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#include "hitomezashi_cli.h"
#include "SDL.h"
#define OPTPARSE_IMPLEMENTATION
#define OPTPARSE_API static
#include "hitomezashi.h"
#include "optparse/optparse.h"
#include <limits.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR, "Failed to initialise SDL: %s",
SDL_GetError());
return Hitomezashi_Cli_Exit_Code_Err_Sdl_Init;
}
char *out_file_path;
int x_pattern_len;
int y_pattern_len;
char *x_pattern;
char *y_pattern;
int gap;
int thickness;
hitomezashi_cli_handle_args(&out_file_path, &x_pattern_len, &y_pattern_len,
&x_pattern, &y_pattern, &gap, &thickness, argc,
argv);
struct Hitomezashi_State state;
if (hitomezashi_state_init(&state, x_pattern_len, y_pattern_len, x_pattern,
y_pattern, gap, thickness) != 0) {
return Hitomezashi_Cli_Exit_Code_Err_State_Init;
}
hitomezashi_draw(&state);
if (SDL_SaveBMP(state.surface, out_file_path) != 0) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR, "Failed to save image");
return Hitomezashi_Cli_Exit_Code_Err_Save_Image;
}
SDL_FreeSurface(state.surface);
free(state.x_pattern);
free(state.y_pattern);
SDL_Quit();
}
// Attempts to prints help. Exits 0 on success, 2 on failure.
void hitomezashi_cli_help(void) {
if (puts("hitomezashi_cli - generate hitomezashi patterns\n"
"Options:\n"
"-o - specify the output image (BMP) path\n"
"-x - specify the x pattern as a string of zeroes and ones (eg. "
"0101)\n"
"-y - specify the y pattern, as with -x\n"
"-g - specify the gap between lines as an integer\n"
"-t - specify the line thickness as an integer\n"
"-h - print this help and exit") < 0) {
exit(Hitomezashi_Cli_Exit_Code_Err_Print_Help);
}
exit(Hitomezashi_Cli_Exit_Code_Success);
}
char *hitomezashi_cli_ascii_binary_str_to_ints(char *ascii_str, size_t n) {
char *res = malloc(n);
for (int i = 0; i < n; ++i) {
switch (ascii_str[i]) {
case '0':;
res[i] = 0;
break;
case '1':;
res[i] = 1;
break;
default:;
free(res);
return NULL;
}
}
return res;
}
// Parses arguments with xgetopt, ensures they are valid, initialises various
// variables based on them. Prints and exits if it encounters an error.
void hitomezashi_cli_handle_args(char **out_file_path, int *x_pattern_len,
int *y_pattern_len, char **x_pattern,
char **y_pattern, int *gap, int *thickness,
int argc, char **argv) {
bool out_file_path_specified = false;
bool x_pattern_specified = false;
bool y_pattern_specified = false;
bool gap_specified = false;
bool thickness_specified = false;
struct optparse options;
optparse_init(&options, argv);
int option;
while ((option = optparse(&options, ":o:x:y:g:t:h")) != -1) {
switch (option) {
case 'o':;
*out_file_path = options.optarg;
out_file_path_specified = true;
break;
case 'x':;
size_t x_pattern_len_l = strlen(options.optarg);
if (x_pattern_len_l >= INT_MAX) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR,
"X pattern length must be shorter than %d", INT_MAX);
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
*x_pattern_len = x_pattern_len_l;
*x_pattern = hitomezashi_cli_ascii_binary_str_to_ints(options.optarg,
*x_pattern_len);
if (!*x_pattern) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR, "Invalid x pattern; see -h");
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
x_pattern_specified = true;
break;
case 'y':;
size_t y_pattern_len_l = strlen(options.optarg);
if (y_pattern_len_l >= INT_MAX) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR,
"Y pattern length must be shorter than %d", INT_MAX);
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
*y_pattern_len = y_pattern_len_l;
*y_pattern = hitomezashi_cli_ascii_binary_str_to_ints(options.optarg,
*y_pattern_len);
if (!*y_pattern) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR, "Invalid y pattern; see -h");
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
y_pattern_specified = true;
break;
case 'g':;
long gap_l = strtol(options.optarg, NULL, 0);
if (gap_l <= 0 || gap_l >= INT_MAX) {
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR,
"Value for gap must be positive and less than %d",
INT_MAX);
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
*gap = gap_l;
gap_specified = true;
break;
case 't':;
long thickness_l = strtol(options.optarg, NULL, 0);
if (thickness_l <= 0 || thickness_l >= INT_MAX) {
SDL_LogCritical(
SDL_LOG_CATEGORY_ERROR,
"Value for line thickness must be positive and less than %d",
INT_MAX);
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
*thickness = thickness_l;
thickness_specified = true;
break;
case 'h':;
hitomezashi_cli_help();
break;
default:;
SDL_LogCritical(SDL_LOG_CATEGORY_ERROR,
"Invalid argument: run with -h for help");
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
}
if (!(out_file_path_specified && x_pattern_specified && y_pattern_specified &&
gap_specified && thickness_specified)) {
SDL_LogCritical(
SDL_LOG_CATEGORY_ERROR,
"-o, -x, -y, -g, -t *must* be specified; run with -h for help");
exit(Hitomezashi_Cli_Exit_Code_Err_Handle_Args);
}
}
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