nanocoat/src/util.c

   1 /* -*- Mode: C; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the Mozilla Public License Version 2.0.
   7 // See license.mkd for licensing and copyright information.
   8 // -------------------------------------------------------------------------*/
   9
  10 #include "sjme/nvm.h"
  11 #include "sjme/util.h"
  12 #include "sjme/debug.h"
  13
  14 sjme_jchar sjme_decodeUtfChar(const char* at, const char** stringP)
  15 {
  16         if (at == NULL)
  17                 return -1;
  18
  19         sjme_todo("sjme_decodeUtfChar()");
  20         return -1;
  21 }
  22
  23 /**
  24  * Initializes the random number generator.
  25  *
  26  * @param outRandom The random state to initialize.
  27  * @param seedHi The high seed value.
  28  * @param seedLo The low seed value.
  29  * @return Returns @c SJME_JNI_TRUE on success.
  30  * @since 2023/12/02
  31  */
  32 sjme_jboolean sjme_randomInit(
  33         sjme_attrInOutNotNull sjme_random* outRandom,
  34         sjme_attrInValue sjme_jint seedHi,
  35         sjme_attrInValue sjme_jint seedLo)
  36 {
  37         sjme_todo("Implement this?");
  38         return SJME_JNI_FALSE;
  39 }
  40
  41 sjme_jboolean sjme_randomInitL(
  42         sjme_attrInOutNotNull sjme_random* outRandom,
  43         sjme_attrInValue sjme_jlong seed)
  44 {
  45         sjme_todo("Implement this?");
  46         return SJME_JNI_FALSE;
  47 }
  48
  49 sjme_jboolean sjme_randomNextInt(
  50         sjme_attrInOutNotNull sjme_random* random,
  51         sjme_attrOutNotNull sjme_jint* outValue)
  52 {
  53         sjme_todo("Implement this?");
  54         return SJME_JNI_FALSE;
  55 }
  56
  57 sjme_jboolean sjme_randomNextIntMax(
  58         sjme_attrInOutNotNull sjme_random* random,
  59         sjme_attrOutNotNull sjme_jint* outValue,
  60         sjme_attrInPositiveNonZero sjme_jint maxValue)
  61 {
  62         sjme_todo("Implement this?");
  63         return SJME_JNI_FALSE;
  64 }
  65
  66 sjme_jint sjme_stringHash(const char* string)
  67 {
  68         sjme_jint result;
  69         sjme_jchar c;
  70         const char* p;
  71
  72         if (string == NULL)
  73                 return 0;
  74
  75         /* Initial result. */
  76         result = 0;
  77
  78         /* Read until end of string. */
  79         for (p = string; *p != 0;)
  80         {
  81                 /* Decode character. */
  82                 c = sjme_decodeUtfChar(p, &p);
  83
  84                 /* Calculate the hashCode(), the JavaDoc gives the following formula:
  85                 // == s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1] .... yikes! */
  86                 result = ((result << 5) - result) + (sjme_jint)c;
  87         }
  88
  89         /* Return calculated result. */
  90         return result;
  91 }
  92
  93 sjme_jint sjme_stringLength(const char* string)
  94 {
  95         if (string == NULL)
  96                 return -1;
  97
  98         sjme_todo("sjme_stringLength()");
  99         return -1;
 100 }
 101
 102 sjme_jint sjme_treeFind(void* in, void* what,
 103         const sjme_treeFindFunc* functions)
 104 {
 105         if (in == NULL || functions == NULL)
 106                 return -1;
 107
 108         sjme_todo("sjme_treeFind()");
 109         return -1;
 110 }