Added simple WCSA

[SXSI/TextCollection.git] / swcsa / utils / valstring.c

diff --git a/swcsa/utils/valstring.c b/swcsa/utils/valstring.c
new file mode 100755 (executable)
index 0000000..d27c747
--- /dev/null
+++ b/swcsa/utils/valstring.c
@@ -0,0 +1,130 @@
+#include "valstring.h"
+#include <stdio.h>
+
+unsigned char  _Valid[256];
+unsigned char  _Invalid[256];
+
+unsigned char _toLow[256];
+
+
+#ifndef ValidCh
+
+ #define ValidCh(ch)  (isalnum(ch)) /* Teste de validacao        */   
+ #define InvalidCh(ch) (!ValidCh(ch))
+
+#endif
+
+
+
+
+void StartValid() {
+
+  unsigned x;
+
+  for(x=0;x<128;x++) {
+    if(ValidCh(x)) {
+      _Valid[x]=1;
+      _Invalid[x]=0;
+    }
+    else {
+      _Valid[x]=0;
+      _Invalid[x]=1;
+    }
+  }
+  for(x=128;x<256;x++) {
+    _Valid[x]=0;
+    _Invalid[x]=1;
+  }
+  
+  _Valid[0]=_Invalid[0]=0;
+
+  // Caracteres especiales (acentuados, dieresis...)
+  // Caracter 'ñ'
+  _Valid[241]=1;
+  _Invalid[241]=0;
+  // Caracter 'Ñ'
+  _Valid[209]=1;
+  _Invalid[209]=0;
+  // Caracter 'á'
+  _Valid[225]=1;
+  _Invalid[225]=0;
+  // Caracter 'é'
+  _Valid[233]=1;
+  _Invalid[233]=0;
+  // Caracter 'í'
+  _Valid[237]=1;
+  _Invalid[237]=0;
+  // Caracter 'ó'
+  _Valid[243]=1;
+  _Invalid[243]=0;
+  // Caracter 'ú'
+  _Valid[250]=1;
+  _Invalid[250]=0;
+  // Caracter 'Á'
+  _Valid[193]=1;
+  _Invalid[193]=0;
+  // Caracter 'É'
+  _Valid[201]=1;
+  _Invalid[201]=0;
+  // Caracter 'Í'
+  _Valid[205]=1;
+  _Invalid[205]=0;
+  // Caracter 'Ó'
+  _Valid[211]=1;
+  _Invalid[211]=0;
+  // Caracter 'Ú'
+  _Valid[218]=1;
+  _Invalid[218]=0;
+  // Caracter 'ü'
+  _Valid[252]=1;
+  _Invalid[252]=0;
+  // Caracter 'Ü'
+  _Valid[220]=1;
+  _Invalid[220]=0;
+      
+}
+
+
+
+
+void StartToLow() {
+       int i;
+       unsigned char c;
+       for (i=0;i<256;i++) {
+               c=i;
+               if( (c >= 'A') && (c <= 'Z') ){
+                       _toLow[i]= c+ 'a'-'A';
+               }
+               else if (!_Valid[c]) {
+                       _toLow[i]=c;    
+               }               
+               else {
+                       switch(c) {                     
+                               case 192: case 193: case 194: case 195: case 196: case 197: case 224: case 225: 
+                               case 226: case 227: case 228: case 229: 
+                                       c = 97; break;
+                       
+                               case 201: case 202: case 203: case 232: case 233: case 234: case 235: 
+                                       c = 101; break;
+                               
+                               case 204: case 205: case 206: case 207: case 236: case 237: case 238: case 239: 
+                                       c = 105; break;
+                               
+                               case 210: case 211: case 212: case 213: case 214: case 242: case 243: case 244: 
+                                         case 245: case 246: 
+                                       c = 111; break;
+                               
+                               case 217: case 218: case 219: case 220: case 249: case 250: case 251: case 252: 
+                                       c = 117; break;
+                               
+                               case 209: c = 241; break;
+                               
+                               case 138: case 154: c = 115; break;
+                               
+                               case 159: case 221: case 253: case 255: 
+                                       c = 121; break;                         
+                       }
+                       _toLow[i]=c;
+               }
+       }       
+}