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author | Wolfgang Denk <wd@denx.de> | 2013-03-24 03:50:30 +0400 |
---|---|---|
committer | Tom Rini <trini@ti.com> | 2013-05-02 00:24:00 +0400 |
commit | d87244d5af58cbc2d9cc3f5314648deb7810f10a (patch) | |
tree | 661c93ff4d5fd1ea8fc093527117bb354d28fa74 /common/cmd_nvedit.c | |
parent | 5a31ea04c9ee5544fbb70ad7597ea4b294840eab (diff) | |
download | u-boot-d87244d5af58cbc2d9cc3f5314648deb7810f10a.tar.xz |
"env grep" - add options to grep in name, value, or both.
Add options to "env grep" command:
-n : search only the envrironment variable names
-v : search only their values
-b : search both names and values (= default)
An option "--" will stop parsing options, so to print variables that
contain the striing "- " please use:
env grep -- "- "
Or to print all environment varioables which have a '-' in their name,
use:
env grep -n -- -
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'common/cmd_nvedit.c')
-rw-r--r-- | common/cmd_nvedit.c | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index a4b71f8088..9158b96224 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -165,13 +165,39 @@ static int do_env_grep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { char *res = NULL; - int len; + int len, grep_flags; if (argc < 2) return CMD_RET_USAGE; + grep_flags = H_MATCH_BOTH; + + while (argc > 1 && **(argv + 1) == '-') { + char *arg = *++argv; + + --argc; + while (*++arg) { + switch (*arg) { + case 'n': /* grep for name */ + grep_flags = H_MATCH_KEY; + break; + case 'v': /* grep for value */ + grep_flags = H_MATCH_DATA; + break; + case 'b': /* grep for both */ + grep_flags = H_MATCH_BOTH; + break; + case '-': + goto DONE; + default: + return CMD_RET_USAGE; + } + } + } + +DONE: len = hexport_r(&env_htab, '\n', - flag | H_MATCH_BOTH | H_MATCH_SUBSTR, + flag | grep_flags | H_MATCH_SUBSTR, &res, 0, argc, argv); if (len > 0) { @@ -1127,7 +1153,7 @@ static char env_help_text[] = "env flags - print variables that have non-default flags\n" #endif #if defined(CONFIG_CMD_GREPENV) - "env grep string [...] - search environment\n" + "env grep [-n | -v | -b] string [...] - search environment\n" #endif #if defined(CONFIG_CMD_IMPORTENV) "env import [-d] [-t | -b | -c] addr [size] - import environment\n" @@ -1174,8 +1200,10 @@ U_BOOT_CMD_COMPLETE( U_BOOT_CMD_COMPLETE( grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, "search environment variables", - "string ...\n" - " - list environment name=value pairs matching 'string'", + "[-n | -v | -b] string ...\n" + " - list environment name=value pairs matching 'string'\n" + " \"-n\": search variable names; \"-v\": search values;\n" + " \"-b\": search both names and values (default)", var_complete ); #endif |