64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
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#ifndef __INDENT_PRINTER_H
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#define __INDENT_PRINTER_H
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class IndentPrinter {
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public:
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IndentPrinter(FILE* stream, int indentSize=2)
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: mStream(stream)
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, mIndentSize(indentSize)
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, mIndent(0)
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, mNeedsIndent(true) {
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}
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void indent(int amount = 1) {
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mIndent += amount;
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if (mIndent < 0) {
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mIndent = 0;
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}
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}
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void print(const char* fmt, ...) {
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doIndent();
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va_list args;
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va_start(args, fmt);
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vfprintf(mStream, fmt, args);
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va_end(args);
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}
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void println(const char* fmt, ...) {
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doIndent();
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va_list args;
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va_start(args, fmt);
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vfprintf(mStream, fmt, args);
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va_end(args);
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fputs("\n", mStream);
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mNeedsIndent = true;
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}
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void println() {
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doIndent();
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fputs("\n", mStream);
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mNeedsIndent = true;
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}
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private:
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void doIndent() {
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if (mNeedsIndent) {
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int numSpaces = mIndent * mIndentSize;
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while (numSpaces > 0) {
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fputs(" ", mStream);
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numSpaces--;
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}
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mNeedsIndent = false;
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}
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}
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FILE* mStream;
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const int mIndentSize;
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int mIndent;
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bool mNeedsIndent;
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};
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#endif // __INDENT_PRINTER_H
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