decompile string_util

1 files changed, 691 insertions, 0 deletions

diff --git a/src/string_util.c b/src/string_util.c
new file mode 100644
index 000000000..e1129a5a5
--- /dev/null
+++ b/src/string_util.c
@@ -0,0 +1,691 @@
+#include "global.h"
+#include "string_util.h"
+#include "text.h"
+
+EWRAM_DATA u8 gUnknownStringVar[16] = {0};
+
+static const u8 sDigits[] = __("0123456789ABCDEF");
+
+static const s32 sPowersOfTen[] =
+{
+             1,
+            10,
+           100,
+          1000,
+         10000,
+        100000,
+       1000000,
+      10000000,
+     100000000,
+    1000000000,
+};
+
+extern u8 gExpandedPlaceholder_Empty[];
+extern u8 gExpandedPlaceholder_Kun[];
+extern u8 gExpandedPlaceholder_Chan[];
+extern u8 gExpandedPlaceholder_Sapphire[];
+extern u8 gExpandedPlaceholder_Ruby[];
+extern u8 gExpandedPlaceholder_Aqua[];
+extern u8 gExpandedPlaceholder_Magma[];
+extern u8 gExpandedPlaceholder_Archie[];
+extern u8 gExpandedPlaceholder_Maxie[];
+extern u8 gExpandedPlaceholder_Kyogre[];
+extern u8 gExpandedPlaceholder_Groudon[];
+extern u8 gExpandedPlaceholder_Red[];
+extern u8 gExpandedPlaceholder_Green[];
+
+u8 *StringCopy10(u8 *dest, const u8 *src)
+{
+    u8 i;
+    u32 limit = 10;
+
+    for (i = 0; i < limit; i++)
+    {
+        dest[i] = src[i];
+
+        if (dest[i] == EOS)
+            return &dest[i];
+    }
+
+    dest[i] = EOS;
+    return &dest[i];
+}
+
+u8 *StringGetEnd10(u8 *str)
+{
+    u8 i;
+    u32 limit = 10;
+
+    for (i = 0; i < limit; i++)
+        if (str[i] == EOS)
+            return &str[i];
+
+    str[i] = EOS;
+    return &str[i];
+}
+
+u8 *StringCopy7(u8 *dest, const u8 *src)
+{
+    s32 i;
+    s32 limit = 7;
+
+    for (i = 0; i < limit; i++)
+    {
+        dest[i] = src[i];
+
+        if (dest[i] == EOS)
+            return &dest[i];
+    }
+
+    dest[i] = EOS;
+    return &dest[i];
+}
+
+u8 *StringCopy(u8 *dest, const u8 *src)
+{
+    while (*src != EOS)
+    {
+        *dest = *src;
+        dest++;
+        src++;
+    }
+
+    *dest = EOS;
+    return dest;
+}
+
+u8 *StringAppend(u8 *dest, const u8 *src)
+{
+    while (*dest != EOS)
+        dest++;
+
+    return StringCopy(dest, src);
+}
+
+u8 *StringCopyN(u8 *dest, const u8 *src, u8 n)
+{
+    u16 i;
+
+    for (i = 0; i < n; i++)
+        dest[i] = src[i];
+
+    return &dest[n];
+}
+
+u8 *StringAppendN(u8 *dest, const u8 *src, u8 n)
+{
+    while (*dest != EOS)
+        dest++;
+
+    return StringCopyN(dest, src, n);
+}
+
+u16 StringLength(const u8 *str)
+{
+    u16 length = 0;
+
+    while (str[length] != EOS)
+        length++;
+
+    return length;
+}
+
+s32 StringCompare(const u8 *str1, const u8 *str2)
+{
+    while (*str1 == *str2)
+    {
+        if (*str1 == EOS)
+            return 0;
+        str1++;
+        str2++;
+    }
+
+    return *str1 - *str2;
+}
+
+s32 StringCompareN(const u8 *str1, const u8 *str2, u32 n)
+{
+    while (*str1 == *str2)
+    {
+        if (*str1 == EOS)
+            return 0;
+        str1++;
+        str2++;
+        if (--n == 0)
+            return 0;
+    }
+
+    return *str1 - *str2;
+}
+
+u8 *ConvertIntToDecimalStringN(u8 *dest, s32 value, enum StringConvertMode mode, u8 n)
+{
+    enum { WAITING_FOR_NONZERO_DIGIT, WRITING_DIGITS, WRITING_SPACES } state;
+    s32 powerOfTen;
+    s32 largestPowerOfTen = sPowersOfTen[n - 1];
+
+    state = WAITING_FOR_NONZERO_DIGIT;
+
+    if (mode == STR_CONV_MODE_RIGHT_ALIGN)
+        state = WRITING_SPACES;
+
+    if (mode == STR_CONV_MODE_LEADING_ZEROS)
+        state = WRITING_DIGITS;
+
+    for (powerOfTen = largestPowerOfTen; powerOfTen > 0; powerOfTen /= 10)
+    {
+        u8 *out;
+        u8 c;
+        u16 digit = value / powerOfTen;
+        s32 temp = value - (powerOfTen * digit);
+
+        if (state == WRITING_DIGITS)
+        {
+            out = dest++;
+
+            if (digit <= 9)
+                c = sDigits[digit];
+            else
+                c = CHAR_QUESTION_MARK;
+
+            *out = c;
+        }
+        else if (digit != 0 || powerOfTen == 1)
+        {
+            state = WRITING_DIGITS;
+            out = dest++;
+
+            if (digit <= 9)
+                c = sDigits[digit];
+            else
+                c = CHAR_QUESTION_MARK;
+
+            *out = c;
+        }
+        else if (state == WRITING_SPACES)
+        {
+            *dest++ = CHAR_SPACE;
+        }
+
+        value = temp;
+    }
+
+    *dest = EOS;
+    return dest;
+}
+
+u8 *ConvertIntToHexStringN(u8 *dest, s32 value, enum StringConvertMode mode, u8 n)
+{
+    enum { WAITING_FOR_NONZERO_DIGIT, WRITING_DIGITS, WRITING_SPACES } state;
+    u8 i;
+    s32 powerOfSixteen;
+    s32 largestPowerOfSixteen = 1;
+
+    for (i = 1; i < n; i++)
+        largestPowerOfSixteen *= 16;
+
+    state = WAITING_FOR_NONZERO_DIGIT;
+
+    if (mode == STR_CONV_MODE_RIGHT_ALIGN)
+        state = WRITING_SPACES;
+
+    if (mode == STR_CONV_MODE_LEADING_ZEROS)
+        state = WRITING_DIGITS;
+
+    for (powerOfSixteen = largestPowerOfSixteen; powerOfSixteen > 0; powerOfSixteen /= 16)
+    {
+        u8 *out;
+        u8 c;
+        u32 digit = value / powerOfSixteen;
+        s32 temp = value % powerOfSixteen;
+
+        if (state == WRITING_DIGITS)
+        {
+            out = dest++;
+
+            if (digit <= 0xF)
+                c = sDigits[digit];
+            else
+                c = CHAR_QUESTION_MARK;
+
+            *out = c;
+        }
+        else if (digit != 0 || powerOfSixteen == 1)
+        {
+            state = WRITING_DIGITS;
+            out = dest++;
+
+            if (digit <= 0xF)
+                c = sDigits[digit];
+            else
+                c = CHAR_QUESTION_MARK;
+
+            *out = c;
+        }
+        else if (state == WRITING_SPACES)
+        {
+            *dest++ = CHAR_SPACE;
+        }
+
+        value = temp;
+    }
+
+    *dest = EOS;
+    return dest;
+}
+
+u8 *StringExpandPlaceholders(u8 *dest, const u8 *src)
+{
+    for (;;)
+    {
+        u8 c = *src++;
+        u8 placeholderId;
+        u8 *expandedString;
+
+        switch (c)
+        {
+            case PLACEHOLDER_BEGIN:
+                placeholderId = *src++;
+                expandedString = GetExpandedPlaceholder(placeholderId);
+                dest = StringExpandPlaceholders(dest, expandedString);
+                break;
+            case EXT_CTRL_CODE_BEGIN:
+                *dest++ = c;
+                c = *src++;
+                *dest++ = c;
+
+                switch (c)
+                {
+                    case 0x07:
+                    case 0x09:
+                    case 0x0F:
+                    case 0x15:
+                    case 0x16:
+                    case 0x17:
+                    case 0x18:
+                        break;
+                    case 0x04:
+                        *dest++ = *src++;
+                    case 0x0B:
+                        *dest++ = *src++;
+                    default:
+                        *dest++ = *src++;
+                }
+                break;
+            case EOS:
+                *dest = EOS;
+                return dest;
+            case 0xFA:
+            case 0xFB:
+            case 0xFE:
+            default:
+                *dest++ = c;
+        }
+    }
+}
+
+u8 *StringBraille(u8 *dest, const u8 *src)
+{
+    u8 setBrailleFont[] = { 0xFC, 0x06, 0x06, 0xFF };
+    u8 gotoLine2[] = { 0xFE, 0xFC, 0x0E, 0x02, 0xFF };
+
+    dest = StringCopy(dest, setBrailleFont);
+
+    for (;;)
+    {
+        u8 c = *src++;
+
+        switch (c)
+        {
+            case EOS:
+                *dest = c;
+                return dest;
+            case 0xFE:
+                dest = StringCopy(dest, gotoLine2);
+                break;
+            default:
+                *dest++ = c;
+                *dest++ = c + 0x40;
+                break;
+        }
+    }
+}
+
+static u8 *ExpandPlaceholder_UnknownStringVar(void)
+{
+    return gUnknownStringVar;
+}
+
+static u8 *ExpandPlaceholder_PlayerName(void)
+{
+    return gSaveBlock2Ptr->playerName;
+}
+
+static u8 *ExpandPlaceholder_StringVar1(void)
+{
+    return gStringVar1;
+}
+
+static u8 *ExpandPlaceholder_StringVar2(void)
+{
+    return gStringVar2;
+}
+
+static u8 *ExpandPlaceholder_StringVar3(void)
+{
+    return gStringVar3;
+}
+
+static u8 *ExpandPlaceholder_KunChan(void)
+{
+    if (gSaveBlock2Ptr->playerGender == MALE)
+        return gExpandedPlaceholder_Kun;
+    else
+        return gExpandedPlaceholder_Chan;
+}
+
+static u8 *ExpandPlaceholder_RivalName(void)
+{
+    if (gSaveBlock1Ptr->rivalName[0] == EOS)
+    {
+        if (gSaveBlock2Ptr->playerGender == MALE)
+            return gExpandedPlaceholder_Green;
+        else
+            return gExpandedPlaceholder_Red;
+    }
+    else
+    {
+        return gSaveBlock1Ptr->rivalName;
+    }
+}
+
+static u8 *ExpandPlaceholder_Version(void)
+{
+    return gExpandedPlaceholder_Ruby;
+}
+
+static u8 *ExpandPlaceholder_Magma(void)
+{
+    return gExpandedPlaceholder_Magma;
+}
+
+static u8 *ExpandPlaceholder_Aqua(void)
+{
+    return gExpandedPlaceholder_Aqua;
+}
+
+static u8 *ExpandPlaceholder_Maxie(void)
+{
+    return gExpandedPlaceholder_Maxie;
+}
+
+static u8 *ExpandPlaceholder_Archie(void)
+{
+    return gExpandedPlaceholder_Archie;
+}
+
+static u8 *ExpandPlaceholder_Groudon(void)
+{
+    return gExpandedPlaceholder_Groudon;
+}
+
+static u8 *ExpandPlaceholder_Kyogre(void)
+{
+    return gExpandedPlaceholder_Kyogre;
+}
+
+u8 *GetExpandedPlaceholder(u32 id)
+{
+    typedef u8 *(*ExpandPlaceholderFunc)(void);
+
+    static const ExpandPlaceholderFunc funcs[] =
+    {
+        ExpandPlaceholder_UnknownStringVar,
+        ExpandPlaceholder_PlayerName,
+        ExpandPlaceholder_StringVar1,
+        ExpandPlaceholder_StringVar2,
+        ExpandPlaceholder_StringVar3,
+        ExpandPlaceholder_KunChan,
+        ExpandPlaceholder_RivalName,
+        ExpandPlaceholder_Version,
+        ExpandPlaceholder_Magma,
+        ExpandPlaceholder_Aqua,
+        ExpandPlaceholder_Maxie,
+        ExpandPlaceholder_Archie,
+        ExpandPlaceholder_Groudon,
+        ExpandPlaceholder_Kyogre,
+    };
+
+    if (id >= ARRAY_COUNT(funcs))
+        return gExpandedPlaceholder_Empty;
+    else
+        return funcs[id]();
+}
+
+u8 *StringFill(u8 *dest, u8 c, u16 n)
+{
+    u16 i;
+
+    for (i = 0; i < n; i++)
+        *dest++ = c;
+
+    *dest = EOS;
+    return dest;
+}
+
+u8 *StringCopyPadded(u8 *dest, const u8 *src, u8 c, u16 n)
+{
+    while (*src != EOS)
+    {
+        *dest++ = *src++;
+
+        if (n)
+            n--;
+    }
+
+    n--;
+
+    while (n != (u16)-1)
+    {
+        *dest++ = c;
+        n--;
+    }
+
+    *dest = EOS;
+    return dest;
+}
+
+u8 *StringFillWithTerminator(u8 *dest, u16 n)
+{
+    return StringFill(dest, EOS, n);
+}
+
+u8 *StringCopyN_Multibyte(u8 *dest, u8 *src, u32 n)
+{
+    u32 i;
+
+    for (i = n - 1; i != (u32)-1; i--)
+    {
+        if (*src == EOS)
+        {
+            break;
+        }
+        else
+        {
+            *dest++ = *src++;
+            if (*(src - 1) == 0xF9)
+                *dest++ = *src++;
+        }
+    }
+
+    *dest = EOS;
+    return dest;
+}
+
+u32 StringLength_Multibyte(u8 *str)
+{
+    u32 length = 0;
+
+    while (*str != EOS)
+    {
+        if (*str == 0xF9)
+            str++;
+        str++;
+        length++;
+    }
+
+    return length;
+}
+
+u8 *WriteColorChangeControlCode(u8 *dest, u32 colorType, u8 color)
+{
+    *dest = 0xFC;
+    dest++;
+
+    switch (colorType)
+    {
+    case 0:
+        *dest = 1;
+        dest++;
+        break;
+    case 1:
+        *dest = 3;
+        dest++;
+        break;
+    case 2:
+        *dest = 2;
+        dest++;
+        break;
+    }
+
+    *dest = color;
+    dest++;
+    *dest = EOS;
+    return dest;
+}
+
+u8 GetExtCtrlCodeLength(u8 code)
+{
+    static const u8 lengths[] =
+    {
+        1,
+        2,
+        2,
+        2,
+        4,
+        2,
+        2,
+        1,
+        2,
+        1,
+        1,
+        3,
+        2,
+        2,
+        2,
+        1,
+        3,
+        2,
+        2,
+        2,
+        2,
+        1,
+        1,
+        1,
+        1,
+    };
+
+    u8 length = 0;
+    if (code < ARRAY_COUNT(lengths))
+        length = lengths[code];
+    return length;
+}
+
+static const u8 *SkipExtCtrlCode(const u8 *s)
+{
+    while (*s == 0xFC)
+    {
+        s++;
+        s += GetExtCtrlCodeLength(*s);
+    }
+
+    return s;
+}
+
+s32 StringCompareWithoutExtCtrlCodes(const u8 *str1, const u8 *str2)
+{
+    s32 retVal = 0;
+
+    while (1)
+    {
+        str1 = SkipExtCtrlCode(str1);
+        str2 = SkipExtCtrlCode(str2);
+
+        if (*str1 > *str2)
+            break;
+
+        if (*str1 < *str2)
+        {
+            retVal = -1;
+            if (*str2 == 0xFF)
+                retVal = 1;
+        }
+
+        if (*str1 == 0xFF)
+            return retVal;
+
+        str1++;
+        str2++;
+    }
+
+    retVal = 1;
+
+    if (*str1 == 0xFF)
+        retVal = -1;
+
+    return retVal;
+}
+
+void ConvertInternationalString(u8 *s, u8 language)
+{
+    if (language == LANGUAGE_JAPANESE)
+    {
+        u8 i;
+
+        StripExtCtrlCodes(s);
+        i = StringLength(s);
+        s[i++] = 0xFC;
+        s[i++] = 22;
+        s[i++] = 0xFF;
+
+        i--;
+
+        while (i != (u8)-1)
+        {
+            s[i + 2] = s[i];
+            i--;
+        }
+
+        s[0] = 0xFC;
+        s[1] = 21;
+    }
+}
+
+void StripExtCtrlCodes(u8 *str)
+{
+    u16 srcIndex = 0;
+    u16 destIndex = 0;
+    while (str[srcIndex] != 0xFF)
+    {
+        if (str[srcIndex] == 0xFC)
+        {
+            srcIndex++;
+            srcIndex += GetExtCtrlCodeLength(str[srcIndex]);
+        }
+        else
+        {
+            str[destIndex++] = str[srcIndex++];
+        }
+    }
+    str[destIndex] = 0xFF;
+}