store: implement fncache basic path encoding in C
(This is not yet enabled; it will be turned on in a followup patch.)
The path encoding performed by fncache is complex and (perhaps
surprisingly) slow enough to negatively affect the overall performance
of Mercurial.
For a short path (< 120 bytes), the Python code can be reduced to a fairly
tractable state machine that either determines that nothing needs to be
done in a single pass, or performs the encoding in a second pass.
For longer paths, we avoid the more complicated hashed encoding scheme
for now, and fall back to Python.
Raw performance: I measured in a repo containing 150,000 files in its tip
manifest, with a median path name length of 57 bytes, and 95th percentile
of 96 bytes.
In this repo, the Python code takes 3.1 seconds to encode all path
names, while the hybrid C-and-Python code (called from Python) takes
0.21 seconds, for a speedup of about 14.
Across several other large repositories, I've measured the speedup from
the C code at between 26x and 40x.
For path names above 120 bytes where we must fall back to Python for
hashed encoding, the speedup is about 1.7x. Thus absolute performance
will depend strongly on the characteristics of a particular repository.
A = 'data/abcdefghijklmnopqrstuvwxyz0123456789 !#%&\'()+,-.;=[]^`{}'
B = 'data/abcdefghijklmnopqrstuvwxyz0123456789 !#%&\'()+,-.;=[]^`{}'
uppercase char X is encoded as _x
A = 'data/ABCDEFGHIJKLMNOPQRSTUVWXYZ'
B = 'data/_a_b_c_d_e_f_g_h_i_j_k_l_m_n_o_p_q_r_s_t_u_v_w_x_y_z'
underbar is doubled
A = 'data/_'
B = 'data/__'
tilde is character-encoded
A = 'data/~'
B = 'data/~7e'
characters in ASCII code range 1..31
A = 'data/\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f'
B = 'data/~01~02~03~04~05~06~07~08~09~0a~0b~0c~0d~0e~0f~10~11~12~13~14~15~16~17~18~19~1a~1b~1c~1d~1e~1f'
characters in ASCII code range 126..255
A = 'data/~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f'
B = 'data/~7e~7f~80~81~82~83~84~85~86~87~88~89~8a~8b~8c~8d~8e~8f~90~91~92~93~94~95~96~97~98~99~9a~9b~9c~9d~9e~9f'
A = 'data/\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf'
B = 'data/~a0~a1~a2~a3~a4~a5~a6~a7~a8~a9~aa~ab~ac~ad~ae~af~b0~b1~b2~b3~b4~b5~b6~b7~b8~b9~ba~bb~bc~bd~be~bf'
A = 'data/\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf'
B = 'data/~c0~c1~c2~c3~c4~c5~c6~c7~c8~c9~ca~cb~cc~cd~ce~cf~d0~d1~d2~d3~d4~d5~d6~d7~d8~d9~da~db~dc~dd~de~df'
A = 'data/\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff'
B = 'data/~e0~e1~e2~e3~e4~e5~e6~e7~e8~e9~ea~eb~ec~ed~ee~ef~f0~f1~f2~f3~f4~f5~f6~f7~f8~f9~fa~fb~fc~fd~fe~ff'
Windows reserved characters
A = 'data/less <, greater >, colon :, double-quote ", backslash \\, pipe |, question-mark ?, asterisk *'
B = 'data/less ~3c, greater ~3e, colon ~3a, double-quote ~22, backslash ~5c, pipe ~7c, question-mark ~3f, asterisk ~2a'
encoding directories ending in .hg, .i or .d with '.hg' suffix
A = 'data/x.h.i/x.hg/x.i/x.d/foo'
B = 'data/x.h.i.hg/x.hg.hg/x.i.hg/x.d.hg/foo'
A = 'data/a.hg/a.i/a.d/foo'
B = 'data/a.hg.hg/a.i.hg/a.d.hg/foo'
A = 'data/au.hg/au.i/au.d/foo'
B = 'data/au.hg.hg/au.i.hg/au.d.hg/foo'
A = 'data/aux.hg/aux.i/aux.d/foo'
B = 'data/au~78.hg.hg/au~78.i.hg/au~78.d.hg/foo'
A = 'data/auxy.hg/auxy.i/auxy.d/foo'
B = 'data/auxy.hg.hg/auxy.i.hg/auxy.d.hg/foo'
but these are not encoded on *filenames*
A = 'data/foo/x.hg'
B = 'data/foo/x.hg'
A = 'data/foo/x.i'
B = 'data/foo/x.i'
A = 'data/foo/x.d'
B = 'data/foo/x.d'
A = 'data/foo/a.hg'
B = 'data/foo/a.hg'
A = 'data/foo/a.i'
B = 'data/foo/a.i'
A = 'data/foo/a.d'
B = 'data/foo/a.d'
A = 'data/foo/au.hg'
B = 'data/foo/au.hg'
A = 'data/foo/au.i'
B = 'data/foo/au.i'
A = 'data/foo/au.d'
B = 'data/foo/au.d'
A = 'data/foo/aux.hg'
B = 'data/foo/au~78.hg'
A = 'data/foo/aux.i'
B = 'data/foo/au~78.i'
A = 'data/foo/aux.d'
B = 'data/foo/au~78.d'
A = 'data/foo/auxy.hg'
B = 'data/foo/auxy.hg'
A = 'data/foo/auxy.i'
B = 'data/foo/auxy.i'
A = 'data/foo/auxy.d'
B = 'data/foo/auxy.d'
plain .hg, .i and .d directories have the leading dot encoded
A = 'data/.hg/.i/.d/foo'
B = 'data/~2ehg.hg/~2ei.hg/~2ed.hg/foo'
A = 'data/aux.bla/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c.i'
B = 'data/au~78.bla/bla.aux/pr~6e/_p_r_n/lpt/co~6d3/nu~6c/coma/foo._n_u_l/normal.c.i'
A = 'data/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT.i'
B = 'dh/au~78/second/x.prn/fourth/fi~3afth/sixth/seventh/eighth/nineth/tenth/loremia20419e358ddff1bf8751e38288aff1d7c32ec05.i'
A = 'data/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider.i'
B = 'dh/enterpri/openesba/contrib-/corba-bc/netbeans/wsdlexte/src/main/java/org.net7018f27961fdf338a598a40c4683429e7ffb9743.i'
A = 'data/AUX.THE-QUICK-BROWN-FOX-JU:MPS-OVER-THE-LAZY-DOG-THE-QUICK-BROWN-FOX-JUMPS-OVER-THE-LAZY-DOG.TXT.i'
B = 'dh/au~78.the-quick-brown-fox-ju~3amps-over-the-lazy-dog-the-quick-brown-fox-jud4dcadd033000ab2b26eb66bae1906bcb15d4a70.i'
A = 'data/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt'
B = 'dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilenaf93030515d9849cfdca52937c2204d19f83913e5.txt'
A = 'data/Project.Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt'
B = 'dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilena0fd7c506f5c9d58204444fc67e9499006bd2d445.txt'
A = 'data/foo.../foo / /a./_. /__/.x../ bla/.FOO/something.i'
B = 'data/foo..~2e/foo ~20/~20/a~2e/__.~20/____/~2ex.~2e/~20 bla/~2e_f_o_o/something.i'
A = 'data/c/co/com/com0/com1/com2/com3/com4/com5/com6/com7/com8/com9'
B = 'data/c/co/com/com0/co~6d1/co~6d2/co~6d3/co~6d4/co~6d5/co~6d6/co~6d7/co~6d8/co~6d9'
A = 'data/C/CO/COM/COM0/COM1/COM2/COM3/COM4/COM5/COM6/COM7/COM8/COM9'
B = 'data/_c/_c_o/_c_o_m/_c_o_m0/_c_o_m1/_c_o_m2/_c_o_m3/_c_o_m4/_c_o_m5/_c_o_m6/_c_o_m7/_c_o_m8/_c_o_m9'
A = 'data/c.x/co.x/com.x/com0.x/com1.x/com2.x/com3.x/com4.x/com5.x/com6.x/com7.x/com8.x/com9.x'
B = 'data/c.x/co.x/com.x/com0.x/co~6d1.x/co~6d2.x/co~6d3.x/co~6d4.x/co~6d5.x/co~6d6.x/co~6d7.x/co~6d8.x/co~6d9.x'
A = 'data/x.c/x.co/x.com0/x.com1/x.com2/x.com3/x.com4/x.com5/x.com6/x.com7/x.com8/x.com9'
B = 'data/x.c/x.co/x.com0/x.com1/x.com2/x.com3/x.com4/x.com5/x.com6/x.com7/x.com8/x.com9'
A = 'data/cx/cox/comx/com0x/com1x/com2x/com3x/com4x/com5x/com6x/com7x/com8x/com9x'
B = 'data/cx/cox/comx/com0x/com1x/com2x/com3x/com4x/com5x/com6x/com7x/com8x/com9x'
A = 'data/xc/xco/xcom0/xcom1/xcom2/xcom3/xcom4/xcom5/xcom6/xcom7/xcom8/xcom9'
B = 'data/xc/xco/xcom0/xcom1/xcom2/xcom3/xcom4/xcom5/xcom6/xcom7/xcom8/xcom9'
A = 'data/l/lp/lpt/lpt0/lpt1/lpt2/lpt3/lpt4/lpt5/lpt6/lpt7/lpt8/lpt9'
B = 'data/l/lp/lpt/lpt0/lp~741/lp~742/lp~743/lp~744/lp~745/lp~746/lp~747/lp~748/lp~749'
A = 'data/L/LP/LPT/LPT0/LPT1/LPT2/LPT3/LPT4/LPT5/LPT6/LPT7/LPT8/LPT9'
B = 'data/_l/_l_p/_l_p_t/_l_p_t0/_l_p_t1/_l_p_t2/_l_p_t3/_l_p_t4/_l_p_t5/_l_p_t6/_l_p_t7/_l_p_t8/_l_p_t9'
A = 'data/l.x/lp.x/lpt.x/lpt0.x/lpt1.x/lpt2.x/lpt3.x/lpt4.x/lpt5.x/lpt6.x/lpt7.x/lpt8.x/lpt9.x'
B = 'data/l.x/lp.x/lpt.x/lpt0.x/lp~741.x/lp~742.x/lp~743.x/lp~744.x/lp~745.x/lp~746.x/lp~747.x/lp~748.x/lp~749.x'
A = 'data/x.l/x.lp/x.lpt/x.lpt0/x.lpt1/x.lpt2/x.lpt3/x.lpt4/x.lpt5/x.lpt6/x.lpt7/x.lpt8/x.lpt9'
B = 'data/x.l/x.lp/x.lpt/x.lpt0/x.lpt1/x.lpt2/x.lpt3/x.lpt4/x.lpt5/x.lpt6/x.lpt7/x.lpt8/x.lpt9'
A = 'data/lx/lpx/lptx/lpt0x/lpt1x/lpt2x/lpt3x/lpt4x/lpt5x/lpt6x/lpt7x/lpt8x/lpt9x'
B = 'data/lx/lpx/lptx/lpt0x/lpt1x/lpt2x/lpt3x/lpt4x/lpt5x/lpt6x/lpt7x/lpt8x/lpt9x'
A = 'data/xl/xlp/xlpt/xlpt0/xlpt1/xlpt2/xlpt3/xlpt4/xlpt5/xlpt6/xlpt7/xlpt8/xlpt9'
B = 'data/xl/xlp/xlpt/xlpt0/xlpt1/xlpt2/xlpt3/xlpt4/xlpt5/xlpt6/xlpt7/xlpt8/xlpt9'
A = 'data/con/p/pr/prn/a/au/aux/n/nu/nul'
B = 'data/co~6e/p/pr/pr~6e/a/au/au~78/n/nu/nu~6c'
A = 'data/CON/P/PR/PRN/A/AU/AUX/N/NU/NUL'
B = 'data/_c_o_n/_p/_p_r/_p_r_n/_a/_a_u/_a_u_x/_n/_n_u/_n_u_l'
A = 'data/con.x/p.x/pr.x/prn.x/a.x/au.x/aux.x/n.x/nu.x/nul.x'
B = 'data/co~6e.x/p.x/pr.x/pr~6e.x/a.x/au.x/au~78.x/n.x/nu.x/nu~6c.x'
A = 'data/x.con/x.p/x.pr/x.prn/x.a/x.au/x.aux/x.n/x.nu/x.nul'
B = 'data/x.con/x.p/x.pr/x.prn/x.a/x.au/x.aux/x.n/x.nu/x.nul'
A = 'data/conx/px/prx/prnx/ax/aux/auxx/nx/nux/nulx'
B = 'data/conx/px/prx/prnx/ax/au~78/auxx/nx/nux/nulx'
A = 'data/xcon/xp/xpr/xprn/xa/xau/xaux/xn/xnu/xnul'
B = 'data/xcon/xp/xpr/xprn/xa/xau/xaux/xn/xnu/xnul'
A = 'data/a./au./aux./auxy./aux.'
B = 'data/a~2e/au~2e/au~78~2e/auxy~2e/au~78~2e'
A = 'data/c./co./con./cony./con.'
B = 'data/c~2e/co~2e/co~6e~2e/cony~2e/co~6e~2e'
A = 'data/p./pr./prn./prny./prn.'
B = 'data/p~2e/pr~2e/pr~6e~2e/prny~2e/pr~6e~2e'
A = 'data/n./nu./nul./nuly./nul.'
B = 'data/n~2e/nu~2e/nu~6c~2e/nuly~2e/nu~6c~2e'
A = 'data/l./lp./lpt./lpt1./lpt1y./lpt1.'
B = 'data/l~2e/lp~2e/lpt~2e/lp~741~2e/lpt1y~2e/lp~741~2e'
A = 'data/lpt9./lpt9y./lpt9.'
B = 'data/lp~749~2e/lpt9y~2e/lp~749~2e'
A = 'data/com./com1./com1y./com1.'
B = 'data/com~2e/co~6d1~2e/com1y~2e/co~6d1~2e'
A = 'data/com9./com9y./com9.'
B = 'data/co~6d9~2e/com9y~2e/co~6d9~2e'
A = 'data/a /au /aux /auxy /aux '
B = 'data/a~20/au~20/aux~20/auxy~20/aux~20'
largest unhashed path
A = 'data/123456789-123456789-123456789-123456789-123456789-unhashed--xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'data/123456789-123456789-123456789-123456789-123456789-unhashed--xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
shortest hashed path
A = 'data/123456789-123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/123456789-123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxe9c55002b50bf5181e7a6fc1f60b126e2a6fcf71'
changing one char in part that's hashed away produces a different hash
A = 'data/123456789-123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxy-123456789-123456'
B = 'dh/123456789-123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxd24fa4455faf8a94350c18e5eace7c2bb17af706'
uppercase hitting length limit due to encoding
A = 'data/A23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/a23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxcbbc657029b41b94ed510d05feb6716a5c03bc6b'
A = 'data/Z23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/z23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxx938f32a725c89512833fb96b6602dd9ebff51ddd'
compare with lowercase not hitting limit
A = 'data/a23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'data/a23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
A = 'data/z23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'data/z23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
not hitting limit with any of these
A = 'data/abcdefghijklmnopqrstuvwxyz0123456789 !#%&\'()+,-.;=[]^`{}xxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'data/abcdefghijklmnopqrstuvwxyz0123456789 !#%&\'()+,-.;=[]^`{}xxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
underbar hitting length limit due to encoding
A = 'data/_23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/_23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxx9921a01af50feeabc060ce00eee4cba6efc31d2b'
tilde hitting length limit due to encoding
A = 'data/~23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~7e23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx9cec6f97d569c10995f785720044ea2e4227481b'
Windows reserved characters hitting length limit
A = 'data/<23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~3c23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxee67d8f275876ca1ef2500fc542e63c885c4e62d'
A = 'data/>23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~3e23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx387a85a5b1547cc9136310c974df716818458ddb'
A = 'data/:23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~3a23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx2e4154fb571d13d22399c58cc4ef4858e4b75999'
A = 'data/"23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~2223456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxfc7e3ec7b0687ee06ed8c32fef0eb0c1980259f5'
A = 'data/\\23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~5c23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx944e1f2b7110687e116e0d151328ac648b06ab4a'
A = 'data/|23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~7c23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx28b23dd3fd0242946334126ab62bcd772aac32f4'
A = 'data/?23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~3f23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxa263022d3994d2143d98f94f431eef8b5e7e0f8a'
A = 'data/*23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~2a23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx0e7e6020e3c00ba7bb7893d84ca2966fbf53e140'
initial space hitting length limit
A = 'data/ 23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~2023456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx92acbc78ef8c0b796111629a02601f07d8aec4ea'
initial dot hitting length limit
A = 'data/.23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~2e23456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxdbe19cc6505b3515ab9228cebf877ad07075168f'
trailing space in filename hitting length limit
A = 'data/123456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-1234 '
B = 'dh/123456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxx0025dc73e04f97426db4893e3bf67d581dc6d066'
trailing dot in filename hitting length limit
A = 'data/123456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-1234.'
B = 'dh/123456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxx85a16cf03ee7feba8a5abc626f1ba9886d01e89d'
initial space in directory hitting length limit
A = 'data/ x/456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~20x/456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx1b3a3b712b2ac00d6af14ae8b4c14fdbf904f516'
initial dot in directory hitting length limit
A = 'data/.x/456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/~2ex/456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx39dbc4c193a5643a8936fc69c3363cd7ac91ab14'
trailing space in directory hitting length limit
A = 'data/x /456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/x~20/456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx2253c341df0b5290790ad312cd8499850f2273e5'
trailing dot in directory hitting length limit
A = 'data/x./456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/x~2e/456789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxcc0324d696d34562b44b5138db08ee1594ccc583'
with directories that need direncoding, hitting length limit
A = 'data/x.i/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/x.i.hg/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxa4c4399bdf81c67dbbbb7060aa0124d8dea94f74'
A = 'data/x.d/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/x.d.hg/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxx1303fa90473b230615f5b3ea7b660e881ae5270a'
A = 'data/x.hg/5789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/x.hg.hg/5789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxx26d724a8af68e7a4e4455e6602ea9adbd0eb801f'
Windows reserved filenames, hitting length limit
A = 'data/con/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/co~6e/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxc0794d4f4c605a2617900eb2563d7113cf6ea7d3'
A = 'data/prn/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/pr~6e/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx64db876e1a9730e27236cb9b167aff942240e932'
A = 'data/aux/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/au~78/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx8a178558405ca6fb4bbd75446dfa186f06751a0d'
A = 'data/nul/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/nu~6c/56789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxc5e51b6fec1bd07bd243b053a0c3f7209855b886'
A = 'data/com1/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/co~6d1/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx32f5f44ece3bb62b9327369ca84cc19c86259fcd'
A = 'data/com9/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/co~6d9/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxx734360b28c66a3230f55849fe8926206d229f990'
A = 'data/lpt1/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/lp~741/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxe6f16ab4b6b0637676b2842b3345c9836df46ef7'
A = 'data/lpt9/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'dh/lp~749/6789-123456789-123456789-123456789-123456789-xxxxxxxxx-xxxxxxxxx-xxxxxa475814c51acead3e44f2ff801f0c4903f986157'
non-reserved names, just not hitting limit
A = 'data/123456789-123456789-123456789-123456789-123456789-/com/com0/lpt/lpt0/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
B = 'data/123456789-123456789-123456789-123456789-123456789-/com/com0/lpt/lpt0/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12345'
hashed path with largest untruncated 1st dir
A = 'data/12345678/-123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/-123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxx4e9e9e384d00929a93b6835fbf976eb32321ff3c'
hashed path with smallest truncated 1st dir
A = 'data/123456789/123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/123456789-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxx1f4e4ec5f2be76e109bfaa8e31c062fe426d5490'
hashed path with largest untruncated two dirs
A = 'data/12345678/12345678/9-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/9-123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxx3332d8329d969cf835542a9f2cbcfb385b6cf39d'
hashed path with smallest truncated two dirs
A = 'data/123456789/123456789/123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/123456789-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx9699559798247dffa18717138859be5f8874840e'
hashed path with largest untruncated three dirs
A = 'data/12345678/12345678/12345678/89-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/89-123456789-123456789-hashed----xxxxxxxxx-xxxxxxxf0a2b053bb1369cce02f78c217d6a7aaea18c439'
hashed path with smallest truncated three dirs
A = 'data/123456789/123456789/123456789/123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/123456789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-1c6f8284967384ec13985a046d3553179d9d03cd'
hashed path with largest untruncated four dirs
A = 'data/12345678/12345678/12345678/12345678/789-123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/789-123456789-hashed----xxxxxxxxx-xxxxxxx0d30c99049d8f0ff97b94d4ef302027e8d54c6fd'
hashed path with smallest truncated four dirs
A = 'data/123456789/123456789/123456789/123456789/123456789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/123456789-hashed----xxxxxxxxx-xxxxxxxxx-x46162779e1a771810b37a737f82ae7ed33771402'
hashed path with largest untruncated five dirs
A = 'data/12345678/12345678/12345678/12345678/12345678/6789-hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/6789-hashed----xxxxxxxxx-xxxxxxxbfe752ddc8b003c2790c66a9f2eb1ea75c114390'
hashed path with smallest truncated five dirs
A = 'data/123456789/123456789/123456789/123456789/123456789/hashed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/hashed----xxxxxxxxx-xxxxxxxxx-xxb94c27b3532fa880cdd572b1c514785cab7b6ff2'
hashed path with largest untruncated six dirs
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/ed----xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/ed----xxxxxxxxx-xxxxxxxcd8cc5483a0f3be409e0e5d4bf9e36e113c59235'
hashed path with smallest truncated six dirs
A = 'data/123456789/123456789/123456789/123456789/123456789/123456789/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxxxxx-xxxxxxxxx-xxx47dd6f616f833a142da00701b334cebbf640da06'
hashed path with largest untruncated seven dirs
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxx-xxxxxxx1c8ed635229fc22efe51035feeadeb4c8a0ecb82'
hashed path with smallest truncated seven dirs
A = 'data/123456789/123456789/123456789/123456789/123456789/123456789/123456789/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxxxxx-xxxx298ff7d33f8ce6db57930837ffea2fb2f48bb926'
hashed path with largest untruncated eight dirs
(directory 8 is dropped because it hits _maxshortdirslen)
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxxx-xxxxxxc8996ccd41b471f768057181a4d59d2febe7277d'
hashed path with smallest truncated eight dirs
(directory 8 is dropped because it hits _maxshortdirslen)
A = 'data/123456789/123456789/123456789/123456789/123456789/123456789/123456789/123456789/xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxxxxx-xxxx4fa04a839a6bda93e1c21c713f2edcbd16e8890d'
hashed path with largest non-dropped directory 8
(just not hitting the _maxshortdirslen boundary)
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxx4d43d1ccaa20efbfe99ec779dc063611536ff2c5'
...adding one truncated char to dir 1..7 won't drop dir 8
A = 'data/12345678x/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxx0f9efce65189cc60fd90fe4ffd49d7b58bbe0f2e'
A = 'data/12345678/12345678x/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxx945ca395708cafdd54a94501859beabd3e243921'
A = 'data/12345678/12345678/12345678x/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxac62bf6898c4fd0502146074547c11caa751a327'
A = 'data/12345678/12345678/12345678/12345678x/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxx2ae5a2baed7983fae8974d0ca06c6bf08b9aee92'
A = 'data/12345678/12345678/12345678/12345678/12345678x/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxx214aba07b6687532a43d1e9eaf6e88cfca96b68c'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678x/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxe7a022ae82f0f55cf4e0498e55ba59ea4ebb55bf'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678x/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxb51ce61164996a80f36ce3cfe64b62d519aedae3'
hashed path with shortest dropped directory 8
(just hitting the _maxshortdirslen boundary)
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/123456/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/xxxxxxxxx-xxxx11fa9873cc6c3215eae864528b5530a04efc6cfe'
hashed path that drops dir 8 due to dot or space at end is
encoded, and thus causing to hit _maxshortdirslen
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/1234./-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/-xxxxxxxxx-xxx602df9b45bec564e2e1f0645d5140dddcc76ed58'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/1234 /-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/-xxxxxxxxx-xxxd99ff212bc84b4d1f70cd6b0071e3ef69d4e12ce'
... with dir 8 short enough for encoding
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12./xx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12~2e/xx-xxxxx7baeb5ed7f14a586ee1cacecdbcbff70032d1b3c'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12 /xx-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-123456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12~20/xx-xxxxxcf79ca9795f77d7f75745da36807e5d772bd5182'
extensions are replicated on hashed paths (unbounded!)
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.345'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxx50a65dfc4ab6bf5fb9ba949447ccaf456c1ebf30.345'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxe5f03f29a0a5876660a28aefc43f978add5a7659.3456'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.34567'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xc2609a92347e5a14c29211c6cd634732d1f0c968.34567'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.345678'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-695e97d34c6cd8186afa3c74a56243bd645d50c3.345678'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/b067582449be78bc1266e9195785a5c6165380e6.3456789'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/d3442b4cfe1fdbde1c4c60ad421e946344111961.3456789-'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-1'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/40a78aaf2114e1b82f91ac3ff234bf358d99dbba.3456789-1'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/1e04221e6fbff8cfbeaf555d11550dc573e3326d.3456789-12'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-123'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/5e3b3973b3c9297b4577a4cf1d58162545a6b454.3456789-123'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-1234'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/6ee6ef477c7ba44ff19c7d97fc4ac7fa4a8e4665.3456789-1234'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/f08b927027344ec4a7f1994ecb0effe2b9cc1215.3456789-12345'
A = 'data/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/-xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz-ABCDEFGHIJKLMNOPRSTUVWXYZ-1234567890-xxxxxxxxx-xxxxxxxxx-xxxxxxxx-xxxxxxxxx-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww'
B = 'dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/28de8651e30eeb95f4b97edb7d12b281d3fb3ce0.3456789-12345-abcdefghijklmnoprstuvwxyz-abcdefghjiklmnopqrstuvwxyz-abcdefghijklmnoprstuvwxyz-1234567890-xxxxxxxxx-xxxxxxxxx-xxxxxxxx-xxxxxxxxx-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww-wwwwwwwww'