CVS: libraries/commandline help.c,1.1,1.2

Update of /cvsroot/mspgcc/libraries/commandline
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv3794/libraries/commandline

Modified Files:
	help.c 
Log Message:
enhance help function:
- short help: first line of help text
- "help command" -> print full help text, indented

Index: help.c
===================================================================
RCS file: /cvsroot/mspgcc/libraries/commandline/help.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -w -d -r1.1 -r1.2
--- help.c	22 Aug 2005 11:25:26 -0000	1.1
+++ help.c	4 Oct 2005 09:37:41 -0000	1.2
@@ -1,16 +1,46 @@
 #include <stdio.h>
+#include <string.h>
 
 #include "commandline.h"
 
 //the help commands expect that there is a global command table
 extern const COMMANDLINE_TABLE commandline_table[];
 
+// "help" -> write a list of commands, with the first line of the help text
+// "help cmd" -> print the commands entire help text
 int command_help(int argc, char *argv[]) {
     const COMMANDLINE_TABLE *table_entry = commandline_table;
-    puts("Commands:");
+    if (argc == 2) {
     while (table_entry->name) {
-        printf("%-10s %s\n", table_entry->name, table_entry->help);
+            if (strcmp(table_entry->name, argv[1]) == 0) {
+                printf("%s: ", argv[1]);
+                const char * help_text = table_entry->help;
+                while (*help_text) {
+                    putchar(*help_text);
+                    if (*help_text == '\n' && help_text[1] != '\0') {
+                        printf("    ");
+                    }
+                    help_text++;
+                }
+                putchar('\n');
+                return 0;
+            }
         table_entry++;
     }
+        printf("no such command: \"%s\"\n", argv[1]);
+        return 1;
+    } else {
+        puts("List of commands:");
+        while (table_entry->name) {
+            printf("%-12s", table_entry->name);
+            // show first line of help text
+            const char * help_text = table_entry->help;
+            while (*help_text && *help_text != '\n') {
+                putchar(*help_text++);
+            }
+            putchar('\n');
+            table_entry++;
+        }
+    }
     return 0;
 }



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