116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
//
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// File: gs_string_builder.h
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// Author: Peter Slattery
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// Creation Date: 2020-01-01
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//
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#ifndef GS_STRING_BUILDER_H
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#ifndef GS_STRING_BUILDER_NO_STDIO
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#include <stdio.h>
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#endif
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#define STRING_BUILDER_BUFFER_CAPACITY 4096
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struct string_builder_buffer
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{
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u8* BufferMemory;
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string String;
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string_builder_buffer* Next;
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};
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struct string_builder
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{
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string_builder_buffer* Buffers;
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string_builder_buffer* Head;
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};
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internal void
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GrowStringBuilder(string_builder* StringBuilder)
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{
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u8* BufferAndHeader = (u8*)malloc(sizeof(string_builder_buffer) + STRING_BUILDER_BUFFER_CAPACITY);
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string_builder_buffer* NewBuffer = (string_builder_buffer*)BufferAndHeader;
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*NewBuffer = {0};
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NewBuffer->BufferMemory = (u8*)(NewBuffer + 1);
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NewBuffer->String = MakeString((char*)NewBuffer->BufferMemory, 0, STRING_BUILDER_BUFFER_CAPACITY);
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if (!StringBuilder->Buffers)
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{
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StringBuilder->Buffers = NewBuffer;
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StringBuilder->Head = NewBuffer;
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}
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else
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{
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StringBuilder->Head->Next = NewBuffer;
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StringBuilder->Head = NewBuffer;
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}
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}
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internal void
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Write(string Text, string_builder* StringBuilder)
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{
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string TextLeft = Text;
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if (StringBuilder->Buffers == 0)
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{
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GrowStringBuilder(StringBuilder);
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}
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while (TextLeft.Length > 0)
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{
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// Copy what there is room for
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s32 SpaceAvailable = StringBuilder->Head->String.Max - StringBuilder->Head->String.Length;
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ConcatString(TextLeft, GSMin(SpaceAvailable, TextLeft.Length), &StringBuilder->Head->String);
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TextLeft.Memory += SpaceAvailable;
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TextLeft.Length -= SpaceAvailable;
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if (TextLeft.Length > 0)
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{
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GrowStringBuilder(StringBuilder);
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}
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}
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}
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internal void
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WriteF(string_builder* StringBuilder, char* Format, ...)
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{
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MakeStringBuffer(Buffer, 256);
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va_list Args;
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va_start(Args, Format);
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Buffer.Length = PrintFArgsList(Buffer.Memory, Buffer.Max, Format, Args);
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va_end(Args);
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Write(Buffer, StringBuilder);
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}
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#ifndef GS_STRING_BUILDER_NO_STDIO
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internal void
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WriteStringBuilderToFile(string_builder StringBuilder, FILE* WriteFile)
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{
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string_builder_buffer* BufferAt = StringBuilder.Buffers;
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while (BufferAt)
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{
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string String = BufferAt->String;
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fwrite(String.Memory, 1, String.Length, WriteFile);
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BufferAt = BufferAt->Next;
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}
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}
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internal void
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StdPrintStringBuilder(string_builder StringBuilder)
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{
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string_builder_buffer* BufferAt = StringBuilder.Buffers;
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while (BufferAt)
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{
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string String = BufferAt->String;
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printf("%.*s", StringExpand(String));
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BufferAt = BufferAt->Next;
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}
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}
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#endif // GS_STRING_BUILDER_NO_STDIO
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#define GS_STRING_BUILDER_H
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#endif // GS_STRING_BUILDER_H
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