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extra.c
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extra.c
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/*
* R : A Computer Language for Statistical Data Analysis
* file console.c
* Copyright (C) 1998--1999 Guido Masarotto and Brian Ripley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* extra commands for R */
#include <stdio.h>
#include "Defn.h"
#include "Fileio.h"
#include <dir.h>
#include <time.h>
#include <windows.h>
#include "graphapp/ga.h"
SEXP do_sysfile(SEXP call, SEXP op, SEXP args, SEXP env);
SEXP do_tempfile(SEXP call, SEXP op, SEXP args, SEXP env);
SEXP do_unlink(SEXP call, SEXP op, SEXP args, SEXP env);
SEXP do_helpstart(SEXP call, SEXP op, SEXP args, SEXP env);
SEXP do_helpitem(SEXP call, SEXP op, SEXP args, SEXP env);
static void changename(char *s,int maxlen)
{
char *p, *q;
char *l = "+-.";
int i;
for (p = s, i = 0; *p; p++) {
i += 1;
if (i > maxlen) {
*p = '\0';
break;
}
for (q = l; *q; q++)
if (*q == *p) {
*p = '_';
break;
}
}
}
char *to83name(char *fname)
{
static char shortname[MAX_PATH];
char fshortname[MAX_PATH];
char drv[MAX_PATH], dir[MAX_PATH], name[MAX_PATH], ext[MAX_PATH];
char ddrv[MAX_PATH], ddir[MAX_PATH], dname[MAX_PATH], dext[MAX_PATH];
_splitpath(fname, drv, dir, name, ext);
changename(name, 8);
if (strlen(ext) > 1)
changename(&ext[1], 3);
sprintf(shortname, "%s%s", name, ext);
strcpy(ddir, dir);
ddir[strlen(ddir) - 1] = '\0';
for (; strlen(ddir) > 0;) {
_splitpath(ddir, ddrv, dir, dname, dext);
changename(dname, 8);
if (strlen(ext) > 1)
changename(&dext[1], 3);
sprintf(fshortname, "%s%s/%s", dname, dext, shortname);
strcpy(shortname, fshortname);
strcpy(ddir, dir);
ddir[strlen(ddir) - 1] = '\0';
}
if (strlen(drv) > 0) {
sprintf(fshortname, "%s/%s", drv, shortname);
strcpy(shortname, fshortname);
} else if ((fname[0] == '/') || (fname[0] == '\\')) {
sprintf(fshortname, "/%s", shortname);
strcpy(shortname, fshortname);
}
return shortname;
}
/*
SEXP do_sysfile(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP ans;
SEXP tlist = R_NilValue, tchar;
char tmp[MAX_PATH], *p;
int done,handle,i,j,k;
struct _finddata_t fdd;
checkArity(op, args);
if( !isString(CAR(args)) || LENGTH(CAR(args)) != 1 )
errorcall(call, "invalid file name argument\n");
strcpy(tmp,CHAR(STRING(CAR(args))[0]));
if ( (handle = _findfirst(tmp,&fdd)) == -1) {
p=to83name(tmp);
handle = _findfirst(p,&fdd);
if (handle != -1) strcpy(tmp,p);
}
i = 0;
if (handle != -1) {
PROTECT(tlist);
for (k=strlen(tmp);k > 0; k--)
if ((tmp[k-1]=='/')||(tmp[k-1]=='\\')) break;
for(done=0;!done;done=_findnext(handle,&fdd)) {
if (strcmp(fdd.name,".") && strcmp(fdd.name,"..")){
tmp[k]='\0';
strcat(tmp,fdd.name);
tchar = mkChar(tmp);
UNPROTECT(1);
PROTECT(tlist = CONS(tchar, tlist));
i += 1;
}
}
_findclose(handle);
if (!i) UNPROTECT(1);
}
if (i) {
PROTECT(ans = allocVector(STRSXP, i));
for (j = (i - 1); j >= 0; j--) {
STRING(ans)[j] = CAR(tlist);
tlist = CDR(tlist);
}
UNPROTECT(2);
}
else {
PROTECT(ans = allocVector(STRSXP,1));
STRING(ans)[0]=mkChar("");
UNPROTECT(1);
}
return (ans);
}
*/
SEXP do_tempfile(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP ans;
char *tmp, tm[MAX_PATH], *tn;
checkArity(op, args);
PROTECT(ans = allocVector(STRSXP, 1));
if (!isString(CAR(args)) || LENGTH(CAR(args)) != 1)
errorcall(call, "invalid file name argument\n");
tn = CHAR(STRING(CAR(args))[0]);
/* try to get a new file name */
tmp = getenv("TMP");
if (!tmp)
tmp = getenv("TEMP");
if (!tmp)
getenv("R_HOME");
if ((strlen(tmp) + strlen(tn)) <= MAX_PATH - 8) {
sprintf(tm, "%s\\%sXXXXXX", tmp, tn);
tn = mktemp(tm);
} else
tn = NULL;
if (tn) {
STRING(ans)[0] = mkChar(tn);
free(tn);
} else
STRING(ans)[0] = mkChar("");
UNPROTECT(1);
return (ans);
}
SEXP do_unlink(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP ans;
char *tmp;
checkArity(op, args);
PROTECT(ans = allocVector(STRSXP, 1));
if (!isString(CAR(args)) || LENGTH(CAR(args)) != 1)
errorcall(call, "invalid file name argument\n");
tmp = CHAR(STRING(CAR(args))[0]);
/* try to unlink file */
if (!unlink(tmp))
STRING(ans)[0] = mkChar("0");
else
STRING(ans)[0] = mkChar("1");
UNPROTECT(1);
return (ans);
}
SEXP do_helpstart(SEXP call, SEXP op, SEXP args, SEXP env)
{
SEXP ans;
char *home, buf[MAX_PATH];
FILE *ff;
checkArity(op, args);
home = getenv("RHOME");
if (home == NULL)
error("RHOME not set\n");
sprintf(buf, "%s\\doc\\html\\index.html", home);
ff = fopen(buf, "r");
if (!ff) {
sprintf(buf, "%s\\doc\\html\\index.htm", home);
ff = fopen(buf, "r");
if (!ff) {
sprintf(buf, "%s\\doc\\html\\index.htm[l] not found\n", home);
error(buf);
}
}
fclose(ff);
ShellExecute(NULL, "open", buf, NULL, home, SW_SHOW);
PROTECT(ans = allocVector(STRSXP, 1));
STRING(ans)[0] = mkChar("");
UNPROTECT(1);
return (ans);
}
static int nhfiles = 0;
static char *hfiles[50];
SEXP do_helpitem(SEXP call, SEXP op, SEXP args, SEXP env)
{
/*
* type = 1: launch html file.
* 2: "topic", 2, Windows help file.
* 3: notify are finished with the help file.
*/
char *item, *hfile;
char *home, buf[MAX_PATH];
FILE *ff;
int type;
checkArity(op, args);
if (!isString(CAR(args)))
errorcall(call, "invalid topic argument\n");
item = CHAR(STRING(CAR(args))[0]);
type = asInteger(CADR(args));
if (type == 1) {
ff = fopen(item, "r");
if (!ff) {
sprintf(buf, "%s not found\n", item);
error(buf);
}
fclose(ff);
home = getenv("RHOME");
if (home == NULL)
error("RHOME not set\n");
ShellExecute(NULL, "open", item, NULL, home, SW_SHOW);
} else if (type == 2) {
if (!isString(CADDR(args)))
errorcall(call, "invalid hlpfile argument\n");
hfile = CHAR(STRING(CADDR(args))[0]);
if (!WinHelp((HWND) 0, hfile, HELP_KEY, (DWORD) item))
warning("WinHelp call failed\n");
else {
if (nhfiles >= 50)
error("too many .hlp files opened\n");
hfiles[nhfiles] = malloc(strlen(hfile) * sizeof(char));
strcpy(hfiles[nhfiles++], hfile);
}
} else if (type == 3) {
if (!isString(CADDR(args)))
warningcall(call, "invalid hlpfile argument\n");
hfile = CHAR(STRING(CADDR(args))[0]);
if (!WinHelp((HWND) 0, hfile, HELP_QUIT, (DWORD) 0))
error("WinHelp call failed\n");
} else
warning("type not yet implemented\n");
return R_NilValue;
}
void closeAllHlpFiles()
{
int i;
for (i = nhfiles - 1; i >= 0; i--)
WinHelp((HWND) 0, hfiles[i], HELP_QUIT, (DWORD) 0);
}
SEXP do_flushconsole(SEXP call, SEXP op, SEXP args, SEXP env)
{
R_FlushConsole();
return R_NilValue;
}