mirror of https://github.com/bsnes-emu/bsnes.git
139 lines
3.6 KiB
C++
139 lines
3.6 KiB
C++
#pragma once
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namespace nall {
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//nall::format is a vector<string> of parameters that can be applied to a string
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//each {#} token will be replaced with its appropriate format parameter
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auto string::format(const nall::string_format& params) -> type& {
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auto size = (int)this->size();
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auto data = memory::allocate<char>(size);
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memory::copy(data, this->data(), size);
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int x = 0;
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while(x < size - 2) { //2 = minimum tag length
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if(data[x] != '{') { x++; continue; }
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int y = x + 1;
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while(y < size - 1) { //-1 avoids going out of bounds on test after this loop
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if(data[y] != '}') { y++; continue; }
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break;
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}
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if(data[y++] != '}') { x++; continue; }
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static auto isNumeric = [](char* s, char* e) -> bool {
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if(s == e) return false; //ignore empty tags: {}
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while(s < e) {
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if(*s >= '0' && *s <= '9') { s++; continue; }
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return false;
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}
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return true;
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};
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if(!isNumeric(&data[x + 1], &data[y - 1])) { x++; continue; }
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uint index = toNatural(&data[x + 1]);
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if(index >= params.size()) { x++; continue; }
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uint sourceSize = y - x;
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uint targetSize = params[index].size();
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uint remaining = size - x;
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if(sourceSize > targetSize) {
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uint difference = sourceSize - targetSize;
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memory::move(&data[x], &data[x + difference], remaining);
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size -= difference;
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} else if(targetSize > sourceSize) {
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uint difference = targetSize - sourceSize;
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data = (char*)realloc(data, size + difference);
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size += difference;
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memory::move(&data[x + difference], &data[x], remaining);
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}
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memory::copy(&data[x], params[index].data(), targetSize);
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x += targetSize;
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}
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resize(size);
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memory::copy(get(), data, size);
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memory::free(data);
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return *this;
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}
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template<typename T, typename... P> auto string_format::append(const T& value, P&&... p) -> string_format& {
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vector<string>::append(value);
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return append(forward<P>(p)...);
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}
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auto string_format::append() -> string_format& {
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return *this;
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}
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template<typename... P> auto print(P&&... p) -> void {
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string s{forward<P>(p)...};
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fwrite(s.data(), 1, s.size(), stdout);
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fflush(stdout);
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}
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template<typename... P> auto print(FILE* fp, P&&... p) -> void {
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string s{forward<P>(p)...};
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fwrite(s.data(), 1, s.size(), fp);
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if(fp == stdout || fp == stderr) fflush(fp);
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}
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template<typename T> auto pad(const T& value, long precision, char padchar) -> string {
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string buffer{value};
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if(precision) buffer.size(precision, padchar);
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return buffer;
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}
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auto hex(uintmax value, long precision, char padchar) -> string {
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string buffer;
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buffer.resize(sizeof(uintmax) * 2);
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char* p = buffer.get();
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uint size = 0;
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do {
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uint n = value & 15;
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p[size++] = n < 10 ? '0' + n : 'a' + n - 10;
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value >>= 4;
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} while(value);
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buffer.resize(size);
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buffer.reverse();
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if(precision) buffer.size(precision, padchar);
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return buffer;
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}
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auto octal(uintmax value, long precision, char padchar) -> string {
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string buffer;
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buffer.resize(sizeof(uintmax) * 3);
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char* p = buffer.get();
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uint size = 0;
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do {
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p[size++] = '0' + (value & 7);
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value >>= 3;
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} while(value);
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buffer.resize(size);
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buffer.reverse();
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if(precision) buffer.size(precision, padchar);
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return buffer;
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}
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auto binary(uintmax value, long precision, char padchar) -> string {
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string buffer;
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buffer.resize(sizeof(uintmax) * 8);
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char* p = buffer.get();
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uint size = 0;
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do {
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p[size++] = '0' + (value & 1);
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value >>= 1;
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} while(value);
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buffer.resize(size);
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buffer.reverse();
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if(precision) buffer.size(precision, padchar);
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return buffer;
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}
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}
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