num.c

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// SPDX-FileCopyrightText: 2011-2016 pancake <pancake@nopcode.org>
// SPDX-License-Identifier: MIT
 
#include "sdb.h"
#include <rz_types.h>
 
// check if key exists and if it's a number.. rename?
RZ_API bool sdb_num_exists(Sdb *s, const char *key) {
    const char *o = sdb_const_get(s, key, NULL);
    return o ? (*o >= '0' && *o <= '9') : false;
}
 
RZ_API ut64 sdb_num_get(Sdb *s, const char *key, ut32 *cas) {
    const char *v = sdb_const_get(s, key, cas);
    return (!v || *v == '-') ? 0LL : sdb_atoi(v);
}
 
RZ_API int sdb_num_add(Sdb *s, const char *key, ut64 v, ut32 cas) {
    char *val, b[SDB_NUM_BUFSZ];
    int numbase = sdb_num_base(sdb_const_get(s, key, NULL));
    val = sdb_itoa(v, b, numbase);
    return sdb_add(s, key, val, cas);
}
 
RZ_API int sdb_num_set(Sdb *s, const char *key, ut64 v, ut32 cas) {
    char *val, b[SDB_NUM_BUFSZ];
    int numbase = sdb_num_base(sdb_const_get(s, key, NULL));
    val = sdb_itoa(v, b, numbase);
    return sdb_set(s, key, val, cas);
}
 
RZ_API ut64 sdb_num_inc(Sdb *s, const char *key, ut64 n2, ut32 cas) {
    ut32 c;
    ut64 n = sdb_num_get(s, key, &c);
    ut64 res = n + n2;
    if ((cas && c != cas) || res < n) {
        return 0LL;
    }
    sdb_num_set(s, key, res, cas);
    return res;
}
 
RZ_API ut64 sdb_num_dec(Sdb *s, const char *key, ut64 n2, ut32 cas) {
    ut32 c;
    ut64 n = sdb_num_get(s, key, &c);
    if (cas && c != cas) {
        return 0LL;
    }
    if (n2 > n) {
        sdb_set(s, key, "0", cas);
        return 0LL; // XXX must be -1LL?
    }
    n -= n2;
    sdb_num_set(s, key, n, cas);
    return n;
}
 
RZ_API int sdb_num_min(Sdb *db, const char *k, ut64 n, ut32 cas) {
    const char *a = sdb_const_get(db, k, NULL);
    return (!a || n < sdb_atoi(a))
        ? sdb_num_set(db, k, n, cas)
        : 0;
}
 
RZ_API int sdb_num_max(Sdb *db, const char *k, ut64 n, ut32 cas) {
    const char *a = sdb_const_get(db, k, NULL);
    return (!a || n > sdb_atoi(a))
        ? sdb_num_set(db, k, n, cas)
        : 0;
}
 
RZ_API int sdb_bool_set(Sdb *db, const char *str, bool v, ut32 cas) {
    return sdb_set(db, str, v ? "true" : "false", cas);
}
 
RZ_API bool sdb_bool_get(Sdb *db, const char *str, ut32 *cas) {
    const char *b = sdb_const_get(db, str, cas);
    return b && (!strcmp(b, "1") || !strcmp(b, "true"));
}
 
/* pointers */
 
RZ_API int sdb_ptr_set(Sdb *db, const char *key, void *p, ut32 cas) {
    return sdb_num_set(db, key, (ut64)(size_t)p, cas);
}
 
RZ_API void *sdb_ptr_get(Sdb *db, const char *key, ut32 *cas) {
    return (void *)(size_t)sdb_num_get(db, key, cas);
}