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#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include "aplwc_repl.h"
int
main(int argc, char *argv[])
{
struct aplwc *aplwc;
struct aplwc_line *line;
struct aplwc_value *value;
uint8_t *data;
char *input, *src;
int ret, exit_code, line_number;
size_t memsize, input_size, src_size, i;
int opt, xflag, input_file;
long tmp;
FILE *f;
input = NULL;
line = NULL;
value = NULL;
xflag = 0;
input_file = 0;
exit_code = 0;
line_number = 0;
while((opt = getopt(argc, argv, "x")) != -1){
switch(opt){
case 'x':
xflag = 1;
break;
default:
usage:
fprintf(stderr, "Usage: %s [-x] [file]\n", argv[0]);
return 1;
}
}
if((optind+1) == argc){
input_file = 1;
f = fopen(argv[optind], "r");
if(f == NULL){
fprintf(stderr, "Could not open file: %s: %s\n", argv[optind], strerror(errno));
return 1;
}
}else if(optind == argc)
f = stdin;
else
goto usage;
memsize = getenv_ulong("APLWC_MEM", APLWC_MIN_MEM);
data = malloc(memsize);
if(data == NULL){
fprintf(stderr, "Couldn't allocate memory\n");
return 1;
}
ret = aplwc_new(&aplwc, data, memsize);
if(ret){
fprintf(stderr, "Couldn't create new aplwc instance: %s\n", aplwc_errstr_rc(ret));
free(data);
return 1;
}
if(input_file){
if(fseek(f, 0, SEEK_END)){
file_size:
fprintf(stderr, "Failed to determine file size\n");
return 1;
}
tmp = ftell(f);
if(tmp < 0)
goto file_size;
input_size = tmp;
rewind(f);
input = malloc(input_size);
if(input == NULL){
fprintf(stderr, "Failed to allocate space for file contents\n");
return 1;
}
if(fread(input, 1, input_size, f) < input_size){
fprintf(stderr, "Failed to read file contents\n");
return 1;
}
fclose(f);
src = input;
src_size = input_size;
if((input_size > 2) && (input[0] == '#') && (input[1] == '!')){
for(i = 0; i < input_size; i++){
if(input[i] == '\n'){
src += i;
src_size -= i;
xflag = 1;
break;
}
}
}
ret = aplwc_load_module(aplwc, "Main", src, src_size);
if(ret){
fprintf(stderr, "Couldn't load Main module from file %s: %s\n", argv[optind], aplwc_errstr_rc(ret));
return 1;
}
free(input);
}
if(xflag)
goto exit;
for(;;){
if(input)
free(input);
if(line)
aplwc_free_line(line);
if(value)
aplwc_free_value(value);
input = NULL;
if(getline(&input, &input_size, stdin) < 0){
free(input);
break;
}else{
line_number++;
line = aplwc_read(aplwc, input);
if(line == NULL){
line_error:
fprintf(stderr, "error on line %d: %s: %s\n", line_number, aplwc_errstr(aplwc), input);
if(input_file){
exit_code = 1;
goto exit;
}
continue;
}
value = aplwc_eval(line);
if(value == NULL)
goto line_error;
fprintf(stdout, "%s\n", aplwc_value_string(value));
}
}
exit:
if(input)
free(input);
if(line)
aplwc_free_line(line);
if(value)
aplwc_free_value(value);
aplwc_destroy(aplwc);
free(data);
return exit_code;
}
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