Class: WowDBC::DBCFile

Inherits:
Object
  • Object
show all
Defined in:
lib/wow_dbc.rb,
ext/wow_dbc/wow_dbc.c

Instance Method Summary collapse

Constructor Details

#initialize(filepath, field_definitions) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 95

static VALUE dbc_initialize(VALUE self, VALUE filepath, VALUE field_definitions) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    rb_iv_set(self, "@filepath", filepath);
    dbc->field_definitions = rb_hash_dup(field_definitions);
    rb_iv_set(self, "@field_definitions", dbc->field_definitions);

    return self;
}

Instance Method Details

#create_record ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 244

static VALUE dbc_create_record(VALUE self) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    uint32_t new_count = dbc->header.record_count + 1;
    REALLOC_N(dbc->records, FieldValue *, new_count);
    dbc->records[new_count - 1] = ALLOC_N(FieldValue, dbc->header.field_count);
    memset(dbc->records[new_count - 1], 0, dbc->header.field_count * sizeof(FieldValue));

    dbc->header.record_count = new_count;

    return INT2FIX(new_count - 1);
}

#create_record_with_values(values) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 460

static VALUE dbc_create_record_with_values(VALUE self, VALUE values) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    if (!RB_TYPE_P(values, T_HASH)) {
        rb_raise(rb_eArgError, "Values must be a hash");
    }

    // Check for invalid field names
    VALUE keys = rb_funcall(values, rb_intern("keys"), 0);
    for (long i = 0; i < RARRAY_LEN(keys); i++) {
        VALUE key = rb_ary_entry(keys, i);
        if (NIL_P(rb_hash_aref(dbc->field_definitions, key))) {
            rb_raise(rb_eArgError, "Invalid field name: %"PRIsVALUE, key);
        }
    }

    uint32_t new_count = dbc->header.record_count + 1;
    REALLOC_N(dbc->records, FieldValue *, new_count);
    dbc->records[new_count - 1] = ALLOC_N(FieldValue, dbc->header.field_count);

    VALUE field_names = rb_funcall(dbc->field_definitions, rb_intern("keys"), 0);
    for (uint32_t i = 0; i < dbc->header.field_count; i++) {
        VALUE field_name = rb_ary_entry(field_names, i);
        VALUE value = rb_hash_aref(values, field_name);
        VALUE field_type = rb_hash_aref(dbc->field_definitions, field_name);
        FieldType type = ruby_to_field_type(field_type);

        if (NIL_P(value)) {
            // Set default values for missing fields
            switch (type) {
                case TYPE_UINT32:
                case TYPE_INT32:
                    dbc->records[new_count - 1][i].value.uint32_value = 0;
                    break;
                case TYPE_FLOAT:
                    dbc->records[new_count - 1][i].value.float_value = 0.0f;
                    break;
                case TYPE_STRING:
                    dbc->records[new_count - 1][i].value.string_offset = 0; // Empty string
                    break;
            }
        } else {
            if (type == TYPE_STRING) {
                char *str = StringValueCStr(value);
                uint32_t offset = dbc->header.string_block_size;
                uint32_t str_len = strlen(str) + 1;

                dbc->string_block = realloc(dbc->string_block, dbc->header.string_block_size + str_len);
                memcpy(dbc->string_block + offset, str, str_len);
                dbc->header.string_block_size += str_len;

                dbc->records[new_count - 1][i].type = TYPE_STRING;
                dbc->records[new_count - 1][i].value.string_offset = offset;
            } else {
                ruby_to_field_value(value, type, &dbc->records[new_count - 1][i]);
            }
        }
        dbc->records[new_count - 1][i].type = type;
    }

    dbc->header.record_count = new_count;

    return INT2FIX(new_count - 1);
}

#delete_record(index) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 373

static VALUE dbc_delete_record(VALUE self, VALUE index) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    long idx = FIX2LONG(index);

    if (idx < 0 || (uint32_t)idx >= dbc->header.record_count) {
        rb_raise(rb_eArgError, "Invalid record index");
    }

    free(dbc->records[idx]);
    memmove(&dbc->records[idx], &dbc->records[idx + 1], (dbc->header.record_count - idx - 1) * sizeof(FieldValue *));
    dbc->header.record_count--;

    return Qnil;
}

#find_by(field, value) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 390

static VALUE dbc_find_by(VALUE self, VALUE field, VALUE value) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    long field_idx = -1;
    VALUE field_names = rb_funcall(dbc->field_definitions, rb_intern("keys"), 0);

    for (long i = 0; i < RARRAY_LEN(field_names); i++) {
        if (rb_eql(rb_ary_entry(field_names, i), field)) {
            field_idx = i;
            break;
        }
    }

    if (field_idx < 0 || (uint32_t)field_idx >= dbc->header.field_count) {
        rb_raise(rb_eArgError, "Invalid field name");
    }

    VALUE result = rb_ary_new();

    for (uint32_t i = 0; i < dbc->header.record_count; i++) {
        VALUE field_value = field_value_to_ruby(&dbc->records[i][field_idx], dbc->string_block);
        if (rb_eql(field_value, value)) {
            VALUE record = rb_hash_new();
            for (uint32_t j = 0; j < dbc->header.field_count; j++) {
                VALUE field_name = rb_ary_entry(field_names, j);
                rb_hash_aset(record, field_name, field_value_to_ruby(&dbc->records[i][j], dbc->string_block));
            }
            rb_ary_push(result, record);
        }
    }

    return result;
}

#get_record(index) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 299

static VALUE dbc_get_record(VALUE self, VALUE index) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    long idx = FIX2LONG(index);

    if (idx < 0 || (uint32_t)idx >= dbc->header.record_count) {
        rb_raise(rb_eArgError, "Invalid record index");
    }

    VALUE record = rb_hash_new();
    VALUE field_names = rb_funcall(dbc->field_definitions, rb_intern("keys"), 0);
    for (uint32_t i = 0; i < dbc->header.field_count; i++) {
        VALUE field_name = rb_ary_entry(field_names, i);
        rb_hash_aset(record, field_name, field_value_to_ruby(&dbc->records[idx][i], dbc->string_block));
    }

    return record;
}

#header ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 319

static VALUE dbc_get_header(VALUE self) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    VALUE header = rb_hash_new();
    rb_hash_aset(header, ID2SYM(rb_intern("magic")), rb_str_new(dbc->header.magic, 4));
    rb_hash_aset(header, ID2SYM(rb_intern("record_count")), UINT2NUM(dbc->header.record_count));
    rb_hash_aset(header, ID2SYM(rb_intern("field_count")), UINT2NUM(dbc->header.field_count));
    rb_hash_aset(header, ID2SYM(rb_intern("record_size")), UINT2NUM(dbc->header.record_size));
    rb_hash_aset(header, ID2SYM(rb_intern("string_block_size")), UINT2NUM(dbc->header.string_block_size));

    return header;
}

#read ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 106

static VALUE dbc_read(VALUE self) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    VALUE filepath = rb_iv_get(self, "@filepath");
    FILE *file = fopen(StringValueCStr(filepath), "rb");
    if (!file) {
        rb_raise(rb_eIOError, "Could not open file");
    }

    if (fread(&dbc->header, sizeof(DBCHeader), 1, file) != 1) {
        fclose(file);
        rb_raise(rb_eIOError, "Failed to read DBC header");
    }

    if (dbc->records) {
        for (uint32_t i = 0; i < dbc->header.record_count; i++) {
            free(dbc->records[i]);
        }
        free(dbc->records);
    }

    dbc->records = ALLOC_N(FieldValue *, dbc->header.record_count);
    VALUE field_definitions = rb_iv_get(self, "@field_definitions");
    VALUE field_names = rb_funcall(field_definitions, rb_intern("keys"), 0);

    for (uint32_t i = 0; i < dbc->header.record_count; i++) {
        dbc->records[i] = ALLOC_N(FieldValue, dbc->header.field_count);
        for (uint32_t j = 0; j < dbc->header.field_count; j++) {
            VALUE field_name = rb_ary_entry(field_names, j);
            VALUE field_type = rb_hash_aref(field_definitions, field_name);

            FieldType type;
            if (NIL_P(field_type)) {
                type = TYPE_UINT32;  // Default to UINT32 if type is nil
            } else {
                type = ruby_to_field_type(field_type);
            }
            dbc->records[i][j].type = type;

            if (fread(&dbc->records[i][j].value, sizeof(uint32_t), 1, file) != 1) {
                fclose(file);
                rb_raise(rb_eIOError, "Failed to read DBC record field");
            }

            switch (type) {
                case TYPE_UINT32:
                    break;
                case TYPE_INT32:
                    break;
                case TYPE_FLOAT:
                    break;
                case TYPE_STRING:
                    break;
            }
        }
    }

    if (dbc->string_block) {
        free(dbc->string_block);
    }

    dbc->string_block = ALLOC_N(char, dbc->header.string_block_size);
    if (fread(dbc->string_block, 1, dbc->header.string_block_size, file) != dbc->header.string_block_size) {
        fclose(file);
        rb_raise(rb_eIOError, "Failed to read DBC string block");
    }

    fclose(file);

    return self;
}

#update_record(index, field, value) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 258

static VALUE dbc_update_record(VALUE self, VALUE index, VALUE field, VALUE value) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    long idx = FIX2LONG(index);
    long field_idx = -1;

    VALUE field_names = rb_funcall(dbc->field_definitions, rb_intern("keys"), 0);
    for (long i = 0; i < RARRAY_LEN(field_names); i++) {
        if (rb_eql(rb_ary_entry(field_names, i), field)) {
            field_idx = i;
            break;
        }
    }

    if (idx < 0 || (uint32_t)idx >= dbc->header.record_count || field_idx < 0 || (uint32_t)field_idx >= dbc->header.field_count) {
        rb_raise(rb_eArgError, "Invalid record or field index");
    }

    VALUE field_type = rb_hash_aref(dbc->field_definitions, field);
    FieldType type = ruby_to_field_type(field_type);

    if (type == TYPE_STRING) {
        // For string fields, we need to update the string block
        char *str = StringValueCStr(value);
        uint32_t offset = dbc->header.string_block_size;
        uint32_t str_len = strlen(str) + 1;

        dbc->string_block = realloc(dbc->string_block, dbc->header.string_block_size + str_len);
        memcpy(dbc->string_block + offset, str, str_len);
        dbc->header.string_block_size += str_len;

        dbc->records[idx][field_idx].type = TYPE_STRING;
        dbc->records[idx][field_idx].value.string_offset = offset;
    } else {
        ruby_to_field_value(value, type, &dbc->records[idx][field_idx]);
    }

    return Qnil;
}

#update_record_multi(index, updates) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 333

static VALUE dbc_update_record_multi(VALUE self, VALUE index, VALUE updates) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    long idx = FIX2LONG(index);

    if (idx < 0 || (uint32_t)idx >= dbc->header.record_count) {
        rb_raise(rb_eArgError, "Invalid record index");
    }

    if (RB_TYPE_P(updates, T_HASH)) {
        VALUE keys = rb_funcall(updates, rb_intern("keys"), 0);
        for (long i = 0; i < RARRAY_LEN(keys); i++) {
            VALUE key = rb_ary_entry(keys, i);
            VALUE value = rb_hash_aref(updates, key);
            long field_idx = -1;

            VALUE field_names = rb_funcall(dbc->field_definitions, rb_intern("keys"), 0);
            for (long j = 0; j < RARRAY_LEN(field_names); j++) {
                if (rb_eql(rb_ary_entry(field_names, j), key)) {
                    field_idx = j;
                    break;
                }
            }

            if (field_idx >= 0 && (uint32_t)field_idx < dbc->header.field_count) {
                VALUE field_type = rb_hash_aref(dbc->field_definitions, key);
                FieldType type = ruby_to_field_type(field_type);
                ruby_to_field_value(value, type, &dbc->records[idx][field_idx]);
            } else {
                rb_raise(rb_eArgError, "Invalid field name: %"PRIsVALUE, key);
            }
        }
    } else {
        rb_raise(rb_eArgError, "Updates must be a hash");
    }

    return Qnil;
}

#write ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 179

static VALUE dbc_write(VALUE self) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    VALUE filepath = rb_iv_get(self, "@filepath");
    FILE *file = fopen(StringValueCStr(filepath), "wb");
    if (!file) {
        rb_raise(rb_eIOError, "Could not open file for writing");
    }

    if (fwrite(&dbc->header, sizeof(DBCHeader), 1, file) != 1) {
        fclose(file);
        rb_raise(rb_eIOError, "Failed to write DBC header");
    }

    for (uint32_t i = 0; i < dbc->header.record_count; i++) {
        for (uint32_t j = 0; j < dbc->header.field_count; j++) {
            if (fwrite(&dbc->records[i][j].value, sizeof(uint32_t), 1, file) != 1) {
                fclose(file);
                rb_raise(rb_eIOError, "Failed to write DBC record field");
            }
        }
    }

    if (fwrite(dbc->string_block, 1, dbc->header.string_block_size, file) != dbc->header.string_block_size) {
        fclose(file);
        rb_raise(rb_eIOError, "Failed to write DBC string block");
    }

    fclose(file);
    return self;
}

#write_to(new_filepath) ⇒ Object 



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# File 'ext/wow_dbc/wow_dbc.c', line 425

static VALUE dbc_write_to(VALUE self, VALUE new_filepath) {
    DBCFile *dbc;
    TypedData_Get_Struct(self, DBCFile, &dbc_data_type, dbc);

    Check_Type(new_filepath, T_STRING);
    const char *path = StringValueCStr(new_filepath);

    FILE *file = fopen(path, "wb");
    if (!file) {
        rb_raise(rb_eIOError, "Could not open file for writing: %s", path);
    }

    if (fwrite(&dbc->header, sizeof(DBCHeader), 1, file) != 1) {
        fclose(file);
        rb_raise(rb_eIOError, "Failed to write DBC header");
    }

    for (uint32_t i = 0; i < dbc->header.record_count; i++) {
        for (uint32_t j = 0; j < dbc->header.field_count; j++) {
            if (fwrite(&dbc->records[i][j].value, sizeof(uint32_t), 1, file) != 1) {
                fclose(file);
                rb_raise(rb_eIOError, "Failed to write DBC record");
            }
        }
    }

    if (fwrite(dbc->string_block, 1, dbc->header.string_block_size, file) != dbc->header.string_block_size) {
        fclose(file);
        rb_raise(rb_eIOError, "Failed to write DBC string block");
    }

    fclose(file);
    return self;
}