void plugin_component_names_from_arg(const char *arg, char **plugin,
char **component)
{
- const char *dot;
- const char *end;
- size_t plugin_len;
- size_t component_len;
+ const char *arg_ch = arg;
+ char *ch;
+ bool in_component = false;
- /* Initialize both return values to NULL: not found */
- *plugin = NULL;
- *component = NULL;
-
- dot = strchr(arg, '.');
- if (!dot) {
- /* No dot */
- goto end;
- }
-
- end = arg + strlen(arg);
- plugin_len = dot - arg;
- component_len = end - dot - 1;
- if (plugin_len == 0 || component_len == 0) {
- goto end;
- }
-
- *plugin = g_malloc0(plugin_len + 1);
+ /* Initialize both return values */
+ *plugin = g_malloc0(strlen(arg) + 1);
+ ch = *plugin;
if (!*plugin) {
print_err_oom();
- goto end;
+ goto error;
}
- g_strlcpy(*plugin, arg, plugin_len + 1);
- *component = g_malloc0(component_len + 1);
+ *component = g_malloc0(strlen(arg) + 1);
if (!*component) {
print_err_oom();
- goto end;
+ goto error;
}
- g_strlcpy(*component, dot + 1, component_len + 1);
+ while (*arg_ch != '\0') {
+ switch (*arg_ch) {
+ case '\\':
+ if (arg_ch[1] == '\0') {
+ /* `\` at the end of the string */
+ *ch = *arg_ch;
+ ch++;
+ arg_ch++;
+ } else if (arg_ch[1] == '\\' || arg_ch[1] == '.') {
+ /* Escaped `\` or `.` */
+ *ch = arg_ch[1];
+ ch++;
+ arg_ch += 2;
+ } else {
+ /* Unknown escaped character (write `\` too) */
+ ch[0] = arg_ch[0];
+ ch[1] = arg_ch[1];
+ ch += 2;
+ arg_ch += 2;
+
+ }
+ continue;
+ case '.':
+ if (in_component) {
+ goto error;
+ }
+
+ in_component = true;
+ ch = *component;
+ arg_ch++;
+ break;
+ default:
+ *ch = *arg_ch;
+ ch++;
+ arg_ch++;
+ break;
+ }
+ }
+
+ if (strlen(*plugin) == 0 || strlen(*component) == 0) {
+ goto error;
+ }
+
+ goto end;
+
+error:
+ g_free(*plugin);
+ *plugin = NULL;
+ g_free(*component);
+ *component = NULL;
end:
return;