mirror of https://github.com/djcb/mu.git
469 lines
9.4 KiB
C
469 lines
9.4 KiB
C
/*
|
|
** Copyright (C) 2008-2021 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
|
|
**
|
|
** This program is free software; you can redistribute it and/or modify
|
|
** it under the terms of the GNU General Public License as published by
|
|
** the Free Software Foundation; either version 3 of the License, or
|
|
** (at your option) any later version.
|
|
**
|
|
** This program is distributed in the hope that it will be useful,
|
|
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
** GNU General Public License for more details.
|
|
**
|
|
** You should have received a copy of the GNU General Public License
|
|
** along with this program; if not, write to the Free Software Foundation,
|
|
** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
**
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#ifndef _GNU_SOURCE
|
|
#define _GNU_SOURCE
|
|
#endif /*_GNU_SOURCE*/
|
|
|
|
#include "mu-util.h"
|
|
#ifdef HAVE_WORDEXP_H
|
|
#include <wordexp.h> /* for shell-style globbing */
|
|
#endif /*HAVE_WORDEXP_H*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
#include <locale.h> /* for setlocale() */
|
|
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
|
|
#include <glib-object.h>
|
|
#include <glib/gstdio.h>
|
|
#include <gio/gio.h>
|
|
#include <errno.h>
|
|
|
|
#include <langinfo.h>
|
|
|
|
|
|
static char*
|
|
do_wordexp (const char *path)
|
|
{
|
|
#ifdef HAVE_WORDEXP_H
|
|
wordexp_t wexp;
|
|
char *dir;
|
|
|
|
if (!path) {
|
|
/* g_debug ("%s: path is empty", __func__); */
|
|
return NULL;
|
|
}
|
|
|
|
if (wordexp (path, &wexp, 0) != 0) {
|
|
/* g_debug ("%s: expansion failed for %s", __func__, path); */
|
|
return NULL;
|
|
}
|
|
|
|
/* we just pick the first one */
|
|
dir = g_strdup (wexp.we_wordv[0]);
|
|
|
|
/* strangely, below seems to lead to a crash on MacOS (BSD);
|
|
so we have to allow for a tiny leak here on that
|
|
platform... maybe instead of __APPLE__ it should be
|
|
__BSD__?
|
|
|
|
Hmmm., cannot reproduce that crash anymore, so commenting
|
|
it out for now...
|
|
*/
|
|
/* #ifndef __APPLE__ */
|
|
wordfree (&wexp);
|
|
/* #endif /\*__APPLE__*\/ */
|
|
return dir;
|
|
|
|
# else /*!HAVE_WORDEXP_H*/
|
|
/* E.g. OpenBSD does not have wordexp.h, so we ignore it */
|
|
return path ? g_strdup (path) : NULL;
|
|
#endif /*HAVE_WORDEXP_H*/
|
|
}
|
|
|
|
|
|
/* note, the g_debugs are commented out because this function may be
|
|
* called before the log handler is installed. */
|
|
char*
|
|
mu_util_dir_expand (const char *path)
|
|
{
|
|
char *dir;
|
|
char resolved[PATH_MAX + 1];
|
|
|
|
g_return_val_if_fail (path, NULL);
|
|
|
|
dir = do_wordexp (path);
|
|
if (!dir)
|
|
return NULL; /* error */
|
|
|
|
/* don't try realpath if the dir does not exist */
|
|
if (access (dir, F_OK) != 0)
|
|
return dir;
|
|
|
|
/* now resolve any symlinks, .. etc. */
|
|
if (realpath (dir, resolved) == NULL) {
|
|
/* g_debug ("%s: could not get realpath for '%s': %s", */
|
|
/* __func__, dir, g_strerror(errno)); */
|
|
g_free (dir);
|
|
return NULL;
|
|
} else
|
|
g_free (dir);
|
|
|
|
return g_strdup (resolved);
|
|
}
|
|
|
|
GQuark
|
|
mu_util_error_quark (void)
|
|
{
|
|
static GQuark error_domain = 0;
|
|
|
|
if (G_UNLIKELY(error_domain == 0))
|
|
error_domain = g_quark_from_static_string
|
|
("mu-error-quark");
|
|
|
|
return error_domain;
|
|
}
|
|
|
|
gboolean
|
|
mu_util_check_dir (const gchar* path, gboolean readable, gboolean writeable)
|
|
{
|
|
int mode;
|
|
struct stat statbuf;
|
|
|
|
if (!path)
|
|
return FALSE;
|
|
|
|
mode = F_OK | (readable ? R_OK : 0) | (writeable ? W_OK : 0);
|
|
|
|
if (access (path, mode) != 0) {
|
|
/* g_debug ("Cannot access %s: %s", path, g_strerror (errno)); */
|
|
return FALSE;
|
|
}
|
|
|
|
if (stat (path, &statbuf) != 0) {
|
|
/* g_debug ("Cannot stat %s: %s", path, g_strerror (errno)); */
|
|
return FALSE;
|
|
}
|
|
|
|
return S_ISDIR(statbuf.st_mode) ? TRUE: FALSE;
|
|
}
|
|
|
|
|
|
gchar*
|
|
mu_util_guess_maildir (void)
|
|
{
|
|
const gchar *mdir1, *home;
|
|
|
|
/* first, try MAILDIR */
|
|
mdir1 = g_getenv ("MAILDIR");
|
|
|
|
if (mdir1 && mu_util_check_dir (mdir1, TRUE, FALSE))
|
|
return g_strdup (mdir1);
|
|
|
|
/* then, try <home>/Maildir */
|
|
home = g_get_home_dir();
|
|
if (home) {
|
|
char *mdir2;
|
|
mdir2 = g_strdup_printf ("%s%cMaildir",
|
|
home, G_DIR_SEPARATOR);
|
|
if (mu_util_check_dir (mdir2, TRUE, FALSE))
|
|
return mdir2;
|
|
g_free (mdir2);
|
|
}
|
|
|
|
/* nope; nothing found */
|
|
return NULL;
|
|
}
|
|
|
|
gboolean
|
|
mu_util_create_dir_maybe (const gchar *path, mode_t mode, gboolean nowarn)
|
|
{
|
|
struct stat statbuf;
|
|
|
|
g_return_val_if_fail (path, FALSE);
|
|
|
|
/* if it exists, it must be a readable dir */
|
|
if (stat (path, &statbuf) == 0) {
|
|
if ((!S_ISDIR(statbuf.st_mode)) ||
|
|
(access (path, W_OK|R_OK) != 0)) {
|
|
if (!nowarn)
|
|
g_warning ("not a read-writable"
|
|
"directory: %s", path);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (g_mkdir_with_parents (path, mode) != 0) {
|
|
if (!nowarn)
|
|
g_warning ("failed to create %s: %s",
|
|
path, g_strerror(errno));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
mu_util_supports (MuFeature feature)
|
|
{
|
|
/* check for Guile support */
|
|
#ifndef BUILD_GUILE
|
|
if (feature & MU_FEATURE_GUILE)
|
|
return FALSE;
|
|
#endif /*BUILD_GUILE*/
|
|
|
|
/* check for Gnuplot */
|
|
if (feature & MU_FEATURE_GNUPLOT)
|
|
if (!mu_util_program_in_path ("gnuplot"))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
gboolean
|
|
mu_util_program_in_path (const char *prog)
|
|
{
|
|
gchar *path;
|
|
|
|
g_return_val_if_fail (prog, FALSE);
|
|
|
|
path = g_find_program_in_path (prog);
|
|
g_free (path);
|
|
|
|
return (path != NULL) ? TRUE : FALSE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Set the child to a group leader to avoid being killed when the
|
|
* parent group is killed.
|
|
*/
|
|
static void
|
|
maybe_setsid (G_GNUC_UNUSED gpointer user_data)
|
|
{
|
|
#if HAVE_SETSID
|
|
setsid();
|
|
#endif /*HAVE_SETSID*/
|
|
}
|
|
|
|
gboolean
|
|
mu_util_play (const char *path, GError **err)
|
|
{
|
|
GFile *gf;
|
|
gboolean rv, is_native;
|
|
const gchar *argv[3];
|
|
const char *prog;
|
|
|
|
g_return_val_if_fail (path, FALSE);
|
|
|
|
gf = g_file_new_for_path(path);
|
|
is_native = g_file_is_native(gf);
|
|
g_object_unref(gf);
|
|
|
|
if (!is_native) {
|
|
mu_util_g_set_error (err, MU_ERROR_FILE_CANNOT_EXECUTE,
|
|
"'%s' is not a native file", path);
|
|
return FALSE;
|
|
}
|
|
|
|
prog = g_getenv ("MU_PLAY_PROGRAM");
|
|
if (!prog) {
|
|
#ifdef __APPLE__
|
|
prog = "open";
|
|
#else
|
|
prog = "xdg-open";
|
|
#endif /*!__APPLE__*/
|
|
}
|
|
|
|
if (!mu_util_program_in_path (prog)) {
|
|
mu_util_g_set_error (err, MU_ERROR_FILE_CANNOT_EXECUTE,
|
|
"cannot find '%s' in path", prog);
|
|
return FALSE;
|
|
}
|
|
|
|
argv[0] = prog;
|
|
argv[1] = path;
|
|
argv[2] = NULL;
|
|
|
|
err = NULL;
|
|
rv = g_spawn_async (NULL, (gchar**)&argv, NULL,
|
|
G_SPAWN_SEARCH_PATH, maybe_setsid,
|
|
NULL, NULL, err);
|
|
return rv;
|
|
}
|
|
|
|
|
|
unsigned char
|
|
mu_util_get_dtype (const char *path, gboolean use_lstat)
|
|
{
|
|
int res;
|
|
struct stat statbuf;
|
|
|
|
g_return_val_if_fail (path, DT_UNKNOWN);
|
|
|
|
if (use_lstat)
|
|
res = lstat (path, &statbuf);
|
|
else
|
|
res = stat (path, &statbuf);
|
|
|
|
if (res != 0) {
|
|
g_warning ("%sstat failed on %s: %s",
|
|
use_lstat ? "l" : "", path, g_strerror(errno));
|
|
return DT_UNKNOWN;
|
|
}
|
|
|
|
/* we only care about dirs, regular files and links */
|
|
if (S_ISREG (statbuf.st_mode))
|
|
return DT_REG;
|
|
else if (S_ISDIR (statbuf.st_mode))
|
|
return DT_DIR;
|
|
else if (S_ISLNK (statbuf.st_mode))
|
|
return DT_LNK;
|
|
|
|
return DT_UNKNOWN;
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
|
mu_util_locale_is_utf8 (void)
|
|
{
|
|
const gchar *dummy;
|
|
static int is_utf8 = -1;
|
|
|
|
if (G_UNLIKELY(is_utf8 == -1))
|
|
is_utf8 = g_get_charset(&dummy) ? 1 : 0;
|
|
|
|
return is_utf8 ? TRUE : FALSE;
|
|
}
|
|
|
|
gboolean
|
|
mu_util_fputs_encoded (const char *str, FILE *stream)
|
|
{
|
|
int rv;
|
|
char *conv;
|
|
|
|
g_return_val_if_fail (stream, FALSE);
|
|
|
|
/* g_get_charset return TRUE when the locale is UTF8 */
|
|
if (mu_util_locale_is_utf8())
|
|
return fputs (str, stream) == EOF ? FALSE : TRUE;
|
|
|
|
/* charset is _not_ utf8, so we need to convert it */
|
|
conv = NULL;
|
|
if (g_utf8_validate (str, -1, NULL))
|
|
conv = g_locale_from_utf8 (str, -1, NULL, NULL, NULL);
|
|
|
|
/* conversion failed; this happens because is some cases GMime may gives
|
|
* us non-UTF-8 strings from e.g. wrongly encoded message-subjects; if
|
|
* so, we escape the string */
|
|
conv = conv ? conv : g_strescape (str, "\n\t");
|
|
rv = conv ? fputs (conv, stream) : EOF;
|
|
g_free (conv);
|
|
|
|
return (rv == EOF) ? FALSE : TRUE;
|
|
}
|
|
|
|
|
|
|
|
gboolean
|
|
mu_util_g_set_error (GError **err, MuError errcode, const char *frm, ...)
|
|
{
|
|
va_list ap;
|
|
char *msg;
|
|
|
|
/* don't bother with NULL errors, or errors already set */
|
|
if (!err || *err)
|
|
return FALSE;
|
|
|
|
msg = NULL;
|
|
va_start (ap, frm);
|
|
g_vasprintf (&msg, frm, ap);
|
|
va_end (ap);
|
|
|
|
g_set_error (err, MU_ERROR_DOMAIN, errcode, "%s", msg);
|
|
|
|
g_free (msg);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
__attribute__((format(printf, 2, 0))) static gboolean
|
|
print_args (FILE *stream, const char *frm, va_list args)
|
|
{
|
|
gchar *str;
|
|
gboolean rv;
|
|
|
|
str = g_strdup_vprintf (frm, args);
|
|
|
|
rv = mu_util_fputs_encoded (str, stream);
|
|
|
|
g_free (str);
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
gboolean
|
|
mu_util_print_encoded (const char *frm, ...)
|
|
{
|
|
va_list args;
|
|
gboolean rv;
|
|
|
|
g_return_val_if_fail (frm, FALSE);
|
|
|
|
va_start (args, frm);
|
|
rv = print_args (stdout, frm, args);
|
|
va_end (args);
|
|
|
|
return rv;
|
|
}
|
|
|
|
char*
|
|
mu_str_summarize (const char* str, size_t max_lines)
|
|
{
|
|
char *summary;
|
|
size_t nl_seen;
|
|
unsigned i,j;
|
|
gboolean last_was_blank;
|
|
|
|
g_return_val_if_fail (str, NULL);
|
|
g_return_val_if_fail (max_lines > 0, NULL);
|
|
|
|
/* len for summary <= original len */
|
|
summary = g_new (gchar, strlen(str) + 1);
|
|
|
|
/* copy the string up to max_lines lines, replace CR/LF/tab with
|
|
* single space */
|
|
for (i = j = 0, nl_seen = 0, last_was_blank = TRUE;
|
|
nl_seen < max_lines && str[i] != '\0'; ++i) {
|
|
|
|
if (str[i] == '\n' || str[i] == '\r' ||
|
|
str[i] == '\t' || str[i] == ' ' ) {
|
|
|
|
if (str[i] == '\n')
|
|
++nl_seen;
|
|
|
|
/* no double-blanks or blank at end of str */
|
|
if (!last_was_blank && str[i+1] != '\0')
|
|
summary[j++] = ' ';
|
|
|
|
last_was_blank = TRUE;
|
|
} else {
|
|
|
|
summary[j++] = str[i];
|
|
last_was_blank = FALSE;
|
|
}
|
|
}
|
|
|
|
summary[j] = '\0';
|
|
return summary;
|
|
}
|