mirror of https://github.com/axmolengine/axmol.git
28 lines
1.1 KiB
Markdown
28 lines
1.1 KiB
Markdown
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# fastlib
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* **fast_csv.hpp**: Only one API ```fast_csv_parse_line``` to help parse csv easy with FSM, no any memory alloc duraing parsing
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```cpp
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std::string buffer = read_file("xxx.csv");
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const char* cursor = buffer.c_str();
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while(*cursor) {
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cursor = fastl::fast_csv_parse_line(cursor, [&](const char* v_start, const char* v_end) {
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// do somethings, store or parse the column value
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// std::string value(v_start, v_end);
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});
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```
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or
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```cpp
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std::string buffer = read_file("xxx.csv");
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if(!buffer.empty()) {
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char* cursor = &buffer.front();
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while(*cursor) {
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cursor = fastl::fast_csv_parse_line(cursor, [&](char* v_start, char* v_end) {
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// if this column is int or double, is more Memory Efficient parse it directly
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char endch = *v_end; // store the last char in the streaming
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*v_end = '\0';
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int key = atoi(v_start); // parse int value directly
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*v_end = endch; // restore rthe last char in the stream
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});
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}
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```
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* **fast_split.hpp**: Yeah, idea same with ```fast_csv.hpp```
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