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https://github.com/versity/scoutfs.git
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d48b447e75
Remove now-unneeded manual padding in arg structs. Signed-off-by: Andy Grover <agrover@versity.com>
110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include <string.h>
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#include <assert.h>
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#include <argp.h>
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#include "cmd.h"
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#include "util.h"
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static struct argp_command {
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char *name;
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struct argp *argp;
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int group;
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int (*func)(int argc, char **argv);
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} argp_cmds[100], *next_argp_cmd = argp_cmds;
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#define cmd_for_each(com) for (com = argp_cmds; com->func; com++)
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void cmd_register_argp(char *name, struct argp *argp, int group,
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int (*func)(int argc, char **argv))
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{
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struct argp_command *com = next_argp_cmd++;
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assert((com - argp_cmds) < array_size(argp_cmds));
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com->name = name;
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com->argp = argp;
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com->group = group;
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com->func = func;
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}
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static struct argp_command *find_command(char *name)
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{
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struct argp_command *com;
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cmd_for_each(com) {
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if (!strcmp(name, com->name))
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return com;
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}
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return NULL;
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}
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static void print_cmds_for_group(int group)
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{
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struct argp_command *com;
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int largest = 0;
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/* Base alignment on all groups */
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cmd_for_each(com)
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largest = max(strlen(com->name), largest);
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cmd_for_each(com) {
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if (com->group == group) {
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fprintf(stderr, " %*s %s\n %*s %s\n",
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largest, com->name, com->argp->args_doc,
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largest, "", com->argp->doc);
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}
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}
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}
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static void usage(void)
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{
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fprintf(stderr, "usage: scoutfs <command> [<args>]\n\n");
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fprintf(stderr, "Selected fs defaults to current working directory.\n");
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fprintf(stderr, "See <command> --help for more details.\n");
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fprintf(stderr, "\nCore admin:\n");
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print_cmds_for_group(GROUP_CORE);
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fprintf(stderr, "\nAdditional Information:\n");
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print_cmds_for_group(GROUP_INFO);
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fprintf(stderr, "\nSearch Acceleration:\n");
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print_cmds_for_group(GROUP_SEARCH);
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fprintf(stderr, "\nArchival Agent Support:\n");
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print_cmds_for_group(GROUP_AGENT);
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fprintf(stderr, "\nDebugging commands:\n");
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print_cmds_for_group(GROUP_DEBUG);
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}
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/* this returns a positive unix return code on error for some reason */
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char cmd_execute(int argc, char **argv)
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{
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struct argp_command *com = NULL;
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int ret;
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if (argc > 1) {
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com = find_command(argv[1]);
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if (!com)
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fprintf(stderr, "scoutfs: unrecognized command: '%s'\n",
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argv[1]);
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}
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if (!com) {
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usage();
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return 1;
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}
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ret = com->func(argc - 1, argv + 1);
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if (ret < 0) {
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fprintf(stderr, "scoutfs: %s failed: %s (%d)\n",
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com->name, strerror(-ret), -ret);
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return 1;
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}
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return 0;
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}
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