &p, false,
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&_rl_color_indicator[ind_no].len)
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_rl_errmsg ("LS_COLORS: unrecognized prefix: %s", label);
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/* recover from an unrecognized prefix */
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while (p && *p && *p != ':')
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else if (p && *p == 0)
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case 4: /* Equal sign after *.ext */
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ext->seq.string = buf;
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state = (get_funky_string (&buf, &p, false, &ext->seq.len)
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/* XXX - recover here as with an unrecognized prefix? */
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if (state == -1 && ext->ext.string)
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_rl_errmsg ("LS_COLORS: syntax error: %s", ext->ext.string);
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_rl_errmsg ("unparsable value for LS_COLORS environment variable");
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for (e = _rl_color_ext_list; e != NULL; /* empty */)
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_rl_color_ext_list = NULL;
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_rl_colored_stats = 0; /* can't have colored stats without colors */
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#else /* !COLOR_SUPPORT */
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#endif /* !COLOR_SUPPORT */
added
removed
lib/readline/parse-colors.c
