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/*
Quickplot - an interactive 2D plotter
Copyright (C) 1998-2011 Lance Arsenault
This file is part of Quickplot.
Quickplot 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 3 of the License,
or (at your option) any later version.
Quickplot 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 Quickplot. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "paths.h"
#include "quickplot.h"
#include "config.h"
#include "debug.h"
#include "list.h"
#include "channel.h"
#include "spew.h"
#include "channel_double.h"
#include "qp.h"
#ifdef DMALLOC
# include "dmalloc.h"
#endif
static int LaunchBrowser(const char * const url)
{
int i=0;
pid_t pid;
// now try the list of browsers
const char * const browsers[] =
{
"firefox",
"galeon",
"konqueror",
"mozilla",
"epiphany",
"opera",
"netscape",
"dillo",
"seamonkey",
/*
"amaya",
"browsex",
"light",
*/
NULL
};
/* Lynx is so cool I've got to try it */
//execlp("lynx", "lynx", url, NULL);
/* It worked. That was cool. */
pid = vfork();
if(pid < 0) //error
{
QP_WARN("vfork() failed");
return 1;
}
if(pid > 0) // parent
return 0;
// I'm the child.
// First see if the user has set a prefered browser in the BROWSER
// environment variable.
const char *browser = getenv("BROWSER");
if(browser)
execlp(browser, browser, url, NULL);
browser = getenv("QP_BROWSER");
if(browser)
execlp(browser, browser, url, NULL);
for(browser=browsers[i]; browser; browser=browsers[++i])
{
INFO("executing: %s %s\n", browser, url);
execlp(browser, browser, url, NULL);
}
QP_WARN("Failed to launch a browser");
exit(EXIT_FAILURE); // child exits
}
/* for finding the full path to
* help.txt about.txt about.html help.html index.html
* Returns an open fd or -1 on failure
* Returns fullpath from malloc() */
int qp_find_doc_file(const char *filename, char **fullpath_ret)
{
int i;
char *fullpath;
char *htmldir[4];
ASSERT(strlen(filename) > 5);
htmldir[0] = getenv("QUICKPLOT_HTMLDIR");
htmldir[1] = getenv("QUICKPLOT_DOCDIR");
htmldir[2] = HTMLDIR;
htmldir[3] = DOCDIR;
for(i=0;i<4;++i)
{
int fd;
if(!htmldir[i]) continue;
fullpath = qp_malloc(strlen(filename) + 2 + strlen(htmldir[i]));
sprintf(fullpath, "%s%c%s", htmldir[i], DIR_CHAR, filename);
fd = open(fullpath, O_RDONLY);
if(fd == -1)
{
QP_INFO("Can't open file \"%s\"\n", fullpath);
free(fullpath);
continue;
}
else
{
if(fullpath_ret)
*fullpath_ret = fullpath;
return fd;
}
}
if(fullpath_ret)
*fullpath_ret = NULL;
{
int is_txt;
is_txt = strcmp(".txt", &filename[strlen(filename)-4])?0:1;
QP_WARN("Can't open Quickplot documentation file \"%s\"\n"
"Try setting environment variable QUICKPLOT_%s to\n"
"the directory where this file was installed to.\n",
filename, is_txt?"DOCDIR":"HTMLDIR");
}
return -1; /* failed */
}
int qp_launch_browser(const char *fileName)
// Returns 0 on success
{
int ret = 1;
int fd;
char *fullpath = NULL;
ASSERT(fileName);
ASSERT(fileName[0]);
ASSERT(fileName[0] != DIR_CHAR);
fd = qp_find_doc_file(fileName, &fullpath);
if(fullpath)
{
close(fd);
ret = LaunchBrowser(fullpath);
free(fullpath);
}
return ret;
}
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