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#include <stdio.h>
#include <stdlib.h>
#include "mpc.h"
char *read_file(char *filename) {
char *input = malloc(BUFSIZ);
unsigned int size = 0;
FILE *f = fopen(filename, "r");
if (!f) {
printf("Could not open \"%s\" for reading", filename);
exit(1);
}
unsigned int read = 0;
while ( (read = fread(input, 1, BUFSIZ, f)) > 0) {
size += read;
input = realloc(input, size + BUFSIZ);
}
fclose(f);
input[size] = '\0';
return input;
}
int main() {
mpc_parser_t *Symbol = mpc_new("symbol");
mpc_parser_t *Text = mpc_new("text");
mpc_parser_t *Var_Open = mpc_new("var_open");
mpc_parser_t *Var_Close = mpc_new("var_close");
mpc_parser_t *Var = mpc_new("var");
mpc_parser_t *Block_Open = mpc_new("block_open");
mpc_parser_t *Block_Close = mpc_new("block_close");
mpc_parser_t *Block = mpc_new("block");
mpc_parser_t *For = mpc_new("for");
mpc_parser_t *Content = mpc_new("content");
mpc_parser_t *Template = mpc_new("template");
mpca_lang(MPCA_LANG_DEFAULT,
" symbol : /[a-zA-Z._]+/ ;"
" var_open : \"{{\" ;"
" var_close : \"}}\" ;"
" var : <var_open> <symbol> <var_close> ;"
" block_open: \"{%\" ;"
" block_close: \"%}\" ;"
" for : <block_open> \"for\" <symbol> \"in\" <symbol> <block_close> <content>* <block_open> \"endfor\" <block_close> ;"
" text : /[^{][^{%]*/ ;"
" content : <var> | <for> | <text>;"
" template : /^/ <content>* /$/ ;",
Symbol, Var_Open, Var_Close, Var, Block_Open, Block_Close, For, Text, Content, Template, NULL);
char *content = read_file("index.tpl");
mpc_result_t r;
if (mpc_parse("input", content, Template, &r)) {
mpc_ast_print(r.output);
mpc_ast_delete(r.output);
} else {
mpc_err_print(r.error);
mpc_err_delete(r.error);
}
mpc_cleanup(11, Symbol, Var_Open, Var_Close, Var, Block_Open, Block_Close, For, Block, Text, Content, Template);
free(content);
}
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