Start work on introducing machine-readable error codes.

This commit introduces a new type 'ErrNo', implementing the error
interface.  Constants for all sqlite3 error codes are provided
in the new source file "error.go".

1 files changed, 41 insertions, 0 deletions

diff --git a/error.go b/error.go
new file mode 100644
index 0000000..15c843e
--- /dev/null
+++ b/error.go
@@ -0,0 +1,41 @@
+package sqlite3
+
+import "C"
+
+type ErrNo int
+
+// result codes from http://www.sqlite.org/c3ref/c_abort.html
+var (
+	ErrError      error = ErrNo(1)  /* SQL error or missing database */
+	ErrInternal   error = ErrNo(2)  /* Internal logic error in SQLite */
+	ErrPerm       error = ErrNo(3)  /* Access permission denied */
+	ErrAbort      error = ErrNo(4)  /* Callback routine requested an abort */
+	ErrBusy       error = ErrNo(5)  /* The database file is locked */
+	ErrLocked     error = ErrNo(6)  /* A table in the database is locked */
+	ErrNomem      error = ErrNo(7)  /* A malloc() failed */
+	ErrReadonly   error = ErrNo(8)  /* Attempt to write a readonly database */
+	ErrInterrupt  error = ErrNo(9)  /* Operation terminated by sqlite3_interrupt() */
+	ErrIoErr      error = ErrNo(10) /* Some kind of disk I/O error occurred */
+	ErrCorrupt    error = ErrNo(11) /* The database disk image is malformed */
+	ErrNotFound   error = ErrNo(12) /* Unknown opcode in sqlite3_file_control() */
+	ErrFull       error = ErrNo(13) /* Insertion failed because database is full */
+	ErrCantOpen   error = ErrNo(14) /* Unable to open the database file */
+	ErrProtocol   error = ErrNo(15) /* Database lock protocol error */
+	ErrEmpty      error = ErrNo(16) /* Database is empty */
+	ErrSchema     error = ErrNo(17) /* The database schema changed */
+	ErrTooBig     error = ErrNo(18) /* String or BLOB exceeds size limit */
+	ErrConstraint error = ErrNo(19) /* Abort due to constraint violation */
+	ErrMismatch   error = ErrNo(20) /* Data type mismatch */
+	ErrMisuse     error = ErrNo(21) /* Library used incorrectly */
+	ErrNoLFS      error = ErrNo(22) /* Uses OS features not supported on host */
+	ErrAuth       error = ErrNo(23) /* Authorization denied */
+	ErrFormat     error = ErrNo(24) /* Auxiliary database format error */
+	ErrRange      error = ErrNo(25) /* 2nd parameter to sqlite3_bind out of range */
+	ErrNotADB     error = ErrNo(26) /* File opened that is not a database file */
+	ErrNotice     error = ErrNo(27) /* Notifications from sqlite3_log() */
+	ErrWarning    error = ErrNo(28) /* Warnings from sqlite3_log() */
+)
+
+func (err ErrNo) Error() string {
+	return errorString(err)
+}