#include "exec_cmd.h"
#include "levenshtein.h"
#include "help.h"
+#include "common-cmds.h"
/* most GUI terminals set COLUMNS (although some don't export it) */
static int term_columns(void)
if (space < max_cols)
cols = max_cols / space;
- rows = (cmds->cnt + cols - 1) / cols;
+ rows = DIV_ROUND_UP(cmds->cnt, cols);
for (i = 0; i < rows; i++) {
printf(" ");
!S_ISREG(st.st_mode))
return 0;
-#ifdef __MINGW32__
- /* cannot trust the executable bit, peek into the file instead */
+#ifdef WIN32
+{ /* cannot trust the executable bit, peek into the file instead */
char buf[3] = { 0 };
int n;
int fd = open(name, O_RDONLY);
st.st_mode |= S_IXUSR;
close(fd);
}
+}
#endif
return st.st_mode & S_IXUSR;
}
while (1) {
if ((colon = strchr(path, PATH_SEP)))
*colon = 0;
-
- list_commands_in_dir(other_cmds, path, prefix);
+ if (!exec_path || strcmp(path, exec_path))
+ list_commands_in_dir(other_cmds, path, prefix);
if (!colon)
break;
}
static int autocorrect;
+static struct cmdnames aliases;
static int git_unknown_cmd_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "help.autocorrect"))
autocorrect = git_config_int(var,value);
+ /* Also use aliases for command lookup */
+ if (!prefixcmp(var, "alias."))
+ add_cmdname(&aliases, var + 6, strlen(var + 6));
return git_default_config(var, value, cb);
}
return l1 != l2 ? l1 - l2 : strcmp(s1, s2);
}
+static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
+{
+ 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];
+ free(old->names);
+ old->cnt = 0;
+ old->names = NULL;
+}
+
+/* An empirically derived magic number */
+#define SIMILARITY_FLOOR 7
+#define SIMILAR_ENOUGH(x) ((x) < SIMILARITY_FLOOR)
+
const char *help_unknown_cmd(const char *cmd)
{
int i, n, best_similarity = 0;
struct cmdnames main_cmds, other_cmds;
memset(&main_cmds, 0, sizeof(main_cmds));
- memset(&other_cmds, 0, sizeof(main_cmds));
+ memset(&other_cmds, 0, sizeof(other_cmds));
+ memset(&aliases, 0, sizeof(aliases));
git_config(git_unknown_cmd_config, NULL);
load_command_list("git-", &main_cmds, &other_cmds);
- ALLOC_GROW(main_cmds.names, main_cmds.cnt + other_cmds.cnt,
- main_cmds.alloc);
- memcpy(main_cmds.names + main_cmds.cnt, other_cmds.names,
- other_cmds.cnt * sizeof(other_cmds.names[0]));
- main_cmds.cnt += other_cmds.cnt;
- free(other_cmds.names);
+ 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);
+
+ /* This abuses cmdname->len for levenshtein distance */
+ for (i = 0, n = 0; i < main_cmds.cnt; i++) {
+ int cmp = 0; /* avoid compiler stupidity */
+ const char *candidate = main_cmds.names[i]->name;
+
+ /* Does the candidate appear in common_cmds list? */
+ while (n < ARRAY_SIZE(common_cmds) &&
+ (cmp = strcmp(common_cmds[n].name, candidate)) < 0)
+ n++;
+ if ((n < ARRAY_SIZE(common_cmds)) && !cmp) {
+ /* Yes, this is one of the common commands */
+ n++; /* use the entry from common_cmds[] */
+ if (!prefixcmp(candidate, cmd)) {
+ /* Give prefix match a very good score */
+ main_cmds.names[i]->len = 0;
+ continue;
+ }
+ }
- /* 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);
+ levenshtein(cmd, candidate, 0, 2, 1, 4) + 1;
+ }
qsort(main_cmds.names, main_cmds.cnt,
sizeof(*main_cmds.names), levenshtein_compare);
if (!main_cmds.cnt)
die ("Uh oh. Your system reports no Git commands at all.");
- 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) {
+ /* skip and count prefix matches */
+ for (n = 0; n < main_cmds.cnt && !main_cmds.names[n]->len; n++)
+ ; /* still counting */
+
+ if (main_cmds.cnt <= n) {
+ /* prefix matches with everything? that is too ambiguous */
+ best_similarity = SIMILARITY_FLOOR + 1;
+ } else {
+ /* count all the most similar ones */
+ for (best_similarity = main_cmds.names[n++]->len;
+ (n < main_cmds.cnt &&
+ best_similarity == main_cmds.names[n]->len);
+ n++)
+ ; /* still counting */
+ }
+ if (autocorrect && n == 1 && SIMILAR_ENOUGH(best_similarity)) {
const char *assumed = main_cmds.names[0]->name;
main_cmds.names[0] = NULL;
clean_cmdnames(&main_cmds);
- fprintf(stderr, "WARNING: You called a Git program named '%s', "
+ fprintf(stderr, "WARNING: You called a Git command named '%s', "
"which does not exist.\n"
"Continuing under the assumption that you meant '%s'\n",
cmd, assumed);
return assumed;
}
- fprintf(stderr, "git: '%s' is not a git-command. See 'git --help'.\n", cmd);
+ fprintf(stderr, "git: '%s' is not a git command. See 'git --help'.\n", cmd);
- if (best_similarity < 6) {
+ if (SIMILAR_ENOUGH(best_similarity)) {
fprintf(stderr, "\nDid you mean %s?\n",
n < 2 ? "this": "one of these");