Class: SDBM
Class Method Summary collapse
Instance Method Summary collapse
- #[] ⇒ Object
- #[]= ⇒ Object
- #clear ⇒ Object
- #close ⇒ Object
- #closed? ⇒ Boolean
- #delete ⇒ Object
- #delete_if ⇒ Object
- #each ⇒ Object
- #each_key ⇒ Object
- #each_pair ⇒ Object
- #each_value ⇒ Object
- #empty? ⇒ Boolean
- #fetch ⇒ Object
- #has_key? ⇒ Boolean
- #has_value? ⇒ Boolean
- #include? ⇒ Boolean
- #index ⇒ Object
- #initialize ⇒ Object constructor
- #invert ⇒ Object
- #key ⇒ Object
- #key? ⇒ Boolean
- #keys ⇒ Object
- #length ⇒ Object
- #member? ⇒ Boolean
- #reject ⇒ Object
- #reject! ⇒ Object
- #replace ⇒ Object
- #select ⇒ Object
- #shift ⇒ Object
- #size ⇒ Object
- #store ⇒ Object
- #to_a ⇒ Object
- #to_hash ⇒ Object
- #update ⇒ Object
- #value? ⇒ Boolean
- #values ⇒ Object
- #values_at ⇒ Object
Constructor Details
#initialize ⇒ Object
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# File 'init.c', line 82
static VALUE
fsdbm_initialize(int argc, VALUE *argv, VALUE obj)
{
volatile VALUE file;
VALUE vmode;
DBM *dbm;
struct dbmdata *dbmp;
int mode;
if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
mode = 0666; /* default value */
}
else if (NIL_P(vmode)) {
mode = -1; /* return nil if DB not exist */
}
else {
mode = NUM2INT(vmode);
}
FilePathValue(file);
dbm = 0;
if (mode >= 0)
dbm = sdbm_open(RSTRING_PTR(file), O_RDWR|O_CREAT, mode);
if (!dbm)
dbm = sdbm_open(RSTRING_PTR(file), O_RDWR, 0);
if (!dbm)
dbm = sdbm_open(RSTRING_PTR(file), O_RDONLY, 0);
if (!dbm) {
if (mode == -1) return Qnil;
rb_sys_fail(RSTRING_PTR(file));
}
dbmp = ALLOC(struct dbmdata);
DATA_PTR(obj) = dbmp;
dbmp->di_dbm = dbm;
dbmp->di_size = -1;
return obj;
}
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Class Method Details
.open ⇒ Object
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# File 'init.c', line 123
static VALUE
fsdbm_s_open(int argc, VALUE *argv, VALUE klass)
{
VALUE obj = Data_Wrap_Struct(klass, 0, free_sdbm, 0);
if (NIL_P(fsdbm_initialize(argc, argv, obj))) {
return Qnil;
}
if (rb_block_given_p()) {
return rb_ensure(rb_yield, obj, fsdbm_close, obj);
}
return obj;
}
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Instance Method Details
#[] ⇒ Object
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# File 'init.c', line 160
static VALUE
fsdbm_aref(VALUE obj, VALUE keystr)
{
return fsdbm_fetch(obj, keystr, Qnil);
}
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#[]= ⇒ Object
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# File 'init.c', line 387
static VALUE
fsdbm_store(VALUE obj, VALUE keystr, VALUE valstr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
if (valstr == Qnil) {
fsdbm_delete(obj, keystr);
return Qnil;
}
fdbm_modify(obj);
ExportStringValue(keystr);
ExportStringValue(valstr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
val.dptr = RSTRING_PTR(valstr);
val.dsize = RSTRING_LENINT(valstr);
GetDBM2(obj, dbmp, dbm);
dbmp->di_size = -1;
if (sdbm_store(dbm, key, val, DBM_REPLACE)) {
#ifdef HAVE_DBM_CLAERERR
sdbm_clearerr(dbm);
#endif
if (errno == EPERM) rb_sys_fail(0);
rb_raise(rb_eDBMError, "sdbm_store failed");
}
return valstr;
}
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#clear ⇒ Object
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# File 'init.c', line 348
static VALUE
fsdbm_clear(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
fdbm_modify(obj);
GetDBM2(obj, dbmp, dbm);
dbmp->di_size = -1;
while (key = sdbm_firstkey(dbm), key.dptr) {
if (sdbm_delete(dbm, key)) {
rb_raise(rb_eDBMError, "sdbm_delete failed");
}
}
dbmp->di_size = 0;
return obj;
}
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#close ⇒ Object
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# File 'init.c', line 50
static VALUE
fsdbm_close(VALUE obj)
{
struct dbmdata *dbmp;
GetDBM(obj, dbmp);
sdbm_close(dbmp->di_dbm);
dbmp->di_dbm = 0;
return Qnil;
}
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#closed? ⇒ Boolean
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# File 'init.c', line 62
static VALUE
fsdbm_closed(VALUE obj)
{
struct dbmdata *dbmp;
Data_Get_Struct(obj, struct dbmdata, dbmp);
if (dbmp == 0)
return Qtrue;
if (dbmp->di_dbm == 0)
return Qtrue;
return Qfalse;
}
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#delete ⇒ Object
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# File 'init.c', line 251
static VALUE
fsdbm_delete(VALUE obj, VALUE keystr)
{
datum key, value;
struct dbmdata *dbmp;
DBM *dbm;
VALUE valstr;
fdbm_modify(obj);
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
GetDBM2(obj, dbmp, dbm);
dbmp->di_size = -1;
value = sdbm_fetch(dbm, key);
if (value.dptr == 0) {
if (rb_block_given_p()) return rb_yield(keystr);
return Qnil;
}
/* need to save value before sdbm_delete() */
valstr = rb_external_str_new(value.dptr, value.dsize);
if (sdbm_delete(dbm, key)) {
dbmp->di_size = -1;
rb_raise(rb_eDBMError, "dbm_delete failed");
}
else if (dbmp->di_size >= 0) {
dbmp->di_size--;
}
return valstr;
}
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#delete_if ⇒ Object
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# File 'init.c', line 309
static VALUE
fsdbm_delete_if(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE keystr, valstr;
VALUE ret, ary = rb_ary_new();
int i, status = 0, n;
fdbm_modify(obj);
GetDBM2(obj, dbmp, dbm);
n = dbmp->di_size;
dbmp->di_size = -1;
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
keystr = rb_external_str_new(key.dptr, key.dsize);
valstr = rb_external_str_new(val.dptr, val.dsize);
ret = rb_protect(rb_yield, rb_assoc_new(rb_str_dup(keystr), valstr), &status);
if (status != 0) break;
if (RTEST(ret)) rb_ary_push(ary, keystr);
GetDBM2(obj, dbmp, dbm);
}
for (i = 0; i < RARRAY_LEN(ary); i++) {
keystr = RARRAY_PTR(ary)[i];
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
if (sdbm_delete(dbm, key)) {
rb_raise(rb_eDBMError, "sdbm_delete failed");
}
}
if (status) rb_jump_tag(status);
if (n > 0) dbmp->di_size = n - RARRAY_LENINT(ary);
return obj;
}
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#each ⇒ Object
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# File 'init.c', line 525
static VALUE
fsdbm_each_pair(VALUE obj)
{
datum key, val;
DBM *dbm;
struct dbmdata *dbmp;
VALUE keystr, valstr;
RETURN_ENUMERATOR(obj, 0, 0);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
keystr = rb_external_str_new(key.dptr, key.dsize);
valstr = rb_external_str_new(val.dptr, val.dsize);
rb_yield(rb_assoc_new(keystr, valstr));
GetDBM2(obj, dbmp, dbm);
}
return obj;
}
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#each_key ⇒ Object
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# File 'init.c', line 508
static VALUE
fsdbm_each_key(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
RETURN_ENUMERATOR(obj, 0, 0);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
rb_yield(rb_external_str_new(key.dptr, key.dsize));
GetDBM2(obj, dbmp, dbm);
}
return obj;
}
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#each_pair ⇒ Object
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# File 'init.c', line 525
static VALUE
fsdbm_each_pair(VALUE obj)
{
datum key, val;
DBM *dbm;
struct dbmdata *dbmp;
VALUE keystr, valstr;
RETURN_ENUMERATOR(obj, 0, 0);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
keystr = rb_external_str_new(key.dptr, key.dsize);
valstr = rb_external_str_new(val.dptr, val.dsize);
rb_yield(rb_assoc_new(keystr, valstr));
GetDBM2(obj, dbmp, dbm);
}
return obj;
}
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#each_value ⇒ Object
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# File 'init.c', line 490
static VALUE
fsdbm_each_value(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
RETURN_ENUMERATOR(obj, 0, 0);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
rb_yield(rb_external_str_new(val.dptr, val.dsize));
GetDBM2(obj, dbmp, dbm);
}
return obj;
}
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#empty? ⇒ Boolean
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# File 'init.c', line 467
static VALUE
fsdbm_empty_p(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
int i = 0;
GetDBM(obj, dbmp);
if (dbmp->di_size < 0) {
dbm = dbmp->di_dbm;
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
i++;
}
}
else {
i = dbmp->di_size;
}
if (i == 0) return Qtrue;
return Qfalse;
}
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#fetch ⇒ Object
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# File 'init.c', line 166
static VALUE
fsdbm_fetch_m(int argc, VALUE *argv, VALUE obj)
{
VALUE keystr, valstr, ifnone;
rb_scan_args(argc, argv, "11", &keystr, &ifnone);
valstr = fsdbm_fetch(obj, keystr, ifnone);
if (argc == 1 && !rb_block_given_p() && NIL_P(valstr))
rb_raise(rb_eIndexError, "key not found");
return valstr;
}
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#has_key? ⇒ Boolean
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# File 'init.c', line 582
static VALUE
fsdbm_has_key(VALUE obj, VALUE keystr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
GetDBM2(obj, dbmp, dbm);
val = sdbm_fetch(dbm, key);
if (val.dptr) return Qtrue;
return Qfalse;
}
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#has_value? ⇒ Boolean
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# File 'init.c', line 599
static VALUE
fsdbm_has_value(VALUE obj, VALUE valstr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(valstr);
val.dptr = RSTRING_PTR(valstr);
val.dsize = RSTRING_LENINT(valstr);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
if (val.dsize == RSTRING_LENINT(valstr) &&
memcmp(val.dptr, RSTRING_PTR(valstr), val.dsize) == 0)
return Qtrue;
}
return Qfalse;
}
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#include? ⇒ Boolean
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# File 'init.c', line 582
static VALUE
fsdbm_has_key(VALUE obj, VALUE keystr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
GetDBM2(obj, dbmp, dbm);
val = sdbm_fetch(dbm, key);
if (val.dptr) return Qtrue;
return Qfalse;
}
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#index ⇒ Object
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# File 'init.c', line 200
static VALUE
fsdbm_index(VALUE hash, VALUE value)
{
rb_warn("SDBM#index is deprecated; use SDBM#key");
return fsdbm_key(hash, value);
}
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#invert ⇒ Object
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# File 'init.c', line 368
static VALUE
fsdbm_invert(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE keystr, valstr;
VALUE hash = rb_hash_new();
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
keystr = rb_external_str_new(key.dptr, key.dsize);
valstr = rb_external_str_new(val.dptr, val.dsize);
rb_hash_aset(hash, valstr, keystr);
}
return hash;
}
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#key ⇒ Object
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# File 'init.c', line 179
static VALUE
fsdbm_key(VALUE obj, VALUE valstr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(valstr);
val.dptr = RSTRING_PTR(valstr);
val.dsize = RSTRING_LENINT(valstr);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
if (val.dsize == RSTRING_LEN(valstr) &&
memcmp(val.dptr, RSTRING_PTR(valstr), val.dsize) == 0)
return rb_external_str_new(key.dptr, key.dsize);
}
return Qnil;
}
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#key? ⇒ Boolean
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# File 'init.c', line 582
static VALUE
fsdbm_has_key(VALUE obj, VALUE keystr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
GetDBM2(obj, dbmp, dbm);
val = sdbm_fetch(dbm, key);
if (val.dptr) return Qtrue;
return Qfalse;
}
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#keys ⇒ Object
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# File 'init.c', line 547
static VALUE
fsdbm_keys(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
VALUE ary;
GetDBM2(obj, dbmp, dbm);
ary = rb_ary_new();
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
rb_ary_push(ary, rb_external_str_new(key.dptr, key.dsize));
}
return ary;
}
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#length ⇒ Object
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# File 'init.c', line 448
static VALUE
fsdbm_length(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
int i = 0;
GetDBM2(obj, dbmp, dbm);
if (dbmp->di_size > 0) return INT2FIX(dbmp->di_size);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
i++;
}
dbmp->di_size = i;
return INT2FIX(i);
}
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#member? ⇒ Boolean
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# File 'init.c', line 582
static VALUE
fsdbm_has_key(VALUE obj, VALUE keystr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
GetDBM2(obj, dbmp, dbm);
val = sdbm_fetch(dbm, key);
if (val.dptr) return Qtrue;
return Qfalse;
}
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#reject ⇒ Object
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# File 'init.c', line 658
static VALUE
fsdbm_reject(VALUE obj)
{
return rb_hash_delete_if(fsdbm_to_hash(obj));
}
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#reject! ⇒ Object
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# File 'init.c', line 309
static VALUE
fsdbm_delete_if(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE keystr, valstr;
VALUE ret, ary = rb_ary_new();
int i, status = 0, n;
fdbm_modify(obj);
GetDBM2(obj, dbmp, dbm);
n = dbmp->di_size;
dbmp->di_size = -1;
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
keystr = rb_external_str_new(key.dptr, key.dsize);
valstr = rb_external_str_new(val.dptr, val.dsize);
ret = rb_protect(rb_yield, rb_assoc_new(rb_str_dup(keystr), valstr), &status);
if (status != 0) break;
if (RTEST(ret)) rb_ary_push(ary, keystr);
GetDBM2(obj, dbmp, dbm);
}
for (i = 0; i < RARRAY_LEN(ary); i++) {
keystr = RARRAY_PTR(ary)[i];
ExportStringValue(keystr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
if (sdbm_delete(dbm, key)) {
rb_raise(rb_eDBMError, "sdbm_delete failed");
}
}
if (status) rb_jump_tag(status);
if (n > 0) dbmp->di_size = n - RARRAY_LENINT(ary);
return obj;
}
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#replace ⇒ Object
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# File 'init.c', line 440
static VALUE
fsdbm_replace(VALUE obj, VALUE other)
{
fsdbm_clear(obj);
rb_block_call(other, rb_intern("each_pair"), 0, 0, update_i, obj);
return obj;
}
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#select ⇒ Object
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# File 'init.c', line 207
static VALUE
fsdbm_select(VALUE obj)
{
VALUE new = rb_ary_new();
datum key, val;
DBM *dbm;
struct dbmdata *dbmp;
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
VALUE assoc, v;
val = sdbm_fetch(dbm, key);
assoc = rb_assoc_new(rb_external_str_new(key.dptr, key.dsize),
rb_external_str_new(val.dptr, val.dsize));
v = rb_yield(assoc);
if (RTEST(v)) {
rb_ary_push(new, assoc);
}
GetDBM2(obj, dbmp, dbm);
}
return new;
}
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#shift ⇒ Object
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# File 'init.c', line 286
static VALUE
fsdbm_shift(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE keystr, valstr;
fdbm_modify(obj);
GetDBM2(obj, dbmp, dbm);
key = sdbm_firstkey(dbm);
if (!key.dptr) return Qnil;
val = sdbm_fetch(dbm, key);
keystr = rb_external_str_new(key.dptr, key.dsize);
valstr = rb_external_str_new(val.dptr, val.dsize);
sdbm_delete(dbm, key);
if (dbmp->di_size >= 0) {
dbmp->di_size--;
}
return rb_assoc_new(keystr, valstr);
}
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#size ⇒ Object
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# File 'init.c', line 448
static VALUE
fsdbm_length(VALUE obj)
{
datum key;
struct dbmdata *dbmp;
DBM *dbm;
int i = 0;
GetDBM2(obj, dbmp, dbm);
if (dbmp->di_size > 0) return INT2FIX(dbmp->di_size);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
i++;
}
dbmp->di_size = i;
return INT2FIX(i);
}
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#store ⇒ Object
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# File 'init.c', line 387
static VALUE
fsdbm_store(VALUE obj, VALUE keystr, VALUE valstr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
if (valstr == Qnil) {
fsdbm_delete(obj, keystr);
return Qnil;
}
fdbm_modify(obj);
ExportStringValue(keystr);
ExportStringValue(valstr);
key.dptr = RSTRING_PTR(keystr);
key.dsize = RSTRING_LENINT(keystr);
val.dptr = RSTRING_PTR(valstr);
val.dsize = RSTRING_LENINT(valstr);
GetDBM2(obj, dbmp, dbm);
dbmp->di_size = -1;
if (sdbm_store(dbm, key, val, DBM_REPLACE)) {
#ifdef HAVE_DBM_CLAERERR
sdbm_clearerr(dbm);
#endif
if (errno == EPERM) rb_sys_fail(0);
rb_raise(rb_eDBMError, "sdbm_store failed");
}
return valstr;
}
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#to_a ⇒ Object
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# File 'init.c', line 620
static VALUE
fsdbm_to_a(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE ary;
GetDBM2(obj, dbmp, dbm);
ary = rb_ary_new();
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
rb_ary_push(ary, rb_assoc_new(rb_external_str_new(key.dptr, key.dsize),
rb_external_str_new(val.dptr, val.dsize)));
}
return ary;
}
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#to_hash ⇒ Object
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# File 'init.c', line 639
static VALUE
fsdbm_to_hash(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE hash;
GetDBM2(obj, dbmp, dbm);
hash = rb_hash_new();
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
rb_hash_aset(hash, rb_external_str_new(key.dptr, key.dsize),
rb_external_str_new(val.dptr, val.dsize));
}
return hash;
}
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#update ⇒ Object
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# File 'init.c', line 433
static VALUE
fsdbm_update(VALUE obj, VALUE other)
{
rb_block_call(other, rb_intern("each_pair"), 0, 0, update_i, obj);
return obj;
}
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#value? ⇒ Boolean
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# File 'init.c', line 599
static VALUE
fsdbm_has_value(VALUE obj, VALUE valstr)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
ExportStringValue(valstr);
val.dptr = RSTRING_PTR(valstr);
val.dsize = RSTRING_LENINT(valstr);
GetDBM2(obj, dbmp, dbm);
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
if (val.dsize == RSTRING_LENINT(valstr) &&
memcmp(val.dptr, RSTRING_PTR(valstr), val.dsize) == 0)
return Qtrue;
}
return Qfalse;
}
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#values ⇒ Object
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# File 'init.c', line 564
static VALUE
fsdbm_values(VALUE obj)
{
datum key, val;
struct dbmdata *dbmp;
DBM *dbm;
VALUE ary;
GetDBM2(obj, dbmp, dbm);
ary = rb_ary_new();
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
val = sdbm_fetch(dbm, key);
rb_ary_push(ary, rb_external_str_new(val.dptr, val.dsize));
}
return ary;
}
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#values_at ⇒ Object
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# File 'init.c', line 231
static VALUE
fsdbm_values_at(int argc, VALUE *argv, VALUE obj)
{
VALUE new = rb_ary_new2(argc);
int i;
for (i=0; i<argc; i++) {
rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil));
}
return new;
}
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