}
}
}
+
+int is_encoding_utf8(const char *name)
+{
+ if (!name)
+ return 1;
+ if (!strcasecmp(name, "utf-8") || !strcasecmp(name, "utf8"))
+ return 1;
+ return 0;
+}
+
+/*
+ * Given a buffer and its encoding, return it re-encoded
+ * with iconv. If the conversion fails, returns NULL.
+ */
+#ifndef NO_ICONV
+char *reencode_string(const char *in, const char *out_encoding, const char *in_encoding)
+{
+ iconv_t conv;
+ size_t insz, outsz, outalloc;
+ char *out, *outpos, *cp;
+
+ if (!in_encoding)
+ return NULL;
+ conv = iconv_open(out_encoding, in_encoding);
+ if (conv == (iconv_t) -1)
+ return NULL;
+ insz = strlen(in);
+ outsz = insz;
+ outalloc = outsz + 1; /* for terminating NUL */
+ out = xmalloc(outalloc);
+ outpos = out;
+ cp = (char *)in;
+
+ while (1) {
+ size_t cnt = iconv(conv, &cp, &insz, &outpos, &outsz);
+
+ if (cnt == -1) {
+ size_t sofar;
+ if (errno != E2BIG) {
+ free(out);
+ iconv_close(conv);
+ return NULL;
+ }
+ /* insz has remaining number of bytes.
+ * since we started outsz the same as insz,
+ * it is likely that insz is not enough for
+ * converting the rest.
+ */
+ sofar = outpos - out;
+ outalloc = sofar + insz * 2 + 32;
+ out = xrealloc(out, outalloc);
+ outpos = out + sofar;
+ outsz = outalloc - sofar - 1;
+ }
+ else {
+ *outpos = '\0';
+ break;
+ }
+ }
+ iconv_close(conv);
+ return out;
+}
+#endif