-/*
- * This is needed for each viewer since we are using execvp().
- */
-static const char *babeltrace_opts[] = { "babeltrace" };
-//static const char *lttv_gui_opts[] = { "lttv-gui", "-t", };
-
-/*
- * Type is also use as the index in the viewers array. So please, make sure
- * your enum value is in the right order in the array below.
- */
-enum viewer_type {
- VIEWER_BABELTRACE = 0,
- VIEWER_LTTV_GUI = 1,
- VIEWER_USER_DEFINED = 2,
-};
-
-/*
- * NOTE: "lttv" is a shell command and it's not working for exec() family
- * functions so we might think of removing this wrapper or using bash.
- */
-static struct viewers {
- const char *exec_name;
- enum viewer_type type;
-} viewers[] = {
- { "babeltrace", VIEWER_BABELTRACE },
- { "lttv-gui", VIEWER_LTTV_GUI },
- { NULL, VIEWER_USER_DEFINED },
-};
-
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- fprintf(ofp, "usage: lttng view [SESSION_NAME] [OPTIONS]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "By default, the babeltrace viewer will be used for text viewing\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Where SESSION_NAME is an optional session name. If not specified, lttng will\n");
- fprintf(ofp, "get it from the configuration file (.lttngrc).\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " --list-options Simple listing of options\n");
- fprintf(ofp, " -e, --viewer CMD Specify viewer and/or options to use\n");
- fprintf(ofp, " This will completely override the default viewers so\n");
- fprintf(ofp, " please make sure to specify the full command.\n");
- fprintf(ofp, "\n");
-}
-
-static struct viewers *parse_options(void)
-{
- if (opt_viewer == NULL) {
- /* Default is babeltrace */
- return &(viewers[VIEWER_BABELTRACE]);
- }
-
-#if 0
- if (strstr(opt_viewer, viewers[VIEWER_LTTV_GUI].exec_name) == 0) {
- return &(viewers[VIEWER_LTTV_GUI]);
- }
-#endif
-
- /*
- * This means that if -e, --viewers is used, we just override everything
- * with it. For supported viewers like lttv, we could simply detect if "-t"
- * is passed and if not, add the trace directory to it.
- */
- return &(viewers[VIEWER_USER_DEFINED]);
-}
-
-/*
- * Alloc an array of string pointer from a simple string having all options
- * seperated by spaces. Also adds the trace path to the arguments.
- *
- * The returning pointer is ready to be passed to execvp().
- */
-static char **alloc_argv_from_user_opts(char *opts, const char *trace_path)
-{
- int i = 0, ignore_space = 0;
- unsigned int num_opts = 1;
- char **argv, *token = opts;
-
- /* Count number of arguments. */
- do {
- if (*token == ' ') {
- /* Use to ignore consecutive spaces */
- if (!ignore_space) {
- num_opts++;
- }
- ignore_space = 1;
- } else {
- ignore_space = 0;
- }
- token++;
- } while (*token != '\0');
-
- /* Add two here for the NULL terminating element and trace path */
- argv = malloc(sizeof(char *) * (num_opts + 2));
- if (argv == NULL) {
- goto error;
- }
-
- token = strtok(opts, " ");
- while (token != NULL) {
- argv[i] = strdup(token);
- token = strtok(NULL, " ");
- i++;
- }
-
- argv[num_opts] = (char *) trace_path;
- argv[num_opts + 1] = NULL;
-
- return argv;
-
-error:
- return NULL;
-}