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-rw-r--r--third_party/sqlite/src/test/wal_common.tcl91
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diff --git a/third_party/sqlite/src/test/wal_common.tcl b/third_party/sqlite/src/test/wal_common.tcl
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-# 2010 June 03
-#
-# The author disclaims copyright to this source code. In place of
-# a legal notice, here is a blessing:
-#
-# May you do good and not evil.
-# May you find forgiveness for yourself and forgive others.
-# May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-# This file contains common code used by many different malloc tests
-# within the test suite.
-#
-
-proc wal_file_size {nFrame pgsz} {
- expr {32 + ($pgsz+24)*$nFrame}
-}
-
-proc wal_frame_count {zFile pgsz} {
- set f [file size $zFile]
- expr {($f - 32) / ($pgsz+24)}
-}
-
-proc wal_cksum_intlist {ckv1 ckv2 intlist} {
- upvar $ckv1 c1
- upvar $ckv2 c2
- foreach {v1 v2} $intlist {
- set c1 [expr {($c1 + $v1 + $c2)&0xFFFFFFFF}]
- set c2 [expr {($c2 + $v2 + $c1)&0xFFFFFFFF}]
- }
-}
-
-
-# This proc calculates checksums in the same way as those used by SQLite
-# in WAL files. If the $endian argument is "big", then checksums are
-# calculated by interpreting data as an array of big-endian integers. If
-# it is "little", data is interpreted as an array of little-endian integers.
-#
-proc wal_cksum {endian ckv1 ckv2 blob} {
- upvar $ckv1 c1
- upvar $ckv2 c2
-
- if {$endian!="big" && $endian!="little"} {
- return -error "Bad value \"$endian\" - must be \"big\" or \"little\""
- }
- set scanpattern I*
- if {$endian == "little"} { set scanpattern i* }
-
- binary scan $blob $scanpattern values
- wal_cksum_intlist c1 c2 $values
-}
-
-proc wal_set_walhdr {filename {intlist {}}} {
- if {[llength $intlist]==6} {
- set blob [binary format I6 $intlist]
- set endian little
- if {[lindex $intlist 0] & 0x00000001} { set endian big }
- set c1 0
- set c2 0
- wal_cksum $endian c1 c2 $blob
- append blob [binary format II $c1 $c2]
-
- set fd [open $filename r+]
- fconfigure $fd -translation binary
- fconfigure $fd -encoding binary
- seek $fd 0
- puts -nonewline $fd $blob
- close $fd
- }
-
- set fd [open $filename]
- fconfigure $fd -translation binary
- fconfigure $fd -encoding binary
- set blob [read $fd 24]
- close $fd
-
- binary scan $blob I6 ints
- set ints
-}
-
-proc wal_fix_walindex_cksum {hdrvar} {
- upvar $hdrvar hdr
- set c1 0
- set c2 0
- wal_cksum_intlist c1 c2 [lrange $hdr 0 9]
- lset hdr 10 $c1
- lset hdr 11 $c2
-}
-
-