#include "misc.h"

#include <stdio.h>

#include <stdarg.h>

#include <string.h>

#include <assert.h>

char strbuf[512];

void fpcrtl_assert(int i)

{

    if(!i){

        assert(0);

    }

}

// EFFECTS: return the nearest integer of the given number

int fpcrtl_round(double number)

{

    return (number >= 0) ? (int)(number + 0.5) : (int)(number - 0.5);

}

void fpcrtl_printf(const char* format, ...)

{

#ifdef FPCRTL_DEBUG

    va_list args;

    va_start (args, format);

    vprintf (format, args);

    va_end (args);

#endif

}

//

//void fpcrtl_check_string(string255 str)

//{

//#ifdef FPCRTL_DEBUG

//    int len = strlen(str.str);

//    if(len != str.len){

//        printf("String %s internal inconsistency error. Length should be %d but actually is %d.\n", str.str, len, str.len);

//    }

//    //assert(len == str.len);

//#endif

//}

string255 fpcrtl_strconcat(string255 str1, string255 str2)

{

    //printf("str1 = %d, %d\n", str1.len, strlen(str1.str));

    //printf("str2 = %d, %d\n", str2.len, strlen(str2.str));

#ifdef FPCRTL_DEBUG

    if(str1.len + (int)(str2.len) > 255){

        printf("String overflow\n");

        printf("str1(%d): %s\nstr2(%d): %s\n", str1.len, str1.str, str2.len, str2.str);

        printf("String will be truncated.\n");

        strbuf[0] = 0;

        strcpy(strbuf, str1.str);

        strcat(strbuf, str2.str);

        memcpy(str1.str, strbuf, 255);

        str1.str[254] = 0;

        return str1;

    }

#endif

    memcpy(&(str1.str[str1.len]), str2.str, str2.len);

    str1.str[str1.len + str2.len] = 0;

    str1.len += str2.len;

    return str1;

}

string255 fpcrtl_strappend(string255 s, char c)

{

    s.str[s.len] = c;

    s.str[s.len + 1] = 0;

    s.len ++;

    return s;

}

string255 fpcrtl_strprepend(char c, string255 s)

{

    FIX_STRING(s);

    memmove(s.str + 1, s.str, s.len + 1); // also move '/0'

    s.str[0] = c;

    s.len++;

    return s;

}

string255 fpcrtl_chrconcat(char a, char b)

{

    string255 result;

    result.len = 2;

    result.str[0] = a;

    result.str[1] = b;

    result.str[2] = 0;

    return result;

}

bool fpcrtl_strcompare(string255 str1, string255 str2)

{

    //printf("str1 = %d, %d\n", str1.len, strlen(str1.str));

    //printf("str2 = %d, %d\n", str2.len, strlen(str2.str));

    FIX_STRING(str1);

    FIX_STRING(str2);

    if(strcmp(str1.str, str2.str) == 0){

        return true;

    }

    return false;

}

bool fpcrtl_strcomparec(string255 a, char b)

{

    FIX_STRING(a);

    if(a.len == 1 && a.str[0] == b){

        return true;

    }

    return false;

}

bool fpcrtl_strncompare(string255 a, string255 b)

{

    return !fpcrtl_strcompare(a, b);

}

//char* fpcrtl_pchar(string255 s)

//{

//    return s.str;

//}

string255 fpcrtl_pchar2str(char *s)

{

    string255 result;

    int t = strlen(s);

    if(t > 255){

        printf("pchar2str, length > 255\n");

        assert(0);

    }

    result.len = t;

    memcpy(result.str, s, t);

    result.str[t] = 0;

    return result;

}

string255 fpcrtl_make_string(const char* s) {

    string255 result;

    strcpy(result.str, s);

    result.len = strlen(s);

    return result;

}

#ifdef EMSCRIPTEN

GLenum glewInit()

{

    return GLEW_OK;

}

#endif