Const-ify the world (or at least a good part of it)

This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes:

- CLI command handlers
- CLI command handler arguments
- AGI command handlers
- AGI command handler arguments
- Dialplan application handler arguments
- Speech engine API function arguments

In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing.

Review: https://reviewboard.asterisk.org/r/251/



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 8 insertions, 8 deletions

diff --git a/include/asterisk/agi.h b/include/asterisk/agi.h
index 9c7759576..9df9afe4d 100644
--- a/include/asterisk/agi.h
+++ b/include/asterisk/agi.h
@@ -39,22 +39,22 @@ typedef struct agi_state {
 } AGI;
 
 typedef struct agi_command {
-	char *cmda[AST_MAX_CMD_LEN];		/*!< Null terminated list of the words of the command */
+	const char * const cmda[AST_MAX_CMD_LEN];		/*!< Null terminated list of the words of the command */
 	/*! Handler for the command (channel, AGI state, # of arguments, argument list). 
 	    Returns RESULT_SHOWUSAGE for improper arguments */
-	int (*handler)(struct ast_channel *chan, AGI *agi, int argc, char *argv[]);
+	int (* const handler)(struct ast_channel *chan, AGI *agi, int argc, const char * const argv[]);
 	/*! Summary of the command (< 60 characters) */
-	char *summary;
+	const char * const summary;
 	/*! Detailed usage information */
-	char *usage;
+	const char * const usage;
 	/*! Does this application run dead */
-	int dead;
+	const int dead;
 	/*! AGI command syntax description */
-	char *syntax;
+	const char * const syntax;
 	/*! See also content */
-	char *seealso;
+	const char * const seealso;
 	/*! Where the documentation come from. */
-	enum ast_doc_src docsrc;
+	const enum ast_doc_src docsrc;
 	/*! Pointer to module that registered the agi command */
 	struct ast_module *mod;
 	/*! Linked list pointer */