1 files changed, 86 insertions, 0 deletions
diff --git a/src/xml/quote.cpp b/src/xml/quote.cpp
new file mode 100644
index 000000000..b5505c5e1
--- /dev/null
+++ b/src/xml/quote.cpp
@@ -0,0 +1,86 @@
+/** \file
+ * XML quoting routines.
+ */
+
+/* Based on Lauris' repr_quote_write in repr-io.cpp.
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2004 Monash University
+ *
+ * May be modified and/or redistributed under the terms of version 2
+ * of the GNU General Public License: see the file `COPYING'.
+ */
+
+#include <string.h>
+#include <glib/gmem.h>
+
+
+/** \return strlen(xml_quote_strdup(\a val)) (without doing the malloc).
+ *  \pre val != NULL
+ */
+static size_t
+xml_quoted_strlen(char const *val)
+{
+    size_t ret = 0;
+    for (; *val != '\0'; val++) {
+        switch (*val) {
+            case '"': ret += sizeof("&quot;") - 1; break;
+            case '&': ret += sizeof("&amp;") - 1; break;
+            case '<': ret += sizeof("&lt;") - 1; break;
+            case '>': ret += sizeof("&gt;") - 1; break;
+            default: ++ret; break;
+        }
+    }
+    return ret;
+}
+
+/** Writes \a src (including the NUL byte) to \a dest, doing XML quoting as necessary.
+ *
+ *  \pre \a src != NULL.
+ *  \pre \a dest must have enough space for (xml_quoted_strlen(src) + 1) bytes.
+ */
+static void
+xml_quote(char *dest, char const *src)
+{
+#define COPY_LIT(_lit) do {	\
+	    size_t cpylen = sizeof(_lit "") - 1; \
+	    memcpy(dest, _lit, cpylen);	      \
+	    dest += cpylen;	              \
+	} while(0)
+
+    for (; *src != '\0'; ++src) {
+        switch (*src) {
+            case '"': COPY_LIT("&quot;"); break;
+            case '&': COPY_LIT("&amp;"); break;
+            case '<': COPY_LIT("&lt;"); break;
+            case '>': COPY_LIT("&gt;"); break;
+            default: *dest++ = *src; break;
+        }
+    }
+    *dest = '\0';
+
+#undef COPY_LIT
+}
+
+/** \return A g_malloc'd buffer containing an XML-quoted version of \a src.
+ *  \pre src != NULL.
+ */
+char *
+xml_quote_strdup(char const *src)
+{
+    size_t const quoted_size = xml_quoted_strlen(src) + 1;
+    char *ret = (char *) g_malloc(quoted_size);
+    xml_quote(ret, src);
+    return ret;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :