Initial hopefully working code.

[mctap.git] / src / utils.h

#ifndef _UTILS_H
#define _UTILS_H

#include <sys/types.h>
#include <stdint.h>
#include <stdarg.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 bufdupc(buf) memcpy(smalloc((buf).d * sizeof(*((buf).b))), (buf).b, (buf).d * sizeof(*((buf).b)))
#define sizebuf(buf, wanted) (_sizebuf((struct buffer *)&(buf), (wanted), sizeof(*((buf).b))))
#define sizebuf2(buf, wanted) (_sizebuf2((void **)&(buf), &(buf ## size), (wanted), sizeof(*(buf))))
#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))); \
    (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 bufcatnum(buf, num, type) \
do { \
    type __buf__; \
    __buf__ = (num); \
    bufcat((buf), &__buf__, sizeof(type)); \
} while(0)
#define bufcatuid(buf, uid) \
do { \
    uniqid_t __buf__; \
    __buf__ = (uid); \
    bufcat((buf), &__buf__, sizeof(__buf__)); \
} while(0)
#define bufcatstr(buf, str) \
do { \
    char *__buf__; \
    __buf__ = (str); \
    bufcat((buf), __buf__, strlen(__buf__) + 1); \
} while(0)
#define bufcatstr2(buf, str) \
do { \
    char *__buf__; \
    __buf__ = (str); \
    bufcat((buf), __buf__, strlen(__buf__)); \
} while(0)
#define bufcats(buf, d) bufcat((buf), &(d), sizeof(d))
#define bufeat(buf, len) \
do { \
    size_t __bufeat_size__; \
    __bufeat_size__ = (len); \
    memmove((buf).b, (buf).b + __bufeat_size__, (buf).d -= __bufeat_size__); \
} while(0)

struct buffer {
    void *b;
    size_t s, d;
};

struct intbuf {
    int *b;
    size_t s, d;
};

struct charbuf {
    char *b;
    size_t s, d;
};

struct charvbuf {
    char **b;
    size_t s, d;
};

struct ptrbuf {
    void **b;
    size_t s, d;
};

void _sizebuf(struct buffer *buf, size_t wanted, size_t el);
void _sizebuf2(void **buf, size_t *sz, size_t wanted, size_t el);
char *vsprintf2(char *format, va_list al);
char *sprintf2(char *format, ...);

#endif