text: #define WOB_FILE "parse.c"
  
  #include <errno.h>
  #include <stdint.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include "parse.h"
  
  bool
  wob_parse_color(const char *restrict str, char **restrict str_end, struct wob_color *color)
  {
  	if (str[0] != '#') {
  		return false;
  	}
  	str += 1;
  
  	uint8_t parts[4];
  	for (size_t i = 0; i < (sizeof(parts) / sizeof(uint8_t)); ++i) {
  		char *strtoul_end;
  		char buffer[3] = {0};
  
  		strncpy(buffer, &str[i * 2], 2);
  		parts[i] = strtoul(buffer, &strtoul_end, 16);
  		if (strtoul_end != buffer + 2) {
  			return false;
  		}
  	}
  
  	*color = (struct wob_color){
  		.alpha = parts[0] / ((float) UINT8_MAX),
  		.red = parts[1] / ((float) UINT8_MAX),
  		.green = parts[2] / ((float) UINT8_MAX),
  		.blue = parts[3] / ((float) UINT8_MAX),
  	};
  
  	if (str_end) {
  		*str_end = ((char *) str) + sizeof("FFFFFFFF") - 1;
  	}
  
  	return true;
  }
  
  bool
  wob_parse_input(const char *input_buffer, unsigned long *percentage, struct wob_color *background_color, struct wob_color *border_color, struct wob_color *bar_color)
  {
  	char *input_ptr, *newline_position, *str_end;
  
  	newline_position = strchr(input_buffer, '\n');
  	if (newline_position == NULL) {
  		return false;
  	}
  
  	if (newline_position == input_buffer) {
  		return false;
  	}
  
  	*percentage = strtoul(input_buffer, &input_ptr, 10);
  	if (input_ptr == newline_position) {
  		return true;
  	}
  
  	struct wob_color *colors_to_parse[3] = {
  		background_color,
  		border_color,
  		bar_color,
  	};
  
  	for (size_t i = 0; i < sizeof(colors_to_parse) / sizeof(struct wob_color *); ++i) {
  		if (input_ptr[0] != ' ') {
  			return false;
  		}
  		input_ptr += 1;
  
  		if (!wob_parse_color(input_ptr, &str_end, colors_to_parse[i])) {
  			return false;
  		}
  
  		input_ptr = str_end;
  	}
  
  	return input_ptr == newline_position;
  }
  