Template filler

bin/fimplate

@@ -0,0 +1 @@
+../fimplate.py

chr2pix

@@ -2,6 +2,8 @@
 import sys
 import scipy.misc
 import numpy as n
+from argparse import ArgumentParser 
+
 
 def png2asc(inFile):
     im=scipy.misc.imread(inFile)
@@ -35,15 +37,15 @@ def asc2png(inFile,outFile):
   
     scipy.misc.imsave(outFile, im)
 
-if len(sys.argv)==1:
+
-    print("Arguments:")
+parser=ArgumentParser(description="Convert image to ascii, or ascii to image. If only input is defined, it is assumed as image (PNG).")
-    print("   [png image file] : prints ascii in stdout")
+parser.add_argument('input', action="store")
-    print("   [text file] [png image file] : convert characters to pixels in image")
+parser.add_argument('output', action="store", nargs='?')
-    sys.exit(0)
+opts=parser.parse_args()
-inFile = sys.argv[1]
+
-if inFile.lower().endswith('.png'):
+if opts.output==None:
-    png2asc(inFile)
+    png2asc(opts.input)
 else:
-    asc2png(inFile,sys.argv[2])
+    asc2png(opts.input,opts.output)
 
 

fimplate.py

@@ -0,0 +1,69 @@
+#!/usr/bin/python
+
+import sys
+import os
+import re
+from argparse import ArgumentParser 
+from argparse import RawTextHelpFormatter
+
+def setup_options():
+    parser=ArgumentParser(description="""Template Filler
+    
+=== Template example: ===
+  Hello [[name]]!
+
+
+== Value file/Value pair example: ==
+[[name]]=John 
+    """,formatter_class=RawTextHelpFormatter)
+    parser.add_argument("-f",action="store",dest="file",
+                      help="File name to read keys/values.")
+    parser.add_argument("-p",action="append",dest="values",default=[],
+                     help="key=value pairs. This option may be issued several times.")
+    parser.add_argument('template', action="store", nargs='?',
+                    help="Template file to be filled. If not defined, stdin used.")
+    options=parser.parse_args()
+    return options
+
+def parse_file(filename):
+    pairs=[]
+    with open(filename,"r") as reader:
+        for i,l in enumerate(reader):
+            l=l.rstrip("\n\r")
+            if len(l)==0:
+                continue
+            tokens = l.split('=', 1)
+            if len(tokens)!=2:
+                print("File %s:%i key=value pair '%s' does not parse"%(filename,i+1,l,))
+                sys.exit(1) 
+            pairs.append( (tokens[0], tokens[1].decode('string_escape')) )
+    return pairs
+
+def parse_arguments(args):
+    pairs=[]
+    for p in args:
+        tokens = p.split('=', 1)
+        if len(tokens)!=2:
+            print("Argument key=value pair '%s' does not parse"%(p,))
+            sys.exit(1) 
+        pairs.append( (tokens[0], tokens[1].decode('string_escape')) )
+    return pairs
+
+def main():
+    options=setup_options();
+    pairs=[]
+    if options.file!=None:
+        pairs.extend(parse_file(options.file))
+    pairs.extend(parse_arguments(options.values))
+    if options.template==None:
+        in_reader=sys.stdin
+    else:
+        in_reader=open(options.template,'rb')
+    for l in in_reader:
+        for p in pairs:
+            l=l.replace(p[0],p[1])
+        sys.stdout.write(l)
+        
+if __name__ == "__main__":
+    main()
+