1 files changed, 131 insertions, 0 deletions

diff --git a/src/mt/charset.h b/src/mt/charset.h
new file mode 100644
index 0000000..84742b9
--- /dev/null
+++ b/src/mt/charset.h
@@ -0,0 +1,131 @@
+/*************************************************************************
+ *
+ * HTCd - Copyright (C) 1998-2006 Henrik Rydberg
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef CHARSETH
+#define CHARSETH
+
+#include <string.h>
+
+struct charset {
+  explicit charset(const char s[]) {
+    memset(negmap,0,256); while(*s) map[*s++]=1;
+  }
+  charset(char beg,char end) {
+    memset(negmap,0,256); while(beg<=end) map[beg++]=1;
+  }
+  int test(char c) const { return map[c]; }
+  int operator[](char c) const { return map[c]; }
+  char negmap[128],map[128];
+};
+
+inline charset operator|(const charset& a,const charset& b) {
+  charset c(a); for(int i=-127;i<128;i++) c.map[i]|=b.map[i]; return c;
+}
+inline charset operator|(const charset& a,char b) {
+  charset c(a); c.map[b]=(b!=0); return c;
+}
+inline charset operator|(char a,const charset& b) {
+  charset c(b); c.map[a]=(a!=0); return c;
+}
+inline charset operator&(const charset& a,const charset& b) {
+  charset c(a); for(int i=-127;i<128;i++) c.map[i]&=b.map[i]; return c;
+}
+inline charset operator^(const charset& a,const charset& b) {
+  charset c(a); for(int i=-127;i<128;i++) c.map[i]^=b.map[i]; return c;
+}
+inline charset operator-(const charset& a,const charset& b) {
+  charset c(a); for(int i=-127;i<128;i++) c.map[i]&=~b.map[i]; return c;
+}
+inline charset operator-(const charset& a,char b) {
+  charset c(a); c.map[b]=0; return c;
+}
+inline charset operator~(const charset& a) {
+  charset c(a); for(int i=-127;i<128;i++) c.map[i]=!c.map[i]; c.map[0]=0;
+  return c;
+}
+
+//////////////////////////////////////////////////////////////////////////
+
+struct charmap {
+  charmap() { for(int i=-127;i<128;i++) map[i]=i; }
+  charmap(const charset& a,const charset& b) {
+    for(int i=-127,j=-127;i<128;i++) {
+      if(a[i]) { while(j<128&&!b[j]) j++; map[i]=j++; }
+      else map[i]=i;
+    }
+  }
+  charmap(const charset& a,const char* b) {
+    for(int i=-127;i<128;i++) if(a[i]&&*b) map[i]=*b++; else map[i]=i;
+  }
+  char operator[](char c) const { return map[c]; }
+  char negmap[128],map[128];
+};
+
+inline charmap operator<<(const charmap& a,const charmap& b) {
+  charmap c(a);
+  for(int i=-127;i<128;i++) if(b.map[i]!=i) c.map[i]=b.map[i];
+  for(int i=-127;i<128;i++) c.map[i]=c.map[c.map[i]];
+  return c;
+}
+
+//////////////////////////////////////////////////////////////////////////
+
+struct bracket {
+  explicit bracket(const char s[]) { strncpy(&left,s,sizeof(bracket)); }
+  int test(char c) const { return c==left||c==right; }
+  char left,right,esc,end;
+};
+
+//////////////////////////////////////////////////////////////////////////
+
+const charset cset_spaces(" \t");
+const charset cset_newl("\r\n");
+const charset cset_ws=cset_spaces|cset_newl;
+const charset cset_printable(' ','~');
+const charset cset_digit('0','9');
+const charset cset_real=cset_digit|'.';
+const charset cset_sign("+-");
+const charset cset_lalpha('a','z');
+const charset cset_ualpha('A','Z');
+const charset cset_alpha=cset_lalpha|cset_ualpha;
+const charset cset_alphanum=cset_alpha|cset_digit;
+const charset cset_alphareal=cset_alpha|cset_real;
+const charset cset_lext1(-32,-10),cset_lext2(-8,-2);
+const charset cset_uext1(-64,-42),cset_uext2(-40,-34);
+const charset cset_liso=cset_lalpha|cset_lext1|cset_lext2;
+const charset cset_uiso=cset_ualpha|cset_uext1|cset_uext2;
+
+const charmap cset_ident;
+const charmap cset_leqv1(cset_lext1,"aaaaaaaceeeeiiiidnooooo");
+const charmap cset_leqv2(cset_lext2,"ouuuuyp");
+const charmap cset_ueqv1(cset_uext1,"AAAAAAACEEEEIIIIDNOOOOO");
+const charmap cset_ueqv2(cset_uext2,"OUUUUYP");
+
+const charmap cset_lcase(cset_uiso,cset_liso);
+const charmap cset_ucase(cset_liso,cset_uiso);
+const charmap cset_sim=cset_lcase<<cset_leqv1<<cset_leqv2;
+
+const bracket cset_quotes("\"\"\\");
+const bracket cset_indices("[]\\");
+const bracket cset_braces("{}\\");
+const bracket cset_para("()\\");
+const bracket cset_dollars("$$\\");
+const bracket cset_hooks("<>\\");
+
+#endif