Add a couple of useful string functions.

Change-Id: I158f69917bab5f15482dd8f2b66b36a4cc0f11ad

1 files changed, 24 insertions, 0 deletions

diff --git a/libutils/String8.cpp b/libutils/String8.cpp
index 49340bb..9092cbc 100644
--- a/libutils/String8.cpp
+++ b/libutils/String8.cpp
@@ -408,6 +408,30 @@ ssize_t String8::find(const char* other, size_t start) const
     return p ? p-mString : -1;
 }
 
+bool String8::removeAll(const char* other) {
+    ssize_t index = find(other);
+    if (index < 0) return false;
+
+    char* buf = lockBuffer(size());
+    if (!buf) return false; // out of memory
+
+    size_t skip = strlen(other);
+    size_t len = size();
+    size_t tail = index;
+    while (size_t(index) < len) {
+        ssize_t next = find(other, index + skip);
+        if (next < 0) {
+            next = len;
+        }
+
+        memcpy(buf + tail, buf + index + skip, next - index - skip);
+        tail += next - index - skip;
+        index = next;
+    }
+    unlockBuffer(tail);
+    return true;
+}
+
 void String8::toLower()
 {
     toLower(0, size());