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sandbox: Sort the help options

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At present options are presented in essentially random order. It is easier
to browse them if they are sorted into alphabetical order. Adjust the
help function to handle this.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-02-03 07:35:47 -07:00
parent 1d6a0c9503
commit 4209be3eae
1 changed files with 45 additions and 1 deletions
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46
arch/sandbox/cpu/start.c
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@ -9,13 +9,45 @@
#include <os.h>
#include <cli.h>
#include <malloc.h>
#include <sort.h>
#include <asm/getopt.h>
#include <asm/io.h>
#include <asm/sections.h>
#include <asm/state.h>
#include <linux/ctype.h>
DECLARE_GLOBAL_DATA_PTR;
/* Compare two options so that they can be sorted into alphabetical order */
static int h_compare_opt(const void *p1, const void *p2)
{
const struct sandbox_cmdline_option *opt1 = p1;
const struct sandbox_cmdline_option *opt2 = p2;
const char *str1, *str2;
char flag1[2], flag2[2];
opt1 = *(struct sandbox_cmdline_option **)p1;
opt2 = *(struct sandbox_cmdline_option **)p2;
flag1[1] = '\0';
flag2[1] = '\0';
*flag1 = opt1->flag_short < 0x100 ? opt1->flag_short : '\0';
*flag2 = opt2->flag_short < 0x100 ? opt2->flag_short : '\0';
str1 = *flag1 ? flag1 : opt1->flag;
str2 = *flag2 ? flag2 : opt2->flag;
/*
* Force lower-case flags to come before upper-case ones. We only
* support upper-case for short flags.
*/
if (isalpha(*str1) && isalpha(*str2) &&
tolower(*str1) == tolower(*str2))
return isupper(*str1) - isupper(*str2);
return strcasecmp(str1, str2);
}
int sandbox_early_getopt_check(void)
{
struct sandbox_state *state = state_get_current();
@ -23,6 +55,8 @@ int sandbox_early_getopt_check(void)
size_t num_options = __u_boot_sandbox_option_count();
size_t i;
int max_arg_len, max_noarg_len;
struct sandbox_cmdline_option **sorted_opt;
int size;
/* parse_err will be a string of the faulting option */
if (!state->parse_err)
@ -45,8 +79,18 @@ int sandbox_early_getopt_check(void)
max_arg_len = max((int)strlen(sb_opt[i]->flag), max_arg_len);
max_noarg_len = max_arg_len + 7;
/* Sort the options */
size = sizeof(*sorted_opt) * num_options;
sorted_opt = malloc(size);
if (!sorted_opt) {
printf("No memory to sort options\n");
os_exit(1);
}
memcpy(sorted_opt, sb_opt, size);
qsort(sorted_opt, num_options, sizeof(*sorted_opt), h_compare_opt);
for (i = 0; i < num_options; ++i) {
struct sandbox_cmdline_option *opt = sb_opt[i];
struct sandbox_cmdline_option *opt = sorted_opt[i];
/* first output the short flag if it has one */
if (opt->flag_short >= 0x100)