+#undef I3__FILE__
+#define I3__FILE__ "util.c"
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
*
- * © 2009-2011 Michael Stapelberg and contributors
- *
- * See file LICENSE for license information.
- *
- * util.c: Utility functions, which can be useful everywhere.
+ * util.c: Utility functions, which can be useful everywhere within i3 (see
+ * also libi3).
*
*/
+#include "all.h"
+
#include <sys/wait.h>
#include <stdarg.h>
-#include <iconv.h>
#if defined(__OpenBSD__)
#include <sys/cdefs.h>
#endif
#include <yajl/yajl_version.h>
#include <libgen.h>
-#include "all.h"
-
-static iconv_t conversion_descriptor = 0;
+#define SN_API_NOT_YET_FROZEN 1
+#include <libsn/sn-launcher.h>
int min(int a, int b) {
return (a < b ? a : b);
return ((*destination = new_value) != old_value);
}
-/*
- * The s* functions (safe) are wrappers around malloc, strdup, …, which exits if one of
- * the called functions returns NULL, meaning that there is no more memory available
- *
- */
-void *smalloc(size_t size) {
- void *result = malloc(size);
- exit_if_null(result, "Error: out of memory (malloc(%zd))\n", size);
- return result;
-}
-
-void *scalloc(size_t size) {
- void *result = calloc(size, 1);
- exit_if_null(result, "Error: out of memory (calloc(%zd))\n", size);
- return result;
-}
-
-void *srealloc(void *ptr, size_t size) {
- void *result = realloc(ptr, size);
- exit_if_null(result, "Error: out memory (realloc(%zd))\n", size);
- return result;
-}
-
-char *sstrdup(const char *str) {
- char *result = strdup(str);
- exit_if_null(result, "Error: out of memory (strdup())\n");
- return result;
-}
-
-/*
- * Starts the given application by passing it through a shell. We use double fork
- * to avoid zombie processes. As the started application’s parent exits (immediately),
- * the application is reparented to init (process-id 1), which correctly handles
- * childs, so we don’t have to do it :-).
- *
- * The shell is determined by looking for the SHELL environment variable. If it
- * does not exist, /bin/sh is used.
- *
- */
-void start_application(const char *command) {
- LOG("executing: %s\n", command);
- if (fork() == 0) {
- /* Child process */
- setsid();
- if (fork() == 0) {
- /* Stores the path of the shell */
- static const char *shell = NULL;
-
- if (shell == NULL)
- if ((shell = getenv("SHELL")) == NULL)
- shell = "/bin/sh";
-
- /* This is the child */
- execl(shell, shell, "-c", command, (void*)NULL);
- /* not reached */
- }
- exit(0);
- }
- wait(0);
-}
-
/*
* exec()s an i3 utility, for example the config file migration script or
* i3-nagbar. This function first searches $PATH for the given utility named,
* argv[0]’s dirname */
char *pathbuf = strdup(start_argv[0]);
char *dir = dirname(pathbuf);
- asprintf(&migratepath, "%s/%s", dir, name);
+ sasprintf(&migratepath, "%s/%s", dir, name);
argv[0] = migratepath;
execvp(migratepath, argv);
char buffer[BUFSIZ];
if (readlink("/proc/self/exe", buffer, BUFSIZ) == -1) {
warn("could not read /proc/self/exe");
- exit(1);
+ _exit(1);
}
dir = dirname(buffer);
- asprintf(&migratepath, "%s/%s", dir, name);
+ sasprintf(&migratepath, "%s/%s", dir, name);
argv[0] = migratepath;
execvp(migratepath, argv);
#endif
warn("Could not start %s", name);
- exit(2);
+ _exit(2);
}
/*
}
}
-/*
- * Converts the given string to UCS-2 big endian for use with
- * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen,
- * a buffer containing the UCS-2 encoded string (16 bit per glyph) is
- * returned. It has to be freed when done.
- *
- */
-char *convert_utf8_to_ucs2(char *input, int *real_strlen) {
- size_t input_size = strlen(input) + 1;
- /* UCS-2 consumes exactly two bytes for each glyph */
- int buffer_size = input_size * 2;
-
- char *buffer = smalloc(buffer_size);
- size_t output_size = buffer_size;
- /* We need to use an additional pointer, because iconv() modifies it */
- char *output = buffer;
-
- /* We convert the input into UCS-2 big endian */
- if (conversion_descriptor == 0) {
- conversion_descriptor = iconv_open("UCS-2BE", "UTF-8");
- if (conversion_descriptor == 0) {
- fprintf(stderr, "error opening the conversion context\n");
- exit(1);
- }
- }
-
- /* Get the conversion descriptor back to original state */
- iconv(conversion_descriptor, NULL, NULL, NULL, NULL);
-
- /* Convert our text */
- int rc = iconv(conversion_descriptor, (void*)&input, &input_size, &output, &output_size);
- if (rc == (size_t)-1) {
- perror("Converting to UCS-2 failed");
- if (real_strlen != NULL)
- *real_strlen = 0;
- return NULL;
- }
-
- if (real_strlen != NULL)
- *real_strlen = ((buffer_size - output_size) / 2) - 1;
-
- return buffer;
-}
-
/*
* This function resolves ~ in pathnames.
* It may resolve wildcards in the first part of the path, but if no match
*
*/
char *get_process_filename(const char *prefix) {
- char *dir = getenv("XDG_RUNTIME_DIR");
+ /* dir stores the directory path for this and all subsequent calls so that
+ * we only create a temporary directory once per i3 instance. */
+ static char *dir = NULL;
if (dir == NULL) {
- struct passwd *pw = getpwuid(getuid());
- const char *username = pw ? pw->pw_name : "unknown";
- if (asprintf(&dir, "/tmp/i3-%s", username) == -1) {
- perror("asprintf()");
- return NULL;
- }
- } else {
- char *tmp;
- if (asprintf(&tmp, "%s/i3", dir) == -1) {
- perror("asprintf()");
- return NULL;
- }
- dir = tmp;
- }
- if (!path_exists(dir)) {
- if (mkdir(dir, 0700) == -1) {
- perror("mkdir()");
- return NULL;
+ /* Check if XDG_RUNTIME_DIR is set. If so, we use XDG_RUNTIME_DIR/i3 */
+ if ((dir = getenv("XDG_RUNTIME_DIR"))) {
+ char *tmp;
+ sasprintf(&tmp, "%s/i3", dir);
+ dir = tmp;
+ if (!path_exists(dir)) {
+ if (mkdir(dir, 0700) == -1) {
+ perror("mkdir()");
+ return NULL;
+ }
+ }
+ } else {
+ /* If not, we create a (secure) temp directory using the template
+ * /tmp/i3-<user>.XXXXXX */
+ struct passwd *pw = getpwuid(getuid());
+ const char *username = pw ? pw->pw_name : "unknown";
+ sasprintf(&dir, "/tmp/i3-%s.XXXXXX", username);
+ /* mkdtemp modifies dir */
+ if (mkdtemp(dir) == NULL) {
+ perror("mkdtemp()");
+ return NULL;
+ }
}
}
char *filename;
- if (asprintf(&filename, "%s/%s.%d", dir, prefix, getpid()) == -1) {
- perror("asprintf()");
- filename = NULL;
- }
-
- free(dir);
+ sasprintf(&filename, "%s/%s.%d", dir, prefix, getpid());
return filename;
}
#define y(x, ...) yajl_gen_ ## x (gen, ##__VA_ARGS__)
#define ystr(str) yajl_gen_string(gen, (unsigned char*)str, strlen(str))
-char *store_restart_layout() {
+char *store_restart_layout(void) {
setlocale(LC_NUMERIC, "C");
#if YAJL_MAJOR >= 2
yajl_gen gen = yajl_gen_alloc(NULL);
if (n == -1) {
perror("write()");
free(filename);
+ close(fd);
return NULL;
}
if (n == 0) {
printf("write == 0?\n");
free(filename);
+ close(fd);
return NULL;
}
written += n;
char *restart_filename = forget_layout ? NULL : store_restart_layout();
kill_configerror_nagbar(true);
+ kill_commanderror_nagbar(true);
restore_geometry();
}
#endif
-
-#if defined(__APPLE__)
-
-/*
- * Taken from FreeBSD
- * Returns a pointer to a new string which is a duplicate of the
- * string, but only copies at most n characters.
- *
- */
-char *strndup(const char *str, size_t n) {
- size_t len;
- char *copy;
-
- for (len = 0; len < n && str[len]; len++)
- continue;
-
- if ((copy = malloc(len + 1)) == NULL)
- return (NULL);
- memcpy(copy, str, len);
- copy[len] = '\0';
- return (copy);
-}
-
-#endif
projects / i3 / i3 / blobdiff