1 | #ifndef lint |
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2 | static char *RCSid = "$Revision: 1.1.1.3 $"; |
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3 | #endif |
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4 | |
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5 | #ifndef lint |
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6 | static char sccsid[] = "@(#)strcasecmp.c 1.1 89/05/19 SMI"; /* from UCB 1.3 8/3/87 */ |
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7 | #endif |
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8 | |
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9 | /* |
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10 | * Copyright (c) 1992-1998 Michael A. Cooper. |
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11 | * This software may be freely used and distributed provided it is not |
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12 | * sold for profit or used in part or in whole for commercial gain |
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13 | * without prior written agreement, and the author is credited |
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14 | * appropriately. |
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15 | */ |
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16 | |
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17 | /* |
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18 | * This array is designed for mapping upper and lower case letter |
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19 | * together for a case independent comparison. The mappings are |
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20 | * based upon ascii character sequences. |
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21 | */ |
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22 | static char charmap[] = { |
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23 | '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', |
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24 | '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', |
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25 | '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', |
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26 | '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', |
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27 | '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', |
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28 | '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', |
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29 | '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', |
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30 | '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', |
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31 | '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', |
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32 | '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', |
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33 | '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', |
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34 | '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', |
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35 | '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', |
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36 | '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', |
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37 | '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', |
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38 | '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177', |
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39 | '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207', |
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40 | '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217', |
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41 | '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227', |
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42 | '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237', |
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43 | '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247', |
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44 | '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257', |
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45 | '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267', |
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46 | '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277', |
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47 | '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347', |
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48 | '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', |
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49 | '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', |
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50 | '\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337', |
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51 | '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347', |
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52 | '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', |
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53 | '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', |
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54 | '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377', |
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55 | }; |
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56 | |
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57 | strcasecmp(s1, s2) |
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58 | register char *s1, *s2; |
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59 | { |
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60 | register char *cm = charmap; |
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61 | |
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62 | while (cm[*s1] == cm[*s2++]) |
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63 | if (*s1++ == '\0') |
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64 | return(0); |
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65 | return(cm[*s1] - cm[*--s2]); |
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66 | } |
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67 | |
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68 | strncasecmp(s1, s2, n) |
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69 | register char *s1, *s2; |
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70 | register int n; |
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71 | { |
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72 | register char *cm = charmap; |
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73 | |
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74 | while (--n >= 0 && cm[*s1] == cm[*s2++]) |
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75 | if (*s1++ == '\0') |
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76 | return(0); |
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77 | return(n < 0 ? 0 : cm[*s1] - cm[*--s2]); |
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78 | } |
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