MoinMoin: attachment:DataLanguage.py of ProcessorMarket

   1 """
   2     MoinMoin - Processor for idl (www.rsinc.com) compatible languages
   3 
   4     INSTALL: create a user without a password e.g. idl_user
   5              set the rights of su only callable from users of the su group
   6 	     the httpd user account normally wwwrun must be in this group.
   7 
   8              config_dl_vartmp_dir must be writable for this user.
   9 
  10              Check the rights of this user to prevent corruption of your system.
  11 
  12 
  13     @copyright: 2004-04-10 by R.Bauer
  14                 code logic taken from latex.py (Won-kyu Park <wkpark@kldp.org>, Benny Siegert, R.Bauer)
  15 
  16     @license: GNU GPL, see COPYING for details.
  17 
  18 """
  19 
  20 Dependencies = []
  21 
  22 import sys, os, re, sha
  23 from MoinMoin.Page import Page
  24 from MoinMoin.action import AttachFile
  25 
  26 config_external_language='idl'
  27 config_external_dl = "/usr/local/bin/"+config_external_language
  28 config_external_convert = "/usr/bin/convert"
  29 
  30 config_umask = 022
  31 
  32 config_dl_cache_dir = "./data"
  33 config_dl_cache_url = "./data"
  34 config_dl_header = ""
  35 config_dl_vartmp_dir = "./data/tmp"
  36 config_dl_image_type = 'jpg'
  37 # normally I prefer png, but at the moment my standalone wiki server has
  38 # some problems to show them perfect.
  39 
  40 config_dl_user ="idl_user"
  41 
  42 def process(request, formatter, lines):
  43     if not config_dl_cache_dir:
  44     	return
  45     if lines[0].strip() == "#!DataLanguage":
  46         del lines[0]
  47 
  48     texstr = '\n'.join(lines).strip()
  49 
  50     imgname = re.sub('\s+', ' ', texstr)
  51     imgname = sha.new(imgname).hexdigest()
  52 
  53     attdir = config_dl_cache_dir + "/"+config_external_language+"/attachments"
  54     atturl = config_dl_cache_url + "/"+config_external_language+"/attachments"
  55     outpath = "%s/%s.%s" % (attdir, imgname,config_dl_image_type)
  56     outurl = "%s/%s.%s" % (atturl, imgname,config_dl_image_type)
  57     if not os.path.isdir(attdir):
  58         os.makedirs(attdir, 0775)
  59 
  60     pagename=formatter.page.page_name
  61 
  62     url=AttachFile.getAttachUrl(pagename,imgname+'.'+config_dl_image_type,request)
  63     attach_dir=AttachFile.getAttachDir(pagename,create=1)
  64 
  65 
  66 
  67     if not os.path.isfile(attach_dir+'/'+imgname+'.'+config_dl_image_type):
  68      if not os.path.exists(outpath):
  69         vartmp = config_dl_vartmp_dir
  70 
  71         data = open("%s/%s.pro" % (vartmp, imgname), "w")
  72         data.write("%s\n set_plot,'ps'\n device,file='%s'\n%s\n  device,/close\n  exit" %(
  73           config_dl_header, imgname+'.ps',texstr))
  74         data.close()
  75 
  76 
  77 
  78         cmd = "cd %(vartmp)s;%(dl)s %(options)s %(pro)s ;exit >/dev/null" % {
  79            "dl": config_external_dl,
  80            "vartmp": vartmp,
  81            "options": '<',
  82            "pro": imgname+'.pro'
  83         }
  84         #request.write(cmd)
  85         data = open("%s/%s.sh" % (vartmp, imgname), "w")
  86         data.write(cmd)
  87         data.close()
  88 
  89 	cmd = "su %(dl_user)s %(vartmp)s/%(imgname)s" % {
  90 	   "dl_user": config_dl_user,
  91 	   "vartmp":vartmp,
  92 	   "imgname":imgname+".sh"
  93 	}
  94         #request.write(cmd)
  95 
  96 	os.umask(config_umask)
  97         os.system(cmd)
  98 
  99         os.system("%(convert)s -rotate 90 -crop 0x0 -density 72x72 %(vartmp)s/%(imgname)s.ps %(outpath)s" % {
 100             "convert": config_external_convert,
 101             "vartmp": vartmp,
 102             "outpath": attach_dir+'/'+imgname+'.'+config_dl_image_type,
 103             "imgname": imgname,
 104         })
 105 
 106         os.system("rm -f %(vartmp)s/%(imgname)s.*" % {
 107             "vartmp": vartmp,
 108             "imgname": imgname,
 109         })
 110 
 111     request.write(formatter.image(src="%s" % url, alt=texstr, align='absmiddle'))