From 157e961c268e889e5a9b4934874442bc2eaeb800 Mon Sep 17 00:00:00 2001
From: Andy Wingo <wingo@pobox.com>
Date: Sat, 13 Apr 2002 17:11:42 +0000
Subject: [PATCH] quote spaces in tokens passed to gst_parse_launchv. this
 restores the old (shell-friendly) quoting behavior.

Original commit message from CVS:
quote spaces in tokens passed to gst_parse_launchv. this restores the old
(shell-friendly) quoting behavior.
---
 gst/gstparse.c    | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 gst/parse/parse.l |  4 +++-
 gst/parse/types.h |  2 ++
 3 files changed, 63 insertions(+), 5 deletions(-)

diff --git a/gst/gstparse.c b/gst/gstparse.c
index 9acb834..dc72ed7 100644
--- a/gst/gstparse.c
+++ b/gst/gstparse.c
@@ -235,6 +235,7 @@ make_connections (graph_t *g, GError **error)
     
     a = c->src_pads;
     b = c->sink_pads;
+//    g_print ("a: %p, b: %p\n", a, b);
     if (a && b) {
       /* balanced multipad connection */
       while (a && b) {
@@ -266,11 +267,14 @@ make_connections (graph_t *g, GError **error)
       }
     } else if (a) {
       if ((pt1 = gst_element_get_pad_template (src, (gchar*)a->data))) {
+//        g_print ("have padtemplate %s, SOMETIMES=%s\n", pt1->name_template, pt1->presence == GST_PAD_SOMETIMES ? "TRUE" : "FALSE");
         if ((p1 = gst_element_get_pad (src, (gchar*)a->data)) || pt1->presence == GST_PAD_SOMETIMES) {
           if (!p1) {
             /* sigh, a hack until i fix the gstelement api... */
             if ((pt2 = gst_element_get_compatible_pad_template (sink, pt1))) {
+//              g_print ("have compatible pad template %s\n", pt2->name_template);
               if ((p2 = gst_element_get_pad (sink, pt2->name_template))) {
+//                g_print ("got the pad\n");
                 dc = g_new0 (dynamic_connection_t, 1);
                 dc->srcpadname = (gchar*)a->data;
                 dc->target = p2;
@@ -411,16 +415,66 @@ GstBin *
 gst_parse_launchv (const gchar **argv, GError **error)
 {
   GstBin *pipeline;
-  gchar *pipeline_description;
+  GString *str;
+  const gchar **argvp, *arg;
+  gchar *tmp;
 
-  /* i think this cast works out ok... */
-  pipeline_description = g_strjoinv (" ", (gchar**)argv);
+  /* let's give it a nice size. */
+  str = g_string_sized_new (1024);
+
+  argvp = argv;
+  while (*argvp) {
+    arg = *argvp;
+    tmp = _gst_parse_escape (arg);
+    g_string_append (str, tmp);
+    g_free (tmp);
+    g_string_append (str, " ");
+    argvp++;
+  }
   
-  pipeline = gst_parse_launch (pipeline_description, error);
+  pipeline = gst_parse_launch (str->str, error);
+
+  g_string_free (str, TRUE);
 
   return pipeline;
 }
 
+gchar *_gst_parse_escape (const gchar *str)
+{
+  GString *gstr = NULL;
+  
+  g_return_val_if_fail (str != NULL, NULL);
+  
+  gstr = g_string_sized_new (strlen (str));
+  
+  while (*str) {
+    if (*str == ' ')
+      g_string_append_c (gstr, '\\');
+    g_string_append_c (gstr, *str);
+    str++;
+  }
+  
+  return gstr->str;
+}
+
+void _gst_parse_unescape (gchar *str)
+{
+  gchar *walk;
+  
+  g_return_if_fail (str != NULL);
+  
+  walk = str;
+  
+  while (*walk) {
+    if (*walk == '\\')
+      walk++;
+    *str = *walk;
+    str++;
+    walk++;
+  }
+  *str = '\0';
+}
+
 /**
  * gst_parse_launch:
  * @pipeline_description: the command line describing the pipeline
diff --git a/gst/parse/parse.l b/gst/parse/parse.l
index 2467558..50733d4 100644
--- a/gst/parse/parse.l
+++ b/gst/parse/parse.l
@@ -25,7 +25,8 @@ _identifier [[:alpha:]][[:alnum:]\-_%]*
 _lconnection ({_identifier}\.)?{_identifier}!
 _rconnection !({_identifier}\.)?{_identifier}
 _bconnection ({_identifier}\.)?{_identifier}!({_identifier}\.)?{_identifier}
-_string ([^[:space:]\"]|"\\\"")+|("\""([^\"]|"\\\"")*"\"")
+_char ([^[:space:]])|("\\".)
+_string {_char}+|("\""([^\"]|"\\\"")*"\"")
 
 %x value
 %option noyywrap
@@ -65,6 +66,7 @@ _string ([^[:space:]\"]|"\\\"")+|("\""([^\"]|"\\\"")*"\"")
             yytext++;
             *(yytext + strlen (yytext) - 1) = '\0';
         }
+        _gst_parse_unescape (yytext);
         PRINT ("A string: \"%s\"\n", yytext);
         lvalp->v = g_new0 (GValue, 1);
         g_value_init (lvalp->v, G_TYPE_STRING);
diff --git a/gst/parse/types.h b/gst/parse/types.h
index fa1c405..149921f 100644
--- a/gst/parse/types.h
+++ b/gst/parse/types.h
@@ -41,3 +41,5 @@ struct _graph_t {
 
 graph_t * _gst_parse_launch (const gchar *str, GError **error);
 
+gchar *_gst_parse_escape (const gchar *str);
+void _gst_parse_unescape (gchar *str);
-- 
2.7.4