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perf tools: Move help_unknown_cmd() to its own file
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>
This commit is contained in:
Josh Poimboeuf
Arnaldo Carvalho de Melo
parent
a871a77517
commit
5feaac248a
@ -87,6 +87,7 @@ libperf-$(CONFIG_AUXTRACE) += intel-bts.o
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libperf-y += parse-branch-options.o
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libperf-y += parse-regs-options.o
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libperf-y += term.o
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libperf-y += help-unknown-cmd.o
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libperf-$(CONFIG_LIBBPF) += bpf-loader.o
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libperf-$(CONFIG_BPF_PROLOGUE) += bpf-prologue.o
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103
tools/perf/util/help-unknown-cmd.c
Normal file
103
tools/perf/util/help-unknown-cmd.c
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@ -0,0 +1,103 @@
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#include "cache.h"
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#include "help.h"
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#include "../builtin.h"
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#include "levenshtein.h"
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static int autocorrect;
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static struct cmdnames aliases;
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static int perf_unknown_cmd_config(const char *var, const char *value, void *cb)
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{
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if (!strcmp(var, "help.autocorrect"))
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autocorrect = perf_config_int(var,value);
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/* Also use aliases for command lookup */
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if (!prefixcmp(var, "alias."))
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add_cmdname(&aliases, var + 6, strlen(var + 6));
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return perf_default_config(var, value, cb);
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}
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static int levenshtein_compare(const void *p1, const void *p2)
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{
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const struct cmdname *const *c1 = p1, *const *c2 = p2;
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const char *s1 = (*c1)->name, *s2 = (*c2)->name;
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int l1 = (*c1)->len;
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int l2 = (*c2)->len;
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return l1 != l2 ? l1 - l2 : strcmp(s1, s2);
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}
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static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
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{
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unsigned int i;
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ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc);
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for (i = 0; i < old->cnt; i++)
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cmds->names[cmds->cnt++] = old->names[i];
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zfree(&old->names);
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old->cnt = 0;
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}
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const char *help_unknown_cmd(const char *cmd)
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{
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unsigned int i, n = 0, best_similarity = 0;
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struct cmdnames main_cmds, other_cmds;
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memset(&main_cmds, 0, sizeof(main_cmds));
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memset(&other_cmds, 0, sizeof(main_cmds));
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memset(&aliases, 0, sizeof(aliases));
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perf_config(perf_unknown_cmd_config, NULL);
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load_command_list("perf-", &main_cmds, &other_cmds);
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add_cmd_list(&main_cmds, &aliases);
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add_cmd_list(&main_cmds, &other_cmds);
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qsort(main_cmds.names, main_cmds.cnt,
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sizeof(main_cmds.names), cmdname_compare);
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uniq(&main_cmds);
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if (main_cmds.cnt) {
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/* This reuses cmdname->len for similarity index */
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for (i = 0; i < main_cmds.cnt; ++i)
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main_cmds.names[i]->len =
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levenshtein(cmd, main_cmds.names[i]->name, 0, 2, 1, 4);
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qsort(main_cmds.names, main_cmds.cnt,
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sizeof(*main_cmds.names), levenshtein_compare);
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best_similarity = main_cmds.names[0]->len;
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n = 1;
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while (n < main_cmds.cnt && best_similarity == main_cmds.names[n]->len)
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++n;
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}
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if (autocorrect && n == 1) {
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const char *assumed = main_cmds.names[0]->name;
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main_cmds.names[0] = NULL;
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clean_cmdnames(&main_cmds);
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fprintf(stderr, "WARNING: You called a perf program named '%s', "
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"which does not exist.\n"
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"Continuing under the assumption that you meant '%s'\n",
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cmd, assumed);
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if (autocorrect > 0) {
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fprintf(stderr, "in %0.1f seconds automatically...\n",
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(float)autocorrect/10.0);
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poll(NULL, 0, autocorrect * 100);
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}
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return assumed;
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}
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fprintf(stderr, "perf: '%s' is not a perf-command. See 'perf --help'.\n", cmd);
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if (main_cmds.cnt && best_similarity < 6) {
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fprintf(stderr, "\nDid you mean %s?\n",
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n < 2 ? "this": "one of these");
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for (i = 0; i < n; i++)
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fprintf(stderr, "\t%s\n", main_cmds.names[i]->name);
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}
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exit(1);
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}
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0
tools/perf/util/help-unknown-cmd.h
Normal file
0
tools/perf/util/help-unknown-cmd.h
Normal file
@ -1,9 +1,7 @@
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#include "cache.h"
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#include "../builtin.h"
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#include "exec_cmd.h"
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#include "levenshtein.h"
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#include "help.h"
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#include <termios.h>
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void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
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{
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@ -17,7 +15,7 @@ void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
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cmds->names[cmds->cnt++] = ent;
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}
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static void clean_cmdnames(struct cmdnames *cmds)
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void clean_cmdnames(struct cmdnames *cmds)
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{
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unsigned int i;
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@ -28,14 +26,14 @@ static void clean_cmdnames(struct cmdnames *cmds)
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cmds->alloc = 0;
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}
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static int cmdname_compare(const void *a_, const void *b_)
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int cmdname_compare(const void *a_, const void *b_)
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{
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struct cmdname *a = *(struct cmdname **)a_;
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struct cmdname *b = *(struct cmdname **)b_;
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return strcmp(a->name, b->name);
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}
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static void uniq(struct cmdnames *cmds)
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void uniq(struct cmdnames *cmds)
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{
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unsigned int i, j;
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@ -233,102 +231,3 @@ int is_in_cmdlist(struct cmdnames *c, const char *s)
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return 1;
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return 0;
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}
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static int autocorrect;
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static struct cmdnames aliases;
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static int perf_unknown_cmd_config(const char *var, const char *value, void *cb)
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{
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if (!strcmp(var, "help.autocorrect"))
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autocorrect = perf_config_int(var,value);
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/* Also use aliases for command lookup */
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if (!prefixcmp(var, "alias."))
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add_cmdname(&aliases, var + 6, strlen(var + 6));
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return perf_default_config(var, value, cb);
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}
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static int levenshtein_compare(const void *p1, const void *p2)
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{
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const struct cmdname *const *c1 = p1, *const *c2 = p2;
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const char *s1 = (*c1)->name, *s2 = (*c2)->name;
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int l1 = (*c1)->len;
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int l2 = (*c2)->len;
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return l1 != l2 ? l1 - l2 : strcmp(s1, s2);
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}
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static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
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{
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unsigned int i;
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ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc);
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for (i = 0; i < old->cnt; i++)
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cmds->names[cmds->cnt++] = old->names[i];
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zfree(&old->names);
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old->cnt = 0;
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}
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const char *help_unknown_cmd(const char *cmd)
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{
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unsigned int i, n = 0, best_similarity = 0;
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struct cmdnames main_cmds, other_cmds;
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memset(&main_cmds, 0, sizeof(main_cmds));
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memset(&other_cmds, 0, sizeof(main_cmds));
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memset(&aliases, 0, sizeof(aliases));
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perf_config(perf_unknown_cmd_config, NULL);
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load_command_list("perf-", &main_cmds, &other_cmds);
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add_cmd_list(&main_cmds, &aliases);
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add_cmd_list(&main_cmds, &other_cmds);
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qsort(main_cmds.names, main_cmds.cnt,
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sizeof(main_cmds.names), cmdname_compare);
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uniq(&main_cmds);
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if (main_cmds.cnt) {
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/* This reuses cmdname->len for similarity index */
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for (i = 0; i < main_cmds.cnt; ++i)
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main_cmds.names[i]->len =
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levenshtein(cmd, main_cmds.names[i]->name, 0, 2, 1, 4);
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qsort(main_cmds.names, main_cmds.cnt,
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sizeof(*main_cmds.names), levenshtein_compare);
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best_similarity = main_cmds.names[0]->len;
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n = 1;
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while (n < main_cmds.cnt && best_similarity == main_cmds.names[n]->len)
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++n;
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}
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if (autocorrect && n == 1) {
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const char *assumed = main_cmds.names[0]->name;
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main_cmds.names[0] = NULL;
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clean_cmdnames(&main_cmds);
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fprintf(stderr, "WARNING: You called a perf program named '%s', "
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"which does not exist.\n"
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"Continuing under the assumption that you meant '%s'\n",
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cmd, assumed);
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if (autocorrect > 0) {
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fprintf(stderr, "in %0.1f seconds automatically...\n",
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(float)autocorrect/10.0);
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poll(NULL, 0, autocorrect * 100);
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}
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return assumed;
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}
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fprintf(stderr, "perf: '%s' is not a perf-command. See 'perf --help'.\n", cmd);
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if (main_cmds.cnt && best_similarity < 6) {
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fprintf(stderr, "\nDid you mean %s?\n",
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n < 2 ? "this": "one of these");
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for (i = 0; i < n; i++)
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fprintf(stderr, "\t%s\n", main_cmds.names[i]->name);
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}
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exit(1);
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}
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@ -20,6 +20,9 @@ void load_command_list(const char *prefix,
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struct cmdnames *main_cmds,
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struct cmdnames *other_cmds);
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void add_cmdname(struct cmdnames *cmds, const char *name, size_t len);
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void clean_cmdnames(struct cmdnames *cmds);
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int cmdname_compare(const void *a, const void *b);
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void uniq(struct cmdnames *cmds);
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/* Here we require that excludes is a sorted list. */
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void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes);
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int is_in_cmdlist(struct cmdnames *c, const char *s);
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