static int ft_modlen(const char *s, int (*is_x)(char))
{
int i;
i = 0;
while (!is_x(s[i]) && s[i] != 0)
i++;
return (i);
}
static int ft_todo(const char *s, int (*is_x)(char))
{
int i;
int cp;
i = 0;
cp = 0;
while (s[i] != 0)
{
if (!is_x(s[i]))
{
cp++;
while (!is_x(s[i]) && s[i] != 0)
i++;
}
if (s[i] != 0)
i++;
}
return (cp);
}
int regex_parser::process_escape(const char *re, int ptr, int_set *chars){
if (ptr==strlen(re)){
return (++ptr);
//fatal("regex_parser:: process_escape: \\ in last position.");
}
char c=re[ptr];
int next;
if(is_x(c)){
if(ptr>strlen(re)-3)
fatal("regex_parser::process_escape: invalid hex escape sequence.");
else if (!is_hex_digit(re[ptr+1]) || !is_hex_digit(re[ptr+2]))
fatal("regex_parser::process_escape: invalid hex escape sequence.");
else{
char tmp[5];
tmp[0]='0';tmp[1]=c;tmp[2]=re[ptr+1];tmp[3]=re[ptr+2]; tmp[4]='\0';
sscanf(tmp,"0x%x", &next);
chars->insert(next);
ptr=ptr+3;
}
}else if (is_oct_digit(c)){
if(ptr>strlen(re)-3)
{next=escaped(c);ptr++;chars->insert(next);} //normal escape sequence
else if (!is_oct_digit(re[ptr+1]) || !is_oct_digit(re[ptr+2]))
{next=escaped(c);ptr++;chars->insert(next);} //normal escape sequence
else{
//really an octal sequence!
char tmp[5];
tmp[0]='0';tmp[1]=c;tmp[2]=re[ptr+1];tmp[3]=re[ptr+2]; tmp[4]='\0';
sscanf(tmp,"0%o", &next);
chars->insert(next);
ptr=ptr+3;
}
}else if(c=='s'){
chars->insert('\t');
chars->insert('\n');
chars->insert('\r');
chars->insert('\x0C');
chars->insert('\x20');
ptr++;
}else if(c=='S'){
chars->insert('\t');
chars->insert('\n');
chars->insert('\r');
chars->insert('\x0C');
chars->insert('\x20');
chars->negate();
ptr++;
}else if(c=='d'){
chars->insert('0');chars->insert('1');chars->insert('2');
chars->insert('3');chars->insert('4');chars->insert('5');
chars->insert('6');chars->insert('7');chars->insert('8');
chars->insert('9');
ptr++;
}else if(c=='D'){
chars->insert('0');chars->insert('1');chars->insert('2');
chars->insert('3');chars->insert('4');chars->insert('5');
chars->insert('6');chars->insert('7');chars->insert('8');
chars->insert('9');
chars->negate();
ptr++;
}else if(c=='w'){
chars->insert('_');
chars->insert('0');chars->insert('1');chars->insert('2');
chars->insert('3');chars->insert('4');chars->insert('5');
chars->insert('6');chars->insert('7');chars->insert('8');
chars->insert('9');
chars->insert('a');chars->insert('b');chars->insert('c');
chars->insert('d');chars->insert('e');chars->insert('f');
chars->insert('g');chars->insert('h');chars->insert('i');
chars->insert('j');chars->insert('k');chars->insert('l');
chars->insert('m');chars->insert('n');chars->insert('o');
chars->insert('p');chars->insert('q');chars->insert('r');
chars->insert('s');chars->insert('t');chars->insert('u');
chars->insert('v');chars->insert('w');chars->insert('x');
chars->insert('y');chars->insert('z');
chars->insert('A');chars->insert('B');chars->insert('C');
chars->insert('D');chars->insert('E');chars->insert('F');
chars->insert('G');chars->insert('H');chars->insert('I');
chars->insert('J');chars->insert('K');chars->insert('L');
chars->insert('M');chars->insert('N');chars->insert('O');
chars->insert('P');chars->insert('Q');chars->insert('R');
chars->insert('S');chars->insert('T');chars->insert('U');
chars->insert('V');chars->insert('W');chars->insert('X');
chars->insert('Y');chars->insert('Z');
ptr++;
}else if(c=='W'){
chars->insert('_');
chars->insert('0');chars->insert('1');chars->insert('2');
chars->insert('3');chars->insert('4');chars->insert('5');
chars->insert('6');chars->insert('7');chars->insert('8');
chars->insert('9');
chars->insert('a');chars->insert('b');chars->insert('c');
chars->insert('d');chars->insert('e');chars->insert('f');
chars->insert('g');chars->insert('h');chars->insert('i');
chars->insert('j');chars->insert('k');chars->insert('l');
chars->insert('m');chars->insert('n');chars->insert('o');
chars->insert('p');chars->insert('q');chars->insert('r');
chars->insert('s');chars->insert('t');chars->insert('u');
chars->insert('v');chars->insert('w');chars->insert('x');
chars->insert('y');chars->insert('z');
chars->insert('A');chars->insert('B');chars->insert('C');
chars->insert('D');chars->insert('E');chars->insert('F');
chars->insert('G');chars->insert('H');chars->insert('I');
chars->insert('J');chars->insert('K');chars->insert('L');
chars->insert('M');chars->insert('N');chars->insert('O');
chars->insert('P');chars->insert('Q');chars->insert('R');
chars->insert('S');chars->insert('T');chars->insert('U');
chars->insert('V');chars->insert('W');chars->insert('X');
chars->insert('Y');chars->insert('Z');
chars->negate();
ptr++;
}else{
next=escaped(c);
chars->insert(next);
ptr++;
}
return ptr;
}