compare two U-Boot Environment variables with itest.s, example:
=> print tmp ver tmp=U-Boot 2013.10-g75e ver=U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX => print check_ub_ver check_ub_ver=if itest.s ${tmp} == ${ver}; then echo equal; else echo diff ;fi => run check_ub_ver diff => setenv tmp U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX => print tmp ver tmp=U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX ver=U-Boot 2013.10-g75eb4bc (Jan 21 2014 - 10:35:39)MPC83XX => run check_ub_ver equal
Signed-off-by: Heiko Schocher hs@denx.de --- common/cmd_itest.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/common/cmd_itest.c b/common/cmd_itest.c index 29f8076..ae2527b 100644 --- a/common/cmd_itest.c +++ b/common/cmd_itest.c @@ -71,6 +71,19 @@ static char * evalstr(char *s) /* if the parameter starts with a * then assume a string pointer else its a literal */ if (s[0] == '*') { return (char *)simple_strtoul(&s[1], NULL, 16); + } else if (s[0] == '$') { + int i = 2; + + if (s[1] != '{') + return NULL; + + while (s[i] != '}') { + if (s[i] == 0) + return NULL; + i++; + } + s[i] = 0; + return getenv((const char *)&s[2]); } else { return s; }