1 files changed, 97 insertions, 0 deletions
diff --git a/common/buffer.h b/common/buffer.h
new file mode 100644
index 0000000..e9a6b8a
--- /dev/null
+++ b/common/buffer.h
@@ -0,0 +1,97 @@
+
+#ifndef _BUFFER_H_
+#define _BUFFER_H_
+
+/* -----------------------------------------------------------------------
+ * Memory Buffers
+ */
+
+struct ha_buffer_internal;
+
+/* A buffer which owns memory */
+typedef struct ha_buffer
+{
+    struct ha_buffer_internal* _ft;
+    struct ha_buffer_internal* _dt;
+    char* _pp;
+    char* _rp;
+}
+ha_buffer_t;
+
+/* Initializes a buffer */
+void ha_bufinit(ha_buffer_t* buf);
+
+/* Frees all memory associated with a buffer */
+void ha_buffree(ha_buffer_t* buf);
+
+/* Resets a buffer for later reuse */
+void ha_bufreset(ha_buffer_t* buf);
+
+#define ha_buflen(buf)  \
+    ((buf)->_rp - (buf)->_pp)
+
+#define ha_bufchar(buf)  \
+    ((!ha_buferr(buf) && ha_buflen(buf) > 0) ? *((buf)->_pp) : '\0' )
+
+#define ha_bufdata(buf)  \
+    ((buf)->_pp)
+
+#define ha_buferr(buf)   \
+    ((buf)->_dt == NULL)
+
+/* Buffer input functions ------------------------------------------------ */
+
+/* Read a line from an input handle */
+int ha_bufreadline(int fd, ha_buffer_t* buf);
+
+/* Parse the current line */
+char* ha_bufparseline(ha_buffer_t* buf, int trim);
+
+/* Parse a word from the current block */
+char* ha_bufparseword(ha_buffer_t* buf, const char* delims);
+
+#define ha_bufskip(buf)  \
+    ((buf)->_pp = (buf)->_rp)
+
+#define ha_bufeat(buf)   \
+    ((!ha_buferr(buf) && ha_buflen(buf) > 0) ? ++((buf)->_pp) : (buf)->_pp)
+
+/* Buffer output functions ----------------------------------------------- */
+
+/* Adds multiple strings together */
+char* ha_bufmcat(ha_buffer_t* buf, ...);
+
+/* Copies a string to the buffer */
+char* ha_bufcpy(ha_buffer_t* buf, const char* src);
+
+/* Copies a portion of a string to the buffer */
+char* ha_bufncpy(ha_buffer_t* buf, const char* src, size_t len);
+
+/* Opens up the end of the current block so it can be joined by more data */
+#define ha_bufjoin(buf) \
+    ((buf)->_rp && ((buf)->_rp != (buf)->_pp) ? (buf)->_rp-- : (buf)->_rp)
+
+#define ha_bufcat ha_bufcpy
+
+/* Buffer allocation functions ------------------------------------------- */
+
+/* Memory allocation */
+void* ha_bufmalloc(ha_buffer_t* buf, size_t bytes);
+
+void* ha_bufmemdup(ha_buffer_t* buf, const void* src, size_t bytes);
+
+/* Buffer Encoding Functions --------------------------------------------- */
+
+/* Encode an array of bytes in base 64 */
+char* ha_bufenc64(ha_buffer_t* buf, const void* src, size_t bytes);
+
+/* Decode an array of bytes from base 64 */
+void* ha_bufdec64(ha_buffer_t* buf, const char* src, size_t* bytes);
+
+/* Encode an array of bytes in hex */
+char* ha_bufenchex(ha_buffer_t* buf, const void* src, size_t bytes);
+
+/* Decode an array of bytes in hex */
+void* ha_bufdechex(ha_buffer_t* buf, const char* src, size_t* bytes);
+
+#endif /* _BUFFER_H_ */