- tiny opt. bits

diff --git a/phpstr/phpstr.c b/phpstr/phpstr.c
index addbf34362b369190227ec175ef614627e3c62d7..eb2f87a715d29d6975f0528e479ee81c18da9bac 100644 (file)
--- a/phpstr/phpstr.c
+++ b/phpstr/phpstr.c
@@ -212,7 +212,7 @@ PHPSTR_API phpstr *phpstr_sub(const phpstr *buf, size_t offset, size_t length)
        if (offset >= buf->used) {
                return NULL;
        } else {
-               size_t need = (length + offset) > buf->used ? (buf->used - offset) : (length - offset);
+               size_t need = 1 + ((length + offset) > buf->used ? (buf->used - offset) : (length - offset));
                phpstr *sub = phpstr_init_ex(NULL, need, PHPSTR_INIT_PREALLOC | (buf->pmem ? PHPSTR_INIT_PERSISTENT:0));
                if (sub) {
                        if (PHPSTR_NOMEM == phpstr_append(sub, buf->data + offset, need)) {
@@ -326,7 +326,7 @@ PHPSTR_API size_t phpstr_chunk_buffer(phpstr **s, const char *data, size_t data_
        *chunk = NULL;
        
        if (!*s) {
-               *s = phpstr_init_ex(NULL, chunk_size * 2, chunk_size ? PHPSTR_INIT_PREALLOC : 0);
+               *s = phpstr_init_ex(NULL, chunk_size << 1, chunk_size ? PHPSTR_INIT_PREALLOC : 0);
        }
        storage = *s;
        
@@ -340,12 +340,10 @@ PHPSTR_API size_t phpstr_chunk_buffer(phpstr **s, const char *data, size_t data_
                return chunk_size;
        }
        
-       if (storage->used >= storage->size/2) {
-               phpstr *avail = phpstr_left(storage, storage->size/2);
-               *chunk = estrndup(PHPSTR_VAL(avail), PHPSTR_LEN(avail));
-               phpstr_free(&avail);
-               phpstr_cut(storage, 0, storage->size/2);
-               return storage->size/2;
+       if (storage->used >= (chunk_size = storage->size >> 1)) {
+               *chunk = estrndup(storage->data, chunk_size);
+               phpstr_cut(storage, 0, chunk_size);
+               return chunk_size;
        }
        
        return 0;