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Diffstat (limited to 'winsup/bz2lib/manual.ps')
| -rw-r--r-- | winsup/bz2lib/manual.ps | 3808 |
1 files changed, 0 insertions, 3808 deletions
diff --git a/winsup/bz2lib/manual.ps b/winsup/bz2lib/manual.ps deleted file mode 100644 index 1a7dbac85..000000000 --- a/winsup/bz2lib/manual.ps +++ /dev/null @@ -1,3808 +0,0 @@ -%!PS-Adobe-2.0 -%%Creator: dvips(k) 5.78 Copyright 1998 Radical Eye Software (www.radicaleye.com) -%%Title: manual.dvi -%%Pages: 39 -%%PageOrder: Ascend -%%BoundingBox: 0 0 596 842 -%%EndComments -%DVIPSCommandLine: dvips -o manual.ps manual.dvi -%DVIPSParameters: dpi=600, compressed -%DVIPSSource: TeX output 2000.03.23:2343 -%%BeginProcSet: texc.pro -%! -/TeXDict 300 dict def TeXDict begin /N{def}def /B{bind def}N /S{exch}N -/X{S N}B /TR{translate}N /isls false N /vsize 11 72 mul N /hsize 8.5 72 -mul N /landplus90{false}def /@rigin{isls{[0 landplus90{1 -1}{-1 1} -ifelse 0 0 0]concat}if 72 Resolution div 72 VResolution div neg scale -isls{landplus90{VResolution 72 div vsize mul 0 exch}{Resolution -72 div -hsize mul 0}ifelse TR}if Resolution VResolution vsize -72 div 1 add mul -TR[matrix currentmatrix{dup dup 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y(more)f(con)m(v)m(en)m(tional)g(LZ77/LZ78-based)g -(compressors,)g(and)f(approac)m(hes)h(the)f(p)s(erformance)g(of)h(the) -150 884 y(PPM)c(family)f(of)i(statistical)f(compressors.)150 -1041 y Fj(bzip2)k Fl(is)h(built)e(on)i(top)h(of)g Fj(libbzip2)p -Fl(,)e(a)i(\015exible)e(library)f(for)i(handling)e(compressed)i(data)i -(in)d(the)150 1151 y Fj(bzip2)c Fl(format.)43 b(This)30 -b(man)m(ual)g(describ)s(es)g(b)s(oth)g(ho)m(w)i(to)g(use)f(the)g -(program)g(and)g(ho)m(w)g(to)h(w)m(ork)f(with)150 1260 -y(the)d(library)d(in)m(terface.)41 b(Most)28 b(of)g(the)g(man)m(ual)f -(is)g(dev)m(oted)i(to)f(this)f(library)-8 b(,)26 b(not)i(the)g -(program,)g(whic)m(h)150 1370 y(is)h(go)s(o)s(d)i(news)e(if)h(y)m(our)g -(in)m(terest)h(is)e(only)g(in)h(the)g(program.)150 1527 -y(Chapter)24 b(2)g(describ)s(es)f(ho)m(w)h(to)h(use)f -Fj(bzip2)p Fl(;)h(this)e(is)g(the)i(only)e(part)h(y)m(ou)h(need)f(to)h -(read)f(if)f(y)m(ou)h(just)g(w)m(an)m(t)150 1636 y(to)35 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b(])570 1837 y Fj(bunzip2)28 b -Fl([)j(-fkvsVL)f(])h([)f(\014lenames)g(...)41 b(])570 -1968 y Fj(bzcat)29 b Fl([)h(-s)h(])g([)f(\014lenames)g(...)41 -b(])570 2100 y Fj(bzip2recover)27 b Fl(\014lename)390 -2352 y Ff(DESCRIPTION)390 2538 y Fj(bzip2)i Fl(compresses)i(\014les)f -(using)f(the)i(Burro)m(ws-Wheeler)g(blo)s(c)m(k)f(sorting)g(text)i -(compres-)390 2642 y(sion)40 b(algorithm,)j(and)d(Hu\013man)h(co)s -(ding.)71 b(Compression)40 b(is)g(generally)g(considerably)390 -2746 y(b)s(etter)25 b(than)g(that)h(ac)m(hiev)m(ed)g(b)m(y)f(more)g -(con)m(v)m(en)m(tional)h(LZ77/LZ78-based)g(compressors,)390 -2850 y(and)k(approac)m(hes)h(the)f(p)s(erformance)g(of)h(the)f(PPM)g -(family)f(of)i(statistical)f(compressors.)390 3001 y(The)e -(command-line)e(options)i(are)h(delib)s(erately)d(v)m(ery)i(similar)e -(to)j(those)g(of)f(GNU)h Fj(gzip)p Fl(,)390 3104 y(but)h(they)g(are)h -(not)g(iden)m(tical.)390 3255 y Fj(bzip2)f Fl(exp)s(ects)h(a)g(list)f 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Fl(and)h Fj(bunzip2)e Fl(will)f(b)m(y)k(default)e(not)i(o)m(v)m -(erwrite)g(existing)e(\014les.)38 b(If)27 b(y)m(ou)h(w)m(an)m(t)g(this) -390 4237 y(to)j(happ)s(en,)e(sp)s(ecify)g(the)i Fj(-f)e -Fl(\015ag.)390 4388 y(If)34 b(no)h(\014le)f(names)g(are)i(sp)s -(eci\014ed,)e Fj(bzip2)f Fl(compresses)i(from)f(standard)g(input)f(to)j -(stan-)390 4491 y(dard)c(output.)49 b(In)32 b(this)g(case,)k -Fj(bzip2)31 b Fl(will)g(decline)h(to)i(write)e(compressed)h(output)g -(to)h(a)390 4595 y(terminal,)29 b(as)i(this)e(w)m(ould)g(b)s(e)h(en)m -(tirely)f(incomprehensible)e(and)j(therefore)h(p)s(oin)m(tless.)390 -4746 y Fj(bunzip2)36 b Fl(\(or)j Fj(bzip2)29 b(-d)p Fl(\))37 -b(decompresses)i(all)e(sp)s(eci\014ed)f(\014les.)63 b(Files)37 -b(whic)m(h)g(w)m(ere)i(not)390 4850 y(created)e(b)m(y)f -Fj(bzip2)f Fl(will)e(b)s(e)i(detected)j(and)d(ignored,)i(and)e(a)i(w)m -(arning)d(issued.)56 b Fj(bzip2)390 4954 y Fl(attempts)31 -b(to)f(guess)g(the)g(\014lename)f(for)h(the)g(decompressed)f(\014le)g 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y(in)m(ternal)d(consistency)h(error)g(\(eg,)i(bug\))e(whic)m(h)f -(caused)i Fj(bzip2)e Fl(to)i(panic.)390 5304 y Ff(OPTIONS)p -eop -%%Page: 5 6 -5 5 bop 150 -116 a Fl(Chapter)30 b(2:)41 b(Ho)m(w)31 -b(to)g(use)f Fj(bzip2)2375 b Fl(5)390 299 y Fj(-c)30 -b(--stdout)870 403 y Fl(Compress)f(or)i(decompress)f(to)h(standard)e -(output.)390 557 y Fj(-d)h(--decompress)870 661 y Fl(F)-8 -b(orce)44 b(decompression.)77 b Fj(bzip2)p Fl(,)44 b -Fj(bunzip2)d Fl(and)h Fj(bzcat)f Fl(are)i(really)f(the)870 -764 y(same)27 b(program,)h(and)e(the)i(decision)d(ab)s(out)i(what)g -(actions)g(to)h(tak)m(e)g(is)e(done)870 868 y(on)k(the)h(basis)e(of)i -(whic)m(h)e(name)h(is)g(used.)40 b(This)28 b(\015ag)j(o)m(v)m(errides)f -(that)h(mec)m(h-)870 972 y(anism,)e(and)h(forces)h(bzip2)e(to)i -(decompress.)390 1126 y Fj(-z)f(--compress)870 1230 y -Fl(The)39 b(complemen)m(t)h(to)g Fj(-d)p Fl(:)59 b(forces)40 -b(compression,)h(regardless)d(of)i(the)g(in-)870 1334 -y(v)m(ok)-5 b(ation)31 b(name.)390 1488 y Fj(-t)f(--test)8 -b Fl(Chec)m(k)33 b(in)m(tegrit)m(y)j(of)f(the)g(sp)s(eci\014ed)e -(\014le\(s\),)k(but)d(don't)h(decompress)g(them.)870 -1591 y(This)40 b(really)g(p)s(erforms)g(a)i(trial)e(decompression)h -(and)g(thro)m(ws)g(a)m(w)m(a)m(y)j(the)870 1695 y(result.)390 -1849 y Fj(-f)30 b(--force)870 1953 y Fl(F)-8 b(orce)31 -b(o)m(v)m(erwrite)f(of)g(output)f(\014les.)40 b(Normally)-8 -b(,)29 b Fj(bzip2)f Fl(will)f(not)j(o)m(v)m(erwrite)870 -2057 y(existing)e(output)g(\014les.)39 b(Also)28 b(forces)h -Fj(bzip2)e Fl(to)i(break)g(hard)e(links)f(to)k(\014les,)870 -2161 y(whic)m(h)f(it)h(otherwise)g(w)m(ouldn't)f(do.)390 -2315 y Fj(-k)h(--keep)8 b Fl(Keep)24 b(\(don't)i(delete\))h(input)d -(\014les)g(during)g(compression)h(or)h(decompression.)390 -2469 y Fj(-s)k(--small)870 2573 y Fl(Reduce)23 b(memory)f(usage,)j(for) -d(compression,)h(decompression)f(and)g(testing.)870 2676 -y(Files)f(are)i(decompressed)e(and)h(tested)h(using)e(a)h(mo)s -(di\014ed)e(algorithm)h(whic)m(h)870 2780 y(only)30 b(requires)g(2.5)j -(b)m(ytes)f(p)s(er)e(blo)s(c)m(k)h(b)m(yte.)44 b(This)30 -b(means)h(an)m(y)h(\014le)e(can)i(b)s(e)870 2884 y(decompressed)d(in)f -(2300k)j(of)e(memory)-8 b(,)30 b(alb)s(eit)e(at)i(ab)s(out)f(half)g -(the)g(normal)870 2988 y(sp)s(eed.)870 3117 y(During)42 -b(compression,)k Fj(-s)d Fl(selects)h(a)g(blo)s(c)m(k)g(size)f(of)h -(200k,)k(whic)m(h)42 b(lim-)870 3220 y(its)33 b(memory)g(use)g(to)h -(around)e(the)i(same)f(\014gure,)h(at)g(the)g(exp)s(ense)f(of)g(y)m -(our)870 3324 y(compression)g(ratio.)50 b(In)33 b(short,)i(if)d(y)m -(our)i(mac)m(hine)f(is)g(lo)m(w)g(on)h(memory)f(\(8)870 -3428 y(megab)m(ytes)42 b(or)e(less\),)j(use)d(-s)g(for)g(ev)m -(erything.)71 b(See)40 b(MEMOR)-8 b(Y)41 b(MAN-)870 3532 -y(A)m(GEMENT)31 b(b)s(elo)m(w.)390 3686 y Fj(-q)f(--quiet)870 -3790 y Fl(Suppress)j(non-essen)m(tial)j(w)m(arning)e(messages.)58 -b(Messages)38 b(p)s(ertaining)33 b(to)870 3893 y(I/O)d(errors)g(and)g -(other)h(critical)e(ev)m(en)m(ts)j(will)27 b(not)k(b)s(e)f(suppressed.) -390 4047 y Fj(-v)g(--verbose)870 4151 y Fl(V)-8 b(erb)s(ose)28 -b(mo)s(de)f({)i(sho)m(w)e(the)h(compression)f(ratio)h(for)f(eac)m(h)i -(\014le)e(pro)s(cessed.)870 4255 y(F)-8 b(urther)30 b -Fj(-v)p Fl('s)g(increase)g(the)g(v)m(erb)s(osit)m(y)g(lev)m(el,)h(sp)s -(ewing)d(out)j(lots)f(of)g(infor-)870 4359 y(mation)g(whic)m(h)f(is)h -(primarily)d(of)j(in)m(terest)h(for)f(diagnostic)g(purp)s(oses.)390 -4513 y Fj(-L)g(--license)e(-V)h(--version)870 4617 y -Fl(Displa)m(y)h(the)g(soft)m(w)m(are)i(v)m(ersion,)e(license)f(terms)i -(and)e(conditions.)390 4771 y Fj(-1)h(to)g(-9)72 b Fl(Set)35 -b(the)g(blo)s(c)m(k)f(size)h(to)g(100)h(k,)g(200)g(k)f(..)53 -b(900)36 b(k)f(when)f(compressing.)53 b(Has)870 4875 -y(no)41 b(e\013ect)h(when)d(decompressing.)71 b(See)41 -b(MEMOR)-8 b(Y)41 b(MANA)m(GEMENT)870 4978 y(b)s(elo)m(w.)390 -5132 y Fj(--)324 b Fl(T)-8 b(reats)25 b(all)e(subsequen)m(t)g(argumen)m -(ts)i(as)f(\014le)g(names,)h(ev)m(en)g(if)e(they)i(start)f(with)870 -5236 y(a)32 b(dash.)43 b(This)29 b(is)h(so)i(y)m(ou)g(can)f(handle)f -(\014les)g(with)g(names)i(b)s(eginning)c(with)870 5340 -y(a)j(dash,)f(for)g(example:)40 b Fj(bzip2)29 b(--)h(-myfilename)p -Fl(.)p eop -%%Page: 6 7 -6 6 bop 150 -116 a Fl(Chapter)30 b(2:)41 b(Ho)m(w)31 -b(to)g(use)f Fj(bzip2)2375 b Fl(6)390 299 y Fj(--repetitive-fast)390 -427 y(--repetitive-best)870 530 y Fl(These)34 b(\015ags)g(are)h -(redundan)m(t)e(in)g(v)m(ersions)g(0.9.5)j(and)e(ab)s(o)m(v)m(e.)53 -b(They)34 b(pro-)870 634 y(vided)h(some)i(coarse)g(con)m(trol)g(o)m(v)m -(er)g(the)g(b)s(eha)m(viour)e(of)h(the)g(sorting)g(algo-)870 -738 y(rithm)h(in)h(earlier)g(v)m(ersions,)j(whic)m(h)d(w)m(as)h -(sometimes)h(useful.)65 b(0.9.5)41 b(and)870 842 y(ab)s(o)m(v)m(e)34 -b(ha)m(v)m(e)g(an)f(impro)m(v)m(ed)g(algorithm)f(whic)m(h)f(renders)h -(these)h(\015ags)h(irrel-)870 946 y(ev)-5 b(an)m(t.)390 -1190 y Ff(MEMOR)-10 b(Y)40 b(MANA)m(GEMENT)390 1377 y -Fj(bzip2)25 b Fl(compresses)i(large)g(\014les)e(in)g(blo)s(c)m(ks.)39 -b(The)26 b(blo)s(c)m(k)h(size)f(a\013ects)i(b)s(oth)e(the)h(compres-) -390 1481 y(sion)39 b(ratio)g(ac)m(hiev)m(ed,)k(and)d(the)f(amoun)m(t)i -(of)e(memory)h(needed)f(for)h(compression)f(and)390 1585 -y(decompression.)59 b(The)36 b(\015ags)h Fj(-1)f Fl(through)h -Fj(-9)f Fl(sp)s(ecify)f(the)i(blo)s(c)m(k)g(size)f(to)i(b)s(e)e -(100,000)390 1688 y(b)m(ytes)29 b(through)e(900,000)k(b)m(ytes)d(\(the) -h(default\))e(resp)s(ectiv)m(ely)-8 b(.)40 b(A)m(t)29 -b(decompression)e(time,)390 1792 y(the)32 b(blo)s(c)m(k)g(size)g(used)g -(for)g(compression)f(is)g(read)h(from)g(the)g(header)g(of)h(the)f -(compressed)390 1896 y(\014le,)j(and)f Fj(bunzip2)e Fl(then)i(allo)s -(cates)h(itself)e(just)h(enough)g(memory)g(to)i(decompress)e(the)390 -2000 y(\014le.)39 b(Since)29 b(blo)s(c)m(k)g(sizes)g(are)h(stored)f(in) -f(compressed)h(\014les,)g(it)g(follo)m(ws)f(that)i(the)g(\015ags)g -Fj(-1)390 2103 y Fl(to)h Fj(-9)f Fl(are)h(irrelev)-5 -b(an)m(t)29 b(to)i(and)f(so)h(ignored)e(during)f(decompression.)390 -2255 y(Compression)h(and)g(decompression)h(requiremen)m(ts,)f(in)g(b)m -(ytes,)j(can)e(b)s(e)g(estimated)h(as:)869 2406 y Fj(Compression:)140 -b(400k)46 b(+)i(\()f(8)h(x)f(block)f(size)h(\))869 2613 -y(Decompression:)d(100k)i(+)i(\()f(4)h(x)f(block)f(size)h(\),)g(or)1585 -2717 y(100k)f(+)i(\()f(2.5)g(x)g(block)g(size)f(\))390 -2868 y Fl(Larger)29 b(blo)s(c)m(k)f(sizes)h(giv)m(e)g(rapidly)d -(diminishing)e(marginal)k(returns.)39 b(Most)29 b(of)g(the)g(com-)390 -2972 y(pression)d(comes)j(from)f(the)g(\014rst)g(t)m(w)m(o)h(or)f -(three)h(h)m(undred)d(k)i(of)g(blo)s(c)m(k)g(size,)g(a)h(fact)g(w)m -(orth)390 3075 y(b)s(earing)j(in)f(mind)g(when)h(using)f -Fj(bzip2)h Fl(on)g(small)g(mac)m(hines.)47 b(It)33 b(is)f(also)h(imp)s -(ortan)m(t)f(to)390 3179 y(appreciate)j(that)h(the)f(decompression)f -(memory)h(requiremen)m(t)f(is)h(set)g(at)h(compression)390 -3283 y(time)30 b(b)m(y)g(the)h(c)m(hoice)g(of)g(blo)s(c)m(k)f(size.)390 -3434 y(F)-8 b(or)45 b(\014les)f(compressed)g(with)g(the)g(default)g -(900k)i(blo)s(c)m(k)e(size,)49 b Fj(bunzip2)42 b Fl(will)g(require)390 -3538 y(ab)s(out)29 b(3700)j(kb)m(ytes)e(to)h(decompress.)40 -b(T)-8 b(o)30 b(supp)s(ort)e(decompression)h(of)h(an)m(y)g(\014le)f(on) -g(a)i(4)390 3642 y(megab)m(yte)h(mac)m(hine,)d Fj(bunzip2)f -Fl(has)i(an)g(option)f(to)i(decompress)e(using)g(appro)m(ximately)390 -3745 y(half)k(this)g(amoun)m(t)i(of)f(memory)-8 b(,)36 -b(ab)s(out)e(2300)i(kb)m(ytes.)53 b(Decompression)34 -b(sp)s(eed)g(is)f(also)390 3849 y(halv)m(ed,)i(so)f(y)m(ou)h(should)d -(use)h(this)g(option)h(only)f(where)h(necessary)-8 b(.)53 -b(The)33 b(relev)-5 b(an)m(t)35 b(\015ag)390 3953 y(is)29 -b Fj(-s)p Fl(.)390 4104 y(In)34 b(general,)i(try)f(and)f(use)g(the)h -(largest)h(blo)s(c)m(k)e(size)h(memory)f(constrain)m(ts)h(allo)m(w,)h -(since)390 4208 y(that)45 b(maximises)f(the)h(compression)f(ac)m(hiev)m -(ed.)85 b(Compression)43 b(and)h(decompression)390 4311 -y(sp)s(eed)30 b(are)g(virtually)e(una\013ected)j(b)m(y)f(blo)s(c)m(k)g -(size.)390 4463 y(Another)25 b(signi\014can)m(t)f(p)s(oin)m(t)g -(applies)f(to)j(\014les)e(whic)m(h)g(\014t)h(in)e(a)j(single)d(blo)s(c) -m(k)i({)g(that)h(means)390 4566 y(most)g(\014les)g(y)m(ou'd)g(encoun)m -(ter)h(using)d(a)j(large)f(blo)s(c)m(k)g(size.)39 b(The)25 -b(amoun)m(t)i(of)f(real)g(memory)390 4670 y(touc)m(hed)38 -b(is)e(prop)s(ortional)f(to)j(the)f(size)g(of)h(the)f(\014le,)h(since)f -(the)g(\014le)g(is)f(smaller)g(than)h(a)390 4774 y(blo)s(c)m(k.)49 -b(F)-8 b(or)35 b(example,)f(compressing)e(a)i(\014le)e(20,000)k(b)m -(ytes)e(long)f(with)f(the)i(\015ag)g Fj(-9)f Fl(will)390 -4878 y(cause)28 b(the)f(compressor)g(to)h(allo)s(cate)f(around)f(7600k) -j(of)e(memory)-8 b(,)28 b(but)f(only)f(touc)m(h)i(400k)390 -4981 y Fj(+)h Fl(20000)j(*)e(8)g(=)f(560)i(kb)m(ytes)f(of)g(it.)40 -b(Similarly)-8 b(,)26 b(the)k(decompressor)f(will)e(allo)s(cate)j -(3700k)390 5085 y(but)g(only)f(touc)m(h)i(100k)h Fj(+)e 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b(Size)821 -1073 y(-1)286 b(1200k)332 b(500k)429 b(350k)285 b(914704)821 -1176 y(-2)h(2000k)332 b(900k)429 b(600k)285 b(877703)821 -1280 y(-3)h(2800k)f(1300k)428 b(850k)285 b(860338)821 -1384 y(-4)h(3600k)f(1700k)380 b(1100k)285 b(846899)821 -1488 y(-5)h(4400k)f(2100k)380 b(1350k)285 b(845160)821 -1591 y(-6)h(5200k)f(2500k)380 b(1600k)285 b(838626)821 -1695 y(-7)h(6100k)f(2900k)380 b(1850k)285 b(834096)821 -1799 y(-8)h(6800k)f(3300k)380 b(2100k)285 b(828642)821 -1903 y(-9)h(7600k)f(3700k)380 b(2350k)285 b(828642)390 -2147 y Ff(RECO)m(VERING)37 b(D)m(A)-10 b(T)g(A)40 b(FR)m(OM)h(D)m(AMA)m -(GED)e(FILES)390 2333 y Fj(bzip2)25 b Fl(compresses)h(\014les)g(in)f -(blo)s(c)m(ks,)h(usually)e(900kb)m(ytes)29 b(long.)39 -b(Eac)m(h)27 b(blo)s(c)m(k)e(is)h(handled)390 2437 y(indep)s(enden)m -(tly)-8 b(.)47 b(If)32 b(a)i(media)e(or)h(transmission)e(error)i -(causes)h(a)f(m)m(ulti-blo)s(c)m(k)f Fj(.bz2)g Fl(\014le)390 -2541 y(to)k(b)s(ecome)h(damaged,)g(it)e(ma)m(y)i(b)s(e)e(p)s(ossible)e 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-1327 y(whic)m(h)35 b(y)m(our)h(mac)m(hine)g(can)g(service)g(cac)m(he)i -(misses.)57 b(Because)37 b(of)g(this,)f(small)f(c)m(hanges)390 -1431 y(to)f(the)f(co)s(de)h(to)f(reduce)g(the)h(miss)d(rate)j(ha)m(v)m -(e)h(b)s(een)d(observ)m(ed)h(to)h(giv)m(e)g(disprop)s(ortion-)390 -1535 y(ately)i(large)f(p)s(erformance)f(impro)m(v)m(emen)m(ts.)56 -b(I)35 b(imagine)f Fj(bzip2)g Fl(will)e(p)s(erform)i(b)s(est)h(on)390 -1639 y(mac)m(hines)30 b(with)f(v)m(ery)i(large)f(cac)m(hes.)390 -1885 y Ff(CA)-14 b(VEA)k(TS)390 2072 y Fl(I/O)38 b(error)g(messages)h -(are)f(not)h(as)f(helpful)e(as)i(they)g(could)f(b)s(e.)64 -b Fj(bzip2)37 b Fl(tries)g(hard)g(to)390 2176 y(detect)29 -b(I/O)e(errors)g(and)f(exit)i(cleanly)-8 b(,)27 b(but)g(the)h(details)e -(of)h(what)h(the)f(problem)f(is)g(some-)390 2280 y(times)k(seem)h -(rather)f(misleading.)390 2431 y(This)j(man)m(ual)g(page)i(p)s(ertains) -e(to)i(v)m(ersion)f(1.0)i(of)e Fj(bzip2)p Fl(.)51 b(Compressed)34 -b(data)h(created)390 2534 y(b)m(y)25 b(this)e(v)m(ersion)i(is)e(en)m -(tirely)h(forw)m(ards)h(and)f(bac)m(kw)m(ards)h(compatible)f(with)f -(the)i(previous)390 2638 y(public)18 b(releases,)24 b(v)m(ersions)c -(0.1pl2,)k(0.9.0)e(and)f(0.9.5,)k(but)20 b(with)g(the)h(follo)m(wing)e -(exception:)390 2742 y(0.9.0)43 b(and)e(ab)s(o)m(v)m(e)h(can)g -(correctly)f(decompress)g(m)m(ultiple)e(concatenated)k(compressed)390 -2846 y(\014les.)c(0.1pl2)30 b(cannot)g(do)f(this;)f(it)h(will)e(stop)i -(after)h(decompressing)e(just)g(the)i(\014rst)e(\014le)g(in)390 -2949 y(the)j(stream.)390 3100 y Fj(bzip2recover)20 b -Fl(uses)k(32-bit)g(in)m(tegers)f(to)i(represen)m(t)f(bit)e(p)s -(ositions)g(in)g(compressed)i(\014les,)390 3204 y(so)j(it)f(cannot)i -(handle)d(compressed)i(\014les)f(more)h(than)f(512)i(megab)m(ytes)h -(long.)39 b(This)25 b(could)390 3308 y(easily)30 b(b)s(e)f(\014xed.)390 -3555 y Ff(A)m(UTHOR)390 3741 y Fl(Julian)f(Sew)m(ard,)i -Fj(jseward@acm.org)p Fl(.)390 3892 y(The)24 b(ideas)f(em)m(b)s(o)s -(died)f(in)h Fj(bzip2)f Fl(are)j(due)e(to)i(\(at)g(least\))g(the)f -(follo)m(wing)e(p)s(eople:)37 b(Mic)m(hael)390 3996 y(Burro)m(ws)48 -b(and)g(Da)m(vid)h(Wheeler)f(\(for)h(the)g(blo)s(c)m(k)f(sorting)g -(transformation\),)53 b(Da)m(vid)390 4100 y(Wheeler)45 -b(\(again,)50 b(for)45 b(the)g(Hu\013man)g(co)s(der\),)k(P)m(eter)d(F) --8 b(en)m(wic)m(k)46 b(\(for)g(the)f(structured)390 4204 -y(co)s(ding)26 b(mo)s(del)g(in)f(the)i(original)e Fj(bzip)p -Fl(,)i(and)f(man)m(y)h(re\014nemen)m(ts\),)h(and)e(Alistair)f -(Mo\013at,)390 4307 y(Radford)34 b(Neal)h(and)f(Ian)h(Witten)g(\(for)f -(the)h(arithmetic)g(co)s(der)f(in)g(the)h(original)d -Fj(bzip)p Fl(\).)390 4411 y(I)41 b(am)g(m)m(uc)m(h)h(indebted)e(for)h -(their)f(help,)j(supp)s(ort)c(and)i(advice.)74 b(See)41 -b(the)h(man)m(ual)e(in)390 4515 y(the)28 b(source)g(distribution)23 -b(for)28 b(p)s(oin)m(ters)e(to)j(sources)e(of)h(do)s(cumen)m(tation.)40 -b(Christian)25 b(v)m(on)390 4619 y(Ro)s(ques)31 b(encouraged)h(me)g(to) 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-(the)h(total)g(amoun)m(t)g(of)g(data)g(passed)f(in)m(to)g(and)g(out)g -(of)h(the)g(library)-8 b(,)41 b(resp)s(ectiv)m(ely)-8 -b(.)70 b(Y)-8 b(ou)150 2241 y(should)34 b(not)j(try)f(to)h(c)m(hange)g -(them.)58 b(As)36 b(of)h(v)m(ersion)f(1.0,)j(64-bit)d(coun)m(ts)h(are)f -(main)m(tained,)h(ev)m(en)g(on)150 2351 y(32-bit)i(platforms,)h(using)d -(the)i Fj(_hi32)e Fl(\014elds)g(to)j(store)f(the)g(upp)s(er)d(32)k -(bits)d(of)i(the)g(coun)m(t.)66 b(So,)41 b(for)150 2460 -y(example,)30 b(the)h(total)g(amoun)m(t)g(of)f(data)h(in)f(is)f -Fj(\(total_in_hi32)d(<<)k(32\))g(+)g(total_in_lo32)p -Fl(.)150 2617 y(P)m(arameter)g Fj(blockSize100k)25 b -Fl(sp)s(eci\014es)i(the)h(blo)s(c)m(k)g(size)h(to)g(b)s(e)f(used)f(for) -h(compression.)40 b(It)28 b(should)f(b)s(e)150 2727 y(a)k(v)-5 -b(alue)30 b(b)s(et)m(w)m(een)i(1)f(and)f(9)h(inclusiv)m(e,)e(and)h(the) -h(actual)g(blo)s(c)m(k)f(size)g(used)g(is)g(100000)j(x)e(this)e -(\014gure.)42 b(9)150 2836 y(giv)m(es)31 b(the)f(b)s(est)g(compression) -g(but)f(tak)m(es)j(most)f(memory)-8 b(.)150 2993 y(P)m(arameter)29 -b Fj(verbosity)c Fl(should)h(b)s(e)h(set)i(to)f(a)h(n)m(um)m(b)s(er)d -(b)s(et)m(w)m(een)j(0)f(and)f(4)h(inclusiv)m(e.)38 b(0)28 -b(is)f(silen)m(t,)h(and)150 3103 y(greater)j(n)m(um)m(b)s(ers)c(giv)m -(e)j(increasingly)d(v)m(erb)s(ose)j(monitoring/debugging)d(output.)40 -b(If)29 b(the)g(library)e(has)150 3212 y(b)s(een)j(compiled)e(with)i -Fj(-DBZ_NO_STDIO)p Fl(,)d(no)j(suc)m(h)g(output)g(will)e(app)s(ear)h -(for)h(an)m(y)h(v)m(erb)s(osit)m(y)f(setting.)150 3369 -y(P)m(arameter)35 b Fj(workFactor)d Fl(con)m(trols)i(ho)m(w)g(the)g -(compression)f(phase)h(b)s(eha)m(v)m(es)g(when)f(presen)m(ted)h(with) -150 3479 y(w)m(orst)40 b(case,)j(highly)37 b(rep)s(etitiv)m(e,)k(input) -d(data.)68 b(If)39 b(compression)g(runs)e(in)m(to)j(di\016culties)d -(caused)i(b)m(y)150 3588 y(rep)s(etitiv)m(e)34 b(data,)j(the)e(library) -d(switc)m(hes)j(from)f(the)h(standard)f(sorting)g(algorithm)g(to)i(a)f -(fallbac)m(k)f(al-)150 3698 y(gorithm.)47 b(The)32 b(fallbac)m(k)g(is)g -(slo)m(w)m(er)g(than)h(the)f(standard)g(algorithm)g(b)m(y)g(p)s(erhaps) -f(a)i(factor)h(of)e(three,)150 3808 y(but)e(alw)m(a)m(ys)h(b)s(eha)m(v) -m(es)f(reasonably)-8 b(,)31 b(no)f(matter)h(ho)m(w)g(bad)f(the)g -(input.)150 3965 y(Lo)m(w)m(er)25 b(v)-5 b(alues)24 b(of)h -Fj(workFactor)d Fl(reduce)i(the)h(amoun)m(t)g(of)g(e\013ort)g(the)g -(standard)f(algorithm)f(will)f(exp)s(end)150 4074 y(b)s(efore)j -(resorting)h(to)g(the)g(fallbac)m(k.)39 b(Y)-8 b(ou)27 -b(should)c(set)k(this)e(parameter)h(carefully;)g(to)s(o)h(lo)m(w,)g -(and)e(man)m(y)150 4184 y(inputs)32 b(will)f(b)s(e)i(handled)f(b)m(y)i -(the)g(fallbac)m(k)g(algorithm)f(and)g(so)h(compress)g(rather)g(slo)m -(wly)-8 b(,)34 b(to)s(o)h(high,)150 4293 y(and)24 b(y)m(our)h(a)m(v)m -(erage-to-w)m(orst)30 b(case)c(compression)e(times)h(can)g(b)s(ecome)g -(v)m(ery)h(large.)39 b(The)24 b(default)g(v)-5 b(alue)150 -4403 y(of)31 b(30)g(giv)m(es)f(reasonable)h(b)s(eha)m(viour)e(o)m(v)m 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Fj(libbzip2)1881 b Fl(14)150 299 y(P)m(ossible)29 -b(return)h(v)-5 b(alues:)572 450 y Fj(BZ_CONFIG_ERROR)663 -554 y Fl(if)29 b(the)i(library)d(has)i(b)s(een)f(mis-compiled)572 -657 y Fj(BZ_PARAM_ERROR)663 761 y Fl(if)g Fj(strm)g Fl(is)h -Fj(NULL)663 865 y Fl(or)g Fj(blockSize)e(<)i Fl(1)h(or)f -Fj(blockSize)e(>)i Fl(9)663 969 y(or)g Fj(verbosity)e(<)i -Fl(0)h(or)f Fj(verbosity)e(>)i Fl(4)663 1073 y(or)g Fj(workFactor)e(<)i -Fl(0)g(or)h Fj(workFactor)c(>)j Fl(250)572 1176 y Fj(BZ_MEM_ERROR)663 -1280 y Fl(if)f(not)i(enough)f(memory)g(is)f(a)m(v)-5 -b(ailable)572 1384 y Fj(BZ_OK)663 1488 y Fl(otherwise)150 -1645 y(Allo)m(w)m(able)30 b(next)g(actions:)572 1796 -y Fj(BZ2_bzCompress)663 1899 y Fl(if)f Fj(BZ_OK)g Fl(is)g(returned)572 -2003 y(no)h(sp)s(eci\014c)f(action)i(needed)f(in)f(case)i(of)g(error) -150 2255 y Ff(3.3.2)63 b Fe(BZ2_bzCompress)533 2441 y -Fj(int)47 b(BZ2_bzCompress)d(\()j(bz_stream)f(*strm,)g(int)h(action)f -(\);)150 2598 y Fl(Pro)m(vides)28 b(more)g(input)f(and/or)h(output)g -(bu\013er)g(space)h(for)f(the)h(library)-8 b(.)38 b(The)28 -b(caller)g(main)m(tains)f(input)150 2708 y(and)j(output)g(bu\013ers,)f -(and)h(calls)g Fj(BZ2_bzCompress)c Fl(to)31 b(transfer)f(data)h(b)s(et) -m(w)m(een)g(them.)150 2865 y(Before)j(eac)m(h)g(call)e(to)i -Fj(BZ2_bzCompress)p Fl(,)c Fj(next_in)h Fl(should)g(p)s(oin)m(t)h(at)h -(the)g(data)h(to)g(b)s(e)e(compressed,)150 2974 y(and)41 -b Fj(avail_in)f Fl(should)g(indicate)h(ho)m(w)h(man)m(y)f(b)m(ytes)i -(the)f(library)d(ma)m(y)k(read.)75 b Fj(BZ2_bzCompress)150 -3084 y Fl(up)s(dates)29 b Fj(next_in)p Fl(,)g Fj(avail_in)f -Fl(and)i Fj(total_in)e Fl(to)j(re\015ect)g(the)g(n)m(um)m(b)s(er)e(of)h -(b)m(ytes)h(it)f(has)g(read.)150 3241 y(Similarly)-8 -b(,)27 b Fj(next_out)h Fl(should)g(p)s(oin)m(t)h(to)i(a)f(bu\013er)f -(in)g(whic)m(h)g(the)h(compressed)g(data)h(is)e(to)i(b)s(e)e(placed,) -150 3350 y(with)i Fj(avail_out)f Fl(indicating)h(ho)m(w)h(m)m(uc)m(h)h -(output)f(space)h(is)f(a)m(v)-5 b(ailable.)46 b Fj(BZ2_bzCompress)29 -b Fl(up)s(dates)150 3460 y Fj(next_out)p Fl(,)f Fj(avail_out)g -Fl(and)i Fj(total_out)e Fl(to)j(re\015ect)g(the)f(n)m(um)m(b)s(er)g(of) -g(b)m(ytes)h(output.)150 3617 y(Y)-8 b(ou)40 b(ma)m(y)g(pro)m(vide)e -(and)h(remo)m(v)m(e)i(as)f(little)e(or)h(as)h(m)m(uc)m(h)f(data)h(as)g -(y)m(ou)f(lik)m(e)g(on)g(eac)m(h)i(call)e(of)g Fj(BZ2_)150 -3726 y(bzCompress)p Fl(.)48 b(In)33 b(the)h(limit,)f(it)h(is)f -(acceptable)h(to)h(supply)c(and)j(remo)m(v)m(e)h(data)g(one)f(b)m(yte)g -(at)h(a)f(time,)150 3836 y(although)28 b(this)f(w)m(ould)g(b)s(e)h -(terribly)e(ine\016cien)m(t.)39 b(Y)-8 b(ou)29 b(should)e(alw)m(a)m(ys) -h(ensure)g(that)h(at)g(least)g(one)f(b)m(yte)150 3946 -y(of)j(output)f(space)g(is)g(a)m(v)-5 b(ailable)30 b(at)h(eac)m(h)g -(call.)150 4102 y(A)38 b(second)h(purp)s(ose)d(of)j Fj(BZ2_bzCompress) -34 b Fl(is)j(to)i(request)f(a)h(c)m(hange)g(of)g(mo)s(de)e(of)i(the)f -(compressed)150 4212 y(stream.)150 4369 y(Conceptually)-8 -b(,)24 b(a)g(compressed)g(stream)g(can)f(b)s(e)g(in)g(one)h(of)f(four)g -(states:)39 b(IDLE,)24 b(R)m(UNNING,)h(FLUSH-)150 4478 -y(ING)37 b(and)g(FINISHING.)g(Before)i(initialisation)33 -b(\()p Fj(BZ2_bzCompressInit)p Fl(\))g(and)j(after)i(termination)150 -4588 y(\()p Fj(BZ2_bzCompressEnd)p Fl(\),)27 b(a)j(stream)h(is)f -(regarded)g(as)g(IDLE.)150 4745 y(Up)s(on)35 b(initialisation)e(\()p -Fj(BZ2_bzCompressInit)p Fl(\),)h(the)i(stream)h(is)e(placed)h(in)e(the) -j(R)m(UNNING)g(state.)150 4854 y(Subsequen)m(t)j(calls)g(to)i -Fj(BZ2_bzCompress)37 b Fl(should)j(pass)g Fj(BZ_RUN)g -Fl(as)h(the)g(requested)h(action;)47 b(other)150 4964 -y(actions)31 b(are)f(illegal)f(and)h(will)d(result)j(in)f -Fj(BZ_SEQUENCE_ERROR)p Fl(.)150 5121 y(A)m(t)38 b(some)f(p)s(oin)m(t,)h -(the)f(calling)e(program)i(will)d(ha)m(v)m(e)k(pro)m(vided)e(all)f(the) -i(input)e(data)j(it)e(w)m(an)m(ts)i(to.)61 b(It)150 5230 -y(will)28 b(then)h(w)m(an)m(t)i(to)g(\014nish)d(up)h({)i(in)d -(e\013ect,)k(asking)e(the)g(library)e(to)j(pro)s(cess)f(an)m(y)g(data)h -(it)f(migh)m(t)g(ha)m(v)m(e)150 5340 y(bu\013ered)25 -b(in)m(ternally)-8 b(.)38 b(In)25 b(this)g(state,)k Fj(BZ2_bzCompress) -22 b Fl(will)i(no)i(longer)g(attempt)h(to)g(read)f(data)h(from)p -eop -%%Page: 15 16 -15 15 bop 150 -116 a Fl(Chapter)30 b(3:)41 b(Programming)29 -b(with)g Fj(libbzip2)1881 b Fl(15)150 299 y Fj(next_in)p -Fl(,)33 b(but)g(it)h(will)d(w)m(an)m(t)k(to)g(write)e(data)h(to)h -Fj(next_out)p Fl(.)49 b(Because)36 b(the)e(output)f(bu\013er)g -(supplied)150 408 y(b)m(y)e(the)h(user)e(can)i(b)s(e)f(arbitrarily)d -(small,)j(the)g(\014nishing-up)d(op)s(eration)i(cannot)i(necessarily)e -(b)s(e)h(done)150 518 y(with)e(a)i(single)e(call)h(of)g -Fj(BZ2_bzCompress)p Fl(.)150 675 y(Instead,)47 b(the)d(calling)f -(program)g(passes)h Fj(BZ_FINISH)d Fl(as)j(an)g(action)g(to)h -Fj(BZ2_bzCompress)p Fl(.)77 b(This)150 784 y(c)m(hanges)30 -b(the)f(stream's)g(state)h(to)f(FINISHING.)g(An)m(y)g(remaining)e 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-i(more)g(input\).)37 b(By)24 b(comparing)150 1708 y(this)k(v)-5 -b(alue)28 b(with)g(that)h(of)h Fj(avail_in)c Fl(o)m(v)m(er)k(subsequen) -m(t)f(calls)f(to)h Fj(BZ2_bzCompress)p Fl(,)d(the)j(library)e(can)150 -1818 y(detect)33 b(an)m(y)e(attempts)i(to)f(slip)d(in)h(more)h(data)h -(to)h(compress.)43 b(An)m(y)31 b(calls)g(for)g(whic)m(h)f(this)g(is)h -(detected)150 1928 y(will)j(return)h Fj(BZ_SEQUENCE_ERROR)p -Fl(.)55 b(This)34 b(indicates)i(a)h(programming)e(mistak)m(e)i(whic)m -(h)e(should)g(b)s(e)150 2037 y(corrected.)150 2194 y(Instead)i(of)g -(asking)f(to)h(\014nish,)f(the)h(calling)f(program)g(ma)m(y)h(ask)g -Fj(BZ2_bzCompress)c Fl(to)38 b(tak)m(e)g(all)e(the)150 -2304 y(remaining)j(input,)i(compress)f(it)g(and)g(terminate)h(the)g -(curren)m(t)f(\(Burro)m(ws-Wheeler\))h(compression)150 -2413 y(blo)s(c)m(k.)e(This)26 b(could)h(b)s(e)g(useful)f(for)h(error)h -(con)m(trol)g(purp)s(oses.)38 b(The)27 b(mec)m(hanism)g(is)g(analogous) -h(to)g(that)150 2523 y(for)35 b(\014nishing:)46 b(call)35 -b Fj(BZ2_bzCompress)c Fl(with)i(an)i(action)g(of)g Fj(BZ_FLUSH)p -Fl(,)g(remo)m(v)m(e)h(output)f(data,)i(and)150 2632 y(p)s(ersist)h -(with)g(the)i Fj(BZ_FLUSH)e Fl(action)i(un)m(til)e(the)i(v)-5 -b(alue)39 b Fj(BZ_RUN)f Fl(is)h(returned.)68 b(As)39 -b(with)g(\014nishing,)150 2742 y Fj(BZ2_bzCompress)23 -b Fl(detects)28 b(an)m(y)f(attempt)h(to)f(pro)m(vide)f(more)h(input)e -(data)i(once)g(the)g(\015ush)e(has)i(b)s(egun.)150 2899 -y(Once)j(the)h(\015ush)e(is)g(complete,)i(the)g(stream)f(returns)g(to)h -(the)f(normal)g(R)m(UNNING)h(state.)150 3056 y(This)f(all)h(sounds)g -(prett)m(y)h(complex,)h(but)e(isn't)g(really)-8 b(.)45 -b(Here's)33 b(a)f(table)g(whic)m(h)f(sho)m(ws)h(whic)m(h)f(actions)150 -3165 y(are)e(allo)m(w)m(able)f(in)f(eac)m(h)j(state,)g(what)f(action)g -(will)c(b)s(e)j(tak)m(en,)j(what)d(the)h(next)f(state)i(is,)e(and)g -(what)h(the)150 3275 y(non-error)h(return)f(v)-5 b(alues)29 -b(are.)41 b(Note)32 b(that)e(y)m(ou)h(can't)g(explicitly)d(ask)i(what)g -(state)i(the)e(stream)h(is)e(in,)150 3384 y(but)h(nor)g(do)g(y)m(ou)h -(need)f(to)h({)g(it)e(can)i(b)s(e)f(inferred)e(from)i(the)h(v)-5 -b(alues)29 b(returned)h(b)m(y)g Fj(BZ2_bzCompress)p Fl(.)390 -3535 y(IDLE/)p Fj(any)572 3639 y Fl(Illegal.)60 b(IDLE)30 -b(state)i(only)d(exists)h(after)h Fj(BZ2_bzCompressEnd)26 -b Fl(or)572 3743 y(b)s(efore)k Fj(BZ2_bzCompressInit)p -Fl(.)572 3847 y(Return)f(v)-5 b(alue)30 b(=)g Fj(BZ_SEQUENCE_ERROR)390 -4054 y Fl(R)m(UNNING/)p Fj(BZ_RUN)572 4158 y Fl(Compress)f(from)h -Fj(next_in)f Fl(to)i Fj(next_out)d Fl(as)i(m)m(uc)m(h)h(as)f(p)s -(ossible.)572 4262 y(Next)h(state)h(=)e(R)m(UNNING)572 -4366 y(Return)f(v)-5 b(alue)30 b(=)g Fj(BZ_RUN_OK)390 -4573 y Fl(R)m(UNNING/)p Fj(BZ_FLUSH)572 4677 y Fl(Remem)m(b)s(er)g -(curren)m(t)g(v)-5 b(alue)30 b(of)g Fj(next_in)p Fl(.)59 -b(Compress)30 b(from)g Fj(next_in)572 4781 y Fl(to)h -Fj(next_out)d Fl(as)j(m)m(uc)m(h)f(as)h(p)s(ossible,)d(but)i(do)g(not)g -(accept)i(an)m(y)f(more)f(input.)572 4885 y(Next)h(state)h(=)e -(FLUSHING)572 4988 y(Return)f(v)-5 b(alue)30 b(=)g Fj(BZ_FLUSH_OK)390 -5196 y Fl(R)m(UNNING/)p Fj(BZ_FINISH)572 5300 y Fl(Remem)m(b)s(er)g -(curren)m(t)g(v)-5 b(alue)30 b(of)g Fj(next_in)p Fl(.)59 -b(Compress)30 b(from)g Fj(next_in)p eop -%%Page: 16 17 -16 16 bop 150 -116 a Fl(Chapter)30 b(3:)41 b(Programming)29 -b(with)g Fj(libbzip2)1881 b Fl(16)572 299 y(to)31 b Fj(next_out)d -Fl(as)j(m)m(uc)m(h)f(as)h(p)s(ossible,)d(but)i(do)g(not)g(accept)i(an)m -(y)f(more)f(input.)572 403 y(Next)h(state)h(=)e(FINISHING)572 -506 y(Return)f(v)-5 b(alue)30 b(=)g Fj(BZ_FINISH_OK)390 -714 y Fl(FLUSHING/)p Fj(BZ_FLUSH)572 818 y Fl(Compress)f(from)h -Fj(next_in)f Fl(to)i Fj(next_out)d Fl(as)i(m)m(uc)m(h)h(as)f(p)s -(ossible,)572 922 y(but)f(do)i(not)f(accept)i(an)m(y)f(more)f(input.) -572 1025 y(If)g(all)f(the)i(existing)e(input)f(has)i(b)s(een)g(used)g -(up)f(and)h(all)f(compressed)572 1129 y(output)h(has)g(b)s(een)g(remo)m -(v)m(ed)663 1233 y(Next)h(state)h(=)e(R)m(UNNING;)i(Return)d(v)-5 -b(alue)30 b(=)g Fj(BZ_RUN_OK)572 1337 y Fl(else)663 1440 -y(Next)h(state)h(=)e(FLUSHING;)h(Return)e(v)-5 b(alue)30 -b(=)g Fj(BZ_FLUSH_OK)390 1648 y Fl(FLUSHING/other)572 -1752 y(Illegal.)572 1856 y(Return)f(v)-5 b(alue)30 b(=)g -Fj(BZ_SEQUENCE_ERROR)390 2063 y Fl(FINISHING/)p Fj(BZ_FINISH)572 -2167 y Fl(Compress)f(from)h Fj(next_in)f Fl(to)i Fj(next_out)d -Fl(as)i(m)m(uc)m(h)h(as)f(p)s(ossible,)572 2271 y(but)f(to)j(not)e -(accept)i(an)m(y)f(more)f(input.)572 2374 y(If)g(all)f(the)i(existing)e -(input)f(has)i(b)s(een)g(used)g(up)f(and)h(all)f(compressed)572 -2478 y(output)h(has)g(b)s(een)g(remo)m(v)m(ed)663 2582 -y(Next)h(state)h(=)e(IDLE;)g(Return)g(v)-5 b(alue)30 -b(=)g Fj(BZ_STREAM_END)572 2686 y Fl(else)663 2790 y(Next)h(state)h(=)e -(FINISHING;)g(Return)g(v)-5 b(alue)30 b(=)g Fj(BZ_FINISHING)390 -2997 y Fl(FINISHING/other)572 3101 y(Illegal.)572 3205 -y(Return)f(v)-5 b(alue)30 b(=)g Fj(BZ_SEQUENCE_ERROR)150 -3361 y Fl(That)24 b(still)f(lo)s(oks)g(complicated?)39 -b(W)-8 b(ell,)25 b(fair)f(enough.)38 b(The)24 b(usual)f(sequence)i(of)f -(calls)g(for)g(compressing)150 3471 y(a)31 b(load)f(of)g(data)h(is:)225 -3628 y Fi(\017)60 b Fl(Get)31 b(started)g(with)e Fj(BZ2_bzCompressInit) -p Fl(.)225 3774 y Fi(\017)60 b Fl(Sho)m(v)m(el)38 b(data)h(in)e(and)g -(shlurp)e(out)k(its)e(compressed)h(form)g(using)e(zero)j(or)f(more)h -(calls)e(of)h Fj(BZ2_)330 3884 y(bzCompress)28 b Fl(with)h(action)h(=)g -Fj(BZ_RUN)p Fl(.)225 4030 y Fi(\017)60 b Fl(Finish)23 -b(up.)38 b(Rep)s(eatedly)25 b(call)f Fj(BZ2_bzCompress)e -Fl(with)i(action)h(=)g Fj(BZ_FINISH)p Fl(,)f(cop)m(ying)h(out)h(the)330 -4139 y(compressed)k(output,)g(un)m(til)f Fj(BZ_STREAM_END)e -Fl(is)i(returned.)225 4285 y Fi(\017)60 b Fl(Close)30 -b(up)f(and)h(go)h(home.)41 b(Call)29 b Fj(BZ2_bzCompressEnd)p -Fl(.)150 4478 y(If)23 b(the)h(data)h(y)m(ou)f(w)m(an)m(t)h(to)f -(compress)g(\014ts)f(in)m(to)h(y)m(our)g(input)e(bu\013er)h(all)f(at)j -(once,)h(y)m(ou)e(can)g(skip)f(the)h(calls)150 4588 y(of)37 -b Fj(BZ2_bzCompress)26 b(\()k(...,)f(BZ_RUN)g(\))36 b -Fl(and)g(just)g(do)h(the)g Fj(BZ2_bzCompress)26 b(\()k(...,)f -(BZ_FINISH)150 4698 y(\))h Fl(calls.)150 4854 y(All)36 -b(required)g(memory)h(is)f(allo)s(cated)i(b)m(y)f Fj -(BZ2_bzCompressInit)p Fl(.)56 b(The)37 b(compression)g(library)e(can) -150 4964 y(accept)g(an)m(y)f(data)h(at)g(all)d(\(ob)m(viously\).)51 -b(So)34 b(y)m(ou)g(shouldn't)e(get)j(an)m(y)f(error)f(return)g(v)-5 -b(alues)33 b(from)h(the)150 5074 y Fj(BZ2_bzCompress)29 -b Fl(calls.)46 b(If)32 b(y)m(ou)h(do,)g(they)g(will)d(b)s(e)i -Fj(BZ_SEQUENCE_ERROR)p Fl(,)d(and)j(indicate)f(a)i(bug)f(in)150 -5183 y(y)m(our)e(programming.)150 5340 y(T)-8 b(rivial)28 -b(other)j(p)s(ossible)d(return)h(v)-5 b(alues:)p eop -%%Page: 17 18 -17 17 bop 150 -116 a Fl(Chapter)30 b(3:)41 b(Programming)29 -b(with)g Fj(libbzip2)1881 b Fl(17)572 299 y Fj(BZ_PARAM_ERROR)663 -403 y Fl(if)29 b Fj(strm)g Fl(is)h Fj(NULL)p Fl(,)f(or)i -Fj(strm->s)d Fl(is)h Fj(NULL)150 652 y Ff(3.3.3)63 b -Fe(BZ2_bzCompressEnd)390 839 y Fj(int)47 b(BZ2_bzCompressEnd)c(\()k -(bz_stream)f(*strm)g(\);)150 996 y Fl(Releases)31 b(all)e(memory)h -(asso)s(ciated)h(with)e(a)i(compression)e(stream.)150 -1153 y(P)m(ossible)g(return)h(v)-5 b(alues:)481 1304 -y Fj(BZ_PARAM_ERROR)117 b Fl(if)30 b Fj(strm)f Fl(is)g -Fj(NULL)g Fl(or)i Fj(strm->s)d Fl(is)i Fj(NULL)481 1408 -y(BZ_OK)120 b Fl(otherwise)150 1657 y Ff(3.3.4)63 b Fe -(BZ2_bzDecompressInit)390 1844 y Fj(int)47 b(BZ2_bzDecompressInit)42 -b(\()48 b(bz_stream)d(*strm,)h(int)h(verbosity,)e(int)i(small)f(\);)150 -2001 y Fl(Prepares)30 b(for)f(decompression.)40 b(As)29 -b(with)g Fj(BZ2_bzCompressInit)p Fl(,)c(a)31 b Fj(bz_stream)c -Fl(record)j(should)e(b)s(e)150 2110 y(allo)s(cated)c(and)f(initialised) -e(b)s(efore)i(the)i(call.)38 b(Fields)22 b Fj(bzalloc)p -Fl(,)i Fj(bzfree)e Fl(and)i Fj(opaque)e Fl(should)g(b)s(e)h(set)i(if) -150 2220 y(a)h(custom)f(memory)g(allo)s(cator)g(is)g(required,)f(or)h -(made)h Fj(NULL)e Fl(for)h(the)g(normal)f Fj(malloc)p -Fl(/)p Fj(free)f Fl(routines.)150 2330 y(Up)s(on)h(return,)h(the)g(in)m -(ternal)f(state)i(will)c(ha)m(v)m(e)k(b)s(een)f(initialised,)d(and)i -Fj(total_in)f Fl(and)h Fj(total_out)f Fl(will)150 2439 -y(b)s(e)30 b(zero.)150 2596 y(F)-8 b(or)31 b(the)g(meaning)e(of)i -(parameter)g Fj(verbosity)p Fl(,)d(see)j Fj(BZ2_bzCompressInit)p -Fl(.)150 2753 y(If)e Fj(small)e Fl(is)h(nonzero,)i(the)f(library)e -(will)f(use)j(an)g(alternativ)m(e)h(decompression)e(algorithm)g(whic)m -(h)f(uses)150 2862 y(less)c(memory)g(but)g(at)h(the)g(cost)h(of)e -(decompressing)g(more)g(slo)m(wly)g(\(roughly)f(sp)s(eaking,)i(half)f -(the)h(sp)s(eed,)150 2972 y(but)34 b(the)i(maxim)m(um)d(memory)i -(requiremen)m(t)g(drops)e(to)j(around)e(2300k\).)57 b(See)35 -b(Chapter)g(2)g(for)g(more)150 3082 y(information)29 -b(on)h(memory)g(managemen)m(t.)150 3238 y(Note)40 b(that)f(the)f(amoun) -m(t)h(of)g(memory)f(needed)g(to)i(decompress)e(a)h(stream)f(cannot)h(b) -s(e)f(determined)150 3348 y(un)m(til)j(the)h(stream's)h(header)f(has)g -(b)s(een)g(read,)j(so)e(ev)m(en)g(if)e Fj(BZ2_bzDecompressInit)c -Fl(succeeds,)46 b(a)150 3458 y(subsequen)m(t)30 b Fj(BZ2_bzDecompress)c -Fl(could)j(fail)g(with)g Fj(BZ_MEM_ERROR)p Fl(.)150 3614 -y(P)m(ossible)g(return)h(v)-5 b(alues:)572 3765 y Fj(BZ_CONFIG_ERROR) -663 3869 y Fl(if)29 b(the)i(library)d(has)i(b)s(een)f(mis-compiled)572 -3973 y Fj(BZ_PARAM_ERROR)663 4077 y Fl(if)g Fj(\(small)46 -b(!=)h(0)h(&&)f(small)f(!=)h(1\))663 4181 y Fl(or)30 -b Fj(\(verbosity)45 b(<)j(0)f(||)g(verbosity)e(>)j(4\))572 -4284 y(BZ_MEM_ERROR)663 4388 y Fl(if)29 b(insu\016cien)m(t)g(memory)h -(is)f(a)m(v)-5 b(ailable)150 4545 y(Allo)m(w)m(able)30 -b(next)g(actions:)572 4696 y Fj(BZ2_bzDecompress)663 -4800 y Fl(if)f Fj(BZ_OK)g Fl(w)m(as)i(returned)572 4904 -y(no)f(sp)s(eci\014c)f(action)i(required)e(in)g(case)i(of)g(error)150 -5153 y Ff(3.3.5)63 b Fe(BZ2_bzDecompress)390 5340 y Fj(int)47 -b(BZ2_bzDecompress)c(\()48 b(bz_stream)d(*strm)h(\);)p -eop -%%Page: 18 19 -18 18 bop 150 -116 a Fl(Chapter)30 b(3:)41 b(Programming)29 -b(with)g Fj(libbzip2)1881 b Fl(18)150 299 y(Pro)m(vides)24 -b(more)g(input)f(and/out)h(output)g(bu\013er)g(space)h(for)f(the)g -(library)-8 b(.)37 b(The)24 b(caller)g(main)m(tains)f(input)150 -408 y(and)30 b(output)g(bu\013ers,)f(and)h(uses)g Fj(BZ2_bzDecompress)c -Fl(to)31 b(transfer)f(data)h(b)s(et)m(w)m(een)g(them.)150 -565 y(Before)g(eac)m(h)g(call)f(to)g Fj(BZ2_bzDecompress)p -Fl(,)c Fj(next_in)i Fl(should)h(p)s(oin)m(t)g(at)h(the)h(compressed)e -(data,)j(and)150 675 y Fj(avail_in)h Fl(should)h(indicate)h(ho)m(w)h -(man)m(y)f(b)m(ytes)i(the)e(library)f(ma)m(y)i(read.)56 -b Fj(BZ2_bzDecompress)32 b Fl(up-)150 784 y(dates)f Fj(next_in)p -Fl(,)e Fj(avail_in)f Fl(and)h Fj(total_in)g Fl(to)i(re\015ect)g(the)f -(n)m(um)m(b)s(er)f(of)i(b)m(ytes)g(it)f(has)g(read.)150 -941 y(Similarly)-8 b(,)37 b Fj(next_out)f Fl(should)g(p)s(oin)m(t)i(to) -g(a)h(bu\013er)e(in)g(whic)m(h)g(the)i(uncompressed)e(output)g(is)h(to) -h(b)s(e)150 1051 y(placed,)d(with)e Fj(avail_out)f Fl(indicating)g(ho)m -(w)i(m)m(uc)m(h)g(output)g(space)h(is)e(a)m(v)-5 b(ailable.)55 -b Fj(BZ2_bzCompress)150 1160 y Fl(up)s(dates)29 b Fj(next_out)p -Fl(,)g Fj(avail_out)f Fl(and)h Fj(total_out)f Fl(to)j(re\015ect)g(the)g -(n)m(um)m(b)s(er)e(of)h(b)m(ytes)h(output.)150 1317 y(Y)-8 -b(ou)40 b(ma)m(y)g(pro)m(vide)e(and)h(remo)m(v)m(e)i(as)f(little)e(or)h -(as)h(m)m(uc)m(h)f(data)h(as)g(y)m(ou)f(lik)m(e)g(on)g(eac)m(h)i(call)e -(of)g Fj(BZ2_)150 1427 y(bzDecompress)p Fl(.)e(In)27 -b(the)i(limit,)d(it)i(is)f(acceptable)j(to)f(supply)d(and)h(remo)m(v)m -(e)j(data)f(one)f(b)m(yte)h(at)g(a)g(time,)150 1537 y(although)f(this)f -(w)m(ould)g(b)s(e)h(terribly)e(ine\016cien)m(t.)39 b(Y)-8 -b(ou)29 b(should)e(alw)m(a)m(ys)h(ensure)g(that)h(at)g(least)g(one)f(b) -m(yte)150 1646 y(of)j(output)f(space)g(is)g(a)m(v)-5 -b(ailable)30 b(at)h(eac)m(h)g(call.)150 1803 y(Use)g(of)f -Fj(BZ2_bzDecompress)c Fl(is)k(simpler)e(than)i Fj(BZ2_bzCompress)p -Fl(.)150 1960 y(Y)-8 b(ou)31 b(should)d(pro)m(vide)h(input)f(and)i -(remo)m(v)m(e)i(output)d(as)i(describ)s(ed)d(ab)s(o)m(v)m(e,)k(and)d -(rep)s(eatedly)h(call)f Fj(BZ2_)150 2069 y(bzDecompress)35 -b Fl(un)m(til)i Fj(BZ_STREAM_END)e Fl(is)j(returned.)64 -b(App)s(earance)39 b(of)g Fj(BZ_STREAM_END)c Fl(denotes)150 -2179 y(that)47 b Fj(BZ2_bzDecompress)42 b Fl(has)k(detected)h(the)f -(logical)g(end)g(of)g(the)h(compressed)e(stream.)89 b -Fj(BZ2_)150 2289 y(bzDecompress)28 b Fl(will)g(not)j(pro)s(duce)f -Fj(BZ_STREAM_END)d Fl(un)m(til)j(all)f(output)i(data)h(has)e(b)s(een)h -(placed)f(in)m(to)150 2398 y(the)36 b(output)g(bu\013er,)h(so)g(once)g -Fj(BZ_STREAM_END)32 b Fl(app)s(ears,)38 b(y)m(ou)e(are)h(guaran)m(teed) -g(to)g(ha)m(v)m(e)h(a)m(v)-5 b(ailable)150 2508 y(all)29 -b(the)i(decompressed)f(output,)g(and)g Fj(BZ2_bzDecompressEnd)25 -b Fl(can)31 b(safely)f(b)s(e)f(called.)150 2665 y(If)40 -b(case)h(of)f(an)h(error)e(return)h(v)-5 b(alue,)42 b(y)m(ou)f(should)d -(call)h Fj(BZ2_bzDecompressEnd)c Fl(to)41 b(clean)f(up)g(and)150 -2774 y(release)31 b(memory)-8 b(.)150 2931 y(P)m(ossible)29 -b(return)h(v)-5 b(alues:)572 3082 y Fj(BZ_PARAM_ERROR)663 -3186 y Fl(if)29 b Fj(strm)g Fl(is)h Fj(NULL)f Fl(or)h -Fj(strm->s)f Fl(is)g Fj(NULL)663 3290 y Fl(or)h Fj(strm->avail_out)44 -b(<)j(1)572 3393 y(BZ_DATA_ERROR)663 3497 y Fl(if)29 -b(a)i(data)g(in)m(tegrit)m(y)f(error)g(is)g(detected)h(in)e(the)i -(compressed)f(stream)572 3601 y Fj(BZ_DATA_ERROR_MAGIC)663 -3705 y Fl(if)f(the)i(compressed)f(stream)g(do)s(esn't)h(b)s(egin)e -(with)g(the)h(righ)m(t)g(magic)h(b)m(ytes)572 3808 y -Fj(BZ_MEM_ERROR)663 3912 y Fl(if)e(there)i(w)m(asn't)f(enough)h(memory) -f(a)m(v)-5 b(ailable)572 4016 y Fj(BZ_STREAM_END)663 -4120 y Fl(if)29 b(the)i(logical)e(end)h(of)h(the)f(data)h(stream)g(w)m -(as)g(detected)g(and)f(all)663 4224 y(output)g(in)f(has)h(b)s(een)g 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-(b)s(elo)m(w,)j Fj(BZ2_bzRead)35 b Fl(will)h(decompress)i(the)g -Fj(nUnused)e Fl(b)m(ytes)j(starting)f(at)150 941 y Fj(unused)p -Fl(,)k(b)s(efore)e(starting)h(to)g(read)g(from)f(the)h(\014le)f -Fj(f)p Fl(.)71 b(A)m(t)42 b(most)f Fj(BZ_MAX_UNUSED)c -Fl(b)m(ytes)k(ma)m(y)h(b)s(e)150 1051 y(supplied)32 b(lik)m(e)k(this.) -55 b(If)36 b(this)e(facilit)m(y)h(is)g(not)h(required,)g(y)m(ou)g -(should)e(pass)h Fj(NULL)g Fl(and)g Fj(0)g Fl(for)h Fj(unused)150 -1160 y Fl(and)30 b(n)p Fj(Unused)e Fl(resp)s(ectiv)m(ely)-8 -b(.)150 1317 y(F)g(or)31 b(the)g(meaning)e(of)i(parameters)g -Fj(small)e Fl(and)g Fj(verbosity)p Fl(,)f(see)j Fj -(BZ2_bzDecompressInit)p Fl(.)150 1474 y(The)k(amoun)m(t)g(of)g(memory)g -(needed)g(to)g(decompress)g(a)h(\014le)e(cannot)h(b)s(e)g(determined)e -(un)m(til)h(the)h(\014le's)150 1584 y(header)22 b(has)f(b)s(een)g -(read.)38 b(So)22 b(it)f(is)g(p)s(ossible)e(that)k Fj(BZ2_bzReadOpen)17 -b Fl(returns)k Fj(BZ_OK)f Fl(but)h(a)i(subsequen)m(t)150 -1693 y(call)30 b(of)g Fj(BZ2_bzRead)e Fl(will)f(return)j -Fj(BZ_MEM_ERROR)p Fl(.)150 1850 y(P)m(ossible)f(assignmen)m(ts)h(to)h -Fj(bzerror)p Fl(:)572 2001 y Fj(BZ_CONFIG_ERROR)663 2105 -y Fl(if)e(the)i(library)d(has)i(b)s(een)f(mis-compiled)572 -2209 y Fj(BZ_PARAM_ERROR)663 2313 y Fl(if)g Fj(f)h Fl(is)g -Fj(NULL)663 2416 y Fl(or)g Fj(small)f Fl(is)g(neither)h -Fj(0)g Fl(nor)g Fj(1)663 2520 y Fl(or)g Fj(\(unused)46 -b(==)h(NULL)g(&&)g(nUnused)f(!=)h(0\))663 2624 y Fl(or)30 -b Fj(\(unused)46 b(!=)h(NULL)g(&&)g(!\(0)g(<=)g(nUnused)f(<=)h -(BZ_MAX_UNUSED\)\))572 2728 y(BZ_IO_ERROR)663 2831 y -Fl(if)29 b Fj(ferror\(f\))f Fl(is)h(nonzero)572 2935 -y Fj(BZ_MEM_ERROR)663 3039 y Fl(if)g(insu\016cien)m(t)g(memory)h(is)f -(a)m(v)-5 b(ailable)572 3143 y Fj(BZ_OK)663 3247 y Fl(otherwise.)150 -3403 y(P)m(ossible)29 b(return)h(v)-5 b(alues:)572 3554 -y(P)m(oin)m(ter)31 b(to)g(an)f(abstract)h Fj(BZFILE)663 -3658 y Fl(if)e Fj(bzerror)f Fl(is)i Fj(BZ_OK)572 3762 -y(NULL)663 3866 y Fl(otherwise)150 4023 y(Allo)m(w)m(able)g(next)g -(actions:)572 4174 y Fj(BZ2_bzRead)663 4277 y Fl(if)f -Fj(bzerror)f Fl(is)i Fj(BZ_OK)572 4381 y(BZ2_bzClose)663 -4485 y Fl(otherwise)150 4887 y Ff(3.4.2)63 b Fe(BZ2_bzRead)533 -5074 y Fj(int)47 b(BZ2_bzRead)e(\()j(int)e(*bzerror,)g(BZFILE)g(*b,)h -(void)f(*buf,)h(int)g(len)g(\);)150 5230 y Fl(Reads)35 -b(up)f(to)h Fj(len)f Fl(\(uncompressed\))h(b)m(ytes)g(from)f(the)h -(compressed)g(\014le)f Fj(b)g Fl(in)m(to)h(the)g(bu\013er)f -Fj(buf)p Fl(.)53 b(If)150 5340 y(the)30 b(read)f(w)m(as)h(successful,)f -Fj(bzerror)e Fl(is)i(set)h(to)g Fj(BZ_OK)e Fl(and)h(the)h(n)m(um)m(b)s -(er)e(of)i(b)m(ytes)g(read)f(is)g(returned.)p eop -%%Page: 21 22 -21 21 bop 150 -116 a Fl(Chapter)30 b(3:)41 b(Programming)29 -b(with)g Fj(libbzip2)1881 b Fl(21)150 299 y(If)33 b(the)g(logical)g -(end-of-stream)h(w)m(as)g(detected,)i Fj(bzerror)31 b -Fl(will)g(b)s(e)h(set)i(to)g Fj(BZ_STREAM_END)p Fl(,)d(and)i(the)150 -408 y(n)m(um)m(b)s(er)c(of)i(b)m(ytes)f(read)h(is)e(returned.)40 -b(All)29 b(other)h Fj(bzerror)f Fl(v)-5 b(alues)29 b(denote)i(an)g -(error.)150 565 y Fj(BZ2_bzRead)37 b Fl(will)f(supply)h -Fj(len)i Fl(b)m(ytes,)j(unless)c(the)i(logical)f(stream)h(end)e(is)h -(detected)i(or)e(an)g(error)150 675 y(o)s(ccurs.)75 b(Because)43 -b(of)f(this,)i(it)d(is)g(p)s(ossible)e(to)k(detect)g(the)f(stream)g -(end)f(b)m(y)h(observing)f(when)g(the)150 784 y(n)m(um)m(b)s(er)29 -b(of)h(b)m(ytes)g(returned)f(is)g(less)g(than)h(the)g(n)m(um)m(b)s(er)f -(requested.)40 b(Nev)m(ertheless,)31 b(this)e(is)g(regarded)150 -894 y(as)38 b(inadvisable;)g(y)m(ou)g(should)d(instead)i(c)m(hec)m(k)i -Fj(bzerror)d Fl(after)i(ev)m(ery)g(call)e(and)h(w)m(atc)m(h)i(out)f -(for)f Fj(BZ_)150 1004 y(STREAM_END)p Fl(.)150 1160 y(In)m(ternally)-8 -b(,)47 b Fj(BZ2_bzRead)41 b Fl(copies)j(data)g(from)g(the)g(compressed) -g(\014le)f(in)f(c)m(h)m(unks)i(of)g(size)g Fj(BZ_MAX_)150 -1270 y(UNUSED)31 b Fl(b)m(ytes)i(b)s(efore)f(decompressing)f(it.)47 -b(If)32 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Fl(tells)g(y)m(ou)h(y)m(our)h(\014le)e(is)g(corrupted)h(on)g -(decompression,)330 2273 y(and)29 b(y)m(ou)g(obtained)f(the)i(\014le)e -(via)h(FTP)-8 b(,)29 b(there)h(is)e(a)h(p)s(ossibilit)m(y)d(that)k(y)m -(ou)f(forgot)h(to)g(tell)e(FTP)h(to)330 2383 y(do)23 -b(a)g(binary)e(mo)s(de)i(transfer.)38 b(That)23 b(absolutely)f(will)e -(cause)j(the)h(\014le)e(to)h(b)s(e)g(non-decompressible.)330 -2492 y(Y)-8 b(ou'll)30 b(ha)m(v)m(e)h(to)g(transfer)f(it)g(again.)150 -2737 y(If)i(y)m(ou'v)m(e)h(incorp)s(orated)e Fj(libbzip2)f -Fl(in)m(to)i(y)m(our)g(o)m(wn)g(program)g(and)g(are)g(getting)h -(problems,)e(please,)150 2847 y(please,)d(please,)h(c)m(hec)m(k)g(that) -f(the)g(parameters)g(y)m(ou)g(are)g(passing)f(in)f(calls)h(to)h(the)g -(library)-8 b(,)26 b(are)j(correct,)150 2956 y(and)e(in)f(accordance)k -(with)c(what)i(the)g(do)s(cumen)m(tation)f(sa)m(ys)h(is)f(allo)m(w)m -(able.)39 b(I)28 b(ha)m(v)m(e)h(tried)e(to)h(mak)m(e)h(the)150 -3066 y(library)f(robust)i(against)g(suc)m(h)g(problems,)f(but)h(I'm)g -(sure)g(I)g(ha)m(v)m(en't)h(succeeded.)150 3223 y(Finally)-8 -b(,)32 b(if)g(the)h(ab)s(o)m(v)m(e)i(commen)m(ts)e(don't)g(help,)g(y)m -(ou'll)f(ha)m(v)m(e)i(to)g(send)e(me)h(a)g(bug)g(rep)s(ort.)48 -b(No)m(w,)34 b(it's)150 3332 y(just)c(amazing)g(ho)m(w)h(man)m(y)f(p)s -(eople)g(will)d(send)j(me)g(a)h(bug)f(rep)s(ort)g(sa)m(ying)g -(something)g(lik)m(e)481 3483 y(bzip2)f(crashed)h(with)f(segmen)m -(tation)j(fault)e(on)g(m)m(y)g(mac)m(hine)150 3640 y(and)h(absolutely)f -(nothing)h(else.)44 b(Needless)32 b(to)g(sa)m(y)-8 b(,)33 -b(a)f(suc)m(h)f(a)h(rep)s(ort)f(is)g Fc(totally)-8 b(,)32 -b(utterly)-8 b(,)32 b(completely)150 3750 y(and)40 b(comprehensiv)m -(ely)g(100\045)h(useless;)46 b(a)41 b(w)m(aste)g(of)g(y)m(our)g(time,)i -(m)m(y)e(time,)i(and)e(net)g(bandwidth)p Fl(.)150 3859 -y(With)31 b(no)h(details)f(at)i(all,)e(there's)h(no)g(w)m(a)m(y)h(I)f -(can)g(p)s(ossibly)d(b)s(egin)h(to)j(\014gure)e(out)i(what)e(the)i 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