/
sql.go
60 lines (48 loc) · 1.67 KB
/
sql.go
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/* Copyright 2019 Vox Media, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
package bq
import "strings"
// Parse a qualified BigQuery table name, such as
// "[orgname:project.table]" (Legacy) or `orgname.project.table`
// (Standard). Returns three strings: project, dataset and
// table. (Blank if not specified).
func ParseTableSpec(spec string) (proj, ds, table string) {
if strings.HasPrefix(spec, "[") && strings.HasSuffix(spec, "]") { // legacy
// remove [ ]
spec = spec[1 : len(spec)-1]
// extract the project: part
if parts := strings.SplitN(spec, ":", 2); len(parts) > 1 {
proj = parts[0]
spec = parts[1]
}
// extract dataset name
if parts := strings.SplitN(spec, ".", 2); len(parts) > 1 {
ds = parts[0]
table = parts[1]
}
} else if strings.HasPrefix(spec, "`") && strings.HasSuffix(spec, "`") { // standard
// remove ``
spec = spec[1 : len(spec)-1]
parts := strings.SplitN(spec, ".", 3)
if len(parts) == 3 { // proj.dataset.table
proj = parts[0]
ds = parts[1]
table = parts[2]
} else if len(parts) == 2 { // dataset.table
ds = parts[0]
table = parts[1]
} else {
ds = ""
table = parts[0]
}
}
return proj, ds, table
}