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colorize.c
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colorize.c
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/*
* colorize - Read text from standard input stream or file and print
* it colorized through use of ANSI escape sequences
*
* Copyright (c) 2011-2022 Steven Schubiger
*
* 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/>.
*
*/
#define _DEFAULT_SOURCE
#define _BSD_SOURCE
#define _XOPEN_SOURCE 700
#define _FILE_OFFSET_BITS 64
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include <wordexp.h>
#ifndef DEBUG
# define DEBUG 0
#endif
#define str(arg) #arg
#define to_str(arg) str(arg)
#define streq(s1, s2) (strcmp (s1, s2) == 0)
#define strneq(s1, s2, n) (strncmp (s1, s2, n) == 0)
#if !DEBUG
# define xmalloc(size) malloc_wrap(size)
# define xcalloc(nmemb, size) calloc_wrap(nmemb, size)
# define xrealloc(ptr, size) realloc_wrap(ptr, size)
# define xstrdup(str) strdup_wrap(str, NULL, 0)
# define str_concat(str1, str2) str_concat_wrap(str1, str2, NULL, 0)
#else
# define xmalloc(size) malloc_wrap_debug(size, __FILE__, __LINE__)
# define xcalloc(nmemb, size) calloc_wrap_debug(nmemb, size, __FILE__, __LINE__)
# define xrealloc(ptr, size) realloc_wrap_debug(ptr, size, __FILE__, __LINE__)
# define xstrdup(str) strdup_wrap(str, __FILE__, __LINE__)
# define str_concat(str1, str2) str_concat_wrap(str1, str2, __FILE__, __LINE__)
#endif
#define free_null(ptr) free_wrap((void **)&ptr)
#if defined(BUF_SIZE) && (BUF_SIZE <= 0 || BUF_SIZE > 65536)
# undef BUF_SIZE
#endif
#ifndef BUF_SIZE
# define BUF_SIZE 4096
#endif
#define LF 0x01
#define CR 0x02
#define PARTIAL 0x04
#define COUNT_OF(obj, type) (sizeof (obj) / sizeof (type))
#define SKIP_LINE_ENDINGS(flags) ((flags) == (CR|LF) ? 2 : 1)
#define VALID_FILE_TYPE(mode) (S_ISREG (mode) || S_ISLNK (mode) || S_ISFIFO (mode))
#define STACK_VAR(ptr) do { \
stack (&vars_list, &stacked_vars, stacked_vars, ptr, IS_GENERIC); \
} while (false)
#define STACK_FILE(ptr) do { \
stack (&vars_list, &stacked_vars, stacked_vars, ptr, IS_FILE); \
} while (false)
#define RELEASE(ptr) do { \
release (vars_list, stacked_vars, (void **)&ptr); \
} while (false)
#if !DEBUG
# define MEM_ALLOC_FAIL() do { \
fprintf (stderr, "%s: memory allocation failure\n", program_name); \
exit (EXIT_FAILURE); \
} while (false)
#else
# define MEM_ALLOC_FAIL_DEBUG(file, line) do { \
fprintf (stderr, "Memory allocation failure in source file %s, line %u\n", file, line); \
exit (EXIT_FAILURE); \
} while (false)
#endif
#define ABORT_TRACE() \
fprintf (stderr, "Aborting in source file %s, line %u\n", __FILE__, __LINE__); \
abort ();
#define CHECK_COLORS_RANDOM(color1, color2) \
streq (color_names[color1]->name, "random") \
&& (streq (color_names[color2]->name, "none") \
|| streq (color_names[color2]->name, "default"))
#define ALLOC_COMPLETE_PART_LINE 8
#if defined(COLOR_SEP_CHAR_COLON)
# define COLOR_SEP_CHAR ':'
#elif defined(COLOR_SEP_CHAR_SLASH)
# define COLOR_SEP_CHAR '/'
#else
# define COLOR_SEP_CHAR '/'
#endif
#define CONF_FILE ".colorize.conf"
#if DEBUG
# define DEBUG_FILE "debug.txt"
#endif
#define MAX_ATTRIBUTE_CHARS (6 * 2)
#define PROGRAM_NAME "colorize"
#define VERSION "0.66"
typedef enum { false, true } bool;
struct conf {
char *attr;
char *color;
char *exclude_random;
char *omit_color_empty;
char *rainbow_fg;
char *rainbow_bg;
};
enum { DESC_OPTION, DESC_CONF };
struct color_name {
char *name;
char *orig;
};
struct color {
const char *name;
const char *code;
unsigned int index;
};
static unsigned int rainbow_index;
static const struct color fg_colors[] = {
{ "none", NULL, 0 },
{ "black", "30m", 1 },
{ "red", "31m", 2 },
{ "green", "32m", 3 },
{ "yellow", "33m", 4 },
{ "blue", "34m", 5 },
{ "magenta", "35m", 6 },
{ "cyan", "36m", 7 },
{ "white", "37m", 8 },
{ "default", "39m", 9 },
};
static const struct color bg_colors[] = {
{ "none", NULL, 0 },
{ "black", "40m", 1 },
{ "red", "41m", 2 },
{ "green", "42m", 3 },
{ "yellow", "43m", 4 },
{ "blue", "44m", 5 },
{ "magenta", "45m", 6 },
{ "cyan", "46m", 7 },
{ "white", "47m", 8 },
{ "default", "49m", 9 },
};
struct bytes_size {
unsigned int size;
char unit;
};
enum {
FMT_GENERIC,
FMT_STRING,
FMT_QUOTE,
FMT_COLOR,
FMT_RANDOM,
FMT_ERROR,
FMT_FILE,
FMT_TYPE,
FMT_CONF,
FMT_CONF_FILE,
FMT_CONF_INIT,
FMT_RAINBOW
};
static const char *formats[] = {
"%s", /* generic */
"%s '%s'", /* string */
"%s `%s' %s", /* quote */
"%s color '%s' %s", /* color */
"%s color '%s' %s '%s'", /* random */
"less than %lu bytes %s", /* error */
"%s: %s", /* file */
"%s: %s: %s", /* type */
"%s: option '%s' %s", /* conf */
"config file %s: %s", /* conf file */
"%s %s", /* conf init */
"%s color '%s' %s %s" /* rainbow */
};
enum { GENERIC, FOREGROUND = 0, BACKGROUND };
static const struct {
const struct color *entries;
unsigned int count;
const char *desc;
} tables[] = {
{ fg_colors, COUNT_OF (fg_colors, struct color), "foreground" },
{ bg_colors, COUNT_OF (bg_colors, struct color), "background" },
};
static unsigned int opts_set;
enum opt_set {
OPT_ATTR_SET = 0x01,
OPT_EXCLUDE_RANDOM_SET = 0x02,
OPT_OMIT_COLOR_EMPTY_SET = 0x04,
OPT_RAINBOW_FG_SET = 0x08,
OPT_RAINBOW_BG_SET = 0x10
};
static struct {
char *attr;
char *exclude_random;
} opts_arg = { NULL, NULL };
enum {
OPT_ATTR = 1,
OPT_CLEAN,
OPT_CLEAN_ALL,
OPT_CONFIG,
OPT_EXCLUDE_RANDOM,
OPT_OMIT_COLOR_EMPTY,
OPT_RAINBOW_FG,
OPT_RAINBOW_BG,
OPT_HELP,
OPT_VERSION
};
static int opt_type;
static const struct option long_opts[] = {
{ "attr", required_argument, &opt_type, OPT_ATTR },
{ "clean", no_argument, &opt_type, OPT_CLEAN },
{ "clean-all", no_argument, &opt_type, OPT_CLEAN_ALL },
{ "config", required_argument, &opt_type, OPT_CONFIG },
{ "exclude-random", required_argument, &opt_type, OPT_EXCLUDE_RANDOM },
{ "omit-color-empty", no_argument, &opt_type, OPT_OMIT_COLOR_EMPTY },
{ "rainbow-fg", no_argument, &opt_type, OPT_RAINBOW_FG },
{ "rainbow-bg", no_argument, &opt_type, OPT_RAINBOW_BG },
{ "help", no_argument, &opt_type, OPT_HELP },
{ "version", no_argument, &opt_type, OPT_VERSION },
{ NULL, 0, NULL, 0 },
};
enum attr_type {
ATTR_BOLD = 0x01,
ATTR_UNDERSCORE = 0x02,
ATTR_BLINK = 0x04,
ATTR_REVERSE = 0x08,
ATTR_CONCEALED = 0x10
};
struct attr {
const char *name;
unsigned int val;
enum attr_type type;
};
enum var_type {
IS_GENERIC,
IS_FILE,
IS_UNUSED
};
struct var_list {
void *ptr;
enum var_type type;
};
static FILE *stream;
#if DEBUG
static FILE *log;
#endif
static unsigned int stacked_vars;
static struct var_list *vars_list;
static struct {
bool fg;
bool bg;
} rainbow_from_conf = { false, false };
static bool clean;
static bool clean_all;
static bool omit_color_empty;
static bool rainbow_fg;
static bool rainbow_bg;
static char attr[MAX_ATTRIBUTE_CHARS + 1];
static char *exclude;
static const char *program_name;
#if DEBUG
static void print_tstamp (FILE *);
#endif
static void process_opts (int, char **, char **);
static void conf_file_path (char **);
static void process_opt_attr (const char *, const bool);
static void write_attr (const struct attr *, unsigned int *, const bool);
static void process_opt_exclude_random (const char *, const bool);
static void parse_conf (const char *, struct conf *);
static void assign_conf (const char *, struct conf *, const char *, char *);
static void init_conf_vars (const char *, const struct conf *);
static void init_conf_boolean (const char *, bool *, const char *, bool *);
static void init_opts_vars (void);
static void print_hint (void);
static void print_help (void);
static void print_version (void);
static void cleanup (void);
static void free_color_names (struct color_name **);
static void free_conf (struct conf *);
static void process_args (unsigned int, char **, char *, const struct color **, const char **, FILE **, struct conf *);
static void process_file_arg (const char *, const char **, FILE **);
static bool skip_path_colors (const char *, const char *, const struct stat *, const bool);
static void gather_color_names (const char *, char *, struct color_name **);
static void read_print_stream (const char *, const struct color **, const char *, FILE *);
static void merge_print_line (const char *, const char *, FILE *);
static void complete_part_line (const char *, char **, FILE *);
static bool get_next_char (char *, const char **, FILE *, bool *);
static void save_char (char, char **, size_t *, size_t *);
static void find_color_entries (struct color_name **, const struct color **);
static void find_color_entry (const struct color_name *, unsigned int, const struct color **);
static void print_line (const char *, const struct color **, const char * const, unsigned int, bool);
static unsigned int get_rainbow_index (const struct color **, unsigned int, unsigned int, unsigned int);
static bool skipable_rainbow_index (const struct color **, unsigned int, unsigned int);
static void print_clean (const char *);
static bool is_esc (const char *);
static const char *get_end_of_esc (const char *);
static const char *get_end_of_text (const char *);
static void print_text (const char *, size_t);
static bool gather_esc_offsets (const char *, const char **, const char **);
static bool validate_esc_clean_all (const char **);
static bool validate_esc_clean (int, unsigned int, unsigned int *, const char **, bool *);
static bool is_reset (int, unsigned int, const char **);
static bool is_attr (int, unsigned int, unsigned int, const char **);
static bool is_fg_color (int, const char **);
static bool is_bg_color (int, unsigned int, const char **);
#if !DEBUG
static void *malloc_wrap (size_t);
static void *calloc_wrap (size_t, size_t);
static void *realloc_wrap (void *, size_t);
#else
static void *malloc_wrap_debug (size_t, const char *, unsigned int);
static void *calloc_wrap_debug (size_t, size_t, const char *, unsigned int);
static void *realloc_wrap_debug (void *, size_t, const char *, unsigned int);
#endif
static void free_wrap (void **);
static char *strdup_wrap (const char *, const char *, unsigned int);
static char *str_concat_wrap (const char *, const char *, const char *, unsigned int);
static char *expand_string (const char *);
static bool get_bytes_size (unsigned long, struct bytes_size *);
static char *get_file_type (mode_t);
static bool has_color_name (const char *, const char *);
static FILE *open_file (const char *, const char *);
static void vfprintf_diag (const char *, ...);
static void vfprintf_fail (const char *, ...);
static void stack (struct var_list **, unsigned int *, unsigned int, void *, enum var_type);
static void release (struct var_list *, unsigned int, void **);
int
main (int argc, char **argv)
{
unsigned int arg_cnt;
const struct color *colors[2] = {
NULL, /* foreground */
NULL, /* background */
};
const char *file = NULL;
char *conf_file = NULL;
struct conf config = { NULL, NULL, NULL, NULL, NULL, NULL };
program_name = argv[0];
atexit (cleanup);
setvbuf (stdout, NULL, _IOLBF, 0);
#if DEBUG
log = open_file (DEBUG_FILE, "w");
print_tstamp (log);
/* We're in debugging mode, hence we can't invoke STACK_FILE()
prior to print_tstamp(), because both cause text to be written
to the same logfile which is expected to have the timestamp
first. */
STACK_FILE (log);
#endif
attr[0] = '\0';
process_opts (argc, argv, &conf_file);
#ifdef CONF_FILE_TEST
conf_file = to_str (CONF_FILE_TEST);
#elif !defined(TEST)
if (conf_file == NULL)
{
conf_file_path (&conf_file);
STACK_VAR (conf_file);
}
else
{
char *s;
if ((s = expand_string (conf_file)))
{
free (conf_file);
conf_file = s;
}
STACK_VAR (conf_file);
errno = 0;
if (access (conf_file, F_OK) == -1)
vfprintf_fail (formats[FMT_CONF_FILE], conf_file, strerror (errno));
}
#endif
#if defined(CONF_FILE_TEST) || !defined(TEST)
if (access (conf_file, F_OK) != -1)
parse_conf (conf_file, &config);
#endif
init_conf_vars (conf_file, &config);
init_opts_vars ();
#if !defined(CONF_FILE_TEST) && !defined(TEST)
RELEASE (conf_file);
#endif
arg_cnt = argc - optind;
if (clean || clean_all)
{
if (clean && clean_all)
vfprintf_fail (formats[FMT_GENERIC], "--clean and --clean-all switch are mutually exclusive");
if (arg_cnt > 1)
vfprintf_fail ("--clean%s switch cannot be used with more than one file", clean_all ? "-all" : "");
{
unsigned int i;
const struct option_set {
const char *option;
enum opt_set set;
} options[] = {
{ "attr", OPT_ATTR_SET },
{ "exclude-random", OPT_EXCLUDE_RANDOM_SET },
{ "omit-color-empty", OPT_OMIT_COLOR_EMPTY_SET },
{ "rainbow-fg", OPT_RAINBOW_FG_SET },
{ "rainbow-bg", OPT_RAINBOW_BG_SET },
};
for (i = 0; i < COUNT_OF (options, struct option_set); i++)
if (opts_set & options[i].set)
vfprintf_diag ("--%s switch has no meaning with --clean%s", options[i].option, clean_all ? "-all" : "");
}
}
else
{
if (rainbow_fg && rainbow_bg)
vfprintf_fail ("%s and %s are mutually exclusive",
!rainbow_from_conf.fg ? "--rainbow-fg switch" : "rainbow-fg conf option",
!rainbow_from_conf.bg ? "--rainbow-bg switch" : "rainbow-bg conf option"
);
if (arg_cnt == 0 || arg_cnt > 2)
{
vfprintf_diag ("%u arguments provided, expected 1-2 arguments or --clean[-all]", arg_cnt);
print_hint ();
exit (EXIT_FAILURE);
}
}
if (clean || clean_all)
process_file_arg (argv[optind], &file, &stream);
else
process_args (arg_cnt, &argv[optind], &attr[0], colors, &file, &stream, &config);
read_print_stream (&attr[0], colors, file, stream);
free_conf (&config);
RELEASE (exclude);
exit (EXIT_SUCCESS);
}
#if DEBUG
static void
print_tstamp (FILE *log)
{
time_t t;
struct tm *tm;
char str[128];
size_t written;
t = time (NULL);
tm = localtime (&t);
if (tm == NULL)
{
perror ("localtime");
exit (EXIT_FAILURE);
}
written = strftime (str, sizeof (str), "%Y-%m-%d %H:%M:%S %Z", tm);
if (written == 0)
vfprintf_fail (formats[FMT_GENERIC], "strftime: 0 returned");
fprintf (log, "%s\n", str);
while (written--)
fprintf (log, "=");
fprintf (log, "\n");
}
#endif
#define DUP_CONFIG() \
*conf_file = xstrdup (optarg); \
break;
#define PRINT_HELP_EXIT() \
print_help (); \
exit (EXIT_SUCCESS);
#define PRINT_VERSION_EXIT() \
print_version (); \
exit (EXIT_SUCCESS);
static void
process_opts (int argc, char **argv, char **conf_file)
{
int opt;
while ((opt = getopt_long (argc, argv, "c:hV", long_opts, NULL)) != -1)
{
switch (opt)
{
case 0: /* long opts */
switch (opt_type)
{
case OPT_ATTR:
opts_set |= OPT_ATTR_SET;
opts_arg.attr = xstrdup (optarg);
STACK_VAR (opts_arg.attr);
break;
case OPT_CLEAN:
clean = true;
break;
case OPT_CLEAN_ALL:
clean_all = true;
break;
case OPT_CONFIG:
DUP_CONFIG ();
case OPT_EXCLUDE_RANDOM:
opts_set |= OPT_EXCLUDE_RANDOM_SET;
opts_arg.exclude_random = xstrdup (optarg);
STACK_VAR (opts_arg.exclude_random);
break;
case OPT_OMIT_COLOR_EMPTY:
opts_set |= OPT_OMIT_COLOR_EMPTY_SET;
break;
case OPT_RAINBOW_FG:
opts_set |= OPT_RAINBOW_FG_SET;
break;
case OPT_RAINBOW_BG:
opts_set |= OPT_RAINBOW_BG_SET;
break;
case OPT_HELP:
PRINT_HELP_EXIT ();
case OPT_VERSION:
PRINT_VERSION_EXIT ();
default: /* never reached */
ABORT_TRACE ();
}
break;
case 'c':
DUP_CONFIG ();
case 'h':
PRINT_HELP_EXIT ();
case 'V':
PRINT_VERSION_EXIT ();
case '?':
print_hint ();
exit (EXIT_FAILURE);
default: /* never reached */
ABORT_TRACE ();
}
}
}
static void
conf_file_path (char **conf_file)
{
char *path;
uid_t uid;
struct passwd *passwd;
size_t size;
uid = getuid ();
errno = 0;
if ((passwd = getpwuid (uid)) == NULL)
{
if (errno == 0)
vfprintf_diag ("password file entry for uid %lu not found", (unsigned long)uid);
else
perror ("getpwuid");
exit (EXIT_FAILURE);
}
/* getpwuid() leaks memory */
size = strlen (passwd->pw_dir) + 1 + strlen (CONF_FILE) + 1;
path = xmalloc (size);
snprintf (path, size, "%s/%s", passwd->pw_dir, CONF_FILE);
*conf_file = path;
}
static void
process_opt_attr (const char *p, const bool is_opt)
{
/* If attributes are added to this "list", also increase MAX_ATTRIBUTE_CHARS! */
const struct attr attrs[] = {
{ "bold", 1, ATTR_BOLD },
{ "underscore", 4, ATTR_UNDERSCORE },
{ "blink", 5, ATTR_BLINK },
{ "reverse", 7, ATTR_REVERSE },
{ "concealed", 8, ATTR_CONCEALED },
};
unsigned int attr_types = 0;
const char *desc_type[2] = { "--attr switch", "attr conf option" };
const unsigned int DESC_TYPE = is_opt ? DESC_OPTION : DESC_CONF;
while (*p)
{
const char *s;
if (!isalnum ((unsigned char)*p))
vfprintf_fail ("%s must be provided a string", desc_type[DESC_TYPE]);
s = p;
while (isalnum ((unsigned char)*p))
p++;
if (*p != '\0' && *p != ',')
vfprintf_fail ("%s must have strings separated by ,", desc_type[DESC_TYPE]);
else
{
bool valid_attr = false;
unsigned int i;
for (i = 0; i < COUNT_OF (attrs, struct attr); i++)
{
const size_t name_len = strlen (attrs[i].name);
if ((size_t)(p - s) == name_len && strneq (s, attrs[i].name, name_len))
{
write_attr (&attrs[i], &attr_types, is_opt);
valid_attr = true;
break;
}
}
if (!valid_attr)
{
char *attr_invalid = xmalloc ((p - s) + 1);
STACK_VAR (attr_invalid);
strncpy (attr_invalid, s, p - s);
attr_invalid[p - s] = '\0';
vfprintf_fail ("%s attribute '%s' is not valid", desc_type[DESC_TYPE], attr_invalid);
RELEASE (attr_invalid); /* never reached */
}
}
if (*p)
p++;
}
}
static void
write_attr (const struct attr *attr_i, unsigned int *attr_types, const bool is_opt)
{
const unsigned int val = attr_i->val;
const enum attr_type attr_type = attr_i->type;
const char *attr_name = attr_i->name;
if (*attr_types & attr_type)
vfprintf_fail ("%s has attribute '%s' twice or more",
is_opt ? "--attr switch" : "attr conf option", attr_name);
snprintf (attr + strlen (attr), 3, "%u;", val);
*attr_types |= attr_type;
}
static void
process_opt_exclude_random (const char *s, const bool is_opt)
{
bool valid = false;
unsigned int i;
RELEASE (exclude);
exclude = xstrdup (s);
STACK_VAR (exclude);
for (i = 1; i < tables[GENERIC].count - 1; i++) /* skip color none and default */
{
const struct color *entry = &tables[GENERIC].entries[i];
if (streq (exclude, entry->name))
{
valid = true;
break;
}
}
if (!valid)
vfprintf_fail ("%s must be provided a plain color",
is_opt ? "--exclude-random switch" : "exclude-random conf option");
}
static void
init_opts_vars (void)
{
if (opts_set & OPT_ATTR_SET)
{
attr[0] = '\0'; /* Clear attr string to discard values from the config file. */
process_opt_attr (opts_arg.attr, true);
}
if (opts_set & OPT_EXCLUDE_RANDOM_SET)
process_opt_exclude_random (opts_arg.exclude_random, true);
if (opts_set & OPT_OMIT_COLOR_EMPTY_SET)
omit_color_empty = true;
if (opts_set & OPT_RAINBOW_FG_SET)
rainbow_fg = true;
if (opts_set & OPT_RAINBOW_BG_SET)
rainbow_bg = true;
RELEASE (opts_arg.attr);
RELEASE (opts_arg.exclude_random);
}
#define IS_SPACE(c) ((c) == ' ' || (c) == '\t')
static void
parse_conf (const char *conf_file, struct conf *config)
{
unsigned int cnt = 0;
char line[256 + 1];
FILE *conf;
conf = open_file (conf_file, "r");
STACK_FILE (conf);
while (fgets (line, sizeof (line), conf))
{
char *cfg, *val;
char *assign, *comment, *opt, *value;
char *p;
cnt++;
if ((p = strchr (line, '\r')) && *(p + 1) != '\n')
vfprintf_fail ("%s: CR ending of line %u is not supported, switch to CRLF/LF instead", conf_file, cnt);
if (strlen (line) > (sizeof (line) - 2))
vfprintf_fail ("%s: line %u exceeds maximum of %u characters", conf_file, cnt, (unsigned int)(sizeof (line) - 2));
if ((p = strpbrk (line, "\n\r")))
*p = '\0';
/* NAME PARSING (start) */
p = line;
/* skip leading spaces and tabs for name */
while (IS_SPACE (*p))
p++;
/* skip line if a) string end, b) comment, [cd]) newline */
if (*p == '\0' || *p == '#' || *p == '\n' || *p == '\r')
continue;
opt = p;
if (!(assign = strchr (opt, '='))) /* check for = */
{
char *s;
if ((s = strpbrk (opt, "# ")))
*s = '\0';
vfprintf_fail (formats[FMT_CONF], conf_file, opt, "not followed by =");
}
p = assign;
/* skip trailing spaces and tabs for name */
while (IS_SPACE (*(p - 1)))
p--;
*p = '\0';
/* NAME PARSING (end) */
/* NAME VALIDATION (start) */
for (p = opt; *p; p++)
if (!isalnum ((unsigned char)*p) && *p != '-')
vfprintf_fail (formats[FMT_CONF], conf_file, opt, "cannot be made of non-option characters");
/* NAME VALIDATION (end) */
/* VALUE PARSING (start) */
p = assign + 1;
/* skip leading spaces and tabs for value */
while (IS_SPACE (*p))
p++;
/* skip line if comment */
if (*p == '#')
continue;
value = p;
if ((comment = strchr (p, '#')))
p = comment;
else
p += strlen (p);
/* skip trailing spaces and tabs for value */
while (IS_SPACE (*(p - 1)))
p--;
*p = '\0';
/* VALUE PARSING (end) */
/* save option name */
cfg = xstrdup (opt);
STACK_VAR (cfg);
/* save option value (allow empty ones) */
val = strlen (value) ? xstrdup (value) : NULL;
STACK_VAR (val);
assign_conf (conf_file, config, cfg, val);
RELEASE (cfg);
}
RELEASE (conf);
}
#define ASSIGN_CONF(str,val) do { \
RELEASE (str); \
str = val; \
} while (false)
static void
assign_conf (const char *conf_file, struct conf *config, const char *cfg, char *val)
{
if (streq (cfg, "attr"))
ASSIGN_CONF (config->attr, val);
else if (streq (cfg, "color"))
ASSIGN_CONF (config->color, val);
else if (streq (cfg, "exclude-random"))
ASSIGN_CONF (config->exclude_random, val);
else if (streq (cfg, "omit-color-empty"))
ASSIGN_CONF (config->omit_color_empty, val);
else if (streq (cfg, "rainbow-fg"))
ASSIGN_CONF (config->rainbow_fg, val);
else if (streq (cfg, "rainbow-bg"))
ASSIGN_CONF (config->rainbow_bg, val);
else
vfprintf_fail (formats[FMT_CONF], conf_file, cfg, "not recognized");
}
static void
init_conf_vars (const char *conf_file, const struct conf *config)
{
if (config->attr)
process_opt_attr (config->attr, false);
if (config->exclude_random)
process_opt_exclude_random (config->exclude_random, false);
if (config->omit_color_empty)
init_conf_boolean (config->omit_color_empty, &omit_color_empty, "omit-color-empty", NULL);
if (config->rainbow_fg || config->rainbow_bg)
{
if (config->rainbow_fg && config->rainbow_bg)
vfprintf_fail (formats[FMT_CONF_FILE], conf_file, "rainbow-fg and rainbow-bg option are mutually exclusive");
if (config->rainbow_fg)
init_conf_boolean (config->rainbow_fg, &rainbow_fg, "rainbow-fg", &rainbow_from_conf.fg);
else if (config->rainbow_bg)
init_conf_boolean (config->rainbow_bg, &rainbow_bg, "rainbow-bg", &rainbow_from_conf.bg);
}
}
static void
init_conf_boolean (const char *conf_var, bool *boolean_var, const char *name, bool *seen_opt)
{
if (streq (conf_var, "yes"))
*boolean_var = true;
else if (streq (conf_var, "no"))
*boolean_var = false;
else
vfprintf_fail (formats[FMT_CONF_INIT], name, "conf option is not valid");
if (seen_opt)
*seen_opt = true;
}
static void
print_hint (void)
{
fprintf (stderr, "Type `%s --help' for help screen.\n", program_name);
}
static void
print_help (void)
{
struct opt_data {
const char *name;
const char *short_opt;
const char *arg;
};
const struct opt_data opts_data[] = {
{ "attr", NULL, "=ATTR1,ATTR2,..." },
{ "config", "c", "=PATH" },
{ "exclude-random", NULL, "=COLOR" },
{ "help", "h", NULL },
{ "version", "V", NULL },
};
const struct option *opt = long_opts;
unsigned int i;
printf ("Usage: %s (foreground) OR (foreground)%c(background) OR --clean[-all] [-|file]\n\n", program_name, COLOR_SEP_CHAR);
printf ("\tColors (foreground) (background)\n");
for (i = 0; i < tables[FOREGROUND].count; i++)
{
const struct color *entry = &tables[FOREGROUND].entries[i];
const char *name = entry->name;
const char *code = entry->code;
if (code)
printf ("\t\t{\033[%s#\033[0m} [%c%c]%s%*s%s\n",
code, toupper ((unsigned char)*name), *name, name + 1, 10 - (int)strlen (name), " ", name);
else
printf ("\t\t{-} %s%*s%s\n", name, 13 - (int)strlen (name), " ", name);
}
printf ("\t\t{*} [Rr]%s%*s%s [--exclude-random=<foreground color>]\n", "andom", 10 - (int)strlen ("random"), " ", "random");
printf ("\n\tFirst character of color name in upper case denotes increased intensity,\n");
printf ("\twhereas for lower case colors will be of normal intensity.\n");
printf ("\n\tOptions\n");
for (; opt->name; opt++)
{
const struct opt_data *opt_data = NULL;
unsigned int i;
for (i = 0; i < COUNT_OF (opts_data, struct opt_data); i++)
if (streq (opt->name, opts_data[i].name))
{
opt_data = &opts_data[i];
break;
}
if (opt_data)
{
if (opt_data->short_opt)
printf ("\t\t-%s, --%s", opt_data->short_opt, opt->name);
else
printf ("\t\t --%s", opt->name);
if (opt_data->arg)
printf ("%s", opt_data->arg);
printf ("\n");
}
else
printf ("\t\t --%s\n", opt->name);
}
printf ("\n");
}
static void
print_version (void)
{
#ifdef HAVE_VERSION
# include "version.h"
#else
const char *const version = NULL;
#endif
const char *version_prefix, *version_string;
const char *c_flags, *ld_flags, *cpp_flags;
const char *const desc_flags_unknown = "unknown";
struct bytes_size bytes_size;
bool debug;
#ifdef CFLAGS
c_flags = to_str (CFLAGS);
#else
c_flags = desc_flags_unknown;
#endif
#ifdef LDFLAGS
ld_flags = to_str (LDFLAGS);
#else
ld_flags = desc_flags_unknown;
#endif
#ifdef CPPFLAGS
cpp_flags = to_str (CPPFLAGS);
#else
cpp_flags = desc_flags_unknown;
#endif
#if DEBUG
debug = true;
#else
debug = false;
#endif
version_prefix = version ? "" : "v";
version_string = version ? version : VERSION;
printf ("%s %s%s (compiled at %s, %s)\n", PROGRAM_NAME, version_prefix, version_string, __DATE__, __TIME__);
printf ("Compiler flags: %s\n", c_flags);
printf ("Linker flags: %s\n", ld_flags);
printf ("Preprocessor flags: %s\n", cpp_flags);