116 lines
2.4 KiB
C
116 lines
2.4 KiB
C
#include <ctype.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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/* TODO: sysexits.h */
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#define PROGRAM_NAME "wordle"
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#define DEFAULT_DICTIONARY_FILENAME "/usr/share/" PROGRAM_NAME "/dictionary.txt"
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#define DEFAULT_SOLUTIONS_FILENAME "/usr/share/" PROGRAM_NAME "/solutions.txt"
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#define WORD_LENGTH 5
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#define GUESSES 6
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int
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dictionary_has(char *s, int fd){
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char buf[WORD_LENGTH + 2];
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if(lseek(fd, 0, SEEK_SET) != 0){
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fprintf(stderr, "%s: Could not seek to the start of the"
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" dictionary (errno %d).\n", PROGRAM_NAME, errno
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);
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close(fd);
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exit(1);
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}
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/* unused, but just in case */
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buf[WORD_LENGTH + 1] = '\0';
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if(read(fd, buf, WORD_LENGTH + 1) < WORD_LENGTH)
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return 1;
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}
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int
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strisuint(char *s){
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while(*s != '\0')
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if(!isdigit(*(s++)))
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return 0;
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return 1;
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}
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void
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usage(char *name){
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fprintf(stderr, "Usage: %s [index] (-d [dictionary file])"
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" (-s [solutions file])\n", name
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);
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exit(1);
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}
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int main(int argc, char *argv[]){
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int c;
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int dictionary_fd;
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size_t i;
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size_t index;
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size_t j;
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FILE *solutions_file;
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char word[WORD_LENGTH + 1];
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/* arg parse */
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if(argc < 2)
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usage(argv[0] != NULL ? argv[0] : PROGRAM_NAME);
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while((c = getopt(argc, argv, "d:hs:")) != -1)
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switch(c){
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case 'd':
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dictionary_filename = optarg;
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break;
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case 's':
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solutions_filename = optarg;
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break;
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case 'h':
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usage(argv[0] != NULL ? argv[0] : PROGRAM_NAME);
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}
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if(!strisuint(argv[optind])){
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fprintf(stderr, "%s: index must be a number.\n",
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argv[0] != NULL ? argv[0] : PROGRAM_NAME
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);
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exit(1);
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}
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index = (size_t)atoi(argv[optind]);
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/* get word */
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if((solutions_file = fopen(solutions_filename, "rb")) == NULL){
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fprintf(stderr, "%s: %s: Error opening solutions file.\n",
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argv[0] != NULL ? argv[0] : PROGRAM_NAME, solutions_filename
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);
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exit(1);
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}
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i = j = 0;
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while((c = getc(solutions_file)) != EOF)
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if(i == index){
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if(j == WORD_LENGTH){
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word[WORD_LENGTH] = '\0';
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j = 0;
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break;
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}else
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word[j++] = c;
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}else
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i += c == '\n';
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if(j != '\0'){
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word[j] = '\0';
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fprintf(stderr, "%s: %s: Word is too few characters.\n",
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argv[0] != NULL ? argv[0] : PROGRAM_NAME, word
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);
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exit(1);
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}
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fclose(solutions_file);
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if(dictionary_fd = open(dictionary_filename, O_RDONLY) == NULL){
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fprintf(stderr, "%s: %s: Error opening dictionary file.\n",
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argv[0] != NULL ? argv[0] : PROGRAM_NAME, dictionary_filename
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);
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exit(1);
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}
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close(dictionary_fd);
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exit(0);
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}
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