include/colors.h

   1 /*
   2  * Copyright (C) 2012 Ondrej Oprala <ooprala@redhat.com>
   3  * Copyright (C) 2012-2014 Karel Zak <kzak@redhat.com>
   4  *
   5  * This file may be distributed under the terms of the
   6  * GNU Lesser General Public License.
   7  */
   8 #ifndef UTIL_LINUX_COLORS_H
   9 #define UTIL_LINUX_COLORS_H
  10
  11 #include <stdio.h>
  12 #include <unistd.h>
  13
  14 #include "color-names.h"
  15
  16 /* --color[=WHEN] */
  17 enum colortmode {
  18         UL_COLORMODE_AUTO = 0,
  19         UL_COLORMODE_NEVER,
  20         UL_COLORMODE_ALWAYS,
  21         UL_COLORMODE_UNDEF,
  22
  23         __UL_NCOLORMODES        /* last */
  24 };
  25
  26 #ifdef USE_COLORS_BY_DEFAULT
  27 # define USAGE_COLORS_DEFAULT   _("colors are enabled by default")
  28 #else
  29 # define USAGE_COLORS_DEFAULT   _("colors are disabled by default")
  30 #endif
  31
  32 extern int colormode_from_string(const char *str);
  33 extern int colormode_or_err(const char *str, const char *errmsg);
  34
  35 /* Initialize the global variable UL_COLOR_TERM_OK */
  36 extern int colors_init(int mode, const char *util_name);
  37
  38 /* Returns 1 or 0 */
  39 extern int colors_wanted(void);
  40
  41 /* Returns UL_COLORMODE_* */
  42 extern int colors_mode(void);
  43
  44 /* temporary enable/disable colors */
  45 extern void colors_off(void);
  46 extern void colors_on(void);
  47
  48
  49 /* Set the color */
  50 extern void color_fenable(const char *seq, FILE *f);
  51
  52 extern void color_scheme_fenable(const char *name, const char *dflt, FILE *f);
  53 extern const char *color_scheme_get_sequence(const char *name, const char *dflt);
  54
  55 static inline void color_enable(const char *seq)
  56 {
  57         color_fenable(seq, stdout);
  58 }
  59
  60 static inline void color_scheme_enable(const char *name, const char *dflt)
  61 {
  62         color_scheme_fenable(name, dflt, stdout);
  63 }
  64
  65 /* Reset colors to default */
  66 extern void color_fdisable(FILE *f);
  67
  68 static inline void color_disable(void)
  69 {
  70         color_fdisable(stdout);
  71 }
  72
  73 #endif /* UTIL_LINUX_COLORS_H */