Source Code 1992 March/Source_Code_CD-ROM_Walnut_Creek_March_1992.iso/usenet/altsrcs/2/2797

Internet Message Format | 1991-02-20 | 60.7 KB

From: [e-mail] (Guido van Rossum)
Newsgroups: alt.sources
Subject: Python 0.9.1 part 05/21
Message-ID: <[e-mail]>
Date: 19 Feb 91 17:41:32 GMT

: This is a shell archive.
: Extract with 'sh this_file'.
:
: Extract part 01 first since it makes all directories
echo 'Start of pack.out, part 05 out of 21:'
if test -s 'demo/sgi/audio_stdwin/README'
then echo '*** I will not over-write existing file demo/sgi/audio_stdwin/README'
else
echo 'x - demo/sgi/audio_stdwin/README'
sed 's/^X//' > 'demo/sgi/audio_stdwin/README' << 'EOF'
XThree programs that provide a user interface based upon STDWIN to the
Xaudio device of the SGI 4D/25.  These scripts also demonstrate the power
Xof a set of window interface classes implemented in Python that simplify
Xthe construction of all sorts of buttons, etc.
X
Xjukebox        Browses a directory full of sound samples and lets you
X        play selected ones.  (Probably not fully functional, it
X        requires a conversion program.)
X
Xrec        A tape recorder that lets you record a sound sample,
X        play it back, and save it to a file.  Various options to
X        set sampling rate, volume etc.  When idle it doubles
X        as a VU meter.
X
Xvumeter        A VU meter that displays a history of the volume of
X        sound recently sampled from the microphone.
EOF
fi
if test -s 'src/panelmodule.c'
then echo '*** I will not over-write existing file src/panelmodule.c'
else
echo 'x - src/panelmodule.c'
sed 's/^X//' > 'src/panelmodule.c' << 'EOF'
X/***********************************************************
XCopyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
XNetherlands.
X
X                        All Rights Reserved
X
XPermission to use, copy, modify, and distribute this software and its
Xdocumentation for any purpose and without fee is hereby granted,
Xprovided that the above copyright notice appear in all copies and that
Xboth that copyright notice and this permission notice appear in
Xsupporting documentation, and that the names of Stichting Mathematisch
XCentrum or CWI not be used in advertising or publicity pertaining to
Xdistribution of the software without specific, written prior permission.
X
XSTICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
XTHIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
XFITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
XFOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
XWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
XACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
XOF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
X
X******************************************************************/
X
X/* Panel module.
X   Interface to the NASA Ames "panel library" for the SGI Graphics Library
X   by David Tristram.
X
X   NOTE: the panel library dumps core if you don't create a window before
X   calling pnl.mkpanel().  A call to gl.winopen() suffices.
X   If you don't want a window to be created, call gl.noport() before
X   gl.winopen().
X*/
X
X#include <gl.h>
X#include <device.h>
X#include <panel.h>
X
X#include "allobjects.h"
X#include "import.h"
X#include "modsupport.h"
X#include "cgensupport.h"
X
X
X/* The offsetof() macro calculates the offset of a structure member
X   in its structure.  Unfortunately this cannot be written down portably,
X   hence it is standardized by ANSI C.  For pre-ANSI C compilers,
X   we give a version here that works usually (but watch out!): */
X
X#ifndef offsetof
X#define offsetof(type, member) ( (int) & ((type*)0) -> member )
X#endif
X
X
X/* Panel objects */
X
Xtypedef struct {
X    OB_HEAD
X    Panel *ob_panel;
X    object *ob_paneldict;
X} panelobject;
X
Xextern typeobject Paneltype; /* Really static, forward */
X
X#define is_panelobject(v) ((v)->ob_type == &Paneltype)
X
X
X/* Actuator objects */
X
Xtypedef struct {
X    OB_HEAD
X    Actuator *ob_actuator;
X} actuatorobject;
X
Xextern typeobject Actuatortype; /* Really static, forward */
X
X#define is_actuatorobject(v) ((v)->ob_type == &Actuatortype)
X
Xstatic object *newactuatorobject(); /* Forward */
X
X
X/* Since we allow different types of members than the functions from
X   structmember.c, the memberlist stuff is replicated here.
X   (Historically, it originated in this file and later became a generic
X   feature.) */
X
X/* An array of memberlist structures defines the name, type and offset
X   of selected members of a C structure.  These can be read by
X   panel_getmember() and set by panel_setmember() (except if their
X   READONLY flag is set).  The array must be terminated with an entry
X   whose name pointer is NULL. */
X
Xstruct memberlist {
X    char *name;
X    int type;
X    int offset;
X    int readonly;
X};
X
X/* Types */
X#define T_SHORT        0
X#define T_DEVICE    T_SHORT
X#define T_LONG        1
X#define T_INT        T_LONG
X#define T_BOOL        T_LONG
X#define T_FLOAT        2
X#define T_COORD        T_FLOAT
X#define T_STRING    3
X#define T_FUNC        4
X#define T_ACTUATOR    5
X
X/* Readonly flag */
X#define READONLY    1
X#define RO        READONLY        /* Shorthand */
X
Xstatic object *
Xpanel_getmember(addr, mlist, name)
X    char *addr;
X    struct memberlist *mlist;
X    char *name;
X{
X    object *v;
X    register struct memberlist *l;
X
X    for (l = mlist; l->name != NULL; l++) {
X        if (strcmp(l->name, name) == 0) {
X            addr += l->offset;
X            switch (l->type) {
X            case T_SHORT:
X                v = newintobject((long) *(short*)addr);
X                break;
X            case T_LONG:
X                v = newintobject(*(long*)addr);
X                break;
X            case T_FLOAT:
X                v = newfloatobject(*(float*)addr);
X                break;
X            case T_STRING:
X                if (*(char**)addr == NULL) {
X                    INCREF(None);
X                    v = None;
X                }
X                else
X                    v = newstringobject(*(char**)addr);
X                break;
X            case T_ACTUATOR:
X                v = newactuatorobject(*(Actuator**)addr);
X                break;
X            default:
X                err_badarg();
X                v = NULL;
X            }
X            return v;
X        }
X    }
X    err_setstr(NameError, name);
X    return NULL;
X}
X
X/* Attempt to set a member.  Return: 0 if OK; 1 if not found; -1 if error */
X
Xstatic int
Xpanel_setmember(addr, mlist, name, v)
X    char *addr;
X    struct memberlist *mlist;
X    char *name;
X    object *v;
X{
X    register struct memberlist *l;
X
X    for (l = mlist; l->name != NULL; l++) {
X        if (strcmp(l->name, name) == 0) {
X            if (l->readonly) {
X                err_setstr(TypeError, "read-only member");
X                return -1;
X            }
X            addr += l->offset;
X            switch (l->type) {
X            case T_SHORT:
X                if (!is_intobject(v)) {
X                    err_setstr(TypeError, "int expected");
X                    return -1;
X                }
X                *(short*)addr = getintvalue(v);
X                break;
X            case T_LONG:
X                if (!is_intobject(v)) {
X                    err_setstr(TypeError, "int expected");
X                    return -1;
X                }
X                *(long*)addr = getintvalue(v);
X                break;
X            case T_FLOAT:
X                if (is_intobject(v))
X                    *(float*)addr = getintvalue(v);
X                else if (is_floatobject(v))
X                    *(float*)addr = getfloatvalue(v);
X                else {
X                    err_setstr(TypeError,"float expected");
X                    return -1;
X                }
X                break;
X            case T_STRING:
X                /* XXX Should free(*(char**)addr) here
X                   but it's dangerous since we don't know
X                   if we set the label ourselves */
X                if (v == None)
X                    *(char**)addr = NULL;
X                else if (!is_stringobject(v)) {
X                    err_setstr(TypeError,
X                            "string expected");
X                    return -1;
X                }
X                else
X                    *(char**)addr =
X                        strdup(getstringvalue(v));
X                break;
X            case T_ACTUATOR:
X                if (v == None)
X                    *(Actuator**)addr = NULL;
X                else if (!is_actuatorobject(v)) {
X                    err_setstr(TypeError,
X                            "actuator expected");
X                    return -1;
X                }
X                else
X                    *(Actuator**)addr =
X                        ((actuatorobject *)v)->ob_actuator;
X                break;
X            default:
X                err_setstr(SystemError, "unknown member type");
X                return -1;
X            }
X            return 0; /* Found it */
X        }
X    }
X
X    return 1; /* Not found */
X}
X
X
X/* Panel object methods */
X
Xstatic object *
Xpanel_addpanel(self, args)
X    panelobject *self;
X    object *args;
X{
X    if (!getnoarg(args))
X        return NULL;
X    pnl_addpanel(self->ob_panel);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xpanel_endgroup(self, args)
X    panelobject *self;
X    object *args;
X{
X    if (!getnoarg(args))
X        return NULL;
X    pnl_endgroup(self->ob_panel);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xpanel_fixpanel(self, args)
X    panelobject *self;
X    object *args;
X{
X    if (!getnoarg(args))
X        return NULL;
X    pnl_fixpanel(self->ob_panel);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xpanel_strwidth(self, args)
X    panelobject *self;
X    object *args;
X{
X    object *v;
X    double width;
X    if (!getstrarg(args, &v))
X        return NULL;
X    width = pnl_strwidth(self->ob_panel, getstringvalue(v));
X    return newfloatobject(width);
X}
X
Xstatic struct methodlist panel_methods[] = {
X    {"addpanel",        panel_addpanel},
X    {"endgroup",        panel_endgroup},
X    {"fixpanel",        panel_fixpanel},
X    {"strwidth",        panel_strwidth},
X    {NULL,            NULL}        /* sentinel */
X};
X
Xstatic object *
Xnewpanelobject()
X{
X    panelobject *p;
X    p = NEWOBJ(panelobject, &Paneltype);
X    if (p == NULL)
X        return NULL;
X    p->ob_panel = pnl_mkpanel();
X    if ((p->ob_paneldict = newdictobject()) == NULL) {
X        DECREF(p);
X        return NULL;
X    }
X    return (object *)p;
X}
X
Xstatic void
Xpanel_dealloc(p)
X    panelobject *p;
X{
X    pnl_delpanel(p->ob_panel);
X    if (p->ob_paneldict != NULL)
X        DECREF(p->ob_paneldict);
X    DEL(p);
X}
X
X
X/* Table of panel members */
X
X#define PANOFF(member) offsetof(Panel, member)
X
Xstatic struct memberlist panel_memberlist[] = {
X    {"id",        T_SHORT,    PANOFF(id),        READONLY},
X    {"a",        T_ACTUATOR,    PANOFF(a),        READONLY},
X    {"al",        T_ACTUATOR,    PANOFF(al),        READONLY},
X    {"lastgroup",    T_ACTUATOR,    PANOFF(lastgroup),    READONLY},
X
X    {"active",    T_BOOL,        PANOFF(active)},
X    {"selectable",    T_BOOL,        PANOFF(selectable)},
X
X    {"x",        T_LONG,        PANOFF(x)},
X    {"y",        T_LONG,        PANOFF(y)},
X    {"w",        T_LONG,        PANOFF(w)},
X    {"h",        T_LONG,        PANOFF(h)},
X
X    {"minx",    T_COORD,    PANOFF(minx)},
X    {"maxx",    T_COORD,    PANOFF(maxx)},
X    {"miny",    T_COORD,    PANOFF(miny)},
X    {"maxy",    T_COORD,    PANOFF(maxy)},
X
X    {"cw",        T_COORD,    PANOFF(cw)},
X    {"ch",        T_COORD,    PANOFF(ch)},
X
X    {"gid",        T_LONG,        PANOFF(gid),        READONLY},
X    {"usergid",    T_LONG,        PANOFF(usergid),    READONLY},
X
X    {"vobj",    T_LONG,        PANOFF(vobj),        READONLY},
X    {"ppu",        T_FLOAT,    PANOFF(ppu)},
X
X    {"label",    T_STRING,    PANOFF(label)},
X
X    /* Panel callbacks are not supported */
X
X    {"visible",    T_BOOL,        PANOFF(visible)},
X    {"somedirty",    T_INT,        PANOFF(somedirty)},
X    {"dirtycnt",    T_INT,        PANOFF(dirtycnt)},
X
X    /* T_PANEL is not supported */
X    /*
X    {"next",    T_PANEL,    PANOFF(next),        READONLY},
X    */
X
X    {NULL,        0,        0}        /* Sentinel */
X};
X
Xstatic object *
Xpanel_getattr(p, name)
X    panelobject *p;
X    char *name;
X{
X    object *v;
X
X    v = dictlookup(p->ob_paneldict, name);
X    if (v != NULL) {
X        INCREF(v);
X        return v;
X    }
X
X    v = findmethod(panel_methods, (object *)p, name);
X    if (v != NULL)
X        return v;
X    err_clear();
X    return panel_getmember((char *)p->ob_panel, panel_memberlist, name);
X}
X
Xstatic int
Xpanel_setattr(p, name, v)
X    panelobject *p;
X    char *name;
X    object *v;
X{
X    int err;
X
X    /* We don't allow deletion of attributes */
X    if (v == NULL) {
X        err_setstr(TypeError, "read-only panel attribute");
X        return -1;
X    }
X    err = panel_setmember((char *)p->ob_panel, panel_memberlist, name, v);
X    if (err != 1)
X        return err;
X    return dictinsert(p->ob_paneldict, name, v);
X}
X
Xstatic typeobject Paneltype = {
X    OB_HEAD_INIT(&Typetype)
X    0,            /*ob_size*/
X    "panel",        /*tp_name*/
X    sizeof(panelobject),    /*tp_size*/
X    0,            /*tp_itemsize*/
X    /* methods */
X    panel_dealloc,        /*tp_dealloc*/
X    0,            /*tp_print*/
X    panel_getattr,        /*tp_getattr*/
X    panel_setattr,        /*tp_setattr*/
X    0,            /*tp_compare*/
X    0,            /*tp_repr*/
X};
X
X
X/* Descriptions of actuator-specific data members */
X
Xstruct memberlist slider_spec[] = {
X    {"mode",    T_INT,        offsetof(Slider, mode)},
X    {"finefactor",    T_FLOAT,    offsetof(Slider, finefactor)},
X    {"differentialfactor",
X            T_FLOAT,    offsetof(Slider, differentialfactor)},
X    {"valsave",    T_FLOAT,    offsetof(Slider, valsave),    RO},
X    {"wsave",    T_COORD,    offsetof(Slider, wsave)},
X    {"bh",        T_COORD,    offsetof(Slider, bh)},
X    {NULL}
X};
X
X#define palette_spec slider_spec
X
Xstruct memberlist puck_spec[] = {
X    /* Actuators already have members x and y, so the Puck's x and y
X       have different names */
X    {"puck_x",    T_FLOAT,    offsetof(Puck, x)},
X    {"puck_y",    T_FLOAT,    offsetof(Puck, y)},
X    {NULL}
X};
X
Xstruct memberlist dial_spec[] = {
X    {"mode",    T_INT,        offsetof(Dial, mode)},
X    {"finefactor",    T_FLOAT,    offsetof(Dial, finefactor)},
X    {"valsave",    T_FLOAT,    offsetof(Dial, valsave),    RO},
X    {"wsave",    T_COORD,    offsetof(Dial, wsave)},
X    {"winds",    T_FLOAT,    offsetof(Dial, winds)},
X    {NULL}
X};
X
Xstruct memberlist slideroid_spec[] = {
X    {"mode",    T_INT,        offsetof(Slideroid, mode)},
X    {"finemode",    T_BOOL,        offsetof(Slideroid, finemode)},
X    {"resetmode",    T_BOOL,        offsetof(Slideroid, resetmode)},
X    /* XXX Can't do resettarget (pointer to float) */
X    /* XXX This makes resetval pretty useless... */
X    /*
X    {"resetval",    T_FLOAT,    offsetof(Slideroid, resetval)},
X    */
X    {"valsave",    T_FLOAT,    offsetof(Slideroid, valsave),    RO},
X    {"wsave",    T_COORD,    offsetof(Slideroid, wsave)},
X    {NULL}
X};
X
Xstruct memberlist stripchart_spec[] = {
X    {"firstpt",    T_INT,        offsetof(Stripchart, firstpt),    RO},
X    {"lastpt",    T_INT,        offsetof(Stripchart, lastpt),    RO},
X    {"Bind_Low",    T_BOOL,        offsetof(Stripchart, Bind_Low)},
X    {"Bind_High",    T_BOOL,        offsetof(Stripchart, Bind_High)},
X    /* XXX Can't do y (array of floats) */
X    {"lowlabel",    T_ACTUATOR,    offsetof(Stripchart, lowlabel), RO},
X    {"highlabel",    T_ACTUATOR,    offsetof(Stripchart, highlabel), RO},
X    {NULL}
X};
X
Xstruct memberlist typein_spec[] = {
X    /* Note: these should be readonly after the actuator is added
X       to a panel */
X    {"str",        T_STRING,    offsetof(Typein, str)},
X    {"len",        T_INT,        offsetof(Typein, len)},
X    {NULL}
X};
X
Xstruct memberlist typeout_spec[] = {
X    {"mode",    T_INT,        offsetof(Typeout, mode)},
X    /* XXX The buffer is managed by the actuator; but how do we
X       add text? */
X    {"buf",        T_STRING,    offsetof(Typeout, buf),    READONLY},
X    {"delimstr",    T_STRING,    offsetof(Typeout, delimstr)},
X    {"start",    T_INT,        offsetof(Typeout, start)},
X    {"dot",        T_INT,        offsetof(Typeout, dot)},
X    {"mark",    T_INT,        offsetof(Typeout, mark)},
X    {"col",        T_INT,        offsetof(Typeout, col)},
X    {"lin",        T_INT,        offsetof(Typeout, lin)},
X    {"len",        T_INT,        offsetof(Typeout, len)},
X    {"size",    T_INT,        offsetof(Typeout, size)},
X    {NULL}
X};
X
Xstruct memberlist mouse_spec[] = {
X    /* Actuators already have members x and y, so the Mouse's x and y
X       have different names */
X    {"mouse_x",    T_FLOAT,    offsetof(Mouse, x)},
X    {"mouse_y",    T_FLOAT,    offsetof(Mouse, y)},
X    {NULL}
X};
X
X#define MULOFF(member)    offsetof(Multislider, member)
X
Xstruct memberlist multislider_spec[] = {
X    {"mode",    T_INT,        MULOFF(mode)},
X    {"n",        T_INT,        MULOFF(n)},
X    {"finefactor",    T_FLOAT,    MULOFF(finefactor)},
X    {"wsave",    T_COORD,    MULOFF(wsave)},
X    {"sa",        T_ACTUATOR,    MULOFF(sa)},
X    {"bh",        T_COORD,    MULOFF(bh)},
X    {"clrx",    T_COORD,    MULOFF(clrx)},
X    {"clry",    T_COORD,    MULOFF(clry)},
X    {"clrw",    T_COORD,    MULOFF(clrw)},
X    {"clrh",    T_COORD,    MULOFF(clrh)},
X    /* XXX acttype? */
X    {NULL}
X};
X
X/* XXX Still to do:
X    Frame
X    Icon
X    Cycle
X    Scroll
X    Menu
X*/
X
X/* List of known actuator initializer functions */
X
Xstruct {
X    char *name;
X    void (*func)();
X    struct memberlist *spec;
X} initializerlist[] = {
X    {"analog_bar",            pnl_analog_bar},
X    {"analog_meter",        pnl_analog_meter},
X    {"button",            pnl_button},
X    {"cycle",            pnl_cycle},
X    /* Doesn't exist: */
X/*    {"dhslider",            pnl_dhslider, slider_spec},    */
X    {"dial",            pnl_dial, dial_spec},
X    {"down_arrow_button",        pnl_down_arrow_button},
X    {"down_double_arrow_button",    pnl_down_double_arrow_button},
X    {"dvslider",            pnl_dvslider, slider_spec},
X    {"filled_hslider",        pnl_filled_hslider, slider_spec},
X    {"filled_slider",        pnl_filled_slider, slider_spec},
X    {"filled_vslider",        pnl_filled_vslider, slider_spec},
X    {"floating_puck",        pnl_floating_puck, puck_spec},
X    {"frame",            pnl_frame},
X    {"graphframe",            pnl_graphframe},
X    {"hmultislider",        pnl_hmultislider, multislider_spec},
X    {"hmultislider_bar",        pnl_hmultislider_bar},
X    {"hmultislider_open_bar",    pnl_hmultislider_open_bar},
X    {"hpalette",            pnl_hpalette, palette_spec},
X    {"hslider",            pnl_hslider, slider_spec},
X    {"icon",            pnl_icon},
X    {"icon_menu",            pnl_icon_menu},
X    {"label",            pnl_label},
X    {"left_arrow_button",        pnl_left_arrow_button},
X    {"left_double_arrow_button",    pnl_left_double_arrow_button},
X    {"menu",            pnl_menu},
X    {"menu_item",            pnl_menu_item},
X    {"meter",            pnl_meter},
X    {"mouse",            pnl_mouse, mouse_spec},
X    {"multislider",            pnl_multislider, multislider_spec},
X    {"multislider_bar",        pnl_multislider_bar},
X    {"multislider_open_bar",    pnl_multislider_open_bar},
X    {"palette",            pnl_palette, palette_spec},
X    {"puck",            pnl_puck, puck_spec},
X    {"radio_button",        pnl_radio_button},
X    {"radio_check_button",        pnl_radio_check_button},
X    {"right_arrow_button",        pnl_right_arrow_button},
X    {"right_double_arrow_button",    pnl_right_double_arrow_button},
X    {"rubber_puck",            pnl_rubber_puck, puck_spec},
X    {"scale_chart",            pnl_scale_chart, stripchart_spec},
X    {"scroll",            pnl_scroll},
X    {"signal",            pnl_signal},
X    {"slider",            pnl_slider, slider_spec},
X    {"slideroid",            pnl_slideroid, slideroid_spec},
X    {"strip_chart",            pnl_strip_chart, stripchart_spec},
X    {"sub_menu",            pnl_sub_menu},
X    {"toggle_button",        pnl_toggle_button},
X    {"typein",            pnl_typein, typein_spec},
X    {"typeout",            pnl_typeout, typeout_spec},
X    {"up_arrow_button",        pnl_up_arrow_button},
X    {"up_double_arrow_button",    pnl_up_double_arrow_button},
X    {"viewframe",            pnl_viewframe},
X    {"vmultislider",        pnl_vmultislider, multislider_spec},
X    {"vmultislider_bar",        pnl_vmultislider_bar},
X    {"vmultislider_open_bar",    pnl_vmultislider_open_bar},
X    {"vpalette",            pnl_vpalette, palette_spec},
X    {"vslider",            pnl_vslider, slider_spec},
X    {"wide_button",            pnl_wide_button},
X    {NULL,                NULL}        /* Sentinel */
X};
X
X
X/* Pseudo downfunc etc. */
X
Xstatic Actuator *down_pend, *active_pend, *up_pend;
X
Xstatic void
Xdownfunc(a)
X    Actuator *a;
X{
X    if (down_pend == NULL)
X        down_pend = a;
X}
X
Xstatic void
Xactivefunc(a)
X    Actuator *a;
X{
X    if (active_pend == NULL)
X        active_pend = a;
X}
X
Xstatic void
Xupfunc(a)
X    Actuator *a;
X{
X    if (up_pend == NULL)
X        up_pend = a;
X}
X
X
X/* Lay-out for the user data */
X
Xstruct userdata {
X    object *dict;    /* Dictionary object for additional attributes */
X    struct memberlist *spec;    /* Actuator-specific members */
X};
X
X
X/* Create a new actuator; the actuator type is given as a string */
X
Xstatic Actuator *
Xmakeactuator(name)
X    char *name;
X{
X    Actuator *act;
X    void (*initializer)() = NULL;
X    int i;
X    struct userdata *u;
X    for (i = 0; initializerlist[i].name != NULL; i++) {
X        if (strcmp(initializerlist[i].name, name) == 0) {
X            initializer = initializerlist[i].func;
X            break;
X        }
X    }
X    if (initializerlist[i].name == NULL) {
X        err_badarg();
X        return NULL;
X    }
X    u = NEW(struct userdata, 1);
X    if (u == NULL) {
X        err_nomem();
X        return NULL;
X    }
X    u->dict = NULL;
X    u->spec = initializerlist[i].spec;
X    act = pnl_mkact(initializer);
X    act->u = (char *)u;
X    act->downfunc = downfunc;
X    act->activefunc = activefunc;
X    act->upfunc = upfunc;
X    return act;
X}
X
X
X/* Actuator objects methods */
X
Xstatic object *
Xactuator_addact(self, args)
X    actuatorobject *self;
X    object *args;
X{
X    Panel *p;
X    if (!is_panelobject(args)) {
X        err_badarg();
X        return NULL;
X    }
X    p = ((panelobject *)args) -> ob_panel;
X    pnl_addact(self->ob_actuator, p);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xactuator_addsubact(self, args)
X    actuatorobject *self;
X    object *args;
X{
X    Actuator *a;
X    if (!is_actuatorobject(args)) {
X        err_badarg();
X        return NULL;
X    }
X    a = ((actuatorobject *)args) -> ob_actuator;
X    pnl_addsubact(self->ob_actuator, a);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xactuator_delact(self, args)
X    actuatorobject *self;
X    object *args;
X{
X    Panel *p;
X    if (!getnoarg(args))
X        return NULL;
X    pnl_delact(self->ob_actuator);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xactuator_fixact(self, args)
X    actuatorobject *self;
X    object *args;
X{
X    Panel *p;
X    if (!getnoarg(args))
X        return NULL;
X    pnl_fixact(self->ob_actuator);
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xactuator_tprint(self, args)
X    actuatorobject *self;
X    object *args;
X{
X    object *str;
X    if (self->ob_actuator->type != PNL_TYPEOUT) {
X        err_setstr(TypeError, "tprint for non-typeout panel");
X        return NULL;
X    }
X    if (!getstrarg(args, &str))
X        return NULL;
X    tprint(self->ob_actuator, getstringvalue(str));
X    /* XXX Can't turn tprint's errors into exceptions, sorry */
X    INCREF(None);
X    return None;
X}
X
Xstatic struct methodlist actuator_methods[] = {
X    {"addact",        actuator_addact},
X    {"addsubact",        actuator_addsubact},
X    {"delact",        actuator_delact},
X    {"fixact",        actuator_fixact},
X    {"tprint",        actuator_tprint},
X    {NULL,            NULL}        /* sentinel */
X};
X
Xstatic object *
Xnewactuatorobject(act)
X    Actuator *act;
X{
X    actuatorobject *a;
X    if (act == NULL) {
X        INCREF(None);
X        return None;
X    }
X    a = NEWOBJ(actuatorobject, &Actuatortype);
X    if (a == NULL)
X        return NULL;
X    a->ob_actuator = act;
X    return (object *)a;
X}
X
Xstatic void
Xactuator_dealloc(a)
X    actuatorobject *a;
X{
X    /* Do NOT delete the actuator; most actuator objects are created
X       to hold a temporary reference to an actuator, like one gotten
X       from pnl_dopanel(). */
X
X    DEL(a);
X}
X
X
X/* Table of actuator members */
X
X#define ACTOFF(member) offsetof(Actuator, member)
X
Xstruct memberlist act_memberlist[] = {
X    {"id",        T_SHORT,    ACTOFF(id),        READONLY},
X
X    /* T_PANEL is not defined */
X    /*
X    {"p",        T_PANEL,    ACTOFF(p),        READONLY},
X    */
X
X    {"pa",        T_ACTUATOR,    ACTOFF(pa),        READONLY},
X    {"ca",        T_ACTUATOR,    ACTOFF(ca),        READONLY},
X    {"al",        T_ACTUATOR,    ACTOFF(al),        READONLY},
X    {"na",        T_INT,        ACTOFF(na),        READONLY},
X    {"type",    T_INT,        ACTOFF(type),        READONLY},
X    {"active",    T_BOOL,        ACTOFF(active)},
X
X    {"x",        T_COORD,    ACTOFF(x)},
X    {"y",        T_COORD,    ACTOFF(y)},
X    {"w",        T_COORD,    ACTOFF(w)},
X    {"h",        T_COORD,    ACTOFF(h)},
X
X    {"lx",        T_COORD,    ACTOFF(lx)},
X    {"ly",        T_COORD,    ACTOFF(ly)},
X    {"lw",        T_COORD,    ACTOFF(lw)},
X    {"lh",        T_COORD,    ACTOFF(lh)},
X    {"ld",        T_COORD,    ACTOFF(ld)},
X
X    {"val",        T_FLOAT,    ACTOFF(val)},
X    {"extval",    T_FLOAT,    ACTOFF(extval)},
X    {"initval",    T_FLOAT,    ACTOFF(initval)},
X    {"maxval",    T_FLOAT,    ACTOFF(maxval)},
X    {"minval",    T_FLOAT,    ACTOFF(minval)},
X    {"scalefactor",    T_FLOAT,    ACTOFF(scalefactor)},
X
X    {"label",    T_STRING,    ACTOFF(label)},
X    {"key",        T_DEVICE,    ACTOFF(key)},
X    {"labeltype",    T_INT,        ACTOFF(labeltype)},
X
X    /* Internal callbacks are not supported;
X       user callbacks are treated special! */
X
X    {"dirtycnt",    T_INT,        ACTOFF(dirtycnt)},
X
X    /* members u and data are accessed differently */
X
X    {"automatic",    T_BOOL,        ACTOFF(automatic)},
X    {"selectable",    T_BOOL,        ACTOFF(selectable)},
X    {"visible",    T_BOOL,        ACTOFF(visible)},
X    {"beveled",    T_BOOL,        ACTOFF(beveled)},
X
X    {"group",    T_ACTUATOR,    ACTOFF(group),        READONLY},
X    {"next",    T_ACTUATOR,    ACTOFF(next),        READONLY},
X
X    {NULL,        0,        0}        /* Sentinel */
X};
X
X
X/* Potential name conflicts between attributes are solved as follows.
X   - Actuator-specific attributes always override generic attributes.
X   - When reading, the dictionary has overrides everything else;
X     when writing, everything else overrides the dictionary.
X   - When reading, methods are tried last.
X*/
X
Xstatic object *
Xactuator_getattr(a, name)
X    actuatorobject *a;
X    char *name;
X{
X    Actuator *act = a->ob_actuator;
X    struct userdata *u = (struct userdata *) act->u;
X    object *v;
X
X    if (u != NULL) {
X        /* 1. Try the dictionary */
X        if (u->dict != NULL) {
X            v = dictlookup(u->dict, name);
X            if (v != NULL) {
X                INCREF(v);
X                return v;
X            }
X        }
X
X        /* 2. Try actuator-specific attributes */
X        if (u->spec != NULL) {
X            v = panel_getmember(act->data, u->spec, name);
X            if (v != NULL)
X                return v;
X            err_clear();
X        }
X    }
X
X    /* 3. Try generic actuator attributes */
X    v = panel_getmember((char *)act, act_memberlist, name);
X    if (v != NULL)
X        return v;
X
X    /* 4. Try methods */
X    err_clear();
X    return findmethod(actuator_methods, (object *)a, name);
X}
X
Xstatic int
Xactuator_setattr(a, name, v)
X    actuatorobject *a;
X    char *name;
X    object *v;
X{
X    Actuator *act = a->ob_actuator;
X    struct userdata *u = (struct userdata *) act->u;
X    int err;
X
X    /* 0. We don't allow deletion of attributes */
X    if (v == NULL) {
X        err_setstr(TypeError, "read-only actuator attribute");
X        return -1;
X    }
X
X    /* 1. Try actuator-specific attributes */
X    if (u != NULL && u->spec != NULL) {
X        err = panel_setmember(act->data, u->spec, name, v);
X        if (err != 1)
X            return err;
X    }
X
X    /* 2. Try generic actuator attributes */
X    err = panel_setmember((char *)act, act_memberlist, name, v);
X    if (err != 1)
X        return err;
X
X    /* 3. Try the dictionary */
X    if (u != NULL) {
X        if (u->dict == NULL && (u->dict = newdictobject()) == NULL)
X            return NULL;
X        return dictinsert(u->dict, name, v);
X    }
X
X    err_setstr(NameError, name);
X    return -1;
X}
X
Xstatic int
Xactuator_compare(v, w)
X    actuatorobject *v, *w;
X{
X    long i = (long)v->ob_actuator;
X    long j = (long)w->ob_actuator;
X    return (i < j) ? -1 : (i > j) ? 1 : 0;
X}
X
Xstatic typeobject Actuatortype = {
X    OB_HEAD_INIT(&Typetype)
X    0,            /*ob_size*/
X    "actuator",        /*tp_name*/
X    sizeof(actuatorobject),    /*tp_size*/
X    0,            /*tp_itemsize*/
X    /* methods */
X    actuator_dealloc,    /*tp_dealloc*/
X    0,            /*tp_print*/
X    actuator_getattr,    /*tp_getattr*/
X    actuator_setattr,    /*tp_setattr*/
X    actuator_compare,    /*tp_compare*/
X    0,            /*tp_repr*/
X};
X
X
X/* The panel module itself */
X
Xstatic object *
Xmodule_mkpanel(self, args)
X    object *self;
X    object *args;
X{
X    if (!getnoarg(args))
X        return NULL;
X    return newpanelobject();
X}
X
Xstatic object *
Xmodule_mkact(self, args)
X    object *self;
X    object *args;
X{
X    object *v;
X    Actuator *a;
X    if (!getstrarg(args, &v))
X        return NULL;
X    a = makeactuator(getstringvalue(v));
X    if (a == NULL)
X        return NULL;
X    return newactuatorobject(a);
X}
X
Xstatic object *
Xmodule_dopanel(self, args)
X    object *self;
X    object *args;
X{
X    Actuator *a;
X    object *v, *w;
X    if (!getnoarg(args))
X        return NULL;
X    a = pnl_dopanel();
X    v = newtupleobject(4);
X    if (v == NULL)
X        return NULL;
X    settupleitem(v, 0, newactuatorobject(a));
X    settupleitem(v, 1, newactuatorobject(down_pend));
X    settupleitem(v, 2, newactuatorobject(active_pend));
X    settupleitem(v, 3, newactuatorobject(up_pend));
X    down_pend = active_pend = up_pend = NULL;
X    return v;
X}
X
Xstatic object *
Xmodule_drawpanel(self, args)
X    object *self;
X    object *args;
X{
X    if (!getnoarg(args))
X        return NULL;
X    pnl_drawpanel();
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xmodule_needredraw(self, args)
X    object *self;
X    object *args;
X{
X    if (!getnoarg(args))
X        return NULL;
X    pnl_needredraw();
X    INCREF(None);
X    return None;
X}
X
Xstatic object *
Xmodule_userredraw(self, args)
X    object *self;
X    object *args;
X{
X    short wid;
X    if (!getnoarg(args))
X        return NULL;
X    wid = pnl_userredraw();
X    return newintobject((long)wid);
X}
X
Xstatic object *
Xmodule_block(self, args)
X    object *self;
X    object *args;
X{
X    int flag;
X    if (!getintarg(args, &flag))
X        return NULL;
X    pnl_block = flag;
X    INCREF(None);
X    return None;
X}
X
Xstatic struct methodlist module_methods[] = {
X    {"block",        module_block},
X    {"dopanel",        module_dopanel},
X    {"drawpanel",        module_drawpanel},
X    {"mkpanel",        module_mkpanel},
X    {"mkact",        module_mkact},
X    {"needredraw",        module_needredraw},
X    {"userredraw",        module_userredraw},
X    {NULL,            NULL}        /* sentinel */
X};
X
Xvoid
Xinitpanel()
X{
X    /* Setting pnl_block to 1 would greatly reduce the CPU usage
X       of an idle application.  Unfortunately it also breaks our
X       little hacks to get callback functions in Python called.
X       So we clear pnl_block here.  You can set/clear pnl_block
X       from Python using pnl.block(flag).  It works if you have
X       no upfuncs. */
X    pnl_block = 0;
X    initmodule("pnl", module_methods);
X}
EOF
fi
if test -s 'src/regexp.c'
then echo '*** I will not over-write existing file src/regexp.c'
else
echo 'x - src/regexp.c'
sed 's/^X//' > 'src/regexp.c' << 'EOF'
X/***********************************************************
XCopyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
XNetherlands.
X
X                        All Rights Reserved
X
XPermission to use, copy, modify, and distribute this software and its
Xdocumentation for any purpose and without fee is hereby granted,
Xprovided that the above copyright notice appear in all copies and that
Xboth that copyright notice and this permission notice appear in
Xsupporting documentation, and that the names of Stichting Mathematisch
XCentrum or CWI not be used in advertising or publicity pertaining to
Xdistribution of the software without specific, written prior permission.
X
XSTICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
XTHIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
XFITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
XFOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
XWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
XACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
XOF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
X
X******************************************************************/
X
X/*
X * regcomp and regexec -- regsub and regerror are elsewhere
X *
X *    Copyright (c) 1986 by University of Toronto.
X *    Written by Henry Spencer.  Not derived from licensed software.
X#ifdef MULTILINE
X *    Changed by Guido van Rossum, CWI, Amsterdam
X *    for multi-line support.
X#endif
X *
X *    Permission is granted to anyone to use this software for any
X *    purpose on any computer system, and to redistribute it freely,
X *    subject to the following restrictions:
X *
X *    1. The author is not responsible for the consequences of use of
X *        this software, no matter how awful, even if they arise
X *        from defects in it.
X *
X *    2. The origin of this software must not be misrepresented, either
X *        by explicit claim or by omission.
X *
X *    3. Altered versions must be plainly marked as such, and must not
X *        be misrepresented as being the original software.
X *
X * Beware that some of this code is subtly aware of the way operator
X * precedence is structured in regular expressions.  Serious changes in
X * regular-expression syntax might require a total rethink.
X */
X#include <stdio.h>
X#include "PROTO.h"
X#include "malloc.h"
X#undef ANY /* Conflicting identifier defined in malloc.h */
X#include <string.h>        /* XXX Remove if not found */
X#include "regexp.h"
X#include "regmagic.h"
X
X#ifdef MULTILINE
X/*
X * Defining MULTILINE turns on the following changes in the semantics:
X * 1.    The '.' operator matches all characters except a newline.
X * 2.    The '^' operator matches at the beginning of the string or after
X *    a newline.  (Anchored matches are retried after each newline.)
X * 3.    The '$' operator matches at the end of the string or before
X *    a newline.
X * 4.    A '\' followed by an 'n' matches a newline.  (This is an
X *    unfortunate exception to the rule that '\' followed by a
X *    character matches that character...)
X *
X * Also, there is a new function reglexec(prog, string, offset)
X * which searches for a match starting at 'string+offset';
X * it differs from regexec(prog, string+offset) in assuming
X * that the line begins at 'string'.
X */
X#endif
X
X/*
X * The "internal use only" fields in regexp.h are present to pass info from
X * compile to execute that permits the execute phase to run lots faster on
X * simple cases.  They are:
X *
X * regstart    char that must begin a match; '\0' if none obvious
X * reganch    is the match anchored (at beginning-of-line only)?
X * regmust    string (pointer into program) that match must include, or NULL
X * regmlen    length of regmust string
X *
X * Regstart and reganch permit very fast decisions on suitable starting points
X * for a match, cutting down the work a lot.  Regmust permits fast rejection
X * of lines that cannot possibly match.  The regmust tests are costly enough
X * that regcomp() supplies a regmust only if the r.e. contains something
X * potentially expensive (at present, the only such thing detected is * or +
X * at the start of the r.e., which can involve a lot of backup).  Regmlen is
X * supplied because the test in regexec() needs it and regcomp() is computing
X * it anyway.
X */
X
X/*
X * Structure for regexp "program".  This is essentially a linear encoding
X * of a nondeterministic finite-state machine (aka syntax charts or
X * "railroad normal form" in parsing technology).  Each node is an opcode
X * plus a "next" pointer, possibly plus an operand.  "Next" pointers of
X * all nodes except BRANCH implement concatenation; a "next" pointer with
X * a BRANCH on both ends of it is connecting two alternatives.  (Here we
X * have one of the subtle syntax dependencies:  an individual BRANCH (as
X * opposed to a collection of them) is never concatenated with anything
X * because of operator precedence.)  The operand of some types of node is
X * a literal string; for others, it is a node leading into a sub-FSM.  In
X * particular, the operand of a BRANCH node is the first node of the branch.
X * (NB this is *not* a tree structure:  the tail of the branch connects
X * to the thing following the set of BRANCHes.)  The opcodes are:
X */
X
X/* definition    number    opnd?    meaning */
X#define    END    0    /* no    End of program. */
X#define    BOL    1    /* no    Match "" at beginning of line. */
X#define    EOL    2    /* no    Match "" at end of line. */
X#define    ANY    3    /* no    Match any one character. */
X#define    ANYOF    4    /* str    Match any character in this string. */
X#define    ANYBUT    5    /* str    Match any character not in this string. */
X#define    BRANCH    6    /* node    Match this alternative, or the next... */
X#define    BACK    7    /* no    Match "", "next" ptr points backward. */
X#define    EXACTLY    8    /* str    Match this string. */
X#define    NOTHING    9    /* no    Match empty string. */
X#define    STAR    10    /* node    Match this (simple) thing 0 or more times. */
X#define    PLUS    11    /* node    Match this (simple) thing 1 or more times. */
X#define    OPEN    20    /* no    Mark this point in input as start of #n. */
X            /*    OPEN+1 is number 1, etc. */
X#define    CLOSE    30    /* no    Analogous to OPEN. */
X
X/*
X * Opcode notes:
X *
X * BRANCH    The set of branches constituting a single choice are hooked
X *        together with their "next" pointers, since precedence prevents
X *        anything being concatenated to any individual branch.  The
X *        "next" pointer of the last BRANCH in a choice points to the
X *        thing following the whole choice.  This is also where the
X *        final "next" pointer of each individual branch points; each
X *        branch starts with the operand node of a BRANCH node.
X *
X * BACK        Normal "next" pointers all implicitly point forward; BACK
X *        exists to make loop structures possible.
X *
X * STAR,PLUS    '?', and complex '*' and '+', are implemented as circular
X *        BRANCH structures using BACK.  Simple cases (one character
X *        per match) are implemented with STAR and PLUS for speed
X *        and to minimize recursive plunges.
X *
X * OPEN,CLOSE    ...are numbered at compile time.
X */
X
X/*
X * A node is one char of opcode followed by two chars of "next" pointer.
X * "Next" pointers are stored as two 8-bit pieces, high order first.  The
X * value is a positive offset from the opcode of the node containing it.
X * An operand, if any, simply follows the node.  (Note that much of the
X * code generation knows about this implicit relationship.)
X *
X * Using two bytes for the "next" pointer is vast overkill for most things,
X * but allows patterns to get big without disasters.
X */
X#define    OP(p)    (*(p))
X#define    NEXT(p)    (((*((p)+1)&0377)<<8) + (*((p)+2)&0377))
X#define    OPERAND(p)    ((p) + 3)
X
X/*
X * See regmagic.h for one further detail of program structure.
X */
X
X
X/*
X * Utility definitions.
X */
X#ifndef CHARBITS
X#define    UCHARAT(p)    ((int)*(unsigned char *)(p))
X#else
X#define    UCHARAT(p)    ((int)*(p)&CHARBITS)
X#endif
X
X#define    FAIL(m)    { regerror(m); return(NULL); }
X#define    ISMULT(c)    ((c) == '*' || (c) == '+' || (c) == '?')
X#define    META    "^$.[()|?+*\\"
X
X/*
X * Flags to be passed up and down.
X */
X#define    HASWIDTH    01    /* Known never to match null string. */
X#define    SIMPLE        02    /* Simple enough to be STAR/PLUS operand. */
X#define    SPSTART        04    /* Starts with * or +. */
X#define    WORST        0    /* Worst case. */
X
X/*
X * Global work variables for regcomp().
X */
Xstatic char *regparse;        /* Input-scan pointer. */
Xstatic int regnpar;        /* () count. */
Xstatic char regdummy;
Xstatic char *regcode;        /* Code-emit pointer; ®dummy = don't. */
Xstatic long regsize;        /* Code size. */
X#ifdef MULTILINE
Xstatic int regnl;        /* '\n' detected. */
X#endif
X
X/*
X * Forward declarations for regcomp()'s friends.
X */
X#ifndef STATIC
X#define    STATIC    static
X#endif
XSTATIC char *reg();
XSTATIC char *regbranch();
XSTATIC char *regpiece();
XSTATIC char *regatom();
XSTATIC char *regnode();
XSTATIC char *regnext();
XSTATIC void regc();
XSTATIC void reginsert();
XSTATIC void regtail();
XSTATIC void regoptail();
X#ifdef STRCSPN
XSTATIC int strcspn();
X#endif
X
X/*
X - regcomp - compile a regular expression into internal code
X *
X * We can't allocate space until we know how big the compiled form will be,
X * but we can't compile it (and thus know how big it is) until we've got a
X * place to put the code.  So we cheat:  we compile it twice, once with code
X * generation turned off and size counting turned on, and once "for real".
X * This also means that we don't allocate space until we are sure that the
X * thing really will compile successfully, and we never have to move the
X * code and thus invalidate pointers into it.  (Note that it has to be in
X * one piece because free() must be able to free it all.)
X *
X * Beware that the optimization-preparation code in here knows about some
X * of the structure of the compiled regexp.
X */
Xregexp *
Xregcomp(exp)
Xchar *exp;
X{
X    register regexp *r;
X    register char *scan;
X    register char *longest;
X    register int len;
X    int flags;
X
X    if (exp == NULL)
X        FAIL("NULL argument");
X
X    /* First pass: determine size, legality. */
X    regparse = exp;
X    regnpar = 1;
X    regsize = 0L;
X    regcode = ®dummy;
X#ifdef MULTILINE
X    regnl = 0;
X#endif
X    regc(MAGIC);
X    if (reg(0, &flags) == NULL)
X        return(NULL);
X
X    /* Small enough for pointer-storage convention? */
X    if (regsize >= 32767L)        /* Probably could be 65535L. */
X        FAIL("regexp too big");
X
X    /* Allocate space. */
X    r = (regexp *)malloc(sizeof(regexp) + (unsigned)regsize);
X    if (r == NULL)
X        FAIL("out of space");
X
X    /* Second pass: emit code. */
X    regparse = exp;
X    regnpar = 1;
X    regcode = r->program;
X    regc(MAGIC);
X    if (reg(0, &flags) == NULL)
X        return(NULL);
X
X    /* Dig out information for optimizations. */
X    r->regstart = '\0';    /* Worst-case defaults. */
X    r->reganch = 0;
X    r->regmust = NULL;
X    r->regmlen = 0;
X    scan = r->program+1;            /* First BRANCH. */
X    if (OP(regnext(scan)) == END) {        /* Only one top-level choice. */
X        scan = OPERAND(scan);
X
X        /* Starting-point info. */
X        if (OP(scan) == EXACTLY)
X            r->regstart = *OPERAND(scan);
X        else if (OP(scan) == BOL)
X            r->reganch++;
X
X        /*
X         * If there's something expensive in the r.e., find the
X         * longest literal string that must appear and make it the
X         * regmust.  Resolve ties in favor of later strings, since
X         * the regstart check works with the beginning of the r.e.
X         * and avoiding duplication strengthens checking.  Not a
X         * strong reason, but sufficient in the absence of others.
X         */
X#ifdef MULTILINE
X        if ((flags&SPSTART) && !regnl) {
X#else
X        if (flags&SPSTART) {
X#endif
X            longest = NULL;
X            len = 0;
X            for (; scan != NULL; scan = regnext(scan))
X                if (OP(scan) == EXACTLY && strlen(OPERAND(scan)) >= len) {
X                    longest = OPERAND(scan);
X                    len = strlen(OPERAND(scan));
X                }
X            r->regmust = longest;
X            r->regmlen = len;
X        }
X    }
X
X    return(r);
X}
X
X/*
X - reg - regular expression, i.e. main body or parenthesized thing
X *
X * Caller must absorb opening parenthesis.
X *
X * Combining parenthesis handling with the base level of regular expression
X * is a trifle forced, but the need to tie the tails of the branches to what
X * follows makes it hard to avoid.
X */
Xstatic char *
Xreg(paren, flagp)
Xint paren;            /* Parenthesized? */
Xint *flagp;
X{
X    register char *ret;
X    register char *br;
X    register char *ender;
X    register int parno;
X    int flags;
X
X    *flagp = HASWIDTH;    /* Tentatively. */
X
X    /* Make an OPEN node, if parenthesized. */
X    if (paren) {
X        if (regnpar >= NSUBEXP)
X            FAIL("too many ()");
X        parno = regnpar;
X        regnpar++;
X        ret = regnode(OPEN+parno);
X    } else
X        ret = NULL;
X
X    /* Pick up the branches, linking them together. */
X    br = regbranch(&flags);
X    if (br == NULL)
X        return(NULL);
X    if (ret != NULL)
X        regtail(ret, br);    /* OPEN -> first. */
X    else
X        ret = br;
X    if (!(flags&HASWIDTH))
X        *flagp &= ~HASWIDTH;
X    *flagp |= flags&SPSTART;
X    while (*regparse == '|') {
X        regparse++;
X        br = regbranch(&flags);
X        if (br == NULL)
X            return(NULL);
X        regtail(ret, br);    /* BRANCH -> BRANCH. */
X        if (!(flags&HASWIDTH))
X            *flagp &= ~HASWIDTH;
X        *flagp |= flags&SPSTART;
X    }
X
X    /* Make a closing node, and hook it on the end. */
X    ender = regnode((paren) ? CLOSE+parno : END);
X    regtail(ret, ender);
X
X    /* Hook the tails of the branches to the closing node. */
X    for (br = ret; br != NULL; br = regnext(br))
X        regoptail(br, ender);
X
X    /* Check for proper termination. */
X    if (paren && *regparse++ != ')') {
X        FAIL("unmatched ()");
X    } else if (!paren && *regparse != '\0') {
X        if (*regparse == ')') {
X            FAIL("unmatched ()");
X        } else
X            FAIL("junk on end");    /* "Can't happen". */
X        /* NOTREACHED */
X    }
X
X    return(ret);
X}
X
X/*
X - regbranch - one alternative of an | operator
X *
X * Implements the concatenation operator.
X */
Xstatic char *
Xregbranch(flagp)
Xint *flagp;
X{
X    register char *ret;
X    register char *chain;
X    register char *latest;
X    int flags;
X
X    *flagp = WORST;        /* Tentatively. */
X
X    ret = regnode(BRANCH);
X    chain = NULL;
X    while (*regparse != '\0' && *regparse != '|' && *regparse != ')') {
X        latest = regpiece(&flags);
X        if (latest == NULL)
X            return(NULL);
X        *flagp |= flags&HASWIDTH;
X        if (chain == NULL)    /* First piece. */
X            *flagp |= flags&SPSTART;
X        else
X            regtail(chain, latest);
X        chain = latest;
X    }
X    if (chain == NULL)    /* Loop ran zero times. */
X        (void) regnode(NOTHING);
X
X    return(ret);
X}
X
X/*
X - regpiece - something followed by possible [*+?]
X *
X * Note that the branching code sequences used for ? and the general cases
X * of * and + are somewhat optimized:  they use the same NOTHING node as
X * both the endmarker for their branch list and the body of the last branch.
X * It might seem that this node could be dispensed with entirely, but the
X * endmarker role is not redundant.
X */
Xstatic char *
Xregpiece(flagp)
Xint *flagp;
X{
X    register char *ret;
X    register char op;
X    register char *next;
X    int flags;
X
X    ret = regatom(&flags);
X    if (ret == NULL)
X        return(NULL);
X
X    op = *regparse;
X    if (!ISMULT(op)) {
X        *flagp = flags;
X        return(ret);
X    }
X
X    if (!(flags&HASWIDTH) && op != '?')
X        FAIL("*+ operand could be empty");
X    *flagp = (op != '+') ? (WORST|SPSTART) : (WORST|HASWIDTH);
X
X    if (op == '*' && (flags&SIMPLE))
X        reginsert(STAR, ret);
X    else if (op == '*') {
X        /* Emit x* as (x&|), where & means "self". */
X        reginsert(BRANCH, ret);            /* Either x */
X        regoptail(ret, regnode(BACK));        /* and loop */
X        regoptail(ret, ret);            /* back */
X        regtail(ret, regnode(BRANCH));        /* or */
X        regtail(ret, regnode(NOTHING));        /* null. */
X    } else if (op == '+' && (flags&SIMPLE))
X        reginsert(PLUS, ret);
X    else if (op == '+') {
X        /* Emit x+ as x(&|), where & means "self". */
X        next = regnode(BRANCH);            /* Either */
X        regtail(ret, next);
X        regtail(regnode(BACK), ret);        /* loop back */
X        regtail(next, regnode(BRANCH));        /* or */
X        regtail(ret, regnode(NOTHING));        /* null. */
X    } else if (op == '?') {
X        /* Emit x? as (x|) */
X        reginsert(BRANCH, ret);            /* Either x */
X        regtail(ret, regnode(BRANCH));        /* or */
X        next = regnode(NOTHING);        /* null. */
X        regtail(ret, next);
X        regoptail(ret, next);
X    }
X    regparse++;
X    if (ISMULT(*regparse))
X        FAIL("nested *?+");
X
X    return(ret);
X}
X
X/*
X - regatom - the lowest level
X *
X * Optimization:  gobbles an entire sequence of ordinary characters so that
X * it can turn them into a single node, which is smaller to store and
X * faster to run.  Backslashed characters are exceptions, each becoming a
X * separate node; the code is simpler that way and it's not worth fixing.
X */
Xstatic char *
Xregatom(flagp)
Xint *flagp;
X{
X    register char *ret;
X    int flags;
X
X    *flagp = WORST;        /* Tentatively. */
X
X    switch (*regparse++) {
X    case '^':
X        ret = regnode(BOL);
X        break;
X    case '$':
X        ret = regnode(EOL);
X        break;
X    case '.':
X        ret = regnode(ANY);
X        *flagp |= HASWIDTH|SIMPLE;
X        break;
X    case '[': {
X            register int class;
X            register int classend;
X
X            if (*regparse == '^') {    /* Complement of range. */
X                ret = regnode(ANYBUT);
X                regparse++;
X            } else
X                ret = regnode(ANYOF);
X            if (*regparse == ']' || *regparse == '-')
X                regc(*regparse++);
X            while (*regparse != '\0' && *regparse != ']') {
X                if (*regparse == '-') {
X                    regparse++;
X                    if (*regparse == ']' || *regparse == '\0')
X                        regc('-');
X                    else {
X                        class = UCHARAT(regparse-2)+1;
X                        classend = UCHARAT(regparse);
X                        if (class > classend+1)
X                            FAIL("invalid [] range");
X                        for (; class <= classend; class++)
X                            regc(class);
X                        regparse++;
X                    }
X                } else
X                    regc(*regparse++);
X            }
X            regc('\0');
X            if (*regparse != ']')
X                FAIL("unmatched []");
X            regparse++;
X            *flagp |= HASWIDTH|SIMPLE;
X        }
X        break;
X    case '(':
X        ret = reg(1, &flags);
X        if (ret == NULL)
X            return(NULL);
X        *flagp |= flags&(HASWIDTH|SPSTART);
X        break;
X    case '\0':
X    case '|':
X    case ')':
X        FAIL("internal urp");    /* Supposed to be caught earlier. */
X        break;
X    case '?':
X    case '+':
X    case '*':
X        FAIL("?+* follows nothing");
X        break;
X    case '\\':
X        if (*regparse == '\0')
X            FAIL("trailing \\");
X        ret = regnode(EXACTLY);
X#ifdef MULTILINE
X        if (*regparse == 'n') {
X            regc('\n');
X            regparse++;
X            regnl++;
X        }
X        else
X#endif
X        regc(*regparse++);
X        regc('\0');
X        *flagp |= HASWIDTH|SIMPLE;
X        break;
X    default: {
X            register int len;
X            register char ender;
X
X            regparse--;
X            len = strcspn(regparse, META);
X            if (len <= 0)
X                FAIL("internal disaster");
X            ender = *(regparse+len);
X            if (len > 1 && ISMULT(ender))
X                len--;        /* Back off clear of ?+* operand. */
X            *flagp |= HASWIDTH;
X            if (len == 1)
X                *flagp |= SIMPLE;
X            ret = regnode(EXACTLY);
X            while (len > 0) {
X#ifdef MULTILINE
X                if (*regparse == '\n')
X                    regnl++;
X#endif
X                regc(*regparse++);
X                len--;
X            }
X            regc('\0');
X        }
X        break;
X    }
X
X    return(ret);
X}
X
X/*
X - regnode - emit a node
X */
Xstatic char *            /* Location. */
Xregnode(op)
Xchar op;
X{
X    register char *ret;
X    register char *ptr;
X
X    ret = regcode;
X    if (ret == ®dummy) {
X        regsize += 3;
X        return(ret);
X    }
X
X    ptr = ret;
X    *ptr++ = op;
X    *ptr++ = '\0';        /* Null "next" pointer. */
X    *ptr++ = '\0';
X    regcode = ptr;
X
X    return(ret);
X}
X
X/*
X - regc - emit (if appropriate) a byte of code
X */
Xstatic void
Xregc(b)
Xchar b;
X{
X    if (regcode != ®dummy)
X        *regcode++ = b;
X    else
X        regsize++;
X}
X
X/*
X - reginsert - insert an operator in front of already-emitted operand
X *
X * Means relocating the operand.
X */
Xstatic void
Xreginsert(op, opnd)
Xchar op;
Xchar *opnd;
X{
X    register char *src;
X    register char *dst;
X    register char *place;
X
X    if (regcode == ®dummy) {
X        regsize += 3;
X        return;
X    }
X
X    src = regcode;
X    regcode += 3;
X    dst = regcode;
X    while (src > opnd)
X        *--dst = *--src;
X
X    place = opnd;        /* Op node, where operand used to be. */
X    *place++ = op;
X    *place++ = '\0';
X    *place++ = '\0';
X}
X
X/*
X - regtail - set the next-pointer at the end of a node chain
X */
Xstatic void
Xregtail(p, val)
Xchar *p;
Xchar *val;
X{
X    register char *scan;
X    register char *temp;
X    register int offset;
X
X    if (p == ®dummy)
X        return;
X
X    /* Find last node. */
X    scan = p;
X    for (;;) {
X        temp = regnext(scan);
X        if (temp == NULL)
X            break;
X        scan = temp;
X    }
X
X    if (OP(scan) == BACK)
X        offset = scan - val;
X    else
X        offset = val - scan;
X    *(scan+1) = (offset>>8)&0377;
X    *(scan+2) = offset&0377;
X}
X
X/*
X - regoptail - regtail on operand of first argument; nop if operandless
X */
Xstatic void
Xregoptail(p, val)
Xchar *p;
Xchar *val;
X{
X    /* "Operandless" and "op != BRANCH" are synonymous in practice. */
X    if (p == NULL || p == ®dummy || OP(p) != BRANCH)
X        return;
X    regtail(OPERAND(p), val);
X}
X
X/*
X * regexec and friends
X */
X
X/*
X * Global work variables for regexec().
X */
Xstatic char *reginput;        /* String-input pointer. */
Xstatic char *regbol;        /* Beginning of input, for ^ check. */
Xstatic char **regstartp;    /* Pointer to startp array. */
Xstatic char **regendp;        /* Ditto for endp. */
X
X/*
X * Forwards.
X */
XSTATIC int regtry();
XSTATIC int regmatch();
XSTATIC int regrepeat();
X
X#ifdef DEBUG
Xint regnarrate = 0;
Xvoid regdump();
XSTATIC char *regprop();
X#endif
X
X/*
X - regexec - match a regexp against a string
X */
Xint
Xregexec(prog, string)
Xregister regexp *prog;
Xregister char *string;
X{
X    register char *s;
X    extern char *strchr();
X
X    /* Be paranoid... */
X    if (prog == NULL || string == NULL) {
X        regerror("NULL parameter");
X        return(0);
X    }
X
X#ifdef MULTILINE
X    /* Check for \n in string, and if so, call the more general routine. */
X    if (strchr(string, '\n') != NULL)
X        return reglexec(prog, string, 0);
X#endif
X
X    /* Check validity of program. */
X    if (UCHARAT(prog->program) != MAGIC) {
X        regerror("corrupted program");
X        return(0);
X    }
X
X    /* If there is a "must appear" string, look for it. */
X    if (prog->regmust != NULL) {
X        s = string;
X        while ((s = strchr(s, prog->regmust[0])) != NULL) {
X            if (strncmp(s, prog->regmust, prog->regmlen) == 0)
X                break;    /* Found it. */
X            s++;
X        }
X        if (s == NULL)    /* Not present. */
X            return(0);
X    }
X
X    /* Mark beginning of line for ^ . */
X    regbol = string;
X
X    /* Simplest case:  anchored match need be tried only once. */
X    if (prog->reganch)
X        return(regtry(prog, string));
X
X    /* Messy cases:  unanchored match. */
X    s = string;
X    if (prog->regstart != '\0')
X        /* We know what char it must start with. */
X        while ((s = strchr(s, prog->regstart)) != NULL) {
X            if (regtry(prog, s))
X                return(1);
X            s++;
X        }
X    else
X        /* We don't -- general case. */
X        do {
X            if (regtry(prog, s))
X                return(1);
X        } while (*s++ != '\0');
X
X    /* Failure. */
X    return(0);
X}
X
X#ifdef MULTILINE
X/*
X - reglexec - match a regexp against a long string buffer, starting at offset
X */
Xint
Xreglexec(prog, string, offset)
Xregister regexp *prog;
Xregister char *string;
X{
X    register char *s;
X    extern char *strchr();
X
X    /* Be paranoid... */
X    if (prog == NULL || string == NULL) {
X        regerror("NULL parameter");
X        return(0);
X    }
X
X    /* Check validity of program. */
X    if (UCHARAT(prog->program) != MAGIC) {
X        regerror("corrupted program");
X        return(0);
X    }
X
X    /* (Don't look for "must appear" string -- string can be long.) */
X
X    /* Mark beginning of line for ^ . */
X    regbol = string;
X
X    /* Apply offset.
X       Assume 0 <= offset <= strlen(string), but don't check,
X       as string can be long. */
X    s= string + offset;
X
X    /* Anchored match need be tried only at line starts. */
X    if (prog->reganch) {
X        while (!regtry(prog, s)) {
X            s = strchr(s, '\n');
X            if (s == NULL)
X                return(0);
X            s++;
X        }
X        return(1);
X    }
X
X    /* Messy cases:  unanchored match. */
X    if (prog->regstart != '\0')
X        /* We know what char it must start with. */
X        while ((s = strchr(s, prog->regstart)) != NULL) {
X            if (regtry(prog, s))
X                return(1);
X            s++;
X        }
X    else
X        /* We don't -- general case. */
X        do {
X            if (regtry(prog, s))
X                return(1);
X        } while (*s++ != '\0');
X
X    /* Failure. */
X    return(0);
X}
X#endif
X
X/*
X - regtry - try match at specific point
X */
Xstatic int            /* 0 failure, 1 success */
Xregtry(prog, string)
Xregexp *prog;
Xchar *string;
X{
X    register int i;
X    register char **sp;
X    register char **ep;
X
X    reginput = string;
X    regstartp = prog->startp;
X    regendp = prog->endp;
X
X    sp = prog->startp;
X    ep = prog->endp;
X    for (i = NSUBEXP; i > 0; i--) {
X        *sp++ = NULL;
X        *ep++ = NULL;
X    }
X    if (regmatch(prog->program + 1)) {
X        prog->startp[0] = string;
X        prog->endp[0] = reginput;
X        return(1);
X    } else
X        return(0);
X}
X
X/*
X - regmatch - main matching routine
X *
X * Conceptually the strategy is simple:  check to see whether the current
X * node matches, call self recursively to see whether the rest matches,
X * and then act accordingly.  In practice we make some effort to avoid
X * recursion, in particular by going through "ordinary" nodes (that don't
X * need to know whether the rest of the match failed) by a loop instead of
X * by recursion.
X */
Xstatic int            /* 0 failure, 1 success */
Xregmatch(prog)
Xchar *prog;
X{
X    register char *scan;    /* Current node. */
X    char *next;        /* Next node. */
X    extern char *strchr();
X
X    scan = prog;
X#ifdef DEBUG
X    if (scan != NULL && regnarrate)
X        fprintf(stderr, "%s(\n", regprop(scan));
X#endif
X    while (scan != NULL) {
X#ifdef DEBUG
X        if (regnarrate)
X            fprintf(stderr, "%s...\n", regprop(scan));
X#endif
X        next = regnext(scan);
X
X        switch (OP(scan)) {
X        case BOL:
X#ifdef MULTILINE
X            if (!(reginput == regbol ||
X                reginput > regbol && *(reginput-1) == '\n'))
X#else
X            if (reginput != regbol)
X#endif
X                return(0);
X            break;
X        case EOL:
X#ifdef MULTILINE
X            if (*reginput != '\0' && *reginput != '\n')
X#else
X            if (*reginput != '\0')
X#endif
X                return(0);
X            break;
X        case ANY:
X#ifdef MULTILINE
X            if (*reginput == '\0' || *reginput == '\n')
X#else
X            if (*reginput == '\0')
X#endif
X                return(0);
X            reginput++;
X            break;
X        case EXACTLY: {
X                register int len;
X                register char *opnd;
X
X                opnd = OPERAND(scan);
X                /* Inline the first character, for speed. */
X                if (*opnd != *reginput)
X                    return(0);
X                len = strlen(opnd);
X                if (len > 1 && strncmp(opnd, reginput, len) != 0)
X                    return(0);
X                reginput += len;
X            }
X            break;
X        case ANYOF:
X            if (*reginput == '\0' || strchr(OPERAND(scan), *reginput) == NULL)
X                return(0);
X            reginput++;
X            break;
X        case ANYBUT:
X#ifdef MULTILINE
X            if (*reginput == '\0' || *reginput == '\n' ||
X                strchr(OPERAND(scan), *reginput) != NULL)
X#else
X            if (*reginput == '\0' || strchr(OPERAND(scan), *reginput) != NULL)
X#endif
X                return(0);
X            reginput++;
X            break;
X        case NOTHING:
X            break;
X        case BACK:
X            break;
X        case OPEN+1:
X        case OPEN+2:
X        case OPEN+3:
X        case OPEN+4:
X        case OPEN+5:
X        case OPEN+6:
X        case OPEN+7:
X        case OPEN+8:
X        case OPEN+9: {
X                register int no;
X                register char *save;
X
X                no = OP(scan) - OPEN;
X                save = reginput;
X
X                if (regmatch(next)) {
X                    /*
X                     * Don't set startp if some later
X                     * invocation of the same parentheses
X                     * already has.
X                     */
X                    if (regstartp[no] == NULL)
X                        regstartp[no] = save;
X                    return(1);
X                } else
X                    return(0);
X            }
X            break;
X        case CLOSE+1:
X        case CLOSE+2:
X        case CLOSE+3:
X        case CLOSE+4:
X        case CLOSE+5:
X        case CLOSE+6:
X        case CLOSE+7:
X        case CLOSE+8:
X        case CLOSE+9: {
X                register int no;
X                register char *save;
X
X                no = OP(scan) - CLOSE;
X                save = reginput;
X
X                if (regmatch(next)) {
X                    /*
X                     * Don't set endp if some later
X                     * invocation of the same parentheses
X                     * already has.
X                     */
X                    if (regendp[no] == NULL)
X                        regendp[no] = save;
X                    return(1);
X                } else
X                    return(0);
X            }
X            break;
X        case BRANCH: {
X                register char *save;
X
X                if (OP(next) != BRANCH)        /* No choice. */
X                    next = OPERAND(scan);    /* Avoid recursion. */
X                else {
X                    do {
X                        save = reginput;
X                        if (regmatch(OPERAND(scan)))
X                            return(1);
X                        reginput = save;
X                        scan = regnext(scan);
X                    } while (scan != NULL && OP(scan) == BRANCH);
X                    return(0);
X                    /* NOTREACHED */
X                }
X            }
X            break;
X        case STAR:
X        case PLUS: {
X                register char nextch;
X                register int no;
X                register char *save;
X                register int min;
X
X                /*
X                 * Lookahead to avoid useless match attempts
X                 * when we know what character comes next.
X                 */
X                nextch = '\0';
X                if (OP(next) == EXACTLY)
X                    nextch = *OPERAND(next);
X                min = (OP(scan) == STAR) ? 0 : 1;
X                save = reginput;
X                no = regrepeat(OPERAND(scan));
X                while (no >= min) {
X                    /* If it could work, try it. */
X                    if (nextch == '\0' || *reginput == nextch)
X                        if (regmatch(next))
X                            return(1);
X                    /* Couldn't or didn't -- back up. */
X                    no--;
X                    reginput = save + no;
X                }
X                return(0);
X            }
X            break;
X        case END:
X            return(1);    /* Success! */
X            break;
X        default:
X            regerror("memory corruption");
X            return(0);
X            break;
X        }
X
X        scan = next;
X    }
X
X    /*
X     * We get here only if there's trouble -- normally "case END" is
X     * the terminating point.
X     */
X    regerror("corrupted pointers");
X    return(0);
X}
X
X/*
X - regrepeat - repeatedly match something simple, report how many
X */
Xstatic int
Xregrepeat(p)
Xchar *p;
X{
X    register int count = 0;
X    register char *scan;
X    register char *opnd;
X#ifdef MULTILINE
X    register char *eol;
X#endif
X
X    scan = reginput;
X    opnd = OPERAND(p);
X    switch (OP(p)) {
X    case ANY:
X#ifdef MULTILINE
X        if ((eol = strchr(scan, '\n')) != NULL) {
X            count += eol - scan;
X            scan = eol;
X            break;
X        }
X#endif
X        count = strlen(scan);
X        scan += count;
X        break;
X    case EXACTLY:
X        while (*opnd == *scan) {
X            count++;
X            scan++;
X        }
X        break;
X    case ANYOF:
X        while (*scan != '\0' && strchr(opnd, *scan) != NULL) {
X            count++;
X            scan++;
X        }
X        break;
X    case ANYBUT:
X#ifdef MULTILINE
X        while (*scan != '\0' && *scan != '\n' &&
X            strchr(opnd, *scan) == NULL) {
X#else
X        while (*scan != '\0' && strchr(opnd, *scan) == NULL) {
X#endif
X            count++;
X            scan++;
X        }
X        break;
X    default:        /* Oh dear.  Called inappropriately. */
X        regerror("internal foulup");
X        count = 0;    /* Best compromise. */
X        break;
X    }
X    reginput = scan;
X
X    return(count);
X}
X
X/*
X - regnext - dig the "next" pointer out of a node
X */
Xstatic char *
Xregnext(p)
Xregister char *p;
X{
X    register int offset;
X
X    if (p == ®dummy)
X        return(NULL);
X
X    offset = NEXT(p);
X    if (offset == 0)
X        return(NULL);
X
X    if (OP(p) == BACK)
X        return(p-offset);
X    else
X        return(p+offset);
X}
X
X#ifdef DEBUG
X
XSTATIC char *regprop();
X
X/*
X - regdump - dump a regexp onto stdout in vaguely comprehensible form
X */
Xvoid
Xregdump(r)
Xregexp *r;
X{
X    register char *s;
X    register char op = EXACTLY;    /* Arbitrary non-END op. */
X    register char *next;
X    extern char *strchr();
X
X
X    s = r->program + 1;
X    while (op != END) {    /* While that wasn't END last time... */
X        op = OP(s);
X        printf("%2d%s", (int)(s-r->program), regprop(s));    /* Where, what. */
X        next = regnext(s);
X        if (next == NULL)        /* Next ptr. */
X            printf("(0)");
X        else
X            printf("(%d)", (int)((s-r->program)+(next-s)));
X        s += 3;
X        if (op == ANYOF || op == ANYBUT || op == EXACTLY) {
X            /* Literal string, where present. */
X            while (*s != '\0') {
X#ifdef MULTILINE
X                if (*s == '\n')
X                    printf("\\n");
X                else
X#endif
X                putchar(*s);
X                s++;
X            }
X            s++;
X        }
X        putchar('\n');
X    }
X
X    /* Header fields of interest. */
X    if (r->regstart != '\0')
X        printf("start `%c' ", r->regstart);
X    if (r->reganch)
X        printf("anchored ");
X    if (r->regmust != NULL)
X        printf("must have \"%s\"", r->regmust);
X    printf("\n");
X}
X
X/*
X - regprop - printable representation of opcode
X */
Xstatic char *
Xregprop(op)
Xchar *op;
X{
X    register char *p;
X    static char buf[50];
X
X    (void) strcpy(buf, ":");
X
X    switch (OP(op)) {
X    case BOL:
X        p = "BOL";
X        break;
X    case EOL:
X        p = "EOL";
X        break;
X    case ANY:
X        p = "ANY";
X        break;
X    case ANYOF:
X        p = "ANYOF";
X        break;
X    case ANYBUT:
X        p = "ANYBUT";
X        break;
X    case BRANCH:
X        p = "BRANCH";
X        break;
X    case EXACTLY:
X        p = "EXACTLY";
X        break;
X    case NOTHING:
X        p = "NOTHING";
X        break;
X    case BACK:
X        p = "BACK";
X        break;
X    case END:
X        p = "END";
X        break;
X    case OPEN+1:
X    case OPEN+2:
X    case OPEN+3:
X    case OPEN+4:
X    case OPEN+5:
X    case OPEN+6:
X    case OPEN+7:
X    case OPEN+8:
X    case OPEN+9:
X        sprintf(buf+strlen(buf), "OPEN%d", (int)(OP(op)-OPEN));
X        p = NULL;
X        break;
X    case CLOSE+1:
X    case CLOSE+2:
X    case CLOSE+3:
X    case CLOSE+4:
X    case CLOSE+5:
X    case CLOSE+6:
X    case CLOSE+7:
X    case CLOSE+8:
X    case CLOSE+9:
X        sprintf(buf+strlen(buf), "CLOSE%d", (int)(OP(op)-CLOSE));
X        p = NULL;
X        break;
X    case STAR:
X        p = "STAR";
X        break;
X    case PLUS:
X        p = "PLUS";
X        break;
X    default:
X        regerror("corrupted opcode");
X        break;
X    }
X    if (p != NULL)
X        (void) strcat(buf, p);
X    return(buf);
X}
X#endif
X
X/*
X * The following is provided for those people who do not have strcspn() in
X * their C libraries.  They should get off their butts and do something
X * about it; at least one public-domain implementation of those (highly
X * useful) string routines has been published on Usenet.
X */
X#ifdef STRCSPN
X/*
X * strcspn - find length of initial segment of s1 consisting entirely
X * of characters not from s2
X */
X
Xstatic int
Xstrcspn(s1, s2)
Xchar *s1;
Xchar *s2;
X{
X    register char *scan1;
X    register char *scan2;
X    register int count;
X
X    count = 0;
X    for (scan1 = s1; *scan1 != '\0'; scan1++) {
X        for (scan2 = s2; *scan2 != '\0';)    /* ++ moved down. */
X            if (*scan1 == *scan2++)
X                return(count);
X        count++;
X    }
X    return(count);
X}
X#endif
EOF
fi
echo 'Part 05 out of 21 of pack.out complete.'
exit 0