Initial skeleton.

[ashd.git] / lib / utils.h

diff --git a/lib/utils.h b/lib/utils.h
new file mode 100644 (file)
index 0000000..d74d09d
--- /dev/null
+++ b/lib/utils.h
@@ -0,0 +1,52 @@
+#ifndef _UTILS_H
+#define _UTILS_H
+
+#define smalloc(size) ({void *__result__; ((__result__ = malloc(size)) == NULL)?({exit(-1); (void *)0;}):__result__;})
+#define srealloc(ptr, size) ({void *__result__; ((__result__ = realloc((ptr), (size))) == NULL)?({exit(-1); (void *)0;}):__result__;})
+#define szmalloc(size) memset(smalloc(size), 0, size)
+#define sstrdup(str) ({char *__strbuf__ = (str); strcpy(smalloc(strlen(__strbuf__) + 1), __strbuf__);})
+#define omalloc(o) ((o) = szmalloc(sizeof(*(o))))
+
+#define bufinit(buf) memset(&(buf), 0, sizeof(buf))
+#define buffree(buf) do { if((buf).b != NULL) {free((buf).b);} } while(0)
+#define sizebuf(buf, wanted) (_sizebuf((struct buffer *)&(buf), (wanted), sizeof(*((buf).b))))
+#define bufadd(buf, new) \
+do { \
+    _sizebuf((struct buffer *)&(buf), (buf).d + 1, sizeof(*((buf).b))); \
+    (buf).b[(buf).d++] = (new); \
+} while(0)
+#define bufcat(buf, new, size) \
+do { \
+    size_t __bufcat_size__; \
+    __bufcat_size__ = (size); \
+    _sizebuf((struct buffer *)&(buf), (buf).d + __bufcat_size__, sizeof((buf).b)); \
+    memcpy((buf).b + (buf).d, (new), (__bufcat_size__) * sizeof(*((buf).b))); \
+    (buf).d += __bufcat_size__; \
+} while(0)
+#define bufcatstr2(buf, str) \
+do { \
+    char *__buf__; \
+    __buf__ = (str); \
+    bufcat((buf), __buf__, strlen(__buf__)); \
+} while(0)
+
+struct buffer {
+    void *b;
+    size_t s, d;
+};
+
+#define typedbuf(type) struct {type *b; size_t s, d;}
+
+struct charbuf {
+    char *b;
+    size_t s, d;
+};
+
+struct charvbuf {
+    char **b;
+    size_t s, d;
+};
+
+void _sizebuf(struct buffer *buf, size_t wanted, size_t el);
+
+#endif