mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 09:42:17 +07:00
5feaac248a
help_unknown_cmd() is quite perf-specific because it relies on some perf_config*() functions. Move it and its supporting functions out into a separate file so that help.c can be moved to a library. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/562d918bcaaf340c1ae3e47586b3f0ae33b9918b.1449965119.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
#include "cache.h"
|
|
#include "help.h"
|
|
#include "../builtin.h"
|
|
#include "levenshtein.h"
|
|
|
|
static int autocorrect;
|
|
static struct cmdnames aliases;
|
|
|
|
static int perf_unknown_cmd_config(const char *var, const char *value, void *cb)
|
|
{
|
|
if (!strcmp(var, "help.autocorrect"))
|
|
autocorrect = perf_config_int(var,value);
|
|
/* Also use aliases for command lookup */
|
|
if (!prefixcmp(var, "alias."))
|
|
add_cmdname(&aliases, var + 6, strlen(var + 6));
|
|
|
|
return perf_default_config(var, value, cb);
|
|
}
|
|
|
|
static int levenshtein_compare(const void *p1, const void *p2)
|
|
{
|
|
const struct cmdname *const *c1 = p1, *const *c2 = p2;
|
|
const char *s1 = (*c1)->name, *s2 = (*c2)->name;
|
|
int l1 = (*c1)->len;
|
|
int l2 = (*c2)->len;
|
|
return l1 != l2 ? l1 - l2 : strcmp(s1, s2);
|
|
}
|
|
|
|
static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
|
|
{
|
|
unsigned int i;
|
|
|
|
ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc);
|
|
|
|
for (i = 0; i < old->cnt; i++)
|
|
cmds->names[cmds->cnt++] = old->names[i];
|
|
zfree(&old->names);
|
|
old->cnt = 0;
|
|
}
|
|
|
|
const char *help_unknown_cmd(const char *cmd)
|
|
{
|
|
unsigned int i, n = 0, best_similarity = 0;
|
|
struct cmdnames main_cmds, other_cmds;
|
|
|
|
memset(&main_cmds, 0, sizeof(main_cmds));
|
|
memset(&other_cmds, 0, sizeof(main_cmds));
|
|
memset(&aliases, 0, sizeof(aliases));
|
|
|
|
perf_config(perf_unknown_cmd_config, NULL);
|
|
|
|
load_command_list("perf-", &main_cmds, &other_cmds);
|
|
|
|
add_cmd_list(&main_cmds, &aliases);
|
|
add_cmd_list(&main_cmds, &other_cmds);
|
|
qsort(main_cmds.names, main_cmds.cnt,
|
|
sizeof(main_cmds.names), cmdname_compare);
|
|
uniq(&main_cmds);
|
|
|
|
if (main_cmds.cnt) {
|
|
/* This reuses cmdname->len for similarity index */
|
|
for (i = 0; i < main_cmds.cnt; ++i)
|
|
main_cmds.names[i]->len =
|
|
levenshtein(cmd, main_cmds.names[i]->name, 0, 2, 1, 4);
|
|
|
|
qsort(main_cmds.names, main_cmds.cnt,
|
|
sizeof(*main_cmds.names), levenshtein_compare);
|
|
|
|
best_similarity = main_cmds.names[0]->len;
|
|
n = 1;
|
|
while (n < main_cmds.cnt && best_similarity == main_cmds.names[n]->len)
|
|
++n;
|
|
}
|
|
|
|
if (autocorrect && n == 1) {
|
|
const char *assumed = main_cmds.names[0]->name;
|
|
|
|
main_cmds.names[0] = NULL;
|
|
clean_cmdnames(&main_cmds);
|
|
fprintf(stderr, "WARNING: You called a perf program named '%s', "
|
|
"which does not exist.\n"
|
|
"Continuing under the assumption that you meant '%s'\n",
|
|
cmd, assumed);
|
|
if (autocorrect > 0) {
|
|
fprintf(stderr, "in %0.1f seconds automatically...\n",
|
|
(float)autocorrect/10.0);
|
|
poll(NULL, 0, autocorrect * 100);
|
|
}
|
|
return assumed;
|
|
}
|
|
|
|
fprintf(stderr, "perf: '%s' is not a perf-command. See 'perf --help'.\n", cmd);
|
|
|
|
if (main_cmds.cnt && best_similarity < 6) {
|
|
fprintf(stderr, "\nDid you mean %s?\n",
|
|
n < 2 ? "this": "one of these");
|
|
|
|
for (i = 0; i < n; i++)
|
|
fprintf(stderr, "\t%s\n", main_cmds.names[i]->name);
|
|
}
|
|
|
|
exit(1);
|
|
}
|