install

#! /usr/bin/env python2

# This script installs the files for Indexmeister and Imbrowse.in 
# locations for a 'typical' (i.e. GNU Debian based) Linux setup.  You might
# need to adjust it slightly for your system
#

import sys, os, subprocess, shutil, os.path, string, platform, stat

def p_wrap(pstring):
    ''' Prints a string with word-wrap to terminal column size '''

    try:
        a = term_cols
    except:
        try:
            with os.popen("echo $COLUMNS") as b: 
                term_cols = int(b.read())
        except: 
            term_cols = 40      # there aren`t that many 40-col CRTs around 
                                # these days but terminals on mobile devices
                                # can be pretty narrow, so this seems like a 
                                # reasonable default 

    while len(pstring) > term_cols:
        print (pstring[:pstring[:term_cols].rfind(" ")])
        pstring = pstring[len(pstring[:pstring[:term_cols].rfind(" ")]):]

    print pstring


def make_executable(path):
    ''' This is from StackOverflow user Jonathon Reinhart ''' 

    mode = os.stat(path).st_mode
    mode |= (mode & 0o444) >> 2    # copy R bits to X
    os.chmod(path, mode)


p_wrap ("Installing the Indexmeister suite.")
p_wrap ("NOTE: If this script fails check to make sure you are Root.")


#Try to figure out what kind of system this is

termux = False
if "termux" in sys.prefix:
    p_wrap ("I think this is an Android/Termux system. " +
                "People who run console apps on a mobile OS " +
                "are awesome." )
    termux = True

elif "win32" in sys.platform:
    p_wrap ("This seems to be a Windows system.  I'll try to " + 
                "install anyway, but it probably won't work. " +
                "Consider upgrading to a modern, POSIX complient OS.")

elif "linux" in sys.platform:
    p_wrap ("This seems to be a Linux system " + "(" + string.join(platform.linux_distribution())  
            + ").  Penguin Power!")
    linux = True

else:
    p_wrap ("'" + sys.platform +"' system detected. This install script " + 
                "hasn't really been tested on your system, but let's go " +
                "ahead and try anyway.")

# Now see if the dependencies are present

p_wrap ("Checking for some required dependencies.")

abort_flag = False

try:
    import curses

except:
    p_wrap ("WARNING: The Python 'curses' library doesn't seem to be installed.  You " +
           "won't be able to run imbrowse until you install it. The other programs " +
           "should still work.")
           
'''  #Shouldn't need grep anymore
if subprocess.call("grep hoser < /dev/null", shell=True) != 1:
    p_wrap ("WARNING: grep doesn't seem to be installed on this system.  You " +
           "won't be able to run imbrowse until you install it. The other programs " +
           "should still work.")
    if termux:  p_wrap ('On termux the command "pkg install grep" should do the trick.') 
'''

#aspell / hunspell

print "Checking for aspell and/or hunspell..."
if subprocess.call("aspell list < /dev/null", 
        shell=True) != 0 and subprocess.call(
        "hunspell -l < /dev/null", shell=True) != 0:
        
    p_wrap ("I can't find aspell nor hunspell on your machine. " +
            "unfortunately, indexmeister needs at least one of these to run.")

    if termux: p_wrap ('On termux the command "pkg install hunspell" should do the trick.')
            
    abort_flag = True
    

#detex / pandoc
print "Checking for pandoc and/or detex..."
if subprocess.call("pandoc < /dev/null", 
        shell=True) != 0 and subprocess.call("detex < /dev/null",
        shell=True) != 0:

    p_wrap ("I can't find pandoc nor detex on your machine. " +
            "unfortunately, indexmeister needs at least one of these to run. " + 
            "Detex is included with texlive and many other LaTex distributions. " + 
            "Pandoc (prefered) is available as a package on most Linux distributions.")

    if termux:
        p_wrap ('On termux the easiest way to get detex is usually to install the texlive' +
                ' package: "pkg install texlive*"') 
            
    abort_flag = True
        
          
if abort_flag:
    p_wrap ("Installation aborted because some required dependencies are not present.")
    quit()

# OK, now on to the actual installation

# Try to find the important directories

tree = [t for t in os.walk(sys.prefix)]

manpath = ""
#this works on most debian derivatives and some others
with os.popen("manpath") as b: 
    manpath = b.read().strip()
    manpaths = manpath.split(os.path.pathsep)
    for m in manpaths:
        if os.path.exists(m+"/man1"):
            manpath = m
        
#but if there's no 'manpath' just  guess
if manpath == "":
    manpath = sys.prefix + "/share/man/"


if termux:
    execpath = sys.prefix + '/bin/'
else:
    if os.path.exists("/usr/local/bin/"):
        execpath = "/usr/local/bin/"
    elif os.path.exists("/usr/bin"):
        execpath = "/usr/bin/"
    else:
        execpath = sys.prefix + '/bin/'
    

#copy the files over

p_wrap("Attempting to copy executable scripts to " + execpath)

try:
    shutil.copy("./imbrowse", execpath+"imbrowse")
    make_executable(execpath+"imbrowse")
    shutil.copy("./indexmeister", execpath+"indexmeister")
    make_executable(execpath+"indexmeister")
    shutil.copy("./imhier", execpath+"imhier")
    make_executable(execpath+"imhier")

    p_wrap("Success!") 
except:
    p_wrap ("It lookes like something went wrong.  You will probably need" +
            " to install the scripts by hand.")


p_wrap("Attempting to copy man pages to " + manpath + "man1/")

try:
    shutil.copy("./indexmeister.1.gz", manpath+ "/man1/")
    shutil.copy("./imbrowse.1.gz", manpath+ "/man1/")

    p_wrap("Success!") 

except:
    p_wrap ("It lookes like something went wrong.  You will probably need" +
            " to install the man pages by hand.")