]>
git.refcnt.org Git - colorize.git/blob - colorize.c
9a5646f30b587b985a51740c3c56f139d945e0f3
2 * colorize - Read text from standard input stream or file and print
3 * it colorized through use of ANSI escape sequences
5 * Copyright (c) 2011-2014 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 _POSIX_C_SOURCE 200809L
32 #include <sys/types.h>
42 #define to_str(arg) str(arg)
44 #define streq(s1, s2) (strcmp (s1, s2) == 0)
47 # define xmalloc(size) malloc_wrap_debug(size, __FILE__, __LINE__)
48 # define xcalloc(nmemb, size) calloc_wrap_debug(nmemb, size, __FILE__, __LINE__)
49 # define xrealloc(ptr, size) realloc_wrap_debug(ptr, size, __FILE__, __LINE__)
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)
56 #define free_null(ptr) free_wrap((void **)&ptr)
57 #define xstrdup(str) strdup_wrap(str)
63 # define BUF_SIZE 4096
69 #define SKIP_LINE_ENDINGS(flags) (((flags) & CR) && ((flags) & LF) ? 2 : 1)
71 #define STACK_VAR(ptr) do { \
72 stack_var (&vars_list, &stacked_vars, stacked_vars, ptr); \
75 #define RELEASE_VAR(ptr) do { \
76 release_var (vars_list, stacked_vars, (void **)&ptr); \
79 #define MEM_ALLOC_FAIL_DEBUG(file, line) do { \
80 fprintf (stderr, "Memory allocation failure in source file %s, line %u\n", file, line); \
83 #define MEM_ALLOC_FAIL() do { \
84 fprintf (stderr, "%s: memory allocation failure\n", program_name); \
88 #define ABORT_TRACE() \
89 fprintf (stderr, "Aborting in source file %s, line %u\n", __FILE__, __LINE__); \
92 #define CHECK_COLORS_RANDOM(color1, color2) \
93 streq (color_names[color1]->name, "random") \
94 && (streq (color_names[color2]->name, "none") \
95 || streq (color_names[color2]->name, "default")) \
97 #define COLOR_SEP_CHAR '/'
99 #define VERSION "0.53"
101 typedef enum { false, true } bool;
108 static struct color_name
*color_names
[3] = { NULL
, NULL
, NULL
};
115 static const struct color fg_colors
[] = {
122 { "magenta", "35m" },
125 { "default", "39m" },
127 static const struct color bg_colors
[] = {
134 { "magenta", "45m" },
137 { "default", "49m" },
147 static const char *formats
[] = {
149 "%s color '%s' %s", /* color */
150 "%s color '%s' %s '%s'", /* random */
151 "less than %u bytes %s", /* error */
155 enum { FOREGROUND
, BACKGROUND
};
157 static const struct {
158 struct color
const *entries
;
162 { fg_colors
, sizeof (fg_colors
) / sizeof (struct color
), "foreground" },
163 { bg_colors
, sizeof (bg_colors
) / sizeof (struct color
), "background" },
166 static FILE *stream
= NULL
;
168 static unsigned int stacked_vars
= 0;
169 static void **vars_list
= NULL
;
171 static bool clean
= false;
172 static bool clean_all
= false;
174 static char *exclude
= NULL
;
176 static const char *program_name
;
178 static void print_hint (void);
179 static void print_help (void);
180 static void print_version (void);
181 static void cleanup (void);
182 static void free_color_names (struct color_name
**);
183 static void process_args (unsigned int, char **, bool *, const struct color
**, const char **, FILE **);
184 static void process_file_arg (const char *, const char **, FILE **);
185 static void read_print_stream (bool, const struct color
**, const char *, FILE *);
186 static void find_color_entries (struct color_name
**, const struct color
**);
187 static void find_color_entry (const struct color_name
*, unsigned int, const struct color
**);
188 static void print_line (bool, const struct color
**, const char * const, unsigned int);
189 static void print_clean (const char *);
190 static void print_free_offsets (const char *, char ***, unsigned int);
191 static void *malloc_wrap (size_t);
192 static void *calloc_wrap (size_t, size_t);
193 static void *realloc_wrap (void *, size_t);
194 static void *malloc_wrap_debug (size_t, const char *, unsigned int);
195 static void *calloc_wrap_debug (size_t, size_t, const char *, unsigned int);
196 static void *realloc_wrap_debug (void *, size_t, const char *, unsigned int);
197 static void free_wrap (void **);
198 static char *strdup_wrap (const char *);
199 static char *str_concat (const char *, const char *);
200 static bool has_color_name (const char *, const char *);
201 static void vfprintf_diag (const char *, ...);
202 static void vfprintf_fail (const char *, ...);
203 static void stack_var (void ***, unsigned int *, unsigned int, void *);
204 static void release_var (void **, unsigned int, void **);
206 #define SET_OPT_TYPE(type) \
215 main (int argc
, char **argv
)
217 unsigned int arg_cnt
= 0;
227 int opt
, opt_type
= 0;
228 struct option long_opts
[] = {
229 { "clean", no_argument
, &opt_type
, OPT_CLEAN
},
230 { "clean-all", no_argument
, &opt_type
, OPT_CLEAN_ALL
},
231 { "exclude-random", required_argument
, &opt_type
, OPT_EXCLUDE_RANDOM
},
232 { "help", no_argument
, &opt_type
, OPT_HELP
},
233 { "version", no_argument
, &opt_type
, OPT_VERSION
},
234 { NULL
, 0, NULL
, 0 },
239 const struct color
*colors
[2] = {
240 NULL
, /* foreground */
241 NULL
, /* background */
244 const char *file
= NULL
;
246 program_name
= argv
[0];
249 setvbuf (stdout
, NULL
, _IOLBF
, 0);
251 while ((opt
= getopt_long (argc
, argv
, "hv", long_opts
, NULL
)) != -1)
256 case 0: /* long opts */
265 case OPT_EXCLUDE_RANDOM
: {
268 exclude
= xstrdup (optarg
);
270 for (i
= 1; i
< tables
[FOREGROUND
].count
- 1; i
++) /* skip color none and default */
272 const struct color
*entry
= &tables
[FOREGROUND
].entries
[i
];
273 if (streq (exclude
, entry
->name
))
280 vfprintf_fail (formats
[FMT_GENERIC
], "--exclude-random switch must be provided a plain color");
289 default: /* never reached */
294 SET_OPT_TYPE (OPT_HELP
);
296 SET_OPT_TYPE (OPT_VERSION
);
300 default: /* never reached */
305 arg_cnt
= argc
- optind
;
307 if (clean
|| clean_all
)
309 if (clean
&& clean_all
)
310 vfprintf_fail (formats
[FMT_GENERIC
], "--clean and --clean-all switch are mutually exclusive");
313 const char *format
= "%s %s";
314 const char *message
= "switch cannot be used with more than one file";
316 vfprintf_fail (format
, "--clean", message
);
318 vfprintf_fail (format
, "--clean-all", message
);
323 if (arg_cnt
== 0 || arg_cnt
> 2)
325 vfprintf_diag ("%u arguments provided, expected 1-2 arguments or clean option", arg_cnt
);
331 if (clean
|| clean_all
)
332 process_file_arg (argv
[optind
], &file
, &stream
);
334 process_args (arg_cnt
, &argv
[optind
], &bold
, colors
, &file
, &stream
);
335 read_print_stream (bold
, colors
, file
, stream
);
337 RELEASE_VAR (exclude
);
345 fprintf (stderr
, "Type `%s --help' for help screen.\n", program_name
);
353 printf ("Usage: %s (foreground) OR (foreground)%c(background) OR --clean[-all] [-|file]\n\n", program_name
, COLOR_SEP_CHAR
);
354 printf ("\tColors (foreground) (background)\n");
355 for (i
= 0; i
< tables
[FOREGROUND
].count
; i
++)
357 const struct color
*entry
= &tables
[FOREGROUND
].entries
[i
];
358 const char *name
= entry
->name
;
359 const char *code
= entry
->code
;
361 printf ("\t\t{\033[%s#\033[0m} [%c%c]%s%*s%s\n",
362 code
, toupper (*name
), *name
, name
+ 1, 10 - (int)strlen (name
), " ", name
);
364 printf ("\t\t{-} %s%*s%s\n", name
, 13 - (int)strlen (name
), " ", name
);
366 printf ("\t\t{*} [Rr]%s%*s%s [--exclude-random=<foreground color>]\n", "andom", 10 - (int)strlen ("random"), " ", "random");
368 printf ("\n\tFirst character of color name in upper case denotes increased intensity,\n");
369 printf ("\twhereas for lower case colors will be of normal intensity.\n");
371 printf ("\n\tOptions\n");
372 printf ("\t\t --clean\n");
373 printf ("\t\t --clean-all\n");
374 printf ("\t\t --exclude-random\n");
375 printf ("\t\t-h, --help\n");
376 printf ("\t\t-v, --version\n\n");
385 c_flags
= to_str (CFLAGS
);
394 printf ("%s v%s (compiled at %s, %s)\n", "colorize", VERSION
, __DATE__
, __TIME__
);
395 printf ("Compiler flags: %s\n", c_flags
);
396 printf ("Buffer size: %u bytes\n", BUF_SIZE
);
397 printf ("Debugging: %s\n", debug
? "yes" : "no");
403 free_color_names (color_names
);
405 if (stream
&& fileno (stream
) != STDIN_FILENO
)
411 for (i
= 0; i
< stacked_vars
; i
++)
413 free_null (vars_list
[i
]);
415 free_null (vars_list
);
420 free_color_names (struct color_name
**color_names
)
423 for (i
= 0; color_names
[i
]; i
++)
425 free_null (color_names
[i
]->name
);
426 free_null (color_names
[i
]->orig
);
427 free_null (color_names
[i
]);
432 process_args (unsigned int arg_cnt
, char **arg_strings
, bool *bold
, const struct color
**colors
, const char **file
, FILE **stream
)
436 char *color
, *p
, *str
;
439 const char *color_string
= arg_cnt
>= 1 ? arg_strings
[0] : NULL
;
440 const char *file_string
= arg_cnt
== 2 ? arg_strings
[1] : NULL
;
442 assert (color_string
);
444 if (streq (color_string
, "-"))
447 vfprintf_fail (formats
[FMT_GENERIC
], "hyphen cannot be used as color string");
449 vfprintf_fail (formats
[FMT_GENERIC
], "hyphen must be preceeded by color string");
452 ret
= stat (color_string
, &sb
);
454 /* Ensure that we don't fail if there's a file with one or more
455 color names in its path. */
460 const char *color
= color_string
;
462 for (c
= 1; c
<= 2 && *color
; c
++)
464 bool matched
= false;
466 for (i
= 0; i
< tables
[FOREGROUND
].count
; i
++)
468 const struct color
*entry
= &tables
[FOREGROUND
].entries
[i
];
469 if (has_color_name (color
, entry
->name
))
471 color
+= strlen (entry
->name
);
476 if (!matched
&& has_color_name (color
, "random"))
478 color
+= strlen ("random");
481 if (matched
&& *color
== COLOR_SEP_CHAR
&& *(color
+ 1))
487 have_file
= (*color
!= '\0');
492 vfprintf_fail (formats
[FMT_GENERIC
], "file cannot be used as color string");
494 vfprintf_fail (formats
[FMT_GENERIC
], "file must be preceeded by color string");
498 if ((p
= strchr (color_string
, COLOR_SEP_CHAR
)))
500 if (p
== color_string
)
501 vfprintf_fail (formats
[FMT_GENERIC
], "foreground color missing");
502 else if (p
== color_string
+ strlen (color_string
) - 1)
503 vfprintf_fail (formats
[FMT_GENERIC
], "background color missing");
504 else if (strchr (++p
, COLOR_SEP_CHAR
))
505 vfprintf_fail (formats
[FMT_GENERIC
], "one color pair allowed only");
508 str
= xstrdup (color_string
);
511 for (index
= 0, color
= str
; *color
; index
++, color
= p
)
516 if ((sep
= strchr (color
, COLOR_SEP_CHAR
)))
522 p
= color
+ strlen (color
);
525 for (ch
= color
; *ch
; ch
++)
527 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color
, "cannot be made of non-alphabetic characters");
529 for (ch
= color
+ 1; *ch
; ch
++)
531 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color
, "cannot be in mixed lower/upper case");
533 if (streq (color
, "None"))
534 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color
, "cannot be bold");
536 if (isupper (*color
))
544 vfprintf_fail (formats
[FMT_COLOR
], tables
[BACKGROUND
].desc
, color
, "cannot be bold");
546 default: /* never reached */
551 color_names
[index
] = xcalloc (1, sizeof (struct color_name
));
553 color_names
[index
]->orig
= xstrdup (color
);
555 for (ch
= color
; *ch
; ch
++)
558 color_names
[index
]->name
= xstrdup (color
);
563 assert (color_names
[FOREGROUND
]);
565 if (color_names
[BACKGROUND
])
568 unsigned int color_sets
[2][2] = { { FOREGROUND
, BACKGROUND
}, { BACKGROUND
, FOREGROUND
} };
569 for (i
= 0; i
< 2; i
++)
571 unsigned int color1
= color_sets
[i
][0];
572 unsigned int color2
= color_sets
[i
][1];
573 if (CHECK_COLORS_RANDOM (color1
, color2
))
574 vfprintf_fail (formats
[FMT_RANDOM
], tables
[color1
].desc
, color_names
[color1
]->orig
, "cannot be combined with", color_names
[color2
]->orig
);
578 find_color_entries (color_names
, colors
);
579 free_color_names (color_names
);
581 if (!colors
[FOREGROUND
]->code
&& colors
[BACKGROUND
] && colors
[BACKGROUND
]->code
)
583 struct color_name color_name
;
584 color_name
.name
= color_name
.orig
= "default";
586 find_color_entry (&color_name
, FOREGROUND
, colors
);
589 process_file_arg (file_string
, file
, stream
);
593 process_file_arg (const char *file_string
, const char **file
, FILE **stream
)
597 if (streq (file_string
, "-"))
602 const char *file
= file_string
;
607 ret
= stat (file
, &sb
);
610 vfprintf_fail (formats
[FMT_FILE
], file
, strerror (errno
));
612 if (!(S_ISREG (sb
.st_mode
) || S_ISLNK (sb
.st_mode
) || S_ISFIFO (sb
.st_mode
)))
613 vfprintf_fail (formats
[FMT_FILE
], file
, "unrecognized file type");
617 s
= fopen (file
, "r");
619 vfprintf_fail (formats
[FMT_FILE
], file
, strerror (errno
));
634 #define MERGE_PRINT_LINE(part_line, line, flags, check_eof) do { \
635 char *current_line, *merged_line = NULL; \
638 merged_line = str_concat (part_line, line); \
639 free_null (part_line); \
641 current_line = merged_line ? merged_line : (char *)line; \
642 if (!check_eof || *current_line != '\0') \
643 print_line (bold, colors, current_line, flags); \
644 free (merged_line); \
648 read_print_stream (bool bold
, const struct color
**colors
, const char *file
, FILE *stream
)
650 char buf
[BUF_SIZE
+ 1], *part_line
= NULL
;
651 unsigned int flags
= 0;
653 while (!feof (stream
))
658 memset (buf
, '\0', BUF_SIZE
+ 1);
659 bytes_read
= fread (buf
, 1, BUF_SIZE
, stream
);
660 if (bytes_read
!= BUF_SIZE
&& ferror (stream
))
661 vfprintf_fail (formats
[FMT_ERROR
], BUF_SIZE
, "read");
663 while ((eol
= strpbrk (line
, "\n\r")))
670 if (*(eol
+ 1) == '\n')
673 else if (*eol
== '\n')
676 vfprintf_fail (formats
[FMT_FILE
], file
, "unrecognized line ending");
677 p
= eol
+ SKIP_LINE_ENDINGS (flags
);
679 MERGE_PRINT_LINE (part_line
, line
, flags
, false);
683 MERGE_PRINT_LINE (part_line
, line
, 0, true);
685 else if (*line
!= '\0')
687 if (!clean
&& !clean_all
) /* efficiency */
688 print_line (bold
, colors
, line
, 0);
690 part_line
= xstrdup (line
);
693 char *merged_line
= str_concat (part_line
, line
);
695 part_line
= merged_line
;
702 find_color_entries (struct color_name
**color_names
, const struct color
**colors
)
708 gettimeofday (&tv
, NULL
);
709 srand (tv
.tv_usec
* tv
.tv_sec
);
711 for (index
= 0; color_names
[index
]; index
++)
713 const char *color_name
= color_names
[index
]->name
;
715 const unsigned int count
= tables
[index
].count
;
716 const struct color
*const color_entries
= tables
[index
].entries
;
718 if (streq (color_name
, "random"))
724 i
= rand() % (count
- 2) + 1; /* omit color none and default */
728 /* --exclude-random */
729 if (exclude
&& streq (exclude
, color_entries
[i
].name
))
731 else if (color_names
[BACKGROUND
] && streq (color_names
[BACKGROUND
]->name
, color_entries
[i
].name
))
735 if (streq (colors
[FOREGROUND
]->name
, color_entries
[i
].name
))
738 default: /* never reached */
741 } while (excludable
);
742 colors
[index
] = (struct color
*)&color_entries
[i
];
745 find_color_entry (color_names
[index
], index
, colors
);
750 find_color_entry (const struct color_name
*color_name
, unsigned int index
, const struct color
**colors
)
755 const unsigned int count
= tables
[index
].count
;
756 const struct color
*const color_entries
= tables
[index
].entries
;
758 for (i
= 0; i
< count
; i
++)
759 if (streq (color_name
->name
, color_entries
[i
].name
))
761 colors
[index
] = (struct color
*)&color_entries
[i
];
766 vfprintf_fail (formats
[FMT_COLOR
], tables
[index
].desc
, color_name
->orig
, "not recognized");
770 print_line (bool bold
, const struct color
**colors
, const char *const line
, unsigned int flags
)
773 if (clean
|| clean_all
)
777 /* Foreground color code is guaranteed to be set when background color code is present. */
778 if (colors
[BACKGROUND
] && colors
[BACKGROUND
]->code
)
779 printf ("\033[%s", colors
[BACKGROUND
]->code
);
780 if (colors
[FOREGROUND
]->code
)
781 printf ("\033[%s%s%s\033[0m", bold
? "1;" : "", colors
[FOREGROUND
]->code
, line
);
783 printf (formats
[FMT_GENERIC
], line
);
792 print_clean (const char *line
)
795 char ***offsets
= NULL
;
796 unsigned int count
= 0, i
= 0;
801 if (*p
== 27 && *(p
+ 1) == '[')
803 const char *begin
= p
;
807 while (isdigit (*p
) || *p
== ';')
813 unsigned int iter
= 0;
816 check_values
= false;
825 else /* check range */
830 const unsigned int digits
= p
- digit
;
831 for (i
= 0; i
< digits
; i
++)
835 if (value
== 0) /* reset */
841 else if (value
== 1) /* bold */
843 bool discard
= false;
853 else if ((value
>= 30 && value
<= 37) || value
== 39) /* foreground colors */
855 else if ((value
>= 40 && value
<= 47) || value
== 49) /* background colors */
864 } while (iter
== 1 && check_values
);
868 const char *end
= p
++;
870 offsets
= xmalloc (++count
* sizeof (char **));
872 offsets
= xrealloc (offsets
, ++count
* sizeof (char **));
873 offsets
[i
] = xmalloc (2 * sizeof (char *));
874 offsets
[i
][0] = (char *)begin
; /* ESC */
875 offsets
[i
][1] = (char *)end
; /* m */
886 print_free_offsets (line
, offsets
, count
);
888 printf (formats
[FMT_GENERIC
], line
);
891 #define SET_CHAR(offset, new, old) \
895 #define RESTORE_CHAR(offset, old) \
899 print_free_offsets (const char *line
, char ***offsets
, unsigned int count
)
904 SET_CHAR (offsets
[0][0], '\0', &ch
);
905 printf (formats
[FMT_GENERIC
], line
);
906 RESTORE_CHAR (offsets
[0][0], ch
);
908 for (i
= 0; i
< count
; i
++)
911 bool next_offset
= false;
914 SET_CHAR (offsets
[i
+ 1][0], '\0', &ch
);
917 printf (formats
[FMT_GENERIC
], offsets
[i
][1] + 1);
919 RESTORE_CHAR (offsets
[i
+ 1][0], ch
);
921 for (i
= 0; i
< count
; i
++)
922 free_null (offsets
[i
]);
927 malloc_wrap (size_t size
)
929 void *p
= malloc (size
);
936 calloc_wrap (size_t nmemb
, size_t size
)
938 void *p
= calloc (nmemb
, size
);
945 realloc_wrap (void *ptr
, size_t size
)
947 void *p
= realloc (ptr
, size
);
954 malloc_wrap_debug (size_t size
, const char *file
, unsigned int line
)
956 void *p
= malloc (size
);
958 MEM_ALLOC_FAIL_DEBUG (file
, line
);
963 calloc_wrap_debug (size_t nmemb
, size_t size
, const char *file
, unsigned int line
)
965 void *p
= calloc (nmemb
, size
);
967 MEM_ALLOC_FAIL_DEBUG (file
, line
);
972 realloc_wrap_debug (void *ptr
, size_t size
, const char *file
, unsigned int line
)
974 void *p
= realloc (ptr
, size
);
976 MEM_ALLOC_FAIL_DEBUG (file
, line
);
981 free_wrap (void **ptr
)
988 strdup_wrap (const char *str
)
990 const size_t len
= strlen (str
) + 1;
991 char *p
= xmalloc (len
);
992 strncpy (p
, str
, len
);
997 str_concat (const char *str1
, const char *str2
)
999 const size_t len
= strlen (str1
) + strlen (str2
) + 1;
1002 p
= str
= xmalloc (len
);
1003 strncpy (p
, str1
, strlen (str1
));
1005 strncpy (p
, str2
, strlen (str2
));
1013 has_color_name (const char *str
, const char *name
)
1017 assert (strlen (str
));
1018 assert (strlen (name
));
1020 if (!(*str
== *name
|| *str
== toupper (*name
)))
1022 else if (*(name
+ 1) != '\0'
1023 && !((p
= strstr (str
+ 1, name
+ 1)) && p
== str
+ 1))
1029 #define DO_VFPRINTF(fmt) \
1031 fprintf (stderr, "%s: ", program_name); \
1032 va_start (ap, fmt); \
1033 vfprintf (stderr, fmt, ap); \
1035 fprintf (stderr, "\n"); \
1038 vfprintf_diag (const char *fmt
, ...)
1044 vfprintf_fail (const char *fmt
, ...)
1047 exit (EXIT_FAILURE
);
1051 stack_var (void ***list
, unsigned int *stacked
, unsigned int index
, void *ptr
)
1053 /* nothing to stack */
1057 *list
= xmalloc (sizeof (void *));
1061 for (i
= 0; i
< *stacked
; i
++)
1065 return; /* reused */
1067 *list
= xrealloc (*list
, (*stacked
+ 1) * sizeof (void *));
1069 (*list
)[index
] = ptr
;
1074 release_var (void **list
, unsigned int stacked
, void **ptr
)
1077 /* nothing to release */
1080 for (i
= 0; i
< stacked
; i
++)
1081 if (list
[i
] == *ptr
)