support escape and quote of whitespace in filenames

quote automatically with " in readline completion


git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1737 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

urjtag/ChangeLog

@@ -1,3 +1,11 @@
+2010-01-26  Arnim Laeuger  <arniml>
+
+  * src/apps/jtag/jtag.c: quote whitespace in filenames with " in
+    readline completion
+
+  * src/global/parse.c: escape whitespace with '\' (Gaston Rodriguez)
+    quote whitespace with ' and "
+
 2010-01-26  Jie Zhang  <jie.zhang@analog.com>
             Mike Frysinger  <vapier@gentoo.org>
 

urjtag/src/apps/jtag/jtag.c

@@ -563,6 +563,9 @@ main (int argc, char *const argv[])
 
 #ifdef HAVE_LIBREADLINE
 #ifdef HAVE_READLINE_COMPLETION
+    rl_completer_quote_characters = "\"";
+    rl_filename_completion_desired = 1;
+    rl_filename_quote_characters = " ";
     rl_attempted_completion_function = urj_cmd_completion;
 #endif
 #endif

urjtag/src/global/parse.c

@@ -48,6 +48,7 @@ int
 urj_parse_line (urj_chain_t *chain, char *line)
 {
     int l, i, r, tcnt;
+    int escape = 0, quote_single = 0, quote_double = 0;
     char **a;
     char *c, *d;
     char *sline;
@@ -84,10 +85,32 @@ urj_parse_line (urj_chain_t *chain, char *line)
         if (*c == '\0' || *c == '#')
             break;
 
-        /* copy the meat (non-space, non-NUL) */
-        while (!isspace (*c) && *c != '\0')
+        /* copy the meat (non-space, non-NUL), consider escape and quotes */
+        while ((!isspace (*c)
+                || escape
+                || quote_single
+                || quote_double) && *c != '\0')
         {
-            *d++ = *c++;
+            if (*c == '\'' && !escape && !quote_double)
+            {
+                quote_single ^= 1;
+                c++;
+            }
+            else if (*c == '"' && !escape && !quote_single)
+            {
+                quote_double ^= 1;
+                c++;
+            }
+            else if (*c == '\\' && !escape)
+            {
+                escape = 1;
+                c++;
+            }
+            else
+            {
+                escape = 0;
+                *d++ = *c++;
+            }
         }
         /* mark the end to the destination string */
         *d++ = '\0';