diff options
Diffstat (limited to 'ruby_1_8_6/ext/sdbm/init.c')
-rw-r--r-- | ruby_1_8_6/ext/sdbm/init.c | 788 |
1 files changed, 788 insertions, 0 deletions
diff --git a/ruby_1_8_6/ext/sdbm/init.c b/ruby_1_8_6/ext/sdbm/init.c new file mode 100644 index 0000000000..acadc9b26a --- /dev/null +++ b/ruby_1_8_6/ext/sdbm/init.c @@ -0,0 +1,788 @@ +/************************************************ + + sdbminit.c - + + $Author$ + $Date$ + created at: Fri May 7 08:34:24 JST 1999 + + Copyright (C) 1995-2001 Yukihiro Matsumoto + +************************************************/ + +#include "ruby.h" + +#include "sdbm.h" +#include <fcntl.h> +#include <errno.h> + +static VALUE rb_cDBM, rb_eDBMError; + +struct dbmdata { + int di_size; + DBM *di_dbm; +}; + +static void +closed_sdbm() +{ + rb_raise(rb_eDBMError, "closed SDBM file"); +} + +#define GetDBM(obj, dbmp) {\ + Data_Get_Struct(obj, struct dbmdata, dbmp);\ + if (dbmp == 0) closed_sdbm();\ + if (dbmp->di_dbm == 0) closed_sdbm();\ +} + +#define GetDBM2(obj, data, dbm) {\ + GetDBM(obj, data);\ + (dbm) = dbmp->di_dbm;\ +} + +static void +free_sdbm(dbmp) + struct dbmdata *dbmp; +{ + + if (dbmp->di_dbm) sdbm_close(dbmp->di_dbm); + free(dbmp); +} + +static VALUE +fsdbm_close(obj) + VALUE obj; +{ + struct dbmdata *dbmp; + + GetDBM(obj, dbmp); + sdbm_close(dbmp->di_dbm); + dbmp->di_dbm = 0; + + return Qnil; +} + +static VALUE +fsdbm_closed(obj) + 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; +} + +static VALUE fsdbm_alloc _((VALUE)); +static VALUE +fsdbm_alloc(klass) + VALUE klass; +{ + return Data_Wrap_Struct(klass, 0, free_sdbm, 0); +} + +static VALUE +fsdbm_initialize(argc, argv, obj) + int argc; + VALUE *argv; + VALUE obj; +{ + VALUE file, 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); + } + SafeStringValue(file); + + dbm = 0; + if (mode >= 0) + dbm = sdbm_open(RSTRING(file)->ptr, O_RDWR|O_CREAT, mode); + if (!dbm) + dbm = sdbm_open(RSTRING(file)->ptr, O_RDWR, 0); + if (!dbm) + dbm = sdbm_open(RSTRING(file)->ptr, O_RDONLY, 0); + + if (!dbm) { + if (mode == -1) return Qnil; + rb_sys_fail(RSTRING(file)->ptr); + } + + dbmp = ALLOC(struct dbmdata); + DATA_PTR(obj) = dbmp; + dbmp->di_dbm = dbm; + dbmp->di_size = -1; + + return obj; +} + +static VALUE +fsdbm_s_open(argc, argv, klass) + 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; +} + +static VALUE +fsdbm_fetch(obj, keystr, ifnone) + VALUE obj, keystr, ifnone; +{ + datum key, value; + struct dbmdata *dbmp; + DBM *dbm; + + StringValue(keystr); + key.dptr = RSTRING(keystr)->ptr; + key.dsize = RSTRING(keystr)->len; + + GetDBM2(obj, dbmp, dbm); + value = sdbm_fetch(dbm, key); + if (value.dptr == 0) { + if (ifnone == Qnil && rb_block_given_p()) + return rb_yield(rb_tainted_str_new(key.dptr, key.dsize)); + return ifnone; + } + return rb_tainted_str_new(value.dptr, value.dsize); +} + +static VALUE +fsdbm_aref(obj, keystr) + VALUE obj, keystr; +{ + return fsdbm_fetch(obj, keystr, Qnil); +} + +static VALUE +fsdbm_fetch_m(argc, argv, obj) + 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; +} + +static VALUE +fsdbm_index(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; + + GetDBM2(obj, dbmp, 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 rb_tainted_str_new(key.dptr, key.dsize); + } + return Qnil; +} + +static VALUE +fsdbm_indexes(argc, argv, obj) + int argc; + VALUE *argv; + VALUE obj; +{ + VALUE new; + int i; + + new = rb_ary_new2(argc); + for (i=0; i<argc; i++) { + rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil)); + } + + return new; +} + +static VALUE +fsdbm_select(argc, argv, obj) + int argc; + VALUE *argv; + VALUE obj; +{ + VALUE new = rb_ary_new2(argc); + int i; + + if (rb_block_given_p()) { + datum key, val; + DBM *dbm; + struct dbmdata *dbmp; + + if (argc > 0) { + rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc); + } + 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_tainted_str_new(key.dptr, key.dsize), + rb_tainted_str_new(val.dptr, val.dsize)); + v = rb_yield(assoc); + if (RTEST(v)) { + rb_ary_push(new, assoc); + } + GetDBM2(obj, dbmp, dbm); + } + } + else { + rb_warn("SDBM#select(index..) is deprecated; use SDBM#values_at"); + + for (i=0; i<argc; i++) { + rb_ary_push(new, fsdbm_fetch(obj, argv[i], Qnil)); + } + } + + return new; +} + +static VALUE +fsdbm_values_at(argc, argv, obj) + 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; +} + +static void +fdbm_modify(obj) + VALUE obj; +{ + rb_secure(4); + if (OBJ_FROZEN(obj)) rb_error_frozen("SDBM"); +} + +static VALUE +fsdbm_delete(obj, keystr) + VALUE obj, keystr; +{ + datum key, value; + struct dbmdata *dbmp; + DBM *dbm; + VALUE valstr; + + fdbm_modify(obj); + StringValue(keystr); + key.dptr = RSTRING(keystr)->ptr; + key.dsize = RSTRING(keystr)->len; + + 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_tainted_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; +} + +static VALUE +fsdbm_shift(obj) + 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_tainted_str_new(key.dptr, key.dsize); + valstr = rb_tainted_str_new(val.dptr, val.dsize); + sdbm_delete(dbm, key); + if (dbmp->di_size >= 0) { + dbmp->di_size--; + } + + return rb_assoc_new(keystr, valstr); +} + +static VALUE +fsdbm_delete_if(obj) + 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_tainted_str_new(key.dptr, key.dsize); + valstr = rb_tainted_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(ary)->len; i++) { + keystr = RARRAY(ary)->ptr[i]; + StringValue(keystr); + key.dptr = RSTRING(keystr)->ptr; + key.dsize = RSTRING(keystr)->len; + 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(ary)->len; + + return obj; +} + +static VALUE +fsdbm_clear(obj) + 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; +} + +static VALUE +fsdbm_invert(obj) + 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_tainted_str_new(key.dptr, key.dsize); + valstr = rb_tainted_str_new(val.dptr, val.dsize); + rb_hash_aset(hash, valstr, keystr); + } + return hash; +} + +static VALUE each_pair _((VALUE)); + +static VALUE +each_pair(obj) + VALUE obj; +{ + return rb_funcall(obj, rb_intern("each_pair"), 0, 0); +} + +static VALUE fsdbm_store _((VALUE,VALUE,VALUE)); + +static VALUE +update_i(pair, dbm) + VALUE pair, dbm; +{ + Check_Type(pair, T_ARRAY); + if (RARRAY(pair)->len < 2) { + rb_raise(rb_eArgError, "pair must be [key, value]"); + } + fsdbm_store(dbm, RARRAY(pair)->ptr[0], RARRAY(pair)->ptr[1]); + return Qnil; +} + +static VALUE +fsdbm_update(obj, other) + VALUE obj, other; +{ + rb_iterate(each_pair, other, update_i, obj); + return obj; +} + +static VALUE +fsdbm_replace(obj, other) + VALUE obj, other; +{ + fsdbm_clear(obj); + rb_iterate(each_pair, other, update_i, obj); + return obj; +} + +static VALUE +fsdbm_store(obj, keystr, valstr) + VALUE obj, keystr, valstr; +{ + datum key, val; + struct dbmdata *dbmp; + DBM *dbm; + + if (valstr == Qnil) { + fsdbm_delete(obj, keystr); + return Qnil; + } + + fdbm_modify(obj); + StringValue(keystr); + StringValue(valstr); + + key.dptr = RSTRING(keystr)->ptr; + key.dsize = RSTRING(keystr)->len; + + val.dptr = RSTRING(valstr)->ptr; + val.dsize = RSTRING(valstr)->len; + + 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; +} + +static VALUE +fsdbm_length(obj) + 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); +} + +static VALUE +fsdbm_empty_p(obj) + 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; +} + +static VALUE +fsdbm_each_value(obj) + VALUE obj; +{ + datum key, val; + struct dbmdata *dbmp; + DBM *dbm; + + GetDBM2(obj, dbmp, dbm); + for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) { + val = sdbm_fetch(dbm, key); + rb_yield(rb_tainted_str_new(val.dptr, val.dsize)); + GetDBM2(obj, dbmp, dbm); + } + return obj; +} + +static VALUE +fsdbm_each_key(obj) + VALUE obj; +{ + datum key; + struct dbmdata *dbmp; + DBM *dbm; + + GetDBM2(obj, dbmp, dbm); + for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) { + rb_yield(rb_tainted_str_new(key.dptr, key.dsize)); + GetDBM2(obj, dbmp, dbm); + } + return obj; +} + +static VALUE +fsdbm_each_pair(obj) + VALUE obj; +{ + datum key, val; + DBM *dbm; + struct dbmdata *dbmp; + VALUE keystr, valstr; + + GetDBM2(obj, dbmp, 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)); + GetDBM2(obj, dbmp, dbm); + } + + return obj; +} + +static VALUE +fsdbm_keys(obj) + 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_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; + + 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_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; + + GetDBM2(obj, dbmp, 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; + + GetDBM2(obj, dbmp, 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; + + 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_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; + + 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_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, "closed?", fsdbm_closed, 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); +} |