mirror of https://github.com/djcb/mu.git
266 lines
5.3 KiB
C
266 lines
5.3 KiB
C
/* -*-mode: c; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-*/
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/*
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** Copyright (C) 2012 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif /*HAVE_CONFIG_H*/
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#ifdef BUILD_GUILE
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#include <libguile.h>
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#endif /*BUILD_GUILE*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <errno.h>
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#include "mu-cmd.h"
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#include "mu-util.h"
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#include "mu-str.h"
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struct _NamePath {
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char *name; /* name of the script (ie., basename with ext)*/
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char *path; /* full path of script */
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};
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typedef struct _NamePath NamePath;
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static NamePath*
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namepath_new (char *name, const char *path)
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{
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NamePath *np;
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np = g_new0 (NamePath, 1);
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np->name = g_strdup (name);
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np->path = g_strdup (path);
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return np;
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}
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static void
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namepath_destroy (NamePath *np)
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{
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if (!np)
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return;
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g_free (np->name);
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g_free (np->path);
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g_free (np);
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}
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static int
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namepath_cmp (NamePath *np1, NamePath *np2)
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{
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return strcmp (np1->name, np2->name);
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}
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static void
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script_namepaths_destroy (GSList *namepaths)
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{
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g_slist_foreach (namepaths, (GFunc)namepath_destroy, NULL);
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g_slist_free (namepaths);
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}
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static GSList*
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get_script_namepaths (const char *path, GError **err)
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{
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DIR *dir;
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GSList *lst;
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struct dirent *dentry;
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dir = opendir (path);
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if (!dir) {
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mu_util_g_set_error (err, MU_ERROR_FILE_CANNOT_OPEN,
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"failed to open '%s': %s",
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path, strerror(errno));
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return NULL;
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}
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/* create a list of names, paths */
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lst = NULL;
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while ((dentry = readdir (dir))) {
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const char* scmext = ".scm";
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char *name, *fullpath;
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/* only consider scm files */
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if (!g_str_has_suffix (dentry->d_name, scmext))
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continue;
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name = g_strndup (dentry->d_name,
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strlen(dentry->d_name) - strlen(scmext));
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fullpath = g_strdup_printf ("%s%c%s", path, G_DIR_SEPARATOR,
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dentry->d_name);
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lst = g_slist_prepend (lst, namepath_new (name, fullpath));
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g_free (name);
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g_free (fullpath);
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}
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closedir (dir);
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return g_slist_sort (lst, (GCompareFunc)namepath_cmp);
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}
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static char*
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find_script_path (const char *script, GError **err)
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{
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GSList *scripts, *cur;
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char *path;
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scripts = get_script_namepaths (MU_STATSDIR, err);
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if (err && *err)
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return NULL;
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for (cur = scripts, path = NULL; cur ; cur = g_slist_next (cur))
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if (g_strcmp0(((NamePath*)cur->data)->name, script) == 0) {
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path = g_strdup (((NamePath*)cur->data)->path);
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break;
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}
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script_namepaths_destroy (scripts);
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if (!path)
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mu_util_g_set_error (err, MU_ERROR_IN_PARAMETERS,
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"statistic '%s' not found",
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script);
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return path;
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}
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#ifdef BUILD_GUILE
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static void
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do_it (void *closure, int argc, char **argv)
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{
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scm_shell (argc, argv);
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}
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static void
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run_guile_script (MuConfig *opts, GError **err)
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{
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char *expr, *query, *scriptpath;
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char *argv[] = {
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"guile", "-l", NULL, "-c", NULL, NULL
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};
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scriptpath = find_script_path (opts->stat, err);
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if (!scriptpath)
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return;
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else
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argv[2] = scriptpath;
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if (opts->params[1])
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query = mu_str_quoted_from_strv
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((const gchar**)&opts->params[1]);
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else
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query = NULL;
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expr = g_strdup_printf (
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"(main '(\"dummy\" \"--muhome=%s\" %s %s))",
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opts->muhome,
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opts->textonly ? "\"--textonly\"" : "",
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query ? query : "");
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g_free (query);
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argv[4] = expr;
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scm_boot_guile (5, argv, do_it, 0);
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/* never reached but let's be correct(TM)*/
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g_free (expr);
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g_free (scriptpath);
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}
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#else
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static void
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run_guile_script (MuConfig *opts, GError **err)
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{
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g_return_if_reached ();
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}
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#endif /*!BUILD_GUILE*/
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static MuError
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list_stats (GError **err)
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{
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GSList *scripts;
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scripts = get_script_namepaths (MU_STATSDIR, err);
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if (err && *err)
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return MU_ERROR;
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if (!scripts)
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g_print ("No statistics available\n");
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else {
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GSList *cur;
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g_print ("Available statistics:\n");
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for (cur = scripts; cur; cur = g_slist_next (cur))
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g_print ("\t%s\n", ((NamePath*)cur->data)->name);
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}
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script_namepaths_destroy (scripts);
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return MU_OK;
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}
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static gboolean
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check_params (MuConfig *opts, GError **err)
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{
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if (!mu_util_supports (MU_FEATURE_GUILE | MU_FEATURE_GNUPLOT)) {
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mu_util_g_set_error (err, MU_ERROR_IN_PARAMETERS,
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"the 'stats' command is not supported");
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return FALSE;
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}
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if (!opts->list && !opts->stat) {
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mu_util_g_set_error
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(err,MU_ERROR_IN_PARAMETERS,
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"--stat=<statistic> or --list is required");
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return FALSE;
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}
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return TRUE;
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}
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MuError
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mu_cmd_stats (MuConfig *opts, GError **err)
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{
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g_return_val_if_fail (opts, MU_ERROR_INTERNAL);
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g_return_val_if_fail (opts->cmd == MU_CONFIG_CMD_STATS,
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MU_ERROR_INTERNAL);
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if (!check_params (opts, err))
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return MU_ERROR;
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if (opts->list)
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return list_stats (err);
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run_guile_script (opts, err);
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return MU_OK;
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}
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