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#include <cstdlib> |
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#include <cstdint> |
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#include <cstring> |
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#include "table.h" |
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table::table() { |
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memset(data, 0, sizeof(data)); |
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utf8_mode = true; |
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} |
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void table::clear() { |
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for(int i=0; i<256; i++) { |
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if(data[i] != nullptr) { |
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for(int j=0; j<256; j++) { |
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if(data[i][j] != nullptr) free(data[i][j]); |
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} |
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free(data[i]); |
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} |
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} |
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memset(data, 0, sizeof(data)); |
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} |
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void table::copy_from(const table& from) { |
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memcpy(data, from.data, sizeof(data)); |
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utf8_mode = from.utf8_mode; |
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// copy over all allocated pages |
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for(int i=0; i<256; i++) { |
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if(data[i] != nullptr) { |
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table_page** newp = (table_page**)calloc(256,sizeof(void*)); |
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memcpy(newp, data[i], 256*sizeof(void*)); |
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data[i] = newp; |
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for(int j=0; j<256; j++) { |
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if(data[i][j] != nullptr) { |
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table_page* newp = (table_page*)calloc(1,sizeof(table_page)); |
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memcpy(newp, data[i][j], sizeof(table_page)); |
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data[i][j] = newp; |
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} |
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} |
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} |
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} |
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} |
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table& table::operator=(const table& from) { |
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clear(); |
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copy_from(from); |
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return *this; |
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} |
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table::table(const table& from) { |
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copy_from(from); |
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} |
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table::~table() { |
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clear(); |
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} |
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void table::set_val(int off, uint32_t val) { |
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if(data[off >> 16] == nullptr) { |
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data[off >> 16] = (table_page**)calloc(256,sizeof(void*)); |
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} |
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table_page** thisbank = data[off >> 16]; |
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if(thisbank[(off >> 8) & 255] == nullptr) { |
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thisbank[(off >> 8) & 255] = (table_page*)calloc(1,sizeof(table_page)); |
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} |
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table_page* thispage = thisbank[(off >> 8) & 255]; |
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int idx = (off & 255) / 32; |
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int bit = off % 32; |
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thispage->defined[idx] |= 1<<bit; |
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thispage->chars[off & 255] = val; |
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} |
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int64_t table::get_val(int off) { |
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int64_t def = utf8_mode ? off : -1; |
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table_page** thisbank = data[off >> 16]; |
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if(thisbank == nullptr) return def; |
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table_page* thispage = thisbank[(off >> 8) & 255]; |
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if(thispage == nullptr) return def; |
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int idx = (off & 255) / 32; |
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int bit = off % 32; |
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if(((thispage->defined[idx] >> bit) & 1) == 0) return def; |
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return thispage->chars[off & 255]; |
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} |
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