+SystemExec::SystemExec (std::string command, const std::map<char, std::string> subs)
+{
+ init ();
+ make_argp_escaped(command, subs);
+
+#ifdef PLATFORM_WINDOWS
+ if (argp[0] && strlen (argp[0]) > 0) {
+ std::string wa = argp[0];
+ // only add quotes to command if required..
+ if (argp[0][0] != '"'
+ && argp[0][strlen(argp[0])-1] != '"'
+ && strchr(argp[0], ' ')) {
+ wa = "\"";
+ wa += argp[0];
+ wa += "\"";
+ }
+ // ...but always quote all args
+ for (int i = 1; argp[i]; ++i) {
+ std::string tmp (argp[i]);
+ while (tmp.find("\"") != std::string::npos)
+ tmp.replace(tmp.find("\""), 1, "\\\"");
+ wa += " \"";
+ wa += tmp;
+ wa += '"';
+ }
+ w_args = strdup(wa.c_str());
+ }
+#else
+ if (find_file (Searchpath (Glib::getenv ("PATH")), argp[0], cmd)) {
+ // argp[0] exists in $PATH` - set it to the actual path where it was found
+ free (argp[0]);
+ argp[0] = strdup(cmd.c_str ());
+ }
+ // else argp[0] not found in path - leave it as-is, it might be an absolute path
+
+ // Glib::find_program_in_path () is only available in Glib >= 2.28
+ // cmd = Glib::find_program_in_path (argp[0]);
+#endif
+ make_envp();
+}
+
+void
+SystemExec::make_argp_escaped(std::string command, const std::map<char, std::string> subs)
+{
+
+ int inquotes = 0;
+ int n = 0;
+ size_t i = 0;
+ std::string arg = "";
+
+ argp = (char **) malloc(sizeof(char *));
+
+ for (i = 0; i <= command.length(); i++) { // include terminating '\0'
+ char c = command.c_str()[i];
+ if (inquotes) {
+ if (c == '"') {
+ inquotes = 0;
+ } else {
+ // still in quotes - just copy
+ arg += c;
+ }
+ } else switch (c) {
+ case '%' :
+ c = command.c_str()[++i];
+ if (c == '%' || c == '\0') {
+ // "%%", "%" at end-of-string => "%"
+ arg += '%';
+ } else {
+ // search subs for string to substitute for char
+ std::map<char, std::string>::const_iterator s = subs.find(c);
+ if (s != subs.end()) {
+ // found substitution
+ arg += s->second;
+ } else {
+ // not a valid substitution, just copy
+ arg += '%';
+ arg += c;
+ }
+ }
+ break;
+ case '\\':
+ c = command.c_str()[++i];
+ switch (c) {
+ case ' ' :
+ case '"' : arg += c; break; // "\\", "\" at end-of-string => "\"
+ case '\0':
+ case '\\': arg += '\\'; break;
+ default : arg += '\\'; arg += c; break;
+ }
+ break;
+ case '"' :
+ inquotes = 1;
+ break;
+ case ' ' :
+ case '\t':
+ case '\0':
+ if (arg.length() > 0) {
+ // if there wasn't already a space or tab, start a new parameter
+ argp = (char **) realloc(argp, (n + 2) * sizeof(char *));
+ argp[n++] = strdup (arg.c_str());
+ arg = "";
+ }
+ break;
+ default :
+ arg += c;
+ break;
+ }
+ }
+ argp[n] = NULL;
+}
+