What is this ?

SQL interface for po(gettext) files.

Motivation

Use po file as a database. Can be useful for cli tools, UI interfaces, data exploration, also for fun.

Supported SQL

SELECT
UPDATE
SET
WHERE
AND
OR
NOT
COUNT
LIKE
LIMIT

Available columns

msgid, msgstr, msgstr[0-9], msgctxt, msgid_plural

Examples

As database:

import {PoDb} from 'podb';
// open current directory as db
const db = new PoDb('.'); 
 // catalog is a table points to catalog.po in './'
const messages = db.execute("select count(1) from catalog")
console.log(messages); // 42

As table:

import * as fs from 'fs'
import {PoTable} from 'podb';
// open in memory data as a table
const table = new PoTable(fs.readFileSync('catalog.po').toString()); 
// table name is irrelevant in select clauses except 'table' is a reserved word
// get all untranslated records
table.execute("select * from t where not msgstr")); 
// [{ msgid: ' в категории %s',
//     msgctxt: null,
//     references: [ 'myproj/lib/title.py:959' ],
//     msgid_plural: null,
//     msgstr: [ '' ],
//     comments: [],
//     extractedComments: [],
//     flags: { 'python-format': true },
//     obsolete: false,
//     nplurals: 3 },
//  ....
//]

Compound statements

// get all untranslated plural strings
table.execute("select * from t where msgid_plural and not msgstr")); 

LIKE

table.execute("select * from t where msgstr like 'пошук'")
// [ { msgid: ' Продажа, поиск, поставщики и магазины, все цены',
//     msgctxt: null,
//     references: [ 'myproj/lib/title.py:1014' ],
//     msgid_plural: null,
//     msgstr: [ ' Продаж, пошук, постачальники та магазини, всі ціни' ],
//     comments: [],
//     extractedComments: [],
//     flags: {},
//     obsolete: false,
//     nplurals: 3 },

Advanced LIKE for case insensitive search

table.execute("select * from t where msgstr like '/продаж/i'")
// [ { msgid: ' Продажа, поиск, поставщики и магазины, все цены',
//     msgctxt: null,
//     references: [ 'myproj/lib/title.py:1014' ],
//     msgid_plural: null,
//     msgstr: [ ' Продаж, пошук, постачальники та магазини, всі ціни' ],
//     comments: [],
//     extractedComments: [],
//     flags: {},
//     obsolete: false,
//     nplurals: 3 },
//     ...
//     ]

LIMIT/OFFSET

table.execute("select * from t limit 10,20"); // offset 10 limit 20

UPDATE

table.getTableData()
// msgid ""
// msgstr ""
// "Content-Type: text/plain; charset=utf-8\n"
// "Plural-Forms: nplurals=2; plural=(n!=1);\n"

// #: tests/fixtures/checkTest/check-trans-exist.js:2
// #: tests/fixtures/checkTest/check-trans-exist.js:3
// msgid "test"
// msgstr ""

table.execute("update simple set msgstr='value' where msgid='test'"); // 1
table.getTableData();

// msgid ""
// msgstr ""
// "Content-Type: text/plain; charset=utf-8\n"
// "Plural-Forms: nplurals=2; plural=(n!=1);\n"

// #: tests/fixtures/checkTest/check-trans-exist.js:2
// #: tests/fixtures/checkTest/check-trans-exist.js:3
// msgid "test"
// msgstr "value"

Or as db

 // sync to file
db.execute("update simple set msgstr='value' where msgid='test'", true);

Plurals

In case message has multiple plural forms, all operations must be made by specifying an additional index in the column name i.e:

msgstr2

As indexes start with 0, this refers to third form of the message, otherwise it will be treated like singular.

// get all items with second form equals to 'xxx'
table.execute("select count(1) from t where msgstr1='xxx'")

// update an item and set it's first form to 'yyy'
table.execute("update t set msgstr0='yyy' where msgstr1='xxx'")

Plans

• IN operator
• ORDER operator
• handy functions(LOWER, UPPER)

Kudos

rubenv for excelent pofile library.

godmodelabs for handy flora-sql-parser