X-Git-Url: http://git.madism.org/?p=apps%2Fmadmutt.git;a=blobdiff_plain;f=lib-lib%2Fbuffer.c;h=f27dc5102d381aec71aa2a6c24da49afd6294bb4;hp=f186bfdf29c11f958907107b749047d273f01560;hb=db3bd72d8b48f1f9b49899da081ffbec4ce2c1c6;hpb=1ee89902de184a640c171ae3285bff6882a791bd

diff --git a/lib-lib/buffer.c b/lib-lib/buffer.c
index f186bfd..f27dc51 100644
--- a/lib-lib/buffer.c
+++ b/lib-lib/buffer.c
@@ -28,6 +28,50 @@
 
 #include "lib-lib.h"
 
+void buffer_splice(buffer_t *buf, ssize_t pos, ssize_t len,
+                   const void *data, ssize_t dlen)
+{
+    if (dlen >= len)
+        buffer_extend(buf, dlen - len);
+    memmove(buf->data + pos + dlen,
+            buf->data + pos + len,
+            buf->len - pos - len);
+    memcpy(buf->data + pos, data, dlen);
+    buffer_setlen(buf, buf->len + dlen - len);
+}
+
+ssize_t buffer_addvf(buffer_t *buf, const char *fmt, va_list args)
+{
+    ssize_t len;
+    va_list ap;
+
+    va_copy(ap, args);
+    buffer_ensure(buf, BUFSIZ);
+
+    len = vsnprintf(buf->data + buf->len, buf->size - buf->len, fmt, args);
+    if (len < 0)
+        return len;
+    if (len >= buf->size - buf->len) {
+        buffer_ensure(buf, len);
+        vsnprintf(buf->data + buf->len, buf->size - buf->len, fmt, ap);
+    }
+    buf->len += len;
+    buf->data[buf->len] = '\0';
+
+    return len;
+}
+
+ssize_t buffer_addf(buffer_t *buf, const char *fmt, ...)
+{
+    ssize_t res;
+    va_list args;
+    va_start(args, fmt);
+    res = buffer_addvf(buf, fmt, args);
+    va_end(args);
+    return res;
+}
+/****** LEGACY BUFFERS *******/
+
 /*
  * Creates and initializes a BUFFER*. If passed an existing BUFFER*,
  * just initializes. Frees anything already in the buffer.