diff options
Diffstat (limited to '3rdparty/lzma/CPP/Common/StringToInt.cpp')
-rw-r--r-- | 3rdparty/lzma/CPP/Common/StringToInt.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/3rdparty/lzma/CPP/Common/StringToInt.cpp b/3rdparty/lzma/CPP/Common/StringToInt.cpp new file mode 100644 index 00000000000..15474a4223d --- /dev/null +++ b/3rdparty/lzma/CPP/Common/StringToInt.cpp @@ -0,0 +1,97 @@ +// Common/StringToInt.cpp + +#include "StdAfx.h" + +#include "StringToInt.h" + +UInt64 ConvertStringToUInt64(const char *s, const char **end) +{ + UInt64 result = 0; + for (;;) + { + char c = *s; + if (c < '0' || c > '9') + { + if (end != NULL) + *end = s; + return result; + } + result *= 10; + result += (c - '0'); + s++; + } +} + +UInt64 ConvertOctStringToUInt64(const char *s, const char **end) +{ + UInt64 result = 0; + for (;;) + { + char c = *s; + if (c < '0' || c > '7') + { + if (end != NULL) + *end = s; + return result; + } + result <<= 3; + result += (c - '0'); + s++; + } +} + +UInt64 ConvertHexStringToUInt64(const char *s, const char **end) +{ + UInt64 result = 0; + for (;;) + { + char c = *s; + UInt32 v; + if (c >= '0' && c <= '9') v = (c - '0'); + else if (c >= 'A' && c <= 'F') v = 10 + (c - 'A'); + else if (c >= 'a' && c <= 'f') v = 10 + (c - 'a'); + else + { + if (end != NULL) + *end = s; + return result; + } + result <<= 4; + result |= v; + s++; + } +} + + +UInt64 ConvertStringToUInt64(const wchar_t *s, const wchar_t **end) +{ + UInt64 result = 0; + for (;;) + { + wchar_t c = *s; + if (c < '0' || c > '9') + { + if (end != NULL) + *end = s; + return result; + } + result *= 10; + result += (c - '0'); + s++; + } +} + + +Int64 ConvertStringToInt64(const char *s, const char **end) +{ + if (*s == '-') + return -(Int64)ConvertStringToUInt64(s + 1, end); + return ConvertStringToUInt64(s, end); +} + +Int64 ConvertStringToInt64(const wchar_t *s, const wchar_t **end) +{ + if (*s == L'-') + return -(Int64)ConvertStringToUInt64(s + 1, end); + return ConvertStringToUInt64(s, end); +} |