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-rw-r--r--src/shared/util.c20
-rw-r--r--src/shared/util.h1
2 files changed, 17 insertions, 4 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index af975956db..946b7d53f9 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -1562,19 +1562,25 @@ char *cescape(const char *s) {
return r;
}
-char *cunescape_length(const char *s, size_t length) {
+char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix) {
char *r, *t;
const char *f;
+ size_t pl;
assert(s);
- /* Undoes C style string escaping */
+ /* Undoes C style string escaping, and optionally prefixes it. */
+
+ pl = prefix ? strlen(prefix) : 0;
- r = new(char, length+1);
+ r = new(char, pl+length+1);
if (!r)
return r;
- for (f = s, t = r; f < s + length; f++) {
+ if (prefix)
+ memcpy(r, prefix, pl);
+
+ for (f = s, t = r + pl; f < s + length; f++) {
if (*f != '\\') {
*(t++) = *f;
@@ -1685,7 +1691,13 @@ finish:
return r;
}
+char *cunescape_length(const char *s, size_t length) {
+ return cunescape_length_with_prefix(s, length, NULL);
+}
+
char *cunescape(const char *s) {
+ assert(s);
+
return cunescape_length(s, strlen(s));
}
diff --git a/src/shared/util.h b/src/shared/util.h
index b315593bba..d5a48eb00f 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -256,6 +256,7 @@ int undecchar(char c);
char *cescape(const char *s);
char *cunescape(const char *s);
char *cunescape_length(const char *s, size_t length);
+char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix);
char *xescape(const char *s, const char *bad);