help.h

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public
   4  * License v2 as published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   9  * General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public
  12  * License along with this program; if not, write to the
  13  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14  * Boston, MA 021110-1307, USA.
  15  */
  16
  17 #ifndef __BTRFS_HELP_H__
  18 #define __BTRFS_HELP_H__
  19
  20 #define GETOPT_VAL_SI                           256
  21 #define GETOPT_VAL_IEC                          257
  22 #define GETOPT_VAL_RAW                          258
  23 #define GETOPT_VAL_HUMAN_READABLE               259
  24 #define GETOPT_VAL_KBYTES                       260
  25 #define GETOPT_VAL_MBYTES                       261
  26 #define GETOPT_VAL_GBYTES                       262
  27 #define GETOPT_VAL_TBYTES                       263
  28
  29 #define GETOPT_VAL_HELP                         270
  30
  31 #define ARGV0_BUF_SIZE  PATH_MAX
  32
  33 #define HELPINFO_UNITS_LONG                                                     \
  34         "--raw              raw numbers in bytes",                              \
  35         "--human-readable   human friendly numbers, base 1024 (default)",       \
  36         "--iec              use 1024 as a base (KiB, MiB, GiB, TiB)",           \
  37         "--si               use 1000 as a base (kB, MB, GB, TB)",               \
  38         "--kbytes           show sizes in KiB, or kB with --si",                \
  39         "--mbytes           show sizes in MiB, or MB with --si",                \
  40         "--gbytes           show sizes in GiB, or GB with --si",                \
  41         "--tbytes           show sizes in TiB, or TB with --si"
  42
  43 #define HELPINFO_UNITS_SHORT_LONG                                               \
  44         "-b|--raw           raw numbers in bytes",                              \
  45         "-h|--human-readable",                                                  \
  46         "                   human friendly numbers, base 1024 (default)",       \
  47         "-H                 human friendly numbers, base 1000",                 \
  48         "--iec              use 1024 as a base (KiB, MiB, GiB, TiB)",           \
  49         "--si               use 1000 as a base (kB, MB, GB, TB)",               \
  50         "-k|--kbytes        show sizes in KiB, or kB with --si",                \
  51         "-m|--mbytes        show sizes in MiB, or MB with --si",                \
  52         "-g|--gbytes        show sizes in GiB, or GB with --si",                \
  53         "-t|--tbytes        show sizes in TiB, or TB with --si"
  54
  55 struct cmd_struct;
  56 struct cmd_group;
  57
  58 __attribute__((noreturn))
  59 void usage(const char * const *usagestr);
  60 void usage_command(const struct cmd_struct *cmd, int full, int err);
  61 void usage_command_group(const struct cmd_group *grp, int all, int err);
  62 void usage_command_group_short(const struct cmd_group *grp);
  63
  64 __attribute__((noreturn))
  65 void help_unknown_token(const char *arg, const struct cmd_group *grp);
  66 __attribute__((noreturn))
  67 void help_ambiguous_token(const char *arg, const struct cmd_group *grp);
  68
  69 void help_command_group(const struct cmd_group *grp, int argc, char **argv);
  70
  71 int check_argc_exact(int nargs, int expected);
  72 int check_argc_min(int nargs, int expected);
  73 int check_argc_max(int nargs, int expected);
  74 void clean_args_no_options(int argc, char *argv[], const char * const *usage);
  75 void clean_args_no_options_relaxed(int argc, char *argv[],
  76                 const char * const *usagestr);
  77
  78 void fixup_argv0(char **argv, const char *token);
  79 void set_argv0(char **argv);
  80 const char *get_argv0_buf(void);
  81
  82 #endif