Let's assume there are two options with names such that one is a substring of another. Previously, if we only specified the longer one as a debug option, the shorter one would be considered specified as well (because of strstr). This commit fixes it by checking that each option is surrounded by commas.
(a regexp would be nicer, but this is not a performance critical code) --- src/gallium/auxiliary/util/u_debug.c | 39 +++++++++++++++++++++++++++++++++- 1 files changed, 38 insertions(+), 1 deletions(-) diff --git a/src/gallium/auxiliary/util/u_debug.c b/src/gallium/auxiliary/util/u_debug.c index 59b7613..8cf7660 100644 --- a/src/gallium/auxiliary/util/u_debug.c +++ b/src/gallium/auxiliary/util/u_debug.c @@ -180,6 +180,43 @@ debug_get_num_option(const char *name, long dfault) return result; } +static boolean str_has_option(const char *str, const char *name) +{ + const char *substr; + + /* OPTION=all */ + if (!util_strcmp(str, "all")) { + return TRUE; + } + + /* OPTION=name */ + if (!util_strcmp(str, name)) { + return TRUE; + } + + substr = util_strstr(str, name); + + if (substr) { + unsigned name_len = strlen(name); + + /* OPTION=name,... */ + if (substr == str && substr[name_len] == ',') { + return TRUE; + } + + /* OPTION=...,name */ + if (substr+name_len == str+strlen(str) && substr[-1] == ',') { + return TRUE; + } + + /* OPTION=...,name,... */ + if (substr[-1] == ',' && substr[name_len] == ',') { + return TRUE; + } + } + + return FALSE; +} unsigned long debug_get_flags_option(const char *name, @@ -207,7 +244,7 @@ debug_get_flags_option(const char *name, else { result = 0; while( flags->name ) { - if (!util_strcmp(str, "all") || util_strstr(str, flags->name )) + if (str_has_option(str, flags->name)) result |= flags->value; ++flags; } -- 1.7.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev