+
+int unhexchar(char c) {
+
+ if (c >= '0' && c <= '9')
+ return c - '0';
+
+ if (c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+
+ if (c >= 'A' && c <= 'F')
+ return c - 'A' + 10;
+
+ return -1;
+}
+
+char octchar(int x) {
+ return '0' + (x & 7);
+}
+
+int unoctchar(char c) {
+
+ if (c >= '0' && c <= '7')
+ return c - '0';
+
+ return -1;
+}
+
+char *cescape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ /* Does C style string escaping. */
+
+ if (!(r = new(char, strlen(s)*4 + 1)))
+ return NULL;
+
+ for (f = s, t = r; *f; f++)
+
+ switch (*f) {
+
+ case '\a':
+ *(t++) = '\\';
+ *(t++) = 'a';
+ break;
+ case '\b':
+ *(t++) = '\\';
+ *(t++) = 'b';
+ break;
+ case '\f':
+ *(t++) = '\\';
+ *(t++) = 'f';
+ break;
+ case '\n':
+ *(t++) = '\\';
+ *(t++) = 'n';
+ break;
+ case '\r':
+ *(t++) = '\\';
+ *(t++) = 'r';
+ break;
+ case '\t':
+ *(t++) = '\\';
+ *(t++) = 't';
+ break;
+ case '\v':
+ *(t++) = '\\';
+ *(t++) = 'v';
+ break;
+ case '\\':
+ *(t++) = '\\';
+ *(t++) = '\\';
+ break;
+ case '"':
+ *(t++) = '\\';
+ *(t++) = '"';
+ break;
+ case '\'':
+ *(t++) = '\\';
+ *(t++) = '\'';
+ break;
+
+ default:
+ /* For special chars we prefer octal over
+ * hexadecimal encoding, simply because glib's
+ * g_strescape() does the same */
+ if ((*f < ' ') || (*f >= 127)) {
+ *(t++) = '\\';
+ *(t++) = octchar((unsigned char) *f >> 6);
+ *(t++) = octchar((unsigned char) *f >> 3);
+ *(t++) = octchar((unsigned char) *f);
+ } else
+ *(t++) = *f;
+ break;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *cunescape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ /* Undoes C style string escaping */
+
+ if (!(r = new(char, strlen(s)+1)))
+ return r;
+
+ for (f = s, t = r; *f; f++) {
+
+ if (*f != '\\') {
+ *(t++) = *f;
+ continue;
+ }
+
+ f++;
+
+ switch (*f) {
+
+ case 'a':
+ *(t++) = '\a';
+ break;
+ case 'b':
+ *(t++) = '\b';
+ break;
+ case 'f':
+ *(t++) = '\f';
+ break;
+ case 'n':
+ *(t++) = '\n';
+ break;
+ case 'r':
+ *(t++) = '\r';
+ break;
+ case 't':
+ *(t++) = '\t';
+ break;
+ case 'v':
+ *(t++) = '\v';
+ break;
+ case '\\':
+ *(t++) = '\\';
+ break;
+ case '"':
+ *(t++) = '"';
+ break;
+ case '\'':
+ *(t++) = '\'';
+ break;
+
+ case 'x': {
+ /* hexadecimal encoding */
+ int a, b;
+
+ if ((a = unhexchar(f[1])) < 0 ||
+ (b = unhexchar(f[2])) < 0) {
+ /* Invalid escape code, let's take it literal then */
+ *(t++) = '\\';
+ *(t++) = 'x';
+ } else {
+ *(t++) = (char) ((a << 4) | b);
+ f += 2;
+ }
+
+ break;
+ }
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7': {
+ /* octal encoding */
+ int a, b, c;
+
+ if ((a = unoctchar(f[0])) < 0 ||
+ (b = unoctchar(f[1])) < 0 ||
+ (c = unoctchar(f[2])) < 0) {
+ /* Invalid escape code, let's take it literal then */
+ *(t++) = '\\';
+ *(t++) = f[0];
+ } else {
+ *(t++) = (char) ((a << 6) | (b << 3) | c);
+ f += 2;
+ }
+
+ break;
+ }
+
+ case 0:
+ /* premature end of string.*/
+ *(t++) = '\\';
+ goto finish;
+
+ default:
+ /* Invalid escape code, let's take it literal then */
+ *(t++) = '\\';
+ *(t++) = 'f';
+ break;
+ }
+ }
+
+finish:
+ *t = 0;
+ return r;
+}
+
+
+char *xescape(const char *s, const char *bad) {
+ char *r, *t;
+ const char *f;
+
+ /* Escapes all chars in bad, in addition to \ and all special
+ * chars, in \xFF style escaping. May be reversed with
+ * cunescape. */
+
+ if (!(r = new(char, strlen(s)*4+1)))
+ return NULL;
+
+ for (f = s, t = r; *f; f++) {
+
+ if ((*f < ' ') || (*f >= 127) ||
+ (*f == '\\') || strchr(bad, *f)) {
+ *(t++) = '\\';
+ *(t++) = 'x';
+ *(t++) = hexchar(*f >> 4);
+ *(t++) = hexchar(*f);
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *bus_path_escape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ /* Escapes all chars that D-Bus' object path cannot deal
+ * with. Can be reverse with bus_path_unescape() */
+
+ if (!(r = new(char, strlen(s)*3+1)))
+ return NULL;
+
+ for (f = s, t = r; *f; f++) {
+
+ if (!(*f >= 'A' && *f <= 'Z') &&
+ !(*f >= 'a' && *f <= 'z') &&
+ !(*f >= '0' && *f <= '9')) {
+ *(t++) = '_';
+ *(t++) = hexchar(*f >> 4);
+ *(t++) = hexchar(*f);
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *bus_path_unescape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ if (!(r = new(char, strlen(s)+1)))
+ return NULL;
+
+ for (f = s, t = r; *f; f++) {
+
+ if (*f == '_') {
+ int a, b;
+
+ if ((a = unhexchar(f[1])) < 0 ||
+ (b = unhexchar(f[2])) < 0) {
+ /* Invalid escape code, let's take it literal then */
+ *(t++) = '_';
+ } else {
+ *(t++) = (char) ((a << 4) | b);
+ f += 2;
+ }
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *path_kill_slashes(char *path) {
+ char *f, *t;
+ bool slash = false;
+
+ /* Removes redundant inner and trailing slashes. Modifies the
+ * passed string in-place.
+ *
+ * ///foo///bar/ becomes /foo/bar
+ */
+
+ for (f = path, t = path; *f; f++) {
+
+ if (*f == '/') {
+ slash = true;
+ continue;
+ }
+
+ if (slash) {
+ slash = false;
+ *(t++) = '/';
+ }
+
+ *(t++) = *f;
+ }
+
+ /* Special rule, if we are talking of the root directory, a
+ trailing slash is good */
+
+ if (t == path && slash)
+ *(t++) = '/';
+
+ *t = 0;
+ return path;
+}
+
+bool path_startswith(const char *path, const char *prefix) {
+ assert(path);
+ assert(prefix);
+
+ if ((path[0] == '/') != (prefix[0] == '/'))
+ return false;
+
+ for (;;) {
+ size_t a, b;
+
+ path += strspn(path, "/");
+ prefix += strspn(prefix, "/");
+
+ if (*prefix == 0)
+ return true;
+
+ if (*path == 0)
+ return false;
+
+ a = strcspn(path, "/");
+ b = strcspn(prefix, "/");
+
+ if (a != b)
+ return false;
+
+ if (memcmp(path, prefix, a) != 0)
+ return false;
+
+ path += a;
+ prefix += b;
+ }
+}
+
+char *ascii_strlower(char *path) {
+ char *p;
+
+ assert(path);
+
+ for (p = path; *p; p++)
+ if (*p >= 'A' && *p <= 'Z')
+ *p = *p - 'A' + 'a';
+
+ return p;
+}
+
+bool ignore_file(const char *filename) {
+ assert(filename);
+
+ return
+ filename[0] == '.' ||
+ endswith(filename, "~") ||
+ endswith(filename, ".rpmnew") ||
+ endswith(filename, ".rpmsave") ||
+ endswith(filename, ".rpmorig") ||
+ endswith(filename, ".dpkg-old") ||
+ endswith(filename, ".dpkg-new") ||
+ endswith(filename, ".swp");
+}
+
+static const char *const ioprio_class_table[] = {
+ [IOPRIO_CLASS_NONE] = "none",
+ [IOPRIO_CLASS_RT] = "realtime",
+ [IOPRIO_CLASS_BE] = "best-effort",
+ [IOPRIO_CLASS_IDLE] = "idle"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(ioprio_class, int);
+
+static const char *const sigchld_code_table[] = {
+ [CLD_EXITED] = "exited",
+ [CLD_KILLED] = "killed",
+ [CLD_DUMPED] = "dumped",
+ [CLD_TRAPPED] = "trapped",
+ [CLD_STOPPED] = "stopped",
+ [CLD_CONTINUED] = "continued",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int);
+
+static const char *const log_facility_table[LOG_NFACILITIES] = {
+ [LOG_FAC(LOG_KERN)] = "kern",
+ [LOG_FAC(LOG_USER)] = "user",
+ [LOG_FAC(LOG_MAIL)] = "mail",
+ [LOG_FAC(LOG_DAEMON)] = "daemon",
+ [LOG_FAC(LOG_AUTH)] = "auth",
+ [LOG_FAC(LOG_SYSLOG)] = "syslog",
+ [LOG_FAC(LOG_LPR)] = "lpr",
+ [LOG_FAC(LOG_NEWS)] = "news",
+ [LOG_FAC(LOG_UUCP)] = "uucp",
+ [LOG_FAC(LOG_CRON)] = "cron",
+ [LOG_FAC(LOG_AUTHPRIV)] = "authpriv",
+ [LOG_FAC(LOG_FTP)] = "ftp",
+ [LOG_FAC(LOG_LOCAL0)] = "local0",
+ [LOG_FAC(LOG_LOCAL1)] = "local1",
+ [LOG_FAC(LOG_LOCAL2)] = "local2",
+ [LOG_FAC(LOG_LOCAL3)] = "local3",
+ [LOG_FAC(LOG_LOCAL4)] = "local4",
+ [LOG_FAC(LOG_LOCAL5)] = "local5",
+ [LOG_FAC(LOG_LOCAL6)] = "local6",
+ [LOG_FAC(LOG_LOCAL7)] = "local7"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(log_facility, int);
+
+static const char *const log_level_table[] = {
+ [LOG_EMERG] = "emerg",
+ [LOG_ALERT] = "alert",
+ [LOG_CRIT] = "crit",
+ [LOG_ERR] = "err",
+ [LOG_WARNING] = "warning",
+ [LOG_NOTICE] = "notice",
+ [LOG_INFO] = "info",
+ [LOG_DEBUG] = "debug"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(log_level, int);
+
+static const char* const sched_policy_table[] = {
+ [SCHED_OTHER] = "other",
+ [SCHED_BATCH] = "batch",
+ [SCHED_IDLE] = "idle",
+ [SCHED_FIFO] = "fifo",
+ [SCHED_RR] = "rr"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(sched_policy, int);
+
+static const char* const rlimit_table[] = {
+ [RLIMIT_CPU] = "LimitCPU",
+ [RLIMIT_FSIZE] = "LimitFSIZE",
+ [RLIMIT_DATA] = "LimitDATA",
+ [RLIMIT_STACK] = "LimitSTACK",
+ [RLIMIT_CORE] = "LimitCORE",
+ [RLIMIT_RSS] = "LimitRSS",
+ [RLIMIT_NOFILE] = "LimitNOFILE",
+ [RLIMIT_AS] = "LimitAS",
+ [RLIMIT_NPROC] = "LimitNPROC",
+ [RLIMIT_MEMLOCK] = "LimitMEMLOCK",
+ [RLIMIT_LOCKS] = "LimitLOCKS",
+ [RLIMIT_SIGPENDING] = "LimitSIGPENDING",
+ [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE",
+ [RLIMIT_NICE] = "LimitNICE",
+ [RLIMIT_RTPRIO] = "LimitRTPRIO",
+ [RLIMIT_RTTIME] = "LimitRTTIME"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(rlimit, int);