#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <limits.h>
#include "commands.h"
-
-extern char argv0_buf[ARGV0_BUF_SIZE];
+#include "utils.h"
#define USAGE_SHORT 1U
#define USAGE_LONG 2U
void usage(const char * const *usagestr)
{
usage_command_usagestr(usagestr, NULL, 1, 1);
- exit(129);
+ exit(1);
}
static void usage_command_group_internal(const struct cmd_group *grp, int full,
int do_sep = 0;
for (; cmd->token; cmd++) {
- if (cmd->hidden)
+ if (cmd->flags & CMD_HIDDEN)
continue;
if (full && cmd != grp->commands)
}
}
+void usage_command_group_short(const struct cmd_group *grp)
+{
+ const char * const *usagestr = grp->usagestr;
+ FILE *outf = stdout;
+ const struct cmd_struct *cmd;
+
+ if (usagestr && *usagestr) {
+ fprintf(outf, "usage: %s\n", *usagestr++);
+ while (*usagestr)
+ fprintf(outf, " or: %s\n", *usagestr++);
+ }
+
+ fputc('\n', outf);
+
+ fprintf(outf, "Command groups:\n");
+ for (cmd = grp->commands; cmd->token; cmd++) {
+ if (cmd->flags & CMD_HIDDEN)
+ continue;
+
+ if (!cmd->next)
+ continue;
+
+ fprintf(outf, " %-16s %s\n", cmd->token, cmd->next->infostr);
+ }
+
+ fprintf(outf, "\nCommands:\n");
+ for (cmd = grp->commands; cmd->token; cmd++) {
+ if (cmd->flags & CMD_HIDDEN)
+ continue;
+
+ if (cmd->next)
+ continue;
+
+ fprintf(outf, " %-16s %s\n", cmd->token, cmd->usagestr[1]);
+ }
+
+ fputc('\n', outf);
+ fprintf(stderr, "For an overview of a given command use 'btrfs command --help'\n");
+ fprintf(stderr, "or 'btrfs [command...] --help --full' to print all available options.\n");
+ fprintf(stderr, "Any command name can be shortened as far as it stays unambiguous,\n");
+ fprintf(stderr, "however it is recommended to use full command names in scripts.\n");
+ fprintf(stderr, "All command groups have their manual page named 'btrfs-<group>'.\n");
+}
+
void usage_command_group(const struct cmd_group *grp, int full, int err)
{
const char * const *usagestr = grp->usagestr;
void help_unknown_token(const char *arg, const struct cmd_group *grp)
{
- fprintf(stderr, "%s: unknown token '%s'\n", argv0_buf, arg);
+ fprintf(stderr, "%s: unknown token '%s'\n", get_argv0_buf(), arg);
usage_command_group(grp, 0, 1);
exit(1);
}
{
const struct cmd_struct *cmd = grp->commands;
- fprintf(stderr, "%s: ambiguous token '%s'\n", argv0_buf, arg);
+ fprintf(stderr, "%s: ambiguous token '%s'\n", get_argv0_buf(), arg);
fprintf(stderr, "\nDid you mean one of these ?\n");
for (; cmd->token; cmd++) {