/*
* colorize - Read text from standard input stream or file and print
* it colorized through use of ANSI escape sequences
*
* Copyright (c) 2011-2015 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 .
*
*/
#define _BSD_SOURCE
#define _XOPEN_SOURCE 700
#define _FILE_OFFSET_BITS 64
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#ifndef DEBUG
# define DEBUG 0
#endif
#define str(arg) #arg
#define to_str(arg) str(arg)
#define streq(s1, s2) (strcmp (s1, s2) == 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 SKIP_LINE_ENDINGS(flags) (((flags) & CR) && ((flags) & LF) ? 2 : 1)
#define VALID_FILE_TYPE(mode) (S_ISREG (mode) || S_ISLNK (mode) || S_ISFIFO (mode))
#define STACK_VAR(ptr) do { \
stack_var (&vars_list, &stacked_vars, stacked_vars, ptr); \
} while (false)
#define RELEASE_VAR(ptr) do { \
release_var (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 COLOR_SEP_CHAR '/'
#define DEBUG_FILE "debug.txt"
#define VERSION "0.55"
typedef enum { false, true } bool;
struct color_name {
char *name;
char *orig;
};
static struct color_name *color_names[3] = { NULL, NULL, NULL };
struct color {
const char *name;
const char *code;
};
static const struct color fg_colors[] = {
{ "none", NULL },
{ "black", "30m" },
{ "red", "31m" },
{ "green", "32m" },
{ "yellow", "33m" },
{ "blue", "34m" },
{ "magenta", "35m" },
{ "cyan", "36m" },
{ "white", "37m" },
{ "default", "39m" },
};
static const struct color bg_colors[] = {
{ "none", NULL },
{ "black", "40m" },
{ "red", "41m" },
{ "green", "42m" },
{ "yellow", "43m" },
{ "blue", "44m" },
{ "magenta", "45m" },
{ "cyan", "46m" },
{ "white", "47m" },
{ "default", "49m" },
};
struct bytes_size {
unsigned int size;
char unit;
};
enum fmts {
FMT_GENERIC,
FMT_STRING,
FMT_QUOTE,
FMT_COLOR,
FMT_RANDOM,
FMT_ERROR,
FMT_FILE,
FMT_TYPE
};
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 %u bytes %s", /* error */
"%s: %s", /* file */
"%s: %s: %s", /* type */
};
enum { FOREGROUND, BACKGROUND };
static const struct {
struct color const *entries;
unsigned int count;
const char *desc;
} tables[] = {
{ fg_colors, sizeof (fg_colors) / sizeof (struct color), "foreground" },
{ bg_colors, sizeof (bg_colors) / sizeof (struct color), "background" },
};
static FILE *stream = NULL;
#if DEBUG
static FILE *log = NULL;
#endif
static unsigned int stacked_vars = 0;
static void **vars_list = NULL;
static bool clean = false;
static bool clean_all = false;
static char *exclude = NULL;
static const char *program_name;
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 process_args (unsigned int, char **, bool *, const struct color **, const char **, FILE **);
static void process_file_arg (const char *, const char **, FILE **);
static void read_print_stream (bool, const struct color **, const char *, FILE *);
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 (bool, const struct color **, const char * const, unsigned int);
static void print_clean (const char *);
static void print_free_offsets (const char *, char ***, unsigned int);
#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 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_var (void ***, unsigned int *, unsigned int, void *);
static void release_var (void **, unsigned int, void **);
#define SET_OPT_TYPE(type) \
opt_type = type; \
opt = 0; \
goto PARSE_OPT; \
extern char *optarg;
extern int optind;
static int opt_type = 0;
int
main (int argc, char **argv)
{
unsigned int arg_cnt = 0;
enum {
OPT_CLEAN = 1,
OPT_CLEAN_ALL,
OPT_EXCLUDE_RANDOM,
OPT_HELP,
OPT_VERSION
};
int opt;
struct option long_opts[] = {
{ "clean", no_argument, &opt_type, OPT_CLEAN },
{ "clean-all", no_argument, &opt_type, OPT_CLEAN_ALL },
{ "exclude-random", required_argument, &opt_type, OPT_EXCLUDE_RANDOM },
{ "help", no_argument, &opt_type, OPT_HELP },
{ "version", no_argument, &opt_type, OPT_VERSION },
{ NULL, 0, NULL, 0 },
};
bool bold = false;
const struct color *colors[2] = {
NULL, /* foreground */
NULL, /* background */
};
const char *file = NULL;
program_name = argv[0];
atexit (cleanup);
setvbuf (stdout, NULL, _IOLBF, 0);
#if DEBUG
log = open_file (DEBUG_FILE, "w");
#endif
while ((opt = getopt_long (argc, argv, "hv", long_opts, NULL)) != -1)
{
PARSE_OPT:
switch (opt)
{
case 0: /* long opts */
switch (opt_type)
{
case OPT_CLEAN:
clean = true;
break;
case OPT_CLEAN_ALL:
clean_all = true;
break;
case OPT_EXCLUDE_RANDOM: {
bool valid = false;
unsigned int i;
exclude = xstrdup (optarg);
STACK_VAR (exclude);
for (i = 1; i < tables[FOREGROUND].count - 1; i++) /* skip color none and default */
{
const struct color *entry = &tables[FOREGROUND].entries[i];
if (streq (exclude, entry->name))
{
valid = true;
break;
}
}
if (!valid)
vfprintf_fail (formats[FMT_GENERIC], "--exclude-random switch must be provided a plain color");
break;
}
case OPT_HELP:
print_help ();
exit (EXIT_SUCCESS);
case OPT_VERSION:
print_version ();
exit (EXIT_SUCCESS);
default: /* never reached */
ABORT_TRACE ();
}
break;
case 'h':
SET_OPT_TYPE (OPT_HELP);
case 'v':
SET_OPT_TYPE (OPT_VERSION);
case '?':
print_hint ();
exit (EXIT_FAILURE);
default: /* never reached */
ABORT_TRACE ();
}
}
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)
{
const char *format = "%s %s";
const char *message = "switch cannot be used with more than one file";
if (clean)
vfprintf_fail (format, "--clean", message);
else if (clean_all)
vfprintf_fail (format, "--clean-all", message);
}
}
else
{
if (arg_cnt == 0 || arg_cnt > 2)
{
vfprintf_diag ("%u arguments provided, expected 1-2 arguments or clean option", 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], &bold, colors, &file, &stream);
read_print_stream (bold, colors, file, stream);
RELEASE_VAR (exclude);
exit (EXIT_SUCCESS);
}
static void
print_hint (void)
{
fprintf (stderr, "Type `%s --help' for help screen.\n", program_name);
}
static void
print_help (void)
{
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 (*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=]\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");
printf ("\t\t --clean\n");
printf ("\t\t --clean-all\n");
printf ("\t\t --exclude-random\n");
printf ("\t\t-h, --help\n");
printf ("\t\t-v, --version\n\n");
}
static void
print_version (void)
{
#ifdef HAVE_VERSION
# include "version.h"
#else
const char *version = NULL;
#endif
const char *version_prefix, *version_string;
const char *c_flags;
struct bytes_size bytes_size;
bool debug;
#ifdef CFLAGS
c_flags = to_str (CFLAGS);
#else
c_flags = "unknown";
#endif
#if DEBUG
debug = true;
#else
debug = false;
#endif
version_prefix = version ? "" : "v";
version_string = version ? version : VERSION;
printf ("colorize %s%s (compiled at %s, %s)\n", version_prefix, version_string, __DATE__, __TIME__);
printf ("Compiler flags: %s\n", c_flags);
if (get_bytes_size (BUF_SIZE, &bytes_size))
{
if (BUF_SIZE % 1024 == 0)
printf ("Buffer size: %u%c\n", bytes_size.size, bytes_size.unit);
else
printf ("Buffer size: %u%c, %u byte%s\n", bytes_size.size, bytes_size.unit,
BUF_SIZE % 1024, BUF_SIZE % 1024 > 1 ? "s" : "");
}
else
printf ("Buffer size: %lu byte%s\n", (unsigned long)BUF_SIZE, BUF_SIZE > 1 ? "s" : "");
printf ("Debugging: %s\n", debug ? "yes" : "no");
}
static void
cleanup (void)
{
free_color_names (color_names);
if (stream && fileno (stream) != STDIN_FILENO)
fclose (stream);
#if DEBUG
if (log)
fclose (log);
#endif
if (vars_list)
{
unsigned int i;
for (i = 0; i < stacked_vars; i++)
if (vars_list[i])
free_null (vars_list[i]);
free_null (vars_list);
}
}
static void
free_color_names (struct color_name **color_names)
{
unsigned int i;
for (i = 0; color_names[i]; i++)
{
free_null (color_names[i]->name);
free_null (color_names[i]->orig);
free_null (color_names[i]);
}
}
static void
process_args (unsigned int arg_cnt, char **arg_strings, bool *bold, const struct color **colors, const char **file, FILE **stream)
{
int ret;
unsigned int index;
char *color, *p, *str;
struct stat sb;
const char *color_string = arg_cnt >= 1 ? arg_strings[0] : NULL;
const char *file_string = arg_cnt == 2 ? arg_strings[1] : NULL;
assert (color_string);
if (streq (color_string, "-"))
{
if (file_string)
vfprintf_fail (formats[FMT_GENERIC], "hyphen cannot be used as color string");
else
vfprintf_fail (formats[FMT_GENERIC], "hyphen must be preceeded by color string");
}
ret = lstat (color_string, &sb);
/* Ensure that we don't fail if there's a file with one or more
color names in its path. */
if (ret == 0) /* success */
{
bool have_file;
unsigned int c;
const char *color = color_string;
const mode_t mode = sb.st_mode;
for (c = 1; c <= 2 && *color; c++)
{
bool matched = false;
unsigned int i;
for (i = 0; i < tables[FOREGROUND].count; i++)
{
const struct color *entry = &tables[FOREGROUND].entries[i];
if (has_color_name (color, entry->name))
{
color += strlen (entry->name);
matched = true;
break;
}
}
if (!matched && has_color_name (color, "random"))
{
color += strlen ("random");
matched = true;
}
if (matched && *color == COLOR_SEP_CHAR && *(color + 1))
color++;
else
break;
}
have_file = (*color != '\0');
if (have_file)
{
const char *file_exists = color_string;
if (file_string)
vfprintf_fail (formats[FMT_QUOTE], get_file_type (mode), file_exists, "cannot be used as color string");
else
{
if (VALID_FILE_TYPE (mode))
vfprintf_fail (formats[FMT_QUOTE], get_file_type (mode), file_exists, "must be preceeded by color string");
else
vfprintf_fail (formats[FMT_QUOTE], get_file_type (mode), file_exists, "is not a valid file type");
}
}
}
if ((p = strchr (color_string, COLOR_SEP_CHAR)))
{
if (p == color_string)
vfprintf_fail (formats[FMT_STRING], "foreground color missing in string", color_string);
else if (p == color_string + strlen (color_string) - 1)
vfprintf_fail (formats[FMT_STRING], "background color missing in string", color_string);
else if (strchr (++p, COLOR_SEP_CHAR))
vfprintf_fail (formats[FMT_STRING], "one color pair allowed only for string", color_string);
}
str = xstrdup (color_string);
STACK_VAR (str);
for (index = 0, color = str; *color; index++, color = p)
{
char *ch, *sep;
p = NULL;
if ((sep = strchr (color, COLOR_SEP_CHAR)))
{
*sep = '\0';
p = sep + 1;
}
else
p = color + strlen (color);
assert (p);
for (ch = color; *ch; ch++)
if (!isalpha (*ch))
vfprintf_fail (formats[FMT_COLOR], tables[index].desc, color, "cannot be made of non-alphabetic characters");
for (ch = color + 1; *ch; ch++)
if (!islower (*ch))
vfprintf_fail (formats[FMT_COLOR], tables[index].desc, color, "cannot be in mixed lower/upper case");
if (streq (color, "None"))
vfprintf_fail (formats[FMT_COLOR], tables[index].desc, color, "cannot be bold");
if (isupper (*color))
{
switch (index)
{
case FOREGROUND:
*bold = true;
break;
case BACKGROUND:
vfprintf_fail (formats[FMT_COLOR], tables[BACKGROUND].desc, color, "cannot be bold");
break;
default: /* never reached */
ABORT_TRACE ();
}
}
color_names[index] = xcalloc (1, sizeof (struct color_name));
color_names[index]->orig = xstrdup (color);
for (ch = color; *ch; ch++)
*ch = tolower (*ch);
color_names[index]->name = xstrdup (color);
}
RELEASE_VAR (str);
assert (color_names[FOREGROUND]);
if (color_names[BACKGROUND])
{
unsigned int i;
unsigned int color_sets[2][2] = { { FOREGROUND, BACKGROUND }, { BACKGROUND, FOREGROUND } };
for (i = 0; i < 2; i++)
{
unsigned int color1 = color_sets[i][0];
unsigned int color2 = color_sets[i][1];
if (CHECK_COLORS_RANDOM (color1, color2))
vfprintf_fail (formats[FMT_RANDOM], tables[color1].desc, color_names[color1]->orig, "cannot be combined with", color_names[color2]->orig);
}
}
find_color_entries (color_names, colors);
free_color_names (color_names);
if (!colors[FOREGROUND]->code && colors[BACKGROUND] && colors[BACKGROUND]->code)
{
struct color_name color_name;
color_name.name = color_name.orig = "default";
find_color_entry (&color_name, FOREGROUND, colors);
}
process_file_arg (file_string, file, stream);
}
static void
process_file_arg (const char *file_string, const char **file, FILE **stream)
{
if (file_string)
{
if (streq (file_string, "-"))
*stream = stdin;
else
{
FILE *s;
const char *file = file_string;
struct stat sb;
int ret;
errno = 0;
ret = lstat (file, &sb);
if (ret == -1)
vfprintf_fail (formats[FMT_FILE], file, strerror (errno));
if (!VALID_FILE_TYPE (sb.st_mode))
vfprintf_fail (formats[FMT_TYPE], file, "unrecognized type", get_file_type (sb.st_mode));
errno = 0;
s = fopen (file, "r");
if (!s)
vfprintf_fail (formats[FMT_FILE], file, strerror (errno));
*stream = s;
}
*file = file_string;
}
else
{
*stream = stdin;
*file = "stdin";
}
assert (*stream);
assert (*file);
}
#define MERGE_PRINT_LINE(part_line, line, flags, check_eof) do { \
char *current_line, *merged_line = NULL; \
if (part_line) \
{ \
merged_line = str_concat (part_line, line); \
free_null (part_line); \
} \
current_line = merged_line ? merged_line : (char *)line; \
if (!check_eof || *current_line != '\0') \
print_line (bold, colors, current_line, flags); \
free (merged_line); \
} while (false)
static void
read_print_stream (bool bold, const struct color **colors, const char *file, FILE *stream)
{
char buf[BUF_SIZE + 1], *part_line = NULL;
unsigned int flags = 0;
while (!feof (stream))
{
size_t bytes_read;
char *eol;
const char *line;
memset (buf, '\0', BUF_SIZE + 1);
bytes_read = fread (buf, 1, BUF_SIZE, stream);
if (bytes_read != BUF_SIZE && ferror (stream))
vfprintf_fail (formats[FMT_ERROR], BUF_SIZE, "read");
line = buf;
while ((eol = strpbrk (line, "\n\r")))
{
char *p;
flags &= ~(CR|LF);
if (*eol == '\r')
{
flags |= CR;
if (*(eol + 1) == '\n')
flags |= LF;
}
else if (*eol == '\n')
flags |= LF;
else
vfprintf_fail (formats[FMT_FILE], file, "unrecognized line ending");
p = eol + SKIP_LINE_ENDINGS (flags);
*eol = '\0';
MERGE_PRINT_LINE (part_line, line, flags, false);
line = p;
}
if (feof (stream)) {
MERGE_PRINT_LINE (part_line, line, 0, true);
}
else if (*line != '\0')
{
if (!clean && !clean_all) /* efficiency */
print_line (bold, colors, line, 0);
else if (!part_line)
part_line = xstrdup (line);
else
{
char *merged_line = str_concat (part_line, line);
free (part_line);
part_line = merged_line;
}
}
}
}
static void
find_color_entries (struct color_name **color_names, const struct color **colors)
{
struct timeval tv;
unsigned int index;
/* randomness */
gettimeofday (&tv, NULL);
srand (tv.tv_usec * tv.tv_sec);
for (index = 0; color_names[index]; index++)
{
const char *color_name = color_names[index]->name;
const unsigned int count = tables[index].count;
const struct color *const color_entries = tables[index].entries;
if (streq (color_name, "random"))
{
bool excludable;
unsigned int i;
do {
excludable = false;
i = rand() % (count - 2) + 1; /* omit color none and default */
switch (index)
{
case FOREGROUND:
/* --exclude-random */
if (exclude && streq (exclude, color_entries[i].name))
excludable = true;
else if (color_names[BACKGROUND] && streq (color_names[BACKGROUND]->name, color_entries[i].name))
excludable = true;
break;
case BACKGROUND:
if (streq (colors[FOREGROUND]->name, color_entries[i].name))
excludable = true;
break;
default: /* never reached */
ABORT_TRACE ();
}
} while (excludable);
colors[index] = (struct color *)&color_entries[i];
}
else
find_color_entry (color_names[index], index, colors);
}
}
static void
find_color_entry (const struct color_name *color_name, unsigned int index, const struct color **colors)
{
bool found = false;
unsigned int i;
const unsigned int count = tables[index].count;
const struct color *const color_entries = tables[index].entries;
for (i = 0; i < count; i++)
if (streq (color_name->name, color_entries[i].name))
{
colors[index] = (struct color *)&color_entries[i];
found = true;
break;
}
if (!found)
vfprintf_fail (formats[FMT_COLOR], tables[index].desc, color_name->orig, "not recognized");
}
static void
print_line (bool bold, const struct color **colors, const char *const line, unsigned int flags)
{
/* --clean[-all] */
if (clean || clean_all)
print_clean (line);
else
{
/* Foreground color code is guaranteed to be set when background color code is present. */
if (colors[BACKGROUND] && colors[BACKGROUND]->code)
printf ("\033[%s", colors[BACKGROUND]->code);
if (colors[FOREGROUND]->code)
printf ("\033[%s%s%s\033[0m", bold ? "1;" : "", colors[FOREGROUND]->code, line);
else
printf (formats[FMT_GENERIC], line);
}
if (flags & CR)
putchar ('\r');
if (flags & LF)
putchar ('\n');
}
static void
print_clean (const char *line)
{
const char *p;
char ***offsets = NULL;
unsigned int count = 0, i = 0;
for (p = line; *p;)
{
/* ESC[ */
if (*p == 27 && *(p + 1) == '[')
{
const char *begin = p;
p += 2;
if (clean_all)
{
while (isdigit (*p) || *p == ';')
p++;
}
else if (clean)
{
bool check_values;
unsigned int iter = 0;
const char *digit;
do {
check_values = false;
iter++;
if (!isdigit (*p))
goto DISCARD;
digit = p;
while (isdigit (*p))
p++;
if (p - digit > 2)
goto DISCARD;
else /* check range */
{
char val[3];
int value;
unsigned int i;
const unsigned int digits = p - digit;
for (i = 0; i < digits; i++)
val[i] = *digit++;
val[i] = '\0';
value = atoi (val);
if (value == 0) /* reset */
{
if (iter > 1)
goto DISCARD;
goto END;
}
else if (value == 1) /* bold */
{
bool discard = false;
if (iter > 1)
discard = true;
else if (*p != ';')
discard = true;
if (discard)
goto DISCARD;
p++;
check_values = true;
}
else if ((value >= 30 && value <= 37) || value == 39) /* foreground colors */
goto END;
else if ((value >= 40 && value <= 47) || value == 49) /* background colors */
{
if (iter > 1)
goto DISCARD;
goto END;
}
else
goto DISCARD;
}
} while (iter == 1 && check_values);
}
END: if (*p == 'm')
{
const char *end = p++;
if (!offsets)
offsets = xmalloc (++count * sizeof (char **));
else
offsets = xrealloc (offsets, ++count * sizeof (char **));
offsets[i] = xmalloc (2 * sizeof (char *));
offsets[i][0] = (char *)begin; /* ESC */
offsets[i][1] = (char *)end; /* m */
i++;
continue;
}
DISCARD:
continue;
}
p++;
}
if (offsets)
print_free_offsets (line, offsets, count);
else
printf (formats[FMT_GENERIC], line);
}
#define SET_CHAR(offset, new, old) \
*old = *offset; \
*offset = new; \
#define RESTORE_CHAR(offset, old) \
*offset = old; \
static void
print_free_offsets (const char *line, char ***offsets, unsigned int count)
{
char ch;
unsigned int i;
SET_CHAR (offsets[0][0], '\0', &ch);
printf (formats[FMT_GENERIC], line);
RESTORE_CHAR (offsets[0][0], ch);
for (i = 0; i < count; i++)
{
char ch;
bool next_offset = false;
if (i + 1 < count)
{
SET_CHAR (offsets[i + 1][0], '\0', &ch);
next_offset = true;
}
printf (formats[FMT_GENERIC], offsets[i][1] + 1);
if (next_offset)
RESTORE_CHAR (offsets[i + 1][0], ch);
}
for (i = 0; i < count; i++)
free_null (offsets[i]);
free_null (offsets);
}
#if !DEBUG
static void *
malloc_wrap (size_t size)
{
void *p = malloc (size);
if (!p)
MEM_ALLOC_FAIL ();
return p;
}
static void *
calloc_wrap (size_t nmemb, size_t size)
{
void *p = calloc (nmemb, size);
if (!p)
MEM_ALLOC_FAIL ();
return p;
}
static void *
realloc_wrap (void *ptr, size_t size)
{
void *p = realloc (ptr, size);
if (!p)
MEM_ALLOC_FAIL ();
return p;
}
#else
static void *
malloc_wrap_debug (size_t size, const char *file, unsigned int line)
{
void *p = malloc (size);
if (!p)
MEM_ALLOC_FAIL_DEBUG (file, line);
fprintf (log, "%s: malloc'ed %lu bytes [source file %s, line %u]\n", program_name, (unsigned long)size, file, line);
return p;
}
static void *
calloc_wrap_debug (size_t nmemb, size_t size, const char *file, unsigned int line)
{
void *p = calloc (nmemb, size);
if (!p)
MEM_ALLOC_FAIL_DEBUG (file, line);
fprintf (log, "%s: calloc'ed %lu bytes [source file %s, line %u]\n", program_name, (unsigned long)(nmemb * size), file, line);
return p;
}
static void *
realloc_wrap_debug (void *ptr, size_t size, const char *file, unsigned int line)
{
void *p = realloc (ptr, size);
if (!p)
MEM_ALLOC_FAIL_DEBUG (file, line);
fprintf (log, "%s: realloc'ed %lu bytes [source file %s, line %u]\n", program_name, (unsigned long)size, file, line);
return p;
}
#endif /* !DEBUG */
static void
free_wrap (void **ptr)
{
free (*ptr);
*ptr = NULL;
}
#if !DEBUG
# define do_malloc(len, file, line) malloc_wrap(len)
#else
# define do_malloc(len, file, line) malloc_wrap_debug(len, file, line)
#endif
static char *
strdup_wrap (const char *str, const char *file, unsigned int line)
{
const size_t len = strlen (str) + 1;
char *p = do_malloc (len, file, line);
strncpy (p, str, len);
return p;
}
static char *
str_concat_wrap (const char *str1, const char *str2, const char *file, unsigned int line)
{
const size_t len = strlen (str1) + strlen (str2) + 1;
char *p, *str;
p = str = do_malloc (len, file, line);
strncpy (p, str1, strlen (str1));
p += strlen (str1);
strncpy (p, str2, strlen (str2));
p += strlen (str2);
*p = '\0';
return str;
}
static bool
get_bytes_size (unsigned long bytes, struct bytes_size *bytes_size)
{
const char *unit, units[] = { '0', 'K', 'M', 'G', '\0' };
unsigned long size = bytes;
if (bytes < 1024)
return false;
unit = units;
while (size >= 1024 && *(unit + 1))
{
size /= 1024;
unit++;
}
bytes_size->size = (unsigned int)size;
bytes_size->unit = *unit;
return true;
}
static char *
get_file_type (mode_t mode)
{
if (S_ISREG (mode))
return "file";
else if (S_ISDIR (mode))
return "directory";
else if (S_ISCHR (mode))
return "character device";
else if (S_ISBLK (mode))
return "block device";
else if (S_ISFIFO (mode))
return "named pipe";
else if (S_ISLNK (mode))
return "symbolic link";
else if (S_ISSOCK (mode))
return "socket";
else
return "file";
}
static bool
has_color_name (const char *str, const char *name)
{
char *p;
assert (strlen (str));
assert (strlen (name));
if (!(*str == *name || *str == toupper (*name)))
return false;
else if (*(name + 1) != '\0'
&& !((p = strstr (str + 1, name + 1)) && p == str + 1))
return false;
return true;
}
static FILE *
open_file (const char *file, const char *mode)
{
FILE *stream;
errno = 0;
stream = fopen (file, mode);
if (!stream)
vfprintf_fail (formats[FMT_FILE], file, strerror (errno));
return stream;
}
#define DO_VFPRINTF(fmt) \
va_list ap; \
fprintf (stderr, "%s: ", program_name); \
va_start (ap, fmt); \
vfprintf (stderr, fmt, ap); \
va_end (ap); \
fprintf (stderr, "\n"); \
static void
vfprintf_diag (const char *fmt, ...)
{
DO_VFPRINTF (fmt);
}
static void
vfprintf_fail (const char *fmt, ...)
{
DO_VFPRINTF (fmt);
exit (EXIT_FAILURE);
}
static void
stack_var (void ***list, unsigned int *stacked, unsigned int index, void *ptr)
{
/* nothing to stack */
if (ptr == NULL)
return;
if (!*list)
*list = xmalloc (sizeof (void *));
else
{
unsigned int i;
for (i = 0; i < *stacked; i++)
if (!(*list)[i])
{
(*list)[i] = ptr;
return; /* reused */
}
*list = xrealloc (*list, (*stacked + 1) * sizeof (void *));
}
(*list)[index] = ptr;
(*stacked)++;
}
static void
release_var (void **list, unsigned int stacked, void **ptr)
{
unsigned int i;
/* nothing to release */
if (*ptr == NULL)
return;
for (i = 0; i < stacked; i++)
if (list[i] == *ptr)
{
free (*ptr);
*ptr = NULL;
list[i] = NULL;
return;
}
}