#include <stdio.h>
#include <stdlib.h>
#include <string.h>



inline int starts_with_seven_spaces(const char* line) {
for (int i = 0;i<7;++i) {
	if (line[i] != ' ') return 0;
}

return 1;
}

inline int is_upper_case(char a, char b) {
  const auto a_ = 'A';
  const auto b_ = 'Z';

 return (a >= a_ && a_ <= b_ && b >= a_ && b <= b_);
}

void  get(int indent_, char** argv) {
	const char* indent = "\t\t\t\t\t\t\t";
	(void)indent_;
	(void)indent;

	(void)argv;

	char*buf  = (char*)calloc(1024, 1);
sprintf(buf, "man 2 %s 3 %s 2>/dev/null", argv[1], argv[1]);
puts(buf);

FILE*         o = popen(buf, "r");
/*putchar(getc(o));
putchar(getc(o));
putchar(getc(o));
putchar(getc(o));
putchar(getc(o));
putchar(getc(o));*/


	const size_t size_ = 4096;
char* input=(char*)malloc(size_ + 1);
if (!input)
	puts("Error");
size_t ret, size=size_;
while ((size += ret = fread(input+size-size_,1, size_,o), ret ==size_)) {
//printf("%d %d\n", size, ret);
input = (char*)realloc(input,size + 1);
if (!input) puts("ERR");

}
input[size = size-size_] = '\0';
//}
//printf("ret %d\n",   ret);
//printf("%d %d\n", size, ret);
char* ptr1 = strstr(input,   "ERRORS");
if (ptr1 == 0) ptr1 = input;
ptr1 += 6;
while (*ptr1 == '\n') ++ptr1;

char* ptr2 = strstr(ptr1,      "CONFORMING");
if (!ptr2) ptr2=input + strlen(input) - 1;
//if (ptr2 == 0)ptr2 = 

--ptr2; char* ptr3 = ptr2;    


while (*ptr2 == ' ' || *ptr2 == '\n' || *ptr2 == '\t')  --ptr2; // --ptr1;
++ptr2;
*ptr2 = 0;

ptr2 = ptr1;
while ((ptr2=strstr(ptr2,   "       "))) {
while (*ptr2 == ' ') ++ptr2;
//*ptr
*(int*)(&ptr2[-5]) = *(int*)("case");
while (*ptr2 != ' ' && *ptr2 != '\n') ptr2++;
*ptr2 = ':';
//if (*ptr2 >= 'A' && 
/*--ptr2;
--ptr2;
--ptr2;
--ptr2;
--ptr2;
*(int*)ptr2 = *(int*)"case"; */
//*ptr2 = '%';


//*ptr2 = '%';
//puts("Found");
//next:;

}

//puts ("switch (errno) {");
//puts(ptr1);
//puts ("}");
FILE* a_ = popen("xclip -selection c", "w");
FILE* list[2] = {a_, stdout};

for (int i = 0;i<2; ++i) {
//FILE* const file = list[i];
fputs ("switch (errno) {\n", list[i]);
fwrite(ptr1,    ptr3         -        ptr1, 1, list[i]);
fputs ("\n}\n",list[i]); //, a);
}

//fclose(
fclose(a_);

fclose(o);
free(input);
//free(buf);





free(buf);



//return "";
//exit(0);
/*
  std::string txt;
  std::string cmd_plus_bracket = cmd + "(";
    
    for (const std::string& line : pystring::split("\n", input)) {
      if ( line.find(cmd_plus_bracket)!= std::string::npos) {
        auto cmd_ = pystring::split(line);
        txt += "do {"; // }
        txt += in_.c_str() + 2; //std::slice(in_, 2, in_.length() - 2, 1); //[2..];
        txt += cmd_[0];
        txt += ' ';
        txt += arg;
        txt += " = ";
        txt +=join(" ", cmd_.c_str()+1);
//        break

        break;
       }
}
auto pos_1_ = all_text.find("ERRORS");
    auto pos_2_ = all_text.find("CONFORMING");
    if (pos_1_ ==std::string::npos || !pos_2_ == std::string::npos) {
    return "";
    }
    i = all_text.substr(pos_1_ + 6..pos_2_ - pos_1_ - 6  );

      #  i = i["ERRORS".size..-"CONFORMING".size - 1]
      while (i[0] == '\n' || i[0]==' ') # '\t'
        i = i.substr(1, i.end());

      txt += "\n\n#{in_.substr(2, in_.end())}switch (errno)\n#{in_.substr(2,in_.end())}{\n\n/* from manpage"
      # item
      std::vector<std::vector<std::string>> items{};
      for (const auto& line : i.split("\n")) {
        if (line.length() >= 9 && starts_with_seven_spaces(line) && is_upper_case(line[8], line[9])) {
          a = split(line.substr(line.begin() + 7, line.end() - 1));   
          items.emplace_back(std::vector<std::string>{a[0]});
          b = 1;
          while (a.length() > b && a[b] == "or") {
            items[-1].emplace_back(a[b + 1]);
            b += 2;
          }
          c = a.substr(b, a.length() - b);
          txt << in_

          #          if items.size < 1 # [-2].nil?
          #           p = ""
          #        else
          p = items[-2].join(" or ") rescue ""
          #       end

          txt << "*" "/\n\t\twrite(2,   \"#{p}\",#{p.size});\nbreak;\n\n\n#{items[-1].map do |i|
                                                                    "#{in_[2..]}case #{i}:"
                                                                  end.join("\n")} /*#{c.join(' ')} "
          next
        }
        txt += line
      }
      txt += in_  ;
      txt += "*" "/" "\n\n\t\t" "default:" "\n";
      txt += in_;
txt += "\n\n";
txt += in_.c_str() + 2;
      }
  }
//  while txt.includes? "  "
  //  txt = txt.gsub "  ", " "
  //end
return txt + "\n}while (0);\n\n";
*/

  }

int main(int argc, char** argv) {
(void)argc;
//std::string 

//res   ;
(get(3, argv));

}