config: better error reporting, make invalid option values non-fatal

Always print config file location and line number on config file parse
errors. Print an error message with fatal log level if parsing failed
completely.

Setting an option to an invalid value in config files made loading these
files fatal. There isn't really any need to make this a fatal error.
Change it so that these cases don't abort loading. This is also more
consistent with missing options. These weren't fatal either.

1 files changed, 15 insertions, 19 deletions

diff --git a/parser-cfg.c b/parser-cfg.c
index 5ad6b9698e..8ab403ba45 100644
--- a/parser-cfg.c
+++ b/parser-cfg.c
@@ -45,7 +45,7 @@ static int recursion_depth = 0;
  */
 int m_config_parse_config_file(m_config_t *config, const char *conffile)
 {
-#define PRINT_LINENUM   mp_msg(MSGT_CFGPARSER, MSGL_V, "%s(%d): ", conffile, line_num)
+#define PRINT_LINENUM   mp_msg(MSGT_CFGPARSER, MSGL_ERR, "%s:%d: ", conffile, line_num)
 #define MAX_LINE_LEN    10000
 #define MAX_OPT_LEN     1000
 #define MAX_PARAM_LEN   1500
@@ -116,8 +116,7 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
             opt[opt_pos++] = line[line_pos++];
             if (opt_pos >= MAX_OPT_LEN) {
                 PRINT_LINENUM;
-                mp_msg(MSGT_CFGPARSER, MSGL_ERR,
-                       "too long option at line %d\n", line_num);
+                mp_msg(MSGT_CFGPARSER, MSGL_ERR, "too long option\n");
                 errors++;
                 ret = -1;
                 goto nextline;
@@ -125,8 +124,7 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
         }
         if (opt_pos == 0) {
             PRINT_LINENUM;
-            mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parse error at line %d\n",
-                   line_num);
+            mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parse error\n");
             ret = -1;
             errors++;
             continue;
@@ -151,7 +149,7 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
         if (line[line_pos++] != '=') {
             PRINT_LINENUM;
             mp_msg(MSGT_CFGPARSER, MSGL_ERR,
-                   "Option %s needs a parameter at line %d\n", opt, line_num);
+                   "option %s needs a parameter\n", opt);
             ret = -1;
             errors++;
             continue;
@@ -170,8 +168,7 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
                 if (param_pos >= MAX_PARAM_LEN) {
                     PRINT_LINENUM;
                     mp_msg(MSGT_CFGPARSER, MSGL_ERR,
-                           "Option %s has a too long parameter at line %d\n",
-                           opt, line_num);
+                           "option %s has a too long parameter\n", opt);
                     ret = -1;
                     errors++;
                     goto nextline;
@@ -198,7 +195,7 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
         if (param_pos == 0) {
             PRINT_LINENUM;
             mp_msg(MSGT_CFGPARSER, MSGL_ERR,
-                   "Option %s needs a parameter at line %d\n", opt, line_num);
+                   "option %s needs a parameter\n", opt);
             ret = -1;
             errors++;
             continue;
@@ -212,9 +209,8 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
         /* EOL / comment */
         if (line[line_pos] != '\0' && line[line_pos] != '#') {
             PRINT_LINENUM;
-            mp_msg(MSGT_CFGPARSER, MSGL_WARN,
-                   "extra characters on line %d: %s\n",
-                   line_num, line + line_pos);
+            mp_msg(MSGT_CFGPARSER, MSGL_ERR,
+                   "extra characters: %s\n", line + line_pos);
             ret = -1;
         }
 
@@ -229,16 +225,12 @@ int m_config_parse_config_file(m_config_t *config, const char *conffile)
         if (tmp < 0) {
             PRINT_LINENUM;
             if (tmp == M_OPT_UNKNOWN) {
-                mp_msg(MSGT_CFGPARSER, MSGL_WARN,
-                       "Warning: unknown option '%s' at line %d in file '%s'.\n",
-                       opt, line_num, conffile);
+                mp_msg(MSGT_CFGPARSER, MSGL_ERR,
+                       "unknown option '%s'\n", opt);
                 continue;
             }
             mp_msg(MSGT_CFGPARSER, MSGL_ERR,
-                   "Error parsing option %s=%s at line %d\n",
-                   opt, param, line_num);
-            ret = -1;
-            errors++;
+                   "setting option %s='%s' failed\n", opt, param);
             continue;
             /* break */
         }
@@ -251,5 +243,9 @@ nextline:
 out:
     config->mode = prev_mode;
     --recursion_depth;
+    if (ret < 0) {
+        mp_msg(MSGT_CFGPARSER, MSGL_FATAL, "Error loading config file %s.\n",
+               conffile);
+    }
     return ret;
 }