1 files changed, 63 insertions, 0 deletions
diff --git a/include/buffer.h b/include/buffer.h
new file mode 100644
index 0000000..57cd960
--- /dev/null
+++ b/include/buffer.h
@@ -0,0 +1,63 @@
+#ifndef BUFFER_H
+#define BUFFER_H
+#include <sys/types.h>   /* need type: ssize_t */
+
+typedef struct buffer {
+  char *x;
+  unsigned int p;
+  size_t n;
+  int fd;
+  ssize_t (*op)();
+} buffer;
+
+#define BUFFER_INIT(op,fd,buf,len) { (buf), 0, (len), (fd), (op) }
+#define BUFFER_SMALL 256
+#define BUFFER_INSIZE 8192
+#define BUFFER_OUTSIZE 8192
+#define BUFFER_MTUSIZE 1450
+
+extern void buffer_init(buffer *,ssize_t (*op)(),int,char *,size_t);
+
+extern int buffer_flush(buffer *);
+extern int buffer_put(buffer *,const char *,size_t);
+extern int buffer_putalign(buffer *,const char *,size_t);
+extern int buffer_putflush(buffer *,const char *,size_t);
+extern int buffer_puts(buffer *,const char *);
+extern int buffer_putsalign(buffer *,const char *);
+extern int buffer_putsflush(buffer *,const char *);
+
+#define buffer_PUTC(s,c) \
+  ( ((s)->n != (s)->p) \
+    ? ( (s)->x[(s)->p++] = (c), 0 ) \
+    : buffer_put((s),&(c),1) \
+  )
+
+extern int buffer_get(buffer *,char *,size_t);
+extern int buffer_bget(buffer *,char *,size_t);
+extern int buffer_feed(buffer *);
+
+extern char *buffer_peek(buffer *);
+extern void buffer_seek(buffer *,size_t);
+
+#define buffer_PEEK(s) ( (s)->x + (s)->n )
+#define buffer_SEEK(s,len) ( ( (s)->p -= (len) ) , ( (s)->n += (len) ) )
+
+#define buffer_GETC(s,c) \
+  ( ((s)->p > 0) \
+    ? ( *(c) = (s)->x[(s)->n], buffer_SEEK((s),1), 1 ) \
+    : buffer_get((s),(c),1) \
+  )
+
+extern int buffer_copy(buffer *,buffer *);
+
+extern ssize_t buffer_unixread(int,char *,size_t);
+extern ssize_t buffer_unixwrite(int,char *,size_t);
+
+extern buffer *buffer_0;
+extern buffer *buffer_1;
+extern buffer *buffer_2;
+extern buffer *buffer_0small;
+extern buffer *buffer_1small;
+extern buffer *buffer_2small;
+
+#endif