зеркало из https://github.com/microsoft/git.git
include $PATH in generating list of commands for "help -a"
Git had previously been using the $PATH for scripts--a previous patch moved exec'ed commands to also use the $PATH. For consistency "help -a" should also list commands in the $PATH. The main commands are still listed from the git_exec_path(), but the $PATH is walked and other git commands (probably extensions) are listed. Signed-off-by: Scott R Parish <srp@srparish.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Scott R Parish
Junio C Hamano
Родитель
511707d42b
Коммит
1eb056905a
143
help.c
143
help.c
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@ -37,24 +37,25 @@ static inline void mput_char(char c, unsigned int num)
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putchar(c);
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}
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static struct cmdname {
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static struct cmdnames {
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int alloc;
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int cnt;
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struct cmdname {
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size_t len;
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char name[1];
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} **cmdname;
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static int cmdname_alloc, cmdname_cnt;
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} **names;
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} main_cmds, other_cmds;
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static void add_cmdname(const char *name, int len)
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static void add_cmdname(struct cmdnames *cmds, const char *name, int len)
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{
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struct cmdname *ent;
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if (cmdname_alloc <= cmdname_cnt) {
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cmdname_alloc = cmdname_alloc + 200;
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cmdname = xrealloc(cmdname, cmdname_alloc * sizeof(*cmdname));
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}
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ent = xmalloc(sizeof(*ent) + len);
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struct cmdname *ent = xmalloc(sizeof(*ent) + len);
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ent->len = len;
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memcpy(ent->name, name, len);
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ent->name[len] = 0;
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cmdname[cmdname_cnt++] = ent;
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ALLOC_GROW(cmds->names, cmds->cnt + 1, cmds->alloc);
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cmds->names[cmds->cnt++] = ent;
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}
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static int cmdname_compare(const void *a_, const void *b_)
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@ -64,7 +65,42 @@ static int cmdname_compare(const void *a_, const void *b_)
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return strcmp(a->name, b->name);
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}
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static void pretty_print_string_list(struct cmdname **cmdname, int longest)
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static void uniq(struct cmdnames *cmds)
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{
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int i, j;
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if (!cmds->cnt)
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return;
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for (i = j = 1; i < cmds->cnt; i++)
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if (strcmp(cmds->names[i]->name, cmds->names[i-1]->name))
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cmds->names[j++] = cmds->names[i];
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cmds->cnt = j;
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}
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static void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes) {
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int ci, cj, ei;
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int cmp;
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ci = cj = ei = 0;
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while (ci < cmds->cnt && ei < excludes->cnt) {
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cmp = strcmp(cmds->names[ci]->name, excludes->names[ei]->name);
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if (cmp < 0)
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cmds->names[cj++] = cmds->names[ci++];
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else if (cmp == 0)
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ci++, ei++;
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else if (cmp > 0)
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ei++;
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}
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while (ci < cmds->cnt)
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cmds->names[cj++] = cmds->names[ci++];
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cmds->cnt = cj;
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}
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static void pretty_print_string_list(struct cmdnames *cmds, int longest)
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{
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int cols = 1, rows;
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int space = longest + 1; /* min 1 SP between words */
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@ -73,9 +109,7 @@ static void pretty_print_string_list(struct cmdname **cmdname, int longest)
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if (space < max_cols)
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cols = max_cols / space;
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rows = (cmdname_cnt + cols - 1) / cols;
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qsort(cmdname, cmdname_cnt, sizeof(*cmdname), cmdname_compare);
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rows = (cmds->cnt + cols - 1) / cols;
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for (i = 0; i < rows; i++) {
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printf(" ");
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@ -83,28 +117,27 @@ static void pretty_print_string_list(struct cmdname **cmdname, int longest)
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for (j = 0; j < cols; j++) {
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int n = j * rows + i;
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int size = space;
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if (n >= cmdname_cnt)
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if (n >= cmds->cnt)
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break;
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if (j == cols-1 || n + rows >= cmdname_cnt)
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if (j == cols-1 || n + rows >= cmds->cnt)
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size = 1;
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printf("%-*s", size, cmdname[n]->name);
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printf("%-*s", size, cmds->names[n]->name);
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}
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putchar('\n');
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}
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}
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static void list_commands(const char *exec_path)
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static unsigned int list_commands_in_dir(struct cmdnames *cmds,
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const char *path)
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{
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unsigned int longest = 0;
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const char *prefix = "git-";
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int prefix_len = strlen(prefix);
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DIR *dir = opendir(exec_path);
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DIR *dir = opendir(path);
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struct dirent *de;
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if (!dir || chdir(exec_path)) {
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fprintf(stderr, "git: '%s': %s\n", exec_path, strerror(errno));
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exit(1);
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}
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if (!dir || chdir(path))
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return 0;
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while ((de = readdir(dir)) != NULL) {
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struct stat st;
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@ -125,16 +158,68 @@ static void list_commands(const char *exec_path)
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if (longest < entlen)
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longest = entlen;
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add_cmdname(de->d_name + prefix_len, entlen);
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add_cmdname(cmds, de->d_name + prefix_len, entlen);
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}
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closedir(dir);
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printf("git commands available in '%s'\n", exec_path);
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return longest;
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}
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static void list_commands(void)
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{
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unsigned int longest = 0;
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unsigned int len;
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const char *env_path = getenv("PATH");
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char *paths, *path, *colon;
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const char *exec_path = git_exec_path();
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if (exec_path)
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longest = list_commands_in_dir(&main_cmds, exec_path);
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if (!env_path) {
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fprintf(stderr, "PATH not set\n");
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exit(1);
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}
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path = paths = xstrdup(env_path);
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while (1) {
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if ((colon = strchr(path, ':')))
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*colon = 0;
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len = list_commands_in_dir(&other_cmds, path);
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if (len > longest)
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longest = len;
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if (!colon)
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break;
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path = colon + 1;
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}
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free(paths);
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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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qsort(other_cmds.names, other_cmds.cnt,
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sizeof(*other_cmds.names), cmdname_compare);
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uniq(&other_cmds);
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exclude_cmds(&other_cmds, &main_cmds);
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if (main_cmds.cnt) {
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printf("available git commands in '%s'\n", exec_path);
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printf("----------------------------");
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mput_char('-', strlen(exec_path));
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putchar('\n');
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pretty_print_string_list(cmdname, longest);
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pretty_print_string_list(&main_cmds, longest);
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putchar('\n');
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}
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if (other_cmds.cnt) {
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printf("git commands available from elsewhere on your $PATH\n");
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printf("---------------------------------------------------\n");
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pretty_print_string_list(&other_cmds, longest);
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putchar('\n');
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}
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}
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void list_common_cmds_help(void)
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@ -188,7 +273,6 @@ int cmd_version(int argc, const char **argv, const char *prefix)
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int cmd_help(int argc, const char **argv, const char *prefix)
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{
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const char *help_cmd = argc > 1 ? argv[1] : NULL;
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const char *exec_path = git_exec_path();
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if (!help_cmd) {
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printf("usage: %s\n\n", git_usage_string);
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@ -198,8 +282,7 @@ int cmd_help(int argc, const char **argv, const char *prefix)
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else if (!strcmp(help_cmd, "--all") || !strcmp(help_cmd, "-a")) {
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printf("usage: %s\n\n", git_usage_string);
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if(exec_path)
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list_commands(exec_path);
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list_commands();
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exit(0);
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}
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