New file: Script to convert an exported gimp-path to a simple SVG-File.

2000-10-03  Simon Budig  <simon@gimp.org>

        * tools/gimppath2svg.py: New file: Script to convert an exported
	  gimp-path to a simple SVG-File.

ChangeLog

@@ -1,3 +1,8 @@
+2000-10-03  Simon Budig  <simon@gimp.org>
+
+	* tools/gimppath2svg.py: New file: Script to convert an exported
+	  gimp-path to a simple SVG-File.
+
 2000-10-03  Michael Natterer  <mitch@gimp.org>
 
 	* plug-ins/common/align_layers.c: Fixed cut'n'paste bug #26203.

tools/gimppath2svg.py

@@ -0,0 +1,119 @@
+#!/usr/bin/env python
+
+import sys,re
+
+"""
+gimppath2svg.py -- Converts Gimp-Paths to a SVG-File.
+Copyright (C) 2000  Simon Budig <simon@gimp.org>
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+Usage: gimppath2svg.py [infile [outfile]]
+"""
+
+
+svgtemplate = """<?xml version="1.0" standalone="yes"?>
+<svg width="%d" height="%d">
+<g>
+<path id="%s" transform="translate (%d,%d)"
+      style="stroke:#000000; stroke-width:1; fill:none"
+      d="%s"/>
+</g>
+</svg>
+"""
+
+emptysvgtemplate = """<?xml version="1.0" standalone="yes"?>
+<svg width="1" height="1">
+</svg>
+"""
+
+
+class Path:
+   def __init__(self):
+      self.name = ""
+      self.svgpath = ""
+      self.gimppoints = [[]]
+      self.bounds = None
+   
+   def readgimpfile (self, filedesc):
+      text = filedesc.readlines()
+      for line in text:
+	 namematch = re.match ("Name: (.*)$", line)
+	 if namematch:
+	    path.name = namematch.group(1)
+	 pointmatch = re.match ("TYPE: (\d) X: (\d+) Y: (\d+)", line)
+	 if pointmatch:
+	    if pointmatch.group (1) == "3":
+	       path.gimppoints.append ([])
+	    (x, y) = map (int, pointmatch.groups()[1:])
+	    path.gimppoints[-1].append (map (int, pointmatch.groups()))
+	    if self.bounds:
+	       if self.bounds[0] > x: self.bounds[0] = x
+	       if self.bounds[1] > y: self.bounds[1] = y
+	       if self.bounds[2] < x: self.bounds[2] = x
+	       if self.bounds[3] < y: self.bounds[3] = y
+	    else:
+	       self.bounds = [x,y,x,y]
+   
+   def makesvg (self):
+      for path in self.gimppoints:
+         if path:
+	    start = path[0]
+	    svg = "M %d %d " % tuple (start[1:])
+	    path = path[1:]
+	    while path:
+	       curve = path [0:3]
+	       path = path[3:]
+	       if len (curve) == 2:
+		  svg = svg + "C %d %d %d %d %d %d z " % tuple (
+			   tuple (curve [0][1:]) + 
+			   tuple (curve [1][1:]) + 
+			   tuple (start [1:]))
+	       if len (curve) == 3:
+		  svg = svg + "C %d %d %d %d %d %d " % tuple (
+			   tuple (curve [0][1:]) + 
+			   tuple (curve [1][1:]) + 
+			   tuple (curve [2][1:]))
+	    self.svgpath = self.svgpath + svg
+
+   def writesvgfile (self, outfile):
+      if self.svgpath:
+	 svg = svgtemplate % (self.bounds[2]-self.bounds[0],
+			      self.bounds[3]-self.bounds[1],
+			      self.name,
+			      -self.bounds[0], -self.bounds[1],
+			      self.svgpath)
+      else:
+         svg = emptysvgtemplate
+      outfile.write (svg)
+
+
+if len (sys.argv) > 1:
+   infile = open (sys.argv[1])
+else:
+   infile = sys.stdin
+
+if len (sys.argv) > 2:
+   outfile = open (sys.argv[2], "w")
+else:
+   outfile = sys.stdout
+
+
+path = Path()
+path.readgimpfile (infile)
+path.makesvg()
+path.writesvgfile (outfile)
+