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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
| commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
| tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /other-licenses/7zstub/src/CPP/Common/StringToInt.cpp | |
| parent | Initial commit. (diff) | |
| download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip | |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'other-licenses/7zstub/src/CPP/Common/StringToInt.cpp')
| -rw-r--r-- | other-licenses/7zstub/src/CPP/Common/StringToInt.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Common/StringToInt.cpp b/other-licenses/7zstub/src/CPP/Common/StringToInt.cpp new file mode 100644 index 0000000000..295816e16f --- /dev/null +++ b/other-licenses/7zstub/src/CPP/Common/StringToInt.cpp @@ -0,0 +1,144 @@ +// Common/StringToInt.cpp
+
+#include "StdAfx.h"
+
+#include "StringToInt.h"
+
+static const UInt32 k_UInt32_max = 0xFFFFFFFF;
+static const UInt64 k_UInt64_max = UINT64_CONST(0xFFFFFFFFFFFFFFFF);
+// static const UInt64 k_UInt64_max = (UInt64)(Int64)-1;
+
+#define CONVERT_STRING_TO_UINT_FUNC(uintType, charType, charTypeUnsigned) \
+ uintType ConvertStringTo ## uintType(const charType *s, const charType **end) throw() { \
+ if (end) *end = s; \
+ uintType res = 0; \
+ for (;; s++) { \
+ charTypeUnsigned c = (charTypeUnsigned)*s; \
+ if (c < '0' || c > '9') { if (end) *end = s; return res; } \
+ if (res > (k_ ## uintType ## _max) / 10) return 0; \
+ res *= 10; \
+ unsigned v = (c - '0'); \
+ if (res > (k_ ## uintType ## _max) - v) return 0; \
+ res += v; }}
+
+CONVERT_STRING_TO_UINT_FUNC(UInt32, char, Byte)
+CONVERT_STRING_TO_UINT_FUNC(UInt32, wchar_t, wchar_t)
+CONVERT_STRING_TO_UINT_FUNC(UInt64, char, Byte)
+CONVERT_STRING_TO_UINT_FUNC(UInt64, wchar_t, wchar_t)
+
+Int32 ConvertStringToInt32(const wchar_t *s, const wchar_t **end) throw()
+{
+ if (end)
+ *end = s;
+ const wchar_t *s2 = s;
+ if (*s == '-')
+ s2++;
+ if (*s2 == 0)
+ return 0;
+ const wchar_t *end2;
+ UInt32 res = ConvertStringToUInt32(s2, &end2);
+ if (*s == '-')
+ {
+ if (res > ((UInt32)1 << (32 - 1)))
+ return 0;
+ }
+ else if ((res & ((UInt32)1 << (32 - 1))) != 0)
+ return 0;
+ if (end)
+ *end = end2;
+ if (*s == '-')
+ return -(Int32)res;
+ return (Int32)res;
+}
+
+UInt32 ConvertOctStringToUInt32(const char *s, const char **end) throw()
+{
+ if (end)
+ *end = s;
+ UInt32 res = 0;
+ for (;; s++)
+ {
+ unsigned c = (unsigned char)*s;
+ if (c < '0' || c > '7')
+ {
+ if (end)
+ *end = s;
+ return res;
+ }
+ if ((res & (UInt32)7 << (32 - 3)) != 0)
+ return 0;
+ res <<= 3;
+ res |= (unsigned)(c - '0');
+ }
+}
+
+UInt64 ConvertOctStringToUInt64(const char *s, const char **end) throw()
+{
+ if (end)
+ *end = s;
+ UInt64 res = 0;
+ for (;; s++)
+ {
+ unsigned c = (unsigned char)*s;
+ if (c < '0' || c > '7')
+ {
+ if (end)
+ *end = s;
+ return res;
+ }
+ if ((res & (UInt64)7 << (64 - 3)) != 0)
+ return 0;
+ res <<= 3;
+ res |= (unsigned)(c - '0');
+ }
+}
+
+UInt32 ConvertHexStringToUInt32(const char *s, const char **end) throw()
+{
+ if (end)
+ *end = s;
+ UInt32 res = 0;
+ for (;; s++)
+ {
+ unsigned c = (Byte)*s;
+ unsigned 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)
+ *end = s;
+ return res;
+ }
+ if ((res & (UInt32)0xF << (32 - 4)) != 0)
+ return 0;
+ res <<= 4;
+ res |= v;
+ }
+}
+
+UInt64 ConvertHexStringToUInt64(const char *s, const char **end) throw()
+{
+ if (end)
+ *end = s;
+ UInt64 res = 0;
+ for (;; s++)
+ {
+ unsigned c = (Byte)*s;
+ unsigned 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)
+ *end = s;
+ return res;
+ }
+ if ((res & (UInt64)0xF << (64 - 4)) != 0)
+ return 0;
+ res <<= 4;
+ res |= v;
+ }
+}
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