]>
git.refcnt.org Git - colorize.git/blob - colorize.c
2 * colorize - Read text from standard input stream or file and print
3 * it colorized through use of ANSI escape sequences
5 * Copyright (c) 2011-2018 Steven Schubiger
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #define _DEFAULT_SOURCE
24 #define _XOPEN_SOURCE 700
25 #define _FILE_OFFSET_BITS 64
35 #include <sys/types.h>
45 #define to_str(arg) str(arg)
47 #define streq(s1, s2) (strcmp (s1, s2) == 0)
48 #define strneq(s1, s2, n) (strncmp (s1, s2, n) == 0)
51 # define xmalloc(size) malloc_wrap(size)
52 # define xcalloc(nmemb, size) calloc_wrap(nmemb, size)
53 # define xrealloc(ptr, size) realloc_wrap(ptr, size)
54 # define xstrdup(str) strdup_wrap(str, NULL, 0)
55 # define str_concat(str1, str2) str_concat_wrap(str1, str2, NULL, 0)
57 # define xmalloc(size) malloc_wrap_debug(size, __FILE__, __LINE__)
58 # define xcalloc(nmemb, size) calloc_wrap_debug(nmemb, size, __FILE__, __LINE__)
59 # define xrealloc(ptr, size) realloc_wrap_debug(ptr, size, __FILE__, __LINE__)
60 # define xstrdup(str) strdup_wrap(str, __FILE__, __LINE__)
61 # define str_concat(str1, str2) str_concat_wrap(str1, str2, __FILE__, __LINE__)
64 #define free_null(ptr) free_wrap((void **)&ptr)
66 #if defined(BUF_SIZE) && (BUF_SIZE <= 0 || BUF_SIZE > 65536)
70 # define BUF_SIZE 4096
76 #define COUNT_OF(obj, type) (sizeof (obj) / sizeof (type))
78 #define SKIP_LINE_ENDINGS(flags) ((flags) == (CR|LF) ? 2 : 1)
80 #define VALID_FILE_TYPE(mode) (S_ISREG (mode) || S_ISLNK (mode) || S_ISFIFO (mode))
82 #define STACK_VAR(ptr) do { \
83 stack_var (&vars_list, &stacked_vars, stacked_vars, ptr); \
86 #define RELEASE_VAR(ptr) do { \
87 release_var (vars_list, stacked_vars, (void **)&ptr); \
91 # define MEM_ALLOC_FAIL() do { \
92 fprintf (stderr, "%s: memory allocation failure\n", program_name); \
93 exit (EXIT_FAILURE); \
96 # define MEM_ALLOC_FAIL_DEBUG(file, line) do { \
97 fprintf (stderr, "Memory allocation failure in source file %s, line %u\n", file, line); \
98 exit (EXIT_FAILURE); \
102 #define ABORT_TRACE() \
103 fprintf (stderr, "Aborting in source file %s, line %u\n", __FILE__, __LINE__); \
106 #define CHECK_COLORS_RANDOM(color1, color2) \
107 streq (color_names[color1]->name, "random") \
108 && (streq (color_names[color2]->name, "none") \
109 || streq (color_names[color2]->name, "default"))
111 #define ALLOC_COMPLETE_PART_LINE 8
113 #if defined(COLOR_SEP_CHAR_COLON)
114 # define COLOR_SEP_CHAR ':'
115 #elif defined(COLOR_SEP_CHAR_SLASH)
116 # define COLOR_SEP_CHAR '/'
118 # define COLOR_SEP_CHAR '/'
122 # define DEBUG_FILE "debug.txt"
125 #define MAX_ATTRIBUTE_CHARS (6 * 2)
127 #define PROGRAM_NAME "colorize"
129 #define VERSION "0.64"
131 typedef enum { false, true } bool;
143 static const struct color fg_colors
[] = {
150 { "magenta", "35m" },
153 { "default", "39m" },
155 static const struct color bg_colors
[] = {
162 { "magenta", "45m" },
165 { "default", "49m" },
183 static const char *formats
[] = {
185 "%s '%s'", /* string */
186 "%s `%s' %s", /* quote */
187 "%s color '%s' %s", /* color */
188 "%s color '%s' %s '%s'", /* random */
189 "less than %lu bytes %s", /* error */
191 "%s: %s: %s", /* type */
194 enum { GENERIC
, FOREGROUND
= 0, BACKGROUND
};
196 static const struct {
197 const struct color
*entries
;
201 { fg_colors
, COUNT_OF (fg_colors
, struct color
), "foreground" },
202 { bg_colors
, COUNT_OF (bg_colors
, struct color
), "background" },
210 OPT_OMIT_COLOR_EMPTY
,
215 static const struct option long_opts
[] = {
216 { "attr", required_argument
, &opt_type
, OPT_ATTR
},
217 { "clean", no_argument
, &opt_type
, OPT_CLEAN
},
218 { "clean-all", no_argument
, &opt_type
, OPT_CLEAN_ALL
},
219 { "exclude-random", required_argument
, &opt_type
, OPT_EXCLUDE_RANDOM
},
220 { "omit-color-empty", no_argument
, &opt_type
, OPT_OMIT_COLOR_EMPTY
},
221 { "help", no_argument
, &opt_type
, OPT_HELP
},
222 { "version", no_argument
, &opt_type
, OPT_VERSION
},
223 { NULL
, 0, NULL
, 0 },
228 ATTR_UNDERSCORE
= 0x02,
231 ATTR_CONCEALED
= 0x10
244 static unsigned int stacked_vars
;
245 static void **vars_list
;
248 static bool clean_all
;
249 static bool omit_color_empty
;
251 static char attr
[MAX_ATTRIBUTE_CHARS
+ 1];
252 static char *exclude
;
254 static const char *program_name
;
256 static void print_tstamp (FILE *);
257 static void process_opts (int, char **);
258 static void process_opt_attr (const char *);
259 static void write_attr (const struct attr
*, unsigned int *);
260 static void print_hint (void);
261 static void print_help (void);
262 static void print_version (void);
263 static void cleanup (void);
264 static void free_color_names (struct color_name
**);
265 static void process_args (unsigned int, char **, char *, const struct color
**, const char **, FILE **);
266 static void process_file_arg (const char *, const char **, FILE **);
267 static void skip_path_colors (const char *, const char *, const struct stat
*);
268 static void gather_color_names (const char *, char *, struct color_name
**);
269 static void read_print_stream (const char *, const struct color
**, const char *, FILE *);
270 static void merge_print_line (const char *, const char *, FILE *);
271 static void complete_part_line (const char *, char **, FILE *);
272 static bool get_next_char (char *, const char **, FILE *, bool *);
273 static void save_char (char, char **, size_t *, size_t *);
274 static void find_color_entries (struct color_name
**, const struct color
**);
275 static void find_color_entry (const struct color_name
*, unsigned int, const struct color
**);
276 static void print_line (const char *, const struct color
**, const char * const, unsigned int, bool);
277 static void print_clean (const char *);
278 static bool is_esc (const char *);
279 static const char *get_end_of_esc (const char *);
280 static const char *get_end_of_text (const char *);
281 static void print_text (const char *, size_t);
282 static bool gather_esc_offsets (const char *, const char **, const char **);
283 static bool validate_esc_clean_all (const char **);
284 static bool validate_esc_clean (int, unsigned int, unsigned int *, const char **, bool *);
285 static bool is_reset (int, unsigned int, const char **);
286 static bool is_attr (int, unsigned int, unsigned int, const char **);
287 static bool is_fg_color (int, const char **);
288 static bool is_bg_color (int, unsigned int, const char **);
290 static void *malloc_wrap (size_t);
291 static void *calloc_wrap (size_t, size_t);
292 static void *realloc_wrap (void *, size_t);
294 static void *malloc_wrap_debug (size_t, const char *, unsigned int);
295 static void *calloc_wrap_debug (size_t, size_t, const char *, unsigned int);
296 static void *realloc_wrap_debug (void *, size_t, const char *, unsigned int);
298 static void free_wrap (void **);
299 static char *strdup_wrap (const char *, const char *, unsigned int);
300 static char *str_concat_wrap (const char *, const char *, const char *, unsigned int);
301 static bool get_bytes_size (unsigned long, struct bytes_size
*);
302 static char *get_file_type (mode_t
);
303 static bool has_color_name (const char *, const char *);
304 static FILE *open_file (const char *, const char *);
305 static void vfprintf_diag (const char *, ...);
306 static void vfprintf_fail (const char *, ...);
307 static void stack_var (void ***, unsigned int *, unsigned int, void *);
308 static void release_var (void **, unsigned int, void **);
313 main (int argc
, char **argv
)
315 unsigned int arg_cnt
;
317 const struct color
*colors
[2] = {
318 NULL
, /* foreground */
319 NULL
, /* background */
322 const char *file
= NULL
;
324 program_name
= argv
[0];
327 setvbuf (stdout
, NULL
, _IOLBF
, 0);
330 log
= open_file (DEBUG_FILE
, "w");
336 process_opts (argc
, argv
);
338 arg_cnt
= argc
- optind
;
340 if (clean
|| clean_all
)
342 if (clean
&& clean_all
)
343 vfprintf_fail (formats
[FMT_GENERIC
], "--clean and --clean-all switch are mutually exclusive");
346 const char *const format
= "%s %s";
347 const char *const message
= "switch cannot be used with more than one file";
349 vfprintf_fail (format
, "--clean", message
);
351 vfprintf_fail (format
, "--clean-all", message
);
356 if (arg_cnt
== 0 || arg_cnt
> 2)
358 vfprintf_diag ("%u arguments provided, expected 1-2 arguments or clean option", arg_cnt
);
364 if (clean
|| clean_all
)
365 process_file_arg (argv
[optind
], &file
, &stream
);
367 process_args (arg_cnt
, &argv
[optind
], &attr
[0], colors
, &file
, &stream
);
368 read_print_stream (&attr
[0], colors
, file
, stream
);
370 RELEASE_VAR (exclude
);
376 print_tstamp (FILE *log
)
387 perror ("localtime");
390 written
= strftime (str
, sizeof (str
), "%Y-%m-%d %H:%M:%S %Z", tm
);
392 vfprintf_fail (formats
[FMT_GENERIC
], "strftime: 0 returned");
394 fprintf (log
, "%s\n", str
);
400 #define PRINT_HELP_EXIT() \
404 #define PRINT_VERSION_EXIT() \
411 process_opts (int argc
, char **argv
)
414 while ((opt
= getopt_long (argc
, argv
, "hV", long_opts
, NULL
)) != -1)
418 case 0: /* long opts */
422 process_opt_attr (optarg
);
430 case OPT_EXCLUDE_RANDOM
: {
433 exclude
= xstrdup (optarg
);
435 for (i
= 1; i
< tables
[GENERIC
].count
- 1; i
++) /* skip color none and default */
437 const struct color
*entry
= &tables
[GENERIC
].entries
[i
];
438 if (streq (exclude
, entry
->name
))
445 vfprintf_fail (formats
[FMT_GENERIC
], "--exclude-random switch must be provided a plain color");
448 case OPT_OMIT_COLOR_EMPTY
:
449 omit_color_empty
= true;
454 PRINT_VERSION_EXIT ();
455 default: /* never reached */
462 PRINT_VERSION_EXIT ();
466 default: /* never reached */
473 process_opt_attr (const char *p
)
475 /* If attributes are added to this "list", also increase MAX_ATTRIBUTE_CHARS! */
476 const struct attr attrs
[] = {
477 { "bold", 1, ATTR_BOLD
},
478 { "underscore", 4, ATTR_UNDERSCORE
},
479 { "blink", 5, ATTR_BLINK
},
480 { "reverse", 7, ATTR_REVERSE
},
481 { "concealed", 8, ATTR_CONCEALED
},
483 unsigned int attr_types
= 0;
489 vfprintf_fail (formats
[FMT_GENERIC
], "--attr switch must be provided a string");
493 if (*p
!= '\0' && *p
!= ',')
494 vfprintf_fail (formats
[FMT_GENERIC
], "--attr switch must have strings separated by ,");
497 bool valid_attr
= false;
499 for (i
= 0; i
< COUNT_OF (attrs
, struct attr
); i
++)
501 const size_t name_len
= strlen (attrs
[i
].name
);
502 if ((size_t)(p
- s
) == name_len
&& strneq (s
, attrs
[i
].name
, name_len
))
504 write_attr (&attrs
[i
], &attr_types
);
511 char *attr_invalid
= xmalloc ((p
- s
) + 1);
512 STACK_VAR (attr_invalid
);
513 strncpy (attr_invalid
, s
, p
- s
);
514 attr_invalid
[p
- s
] = '\0';
515 vfprintf_fail ("--attr switch attribute '%s' is not valid", attr_invalid
);
516 RELEASE_VAR (attr_invalid
); /* never reached */
525 write_attr (const struct attr
*attr_i
, unsigned int *attr_types
)
527 const unsigned int val
= attr_i
->val
;
528 const enum attr_type attr_type
= attr_i
->type
;
529 const char *attr_name
= attr_i
->name
;
531 if (*attr_types
& attr_type
)
532 vfprintf_fail ("--attr switch has attribute '%s' twice or more", attr_name
);
533 snprintf (attr
+ strlen (attr
), 3, "%u;", val
);
534 *attr_types
|= attr_type
;
540 fprintf (stderr
, "Type `%s --help' for help screen.\n", program_name
);
548 const char *short_opt
;
551 const struct opt_data opts_data
[] = {
552 { "attr", NULL
, "=ATTR1,ATTR2,..." },
553 { "exclude-random", NULL
, "=COLOR" },
554 { "help", "h", NULL
},
555 { "version", "V", NULL
},
557 const struct option
*opt
= long_opts
;
560 printf ("Usage: %s (foreground) OR (foreground)%c(background) OR --clean[-all] [-|file]\n\n", program_name
, COLOR_SEP_CHAR
);
561 printf ("\tColors (foreground) (background)\n");
562 for (i
= 0; i
< tables
[FOREGROUND
].count
; i
++)
564 const struct color
*entry
= &tables
[FOREGROUND
].entries
[i
];
565 const char *name
= entry
->name
;
566 const char *code
= entry
->code
;
568 printf ("\t\t{\033[%s#\033[0m} [%c%c]%s%*s%s\n",
569 code
, toupper (*name
), *name
, name
+ 1, 10 - (int)strlen (name
), " ", name
);
571 printf ("\t\t{-} %s%*s%s\n", name
, 13 - (int)strlen (name
), " ", name
);
573 printf ("\t\t{*} [Rr]%s%*s%s [--exclude-random=<foreground color>]\n", "andom", 10 - (int)strlen ("random"), " ", "random");
575 printf ("\n\tFirst character of color name in upper case denotes increased intensity,\n");
576 printf ("\twhereas for lower case colors will be of normal intensity.\n");
578 printf ("\n\tOptions\n");
579 for (; opt
->name
; opt
++)
581 const struct opt_data
*opt_data
= NULL
;
583 for (i
= 0; i
< COUNT_OF (opts_data
, struct opt_data
); i
++)
584 if (streq (opt
->name
, opts_data
[i
].name
))
586 opt_data
= &opts_data
[i
];
591 if (opt_data
->short_opt
)
592 printf ("\t\t-%s, --%s\n", opt_data
->short_opt
, opt
->name
);
594 printf ("\t\t --%s%s\n", opt
->name
, opt_data
->arg
);
597 printf ("\t\t --%s\n", opt
->name
);
606 # include "version.h"
608 const char *const version
= NULL
;
610 const char *version_prefix
, *version_string
;
611 const char *c_flags
, *ld_flags
, *cpp_flags
;
612 const char *const desc_flags_unknown
= "unknown";
613 struct bytes_size bytes_size
;
616 c_flags
= to_str (CFLAGS
);
618 c_flags
= desc_flags_unknown
;
621 ld_flags
= to_str (LDFLAGS
);
623 ld_flags
= desc_flags_unknown
;
626 cpp_flags
= to_str (CPPFLAGS
);
628 cpp_flags
= desc_flags_unknown
;
635 version_prefix
= version
? "" : "v";
636 version_string
= version
? version
: VERSION
;
637 printf ("%s %s%s (compiled at %s, %s)\n", PROGRAM_NAME
, version_prefix
, version_string
, __DATE__
, __TIME__
);
639 printf ("Compiler flags: %s\n", c_flags
);
640 printf ("Linker flags: %s\n", ld_flags
);
641 printf ("Preprocessor flags: %s\n", cpp_flags
);
642 if (get_bytes_size (BUF_SIZE
, &bytes_size
))
644 if (BUF_SIZE
% 1024 == 0)
645 printf ("Buffer size: %u%c\n", bytes_size
.size
, bytes_size
.unit
);
647 printf ("Buffer size: %u%c, %u byte%s\n", bytes_size
.size
, bytes_size
.unit
,
648 BUF_SIZE
% 1024, BUF_SIZE
% 1024 > 1 ? "s" : "");
651 printf ("Buffer size: %lu byte%s\n", (unsigned long)BUF_SIZE
, BUF_SIZE
> 1 ? "s" : "");
652 printf ("Color separator: '%c'\n", COLOR_SEP_CHAR
);
653 printf ("Debugging: %s\n", debug
? "yes" : "no");
659 if (stream
&& fileno (stream
) != STDIN_FILENO
)
669 for (i
= 0; i
< stacked_vars
; i
++)
671 free_null (vars_list
);
676 free_color_names (struct color_name
**color_names
)
679 for (i
= 0; color_names
[i
]; i
++)
681 RELEASE_VAR (color_names
[i
]->name
);
682 RELEASE_VAR (color_names
[i
]->orig
);
683 RELEASE_VAR (color_names
[i
]);
688 process_args (unsigned int arg_cnt
, char **arg_strings
, char *attr
, const struct color
**colors
, const char **file
, FILE **stream
)
693 struct color_name
*color_names
[3] = {
694 NULL
, /* foreground */
695 NULL
, /* background */
696 NULL
, /* sentinel value */
699 const char *color_string
= arg_cnt
>= 1 ? arg_strings
[0] : NULL
;
700 const char *file_string
= arg_cnt
== 2 ? arg_strings
[1] : NULL
;
702 assert (color_string
!= NULL
);
704 if (streq (color_string
, "-"))
707 vfprintf_fail (formats
[FMT_GENERIC
], "hyphen cannot be used as color string");
709 vfprintf_fail (formats
[FMT_GENERIC
], "hyphen must be preceded by color string");
712 ret
= lstat (color_string
, &sb
);
714 /* Ensure that we don't fail if there's a file with one or more
715 color names in its path. */
716 if (ret
== 0) /* success */
717 skip_path_colors (color_string
, file_string
, &sb
);
719 if ((p
= strchr (color_string
, COLOR_SEP_CHAR
)))
721 if (p
== color_string
)
722 vfprintf_fail (formats
[FMT_STRING
], "foreground color missing in string", color_string
);
723 else if (p
== color_string
+ strlen (color_string
) - 1)
724 vfprintf_fail (formats
[FMT_STRING
], "background color missing in string", color_string
);
725 else if (strchr (++p
, COLOR_SEP_CHAR
))
726 vfprintf_fail (formats
[FMT_STRING
], "one color pair allowed only for string", color_string
);
729 gather_color_names (color_string
, attr
, color_names
);
731 assert (color_names
[FOREGROUND
] != NULL
);
733 if (color_names
[BACKGROUND
])
736 const unsigned int color_sets
[2][2] = { { FOREGROUND
, BACKGROUND
}, { BACKGROUND
, FOREGROUND
} };
737 for (i
= 0; i
< 2; i
++)
739 const unsigned int color1
= color_sets
[i
][0];
740 const unsigned int color2
= color_sets
[i
][1];
741 if (CHECK_COLORS_RANDOM (color1
, color2
))
742 vfprintf_fail (formats
[FMT_RANDOM
], tables
[color1
].desc
, color_names
[color1
]->orig
, "cannot be combined with", color_names
[color2
]->orig
);
746 find_color_entries (color_names
, colors
);
747 assert (colors
[FOREGROUND
] != NULL
);
748 free_color_names (color_names
);
750 if (!colors
[FOREGROUND
]->code
&& colors
[BACKGROUND
] && colors
[BACKGROUND
]->code
)
752 struct color_name color_name
;
753 color_name
.name
= color_name
.orig
= "default";
755 find_color_entry (&color_name
, FOREGROUND
, colors
);
756 assert (colors
[FOREGROUND
]->code
!= NULL
);
759 process_file_arg (file_string
, file
, stream
);
763 process_file_arg (const char *file_string
, const char **file
, FILE **stream
)
767 if (streq (file_string
, "-"))
771 const char *file
= file_string
;
776 ret
= stat (file
, &sb
);
779 vfprintf_fail (formats
[FMT_FILE
], file
, strerror (errno
));
781 if (!VALID_FILE_TYPE (sb
.st_mode
))
782 vfprintf_fail (formats
[FMT_TYPE
], file
, "unrecognized type", get_file_type (sb
.st_mode
));
784 *stream
= open_file (file
, "r");
794 assert (*stream
!= NULL
);
795 assert (*file
!= NULL
);
799 skip_path_colors (const char *color_string
, const char *file_string
, const struct stat
*sb
)
803 const char *color
= color_string
;
804 const mode_t mode
= sb
->st_mode
;
806 for (c
= 1; c
<= 2 && *color
; c
++)
808 bool matched
= false;
810 for (i
= 0; i
< tables
[GENERIC
].count
; i
++)
812 const struct color
*entry
= &tables
[GENERIC
].entries
[i
];
813 if (has_color_name (color
, entry
->name
))
815 color
+= strlen (entry
->name
);
820 if (!matched
&& has_color_name (color
, "random"))
822 color
+= strlen ("random");
825 if (matched
&& *color
== COLOR_SEP_CHAR
&& *(color
+ 1))
831 have_file
= (*color
!= '\0');
835 const char *file_existing
= color_string
;
837 vfprintf_fail (formats
[FMT_QUOTE
], get_file_type (mode
), file_existing
, "cannot be used as color string");
840 if (VALID_FILE_TYPE (mode
))
841 vfprintf_fail (formats
[FMT_QUOTE
], get_file_type (mode
), file_existing
, "must be preceded by color string");
843 vfprintf_fail (formats
[FMT_QUOTE
], get_file_type (mode
), file_existing
, "is not a valid file type");
849 gather_color_names (const char *color_string
, char *attr
, struct color_name
**color_names
)
852 char *color
, *p
, *str
;
854 str
= xstrdup (color_string
);
857 for (index
= 0, color
= str
; *color
; index
++, color
= p
)
862 if ((sep
= strchr (color
, COLOR_SEP_CHAR
)))
868 p
= color
+ strlen (color
);
871 for (ch
= color
; *ch
; ch
++)
873 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color
, "cannot be made of non-alphabetic characters");
875 for (ch
= color
+ 1; *ch
; ch
++)
877 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color
, "cannot be in mixed lower/upper case");
879 if (streq (color
, "None"))
880 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color
, "cannot be bold");
882 if (isupper (*color
))
887 snprintf (attr
+ strlen (attr
), 3, "1;");
890 vfprintf_fail (formats
[FMT_COLOR
], tables
[BACKGROUND
].desc
, color
, "cannot be bold");
891 default: /* never reached */
896 color_names
[index
] = xcalloc (1, sizeof (struct color_name
));
897 STACK_VAR (color_names
[index
]);
899 color_names
[index
]->orig
= xstrdup (color
);
900 STACK_VAR (color_names
[index
]->orig
);
902 for (ch
= color
; *ch
; ch
++)
905 color_names
[index
]->name
= xstrdup (color
);
906 STACK_VAR (color_names
[index
]->name
);
913 read_print_stream (const char *attr
, const struct color
**colors
, const char *file
, FILE *stream
)
915 char buf
[BUF_SIZE
+ 1];
916 unsigned int flags
= 0;
918 while (!feof (stream
))
923 bytes_read
= fread (buf
, 1, BUF_SIZE
, stream
);
924 if (bytes_read
!= BUF_SIZE
&& ferror (stream
))
925 vfprintf_fail (formats
[FMT_ERROR
], BUF_SIZE
, "read");
926 buf
[bytes_read
] = '\0';
928 while ((eol
= strpbrk (line
, "\n\r")))
930 const bool has_text
= (eol
> line
);
936 if (*(eol
+ 1) == '\n')
939 else if (*eol
== '\n')
941 else /* never reached */
942 vfprintf_fail (formats
[FMT_FILE
], file
, "unrecognized line ending");
943 p
= eol
+ SKIP_LINE_ENDINGS (flags
);
945 print_line (attr
, colors
, line
, flags
,
946 omit_color_empty
? has_text
: true);
952 print_line (attr
, colors
, line
, 0, true);
954 else if (*line
!= '\0')
957 if ((clean
|| clean_all
) && (p
= strrchr (line
, '\033')))
958 merge_print_line (line
, p
, stream
);
960 print_line (attr
, colors
, line
, 0, true);
966 merge_print_line (const char *line
, const char *p
, FILE *stream
)
969 char *merged_esc
= NULL
;
970 const char *esc
= "";
971 const char char_restore
= *p
;
973 complete_part_line (p
+ 1, &buf
, stream
);
977 /* form escape sequence */
978 esc
= merged_esc
= str_concat (p
, buf
);
979 /* shorten partial line accordingly */
984 #ifdef TEST_MERGE_PART_LINE
985 printf ("%s%s", line
, esc
);
987 _exit (EXIT_SUCCESS
);
990 *(char *)p
= char_restore
;
997 complete_part_line (const char *p
, char **buf
, FILE *stream
)
999 bool got_next_char
= false, read_from_stream
;
1003 if (get_next_char (&ch
, &p
, stream
, &read_from_stream
))
1007 if (read_from_stream
)
1008 save_char (ch
, buf
, &i
, &size
);
1012 if (read_from_stream
)
1013 ungetc ((int)ch
, stream
);
1014 return; /* cancel */
1018 return; /* cancel */
1020 while (get_next_char (&ch
, &p
, stream
, &read_from_stream
))
1022 if (isdigit (ch
) || ch
== ';')
1024 if (read_from_stream
)
1025 save_char (ch
, buf
, &i
, &size
);
1027 else /* got next character */
1029 got_next_char
= true;
1038 if (read_from_stream
)
1039 save_char (ch
, buf
, &i
, &size
);
1043 if (read_from_stream
)
1044 ungetc ((int)ch
, stream
);
1045 return; /* cancel */
1049 return; /* cancel */
1053 get_next_char (char *ch
, const char **p
, FILE *stream
, bool *read_from_stream
)
1058 if ((c
= fgetc (stream
)) != EOF
)
1061 *read_from_stream
= true;
1066 *read_from_stream
= false;
1074 *read_from_stream
= false;
1080 save_char (char ch
, char **buf
, size_t *i
, size_t *size
)
1084 *size
= ALLOC_COMPLETE_PART_LINE
;
1085 *buf
= xmalloc (*size
);
1087 /* +1: effective occupied size of buffer */
1088 else if ((*i
+ 1) == *size
)
1091 *buf
= xrealloc (*buf
, *size
);
1094 (*buf
)[*i
+ 1] = '\0';
1099 find_color_entries (struct color_name
**color_names
, const struct color
**colors
)
1105 gettimeofday (&tv
, NULL
);
1106 srand (tv
.tv_usec
* tv
.tv_sec
);
1108 for (index
= 0; color_names
[index
]; index
++)
1110 const char *color_name
= color_names
[index
]->name
;
1112 const unsigned int count
= tables
[index
].count
;
1113 const struct color
*const color_entries
= tables
[index
].entries
;
1115 if (streq (color_name
, "random"))
1121 i
= rand() % (count
- 2) + 1; /* omit color none and default */
1125 /* --exclude-random */
1126 if (exclude
&& streq (exclude
, color_entries
[i
].name
))
1128 else if (color_names
[BACKGROUND
] && streq (color_names
[BACKGROUND
]->name
, color_entries
[i
].name
))
1132 if (streq (colors
[FOREGROUND
]->name
, color_entries
[i
].name
))
1135 default: /* never reached */
1138 } while (excludable
);
1139 colors
[index
] = (struct color
*)&color_entries
[i
];
1142 find_color_entry (color_names
[index
], index
, colors
);
1147 find_color_entry (const struct color_name
*color_name
, unsigned int index
, const struct color
**colors
)
1152 const unsigned int count
= tables
[index
].count
;
1153 const struct color
*const color_entries
= tables
[index
].entries
;
1155 for (i
= 0; i
< count
; i
++)
1156 if (streq (color_name
->name
, color_entries
[i
].name
))
1158 colors
[index
] = (struct color
*)&color_entries
[i
];
1163 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color_name
->orig
, "not recognized");
1167 print_line (const char *attr
, const struct color
**colors
, const char *const line
, unsigned int flags
, bool emit_colors
)
1170 if (clean
|| clean_all
)
1172 /* skip for --omit-color-empty? */
1173 else if (emit_colors
)
1175 /* Foreground color code is guaranteed to be set when background color code is present. */
1176 if (colors
[BACKGROUND
] && colors
[BACKGROUND
]->code
)
1177 printf ("\033[%s", colors
[BACKGROUND
]->code
);
1178 if (colors
[FOREGROUND
]->code
)
1179 printf ("\033[%s%s%s\033[0m", attr
, colors
[FOREGROUND
]->code
, line
);
1181 printf (formats
[FMT_GENERIC
], line
);
1190 print_clean (const char *line
)
1192 const char *p
= line
;
1195 p
= get_end_of_esc (p
);
1199 const char *text_start
= p
;
1200 const char *text_end
= get_end_of_text (p
);
1201 print_text (text_start
, text_end
- text_start
);
1202 p
= get_end_of_esc (text_end
);
1207 is_esc (const char *p
)
1209 return gather_esc_offsets (p
, NULL
, NULL
);
1213 get_end_of_esc (const char *p
)
1216 const char *end
= NULL
;
1217 while ((esc
= strchr (p
, '\033')))
1219 if (gather_esc_offsets (esc
, NULL
, &end
))
1223 return end
? end
+ 1 : p
+ strlen (p
);
1227 get_end_of_text (const char *p
)
1230 const char *start
= NULL
;
1231 while ((esc
= strchr (p
, '\033')))
1233 if (gather_esc_offsets (esc
, &start
, NULL
))
1237 return start
? start
: p
+ strlen (p
);
1241 print_text (const char *p
, size_t len
)
1243 size_t bytes_written
;
1244 bytes_written
= fwrite (p
, 1, len
, stdout
);
1245 if (bytes_written
!= len
)
1246 vfprintf_fail (formats
[FMT_ERROR
], (unsigned long)len
, "written");
1250 gather_esc_offsets (const char *p
, const char **start
, const char **end
)
1253 if (*p
== 27 && *(p
+ 1) == '[')
1256 const char *const begin
= p
;
1259 valid
= validate_esc_clean_all (&p
);
1263 unsigned int prev_iter
, iter
;
1265 prev_iter
= iter
= 0;
1267 check_values
= false;
1272 while (isdigit (*p
))
1276 else /* check range */
1281 const unsigned int digits
= p
- digit
;
1282 for (i
= 0; i
< digits
; i
++)
1286 valid
= validate_esc_clean (value
, iter
, &prev_iter
, &p
, &check_values
);
1288 } while (check_values
);
1303 validate_esc_clean_all (const char **p
)
1305 while (isdigit (**p
) || **p
== ';')
1307 return (**p
== 'm');
1311 validate_esc_clean (int value
, unsigned int iter
, unsigned int *prev_iter
, const char **p
, bool *check_values
)
1313 if (is_reset (value
, iter
, p
))
1315 else if (is_attr (value
, iter
, *prev_iter
, p
))
1318 *check_values
= true;
1320 return false; /* partial escape sequence, need another valid value */
1322 else if (is_fg_color (value
, p
))
1324 else if (is_bg_color (value
, iter
, p
))
1331 is_reset (int value
, unsigned int iter
, const char **p
)
1333 return (value
== 0 && iter
== 1 && **p
== 'm');
1337 is_attr (int value
, unsigned int iter
, unsigned int prev_iter
, const char **p
)
1339 return ((value
> 0 && value
< 10) && (iter
- prev_iter
== 1) && **p
== ';');
1343 is_fg_color (int value
, const char **p
)
1345 return (((value
>= 30 && value
<= 37) || value
== 39) && **p
== 'm');
1349 is_bg_color (int value
, unsigned int iter
, const char **p
)
1351 return (((value
>= 40 && value
<= 47) || value
== 49) && iter
== 1 && **p
== 'm');
1356 malloc_wrap (size_t size
)
1358 void *p
= malloc (size
);
1365 calloc_wrap (size_t nmemb
, size_t size
)
1367 void *p
= calloc (nmemb
, size
);
1374 realloc_wrap (void *ptr
, size_t size
)
1376 void *p
= realloc (ptr
, size
);
1382 static const char *const format_debug
= "%s: %10s %7lu bytes [source file %s, line %5u]\n";
1384 malloc_wrap_debug (size_t size
, const char *file
, unsigned int line
)
1386 void *p
= malloc (size
);
1388 MEM_ALLOC_FAIL_DEBUG (file
, line
);
1389 fprintf (log
, format_debug
, program_name
, "malloc'ed", (unsigned long)size
, file
, line
);
1394 calloc_wrap_debug (size_t nmemb
, size_t size
, const char *file
, unsigned int line
)
1396 void *p
= calloc (nmemb
, size
);
1398 MEM_ALLOC_FAIL_DEBUG (file
, line
);
1399 fprintf (log
, format_debug
, program_name
, "calloc'ed", (unsigned long)(nmemb
* size
), file
, line
);
1404 realloc_wrap_debug (void *ptr
, size_t size
, const char *file
, unsigned int line
)
1406 void *p
= realloc (ptr
, size
);
1408 MEM_ALLOC_FAIL_DEBUG (file
, line
);
1409 fprintf (log
, format_debug
, program_name
, "realloc'ed", (unsigned long)size
, file
, line
);
1415 free_wrap (void **ptr
)
1422 # define do_malloc(len, file, line) malloc_wrap(len)
1424 # define do_malloc(len, file, line) malloc_wrap_debug(len, file, line)
1428 strdup_wrap (const char *str
, const char *file
, unsigned int line
)
1430 const size_t len
= strlen (str
) + 1;
1431 char *p
= do_malloc (len
, file
, line
);
1432 strncpy (p
, str
, len
);
1437 str_concat_wrap (const char *str1
, const char *str2
, const char *file
, unsigned int line
)
1439 const size_t len
= strlen (str1
) + strlen (str2
) + 1;
1442 p
= str
= do_malloc (len
, file
, line
);
1443 strncpy (p
, str1
, strlen (str1
));
1445 strncpy (p
, str2
, strlen (str2
));
1453 get_bytes_size (unsigned long bytes
, struct bytes_size
*bytes_size
)
1455 const char *unit
, units
[] = { '0', 'K', 'M', 'G', '\0' };
1456 unsigned long size
= bytes
;
1460 while (size
>= 1024 && *(unit
+ 1))
1465 bytes_size
->size
= (unsigned int)size
;
1466 bytes_size
->unit
= *unit
;
1471 get_file_type (mode_t mode
)
1475 else if (S_ISDIR (mode
))
1477 else if (S_ISCHR (mode
))
1478 return "character device";
1479 else if (S_ISBLK (mode
))
1480 return "block device";
1481 else if (S_ISFIFO (mode
))
1482 return "named pipe";
1483 else if (S_ISLNK (mode
))
1484 return "symbolic link";
1485 else if (S_ISSOCK (mode
))
1492 has_color_name (const char *str
, const char *name
)
1496 assert (strlen (str
) > 0);
1497 assert (strlen (name
) > 0);
1499 if (!(*str
== *name
|| *str
== toupper (*name
)))
1501 else if (*(name
+ 1) != '\0'
1502 && !((p
= strstr (str
+ 1, name
+ 1)) && p
== str
+ 1))
1509 open_file (const char *file
, const char *mode
)
1514 stream
= fopen (file
, mode
);
1516 vfprintf_fail (formats
[FMT_FILE
], file
, strerror (errno
));
1521 #define DO_VFPRINTF(fmt) \
1523 fprintf (stderr, "%s: ", program_name); \
1524 va_start (ap, fmt); \
1525 vfprintf (stderr, fmt, ap); \
1527 fprintf (stderr, "\n");
1530 vfprintf_diag (const char *fmt
, ...)
1536 vfprintf_fail (const char *fmt
, ...)
1539 exit (EXIT_FAILURE
);
1543 stack_var (void ***list
, unsigned int *stacked
, unsigned int index
, void *ptr
)
1545 /* nothing to stack */
1549 *list
= xmalloc (sizeof (void *));
1553 for (i
= 0; i
< *stacked
; i
++)
1557 return; /* reused */
1559 *list
= xrealloc (*list
, (*stacked
+ 1) * sizeof (void *));
1561 (*list
)[index
] = ptr
;
1566 release_var (void **list
, unsigned int stacked
, void **ptr
)
1569 /* nothing to release */
1572 for (i
= 0; i
< stacked
; i
++)
1573 if (list
[i
] == *ptr
)