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7597 | akron1 | 1 | (* |
2 | BSD 2-Clause License |
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3 | |||
4 | Copyright (c) 2018, Anton Krotov |
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5 | All rights reserved. |
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6 | *) |
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7 | |||
8 | MODULE STRINGS; |
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9 | |||
10 | IMPORT UTILS; |
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11 | |||
12 | |||
13 | PROCEDURE append* (VAR s1: ARRAY OF CHAR; s2: ARRAY OF CHAR); |
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14 | VAR |
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15 | n1, n2, i, j: INTEGER; |
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16 | BEGIN |
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17 | n1 := LENGTH(s1); |
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18 | n2 := LENGTH(s2); |
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19 | |||
20 | ASSERT(n1 + n2 < LEN(s1)); |
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21 | |||
22 | i := 0; |
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23 | j := n1; |
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24 | WHILE i < n2 DO |
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25 | s1[j] := s2[i]; |
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26 | INC(i); |
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27 | INC(j) |
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28 | END; |
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29 | |||
30 | s1[j] := 0X |
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31 | |||
32 | END append; |
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33 | |||
34 | |||
35 | PROCEDURE reverse* (VAR s: ARRAY OF CHAR); |
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36 | VAR |
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37 | i, j: INTEGER; |
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38 | a, b: CHAR; |
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39 | |||
40 | BEGIN |
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41 | |||
42 | i := 0; |
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43 | j := LENGTH(s) - 1; |
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44 | |||
45 | WHILE i < j DO |
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46 | a := s[i]; |
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47 | b := s[j]; |
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48 | s[i] := b; |
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49 | s[j] := a; |
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50 | INC(i); |
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51 | DEC(j) |
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52 | END |
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53 | END reverse; |
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54 | |||
55 | |||
56 | PROCEDURE IntToStr* (x: INTEGER; VAR str: ARRAY OF CHAR); |
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57 | VAR |
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58 | i, a: INTEGER; |
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59 | minus: BOOLEAN; |
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60 | |||
61 | BEGIN |
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62 | IF x = UTILS.minint THEN |
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63 | IF UTILS.bit_depth = 32 THEN |
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64 | COPY("-2147483648", str) |
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65 | ELSIF UTILS.bit_depth = 64 THEN |
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66 | COPY("-9223372036854775808", str) |
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67 | END |
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68 | |||
69 | ELSE |
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70 | |||
71 | minus := x < 0; |
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72 | IF minus THEN |
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73 | x := -x |
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74 | END; |
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75 | i := 0; |
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76 | a := 0; |
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77 | REPEAT |
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78 | str[i] := CHR(x MOD 10 + ORD("0")); |
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79 | x := x DIV 10; |
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80 | INC(i) |
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81 | UNTIL x = 0; |
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82 | |||
83 | IF minus THEN |
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84 | str[i] := "-"; |
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85 | INC(i) |
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86 | END; |
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87 | |||
88 | str[i] := 0X; |
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89 | reverse(str) |
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90 | |||
91 | END |
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92 | END IntToStr; |
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93 | |||
94 | |||
95 | PROCEDURE copy* (src: ARRAY OF CHAR; VAR dst: ARRAY OF CHAR; spos, dpos, count: INTEGER); |
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96 | BEGIN |
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97 | WHILE count > 0 DO |
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98 | dst[dpos] := src[spos]; |
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99 | INC(spos); |
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100 | INC(dpos); |
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101 | DEC(count) |
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102 | END |
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103 | END copy; |
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104 | |||
105 | |||
106 | PROCEDURE search* (s: ARRAY OF CHAR; VAR pos: INTEGER; c: CHAR; forward: BOOLEAN); |
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107 | VAR |
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108 | length: INTEGER; |
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109 | |||
110 | BEGIN |
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111 | length := LENGTH(s); |
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112 | |||
113 | IF (0 <= pos) & (pos < length) THEN |
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114 | IF forward THEN |
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115 | WHILE (pos < length) & (s[pos] # c) DO |
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116 | INC(pos) |
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117 | END; |
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118 | IF pos = length THEN |
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119 | pos := -1 |
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120 | END |
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121 | ELSE |
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122 | WHILE (pos >= 0) & (s[pos] # c) DO |
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123 | DEC(pos) |
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124 | END |
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125 | END |
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126 | ELSE |
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127 | pos := -1 |
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128 | END |
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129 | END search; |
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130 | |||
131 | |||
132 | PROCEDURE letter* (c: CHAR): BOOLEAN; |
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133 | RETURN ("a" <= c) & (c <= "z") OR ("A" <= c) & (c <= "Z") OR (c = "_") |
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134 | END letter; |
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135 | |||
136 | |||
137 | PROCEDURE digit* (c: CHAR): BOOLEAN; |
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138 | RETURN ("0" <= c) & (c <= "9") |
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139 | END digit; |
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140 | |||
141 | |||
142 | PROCEDURE hexdigit* (c: CHAR): BOOLEAN; |
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143 | RETURN ("0" <= c) & (c <= "9") OR ("A" <= c) & (c <= "F") |
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144 | END hexdigit; |
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145 | |||
146 | |||
147 | PROCEDURE space* (c: CHAR): BOOLEAN; |
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148 | RETURN (0X < c) & (c <= 20X) |
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149 | END space; |
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150 | |||
151 | |||
152 | PROCEDURE StrToInt* (str: ARRAY OF CHAR; VAR x: INTEGER): BOOLEAN; |
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153 | VAR |
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154 | i, k: INTEGER; |
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155 | res: BOOLEAN; |
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156 | |||
157 | BEGIN |
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158 | res := TRUE; |
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159 | i := 0; |
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160 | x := 0; |
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161 | k := LENGTH(str); |
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162 | WHILE i < k DO |
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163 | IF digit(str[i]) THEN |
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164 | x := x * 10 + ORD(str[i]) - ORD("0") |
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165 | ELSE |
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166 | i := k; |
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167 | res := FALSE |
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168 | END; |
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169 | INC(i) |
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170 | END |
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171 | |||
172 | RETURN res |
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173 | END StrToInt; |
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174 | |||
175 | |||
176 | PROCEDURE CheckVer (str: ARRAY OF CHAR): BOOLEAN; |
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177 | VAR |
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178 | i, k: INTEGER; |
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179 | res: BOOLEAN; |
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180 | |||
181 | BEGIN |
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182 | k := LENGTH(str); |
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183 | res := k < LEN(str); |
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184 | |||
185 | IF res & digit(str[0]) THEN |
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186 | i := 0; |
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187 | WHILE (i < k) & digit(str[i]) DO |
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188 | INC(i) |
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189 | END; |
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190 | IF (i < k) & (str[i] = ".") THEN |
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191 | INC(i); |
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192 | IF i < k THEN |
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193 | WHILE (i < k) & digit(str[i]) DO |
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194 | INC(i) |
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195 | END |
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196 | ELSE |
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197 | res := FALSE |
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198 | END |
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199 | ELSE |
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200 | res := FALSE |
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201 | END; |
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202 | |||
203 | res := res & (i = k) |
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204 | ELSE |
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205 | res := FALSE |
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206 | END |
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207 | |||
208 | RETURN res |
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209 | END CheckVer; |
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210 | |||
211 | |||
212 | PROCEDURE StrToVer* (str: ARRAY OF CHAR; VAR major, minor: INTEGER): BOOLEAN; |
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213 | VAR |
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214 | i: INTEGER; |
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215 | res: BOOLEAN; |
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216 | |||
217 | BEGIN |
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218 | res := CheckVer(str); |
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219 | |||
220 | IF res THEN |
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221 | i := 0; |
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222 | minor := 0; |
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223 | major := 0; |
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224 | WHILE digit(str[i]) DO |
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225 | major := major * 10 + ORD(str[i]) - ORD("0"); |
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226 | INC(i) |
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227 | END; |
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228 | INC(i); |
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229 | WHILE digit(str[i]) DO |
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230 | minor := minor * 10 + ORD(str[i]) - ORD("0"); |
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231 | INC(i) |
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232 | END |
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233 | END |
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234 | |||
235 | RETURN res |
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236 | END StrToVer; |
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237 | |||
238 | |||
239 | PROCEDURE Utf8To16* (src: ARRAY OF CHAR; VAR dst: ARRAY OF WCHAR): INTEGER; |
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240 | VAR |
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241 | i, j, u, srclen, dstlen: INTEGER; |
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242 | c: CHAR; |
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243 | |||
244 | BEGIN |
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245 | srclen := LEN(src); |
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246 | dstlen := LEN(dst); |
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247 | i := 0; |
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248 | j := 0; |
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249 | WHILE (i < srclen) & (j < dstlen) & (src[i] # 0X) DO |
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250 | c := src[i]; |
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251 | CASE c OF |
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252 | |00X..7FX: |
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253 | u := ORD(c) |
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254 | |||
255 | |0C1X..0DFX: |
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256 | u := LSL(ORD(c) - 0C0H, 6); |
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257 | IF i + 1 < srclen THEN |
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258 | u := u + ROR(LSL(ORD(src[i + 1]), 26), 26); |
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259 | INC(i) |
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260 | END |
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261 | |||
262 | |0E1X..0EFX: |
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263 | u := LSL(ORD(c) - 0E0H, 12); |
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264 | IF i + 1 < srclen THEN |
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265 | u := u + ROR(LSL(ORD(src[i + 1]), 26), 20); |
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266 | INC(i) |
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267 | END; |
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268 | IF i + 1 < srclen THEN |
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269 | u := u + ROR(LSL(ORD(src[i + 1]), 26), 26); |
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270 | INC(i) |
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271 | END |
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272 | (* |
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273 | |0F1X..0F7X: |
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274 | |0F9X..0FBX: |
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275 | |0FDX: |
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276 | *) |
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277 | ELSE |
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278 | END; |
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279 | INC(i); |
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280 | dst[j] := WCHR(u); |
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281 | INC(j) |
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282 | END; |
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283 | IF j < dstlen THEN |
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284 | dst[j] := WCHR(0) |
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285 | END |
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286 | |||
287 | RETURN j |
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288 | END Utf8To16; |
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289 | |||
290 | |||
291 | END STRINGS.>>>>>>>>>>>>=>>=>=>=>=>=>=>=>=>=>=>>>=>>>>> |