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Support String Constants with Escapes in SQL files.

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pgloader has to parse external SQL files because of the driver we use,
Postmodern, only know how to deal with sending one query at a time. So
SQL parsing we do, and split the queries, and send them one after the
other to the server.

PostgreSQL allows String Constants with C-style Escapes to be used in
some situations, and the SQL parsing done in pgloader failed to support
that.

  http://www.postgresql.org/docs/9.4/static/sql-syntax-lexical.html#SQL-SYNTAX-STRINGS-ESCAPE

This fixes #284.
This commit is contained in:
Dimitri Fontaine 2015-08-31 20:34:22 +02:00
parent 72fdf112ff
commit 62f0b7fc56
1 changed files with 9 additions and 0 deletions
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9
src/utils/read-sql-files.lisp
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@ -160,6 +160,15 @@ Another test case for the classic quotes:
(otherwise (cond ((member (parser-state state) '(:eat :eqt))
(write-char char (parser-stream state)))
;; see
;; http://www.postgresql.org/docs/9.4/static/sql-syntax-lexical.html#SQL-SYNTAX-STRINGS-ESCAPE
;; we re-inject whatever we read in the \x
;; syntax into the stream and let PostgreSQL
;; be the judge of what it means.
((member (parser-state state) '(:esc))
(write-char char (parser-stream state))
(setf (parser-state state) :eqt))
((member (parser-state state) '(:tag))
;; only letters are allowed in tags
(if (alpha-char-p char)