SDB_VISIBLE char *sdb_querys (Sdb *s, char *buf, size_t len, const char *cmd) {
const char *q;
char *p, *eq, *ask;
int i, ok, w, alength;
ut64 n;
if (!s) return NULL;
if (cmd == NULL) {
cmd = buf;
buf = NULL;
}
if (!len || !buf) buf = malloc ((len=32));
ask = strchr (cmd, '?');
if (*cmd == '+' || *cmd == '-') {
*buf = 0;
if (ask) {
*ask = 0;
if (*cmd=='+') n = sdb_json_inc (s, cmd+1, ask+1, 1, 0);
else n = sdb_json_dec (s, cmd+1, ask+1, 1, 0);
*ask = '?';
} else {
if (*cmd=='+') n = sdb_inc (s, cmd+1, 1, 0);
else n = sdb_dec (s, cmd+1, 1, 0);
}
w = snprintf (buf, len-1, "%"ULLFMT"d", n);
if (w<0 || (size_t)w>len) {
buf = malloc (0xff);
snprintf (buf, 0xff, "%"ULLFMT"d", n);
}
return buf;
} else if (*cmd == '(') {
p = strchr (cmd, ')');
if (!p) {
fprintf (stderr, "Missing ')'.\n");
return NULL;
}
*p = 0;
eq = strchr (p+1, '=');
if (cmd[1]=='?') {
// if (!eq) { ...
alength = sdb_alength (s, p+1);
w = snprintf (buf, len, "%d", alength);
if (w<0 || (size_t)w>len) {
buf = malloc (32);
snprintf (buf, 32, "%d", alength);
}
return buf;
}
if (cmd[1]) {
/* (+)foo=bla (-)foo=bla */
if ((cmd[1]=='+'||cmd[1]=='-') && !cmd[2]) {
if (eq) {
*eq = 0;
if (cmd[1]=='+') {
if (sdb_agetv (s, p+1, eq+1, 0)== -1)
sdb_aset (s, p+1, -1, eq+1, 0);
} else {
sdb_adels (s, p+1, eq+1, 0);
}
return NULL;
} else {
if (cmd[1]=='+') {
// (+)foo :: remove first element
sdb_adel (s, p+1, 0, 0);
} else {
// (-)foo :: remove last element
sdb_adel (s, p+1, -1, 0);
}
return NULL;
}
} else {
i = atoi (cmd+1);
if (eq) {
*eq = 0;
ok = eq[1]? (
(cmd[1]=='+')?
sdb_ains (s, p+1, i, eq+1, 0):
sdb_aset (s, p+1, i, eq+1, 0)
): sdb_adel (s, p+1, i, 0);
if (ok) *buf = 0; else buf = NULL;
return buf;
}
return sdb_aget (s, p+1, i, NULL);
}
} else {
if (eq) {
char *q, *out = strdup (eq+1);
*eq = 0;
// TODO: define new printable separator character
for (q=out; *q; q++) if (*q==',') *q = SDB_RS;
ok = sdb_set (s, p+1, out, 0);
free (out);
if (ok) {
*buf = 0;
return buf;
}
} else {
const char *out = sdb_getc (s, p+1, 0);
size_t wl;
if (!out) return NULL;
wl = strlen (out);
if (wl>len) buf = malloc (wl+2);
for (i=0; out[i]; i++) {
if (out[i+1])
buf[i] = out[i]==SDB_RS? '\n': out[i];
else buf[i] = out[i];
}
buf[i] = 0;
return buf;
}
}
} else {
eq = strchr (cmd, '=');
if (eq) {
// 1 0 kvpath=value
// 1 1 kvpath?jspath=value
if (ask>eq) ask = NULL;
*eq++ = 0;
if (ask) {
*ask++ = 0;
ok = sdb_json_set (s, cmd, ask, eq, 0);
} else ok = sdb_set (s, cmd, eq, 0);
if (!ok) return NULL;
*buf = 0;
return buf;
} else {
// 0 1 kvpath?jspath
// 0 0 kvpath
if (ask) {
*ask++ = 0;
// TODO: not optimized to reuse 'buf'
if ((p = sdb_json_get (s, cmd, ask, 0)))
return p;
} else {
// sdbget
if (!(q = sdb_getc (s, cmd, 0)))
return NULL;
if (strlen (q)> len) return strdup (q);
strcpy (buf, q);
return buf;
}
}
}
return NULL;
}
// XXX: cmd is reused
SDB_API char *sdb_querys (Sdb *s, char *buf, size_t len, const char *cmd) {
int i, d, ok, w, alength, bufset = 0;
const char *p, *q, *val = NULL;
char *eq, *ask;
ut64 n;
if (!s) return NULL;
if (cmd == NULL) {
cmd = buf;
buf = NULL;
}
if (!len || !buf) {
bufset = 1;
buf = malloc ((len=64));
}
ask = strchr (cmd, '?');
if (*cmd == '[') {
char *tp = strchr (cmd, ']');
if (!tp) {
fprintf (stderr, "Missing ']'.\n");
if (bufset)
free (buf);
return NULL;
}
*tp++ = 0;
p = (const char *)tp;
} else p = cmd;
eq = strchr (p, '=');
if (eq) {
*eq++ = 0;
if (*eq=='$')
val = sdb_getc (s, eq+1, 0);
}
if (!val) val = eq;
if (*cmd=='$')
cmd = sdb_getc (s, cmd+1, 0);
// cmd = val
// cmd is key and val is value
if (*cmd == '.') {
sdb_query_file (s, cmd+1);
if (bufset)
free (buf);
return NULL;
} else
if (*cmd == '+' || *cmd == '-') {
d = 1;
*buf = 0;
if (val) {
d = sdb_atoi (val);
if (d) {
if (*cmd=='+')
sdb_inc (s, cmd+1, d, 0);
else
sdb_dec (s, cmd+1, d, 0);
} else {
sdb_concat (s, cmd+1, val, 0);
}
} else {
if (ask) {
*ask = 0;
if (*cmd=='+') n = sdb_json_inc (s, cmd+1, ask+1, d, 0);
else n = sdb_json_dec (s, cmd+1, ask+1, d, 0);
*ask = '?';
} else {
if (*cmd=='+') n = sdb_inc (s, cmd+1, d, 0);
else n = sdb_dec (s, cmd+1, d, 0);
}
w = snprintf (buf, len-1, "%"ULLFMT"d", n);
if (w<0 || (size_t)w>len) {
buf = malloc (0xff);
snprintf (buf, 0xff, "%"ULLFMT"d", n);
}
}
return buf;
} else if (*cmd == '[') {
// [?] - count elements of array
if (cmd[1]=='?') {
// if (!eq) { ...
alength = sdb_alength (s, p);
w = snprintf (buf, len, "%d", alength);
if (w<0 || (size_t)w>len) {
buf = malloc (32);
snprintf (buf, 31, "%d", alength);
}
return buf;
}
if (cmd[1]=='+'||cmd[1]=='-') {
// [+]foo remove first element */
// [+]foo=bar PUSH */
// [-]foo POP */
// [-]foo=xx POP (=xx ignored) */
if (!cmd[2] || cmd[2] ==']') {
// insert
if (eq) {
if (cmd[1]=='+') {
if (sdb_agetv (s, p, val, 0)== -1)
sdb_aset (s, p, -1, val, 0);
} else {
sdb_adels (s, p, val, 0);
}
return NULL;
} else {
char *ret;
if (cmd[1]=='+') {
// XXX: this is a little strange syntax to remove an item
ret = sdb_aget (s, p, 0, 0);
// (+)foo :: remove first element
sdb_adel (s, p, 0, 0);
} else { // POP
ret = sdb_aget (s, p, -1, 0);
// (-)foo :: remove last element
sdb_adel (s, p, -1, 0);
}
return ret;
}
} else {
// get/set specific element in array
/* (+3)foo=bla */
i = atoi (cmd+1);
if (eq) {
ok = cmd[1]? (
(cmd[1]=='+')?
sdb_ains (s, p, i, val, 0):
sdb_aset (s, p, i, val, 0)
): sdb_adel (s, p, i, 0);
if (ok) *buf = 0; else buf = NULL;
return buf;
}
return sdb_aget (s, p, i, NULL);
}
} else {
if (eq) {
/* (3)foo=bla */
char *q, *out = strdup (val);
// TODO: define new printable separator character
for (q=out; *q; q++) if (*q==',') *q = SDB_RS;
if (cmd[1]) {
int idx = atoi (cmd+1);
ok = sdb_aset (s, p, idx, val, 0);
// TODO: handle when idx > sdb_alen
} else {
ok = sdb_set (s, p, out, 0);
}
free (out);
if (ok) {
*buf = 0;
return buf;
}
return NULL;
} else {
/* (3)foo */
const char *out = sdb_getc (s, p, 0);
size_t wl;
if (cmd[1]) {
i = atoi (cmd+1);
return sdb_aget (s, p, i, NULL);
}
if (!out) return NULL;
wl = strlen (out);
if (wl>len) buf = malloc (wl+2);
for (i=0; out[i]; i++) {
if (out[i+1])
buf[i] = out[i]==SDB_RS? '\n': out[i];
else buf[i] = out[i];
}
buf[i] = 0;
return buf;
}
}
} else {
if (eq) {
// 1 0 kvpath=value
// 1 1 kvpath?jspath=value
if (ask>eq) ask = NULL;
if (ask) {
*ask++ = 0;
ok = sdb_json_set (s, cmd, ask, val, 0);
} else ok = sdb_set (s, cmd, val, 0);
if (!ok) {
if (bufset)
free (buf);
return NULL;
}
*buf = 0;
return buf;
} else {
// 0 1 kvpath?jspath
// 0 0 kvpath
if (ask) {
*ask++ = 0;
// TODO: not optimized to reuse 'buf'
if ((p = sdb_json_get (s, cmd, ask, 0)))
return strdup (p);
} else {
// sdbget
if (!(q = sdb_getc (s, cmd, 0)))
return NULL;
if (strlen (q)> len) return strdup (q);
strcpy (buf, q);
return buf;
}
}
}
if (bufset)
free (buf);
return NULL;
}