add hg and python

sys/lib/python/plat-irix6/torgb.py

@@ -0,0 +1,99 @@
+# Convert "arbitrary" image files to rgb files (SGI's image format).
+# Input may be compressed.
+# The uncompressed file type may be PBM, PGM, PPM, GIF, TIFF, or Sun raster.
+# An exception is raised if the file is not of a recognized type.
+# Returned filename is either the input filename or a temporary filename;
+# in the latter case the caller must ensure that it is removed.
+# Other temporary files used are removed by the function.
+
+import os
+import tempfile
+import pipes
+import imghdr
+
+table = {}
+
+t = pipes.Template()
+t.append('fromppm $IN $OUT', 'ff')
+table['ppm'] = t
+
+t = pipes.Template()
+t.append('(PATH=$PATH:/ufs/guido/bin/sgi; exec pnmtoppm)', '--')
+t.append('fromppm $IN $OUT', 'ff')
+table['pnm'] = t
+table['pgm'] = t
+table['pbm'] = t
+
+t = pipes.Template()
+t.append('fromgif $IN $OUT', 'ff')
+table['gif'] = t
+
+t = pipes.Template()
+t.append('tifftopnm', '--')
+t.append('(PATH=$PATH:/ufs/guido/bin/sgi; exec pnmtoppm)', '--')
+t.append('fromppm $IN $OUT', 'ff')
+table['tiff'] = t
+
+t = pipes.Template()
+t.append('rasttopnm', '--')
+t.append('(PATH=$PATH:/ufs/guido/bin/sgi; exec pnmtoppm)', '--')
+t.append('fromppm $IN $OUT', 'ff')
+table['rast'] = t
+
+t = pipes.Template()
+t.append('djpeg', '--')
+t.append('(PATH=$PATH:/ufs/guido/bin/sgi; exec pnmtoppm)', '--')
+t.append('fromppm $IN $OUT', 'ff')
+table['jpeg'] = t
+
+uncompress = pipes.Template()
+uncompress.append('uncompress', '--')
+
+
+class error(Exception):
+    pass
+
+def torgb(filename):
+    temps = []
+    ret = None
+    try:
+        ret = _torgb(filename, temps)
+    finally:
+        for temp in temps[:]:
+            if temp != ret:
+                try:
+                    os.unlink(temp)
+                except os.error:
+                    pass
+                temps.remove(temp)
+    return ret
+
+def _torgb(filename, temps):
+    if filename[-2:] == '.Z':
+        (fd, fname) = tempfile.mkstemp()
+        os.close(fd)
+        temps.append(fname)
+        sts = uncompress.copy(filename, fname)
+        if sts:
+            raise error, filename + ': uncompress failed'
+    else:
+        fname = filename
+    try:
+        ftype = imghdr.what(fname)
+    except IOError, msg:
+        if type(msg) == type(()) and len(msg) == 2 and \
+                type(msg[0]) == type(0) and type(msg[1]) == type(''):
+            msg = msg[1]
+        if type(msg) is not type(''):
+            msg = repr(msg)
+        raise error, filename + ': ' + msg
+    if ftype == 'rgb':
+        return fname
+    if ftype is None or not table.has_key(ftype):
+        raise error, '%s: unsupported image file type %r' % (filename, ftype)
+    (fd, temp) = tempfile.mkstemp()
+    os.close(fd)
+    sts = table[ftype].copy(fname, temp)
+    if sts:
+        raise error, filename + ': conversion to rgb failed'
+    return temp