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2060: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
2070: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
2080: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
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21b0: 73 3b 0a 20 20 20 20 69 6e 74 20 6e 6f 68 65 61 s;. int nohea
21c0: 64 65 72 20 3d 20 30 3b 0a 20 20 20 20 73 74 61 der = 0;. sta
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3020: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3030: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3040: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3050: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
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3070: 5a 45 58 50 4f 52 54 20 64 65 66 6c 61 74 65 52 ZEXPORT deflateR
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3090: 7a 5f 73 74 72 65 61 6d 70 20 73 74 72 6d 3b 0a z_streamp strm;.
30a0: 7b 0a 20 20 20 20 64 65 66 6c 61 74 65 5f 73 74 {. deflate_st
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30c0: 20 69 66 20 28 73 74 72 6d 20 3d 3d 20 5a 5f 4e if (strm == Z_N
30d0: 55 4c 4c 20 7c 7c 20 73 74 72 6d 2d 3e 73 74 61 ULL || strm->sta
30e0: 74 65 20 3d 3d 20 5a 5f 4e 55 4c 4c 20 7c 7c 0a te == Z_NULL ||.
30f0: 20 20 20 20 20 20 20 20 73 74 72 6d 2d 3e 7a 61 strm->za
3100: 6c 6c 6f 63 20 3d 3d 20 5a 5f 4e 55 4c 4c 20 7c lloc == Z_NULL |
3110: 7c 20 73 74 72 6d 2d 3e 7a 66 72 65 65 20 3d 3d | strm->zfree ==
3120: 20 5a 5f 4e 55 4c 4c 29 20 72 65 74 75 72 6e 20 Z_NULL) return
3130: 5a 5f 53 54 52 45 41 4d 5f 45 52 52 4f 52 3b 0a Z_STREAM_ERROR;.
3140: 0a 20 20 20 20 73 74 72 6d 2d 3e 74 6f 74 61 6c . strm->total
3150: 5f 69 6e 20 3d 20 73 74 72 6d 2d 3e 74 6f 74 61 _in = strm->tota
3160: 6c 5f 6f 75 74 20 3d 20 30 3b 0a 20 20 20 20 73 l_out = 0;. s
3170: 74 72 6d 2d 3e 6d 73 67 20 3d 20 5a 5f 4e 55 4c trm->msg = Z_NUL
3180: 4c 3b 20 2f 2a 20 75 73 65 20 7a 66 72 65 65 20 L; /* use zfree
3190: 69 66 20 77 65 20 65 76 65 72 20 61 6c 6c 6f 63 if we ever alloc
31a0: 61 74 65 20 6d 73 67 20 64 79 6e 61 6d 69 63 61 ate msg dynamica
31b0: 6c 6c 79 20 2a 2f 0a 20 20 20 20 73 74 72 6d 2d lly */. strm-
31c0: 3e 64 61 74 61 5f 74 79 70 65 20 3d 20 5a 5f 55 >data_type = Z_U
31d0: 4e 4b 4e 4f 57 4e 3b 0a 0a 20 20 20 20 73 20 3d NKNOWN;.. s =
31e0: 20 28 64 65 66 6c 61 74 65 5f 73 74 61 74 65 20 (deflate_state
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3200: 20 20 20 73 2d 3e 70 65 6e 64 69 6e 67 20 3d 20 s->pending =
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32a0: 7d 0a 20 20 20 20 73 2d 3e 73 74 61 74 75 73 20 }. s->status
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32e0: 6d 2d 3e 61 64 6c 65 72 20 3d 20 31 3b 0a 20 20 m->adler = 1;.
32f0: 20 20 73 2d 3e 6c 61 73 74 5f 66 6c 75 73 68 20 s->last_flush
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3320: 20 20 20 20 6c 6d 5f 69 6e 69 74 28 73 29 3b 0a lm_init(s);.
3330: 0a 20 20 20 20 72 65 74 75 72 6e 20 5a 5f 4f 4b . return Z_OK
3340: 3b 0a 7d 0a 0a 2f 2a 20 3d 3d 3d 3d 3d 3d 3d 3d ;.}../* ========
3350: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3360: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3370: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3380: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3390: 3d 20 2a 2f 0a 69 6e 74 20 5a 45 58 50 4f 52 54 = */.int ZEXPORT
33a0: 20 64 65 66 6c 61 74 65 50 61 72 61 6d 73 28 73 deflateParams(s
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33f0: 20 73 74 72 61 74 65 67 79 3b 0a 7b 0a 20 20 20 strategy;.{.
3400: 20 64 65 66 6c 61 74 65 5f 73 74 61 74 65 20 2a deflate_state *
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3440: 20 20 20 20 69 66 20 28 73 74 72 6d 20 3d 3d 20 if (strm ==
3450: 5a 5f 4e 55 4c 4c 20 7c 7c 20 73 74 72 6d 2d 3e Z_NULL || strm->
3460: 73 74 61 74 65 20 3d 3d 20 5a 5f 4e 55 4c 4c 29 state == Z_NULL)
3470: 20 72 65 74 75 72 6e 20 5a 5f 53 54 52 45 41 4d return Z_STREAM
3480: 5f 45 52 52 4f 52 3b 0a 20 20 20 20 73 20 3d 20 _ERROR;. s =
3490: 73 74 72 6d 2d 3e 73 74 61 74 65 3b 0a 0a 20 20 strm->state;..
34a0: 20 20 69 66 20 28 6c 65 76 65 6c 20 3d 3d 20 5a if (level == Z
34b0: 5f 44 45 46 41 55 4c 54 5f 43 4f 4d 50 52 45 53 _DEFAULT_COMPRES
34c0: 53 49 4f 4e 29 20 7b 0a 09 6c 65 76 65 6c 20 3d SION) {..level =
34d0: 20 36 3b 0a 20 20 20 20 7d 0a 20 20 20 20 69 66 6;. }. if
34e0: 20 28 6c 65 76 65 6c 20 3c 20 30 20 7c 7c 20 6c (level < 0 || l
34f0: 65 76 65 6c 20 3e 20 39 20 7c 7c 20 73 74 72 61 evel > 9 || stra
3500: 74 65 67 79 20 3c 20 30 20 7c 7c 20 73 74 72 61 tegy < 0 || stra
3510: 74 65 67 79 20 3e 20 5a 5f 48 55 46 46 4d 41 4e tegy > Z_HUFFMAN
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3530: 20 5a 5f 53 54 52 45 41 4d 5f 45 52 52 4f 52 3b Z_STREAM_ERROR;
3540: 0a 20 20 20 20 7d 0a 20 20 20 20 66 75 6e 63 20 . }. func
3550: 3d 20 63 6f 6e 66 69 67 75 72 61 74 69 6f 6e 5f = configuration_
3560: 74 61 62 6c 65 5b 73 2d 3e 6c 65 76 65 6c 5d 2e table[s->level].
3570: 66 75 6e 63 3b 0a 0a 20 20 20 20 69 66 20 28 66 func;.. if (f
3580: 75 6e 63 20 21 3d 20 63 6f 6e 66 69 67 75 72 61 unc != configura
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35b0: 74 6f 74 61 6c 5f 69 6e 20 21 3d 20 30 29 20 7b total_in != 0) {
35c0: 0a 09 2f 2a 20 46 6c 75 73 68 20 74 68 65 20 6c ../* Flush the l
35d0: 61 73 74 20 62 75 66 66 65 72 3a 20 2a 2f 0a 09 ast buffer: */..
35e0: 65 72 72 20 3d 20 64 65 66 6c 61 74 65 28 73 74 err = deflate(st
35f0: 72 6d 2c 20 5a 5f 50 41 52 54 49 41 4c 5f 46 4c rm, Z_PARTIAL_FL
3600: 55 53 48 29 3b 0a 20 20 20 20 7d 0a 20 20 20 20 USH);. }.
3610: 69 66 20 28 73 2d 3e 6c 65 76 65 6c 20 21 3d 20 if (s->level !=
3620: 6c 65 76 65 6c 29 20 7b 0a 09 73 2d 3e 6c 65 76 level) {..s->lev
3630: 65 6c 20 3d 20 6c 65 76 65 6c 3b 0a 09 73 2d 3e el = level;..s->
3640: 6d 61 78 5f 6c 61 7a 79 5f 6d 61 74 63 68 20 20 max_lazy_match
3650: 20 3d 20 63 6f 6e 66 69 67 75 72 61 74 69 6f 6e = configuration
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3670: 78 5f 6c 61 7a 79 3b 0a 09 73 2d 3e 67 6f 6f 64 x_lazy;..s->good
3680: 5f 6d 61 74 63 68 20 20 20 20 20 20 20 3d 20 63 _match = c
3690: 6f 6e 66 69 67 75 72 61 74 69 6f 6e 5f 74 61 62 onfiguration_tab
36a0: 6c 65 5b 6c 65 76 65 6c 5d 2e 67 6f 6f 64 5f 6c le[level].good_l
36b0: 65 6e 67 74 68 3b 0a 09 73 2d 3e 6e 69 63 65 5f ength;..s->nice_
36c0: 6d 61 74 63 68 20 20 20 20 20 20 20 3d 20 63 6f match = co
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36e0: 65 5b 6c 65 76 65 6c 5d 2e 6e 69 63 65 5f 6c 65 e[level].nice_le
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3730: 6e 3b 0a 20 20 20 20 7d 0a 20 20 20 20 73 2d 3e n;. }. s->
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3760: 65 72 72 3b 0a 7d 0a 0a 2f 2a 20 3d 3d 3d 3d 3d err;.}../* =====
3770: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3780: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3790: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
37a0: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
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3860: 63 61 6c 20 76 6f 69 64 20 70 75 74 53 68 6f 72 cal void putShor
3870: 74 4d 53 42 20 28 73 2c 20 62 29 0a 20 20 20 20 tMSB (s, b).
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38a0: 20 20 20 20 70 75 74 5f 62 79 74 65 28 73 2c 20 put_byte(s,
38b0: 28 42 79 74 65 29 28 62 20 3e 3e 20 38 29 29 3b (Byte)(b >> 8));
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38e0: 29 29 3b 0a 7d 20 20 20 0a 0a 2f 2a 20 3d 3d 3d ));.} ../* ===
38f0: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3900: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3910: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3920: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3930: 3d 3d 3d 3d 3d 3d 0a 20 2a 20 46 6c 75 73 68 20 ======. * Flush
3940: 61 73 20 6d 75 63 68 20 70 65 6e 64 69 6e 67 20 as much pending
3950: 6f 75 74 70 75 74 20 61 73 20 70 6f 73 73 69 62 output as possib
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3970: 29 20 6f 75 74 70 75 74 20 67 6f 65 73 0a 20 2a ) output goes. *
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3990: 6e 63 74 69 6f 6e 20 73 6f 20 73 6f 6d 65 20 61 nction so some a
39a0: 70 70 6c 69 63 61 74 69 6f 6e 73 20 6d 61 79 20 pplications may
39b0: 77 69 73 68 20 74 6f 20 6d 6f 64 69 66 79 20 69 wish to modify i
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39d0: 6c 6f 63 61 74 69 6e 67 20 61 20 6c 61 72 67 65 locating a large
39e0: 20 73 74 72 6d 2d 3e 6e 65 78 74 5f 6f 75 74 20 strm->next_out
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3a10: 53 65 65 20 61 6c 73 6f 20 72 65 61 64 5f 62 75 See also read_bu
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3a30: 76 6f 69 64 20 66 6c 75 73 68 5f 70 65 6e 64 69 void flush_pendi
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3a60: 20 20 20 75 6e 73 69 67 6e 65 64 20 6c 65 6e 20 unsigned len
3a70: 3d 20 73 74 72 6d 2d 3e 73 74 61 74 65 2d 3e 70 = strm->state->p
3a80: 65 6e 64 69 6e 67 3b 0a 0a 20 20 20 20 69 66 20 ending;.. if
3a90: 28 6c 65 6e 20 3e 20 73 74 72 6d 2d 3e 61 76 61 (len > strm->ava
3aa0: 69 6c 5f 6f 75 74 29 20 6c 65 6e 20 3d 20 73 74 il_out) len = st
3ab0: 72 6d 2d 3e 61 76 61 69 6c 5f 6f 75 74 3b 0a 20 rm->avail_out;.
3ac0: 20 20 20 69 66 20 28 6c 65 6e 20 3d 3d 20 30 29 if (len == 0)
3ad0: 20 72 65 74 75 72 6e 3b 0a 0a 20 20 20 20 7a 6d return;.. zm
3ae0: 65 6d 63 70 79 28 73 74 72 6d 2d 3e 6e 65 78 74 emcpy(strm->next
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3b10: 6c 65 6e 29 3b 0a 20 20 20 20 73 74 72 6d 2d 3e len);. strm->
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3b60: 2d 3e 74 6f 74 61 6c 5f 6f 75 74 20 2b 3d 20 6c ->total_out += l
3b70: 65 6e 3b 0a 20 20 20 20 73 74 72 6d 2d 3e 61 76 en;. strm->av
3b80: 61 69 6c 5f 6f 75 74 20 20 2d 3d 20 6c 65 6e 3b ail_out -= len;
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3c00: 73 74 61 74 65 2d 3e 70 65 6e 64 69 6e 67 5f 62 state->pending_b
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3c20: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3c30: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3c40: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3c50: 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d ================
3c60: 3d 3d 3d 3d 3d 3d 3d 3d 3d 20 2a 2f 0a 69 6e 74 ========= */.int
3c70: 20 5a 45 58 50 4f 52 54 20 64 65 66 6c 61 74 65 ZEXPORT deflate
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3c90: 20 20 20 7a 5f 73 74 72 65 61 6d 70 20 73 74 72 z_streamp str
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3d00: 64 65 66 6c 61 74 65 5f 73 74 61 74 65 20 2a 73 deflate_state *s
3d10: 3b 0a 0a 20 20 20 20 69 66 20 28 73 74 72 6d 20 ;.. if (strm
3d20: 3d 3d 20 5a 5f 4e 55 4c 4c 20 7c 7c 20 73 74 72 == Z_NULL || str
3d30: 6d 2d 3e 73 74 61 74 65 20 3d 3d 20 5a 5f 4e 55 m->state == Z_NU
3d40: 4c 4c 20 7c 7c 0a 09 66 6c 75 73 68 20 3e 20 5a LL ||..flush > Z
3d50: 5f 46 49 4e 49 53 48 20 7c 7c 20 66 6c 75 73 68 _FINISH || flush
3d60: 20 3c 20 30 29 20 7b 0a 20 20 20 20 20 20 20 20 < 0) {.
3d70: 72 65 74 75 72 6e 20 5a 5f 53 54 52 45 41 4d 5f return Z_STREAM_
3d80: 45 52 52 4f 52 3b 0a 20 20 20 20 7d 0a 20 20 20 ERROR;. }.
3d90: 20 73 20 3d 20 73 74 72 6d 2d 3e 73 74 61 74 65 s = strm->state
3da0: 3b 0a 0a 20 20 20 20 69 66 20 28 73 74 72 6d 2d ;.. if (strm-
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3dc0: 55 4c 4c 20 7c 7c 0a 20 20 20 20 20 20 20 20 28 ULL ||. (
3dd0: 73 74 72 6d 2d 3e 6e 65 78 74 5f 69 6e 20 3d 3d strm->next_in ==
3de0: 20 5a 5f 4e 55 4c 4c 20 26 26 20 73 74 72 6d 2d Z_NULL && strm-
3df0: 3e 61 76 61 69 6c 5f 69 6e 20 21 3d 20 30 29 20 >avail_in != 0)
3e00: 7c 7c 0a 09 28 73 2d 3e 73 74 61 74 75 73 20 3d ||..(s->status =
3e10: 3d 20 46 49 4e 49 53 48 5f 53 54 41 54 45 20 26 = FINISH_STATE &
3e20: 26 20 66 6c 75 73 68 20 21 3d 20 5a 5f 46 49 4e & flush != Z_FIN
3e30: 49 53 48 29 29 20 7b 0a 20 20 20 20 20 20 20 20 ISH)) {.
3e40: 45 52 52 5f 52 45 54 55 52 4e 28 73 74 72 6d 2c ERR_RETURN(strm,
3e50: 20 5a 5f 53 54 52 45 41 4d 5f 45 52 52 4f 52 29 Z_STREAM_ERROR)
3e60: 3b 0a 20 20 20 20 7d 0a 20 20 20 20 69 66 20 28 ;. }. if (
3e70: 73 74 72 6d 2d 3e 61 76 61 69 6c 5f 6f 75 74 20 strm->avail_out
3e80: 3d 3d 20 30 29 20 45 52 52 5f 52 45 54 55 52 4e == 0) ERR_RETURN
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6eb0: 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 .
6ec0: 20 20 2a 28 75 73 68 66 2a 29 28 73 63 61 6e 2b *(ushf*)(scan+
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6ee0: 6d 61 74 63 68 2b 3d 32 29 20 26 26 0a 20 20 20 match+=2) &&.
6ef0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2a 28 *(
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70e0: 20 20 20 20 20 20 6d 61 74 63 68 5b 62 65 73 74 match[best
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72d0: 20 20 20 20 20 73 63 61 6e 20 2b 3d 20 32 2c 20 scan += 2,
72e0: 6d 61 74 63 68 2b 2b 3b 0a 20 20 20 20 20 20 20 match++;.
72f0: 20 41 73 73 65 72 74 28 2a 73 63 61 6e 20 3d 3d Assert(*scan ==
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7d20: 2c 20 6d 61 74 63 68 20 2b 3d 20 32 3b 0a 20 20 , match += 2;.
7d30: 20 20 41 73 73 65 72 74 28 2a 73 63 61 6e 20 3d Assert(*scan =
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7d50: 5b 32 5d 3f 22 29 3b 0a 0a 20 20 20 20 2f 2a 20 [2]?");.. /*
7d60: 57 65 20 63 68 65 63 6b 20 66 6f 72 20 69 6e 73 We check for ins
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7de0: 64 6f 20 7b 0a 20 20 20 20 7d 20 77 68 69 6c 65 do {. } while
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7e00: 6d 61 74 63 68 20 26 26 20 2a 2b 2b 73 63 61 6e match && *++scan
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7e20: 09 20 20 20 20 20 2a 2b 2b 73 63 61 6e 20 3d 3d . *++scan ==
7e30: 20 2a 2b 2b 6d 61 74 63 68 20 26 26 20 2a 2b 2b *++match && *++
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7e50: 20 26 26 0a 09 20 20 20 20 20 2a 2b 2b 73 63 61 &&.. *++sca
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7e70: 20 2a 2b 2b 73 63 61 6e 20 3d 3d 20 2a 2b 2b 6d *++scan == *++m
7e80: 61 74 63 68 20 26 26 0a 09 20 20 20 20 20 2a 2b atch &&.. *+
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7ea0: 68 20 26 26 20 2a 2b 2b 73 63 61 6e 20 3d 3d 20 h && *++scan ==
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