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f45e379802
Use uint8_t when we mean uint8_t, i.e. vector<uint8_t> instead of vector<char>. Add a template parameter instead of vector so we can swap in a non-copying data type. Signed-off-by: Zygo Blaxell <bees@furryterror.org>
68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
#ifndef CRUCIBLE_STRING_H
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#define CRUCIBLE_STRING_H
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#include "crucible/error.h"
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#include <cstdint>
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#include <cstring>
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#include <string>
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#include <vector>
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namespace crucible {
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using namespace std;
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// Zero-initialize a base class object (usually a C struct)
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template <class Base>
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void
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memset_zero(Base *that)
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{
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memset(that, 0, sizeof(Base));
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}
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// Copy a base class object (usually a C struct) into a vector<uint8_t>
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template <class Base>
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vector<uint8_t>
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vector_copy_struct(Base *that)
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{
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const uint8_t *begin_that = reinterpret_cast<const uint8_t *>(static_cast<const Base *>(that));
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return vector<uint8_t>(begin_that, begin_that + sizeof(Base));
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}
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// int->hex conversion with sprintf
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string to_hex(uint64_t i);
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// hex->int conversion with stoull
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uint64_t from_hex(const string &s);
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// asprintf with string output and exceptions
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template<class... Args>
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string
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astringprintf(const char *fmt, Args... args)
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{
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char *rv = NULL;
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DIE_IF_MINUS_ONE(asprintf(&rv, fmt, args...));
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string rv_string = rv;
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free(rv);
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return rv_string;
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}
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template<class... Args>
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string
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astringprintf(const string &fmt, Args... args)
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{
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return astringprintf(fmt.c_str(), args...);
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}
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vector<string> split(string delim, string s);
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// Shut up and give me the difference between two pointers
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template <class P1, class P2>
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ptrdiff_t
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pointer_distance(const P1 *a, const P2 *b)
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{
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return reinterpret_cast<const uint8_t *>(a) - reinterpret_cast<const uint8_t *>(b);
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}
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};
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#endif // CRUCIBLE_STRING_H
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