src/bin/lttng/utils.c

   1 /*
   2  * Copyright (c)  2011 David Goulet <david.goulet@polymtl.ca>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License, version 2 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #define _GNU_SOURCE
  19 #include <stdlib.h>
  20 #include <ctype.h>
  21
  22 #include <common/error.h>
  23
  24 #include "conf.h"
  25 #include "utils.h"
  26
  27 /*
  28  *  get_session_name
  29  *
  30  *  Return allocated string with the session name found in the config
  31  *  directory.
  32  */
  33 char *get_session_name(void)
  34 {
  35         char *path, *session_name = NULL;
  36
  37         /* Get path to config file */
  38         path = config_get_default_path();
  39         if (path == NULL) {
  40                 goto error;
  41         }
  42
  43         /* Get session name from config */
  44         session_name = config_read_session_name(path);
  45         if (session_name == NULL) {
  46                 goto error;
  47         }
  48
  49         DBG2("Config file path found: %s", path);
  50         DBG("Session name found: %s", session_name);
  51         return session_name;
  52
  53 error:
  54         return NULL;
  55 }
  56
  57
  58 /*
  59  * list_cmd_options
  60  *
  61  * Prints a simple list of the options available to a command. This is intended
  62  * to be easily parsed for bash completion.
  63  */
  64 void list_cmd_options(FILE *ofp, struct poptOption *options)
  65 {
  66         int i;
  67         struct poptOption *option = NULL;
  68
  69         for (i = 0; options[i].longName != NULL; i++) {
  70                 option = &options[i];
  71
  72                 fprintf(ofp, "--%s\n", option->longName);
  73
  74                 if (isprint(option->shortName)) {
  75                         fprintf(ofp, "-%c\n", option->shortName);
  76                 }
  77         }
  78 }