Mercurial > vba-clojure
annotate src/win32/7zip/7z/CPP/Common/StringToInt.cpp @ 1:f9f4f1b99eed
importing src directory
| author | Robert McIntyre <rlm@mit.edu> |
|---|---|
| date | Sat, 03 Mar 2012 10:31:27 -0600 |
| parents | |
| children |
| rev | line source |
|---|---|
| rlm@1 | 1 // Common/StringToInt.cpp |
| rlm@1 | 2 |
| rlm@1 | 3 #include "StdAfx.h" |
| rlm@1 | 4 |
| rlm@1 | 5 #include "StringToInt.h" |
| rlm@1 | 6 |
| rlm@1 | 7 UInt64 ConvertStringToUInt64(const char *s, const char **end) |
| rlm@1 | 8 { |
| rlm@1 | 9 UInt64 result = 0; |
| rlm@1 | 10 for (;;) |
| rlm@1 | 11 { |
| rlm@1 | 12 char c = *s; |
| rlm@1 | 13 if (c < '0' || c > '9') |
| rlm@1 | 14 { |
| rlm@1 | 15 if (end != NULL) |
| rlm@1 | 16 *end = s; |
| rlm@1 | 17 return result; |
| rlm@1 | 18 } |
| rlm@1 | 19 result *= 10; |
| rlm@1 | 20 result += (c - '0'); |
| rlm@1 | 21 s++; |
| rlm@1 | 22 } |
| rlm@1 | 23 } |
| rlm@1 | 24 |
| rlm@1 | 25 UInt64 ConvertOctStringToUInt64(const char *s, const char **end) |
| rlm@1 | 26 { |
| rlm@1 | 27 UInt64 result = 0; |
| rlm@1 | 28 for (;;) |
| rlm@1 | 29 { |
| rlm@1 | 30 char c = *s; |
| rlm@1 | 31 if (c < '0' || c > '7') |
| rlm@1 | 32 { |
| rlm@1 | 33 if (end != NULL) |
| rlm@1 | 34 *end = s; |
| rlm@1 | 35 return result; |
| rlm@1 | 36 } |
| rlm@1 | 37 result <<= 3; |
| rlm@1 | 38 result += (c - '0'); |
| rlm@1 | 39 s++; |
| rlm@1 | 40 } |
| rlm@1 | 41 } |
| rlm@1 | 42 |
| rlm@1 | 43 UInt64 ConvertHexStringToUInt64(const char *s, const char **end) |
| rlm@1 | 44 { |
| rlm@1 | 45 UInt64 result = 0; |
| rlm@1 | 46 for (;;) |
| rlm@1 | 47 { |
| rlm@1 | 48 char c = *s; |
| rlm@1 | 49 UInt32 v; |
| rlm@1 | 50 if (c >= '0' && c <= '9') v = (c - '0'); |
| rlm@1 | 51 else if (c >= 'A' && c <= 'F') v = 10 + (c - 'A'); |
| rlm@1 | 52 else if (c >= 'a' && c <= 'f') v = 10 + (c - 'a'); |
| rlm@1 | 53 else |
| rlm@1 | 54 { |
| rlm@1 | 55 if (end != NULL) |
| rlm@1 | 56 *end = s; |
| rlm@1 | 57 return result; |
| rlm@1 | 58 } |
| rlm@1 | 59 result <<= 4; |
| rlm@1 | 60 result |= v; |
| rlm@1 | 61 s++; |
| rlm@1 | 62 } |
| rlm@1 | 63 } |
| rlm@1 | 64 |
| rlm@1 | 65 |
| rlm@1 | 66 UInt64 ConvertStringToUInt64(const wchar_t *s, const wchar_t **end) |
| rlm@1 | 67 { |
| rlm@1 | 68 UInt64 result = 0; |
| rlm@1 | 69 for (;;) |
| rlm@1 | 70 { |
| rlm@1 | 71 wchar_t c = *s; |
| rlm@1 | 72 if (c < '0' || c > '9') |
| rlm@1 | 73 { |
| rlm@1 | 74 if (end != NULL) |
| rlm@1 | 75 *end = s; |
| rlm@1 | 76 return result; |
| rlm@1 | 77 } |
| rlm@1 | 78 result *= 10; |
| rlm@1 | 79 result += (c - '0'); |
| rlm@1 | 80 s++; |
| rlm@1 | 81 } |
| rlm@1 | 82 } |
| rlm@1 | 83 |
| rlm@1 | 84 |
| rlm@1 | 85 Int64 ConvertStringToInt64(const char *s, const char **end) |
| rlm@1 | 86 { |
| rlm@1 | 87 if (*s == '-') |
| rlm@1 | 88 return -(Int64)ConvertStringToUInt64(s + 1, end); |
| rlm@1 | 89 return ConvertStringToUInt64(s, end); |
| rlm@1 | 90 } |