一个极度简单的写Excel文件实现

在网上看见一个C#写Excel的实现，我改成C++了，希望能对大家有所帮助。

#include <stdio.h>
#include <string.h>

typedef unsigned short ushort;

class ExcelWriter
{
private:
FILE *pf;

void WriteArray(const void *value, ushort len)
{
if (pf)
fwrite(value, 1, len, pf);
}

public:
ExcelWriter() { pf = 0; }
~ExcelWriter() { if (pf) fclose(pf); }

void WriteCell(ushort row, ushort col, const char *value)
{
ushort iLen = (ushort)strlen(value);
ushort clData[] = { 0x0204, ushort(8 + iLen), row, col, 0, iLen };
WriteArray(clData, 12);
WriteArray(value, iLen);
}

void WriteCell(ushort row, ushort col, int value)
{
ushort clData[] = { 0x027E, 10, row, col, 0 };
WriteArray(clData, 10);
int iValue = (value << 2) | 2;
WriteArray(&iValue, 4);
}

void WriteCell(ushort row, ushort col, double value)
{
ushort clData[] = { 0x0203, 14, row, col, 0 };
WriteArray(clData, 10);
WriteArray(&value, 8);
}

void WriteCell(ushort row, ushort col)
{
ushort clData[] = { 0x0201, 6, row, col, 0x17 };
WriteArray(clData, 10);
}

bool BeginWrite(const char *fileName)
{
pf = fopen(fileName, "wb+");
if (!pf) return false;
ushort clBegin[] = { 0x0809, 0x08, 0x0, 0x10, 0x0, 0x0 };
WriteArray(clBegin, 12);
return true;
}

void EndWrite()
{
ushort clEnd[] = { 0x0A, 0x0 };
WriteArray(clEnd, 4);
fclose(pf);
pf = 0;
}
};

int main()
{
ExcelWriter writer;
writer.BeginWrite("F:/demo.xls");
writer.WriteCell(0, 0, "ExcelWriter Demo");
writer.WriteCell(1, 0, "int");
writer.WriteCell(1, 1, 10);
writer.WriteCell(2, 0, "double");
writer.WriteCell(2, 1, 1.5);
writer.WriteCell(3, 0, "empty");
writer.WriteCell(3, 1);
writer.EndWrite();
return 0;
}