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Use ansi escape codes to use different colored text for opcode names in the output of [explain_i]: Red for opcodes that insert or delete b-tree elements, blue for opcodes that move cursors and green for the ResultRow opcode.

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FossilOrigin-Name: 4be2b64b3e5237ee1fb156c06cffaf7d96f6c532
This commit is contained in:
dan
2013-11-06 14:52:40 +00:00
parent b41392241e
commit 5c663c3002
3 changed files with 38 additions and 11 deletions
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33
test/tester.tcl
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@ -1029,6 +1029,29 @@ proc explain_i {sql {db db}} {
puts "---- ------------ ------ ------ ------ ---------------- -- -"
# Set up colors for the different opcodes. Scheme is as follows:
#
# Red: Opcodes that write to a b-tree.
# Blue: Opcodes that reposition or seek a cursor.
# Green: The ResultRow opcode.
#
set R "\033\[31;1m" ;# Red fg
set G "\033\[32;1m" ;# Green fg
set B "\033\[34;1m" ;# Red fg
set D "\033\[39;0m" ;# Default fg
foreach opcode {
Seek SeekGe SeekGt SeekLe SeekLt NotFound Last Rewind
NoConflict Next Prev
} {
set color($opcode) $B
}
foreach opcode {ResultRow} {
set color($opcode) $G
}
foreach opcode {IdxInsert Insert Delete IdxDelete} {
set color($opcode) $R
}
set bSeenGoto 0
$db eval "explain $sql" {} {
set x($addr) 0
@ -1039,7 +1062,7 @@ proc explain_i {sql {db db}} {
set bSeenGoto 1
}
if {$opcode == "Next"} {
if {$opcode == "Next" || $opcode=="Prev"} {
for {set i $p2} {$i<$addr} {incr i} {
incr x($i) 2
}
@ -1061,8 +1084,12 @@ proc explain_i {sql {db db}} {
puts ""
}
set I [string repeat " " $x($addr)]
puts [format {%-4d %s%-12.12s %-6d %-6d %-6d % -17s %s %s} \
$addr $I $opcode $p1 $p2 $p3 $p4 $p5 $comment
set col ""
catch { set col $color($opcode) }
puts [format {%-4d %s%s%-12.12s%s %-6d %-6d %-6d % -17s %s %s} \
$addr $I $col $opcode $D $p1 $p2 $p3 $p4 $p5 $comment
]
}
puts "---- ------------ ------ ------ ------ ---------------- -- -"