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Btrfs-progs: allow multi-line command group synopsis

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Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2012-02-08 17:45:54 +02:00
parent 6cd813b6fc
commit 08b51bd731
9 changed files with 39 additions and 17 deletions
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8
btrfs.c
View File

@ -22,8 +22,10 @@
#include "commands.h"
#include "version.h"
static const char btrfs_cmd_group_usage[] =
"btrfs [--help] [--version] <group> [<group>...] <command> [<args>]";
static const char * const btrfs_cmd_group_usage[] = {
"btrfs [--help] [--version] <group> [<group>...] <command> [<args>]",
NULL
};
static const char btrfs_cmd_group_info[] =
"Use --help as an argument for information on a specific group or command.";
@ -225,7 +227,7 @@ static int handle_options(int *argc, char ***argv)
} else {
fprintf(stderr, "Unknown option: %s\n", arg);
fprintf(stderr, "usage: %s\n",
btrfs_cmd_group.usagestr);
btrfs_cmd_group.usagestr[0]);
exit(129);
}

7
cmds-balance.c
View File

@ -29,8 +29,11 @@
#include "commands.h"
static const char balance_cmd_group_usage[] =
"btrfs [filesystem] balance [<command>] [options] <path>";
static const char * const balance_cmd_group_usage[] = {
"btrfs [filesystem] balance <command> [options] <path>",
"btrfs [filesystem] balance <path>",
NULL
};
static const char balance_cmd_group_info[] =
"'btrfs filesystem balance' command is deprecated, please use\n"

6
cmds-device.c
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@ -39,8 +39,10 @@ struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
static inline int ioctl(int fd, int define, void *arg) { return 0; }
#endif
static const char device_cmd_group_usage[] =
"btrfs device <command> [<args>]";
static const char * const device_cmd_group_usage[] = {
"btrfs device <command> [<args>]",
NULL
};
static const char * const cmd_add_dev_usage[] = {
"btrfs device add <device> [<device>...] <path>",

6
cmds-filesystem.c
View File

@ -34,8 +34,10 @@
#include "commands.h"
#include "btrfslabel.h"
static const char filesystem_cmd_group_usage[] =
"btrfs filesystem [<group>] <command> [<args>]";
static const char * const filesystem_cmd_group_usage[] = {
"btrfs filesystem [<group>] <command> [<args>]",
NULL
};
static const char * const cmd_df_usage[] = {
"btrfs filesystem df <path>",

6
cmds-inspect.c
View File

@ -28,8 +28,10 @@
/* btrfs-list.c */
char *path_for_root(int fd, u64 root);
static const char inspect_cmd_group_usage[] =
"btrfs inspect-internal <command> <args>";
static const char * const inspect_cmd_group_usage[] = {
"btrfs inspect-internal <command> <args>",
NULL
};
static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
{

6
cmds-scrub.c
View File

@ -40,8 +40,10 @@
#include "commands.h"
static const char scrub_cmd_group_usage[] =
"btrfs scrub <command> [options] <path>|<device>";
static const char * const scrub_cmd_group_usage[] = {
"btrfs scrub <command> [options] <path>|<device>",
NULL
};
#define SCRUB_DATA_FILE "/var/lib/btrfs/scrub.status"
#define SCRUB_PROGRESS_SOCKET_PATH "/var/lib/btrfs/scrub.progress"

6
cmds-subvolume.c
View File

@ -33,8 +33,10 @@
int list_subvols(int fd, int print_parent, int get_default);
int find_updated_files(int fd, u64 root_id, u64 oldest_gen);
static const char subvolume_cmd_group_usage[] =
"btrfs subvolume <command> <args>";
static const char * const subvolume_cmd_group_usage[] = {
"btrfs subvolume <command> <args>",
NULL
};
/*
* test if path is a directory

2
commands.h
View File

@ -51,7 +51,7 @@ struct cmd_struct {
};
struct cmd_group {
const char *usagestr;
const char * const *usagestr;
const char *infostr;
const struct cmd_struct commands[];

9
help.c
View File

@ -162,9 +162,16 @@ static void usage_command_group_internal(const struct cmd_group *grp, int full,
void usage_command_group(const struct cmd_group *grp, int full, int err)
{
const char * const *usagestr = grp->usagestr;
FILE *outf = err ? stderr : stdout;
fprintf(outf, "usage: %s\n\n", grp->usagestr);
if (usagestr && *usagestr) {
fprintf(outf, "usage: %s\n", *usagestr++);
while (*usagestr)
fprintf(outf, " or: %s\n", *usagestr++);
}
fputc('\n', outf);
usage_command_group_internal(grp, full, outf);
fputc('\n', outf);