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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <limits.h>
#include "config.h"
#include "sayeth.h"
extern char wspace;
extern struct Driver **drivers;
extern size_t drivers_alloc;
extern size_t drivers_used;
/***
* Repeat a character
* @param ch character to repeat
* @param limit number of times to repeat
*/
void repchar(char ch, size_t limit) {
while (limit > 0) {
putc(ch, stdout);
limit--;
}
}
/***
* Find the longest line in a string
* @param s the string
* @return longest line
*/
size_t get_longest_line(char *s) {
size_t *lengths;
size_t len;
size_t linecount;
size_t longest;
char *ch = s;
linecount = 0;
while (*ch != '\0') {
if (*ch == '\n')
linecount++;
ch++;
}
lengths = calloc(linecount + 1, sizeof(*lengths));
if (!lengths) {
return ULONG_MAX;
}
len = 0;
for (size_t i = 0, line = 0; i < strlen(s); i++) {
if (s[i] == '\n') {
lengths[line] = len;
line++;
len = 0;
continue;
}
len++;
}
longest = lengths[0];
for (size_t i = 0; i < linecount; i++) {
if (lengths[i] > longest) {
longest = lengths[i];
}
}
free(lengths);
return longest;
}
void usage(char *prog) {
printf("usage: %s [-d driver_name] [-w] [-] {input}\n"
"-h Show this help message\n"
"-d Driver name (fierrhea, jenkins, romero, doomguy, none)\n"
"-w Show indentation whitespace\n"
"\n"
"- Read from standard input\n"
"input A quoted string\n", prog);
}
int main(int argc, char *argv[]) {
char driver_name[255] = {0};
char input[INPUT_BUFSIZ] = {0};
struct Driver *driver = NULL;
char *driver_dir = getenv("SAYETH_DRIVERS");
if (!driver_dir) {
#ifdef DRIVER_DIR
driver_dir = strdup(DRIVER_DIR);
#else
driver_dir = strdup("./drivers");
#endif
}
// set default driver
strcpy(driver_name, "fierrhea");
int option;
while ((option = getopt (argc, argv, "hd:w")) != -1) {
switch (option) {
case 'h':
usage(argv[0]);
exit(0);
case 'd':
strcpy(driver_name, optarg);
break;
case 'w':
wspace = '.';
break;
case ':':
fprintf(stderr, "option requires value\n");
usage(argv[0]);
exit(1);
case '?':
fprintf(stderr, "unknown option: %c\n", optopt);
usage(argv[0]);
exit(1);
default:
usage(argv[0]);
exit(1);
}
}
DIR *dir;
struct dirent *dp;
dir = opendir(driver_dir);
if (!dir) {
perror(driver_dir);
exit(1);
}
while ((dp = readdir(dir)) != NULL) {
struct Driver *drv;
char path[PATH_MAX] = {0};
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, driver_dir)) {
continue;
}
if (!strstr(dp->d_name, ".art")) {
continue;
}
snprintf(path, sizeof(path) - 1, "%s/%s", driver_dir, dp->d_name);
drv = driver_load(path);
if (!drv) {
fprintf(stderr, "unable to load driver: %s (%s)\n", path, strerror(errno));
exit(1);
}
if (driver_register(drv) < 0) {
fprintf(stderr, "unable to register driver: %s (%s)\n", path, strerror(errno));
exit(1);
}
free(drv);
}
closedir(dir);
if (!drivers_used) {
fprintf(stderr, "No drivers present in '%s'?\n", driver_dir);
exit(1);
}
if (optind < argc) {
strcpy(input, argv[optind]);
} else {
fprintf(stderr, "Missing input string or standard input (`-`)\n");
usage(argv[0]);
exit(1);
}
if (input[0] == '-') {
fread(input, 1, sizeof(input) - 1, stdin);
}
if (input[strlen(input) - 1] != '\n') {
input[strlen(input)] = '\n';
}
driver = driver_lookup(driver_name);
if (!driver) {
fprintf(stderr, "Driver not found\n");
exit(1);
}
driver_run(driver, input);
puts("");
drivers_free();
free(driver_dir);
return 0;
}
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