зеркало из https://github.com/github/ruby.git
779 строки
17 KiB
C
779 строки
17 KiB
C
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sdbminit.c -
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$Author$
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$Date$
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created at: Fri May 7 08:34:24 JST 1999
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Copyright (C) 1995-2001 Yukihiro Matsumoto
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************************************************/
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#include "ruby.h"
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#include "sdbm.h"
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#include <fcntl.h>
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#include <errno.h>
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static VALUE rb_cDBM, rb_eDBMError;
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struct dbmdata {
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int di_size;
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DBM *di_dbm;
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};
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static void
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closed_sdbm()
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{
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rb_raise(rb_eDBMError, "closed SDBM file");
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}
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#define GetDBM(obj, dbmp) {\
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Data_Get_Struct(obj, struct dbmdata, dbmp);\
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if (dbmp->di_dbm == 0) closed_sdbm();\
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}
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static void
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free_sdbm(dbmp)
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struct dbmdata *dbmp;
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{
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if (dbmp->di_dbm) sdbm_close(dbmp->di_dbm);
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free(dbmp);
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}
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static VALUE
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fsdbm_close(obj)
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VALUE obj;
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{
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struct dbmdata *dbmp;
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GetDBM(obj, dbmp);
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sdbm_close(dbmp->di_dbm);
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dbmp->di_dbm = 0;
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return Qnil;
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}
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static VALUE fsdbm_alloc _((VALUE));
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static VALUE
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fsdbm_alloc(klass)
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VALUE klass;
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{
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return Data_Wrap_Struct(klass, 0, free_sdbm, 0);
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}
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static VALUE
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fsdbm_initialize(argc, argv, obj)
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int argc;
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VALUE *argv;
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VALUE obj;
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{
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VALUE file, vmode;
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DBM *dbm;
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struct dbmdata *dbmp;
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int mode;
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if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
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mode = 0666; /* default value */
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}
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else if (NIL_P(vmode)) {
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mode = -1; /* return nil if DB not exist */
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}
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else {
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mode = NUM2INT(vmode);
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}
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SafeStringValue(file);
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dbm = 0;
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if (mode >= 0)
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dbm = sdbm_open(RSTRING(file)->ptr, O_RDWR|O_CREAT, mode);
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if (!dbm)
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dbm = sdbm_open(RSTRING(file)->ptr, O_RDWR, 0);
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if (!dbm)
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dbm = sdbm_open(RSTRING(file)->ptr, O_RDONLY, 0);
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if (!dbm) {
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if (mode == -1) return Qnil;
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rb_sys_fail(RSTRING(file)->ptr);
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}
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dbmp = ALLOC(struct dbmdata);
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DATA_PTR(obj) = dbmp;
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dbmp->di_dbm = dbm;
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dbmp->di_size = -1;
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return obj;
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}
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static VALUE
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fsdbm_s_open(argc, argv, klass)
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int argc;
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VALUE *argv;
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VALUE klass;
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{
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VALUE obj = Data_Wrap_Struct(klass, 0, free_sdbm, 0);
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if (NIL_P(fsdbm_initialize(argc, argv, obj))) {
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return Qnil;
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}
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if (rb_block_given_p()) {
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return rb_ensure(rb_yield, obj, fsdbm_close, obj);
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}
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return obj;
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}
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static VALUE
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fsdbm_fetch(obj, keystr, ifnone)
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VALUE obj, keystr, ifnone;
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{
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datum key, value;
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struct dbmdata *dbmp;
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DBM *dbm;
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StringValue(keystr);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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value = sdbm_fetch(dbm, key);
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if (value.dptr == 0) {
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if (ifnone == Qnil && rb_block_given_p())
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return rb_yield(rb_tainted_str_new(key.dptr, key.dsize));
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return ifnone;
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}
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return rb_tainted_str_new(value.dptr, value.dsize);
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}
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static VALUE
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fsdbm_aref(obj, keystr)
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VALUE obj, keystr;
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{
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return fsdbm_fetch(obj, keystr, Qnil);
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}
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static VALUE
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fsdbm_fetch_m(argc, argv, obj)
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int argc;
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VALUE *argv;
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VALUE obj;
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{
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VALUE keystr, valstr, ifnone;
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rb_scan_args(argc, argv, "11", &keystr, &ifnone);
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valstr = fsdbm_fetch(obj, keystr, ifnone);
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if (argc == 1 && !rb_block_given_p() && NIL_P(valstr))
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rb_raise(rb_eIndexError, "key not found");
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return valstr;
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}
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static VALUE
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fsdbm_index(obj, valstr)
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VALUE obj, valstr;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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StringValue(valstr);
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val.dptr = RSTRING(valstr)->ptr;
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val.dsize = RSTRING(valstr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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if (val.dsize == RSTRING(valstr)->len &&
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memcmp(val.dptr, RSTRING(valstr)->ptr, val.dsize) == 0)
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return rb_tainted_str_new(key.dptr, key.dsize);
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}
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return Qnil;
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}
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static VALUE
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fsdbm_indexes(argc, argv, obj)
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int argc;
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VALUE *argv;
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VALUE obj;
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{
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VALUE new;
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int i;
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new = rb_ary_new2(argc);
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for (i=0; i<argc; i++) {
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rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil));
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}
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return new;
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}
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static VALUE
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fsdbm_select(argc, argv, obj)
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int argc;
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VALUE *argv;
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VALUE obj;
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{
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VALUE new = rb_ary_new2(argc);
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int i;
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if (rb_block_given_p()) {
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datum key, val;
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DBM *dbm;
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struct dbmdata *dbmp;
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if (argc > 0) {
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rb_raise(rb_eArgError, "wrong number arguments(%d for 0)", argc);
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}
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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VALUE assoc;
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val = sdbm_fetch(dbm, key);
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assoc = rb_assoc_new(rb_tainted_str_new(key.dptr, key.dsize),
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rb_tainted_str_new(val.dptr, val.dsize));
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if (RTEST(rb_yield(assoc)))
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rb_ary_push(new, assoc);
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}
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}
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else {
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rb_warn("SDBM#select(index..) is deprecated; use SDBM#values_at");
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for (i=0; i<argc; i++) {
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rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil));
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}
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}
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return new;
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}
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static VALUE
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fsdbm_values_at(argc, argv, obj)
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int argc;
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VALUE *argv;
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VALUE obj;
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{
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VALUE new = rb_ary_new2(argc);
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int i;
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for (i=0; i<argc; i++) {
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rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil));
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}
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return new;
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}
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static VALUE
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fsdbm_delete(obj, keystr)
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VALUE obj, keystr;
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{
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datum key, value;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE valstr;
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rb_secure(4);
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StringValue(keystr);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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dbmp->di_size = -1;
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value = sdbm_fetch(dbm, key);
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if (value.dptr == 0) {
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if (rb_block_given_p()) return rb_yield(keystr);
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return Qnil;
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}
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/* need to save value before sdbm_delete() */
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valstr = rb_tainted_str_new(value.dptr, value.dsize);
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if (sdbm_delete(dbm, key)) {
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dbmp->di_size = -1;
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rb_raise(rb_eDBMError, "dbm_delete failed");
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}
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else if (dbmp->di_size >= 0) {
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dbmp->di_size--;
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}
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return valstr;
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}
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static VALUE
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fsdbm_shift(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE keystr, valstr;
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rb_secure(4);
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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key = sdbm_firstkey(dbm);
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if (!key.dptr) return Qnil;
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val = sdbm_fetch(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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sdbm_delete(dbm, key);
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if (dbmp->di_size >= 0) {
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dbmp->di_size--;
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}
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return rb_assoc_new(keystr, valstr);
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}
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static VALUE
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fsdbm_delete_if(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE keystr, valstr;
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VALUE ret, ary = rb_ary_new();
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int i, status = 0, n;
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rb_secure(4);
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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n = dbmp->di_size;
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dbmp->di_size = -1;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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ret = rb_protect(rb_yield, rb_assoc_new(rb_str_dup(keystr), valstr), &status);
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if (status != 0) break;
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if (RTEST(ret)) rb_ary_push(ary, keystr);
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}
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for (i = 0; i < RARRAY(ary)->len; i++) {
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keystr = RARRAY(ary)->ptr[i];
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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if (sdbm_delete(dbm, key)) {
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rb_raise(rb_eDBMError, "sdbm_delete failed");
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}
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}
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if (status) rb_jump_tag(status);
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if (n > 0) dbmp->di_size = n - RARRAY(ary)->len;
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return obj;
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}
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static VALUE
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fsdbm_clear(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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rb_secure(4);
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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dbmp->di_size = -1;
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while (key = sdbm_firstkey(dbm), key.dptr) {
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if (sdbm_delete(dbm, key)) {
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rb_raise(rb_eDBMError, "sdbm_delete failed");
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}
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}
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dbmp->di_size = 0;
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return obj;
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}
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static VALUE
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fsdbm_invert(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE keystr, valstr;
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VALUE hash = rb_hash_new();
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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rb_hash_aset(hash, valstr, keystr);
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}
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return hash;
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}
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static VALUE each_pair _((VALUE));
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static VALUE
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each_pair(obj)
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VALUE obj;
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{
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return rb_funcall(obj, rb_intern("each_pair"), 0, 0);
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}
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static VALUE fsdbm_store _((VALUE,VALUE,VALUE));
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static VALUE
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update_i(pair, dbm)
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VALUE pair, dbm;
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{
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Check_Type(pair, T_ARRAY);
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if (RARRAY(pair)->len < 2) {
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rb_raise(rb_eArgError, "pair must be [key, value]");
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}
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fsdbm_store(dbm, RARRAY(pair)->ptr[0], RARRAY(pair)->ptr[1]);
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return Qnil;
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}
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static VALUE
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fsdbm_update(obj, other)
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VALUE obj, other;
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{
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rb_iterate(each_pair, other, update_i, obj);
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return obj;
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}
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static VALUE
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fsdbm_replace(obj, other)
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VALUE obj, other;
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{
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fsdbm_clear(obj);
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rb_iterate(each_pair, other, update_i, obj);
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return obj;
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}
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static VALUE
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fsdbm_store(obj, keystr, valstr)
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VALUE obj, keystr, valstr;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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if (valstr == Qnil) {
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fsdbm_delete(obj, keystr);
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return Qnil;
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}
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rb_secure(4);
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keystr = rb_obj_as_string(keystr);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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if (NIL_P(valstr)) return fsdbm_delete(obj, keystr);
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valstr = rb_obj_as_string(valstr);
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val.dptr = RSTRING(valstr)->ptr;
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val.dsize = RSTRING(valstr)->len;
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GetDBM(obj, dbmp);
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dbmp->di_size = -1;
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dbm = dbmp->di_dbm;
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if (sdbm_store(dbm, key, val, DBM_REPLACE)) {
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#ifdef HAVE_DBM_CLAERERR
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sdbm_clearerr(dbm);
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#endif
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if (errno == EPERM) rb_sys_fail(0);
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rb_raise(rb_eDBMError, "sdbm_store failed");
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}
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return valstr;
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}
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static VALUE
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fsdbm_length(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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int i = 0;
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GetDBM(obj, dbmp);
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if (dbmp->di_size > 0) return INT2FIX(dbmp->di_size);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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i++;
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}
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dbmp->di_size = i;
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return INT2FIX(i);
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}
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static VALUE
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fsdbm_empty_p(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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int i = 0;
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GetDBM(obj, dbmp);
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if (dbmp->di_size < 0) {
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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i++;
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}
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}
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else {
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i = dbmp->di_size;
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}
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if (i == 0) return Qtrue;
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return Qfalse;
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}
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static VALUE
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fsdbm_each_value(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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rb_yield(rb_tainted_str_new(val.dptr, val.dsize));
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}
|
|
return obj;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_each_key(obj)
|
|
VALUE obj;
|
|
{
|
|
datum key;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_dbm;
|
|
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
|
|
rb_yield(rb_tainted_str_new(key.dptr, key.dsize));
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_each_pair(obj)
|
|
VALUE obj;
|
|
{
|
|
datum key, val;
|
|
DBM *dbm;
|
|
struct dbmdata *dbmp;
|
|
VALUE keystr, valstr;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_dbm;
|
|
|
|
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
|
|
val = sdbm_fetch(dbm, key);
|
|
keystr = rb_tainted_str_new(key.dptr, key.dsize);
|
|
valstr = rb_tainted_str_new(val.dptr, val.dsize);
|
|
rb_yield(rb_assoc_new(keystr, valstr));
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_keys(obj)
|
|
VALUE obj;
|
|
{
|
|
datum key;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
VALUE ary;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_dbm;
|
|
|
|
ary = rb_ary_new();
|
|
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
|
|
rb_ary_push(ary, rb_tainted_str_new(key.dptr, key.dsize));
|
|
}
|
|
|
|
return ary;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_values(obj)
|
|
VALUE obj;
|
|
{
|
|
datum key, val;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
VALUE ary;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_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_tainted_str_new(val.dptr, val.dsize));
|
|
}
|
|
|
|
return ary;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_has_key(obj, keystr)
|
|
VALUE obj, keystr;
|
|
{
|
|
datum key, val;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
|
|
StringValue(keystr);
|
|
key.dptr = RSTRING(keystr)->ptr;
|
|
key.dsize = RSTRING(keystr)->len;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_dbm;
|
|
val = sdbm_fetch(dbm, key);
|
|
if (val.dptr) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_has_value(obj, valstr)
|
|
VALUE obj, valstr;
|
|
{
|
|
datum key, val;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
|
|
StringValue(valstr);
|
|
val.dptr = RSTRING(valstr)->ptr;
|
|
val.dsize = RSTRING(valstr)->len;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_dbm;
|
|
for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
|
|
val = sdbm_fetch(dbm, key);
|
|
if (val.dsize == RSTRING(valstr)->len &&
|
|
memcmp(val.dptr, RSTRING(valstr)->ptr, val.dsize) == 0)
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_to_a(obj)
|
|
VALUE obj;
|
|
{
|
|
datum key, val;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
VALUE ary;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_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_tainted_str_new(key.dptr, key.dsize),
|
|
rb_tainted_str_new(val.dptr, val.dsize)));
|
|
}
|
|
|
|
return ary;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_to_hash(obj)
|
|
VALUE obj;
|
|
{
|
|
datum key, val;
|
|
struct dbmdata *dbmp;
|
|
DBM *dbm;
|
|
VALUE hash;
|
|
|
|
GetDBM(obj, dbmp);
|
|
dbm = dbmp->di_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_tainted_str_new(key.dptr, key.dsize),
|
|
rb_tainted_str_new(val.dptr, val.dsize));
|
|
}
|
|
|
|
return hash;
|
|
}
|
|
|
|
static VALUE
|
|
fsdbm_reject(obj)
|
|
VALUE obj;
|
|
{
|
|
return rb_hash_delete_if(fsdbm_to_hash(obj));
|
|
}
|
|
|
|
void
|
|
Init_sdbm()
|
|
{
|
|
rb_cDBM = rb_define_class("SDBM", rb_cObject);
|
|
rb_eDBMError = rb_define_class("SDBMError", rb_eStandardError);
|
|
rb_include_module(rb_cDBM, rb_mEnumerable);
|
|
|
|
rb_define_alloc_func(rb_cDBM, fsdbm_alloc);
|
|
rb_define_singleton_method(rb_cDBM, "open", fsdbm_s_open, -1);
|
|
|
|
rb_define_method(rb_cDBM, "initialize", fsdbm_initialize, -1);
|
|
rb_define_method(rb_cDBM, "close", fsdbm_close, 0);
|
|
rb_define_method(rb_cDBM, "[]", fsdbm_aref, 1);
|
|
rb_define_method(rb_cDBM, "fetch", fsdbm_fetch_m, -1);
|
|
rb_define_method(rb_cDBM, "[]=", fsdbm_store, 2);
|
|
rb_define_method(rb_cDBM, "store", fsdbm_store, 2);
|
|
rb_define_method(rb_cDBM, "index", fsdbm_index, 1);
|
|
rb_define_method(rb_cDBM, "indexes", fsdbm_indexes, -1);
|
|
rb_define_method(rb_cDBM, "indices", fsdbm_indexes, -1);
|
|
rb_define_method(rb_cDBM, "select", fsdbm_select, -1);
|
|
rb_define_method(rb_cDBM, "values_at", fsdbm_values_at, -1);
|
|
rb_define_method(rb_cDBM, "length", fsdbm_length, 0);
|
|
rb_define_method(rb_cDBM, "size", fsdbm_length, 0);
|
|
rb_define_method(rb_cDBM, "empty?", fsdbm_empty_p, 0);
|
|
rb_define_method(rb_cDBM, "each", fsdbm_each_pair, 0);
|
|
rb_define_method(rb_cDBM, "each_value", fsdbm_each_value, 0);
|
|
rb_define_method(rb_cDBM, "each_key", fsdbm_each_key, 0);
|
|
rb_define_method(rb_cDBM, "each_pair", fsdbm_each_pair, 0);
|
|
rb_define_method(rb_cDBM, "keys", fsdbm_keys, 0);
|
|
rb_define_method(rb_cDBM, "values", fsdbm_values, 0);
|
|
rb_define_method(rb_cDBM, "shift", fsdbm_shift, 0);
|
|
rb_define_method(rb_cDBM, "delete", fsdbm_delete, 1);
|
|
rb_define_method(rb_cDBM, "delete_if", fsdbm_delete_if, 0);
|
|
rb_define_method(rb_cDBM, "reject!", fsdbm_delete_if, 0);
|
|
rb_define_method(rb_cDBM, "reject", fsdbm_reject, 0);
|
|
rb_define_method(rb_cDBM, "clear", fsdbm_clear, 0);
|
|
rb_define_method(rb_cDBM,"invert", fsdbm_invert, 0);
|
|
rb_define_method(rb_cDBM,"update", fsdbm_update, 1);
|
|
rb_define_method(rb_cDBM,"replace", fsdbm_replace, 1);
|
|
|
|
rb_define_method(rb_cDBM, "include?", fsdbm_has_key, 1);
|
|
rb_define_method(rb_cDBM, "has_key?", fsdbm_has_key, 1);
|
|
rb_define_method(rb_cDBM, "member?", fsdbm_has_key, 1);
|
|
rb_define_method(rb_cDBM, "has_value?", fsdbm_has_value, 1);
|
|
rb_define_method(rb_cDBM, "key?", fsdbm_has_key, 1);
|
|
rb_define_method(rb_cDBM, "value?", fsdbm_has_value, 1);
|
|
|
|
rb_define_method(rb_cDBM, "to_a", fsdbm_to_a, 0);
|
|
rb_define_method(rb_cDBM, "to_hash", fsdbm_to_hash, 0);
|
|
}
|