From: Christian Heller <c.heller@plomlompom.de>
Date: Sat, 25 Jan 2014 21:18:38 +0000 (+0100)
Subject: Made sure client is not confused by newlines at the end of config files.
X-Git-Tag: tce~859
X-Git-Url: https://plomlompom.com/repos/%7B%7Bdb.prefix%7D%7D/%7B%7B%20web_path%20%7D%7D/decks/%7Broute%7D?a=commitdiff_plain;h=37fb9ef76174a83e27dd27a3250f4be5542e7452;p=plomrogue

Made sure client is not confused by newlines at the end of config files.
---

diff --git a/src/client/command_db.c b/src/client/command_db.c
index a74a93b..27a3b6d 100644
--- a/src/client/command_db.c
+++ b/src/client/command_db.c
@@ -60,7 +60,6 @@ extern void init_command_db()
     uint32_t lines;
     uint32_t linemax = textfile_sizes(file, &lines);
     char line[linemax + 1];
-    world.commandDB.cmds = try_malloc(lines * sizeof(struct Command), f_name);
     uint8_t i = 0;
     char * delim = " ";
     while (try_fgets(line, linemax + 1, file, f_name))
@@ -69,20 +68,28 @@ extern void init_command_db()
         {
             break;
         }
-        copy_tokenized_string(line, &world.commandDB.cmds[i].dsc_short, delim);
-        copy_tokenized_string(NULL, &world.commandDB.cmds[i].server_msg, delim);
-        if (!strcmp("0", world.commandDB.cmds[i].server_msg))
-        {                                             /*.server_msg==0 detects*/
-            free(world.commandDB.cmds[i].server_msg); /* non-server commands  */
-            world.commandDB.cmds[i].server_msg = NULL;/* in try_key() /       */
-        }                                             /* try_server_command().*/
+        struct Command cmd;
+        copy_tokenized_string(line, &cmd.dsc_short, delim);
+        copy_tokenized_string(NULL, &cmd.server_msg, delim);
+        if (!strcmp("0", cmd.server_msg))
+        {                          /* A .server_msg == NULL helps control.c's */
+            free(cmd.server_msg);  /* try_key() and try_server_command() to   */
+            cmd.server_msg = NULL; /* differentiate server commands from      */
+        }                          /* non-server commands.                    */
         char * arg_string = strtok(NULL, delim);
-        world.commandDB.cmds[i].arg = arg_string[0];
-        copy_tokenized_string(NULL, &world.commandDB.cmds[i].dsc_long, "\n");
+        cmd.arg = arg_string[0];
+        copy_tokenized_string(NULL, &cmd.dsc_long, "\n");
+        uint32_t old_size = i * sizeof(struct Command);
+        uint32_t new_size = old_size + sizeof(struct Command);
+        struct Command * new_cmds = try_malloc(new_size, f_name);
+        memcpy(new_cmds, world.commandDB.cmds, old_size);
+        new_cmds[i] = cmd;
+        free(world.commandDB.cmds);
+        world.commandDB.cmds = new_cmds;
         i++;
     }
     try_fclose(file, f_name);
-    world.commandDB.n = lines;
+    world.commandDB.n = i;
     set_cleanup_flag(CLEANUP_COMMANDS);
 }
 
diff --git a/src/client/windows.c b/src/client/windows.c
index e5c691d..2fd5131 100644
--- a/src/client/windows.c
+++ b/src/client/windows.c
@@ -625,7 +625,7 @@ extern uint8_t read_winconf_from_file(char * line, uint32_t linemax,
 {
     char * f_name = "read_winconf_from_file()";
     int test = try_fgetc(file, f_name);
-    if (EOF == test)
+    if (EOF == test || '\n' == test)
     {
         return 0;
     }
diff --git a/src/client/windows.h b/src/client/windows.h
index 59cf64d..97da5f1 100644
--- a/src/client/windows.h
+++ b/src/client/windows.h
@@ -73,6 +73,10 @@ extern struct Win * get_win_by_id(char id);
 /* Read/write individual Win (identified by "c") and world.winDB.order /
  * world.winDB.active from/to "file". Follow writing with "delim" delimiter.
  * Use "line" and "linemax" as expected by try_fgets().
+ *
+ * Note that read_winconf_from_file() returns 1 on success and 0 if it detects
+ * having found the end of the valid interface configuration file by either
+ * hitting a EOF or a newline (so empty newlines at the end of the file are ok).
  */
 extern uint8_t read_winconf_from_file(char * line, uint32_t linemax,
                                       FILE * file);