FilesExpand file tree

master

/

strings.lua

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

485 lines (410 loc) · 16.2 KB

master

/

strings.lua

Copy path

Top

File metadata and controls

• Code
• Blame

485 lines (410 loc) · 16.2 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

-- $Id: testes/strings.lua $

-- See Copyright Notice in file all.lua

print('testing strings and string library')

local maxi <const> = math.maxinteger

local mini <const> = math.mininteger

local function checkerror (msg, f, ...)

local s, err = pcall(f, ...)

assert(not s and string.find(err, msg))

end

-- testing string comparisons

assert('alo' < 'alo1')

assert('' < 'a')

assert('alo\0alo' < 'alo\0b')

assert('alo\0alo\0\0' > 'alo\0alo\0')

assert('alo' < 'alo\0')

assert('alo\0' > 'alo')

assert('\0' < '\1')

assert('\0\0' < '\0\1')

assert('\1\0a\0a' <= '\1\0a\0a')

assert(not ('\1\0a\0b' <= '\1\0a\0a'))

assert('\0\0\0' < '\0\0\0\0')

assert(not('\0\0\0\0' < '\0\0\0'))

assert('\0\0\0' <= '\0\0\0\0')

assert(not('\0\0\0\0' <= '\0\0\0'))

assert('\0\0\0' <= '\0\0\0')

assert('\0\0\0' >= '\0\0\0')

assert(not ('\0\0b' < '\0\0a\0'))

-- testing string.sub

assert(string.sub("123456789",2,4) == "234")

assert(string.sub("123456789",7) == "789")

assert(string.sub("123456789",7,6) == "")

assert(string.sub("123456789",7,7) == "7")

assert(string.sub("123456789",0,0) == "")

assert(string.sub("123456789",-10,10) == "123456789")

assert(string.sub("123456789",1,9) == "123456789")

assert(string.sub("123456789",-10,-20) == "")

assert(string.sub("123456789",-1) == "9")

assert(string.sub("123456789",-4) == "6789")

assert(string.sub("123456789",-6, -4) == "456")

assert(string.sub("123456789", mini, -4) == "123456")

assert(string.sub("123456789", mini, maxi) == "123456789")

assert(string.sub("123456789", mini, mini) == "")

assert(string.sub("\000123456789",3,5) == "234")

assert(("\000123456789"):sub(8) == "789")

-- testing string.find

assert(string.find("123456789", "345") == 3)

a,b = string.find("123456789", "345")

assert(string.sub("123456789", a, b) == "345")

assert(string.find("1234567890123456789", "345", 3) == 3)

assert(string.find("1234567890123456789", "345", 4) == 13)

assert(not string.find("1234567890123456789", "346", 4))

assert(string.find("1234567890123456789", ".45", -9) == 13)

assert(not string.find("abcdefg", "\0", 5, 1))

assert(string.find("", "") == 1)

assert(string.find("", "", 1) == 1)

assert(not string.find("", "", 2))

assert(not string.find('', 'aaa', 1))

assert(('alo(.)alo'):find('(.)', 1, 1) == 4)

assert(string.len("") == 0)

assert(string.len("\0\0\0") == 3)

assert(string.len("1234567890") == 10)

assert(#"" == 0)

assert(#"\0\0\0" == 3)

assert(#"1234567890" == 10)

-- testing string.byte/string.char

assert(string.byte("a") == 97)

assert(string.byte("\xe4") > 127)

assert(string.byte(string.char(255)) == 255)

assert(string.byte(string.char(0)) == 0)

assert(string.byte("\0") == 0)

assert(string.byte("\0\0alo\0x", -1) == string.byte('x'))

assert(string.byte("ba", 2) == 97)

assert(string.byte("\n\n", 2, -1) == 10)

assert(string.byte("\n\n", 2, 2) == 10)

assert(string.byte("") == nil)

assert(string.byte("hi", -3) == nil)

assert(string.byte("hi", 3) == nil)

assert(string.byte("hi", 9, 10) == nil)

assert(string.byte("hi", 2, 1) == nil)

assert(string.char() == "")

assert(string.char(0, 255, 0) == "\0\255\0")

assert(string.char(0, string.byte("\xe4"), 0) == "\0\xe4\0")

assert(string.char(string.byte("\xe4l\0óu", 1, -1)) == "\xe4l\0óu")

assert(string.char(string.byte("\xe4l\0óu", 1, 0)) == "")

assert(string.char(string.byte("\xe4l\0óu", -10, 100)) == "\xe4l\0óu")

checkerror("out of range", string.char, 256)

checkerror("out of range", string.char, -1)

checkerror("out of range", string.char, math.maxinteger)

checkerror("out of range", string.char, math.mininteger)

assert(string.upper("ab\0c") == "AB\0C")

assert(string.lower("\0ABCc%$") == "\0abcc%$")

assert(string.rep('teste', 0) == '')

assert(string.rep('tés\00tê', 2) == 'tés\0têtés\000tê')

assert(string.rep('', 10) == '')

if string.packsize("i") == 4 then

-- result length would be 2^31 (int overflow)

checkerror("too large", string.rep, 'aa', (1 << 30))

checkerror("too large", string.rep, 'a', (1 << 30), ',')

end

-- repetitions with separator

assert(string.rep('teste', 0, 'xuxu') == '')

assert(string.rep('teste', 1, 'xuxu') == 'teste')

assert(string.rep('\1\0\1', 2, '\0\0') == '\1\0\1\0\0\1\0\1')

assert(string.rep('', 10, '.') == string.rep('.', 9))

assert(not pcall(string.rep, "aa", maxi // 2 + 10))

assert(not pcall(string.rep, "", maxi // 2 + 10, "aa"))

assert(string.reverse"" == "")

assert(string.reverse"\0\1\2\3" == "\3\2\1\0")

assert(string.reverse"\0001234" == "4321\0")

for i=0,30 do assert(string.len(string.rep('a', i)) == i) end

assert(type(tostring(nil)) == 'string')

assert(type(tostring(12)) == 'string')

assert(string.find(tostring{}, 'table:'))

assert(string.find(tostring(print), 'function:'))

assert(#tostring('\0') == 1)

assert(tostring(true) == "true")

assert(tostring(false) == "false")

assert(tostring(-1203) == "-1203")

assert(tostring(1203.125) == "1203.125")

assert(tostring(-0.5) == "-0.5")

assert(tostring(-32767) == "-32767")

if math.tointeger(2147483647) then -- no overflow? (32 bits)

assert(tostring(-2147483647) == "-2147483647")

end

if math.tointeger(4611686018427387904) then -- no overflow? (64 bits)

assert(tostring(4611686018427387904) == "4611686018427387904")

assert(tostring(-4611686018427387904) == "-4611686018427387904")

end

if tostring(0.0) == "0.0" then -- "standard" coercion float->string

assert('' .. 12 == '12' and 12.0 .. '' == '12.0')

assert(tostring(-1203 + 0.0) == "-1203.0")

else -- compatible coercion

assert(tostring(0.0) == "0")

assert('' .. 12 == '12' and 12.0 .. '' == '12')

assert(tostring(-1203 + 0.0) == "-1203")

end

do -- tests for '%p' format

-- not much to test, as C does not specify what '%p' does.

-- ("The value of the pointer is converted to a sequence of printing

-- characters, in an implementation-defined manner.")

local null = string.format("%p", nil)

assert(string.format("%p", {}) ~= null)

assert(string.format("%p", 4) == null)

assert(string.format("%p", true) == null)

assert(string.format("%p", print) ~= null)

assert(string.format("%p", coroutine.running()) ~= null)

assert(string.format("%p", io.stdin) ~= null)

assert(string.format("%p", io.stdin) == string.format("%p", io.stdin))

do

local t1 = {}; local t2 = {}

assert(string.format("%p", t1) ~= string.format("%p", t2))

end

do -- short strings are internalized

local s1 = string.rep("a", 10)

local s2 = string.rep("a", 10)

assert(string.format("%p", s1) == string.format("%p", s2))

end

do -- long strings aren't internalized

local s1 = string.rep("a", 300); local s2 = string.rep("a", 300)

assert(string.format("%p", s1) ~= string.format("%p", s2))

end

assert(#string.format("%90p", {}) == 90)

end

x = '"ílo"\n\\'

assert(string.format('%q%s', x, x) == '"\\"ílo\\"\\\n\\\\""ílo"\n\\')

assert(string.format('%q', "\0") == [["\0"]])

assert(load(string.format('return %q', x))() == x)

x = "\0\1\0023\5\0009"

assert(load(string.format('return %q', x))() == x)

assert(string.format("\0%c\0%c%x\0", string.byte("\xe4"), string.byte("b"), 140) ==

"\0\xe4\0b8c\0")

assert(string.format('') == "")

assert(string.format("%c",34)..string.format("%c",48)..string.format("%c",90)..string.format("%c",100) ==

string.format("%c%c%c%c", 34, 48, 90, 100))

assert(string.format("%s\0 is not \0%s", 'not be', 'be') == 'not be\0 is not \0be')

assert(string.format("%%%d %010d", 10, 23) == "%10 0000000023")

assert(tonumber(string.format("%f", 10.3)) == 10.3)

x = string.format('"%-50s"', 'a')

assert(#x == 52)

assert(string.sub(x, 1, 4) == '"a ')

assert(string.format("-%.20s.20s", string.rep("%", 2000)) ==

"-"..string.rep("%", 20)..".20s")

assert(string.format('"-%20s.20s"', string.rep("%", 2000)) ==

string.format("%q", "-"..string.rep("%", 2000)..".20s"))

do

local function checkQ (v)

local s = string.format("%q", v)

local nv = load("return " .. s)()

assert(v == nv and math.type(v) == math.type(nv))

end

checkQ("\0\0\1\255\u{234}")

checkQ(math.maxinteger)

checkQ(math.mininteger)

checkQ(math.pi)

checkQ(0.1)

checkQ(true)

checkQ(nil)

checkQ(false)

checkQ(math.huge)

checkQ(-math.huge)

assert(string.format("%q", 0/0) == "(0/0)") -- NaN

checkerror("no literal", string.format, "%q", {})

end

assert(string.format("\0%s\0", "\0\0\1") == "\0\0\0\1\0")

checkerror("contains zeros", string.format, "%10s", "\0")

checkerror("cannot have modifiers", string.format, "%10q", "1")

-- format x tostring

assert(string.format("%s %s", nil, true) == "nil true")

assert(string.format("%s %.4s", false, true) == "false true")

assert(string.format("%.3s %.3s", false, true) == "fal tru")

local m = setmetatable({}, {__tostring = function () return "hello" end,

__name = "hi"})

assert(string.format("%s %.10s", m, m) == "hello hello")

getmetatable(m).__tostring = nil -- will use '__name' from now on

assert(string.format("%.4s", m) == "hi: ")

getmetatable(m).__tostring = function () return {} end

checkerror("'__tostring' must return a string", tostring, m)

assert(string.format("%x", 0.0) == "0")

assert(string.format("%02x", 0.0) == "00")

assert(string.format("%08X", 0xFFFFFFFF) == "FFFFFFFF")

assert(string.format("%+08d", 31501) == "+0031501")

assert(string.format("%+08d", -30927) == "-0030927")

do -- longest number that can be formatted

local i = 1

local j = 10000

while i + 1 < j do -- binary search for maximum finite float

local m = (i + j) // 2

if 10^m < math.huge then i = m else j = m end

end

assert(10^i < math.huge and 10^j == math.huge)

local s = string.format('%.99f', -(10^i))

assert(string.len(s) >= i + 101)

assert(tonumber(s) == -(10^i))

-- limit for floats

assert(10^38 < math.huge)

local s = string.format('%.99f', -(10^38))

assert(string.len(s) >= 38 + 101)

assert(tonumber(s) == -(10^38))

end

-- testing large numbers for format

do -- assume at least 32 bits

local max, min = 0x7fffffff, -0x80000000 -- "large" for 32 bits

assert(string.sub(string.format("%8x", -1), -8) == "ffffffff")

assert(string.format("%x", max) == "7fffffff")

assert(string.sub(string.format("%x", min), -8) == "80000000")

assert(string.format("%d", max) == "2147483647")

assert(string.format("%d", min) == "-2147483648")

assert(string.format("%u", 0xffffffff) == "4294967295")

assert(string.format("%o", 0xABCD) == "125715")

max, min = 0x7fffffffffffffff, -0x8000000000000000

if max > 2.0^53 then -- only for 64 bits

assert(string.format("%x", (2^52 | 0) - 1) == "fffffffffffff")

assert(string.format("0x%8X", 0x8f000003) == "0x8F000003")

assert(string.format("%d", 2^53) == "9007199254740992")

assert(string.format("%i", -2^53) == "-9007199254740992")

assert(string.format("%x", max) == "7fffffffffffffff")

assert(string.format("%x", min) == "8000000000000000")

assert(string.format("%d", max) == "9223372036854775807")

assert(string.format("%d", min) == "-9223372036854775808")

assert(string.format("%u", ~(-1 << 64)) == "18446744073709551615")

assert(tostring(1234567890123) == '1234567890123')

end

end

do print("testing 'format %a %A'")

local function matchhexa (n)

local s = string.format("%a", n)

-- result matches ISO C requirements

assert(string.find(s, "^%-?0x[1-9a-f]%.?[0-9a-f]*p[-+]?%d+$"))

assert(tonumber(s) == n) -- and has full precision

s = string.format("%A", n)

assert(string.find(s, "^%-?0X[1-9A-F]%.?[0-9A-F]*P[-+]?%d+$"))

assert(tonumber(s) == n)

end

for _, n in ipairs{0.1, -0.1, 1/3, -1/3, 1e30, -1e30,

-45/247, 1, -1, 2, -2, 3e-20, -3e-20} do

matchhexa(n)

end

assert(string.find(string.format("%A", 0.0), "^0X0%.?0*P%+?0$"))

assert(string.find(string.format("%a", -0.0), "^%-0x0%.?0*p%+?0$"))

if not _port then -- test inf, -inf, NaN, and -0.0

assert(string.find(string.format("%a", 1/0), "^inf"))

assert(string.find(string.format("%A", -1/0), "^%-INF"))

assert(string.find(string.format("%a", 0/0), "^%-?nan"))

assert(string.find(string.format("%a", -0.0), "^%-0x0"))

end

if not pcall(string.format, "%.3a", 0) then

(Message or print)("\n >>> modifiers for format '%a' not available <<<\n")

else

assert(string.find(string.format("%+.2A", 12), "^%+0X%x%.%x0P%+?%d$"))

assert(string.find(string.format("%.4A", -12), "^%-0X%x%.%x000P%+?%d$"))

end

end

-- errors in format

local function check (fmt, msg)

checkerror(msg, string.format, fmt, 10)

end

local aux = string.rep('0', 600)

check("%100.3d", "too long")

check("%1"..aux..".3d", "too long")

check("%1.100d", "too long")

check("%10.1"..aux.."004d", "too long")

check("%t", "invalid conversion")

check("%"..aux.."d", "repeated flags")

check("%d %d", "no value")

assert(load("return 1\n--comment without ending EOL")() == 1)

checkerror("table expected", table.concat, 3)

assert(table.concat{} == "")

assert(table.concat({}, 'x') == "")

assert(table.concat({'\0', '\0\1', '\0\1\2'}, '.\0.') == "\0.\0.\0\1.\0.\0\1\2")

local a = {}; for i=1,300 do a[i] = "xuxu" end

assert(table.concat(a, "123").."123" == string.rep("xuxu123", 300))

assert(table.concat(a, "b", 20, 20) == "xuxu")

assert(table.concat(a, "", 20, 21) == "xuxuxuxu")

assert(table.concat(a, "x", 22, 21) == "")

assert(table.concat(a, "3", 299) == "xuxu3xuxu")

assert(table.concat({}, "x", maxi, maxi - 1) == "")

assert(table.concat({}, "x", mini + 1, mini) == "")

assert(table.concat({}, "x", maxi, mini) == "")

assert(table.concat({[maxi] = "alo"}, "x", maxi, maxi) == "alo")

assert(table.concat({[maxi] = "alo", [maxi - 1] = "y"}, "-", maxi - 1, maxi)

== "y-alo")

assert(not pcall(table.concat, {"a", "b", {}}))

a = {"a","b","c"}

assert(table.concat(a, ",", 1, 0) == "")

assert(table.concat(a, ",", 1, 1) == "a")

assert(table.concat(a, ",", 1, 2) == "a,b")

assert(table.concat(a, ",", 2) == "b,c")

assert(table.concat(a, ",", 3) == "c")

assert(table.concat(a, ",", 4) == "")

if not _port then

local locales = { "ptb", "pt_BR.iso88591", "ISO-8859-1" }

local function trylocale (w)

for i = 1, #locales do

if os.setlocale(locales[i], w) then

print(string.format("'%s' locale set to '%s'", w, locales[i]))

return locales[i]

end

end

print(string.format("'%s' locale not found", w))

return false

end

if trylocale("collate") then

assert("alo" < "álo" and "álo" < "amo")

end

if trylocale("ctype") then

assert(string.gsub("áéíóú", "%a", "x") == "xxxxx")

assert(string.gsub("áÁéÉ", "%l", "x") == "xÁxÉ")

assert(string.gsub("áÁéÉ", "%u", "x") == "áxéx")

assert(string.upper"áÁé{xuxu}ção" == "ÁÁÉ{XUXU}ÇÃO")

end

os.setlocale("C")

assert(os.setlocale() == 'C')

assert(os.setlocale(nil, "numeric") == 'C')

end

-- bug in Lua 5.3.2

-- 'gmatch' iterator does not work across coroutines

do

local f = string.gmatch("1 2 3 4 5", "%d+")

assert(f() == "1")

co = coroutine.wrap(f)

assert(co() == "2")

end

if T==nil then

(Message or print)

("\n >>> testC not active: skipping 'pushfstring' tests <<<\n")

else

print"testing 'pushfstring'"

-- formats %U, %f, %I already tested elsewhere

local blen = 400 -- internal buffer length in 'luaO_pushfstring'

local function callpfs (op, fmt, n)

local x = {T.testC("pushfstring" .. op .. "; return *", fmt, n)}

-- stack has code, 'fmt', 'n', and result from operation

assert(#x == 4) -- make sure nothing else was left in the stack

return x[4]

end

local function testpfs (op, fmt, n)

assert(callpfs(op, fmt, n) == string.format(fmt, n))

end

testpfs("I", "", 0)

testpfs("I", string.rep("a", blen - 1), 0)

testpfs("I", string.rep("a", blen), 0)

testpfs("I", string.rep("a", blen + 1), 0)

local str = string.rep("ab", blen) .. "%d" .. string.rep("d", blen / 2)

testpfs("I", str, 2^14)

testpfs("I", str, -2^15)

str = "%d" .. string.rep("cd", blen)

testpfs("I", str, 2^14)

testpfs("I", str, -2^15)

str = string.rep("c", blen - 2) .. "%d"

testpfs("I", str, 2^14)

testpfs("I", str, -2^15)

for l = 12, 14 do

local str1 = string.rep("a", l)

for i = 0, 500, 13 do

for j = 0, 500, 13 do

str = string.rep("a", i) .. "%s" .. string.rep("d", j)

testpfs("S", str, str1)

testpfs("S", str, str)

end

end

end

str = "abc %c def"

testpfs("I", str, string.byte("A"))

testpfs("I", str, 255)

str = string.rep("a", blen - 1) .. "%p" .. string.rep("cd", blen)

testpfs("P", str, {})

str = string.rep("%%", 3 * blen) .. "%p" .. string.rep("%%", 2 * blen)

testpfs("P", str, {})

end

print('OK')