1 files changed, 54 insertions, 0 deletions
diff --git a/sanitize.c b/sanitize.c
new file mode 100644
index 0000000..50aee3b
--- /dev/null
+++ b/sanitize.c
@@ -0,0 +1,54 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include "utils.h"
+#include <dynstr.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdio.h>
+
+char *sanitize(const char *s)
+{
+    struct dynstr d;
+
+    dynstr_init(&d);
+
+    while (*s)
+    {
+        char ss[sizeof "\"\""] = {0};
+
+        switch (*s)
+        {
+            case '\'':
+                strcpy(ss, "\'\'");
+                break;
+
+            case '\"':
+                strcpy(ss, "\"\"");
+                break;
+
+            default:
+                *ss = *s;
+                break;
+        }
+
+        if (dynstr_append(&d, "%s", ss))
+        {
+            fprintf(stderr, "%s: dynstr_append failed\n", __func__);
+            goto failure;
+        }
+
+        s++;
+    }
+
+    if (!d.str && dynstr_append(&d, "%c", '\0'))
+    {
+        fprintf(stderr, "%s: dynstr_append failed\n", __func__);
+        goto failure;
+    }
+
+    return d.str;
+
+failure:
+    dynstr_free(&d);
+    return NULL;
+}