[PATCH v3 3/6] util: make sanitize string available in string util for reuse

[Jani Nikula]

No functional changes.
---
 notmuch-search.c   | 19 -------------------
 util/string-util.c | 22 ++++++++++++++++++++++
 util/string-util.h |  7 +++++++
 3 files changed, 29 insertions(+), 19 deletions(-)

diff --git a/notmuch-search.c b/notmuch-search.c
index 0262eb3..bc9be45 100644
--- a/notmuch-search.c
+++ b/notmuch-search.c
@@ -30,25 +30,6 @@ typedef enum {
     OUTPUT_TAGS
 } output_t;
 
-static char *
-sanitize_string (const void *ctx, const char *str)
-{
-    char *out, *loop;
-
-    if (NULL == str)
-	return NULL;
-
-    loop = out = talloc_strdup (ctx, str);
-
-    for (; *loop; loop++) {
-	if (*loop == '\t' || *loop == '\n')
-	    *loop = ' ';
-	else if ((unsigned char)(*loop) < 32)
-	    *loop = '?';
-    }
-    return out;
-}
-
 /* Return two stable query strings that identify exactly the matched
  * and unmatched messages currently in thread.  If there are no
  * matched or unmatched messages, the returned buffers will be
diff --git a/util/string-util.c b/util/string-util.c
index a5622d7..9e2f728 100644
--- a/util/string-util.c
+++ b/util/string-util.c
@@ -37,6 +37,28 @@ strtok_len (char *s, const char *delim, size_t *len)
     return *len ? s : NULL;
 }
 
+char *
+sanitize_string (const void *ctx, const char *str)
+{
+    char *out, *loop;
+
+    if (! str)
+	return NULL;
+
+    out = talloc_strdup (ctx, str);
+    if (! out)
+	return NULL;
+
+    for (loop = out; *loop; loop++) {
+	if (*loop == '\t' || *loop == '\n')
+	    *loop = ' ';
+	else if ((unsigned char)(*loop) < 32)
+	    *loop = '?';
+    }
+
+    return out;
+}
+
 static int
 is_unquoted_terminator (unsigned char c)
 {
diff --git a/util/string-util.h b/util/string-util.h
index 0194607..8a3ad19 100644
--- a/util/string-util.h
+++ b/util/string-util.h
@@ -19,6 +19,13 @@
 
 char *strtok_len (char *s, const char *delim, size_t *len);
 
+/* Return a talloced string with str sanitized.
+ *
+ * Whitespace characters (tabs and newlines) are replaced with spaces,
+ * non-printable characters with question marks.
+ */
+char *sanitize_string (const void *ctx, const char *str);
+
 /* Construct a boolean term query with the specified prefix (e.g.,
  * "id") and search term, quoting term as necessary.  Specifically, if
  * term contains any non-printable ASCII characters, non-ASCII
-- 
1.8.5.2