More warning fixes

include/configuration.h

@@ -421,11 +421,11 @@ struct config_chain_t
 };
 
 #define config_ChainParse( a, b, c, d ) __config_ChainParse( VLC_OBJECT(a), b, c, d )
-VLC_EXPORT( void,   __config_ChainParse, ( vlc_object_t *, char *psz_prefix, const char **ppsz_options, config_chain_t * ) );
-VLC_EXPORT( char *, config_ChainCreate, ( char **, config_chain_t **, char * ) );
+VLC_EXPORT( void,   __config_ChainParse, ( vlc_object_t *, const char *psz_prefix, const char **ppsz_options, config_chain_t * ) );
+VLC_EXPORT( char *, config_ChainCreate, ( char **, config_chain_t **, const char * ) );
 VLC_EXPORT( void, config_ChainDestroy, ( config_chain_t * ) );
 
-static inline config_chain_t *config_chain_find( config_chain_t *p_cfg, char *psz_name )
+static inline config_chain_t *config_chain_find( config_chain_t *p_cfg, const char *psz_name )
 {
     while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
     {
@@ -435,7 +435,7 @@ static inline config_chain_t *config_chain_find( config_chain_t *p_cfg, char *ps
     return p_cfg;
 }
 
-static inline char *config_chain_find_value( config_chain_t *p_cfg, char *psz_name )
+static inline char *config_chain_find_value( config_chain_t *p_cfg, const char *psz_name )
 {
     while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
     {

include/vlc_symbols.h

@@ -550,9 +550,9 @@ struct module_symbols_t
     void *input_AskForArt_deprecated;
     int (*playlist_AskForArtEnqueue_inner) (playlist_t *, input_item_t *);
     uint32_t (*input_CurrentMetaFlags_inner) (vlc_meta_t *p_meta);
-    void (*__config_ChainParse_inner) (vlc_object_t *, char *psz_prefix, const char **ppsz_options, config_chain_t *);
+    void (*__config_ChainParse_inner) (vlc_object_t *, const char *psz_prefix, const char **ppsz_options, config_chain_t *);
     void (*config_ChainDestroy_inner) (config_chain_t *);
-    char * (*config_ChainCreate_inner) (char **, config_chain_t **, char *);
+    char * (*config_ChainCreate_inner) (char **, config_chain_t **, const char *);
     int (*utf8_open_inner) (const char *filename, int flags, mode_t mode);
     int (*net_ListenSingle_inner) (vlc_object_t *p_this, const char *psz_host, int i_port, int family, int socktype, int protocol);
     char * (*str_format_time_inner) (char *);

src/misc/configuration_chain.c

@@ -45,9 +45,10 @@
     { while( e > p && ( *(e-1) == ' ' || *(e-1) == '\t' ) ) e--; }
 
 /* go accross " " and { } */
-static char *_get_chain_end( char *str )
+static const char *_get_chain_end( const char *str )
 {
-    char c, *p = str;
+    char c;
+    const char *p = str;
 
     SKIPSPACE( p );
 
@@ -76,10 +77,10 @@ static char *_get_chain_end( char *str )
     }
 }
 
-char *config_ChainCreate( char **ppsz_name, config_chain_t **pp_cfg, char *psz_chain )
+char *config_ChainCreate( char **ppsz_name, config_chain_t **pp_cfg, const char *psz_chain )
 {
     config_chain_t *p_cfg = NULL;
-    char       *p = psz_chain;
+    const char *p = psz_chain;
 
     *ppsz_name = NULL;
     *pp_cfg    = NULL;
@@ -98,7 +99,7 @@ char *config_ChainCreate( char **ppsz_name, config_chain_t **pp_cfg, char *psz_c
 
     if( *p == '{' )
     {
-        char *psz_name;
+        const char *psz_name;
 
         p++;
 
@@ -126,7 +127,7 @@ char *config_ChainCreate( char **ppsz_name, config_chain_t **pp_cfg, char *psz_c
 
             if( *p == '=' || *p == '{' )
             {
-                char *end;
+                const char *end;
                 vlc_bool_t b_keep_brackets = (*p == '{');
 
                 if( *p == '=' ) p++;
@@ -224,7 +225,7 @@ void config_ChainDestroy( config_chain_t *p_cfg )
     }
 }
 
-void __config_ChainParse( vlc_object_t *p_this, char *psz_prefix,
+void __config_ChainParse( vlc_object_t *p_this, const char *psz_prefix,
                           const char **ppsz_options, config_chain_t *cfg )
 {
     char *psz_name;