diff --git a/src/stdlib/SDL_string.c b/src/stdlib/SDL_string.c index 1f55b51bf..5ca6526ff 100644 --- a/src/stdlib/SDL_string.c +++ b/src/stdlib/SDL_string.c @@ -1413,12 +1413,36 @@ SDL_PrintString(char *text, size_t maxlen, SDL_FormatInfo *info, const char *str return length; } +static void +SDL_IntPrecisionAdjust(char *num, size_t maxlen, SDL_FormatInfo *info) +{/* left-pad num with zeroes, if needed. */ + size_t sz, pad, i; + + if (!info || info->precision < 0) + return; + + if (*num == '-') + ++num; + sz = SDL_strlen(num); + if (sz < (size_t)info->precision) { + pad = (size_t)info->precision - sz; + if (pad + sz + 1 <= maxlen) { /* otherwise ignore the precision */ + SDL_memmove(num + pad, num, sz + 1); + for(i = 0; i < pad; ++i) { + num[i] = '0'; + } + } + } + info->precision = -1;/* so that SDL_PrintString() doesn't make a mess. */ +} + static size_t SDL_PrintLong(char *text, size_t maxlen, SDL_FormatInfo *info, long value) { char num[130]; SDL_ltoa(value, num, info ? info->radix : 10); + SDL_IntPrecisionAdjust(num, maxlen, info); return SDL_PrintString(text, maxlen, info, num); } @@ -1428,6 +1452,7 @@ SDL_PrintUnsignedLong(char *text, size_t maxlen, SDL_FormatInfo *info, unsigned char num[130]; SDL_ultoa(value, num, info ? info->radix : 10); + SDL_IntPrecisionAdjust(num, maxlen, info); return SDL_PrintString(text, maxlen, info, num); } @@ -1437,6 +1462,7 @@ SDL_PrintLongLong(char *text, size_t maxlen, SDL_FormatInfo *info, Sint64 value) char num[130]; SDL_lltoa(value, num, info ? info->radix : 10); + SDL_IntPrecisionAdjust(num, maxlen, info); return SDL_PrintString(text, maxlen, info, num); } @@ -1446,6 +1472,7 @@ SDL_PrintUnsignedLongLong(char *text, size_t maxlen, SDL_FormatInfo *info, Uint6 char num[130]; SDL_ulltoa(value, num, info ? info->radix : 10); + SDL_IntPrecisionAdjust(num, maxlen, info); return SDL_PrintString(text, maxlen, info, num); }