'\" '\" Copyright (c) 1990-1994 The Regents of the University of California. '\" Copyright (c) 1994-1996 Sun Microsystems, Inc. '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" .TH radiobutton n 4.4 Tk "Tk Built-In Commands" .so man.macros .BS '\" Note: do not modify the .SH NAME line immediately below! .SH NAME radiobutton \- Create and manipulate 'radiobutton' pick-one widgets .SH SYNOPSIS \fBradiobutton\fR \fIpathName \fR?\fIoptions\fR? .SO \-activebackground \-disabledforeground \-padx \-activeforeground \-font \-pady \-anchor \-foreground \-relief \-background \-highlightbackground \-takefocus \-bitmap \-highlightcolor \-text \-borderwidth \-highlightthickness \-textvariable \-compound \-image \-underline \-cursor \-justify \-wraplength .SE .SH "WIDGET-SPECIFIC OPTIONS" .OP \-command command Command Specifies a Tcl command to associate with the button. This command is typically invoked when mouse button 1 is released over the button window. The button's global variable (\fB\-variable\fR option) will be updated before the command is invoked. .OP \-height height Height Specifies a desired height for the button. If an image or bitmap is being displayed in the button then the value is in screen units (i.e. any of the forms acceptable to \fBTk_GetPixels\fR); for text it is in lines of text. If this option is not specified, the button's desired height is computed from the size of the image or bitmap or text being displayed in it. .OP \-indicatoron indicatorOn IndicatorOn Specifies whether or not the indicator should be drawn. Must be a proper boolean value. If false, the \fB\-relief\fR option is ignored and the widget's relief is always sunken if the widget is selected and raised otherwise. .OP \-selectcolor selectColor Background Specifies a background color to use when the button is selected. If \fB\-indicatoron\fR is true then the color applies to the indicator. Under Windows, this color is used as the background for the indicator regardless of the select state. If \fB\-indicatoron\fR is false, this color is used as the background for the entire widget, in place of \fB\-background\fR or \fB\-activeBackground\fR, whenever the widget is selected. If specified as an empty string then no special color is used for displaying when the widget is selected. .OP \-offrelief offRelief OffRelief Specifies the relief for the checkbutton when the indicator is not drawn and the checkbutton is off. The default value is .QW raised . By setting this option to .QW flat and setting \fB\-indicatoron\fR to false and \fB\-overrelief\fR to .QW raised , the effect is achieved of having a flat button that raises on mouse-over and which is depressed when activated. This is the behavior typically exhibited by the Align-Left, Align-Right, and Center radiobuttons on the toolbar of a word-processor, for example. .OP \-overrelief overRelief OverRelief Specifies an alternative relief for the radiobutton, to be used when the mouse cursor is over the widget. This option can be used to make toolbar buttons, by configuring \fB\-relief flat \-overrelief raised\fR. If the value of this option is the empty string, then no alternative relief is used when the mouse cursor is over the radiobutton. The empty string is the default value. .OP \-selectimage selectImage SelectImage Specifies an image to display (in place of the \fB\-image\fR option) when the radiobutton is selected. This option is ignored unless the \fB\-image\fR option has been specified. .OP \-state state State Specifies one of three states for the radiobutton: \fBnormal\fR, \fBactive\fR, or \fBdisabled\fR. In normal state the radiobutton is displayed using the \fB\-foreground\fR and \fB\-background\fR options. The active state is typically used when the pointer is over the radiobutton. In active state the radiobutton is displayed using the \fB\-activeforeground\fR and \fB\-activebackground\fR options. Disabled state means that the radiobutton should be insensitive: the default bindings will refuse to activate the widget and will ignore mouse button presses. In this state the \fB\-disabledforeground\fR and \fB\-background\fR options determine how the radiobutton is displayed. .OP \-tristateimage tristateImage TristateImage Specifies an image to display (in place of the \fB\-image\fR option) when the radiobutton is selected. This option is ignored unless the \fB\-image\fR option has been specified. .OP \-tristatevalue tristateValue Value Specifies the value that causes the radiobutton to display the multi-value selection, also known as the tri-state mode. Defaults to .QW "" . .OP \-value value Value Specifies value to store in the button's associated variable whenever this button is selected. .OP \-variable variable Variable Specifies the name of a global variable to set whenever this button is selected. Changes in this variable also cause the button to select or deselect itself. Defaults to the value \fBselectedButton\fR. .OP \-width width Width Specifies a desired width for the button. If an image or bitmap is being displayed in the button, the value is in screen units (i.e. any of the forms acceptable to \fBTk_GetPixels\fR); for text it is in characters. If this option is not specified, the button's desired width is computed from the size of the image or bitmap or text being displayed in it. .BE .SH DESCRIPTION .PP The \fBradiobutton\fR command creates a new window (given by the \fIpathName\fR argument) and makes it into a radiobutton widget. Additional options, described above, may be specified on the command line or in the option database to configure aspects of the radiobutton such as its colors, font, text, and initial relief. The \fBradiobutton\fR command returns its \fIpathName\fR argument. At the time this command is invoked, there must not exist a window named \fIpathName\fR, but \fIpathName\fR's parent must exist. .PP A radiobutton is a widget that displays a textual string, bitmap or image and a diamond or circle called an \fIindicator\fR. If text is displayed, it must all be in a single font, but it can occupy multiple lines on the screen (if it contains newlines or if wrapping occurs because of the \fB\-wraplength\fR option) and one of the characters may optionally be underlined using the \fB\-underline\fR option. A radiobutton has all of the behavior of a simple button: it can display itself in either of three different ways, according to the \fB\-state\fR option; it can be made to appear raised, sunken, or flat; it can be made to flash; and it invokes a Tcl command whenever mouse button 1 is clicked over the check button. .PP In addition, radiobuttons can be \fIselected\fR. If a radiobutton is selected, the indicator is normally drawn with a selected appearance, and a Tcl variable associated with the radiobutton is set to a particular value (normally 1). Under Unix, the indicator is drawn with a sunken relief and a special color. Under Windows, the indicator is drawn with a round mark inside. If the radiobutton is not selected, then the indicator is drawn with a deselected appearance, and the associated variable is set to a different value (typically 0). The indicator is drawn without a round mark inside. Typically, several radiobuttons share a single variable and the value of the variable indicates which radiobutton is to be selected. When a radiobutton is selected it sets the value of the variable to indicate that fact; each radiobutton also monitors the value of the variable and automatically selects and deselects itself when the variable's value changes. If the variable's value matches the \fB\-tristatevalue\fR, then the radiobutton is drawn using the tri-state mode. This mode is used to indicate mixed or multiple values. (This is used when the radiobutton represents the state of multiple items.) By default the variable \fBselectedButton\fR is used; its contents give the name of the button that is selected, or the empty string if no button associated with that variable is selected. The name of the variable for a radiobutton, plus the variable to be stored into it, may be modified with options on the command line or in the option database. Configuration options may also be used to modify the way the indicator is displayed (or whether it is displayed at all). By default a radiobutton is configured to select itself on button clicks. .SH "WIDGET COMMAND" .PP The \fBradiobutton\fR command creates a new Tcl command whose name is \fIpathName\fR. This command may be used to invoke various operations on the widget. It has the following general form: .CS \fIpathName option \fR?\fIarg arg ...\fR? .CE \fIOption\fR and the \fIarg\fRs determine the exact behavior of the command. The following commands are possible for radiobutton widgets: .TP \fIpathName \fBcget\fR \fIoption\fR . Returns the current value of the configuration option given by \fIoption\fR. \fIOption\fR may have any of the values accepted by the \fBradiobutton\fR command. .TP \fIpathName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR? . Query or modify the configuration options of the widget. If no \fIoption\fR is specified, returns a list describing all of the available options for \fIpathName\fR (see \fBTk_ConfigureInfo\fR for information on the format of this list). If \fIoption\fR is specified with no \fIvalue\fR, the command returns a list describing the one named option (this list will be identical to the corresponding sublist of the value returned if no \fIoption\fR is specified). If one or more \fIoption\-value\fR pairs are specified, the command modifies the given widget option(s) to have the given value(s); in this case the command returns an empty string. \fIOption\fR may have any of the values accepted by the \fBradiobutton\fR command. .TP \fIpathName \fBdeselect\fR . Deselects the radiobutton and sets the associated variable to an empty string. If this radiobutton was not currently selected, the command has no effect. .TP \fIpathName \fBflash\fR . Flashes the radiobutton. This is accomplished by redisplaying the radiobutton several times, alternating between active and normal colors. At the end of the flash the radiobutton is left in the same normal/active state as when the command was invoked. This command is ignored if the radiobutton's state is \fBdisabled\fR. .TP \fIpathName \fBinvoke\fR . Does just what would have happened if the user invoked the radiobutton with the mouse: selects the button and invokes its associated Tcl command, if there is one. The return value is the return value from the Tcl command, or an empty string if there is no command associated with the radiobutton. This command is ignored if the radiobutton's state is \fBdisabled\fR. .TP \fIpathName \fBselect\fR . Selects the radiobutton and sets the associated variable to the value corresponding to this widget. .SH BINDINGS .PP Tk automatically creates class bindings for radiobuttons that give them the following default behavior: .IP [1] On Unix systems, a radiobutton activates whenever the mouse passes over it and deactivates whenever the mouse leaves the radiobutton. On Mac and Windows systems, when mouse button 1 is pressed over a radiobutton, the button activates whenever the mouse pointer is inside the button, and deactivates whenever the mouse pointer leaves the button. .IP [2] When mouse button 1 is pressed over a radiobutton it is invoked (it becomes selected and the command associated with the button is invoked, if there is one). .IP [3] When a radiobutton has the input focus, the space key causes the radiobutton to be invoked. .PP If the radiobutton's state is \fBdisabled\fR then none of the above actions occur: the radiobutton is completely non-responsive. .PP The behavior of radiobuttons can be changed by defining new bindings for individual widgets or by redefining the class bindings. .SH "SEE ALSO" checkbutton(n), labelframe(n), listbox(n), options(n), scale(n), ttk::radiobutton(n) .SH KEYWORDS radiobutton, widget '\" Local Variables: '\" mode: nroff '\" End: 6' href='#n116'>116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:    H5system.c
 *      Aug 21 2006
 *      Quincey Koziol <koziol@hdfgroup.org>
 *
 * Purpose:    System call wrapper implementations.
 *
 *-------------------------------------------------------------------------
 */

/****************/
/* Module Setup */
/****************/


/***********/
/* Headers */
/***********/
#include "H5private.h"        /* Generic Functions            */
#include "H5Eprivate.h"        /* Error handling              */
#include "H5Fprivate.h"        /* File access                */
#include "H5MMprivate.h"    /* Memory management            */


/****************/
/* Local Macros */
/****************/


/******************/
/* Local Typedefs */
/******************/


/********************/
/* Package Typedefs */
/********************/


/********************/
/* Local Prototypes */
/********************/


/*********************/
/* Package Variables */
/*********************/


/*****************************/
/* Library Private Variables */
/*****************************/


/*******************/
/* Local Variables */
/*******************/

/* Track whether tzset routine was called */
static hbool_t H5_ntzset = FALSE;


/*-------------------------------------------------------------------------
 * Function:  HDfprintf
 *
 * Purpose:  Prints the optional arguments under the control of the format
 *    string FMT to the stream STREAM.  This function takes the
 *    same format as fprintf(3c) with a few added features:
 *
 *    The conversion modifier `H' refers to the size of an
 *    `hsize_t' or `hssize_t' type.  For instance, "0x%018Hx"
 *    prints an `hsize_t' value as a hex number right justified and
 *    zero filled in an 18-character field.
 *
 *    The conversion `a' refers to an `haddr_t' type.
 *
 * Return:  Success:  Number of characters printed
 *
 *    Failure:  -1
 *
 * Programmer:  Robb Matzke
 *              Thursday, April  9, 1998
 *
 *-------------------------------------------------------------------------
 */
/* Disable warning for "format not a string literal" here -QAK */
/*
 *      This pragma only needs to surround the fprintf() calls with
 *      format_templ in the code below, but early (4.4.7, at least) gcc only
 *      allows diagnostic pragmas to be toggled outside of functions.
 */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
int
HDfprintf(FILE *stream, const char *fmt, ...)
{
    int    n=0, nout = 0;
    int    fwidth, prec;
    int    zerofill;
    int    leftjust;
    int    plussign;
    int    ldspace;
    int    prefix;
    char  modifier[8];
    int    conv;
    char  *rest, format_templ[128];
    int    len;
    const char  *s;
    va_list  ap;

    HDassert(stream);
    HDassert(fmt);

    HDva_start (ap, fmt);
    while (*fmt) {
        fwidth = prec = 0;
        zerofill = 0;
        leftjust = 0;
        plussign = 0;
        prefix = 0;
        ldspace = 0;
        modifier[0] = '\0';

        if ('%'==fmt[0] && '%'==fmt[1]) {
            HDputc ('%', stream);
            fmt += 2;
            nout++;
        } else if ('%'==fmt[0]) {
            s = fmt + 1;

            /* Flags */
            while(HDstrchr("-+ #", *s)) {
                switch(*s) {
                    case '-':
                        leftjust = 1;
                        break;

                    case '+':
                        plussign = 1;
                        break;

                    case ' ':
                        ldspace = 1;
                        break;

                    case '#':
                        prefix = 1;
                        break;

                    default:
                        HDassert(0 && "Unknown format flag");
                } /* end switch */ /*lint !e744 Switch statement doesn't _need_ default */
                s++;
            } /* end while */

            /* Field width */
            if(HDisdigit(*s)) {
                zerofill = ('0' == *s);
                fwidth = (int)HDstrtol (s, &rest, 10);
                s = rest;
            } /* end if */
            else if ('*'==*s) {
                fwidth = HDva_arg(ap, int);
                if(fwidth < 0) {
                    leftjust = 1;
                    fwidth = -fwidth;
                }
                s++;
            }

            /* Precision */
            if('.'==*s) {
                s++;
                if(HDisdigit(*s)) {
                    prec = (int)HDstrtol(s, &rest, 10);
                    s = rest;
                } else if('*'==*s) {
                    prec = HDva_arg(ap, int);
                    s++;
                }
                if(prec < 1)
                    prec = 1;
            }

            /* Extra type modifiers */
            if(HDstrchr("zZHhlqLI", *s)) {
                switch(*s) {
                    /*lint --e{506} Don't issue warnings about constant value booleans */
                    /*lint --e{774} Don't issue warnings boolean within 'if' always evaluates false/true */
                    case 'H':
                        if(sizeof(hsize_t) < sizeof(long))
                            modifier[0] = '\0';
                        else if(sizeof(hsize_t) == sizeof(long)) {
                            HDstrncpy(modifier, "l", sizeof(modifier));
                            modifier[sizeof(modifier) - 1] = '\0';
                        } /* end if */
                        else {
                            HDstrncpy(modifier, H5_PRINTF_LL_WIDTH, sizeof(modifier));
                            modifier[sizeof(modifier) - 1] = '\0';
                        } /* end else */
                        break;

                    case 'Z':
                    case 'z':
                        if(sizeof(size_t) < sizeof(long))
                            modifier[0] = '\0';
                        else if(sizeof(size_t) == sizeof(long)) {
                            HDstrncpy(modifier, "l", sizeof(modifier));
                            modifier[sizeof(modifier) - 1] = '\0';
                        } /* end if */
                        else {
                            HDstrncpy(modifier, H5_PRINTF_LL_WIDTH, sizeof(modifier));
                            modifier[sizeof(modifier) - 1] = '\0';
                        } /* end else */
                        break;

                    default:
                        /* Handle 'I64' modifier for Microsoft's "__int64" type */
                        if(*s=='I' && *(s+1)=='6' && *(s+2)=='4') {
                            modifier[0] = *s;
                            modifier[1] = *(s+1);
                            modifier[2] = *(s+2);
                            modifier[3] = '\0';
                            s += 2; /* Increment over 'I6', the '4' is taken care of below */
                        } /* end if */
                        else {
                            /* Handle 'll' for long long types */
                            if(*s=='l' && *(s+1)=='l') {
                                modifier[0] = *s;
                                modifier[1] = *s;
                                modifier[2] = '\0';
                                s++; /* Increment over first 'l', second is taken care of below */
                            } /* end if */
                            else {
                                modifier[0] = *s;
                                modifier[1] = '\0';
                            } /* end else */
                        } /* end else */
                        break;
                }
                s++;
            }

            /* Conversion */
            conv = *s++;

            /* Create the format template */
            len = 0;
            len += HDsnprintf(format_templ, (sizeof(format_templ) - (size_t)(len + 1)), "%%%s%s%s%s%s", (leftjust ? "-" : ""),
                    (plussign ? "+" : ""), (ldspace ? " " : ""),
                    (prefix ? "#" : ""), (zerofill ? "0" : ""));
            if(fwidth > 0)
                len += HDsnprintf(format_templ + len, (sizeof(format_templ) - (size_t)(len + 1)), "%d", fwidth);
            if(prec > 0)
                len += HDsnprintf(format_templ + len, (sizeof(format_templ) - (size_t)(len + 1)), ".%d", prec);
            if(*modifier)
                len += HDsnprintf(format_templ + len, (sizeof(format_templ) - (size_t)(len + 1)), "%s", modifier);
            HDsnprintf(format_templ + len, (sizeof(format_templ) - (size_t)(len + 1)), "%c", conv);

            /* Conversion */
            switch (conv) {
                case 'd':
                case 'i':
                    if(!HDstrcmp(modifier, "h")) {
                        short x = (short)HDva_arg(ap, int);
                        n = fprintf(stream, format_templ, x);
                    } else if(!*modifier) {
                        int x = HDva_arg(ap, int);
                        n = fprintf(stream, format_templ, x);
                    } else if(!HDstrcmp(modifier, "l")) {
                        long x = HDva_arg(ap, long);
                        n = fprintf(stream, format_templ, x);
                    } else {
                        int64_t x = HDva_arg(ap, int64_t);
                        n = fprintf(stream, format_templ, x);
                    }
                    break;

                case 'o':
                case 'u':
                case 'x':
                case 'X':
                    if(!HDstrcmp(modifier, "h")) {
                        unsigned short x = (unsigned short)HDva_arg(ap, unsigned int);
                        n = fprintf(stream, format_templ, x);
                    } else if(!*modifier) {
                        unsigned int x = HDva_arg(ap, unsigned int);
                        n = fprintf(stream, format_templ, x);
                    } else if(!HDstrcmp(modifier, "l")) {
                        unsigned long x = HDva_arg(ap, unsigned long);
                        n = fprintf(stream, format_templ, x);
                    } else {
                        uint64_t x = HDva_arg(ap, uint64_t);
                        n = fprintf(stream, format_templ, x);
                    }
                    break;

                case 'f':
                case 'e':
                case 'E':
                case 'g':
                case 'G':
                    if(!HDstrcmp(modifier, "h")) {
                        float x = (float)HDva_arg(ap, double);
                        n = fprintf(stream, format_templ, (double)x);
                    } else if(!*modifier || !HDstrcmp(modifier, "l")) {
                        double x = HDva_arg(ap, double);
                        n = fprintf(stream, format_templ, x);
                    } else {
                    /*
                    * Some compilers complain when `long double' and
                    * `double' are the same thing.
                    */
#if H5_SIZEOF_LONG_DOUBLE != H5_SIZEOF_DOUBLE
                        long double x = HDva_arg(ap, long double);
                        n = fprintf(stream, format_templ, x);
#else
                        double x = HDva_arg(ap, double);
                        n = fprintf(stream, format_templ, x);
#endif
                    }
                    break;

                case 'a':
                    {
                        haddr_t x = HDva_arg(ap, haddr_t);

                        if(H5F_addr_defined(x)) {
                            len = 0;
                            len += HDsnprintf(format_templ, (sizeof(format_templ) - (size_t)(len + 1)), "%%%s%s%s%s%s",
                                (leftjust ? "-" : ""), (plussign ? "+" : ""),
                                (ldspace ? " " : ""), (prefix ? "#" : ""),
                                (zerofill ? "0" : ""));
                            if(fwidth > 0)
                                len += HDsnprintf(format_templ + len, (sizeof(format_templ) - (size_t)(len + 1)), "%d", fwidth);

                            /*lint --e{506} Don't issue warnings about constant value booleans */
                            /*lint --e{774} Don't issue warnings boolean within 'if' always evaluates false/true */
                            if(sizeof(x) == H5_SIZEOF_INT) {
                                HDstrncat(format_templ, "u", (sizeof(format_templ) - (size_t)(len + 1)));
                                len++;
                            } /* end if */
                            else if(sizeof(x) == H5_SIZEOF_LONG) {
                                HDstrncat(format_templ, "lu", (sizeof(format_templ) - (size_t)(len + 1)));
                                len++;
                            } /* end if */
                            else if(sizeof(x) == H5_SIZEOF_LONG_LONG) {
                                HDstrncat(format_templ, H5_PRINTF_LL_WIDTH, (sizeof(format_templ) - (size_t)(len + 1)));
                                len += (int)sizeof(H5_PRINTF_LL_WIDTH);
                                HDstrncat(format_templ, "u", (sizeof(format_templ) - (size_t)(len + 1)));
                                len++;
                            }
                            n = fprintf(stream, format_templ, x);
                        } else {
                            len = 0;
                            HDstrncpy(format_templ, "%", (sizeof(format_templ) - (size_t)(len + 1)));
                            len++;
                            if(leftjust) {
                                HDstrncat(format_templ, "-", (sizeof(format_templ) - (size_t)(len + 1)));
                                len++;
                            } /* end if */
                            if(fwidth)
                                len += HDsnprintf(format_templ + len, (sizeof(format_templ) - (size_t)(len + 1)),  "%d", fwidth);
                            HDstrncat(format_templ, "s", (sizeof(format_templ) - (size_t)(len + 1)));
                            fprintf(stream, format_templ, "UNDEF");
                        }
                    }
                    break;

                case 'c':
                    {
                        char x = (char)HDva_arg(ap, int);
                        n = fprintf(stream, format_templ, x);
                    }
                    break;

                case 's':
                case 'p':
                    {
                        char *x = HDva_arg(ap, char*);
                        n = fprintf(stream, format_templ, x);
                    }
                    break;

                case 'n':
                    format_templ[HDstrlen(format_templ) - 1] = 'u';
                    n = fprintf(stream, format_templ, nout);
                    break;

                case 't':
                    {
                        htri_t tri_var = HDva_arg(ap, htri_t);

                        if(tri_var > 0)
                            fprintf(stream, "TRUE");
                        else if(!tri_var)
                            fprintf(stream, "FALSE");
                        else
                            fprintf(stream, "FAIL(%d)", (int)tri_var);
                    }
                    break;

                default:
                    HDfputs(format_templ, stream);
                    n = (int)HDstrlen(format_templ);
                    break;
            }
            nout += n;
            fmt = s;
        } else {
            HDputc(*fmt, stream);
            fmt++;
            nout++;
        }
    }
    HDva_end(ap);
    return nout;
} /* end HDfprintf() */
#pragma GCC diagnostic pop


/*-------------------------------------------------------------------------
 * Function:  HDstrtoll
 *
 * Purpose:  Converts the string S to an int64_t value according to the
 *    given BASE, which must be between 2 and 36 inclusive, or be
 *    the special value zero.
 *
 *    The string must begin with an arbitrary amount of white space
 *    (as determined by isspace(3c)) followed by a single optional
 *              `+' or `-' sign.  If BASE is zero or 16 the string may then
 *    include a `0x' or `0X' prefix, and the number will be read in
 *    base 16; otherwise a zero BASE is taken as 10 (decimal)
 *    unless the next character is a `0', in which case it is taken
 *    as 8 (octal).
 *
 *    The remainder of the string is converted to an int64_t in the
 *    obvious manner, stopping at the first character which is not
 *    a valid digit in the given base.  (In bases above 10, the
 *    letter `A' in either upper or lower case represetns 10, `B'
 *    represents 11, and so forth, with `Z' representing 35.)
 *
 *    If REST is not null, the address of the first invalid
 *    character in S is stored in *REST.  If there were no digits
 *    at all, the original value of S is stored in *REST.  Thus, if
 *    *S is not `\0' but **REST is `\0' on return the entire string
 *    was valid.
 *
 * Return:  Success:  The result.
 *
 *    Failure:  If the input string does not contain any
 *        digits then zero is returned and REST points
 *        to the original value of S.  If an overflow
 *        or underflow occurs then the maximum or
 *        minimum possible value is returned and the
 *        global `errno' is set to ERANGE.  If BASE is
 *        incorrect then zero is returned.
 *
 * Programmer:  Robb Matzke
 *              Thursday, April  9, 1998
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
#ifndef HDstrtoll
int64_t
HDstrtoll(const char *s, const char **rest, int base)
{
    int64_t  sign=1, acc=0;
    hbool_t  overflow = FALSE;

    errno = 0;
    if (!s || (base && (base<2 || base>36))) {
        if (rest)
            *rest = s;
        return 0;
    }

    /* Skip white space */
    while (HDisspace (*s)) s++;

    /* Optional minus or plus sign */
    if ('+'==*s) {
        s++;
    }
    else if ('-'==*s) {
        sign = -1;
        s++;
    }

    /* Zero base prefix */
    if (0==base && '0'==*s && ('x'==s[1] || 'X'==s[1])) {
        base = 16;
        s += 2;
    }
    else if (0==base && '0'==*s) {
        base = 8;
        s++;
    }
    else if (0==base) {
        base = 10;
    }

    /* Digits */
    while ((base<=10 && *s>='0' && *s<'0'+base) ||
     (base>10 && ((*s>='0' && *s<='9') ||
      (*s>='a' && *s<'a'+base-10) ||
      (*s>='A' && *s<'A'+base-10)))) {
        if (!overflow) {
            int64_t digit = 0;

            if (*s>='0' && *s<='9')
                digit = *s - '0';
            else if (*s>='a' && *s<='z')
                digit = (*s-'a')+10;
            else
                digit = (*s-'A')+10;

            if (acc*base+digit < acc) {
                overflow = TRUE;
            }
            else {
                acc = acc*base + digit;
            }
        }
        s++;
    }

    /* Overflow */
    if (overflow) {
        if (sign>0) {
            acc = ((uint64_t)1<<(8*sizeof(int64_t)-1))-1;
        }
        else {
            acc = (int64_t)((uint64_t)1<<(8*sizeof(int64_t)-1));
        }
        errno = ERANGE;
    }

    /* Return values */
    acc *= sign;
    if (rest)
        *rest = s;
    return acc;
} /* end HDstrtoll() */
#endif

/*-------------------------------------------------------------------------
 * Function:  HDrand/HDsrand
 *
 * Purpose:  Wrapper function for rand.  If rand_r exists on this system,
 *     use it.
 *
 *     Wrapper function for srand.  If rand_r is available, it will keep
 *     track of the seed locally instead of using srand() which modifies
 *     global state and can break other programs.
 *
 * Return:  Success:  Random number from 0 to RAND_MAX
 *
 *    Failure:  Cannot fail.
 *
 * Programmer:  Leon Arber
 *              March 6, 2006.
 *
 *-------------------------------------------------------------------------
 */
#ifdef H5_HAVE_RAND_R

static unsigned int g_seed = 42;

int HDrand(void)
{
    return rand_r(&g_seed);
}

void HDsrand(unsigned int seed)
{
    g_seed = seed;
}
#endif /* H5_HAVE_RAND_R */



/*-------------------------------------------------------------------------
 * Function:    Pflock
 *
 * Purpose:     Wrapper function for POSIX systems where flock(2) is not
 *              available.
 *
 * Return:      Success:    0
 *              Failure:    -1
 *
 *-------------------------------------------------------------------------
 */
/* NOTE: Compile this all the time on POSIX systems, even when flock(2) is
 *       present so that it's less likely to become dead code.
 */
#ifdef H5_HAVE_FCNTL
int
Pflock(int fd, int operation) {

    struct flock    flk;

    /* Set the lock type */
    if(operation & LOCK_UN)
        flk.l_type = F_UNLCK;
    else if(operation & LOCK_SH)
        flk.l_type = F_RDLCK;
    else
        flk.l_type = F_WRLCK;

    /* Set the other flock struct values */
    flk.l_whence = SEEK_SET;
    flk.l_start = 0;
    flk.l_len = 0;              /* to EOF */
    flk.l_pid = 0;              /* not used with set */

    /* Lock or unlock */
    if(HDfcntl(fd, F_SETLK, flk) < 0)
        return -1;

    return 0;

} /* end Pflock() */
#endif /* H5_HAVE_FCNTL */


/*-------------------------------------------------------------------------
 * Function:    Nflock
 *
 * Purpose:     Wrapper function for systems where no file locking is
 *              available.
 *
 * Return:      Failure:    -1 (always fails)
 *
 *-------------------------------------------------------------------------
 */
int H5_ATTR_CONST
Nflock(int H5_ATTR_UNUSED fd, int H5_ATTR_UNUSED operation) {
    /* just fail */
    return -1;
} /* end Nflock() */


/*-------------------------------------------------------------------------
 * Function:    H5_make_time
 *
 * Purpose:    Portability routine to abstract converting a 'tm' struct into
 *        a time_t value.
 *
 * Note:    This is a little problematic because mktime() operates on
 *        local times.  We convert to local time and then figure out the
 *        adjustment based on the local time zone and daylight savings
 *        setting.
 *
 * Return:    Success:  The value of timezone
 *        Failure:  -1
 *
 * Programmer:  Quincey Koziol
 *              November 18, 2015
 *
 *-------------------------------------------------------------------------
 */
time_t
H5_make_time(struct tm *tm)
{
    time_t the_time;    /* The converted time */
#if defined(H5_HAVE_VISUAL_STUDIO) && (_MSC_VER >= 1900)  /* VS 2015 */
    /* In gcc and in Visual Studio prior to VS 2015 'timezone' is a global
     * variable declared in time.h. That variable was deprecated and in
     * VS 2015 is removed, with _get_timezone replacing it.
     */
    long timezone = 0;
#endif /* defined(H5_HAVE_VISUAL_STUDIO) && (_MSC_VER >= 1900) */
    time_t ret_value;   /* Return value */

    FUNC_ENTER_NOAPI_NOINIT

    /* Sanity check */
    HDassert(tm);

    /* Initialize timezone information */
    if(!H5_ntzset) {
        HDtzset();
        H5_ntzset = TRUE;
    } /* end if */

    /* Perform base conversion */
    if((time_t)-1 == (the_time = HDmktime(tm)))
        HGOTO_ERROR(H5E_INTERNAL, H5E_CANTCONVERT, FAIL, "badly formatted modification time message")

    /* Adjust for timezones */
#if defined(H5_HAVE_TM_GMTOFF)
    /* BSD-like systems */
    the_time += tm->tm_gmtoff;
#elif defined(H5_HAVE_TIMEZONE)
#if defined(H5_HAVE_VISUAL_STUDIO) && (_MSC_VER >= 1900)  /* VS 2015 */
    /* In gcc and in Visual Studio prior to VS 2015 'timezone' is a global
     * variable declared in time.h. That variable was deprecated and in
     * VS 2015 is removed, with _get_timezone replacing it.
     */
    _get_timezone(&timezone);
#endif /* defined(H5_HAVE_VISUAL_STUDIO) && (_MSC_VER >= 1900) */

    the_time -= timezone - (tm->tm_isdst ? 3600 : 0);
#else
    /*
     * The catch-all.  If we can't convert a character string universal
     * coordinated time to a time_t value reliably then we can't decode the
     * modification time message. This really isn't as bad as it sounds -- the
     * only way a user can get the modification time is from our internal
     * query routines, which can gracefully recover.
     */
    HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL, "unable to obtain local timezone information")
#endif

    /* Set return value */
    ret_value = the_time;

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5_make_time() */

#ifdef H5_HAVE_WIN32_API

/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosecond units */
#define _W32_FT_OFFSET (116444736000000000ULL)


/*-------------------------------------------------------------------------
 * Function:  Wgettimeofday
 *
 * Purpose:  Wrapper function for gettimeofday on Windows systems
 *
 *     This function can get the time as well as a timezone
 *
 * Return:  0
 *
 *      This implementation is taken from the Cygwin source distribution at
 *          src/winsup/mingw/mingwex/gettimeofday.c
 *
 *      The original source code was contributed by
 *          Danny Smith <dannysmith@users.sourceforge.net>
 *      and released in the public domain.
 *
 * Programmer:  Scott Wegner
 *              May 19, 2009
 *
 *-------------------------------------------------------------------------
 */
int
Wgettimeofday(struct timeval *tv, struct timezone *tz)
{
  union {
    unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
    FILETIME ft;
  }  _now;

    static int tzsetflag;

    if(tv) {
      GetSystemTimeAsFileTime (&_now.ft);
      tv->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
      tv->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
    }

    if(tz) {
        if(!tzsetflag) {
            _tzset();
            tzsetflag = 1;
        }
        tz->tz_minuteswest = _timezone / 60;
        tz->tz_dsttime = _daylight;
    }

  /* Always return 0 as per Open Group Base Specifications Issue 6.
     Do not set errno on error.  */
  return 0;
} /* end Wgettimeofday() */


/*-------------------------------------------------------------------------
 * Function:    Wsetenv
 *
 * Purpose:     Wrapper function for setenv on Windows systems.
 *              Interestingly, getenv *is* available in the Windows
 *              POSIX layer, just not setenv.
 *
 * Return:      Success:    0
 *              Failure:    non-zero error code
 *
 * Programmer:  Dana Robinson
 *              February 2016
 *
 *-------------------------------------------------------------------------
 */
int
Wsetenv(const char *name, const char *value, int overwrite)
{
    size_t bufsize;
    errno_t err;

    /* If we're not overwriting, check if the environment variable exists.
     * If it does (i.e.: the required buffer size to store the variable's
     * value is non-zero), then return an error code.
     */
    if(!overwrite) {
        err = getenv_s(&bufsize, NULL, 0, name);
        if (err || bufsize)
            return (int)err;
    } /* end if */

    return (int)_putenv_s(name, value);
} /* end Wsetenv() */

#ifdef H5_HAVE_WINSOCK2_H
#pragma comment(lib, "advapi32.lib")
#endif

#define WloginBuffer_count 256
static char Wlogin_buffer[WloginBuffer_count];

char*
Wgetlogin()
{

#ifdef H5_HAVE_WINSOCK2_H
    long bufferCount = WloginBuffer_count;
    if (GetUserName(Wlogin_buffer, &bufferCount) == 0)
        return (Wlogin_buffer);
    else
#endif /* H5_HAVE_WINSOCK2_H */
        return NULL;
}

int c99_snprintf(char* str, size_t size, const char* format, ...)
{
    int count;
    va_list ap;

    HDva_start(ap, format);
    count = c99_vsnprintf(str, size, format, ap);
    HDva_end(ap);

    return count;
}

int c99_vsnprintf(char* str, size_t size, const char* format, va_list ap)
{
    int count = -1;

    if (size != 0)
        count = _vsnprintf_s(str, size, _TRUNCATE, format, ap);
    if (count == -1)