/*
*******************************************************************************
*
*   Copyright (C) 1999-2011, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  toolutil.h
*   encoding:   US-ASCII
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 1999nov19
*   created by: Markus W. Scherer
*
*   This file defines utility functions for ICU tools like genccode.
*/

#ifndef __TOOLUTIL_H__
#define __TOOLUTIL_H__

#include "unicode/utypes.h"

#include "unicode/putil.h"
#include "putilimp.h"

/*** Platform #defines move here ***/
#if U_PLATFORM_HAS_WIN32_API
#ifdef __GNUC__
#define WINDOWS_WITH_GNUC
#else
#define WINDOWS_WITH_MSVC
#endif
#endif


#if !defined(WINDOWS_WITH_MSVC) && !U_PLATFORM_IS_LINUX_BASED
#define BUILD_DATA_WITHOUT_ASSEMBLY
#endif

#ifndef U_DISABLE_OBJ_CODE /* testing */
#if defined(WINDOWS_WITH_MSVC) || U_PLATFORM_IS_LINUX_BASED
#define CAN_WRITE_OBJ_CODE
#endif
#if U_PLATFORM_HAS_WIN32_API || defined(U_ELF)
#define CAN_GENERATE_OBJECTS
#endif
#endif

#if U_PLATFORM == U_PF_CYGWIN || defined(CYGWINMSVC)
#define USING_CYGWIN
#endif

/*
 * When building the data library without assembly,
 * some platforms use a single c code file for all of
 * the data to generate the final data library. This can
 * increase the performance of the pkdata tool.
 */
#if U_PLATFORM == U_PF_OS400
#define USE_SINGLE_CCODE_FILE
#endif

/* Need to fix the file seperator character when using MinGW. */
#if defined(WINDOWS_WITH_GNUC) || defined(USING_CYGWIN)
#define PKGDATA_FILE_SEP_STRING "/"
#else
#define PKGDATA_FILE_SEP_STRING U_FILE_SEP_STRING
#endif

#define LARGE_BUFFER_MAX_SIZE 2048
#define SMALL_BUFFER_MAX_SIZE 512
#define SMALL_BUFFER_FLAG_NAMES 32
#define BUFFER_PADDING_SIZE 20


#if U_HAVE_POPEN
#if (U_PF_MINGW <= U_PLATFORM || U_PLATFORM <= U_PF_CYGWIN) && defined(__STRICT_ANSI__)
/* popen/pclose aren't defined in strict ANSI on Cygwin and MinGW */
#undef __STRICT_ANSI__
#endif
#endif

/** End platform defines **/


#ifdef __cplusplus

#include "unicode/errorcode.h"

U_NAMESPACE_BEGIN

/**
 * ErrorCode subclass for use in ICU command-line tools.
 * The destructor calls handleFailure() which calls exit(errorCode) when isFailure().
 */
class U_TOOLUTIL_API IcuToolErrorCode : public ErrorCode {
public:
    /**
     * @param loc A short string describing where the IcuToolErrorCode is used.
     */
    IcuToolErrorCode(const char *loc) : location(loc) {}
    virtual ~IcuToolErrorCode();
protected:
    virtual void handleFailure() const;
private:
    const char *location;
};

U_NAMESPACE_END

#endif

/*
 * For Windows, a path/filename may be the short (8.3) version
 * of the "real", long one. In this case, the short one
 * is abbreviated and contains a tilde etc.
 * This function returns a pointer to the original pathname
 * if it is the "real" one itself, and a pointer to a static
 * buffer (not thread-safe) containing the long version
 * if the pathname is indeed abbreviated.
 *
 * On platforms other than Windows, this function always returns
 * the input pathname pointer.
 *
 * This function is especially useful in tools that are called
 * by a batch file for loop, which yields short pathnames on Win9x.
 */
U_CAPI const char * U_EXPORT2
getLongPathname(const char *pathname);

/**
 * Find the basename at the end of a pathname, i.e., the part
 * after the last file separator, and return a pointer
 * to this part of the pathname.
 * If the pathname only contains a basename and no file separator,
 * then the pathname pointer itself is returned.
 **/
U_CAPI const char * U_EXPORT2
findBasename(const char *filename);

/**
 * Find the directory name of a pathname, that is, everything
 * up to but not including the last file separator. 
 *
 * If successful, copies the directory name into the output buffer along with
 * a terminating NULL. 
 *
 * If there isn't a directory name in the path, it returns the current directory string ('.').
 * @param path the full pathname to inspect. 
 * @param buffer the output buffer
 * @param bufLen the output buffer length
 * @param status error code- may return U_BUFFER_OVERFLOW_ERROR if bufLen is too small.
 * @return If successful, a pointer to the output buffer. If failure or bufLen is too small, NULL.
 **/
U_CAPI const char * U_EXPORT2
findDirname(const char *path, char *buffer, int32_t bufLen, UErrorCode* status);

/*
 * Return the current year in the Gregorian calendar. Used for copyright generation.
 */
U_CAPI int32_t U_EXPORT2
getCurrentYear(void);

/*
 * Creates a directory with pathname.
 *
 * @param status Set to an error code when mkdir failed.
 */
U_CAPI void U_EXPORT2
uprv_mkdir(const char *pathname, UErrorCode *status);

/**
 * Return the modification date for the specified file or directory.
 * Return value is undefined if there was an error.
 */
/*U_CAPI UDate U_EXPORT2
uprv_getModificationDate(const char *pathname, UErrorCode *status);
*/
/*
 * Returns the modification
 *
 * @param status Set to an error code when mkdir failed.
 */

/*
 * UToolMemory is used for generic, custom memory management.
 * It is allocated with enough space for count*size bytes starting
 * at array.
 * The array is declared with a union of large data types so
 * that its base address is aligned for any types.
 * If size is a multiple of a data type size, then such items
 * can be safely allocated inside the array, at offsets that
 * are themselves multiples of size.
 */
struct UToolMemory;
typedef struct UToolMemory UToolMemory;

/**
 * Open a UToolMemory object for allocation of initialCapacity to maxCapacity
 * items with size bytes each.
 */
U_CAPI UToolMemory * U_EXPORT2
utm_open(const char *name, int32_t initialCapacity, int32_t maxCapacity, int32_t size);

/**
 * Close a UToolMemory object.
 */
U_CAPI void U_EXPORT2
utm_close(UToolMemory *mem);

/**
 * Get the pointer to the beginning of the array of items.
 * The pointer becomes invalid after allocation of new items.
 */
U_CAPI void * U_EXPORT2
utm_getStart(UToolMemory *mem);

/**
 * Get the current number of items.
 */
U_CAPI int32_t U_EXPORT2
utm_countItems(UToolMemory *mem);

/**
 * Allocate one more item and return the pointer to its start in the array.
 */
U_CAPI void * U_EXPORT2
utm_alloc(UToolMemory *mem);

/**
 * Allocate n items and return the pointer to the start of the first one in the array.
 */
U_CAPI void * U_EXPORT2
utm_allocN(UToolMemory *mem, int32_t n);

#endif