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author | Mystery Man <unknown@mandriva.org> | 2005-04-05 19:41:54 +0000 |
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committer | Mystery Man <unknown@mandriva.org> | 2005-04-05 19:41:54 +0000 |
commit | 1d9a4b73a37c6e942f909c2d42ca13b5c47e8362 (patch) | |
tree | 5bab4266bc57a31d97ac6a8badc2ede721a42c9c /mdk-stage1/slang/slsearch.c | |
parent | 4691e29d1228b10abbe586c5ecb87ec9e13bd3ec (diff) | |
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This commit was manufactured by cvs2svn to create tag 'V10_2_20mdk'.V10_2_20mdk
Diffstat (limited to 'mdk-stage1/slang/slsearch.c')
-rw-r--r-- | mdk-stage1/slang/slsearch.c | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/mdk-stage1/slang/slsearch.c b/mdk-stage1/slang/slsearch.c deleted file mode 100644 index a9a427a7d..000000000 --- a/mdk-stage1/slang/slsearch.c +++ /dev/null @@ -1,239 +0,0 @@ -/* Copyright (c) 1992, 1999, 2001 John E. Davis - * This file is part of the S-Lang library. - * - * You may distribute under the terms of either the GNU General Public - * License or the Perl Artistic License. - */ -#include "slinclud.h" - -#include "slang.h" -#include "_slang.h" - -#ifdef upcase -# undef upcase -#endif - -#define upcase(ch) (cs ? ch : UPPER_CASE(ch)) - -static unsigned char *search_forward (register unsigned char *beg, - unsigned char *end, - unsigned char *key, - register int key_len, int cs, int *ind) -{ - register unsigned char char1; - unsigned char *pos; - int j, str_len; - register unsigned char ch; - register int db; - - str_len = (int) (end - beg); - if (str_len < key_len) return (NULL); - - if (key_len == 0) - return NULL; - - char1 = key[key_len - 1]; - beg += (key_len - 1); - - while(1) - { - if (cs) while (beg < end) - { - ch = *beg; - db = ind[(unsigned char) ch]; - if ((db < key_len) && (ch == char1)) break; - beg += db; /* ind[(unsigned char) ch]; */ - } - else while (beg < end) - { - ch = *beg; - db = ind[(unsigned char) ch]; - if ((db < key_len) && - (UPPER_CASE(ch) == char1)) break; - beg += db; /* ind[(unsigned char) ch]; */ - } - - if (beg >= end) return(NULL); - - pos = beg - (key_len - 1); - for (j = 0; j < key_len; j++) - { - ch = upcase(pos[j]); - if (ch != (unsigned char) key[j]) break; - } - - if (j == key_len) return(pos); - beg += 1; - } -} - -static unsigned char *search_backward (unsigned char *beg,unsigned char *end, - unsigned char *key, int key_len, - int cs, int *ind) -{ - unsigned char ch, char1; - int j, str_len, ofs; - - str_len = (int) (end - beg); - if (str_len < key_len) return (NULL); - - if (key_len == 0) - return NULL; - - /* end -= (key_len - 1); */ - end -= key_len; - - char1 = key[0]; - - while(1) - { - while ((beg <= end) && (ch = *end, ch = upcase(ch), ch != char1)) - { - ofs = ind[(unsigned char) ch]; -#ifdef __MSDOS__ - /* This is needed for msdos segment wrapping problems */ - if (beg + ofs > end) return(NULL); -#endif - end -= ofs; - } - if (beg > end) return(NULL); - for (j = 1; j < key_len; j++) - { - ch = upcase(end[j]); - if (ch != key[j]) break; - } - if (j == key_len) return(end); - end--; - } -} - -unsigned char *SLsearch (unsigned char *pmin, unsigned char *pmax, - SLsearch_Type *st) -{ - if (st->dir > 0) return search_forward (pmin, pmax, st->key, - st->key_len, st->cs, st->ind); - else return search_backward (pmin, pmax, st->key, - st->key_len, st->cs, st->ind); -} - -static int Case_Tables_Ok; - -int SLsearch_init (char *str, int dir, int cs, SLsearch_Type *st) -{ - int i, maxi; - register int max = strlen(str); - unsigned char *w, *work = st->key; - register int *indp, *indpm; - int *ind = st->ind; - - if (max >= (int) sizeof (st->key)) - { - SLang_doerror ("Search string too long."); - return -1; - } - - st->dir = dir; st->cs = cs; - - if (!Case_Tables_Ok) SLang_init_case_tables (); - - if (dir > 0) - { - w = work; - } - else - { - maxi = max - 1; - str = str + maxi; - w = work + maxi; - } - - /* for (i = 0; i < 256; i++) ind[i] = max; */ - indp = ind; indpm = ind + 256; - while (indp < indpm) - { - *indp++ = max; - *indp++ = max; - *indp++ = max; - *indp++ = max; - } - - i = 0; - if (cs) while (i < max) - { - i++; - maxi = max - i; - *w = *str; - ind[(unsigned char) *str] = maxi; - str += dir; w += dir; - } - else while (i < max) - { - i++; - maxi = max - i; - *w = UPPER_CASE(*str); - ind[(unsigned char) *w] = maxi; - ind[(unsigned char) LOWER_CASE(*str)] = maxi; - str += dir; w += dir; - } - - work[max] = 0; - st->key_len = max; - return max; -} - -/* 8bit clean upper and lowercase macros */ -unsigned char _SLChg_LCase_Lut[256]; -unsigned char _SLChg_UCase_Lut[256]; - -void SLang_define_case (int *u, int *l) -{ - unsigned char up = (unsigned char) *u, dn = (unsigned char) *l; - - _SLChg_LCase_Lut[up] = dn; - _SLChg_LCase_Lut[dn] = dn; - _SLChg_UCase_Lut[dn] = up; - _SLChg_UCase_Lut[up] = up; -} - -void SLang_init_case_tables (void) -{ - int i, j; - if (Case_Tables_Ok) return; - - for (i = 0; i < 256; i++) - { - _SLChg_UCase_Lut[i] = i; - _SLChg_LCase_Lut[i] = i; - } - - for (i = 'A'; i <= 'Z'; i++) - { - j = i + 32; - _SLChg_UCase_Lut[j] = i; - _SLChg_LCase_Lut[i] = j; - } -#ifdef PC_SYSTEM - /* Initialize for DOS code page 437. */ - _SLChg_UCase_Lut[135] = 128; _SLChg_LCase_Lut[128] = 135; - _SLChg_UCase_Lut[132] = 142; _SLChg_LCase_Lut[142] = 132; - _SLChg_UCase_Lut[134] = 143; _SLChg_LCase_Lut[143] = 134; - _SLChg_UCase_Lut[130] = 144; _SLChg_LCase_Lut[144] = 130; - _SLChg_UCase_Lut[145] = 146; _SLChg_LCase_Lut[146] = 145; - _SLChg_UCase_Lut[148] = 153; _SLChg_LCase_Lut[153] = 148; - _SLChg_UCase_Lut[129] = 154; _SLChg_LCase_Lut[154] = 129; - _SLChg_UCase_Lut[164] = 165; _SLChg_LCase_Lut[165] = 164; -#else - /* ISO Latin */ - for (i = 192; i <= 221; i++) - { - j = i + 32; - _SLChg_UCase_Lut[j] = i; - _SLChg_LCase_Lut[i] = j; - } - _SLChg_UCase_Lut[215] = 215; _SLChg_LCase_Lut[215] = 215; - _SLChg_UCase_Lut[223] = 223; _SLChg_LCase_Lut[223] = 223; - _SLChg_UCase_Lut[247] = 247; _SLChg_LCase_Lut[247] = 247; - _SLChg_UCase_Lut[255] = 255; _SLChg_LCase_Lut[255] = 255; -#endif - Case_Tables_Ok = 1; -} |