#include "lexer.h"
#define HTML_BALISE_LEN 12
typedef struct Cursor {
int chunk;
int offset;
} Cursor;
Cursor cursor = {
.chunk = 0,
.offset = -1,
};
Cursor prev = {
.chunk = 0,
.offset = -2,
};
void increment_cursor(Cursor* cur){
if (cur->offset+1 < 0){
printf("init prev cursor.\n");
cur->offset++;
return;
}
if (page.chunks[cur->chunk][cur->offset+1] == '\0'){
cur->chunk++;
cur->offset = 0;
} else {
cur->offset++;
}
}
char* nextchar(void){
increment_cursor(&cursor);
increment_cursor(&prev);
if (cursor.chunk >= page.len){
return NULL;
}
return &page.chunks[cursor.chunk][cursor.offset];
}
void go_back(void){
cursor.chunk = prev.chunk;
cursor.offset = prev.offset;
prev.offset--;
printf("got back mf.\n");
if (cursor.chunk < 0 || cursor.offset < 0){
printf("chunk = %d | offset= %d\n", cursor.chunk, cursor.offset);
puts("ERROR: go way too back.");
exit(1);
}
}
TokenType token_by_name(const char name[HTML_BALISE_LEN]){
if (name == NULL){
return UNDEFINED_TYPE;
} else if (strncmp(name, "body", HTML_BALISE_LEN) == 0){
return BODY;
} else if (strncmp(name, "/body", HTML_BALISE_LEN) == 0){
return END_BODY;
} else if (strncmp(name, "ul", HTML_BALISE_LEN) == 0){
return UL;
} else if (strncmp(name, "li", HTML_BALISE_LEN) == 0){
return LI;
} else if (strncmp(name, "h1", HTML_BALISE_LEN) == 0){
return H1;
} else if (strncmp(name, "h2", HTML_BALISE_LEN) == 0){
return H2;
} else if (strncmp(name, "h3", HTML_BALISE_LEN) == 0){
return H3;
} else if (strncmp(name, "h4", HTML_BALISE_LEN) == 0){
return H4;
} else if (strncmp(name, "h5", HTML_BALISE_LEN) == 0){
return H5;
} else if (strncmp(name, "h6", HTML_BALISE_LEN) == 0){
return H6;
}
return DONT_CARE;
}
Token* nexttoken(void){
Token* token = NULL;
static char* cursor = NULL;
cursor = nextchar();
while (*cursor == '\n'){
printf("new line skipped.\n");
cursor = nextchar();
}
if (*cursor != '<'){
int i = 0;
do {
cursor = nextchar();
i++;
printf("text: '%c'.\n", *cursor);
} while (*cursor != '<');
go_back();
token = malloc(sizeof(Token));
token->type = TEXT;
token->value = "TODO";
token->len = i;
} else if (*cursor == '<'){
char balise[HTML_BALISE_LEN] = {0};
int len = 0;
cursor = nextchar();
while (*cursor != '>' && *cursor != ' ' && len < HTML_BALISE_LEN){
balise[len] = *cursor;
len++;
printf("balise: '%c'.\n", *cursor);
cursor = nextchar();
}
token = malloc(sizeof(Token));
token->type = token_by_name(balise);
token->value = malloc(sizeof(char) * len);
strncpy(token->value, balise, len+1);
token->len = len;
do {
cursor = nextchar();
printf("skip: '%c'.\n", *cursor);
} while (*cursor != '>');
}
return token;
}
void printtoken(Token* token){
if (token == NULL){
puts("NULL TOKEN");
return;
}
switch (token->type) {
case UNDEFINED_TYPE:
printf("UNDEFINED_TYPE: ");
break;
case DONT_CARE:
printf("DONT_CARE: ");
break;
case TEXT:
printf("TEXT: ");
break;
case BODY:
printf("BODY: ");
break;
case END_BODY:
printf("END_BODY: ");
break;
case UL:
printf("UL: ");
break;
case LI:
printf("LI: ");
break;
case H1:
printf("H1: ");
break;
case H2:
printf("H2: ");
break;
case H3:
printf("H3: ");
break;
case H4:
printf("H4: ");
break;
case H5:
printf("H5: ");
break;
case H6:
printf("H6: ");
break;
default:
printf("ERROR: UNKNOWN TOKEN: ");
break;
}
if (token->value == NULL){
puts("'NO VALUE FOUND'");
return;
}
printf("'%s'\n", token->value);
}
#if 0
https://n3m0.fr/fr/
#endif