From 6d21f051228ce9aa492bb4f7a1957a9525208217 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 14 Jul 2014 10:51:59 +0200
Subject: [PATCH] command: return bool for success/failure

---
 src/command.c       | 18 +++++++++---------
 src/command.h       | 19 ++++++++++++++++---
 src/conf.c          |  8 ++++----
 src/main.c          |  4 +---
 src/screen_keydef.c |  4 ++--
 5 files changed, 32 insertions(+), 21 deletions(-)

diff --git a/src/command.c b/src/command.c
index 62d68a5..857bf48 100644
--- a/src/command.c
+++ b/src/command.c
@@ -453,7 +453,7 @@ get_keyboard_command(void)
 	return get_key_command(key);
 }
 
-int
+bool
 assign_keys(command_t command, int keys[MAX_COMMAND_KEYS])
 {
 	for (size_t i = 0; cmds[i].name; i++) {
@@ -462,19 +462,19 @@ assign_keys(command_t command, int keys[MAX_COMMAND_KEYS])
 #ifndef NCMPC_MINI
 			cmds[i].flags |= COMMAND_KEY_MODIFIED;
 #endif
-			return 0;
+			return true;
 		}
 	}
 
-	return -1;
+	return false;
 }
 
 #ifndef NCMPC_MINI
 
-int
+bool
 check_key_bindings(command_definition_t *cp, char *buf, size_t bufsize)
 {
-	int retval = 0;
+	bool success = true;
 
 	if (cp == NULL)
 		cp = cmds;
@@ -505,15 +505,15 @@ check_key_bindings(command_definition_t *cp, char *buf, size_t bufsize)
 				}
 				cp[i].flags |= COMMAND_KEY_CONFLICT;
 				set_key_flags(cp, cmd, COMMAND_KEY_CONFLICT);
-				retval = -1;
+				success = false;
 			}
 		}
 	}
 
-	return retval;
+	return success;
 }
 
-int
+bool
 write_key_bindings(FILE *f, int flags)
 {
 	if (flags & KEYDEF_WRITE_HEADER)
@@ -541,7 +541,7 @@ write_key_bindings(FILE *f, int flags)
 		}
 	}
 
-	return ferror(f);
+	return ferror(f) == 0;
 }
 
 #endif /* NCMPC_MINI */
diff --git a/src/command.h b/src/command.h
index 307bba1..e770a1d 100644
--- a/src/command.h
+++ b/src/command.h
@@ -140,8 +140,17 @@ void command_dump_keys(void);
 
 #ifndef NCMPC_MINI
 
-int check_key_bindings(command_definition_t *cmds, char *buf, size_t size);
-int write_key_bindings(FILE *f, int all);
+/**
+ * @return true on success, false on error
+ */
+bool
+check_key_bindings(command_definition_t *cmds, char *buf, size_t size);
+
+/**
+ * @return true on success, false on error
+ */
+bool
+write_key_bindings(FILE *f, int all);
 
 #endif
 
@@ -164,7 +173,11 @@ gcc_pure
 command_t
 get_key_command_from_name(const char *name);
 
-int assign_keys(command_t command, int keys[MAX_COMMAND_KEYS]);
+/**
+ * @return true on success, false on error
+ */
+bool
+assign_keys(command_t command, int keys[MAX_COMMAND_KEYS]);
 
 gcc_pure
 command_t get_keyboard_command(void);
diff --git a/src/conf.c b/src/conf.c
index 5d8ec5e..03ba80d 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -122,7 +122,7 @@ parse_key_value(char *str, char **end)
 	}
 }
 
-static int
+static bool
 parse_key_definition(char *str)
 {
 	/* get the command name */
@@ -139,7 +139,7 @@ parse_key_definition(char *str)
 		/* the hotkey configuration contains an unknown
 		   command */
 		print_error(_("Unknown command"), buf);
-		return -1;
+		return false;
 	}
 
 	/* skip whitespace */
@@ -152,7 +152,7 @@ parse_key_definition(char *str)
 	if (*buf == 0) {
 		/* the hotkey configuration line is incomplete */
 		print_error(_("Incomplete hotkey configuration"), str);
-		return -1;
+		return false;
 	}
 
 	/* parse key values */
@@ -170,7 +170,7 @@ parse_key_definition(char *str)
 	}
 
 	if (key < 0)
-		return -1;
+		return false;
 
 	return assign_keys(cmd, keys);
 }
diff --git a/src/main.c b/src/main.c
index 4c0f881..341fb17 100644
--- a/src/main.c
+++ b/src/main.c
@@ -483,10 +483,8 @@ timer_check_key_bindings(gcc_unused gpointer data)
 #ifdef ENABLE_KEYDEF_SCREEN
 	char comment[64];
 #endif
-	gboolean key_error;
 
-	key_error = check_key_bindings(NULL, buf, sizeof(buf));
-	if (!key_error) {
+	if (check_key_bindings(NULL, buf, sizeof(buf))) {
 		/* no error: disable this timer for the rest of this
 		   process */
 		check_key_bindings_source_id = 0;
diff --git a/src/screen_keydef.c b/src/screen_keydef.c
index dde5ce5..164cf65 100644
--- a/src/screen_keydef.c
+++ b/src/screen_keydef.c
@@ -162,9 +162,9 @@ save_keys(void)
 	}
 
 	if (write_key_bindings(f, KEYDEF_WRITE_HEADER))
-		screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
-	else
 		screen_status_printf(_("Wrote %s"), filename);
+	else
+		screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
 
 	g_free(filename);
 	return fclose(f);
-- 
2.30.2