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Template away repetition.

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This commit is contained in:
Thomas Harte
2025-02-18 22:48:47 -05:00
parent f786f8a970
commit edd4ed307f
23 changed files with 207 additions and 282 deletions
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75
Storage/FileHolder.hpp
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@@ -46,19 +46,13 @@ public:
*/
FileHolder(const std::string &file_name, FileMode ideal_mode = FileMode::ReadWrite);
/*!
Performs @c get8 four times on @c file, casting each result to a @c uint32_t
and returning the four assembled in little endian order.
*/
uint32_t get32le();
/*!
Writes @c value using successive @c put8s, in little endian order.
*/
template <typename T> void put_le(T value) {
auto bytes = sizeof(T);
while(bytes--) {
put8(value&0xff);
template <typename IntT, size_t bytes = 0>
void put_le(IntT value) {
for(size_t c = 0; c < bytes ? bytes : sizeof(IntT); c++) {
put8(uint8_t(value));
value >>= 8;
}
}
@@ -66,8 +60,9 @@ public:
/*!
Writes @c value using successive @c put8s, in big endian order.
*/
template <typename T> void put_be(T value) {
auto shift = sizeof(T) * 8;
template <typename IntT, size_t bytes = 0>
void put_be(IntT value) {
auto shift = (bytes ? bytes : sizeof(IntT)) * 8;
while(shift) {
shift -= 8;
put8((value >> shift)&0xff);
@@ -75,44 +70,32 @@ public:
}
/*!
Performs @c get8 four times on @c file, casting each result to a @c uint32_t
and returning the four assembled in big endian order.
Writes @c value using successive @c put8s, in little endian order.
*/
uint32_t get32be();
template <typename IntT, size_t bytes = 0>
IntT get_le() {
constexpr auto length = bytes ? bytes : sizeof(IntT);
IntT result{};
for(size_t c = 0; c < length; c++) {
result >>= 8;
result |= IntT(get8() << ((length - 1) * 8));
}
return result;
}
/*!
Performs @c get8 three times on @c file, casting each result to a @c uint32_t
and returning the three assembled in little endian order.
Writes @c value using successive @c put8s, in big endian order.
*/
uint32_t get24le();
/*!
Performs @c get8 three times on @c file, casting each result to a @c uint32_t
and returning the three assembled in big endian order.
*/
uint32_t get24be();
/*!
Performs @c get8 two times on @c file, casting each result to a @c uint32_t
and returning the two assembled in little endian order.
*/
uint16_t get16le();
/*!
Writes @c value using two successive @c put8s, in little endian order.
*/
void put16le(uint16_t value);
/*!
Performs @c get8 two times on @c file, casting each result to a @c uint32_t
and returning the two assembled in big endian order.
*/
uint16_t get16be();
/*!
Writes @c value using two successive @c put8s, in big endian order.
*/
void put16be(uint16_t value);
template <typename IntT, size_t bytes = 0>
IntT get_be() {
constexpr auto length = bytes ? bytes : sizeof(IntT);
IntT result{};
for(size_t c = 0; c < length; c++) {
result <<= 8;
result |= get8();
}
return result;
}
/*! Reads a single byte from @c file. */
uint8_t get8();