[help-gengetopt] config parser patch for more graceful parsing

[Papp Gyozo (VBuster)]

Hi,

some time ago I'd sent this patch but somehow it was silently forgotten without 
any notice. As the comment states this patch allows more freedom in the config 
file syntax; values will be read to the end of line or the comment sign (#).

This way one neither has to enclose nor escape string like these:

name = James Mc'Gregor
key  = MC JMS

I hope this patch could be in the next package.

--- gengetopt-2.18.orig/src/skels/c_source.h_skel       Fri Jul 14 20:07:31 2006
+++ gengetopt-2.18/src/skels/c_source.h_skel    Tue Nov 21 19:36:40 2006
@@ -653,8 +653,11 @@
             }
         }
       else
-        { /* read up the remaining part up to a delimiter */
-          next_token = strcspn (farg, " \t\r\n#\'\"");
+        { /* read up the remaining part up to end of line or comment sign */
+          char *ch = (str_index + (next_token = strcspn (farg, "\r\n#")));
+          /* remove trailing whitespaces */
+          for ( --ch; (*ch >= '\t' && *ch <= '\r') || *ch == ' '; --ch )
+            --next_token;
           str_index += next_token;
         }

The stop condition is a clumsy replacement of isspace() due to ASCII character 
table:

0x09: '\t' (horizontal tab)
0x0a: '\n' (newline)
0x0b: '\v' (vertical tab) 0x0b, 
0x0c: '\f' (formfeed), 
0x0d: '\r' (carriage return) 




--
Papp, Gyozo
Virusbuster Kft