common.h

#ifndef __COMMON_H__
#define __COMMON_H__

// Defined functions:
//static void RemoveNewLines(char* String);
//static void RemoveQuotationMarks(char* String);
//static void ReadFilename(char* buffer, size_t bufsize);
//INLINE void DblClickWait(const char* argv0);
//static void PrintMinSec(const UINT32 SamplePos, char* TempStr); [WIN32 only]

#ifdef __GNUC__
#pragma GCC diagnostic ignored "-Wunused-function"
#endif


#include <string.h>
#include <stdio.h>		// for sprintf()

#ifdef _WIN32
#include <conio.h>		// for _getch()
#include <windows.h>	// for OemToChar()
#else
#include <limits.h>
#define MAX_PATH	PATH_MAX
#endif


#ifdef _MSC_VER
#define strdup		_strdup
#define stricmp		_stricmp
#define strnicmp	_strnicmp
#else
#define _getch		getchar
#define stricmp		strcasecmp
#define strnicmp	strncasecmp
#endif
#ifdef _WIN32
// Note: Both, MS VC++ and MinGW use _wcsicmp.
#define wcsicmp 	_wcsicmp
#else
#define wcsicmp 	wcscasecmp
#endif


// Console Quotation Mark (Windows: ", Linux: ')
#ifdef _WIN32
#define QMARK_CHR	'\"'
#else
#define QMARK_CHR	'\''
#endif


#define ZLIB_SEEKBUG_CHECK(vgmhdr) \
	if (vgmhdr.fccVGM != FCC_VGM) \
	{ \
		printf("VGM signature matched on the first read, but not on the second one!\n"); \
		printf("This is a known zlib bug where gzseek fails. Please install a fixed zlib.\n"); \
		goto OpenErr; \
	}



static void RemoveNewLines(char* String)
{
	char* strPtr;

	strPtr = String + strlen(String) - 1;
	while(strPtr >= String && (UINT8)*strPtr < 0x20)	// <0x20 -> is Control Character
	{
		*strPtr = '\0';
		strPtr --;
	}

	return;
}

static void RemoveQuotationMarks(char* String)
{
	size_t strLen;
	char* endQMark;

	if (String[0] != QMARK_CHR)
		return;

	strLen = strlen(String);
	memmove(String, String + 1, strLen);	// Remove first char
	endQMark = strrchr(String, QMARK_CHR);
	if (endQMark != NULL)
		*endQMark = '\0';	// Remove last Quot.-Mark

	return;
}

static void ReadFilename(char* buffer, size_t bufsize)
{
	char* retStr;

	retStr = fgets(buffer, bufsize, stdin);
	if (retStr == NULL)
		buffer[0] = '\0';

#ifdef _WIN32
	if (GetConsoleCP() == GetOEMCP())
		OemToChar(buffer, buffer);	// OEM -> ANSI conversion
#endif

	RemoveNewLines(buffer);
	RemoveQuotationMarks(buffer);

	return;
}

INLINE void DblClickWait(const char* argv0)
{
#ifdef _WIN32
	char* msystem;

	if (argv0[1] != ':')
		return;	// not called with an absolute path

	msystem = getenv("MSYSTEM");
	if (msystem != NULL)
	{
		// return, if we're within a MinGW/MSYS environment
		// (MSYS always calls using absolute paths)
		if (! strncmp(msystem, "MINGW", 5) ||
			! strncmp(msystem, "MSYS", 4))
			return;
	}

	// Executed by Double-Clicking (or Drag and Drop),
	// so let's keep the window open until the user presses a key.
	if (_kbhit())
		_getch();
	_getch();

	return;
#else
	// Double-clicking a console application on Unix doesn't open
	// a console window, so don't do anything.
	return;
#endif
}

// Note: Really used by vgm2txt and vgmlpfnd only
//       most other tools use it for progress display under Windows
static void PrintMinSec(const UINT32 SamplePos, char* TempStr)
{
	float TimeSec;
	UINT16 TimeMin;

	TimeSec = (float)SamplePos / 44100.0f;
	TimeMin = (UINT16)(TimeSec / 60);
	TimeSec -= TimeMin * 60;
	sprintf(TempStr, "%02u:%05.2f", TimeMin, TimeSec);

	return;
}

#endif	// __COMMON_H__