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master
test/json/json-generator.tcl
401 строка
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drh
Fix indentation and omit trailing whitespace in the random JSON generator
28 апр 2023, 16:25
28 апр 2023, 16:25
016f466
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#!/usr/bin/tclsh # # Generate SQL that will populate an SQLite database with about 100 megabytes # of pseudo-random JSON text. # # tclsh json-generator.tcl | sqlite3 json110mb.db # # srand() is used to initialize the random seed so that the same JSON # is generated for every run. # expr srand(12345678) set wordlist { ability able abroad access account act action active actor add address adept adroit advance advice affect age ageless agency agent agile agree air airfare airline airport alert almond alpha always amend amount amplify analyst anchor angel angelic angle ankle annual answer antique anybody anyhow appeal apple apricot apt area argon arm army arrival arsenic art artful article arugula aside ask aspect assist assume atom atone attempt author autumn average avocado award awl azure back bacon bag bagel bake baker balance ball balloon bamboo banana band banjo bank barium base basil basin basis basket bass bat bath battery beach beak bean bear bearcub beauty beef beet beige being 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stick still stock stone stop store storm story strain street stress strike string stroke strong studio study stuff style sugar suit sulfur summer sun sunny sunset super superb surf survey sweet swim swing switch symbol system table tackle tail tale talk tan tank tap tape target task taste tau tea teach teal team tear tell ten tender tennis tent term test tetra text thanks theme theory thing think thread throat thumb ticket tidy tie tiger till time timely tin tip title toast today toe tomato tone tongue tool tooth top topic total touch tough tour towel tower town track trade train trash travel tray treat tree trick trip trout trowel truck trupet trust truth try tube tuna tune turf turkey turn turnip tutor tux tweet twist two type union unique unit upbeat upper use useful user usual valley value van vase vast veil vein velvet verse very vessel vest video view violet visit visual vivid voice volume vowel voyage waffle wait wake walk wall warm warmth wasabi wash watch water wave wax way wealth wear web wedge week weekly weight west whale what wheat wheel when where while who whole why will win wind window wing winner winter wire wish witty wolf wonder wood wool woolly word work worker world worry worth worthy wrap wrench wrist writer xenon yak yam yard yarrow year yearly yellow yew yogurt young youth zebra zephyr zinc zone zoo } set nwordlist [llength $wordlist] proc random_char {} { return [string index \ "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" \ [expr {int(rand()*52)}]] } proc random_label {} { set label [random_char] while {rand()>0.8} { append label [random_char] } if {rand()>0.9} {append label -} append label [format %d [expr {int(rand()*100)}]] return $label } proc random_numeric {} { set n [expr {(rand()*2-1.0)*1e6}] switch [expr {int(rand()*6)}] { 0 {set format %.3f} 1 {set format %.6E} 2 {set format %.4e} default {set format %g} } return [format $format $n] } proc random_json {limit indent} { global nwordlist wordlist set res {} if {$indent==0 || ($limit>0 && rand()>0.5)} { incr limit -1 incr indent 2 set n [expr {int(rand()*5)+1}] if {$n==5} {incr n [expr {int(rand()*10)}]} if {rand()>0.5} { set res \173\n for {set i 0} {$i<$n} {incr i} { append res [string repeat { } $indent] if {rand()>0.8} { if {rand()>0.5} { set sep ":\n [string repeat { } $indent]" } else { set sep " : " } } else { set sep : } append res \"[random_label]\"$sep[random_json $limit $indent] if {$i<$n-1} {append res ,} append res \n } incr indent -2 append res [string repeat { } $indent] append res \175 return $res } else { set res \[\n for {set i 0} {$i<$n} {incr i} { append res [string repeat { } $indent] append res [random_json $limit $indent] if {$i<$n-1} {append res ,} append res \n } incr indent -2 append res [string repeat { } $indent] append res \] return $res } } elseif {rand()>0.9} { if {rand()>0.7} {return "true"} if {rand()>0.5} {return "false"} return "null" } elseif {rand()>0.5} { return [random_numeric] } else { set res \" set n [expr {int(rand()*4)+1}] if {$n>=4} {set n [expr {$n+int(rand()*6)}]} for {set i 0} {$i<$n} {incr i} { if {rand()<0.05} { set w [random_numeric] } else { set k [expr {int(rand()*$nwordlist)}] set w [lindex $wordlist $k] } if {rand()<0.07} { set w \\\"$w\\\" } if {$i<$n-1} { switch [expr {int(rand()*9)}] { 0 {set sp {, }} 1 {set sp "\\n "} 2 {set sp "-"} default {set sp { }} } append res $w$sp } else { append res $w if {rand()<0.2} {append res .} } } return $res\" } } puts "CREATE TABLE IF NOT EXISTS data1(x JSON);" puts "BEGIN;" set sz 0 for {set i 0} {$sz<100000000} {incr i} { set j [random_json 7 0] incr sz [string length $j] puts "INSERT INTO data1(x) VALUES('$j');" } puts "COMMIT;" puts "SELECT sum(length(x)) FROM data1;"