lib: Introduced a portable abstraction layer for custom stdio streams.

[ashd.git] / lib / utils.h

diff --git a/lib/utils.h b/lib/utils.h
index b74bfb5..4fdde3c 100644 (file)
--- a/lib/utils.h
+++ b/lib/utils.h
@@ -1,6 +1,7 @@
 #ifndef _UTILS_H
 #define _UTILS_H
 
+#include <stdio.h>
 #include <stdarg.h>
 #include <sys/types.h>
 
@@ -16,6 +17,7 @@
 #define bufinit(buf) memset(&(buf), 0, sizeof(buf))
 #define buffree(buf) do { if((buf).b != NULL) {free((buf).b);} bufinit(buf); } while(0)
 #define sizebuf(buf, wanted) (_sizebuf((struct buffer *)&(buf), (wanted), sizeof(*((buf).b))))
+#define bufdel(buf, i) (memmove((buf).b + (i), (buf).b + (i) + 1, (--((buf).d) - (i)) * sizeof(*((buf).b))))
 #define bufadd(buf, new) \
 do { \
     _sizebuf((struct buffer *)&(buf), (buf).d + 1, sizeof(*((buf).b))); \
@@ -60,6 +62,12 @@ struct charvbuf {
     size_t s, d;
 };
 
+struct btree {
+    struct btree *l, *r;
+    int h;
+    void *d;
+};
+
 void _sizebuf(struct buffer *buf, size_t wanted, size_t el);
 char *decstr(char **p, size_t *len);
 char *vsprintf2(char *format, va_list al);
@@ -74,5 +82,15 @@ void bprintf(struct charbuf *buf, char *format, ...);
 void replstr(char **p, char *n);
 char *base64encode(char *data, size_t datalen);
 char *base64decode(char *data, size_t *datalen);
+int hexdigit(char c);
+int bbtreedel(struct btree **tree, void *item, int (*cmp)(void *, void *));
+void freebtree(struct btree **tree, void (*ffunc)(void *));
+int bbtreeput(struct btree **tree, void *item, int (*cmp)(void *, void *));
+void *btreeget(struct btree *tree, void *key, int (*cmp)(void *, void *));
+FILE *funstdio(void *pdata,
+              ssize_t (*read)(void *pdata, void *buf, size_t len),
+              ssize_t (*write)(void *pdata, const void *buf, size_t len),
+              off_t (*seek)(void *pdata, off_t offset, int whence),
+              int (*close)(void *pdata));
 
 #endif