[PATCH 3/5] builtin-help: make it possible to exclude some commands in list_commands()
The supposed method is to build a list of commands to be excluded using add_cmdname(), then pass the list as the new exclude parameter. If no exclude is needed, NULL should be used.
Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
---
On Tue, Jul 29, 2008 at 12:46:59PM -0700, Junio C Hamano <gitster@pobox.com> wrote:
> You require that exclude is a sorted list; this should be documented
> somewhere to avoid future misuses.
This version now adds a comment in load_command_list() about this.
help.c | 27 ++++++++++++---------------
help.h | 14 +++++++++++++-
2 files changed, 25 insertions(+), 16 deletions(-)
Show changes to 2 files +25 −16
help.c, help.h
diff --git a/help.c b/help.c
index 7a42517..26aa3e0 100644
--- a/help.c
+++ b/help.c
@@ -9,6 +9,7 @@
#include "common-cmds.h"
#include "parse-options.h"
#include "run-command.h"
+#include "help.h"
static struct man_viewer_list {
struct man_viewer_list *next;
@@ -300,18 +301,11 @@ static inline void mput_char(char c, unsigned int num)
putchar(c);
}
-static struct cmdnames {
- int alloc;
- int cnt;
- struct cmdname {
- size_t len;
- char name[1];
- } **names;
-} main_cmds, other_cmds;
+struct cmdnames main_cmds, other_cmds;
-static void add_cmdname(struct cmdnames *cmds, const char *name, int len)
+void add_cmdname(struct cmdnames *cmds, const char *name, int len)
{
- struct cmdname *ent = xmalloc(sizeof(*ent) + len);
+ struct cmdname *ent = xmalloc(sizeof(*ent) + len + 1);
ent->len = len;
memcpy(ent->name, name, len);
@@ -463,7 +457,7 @@ static unsigned int list_commands_in_dir(struct cmdnames *cmds,
return longest;
}
-static unsigned int load_command_list(const char *prefix)
+static unsigned int load_command_list(const char *prefix, struct cmdnames *exclude)
{
unsigned int longest = 0;
unsigned int len;
@@ -502,13 +496,16 @@ static unsigned int load_command_list(const char *prefix)
sizeof(*other_cmds.names), cmdname_compare);
uniq(&other_cmds);
exclude_cmds(&other_cmds, &main_cmds);
+ if (exclude)
+ /* Here we require that exclude is a sorted list. */
+ exclude_cmds(&main_cmds, exclude);
return longest;
}
-void list_commands(const char *prefix, const char *title)
+void list_commands(const char *prefix, const char *title, struct cmdnames *exclude)
{
- unsigned int longest = load_command_list(prefix);
+ unsigned int longest = load_command_list(prefix, exclude);
const char *exec_path = git_exec_path();
if (main_cmds.cnt) {
@@ -558,7 +555,7 @@ static int is_in_cmdlist(struct cmdnames *c, const char *s)
int is_git_command(const char *s, const char *prefix)
{
- load_command_list(prefix);
+ load_command_list(prefix, NULL);
return is_in_cmdlist(&main_cmds, s) ||
is_in_cmdlist(&other_cmds, s);
}
@@ -704,7 +701,7 @@ int cmd_help(int argc, const char **argv, const char *prefix)
if (show_all) {
printf("usage: %s\n\n", git_usage_string);
- list_commands("git-", "git commands");
+ list_commands("git-", "git commands", NULL);
printf("%s\n", git_more_info_string);
return 0;
}
diff --git a/help.h b/help.h
index 0741662..3eb8cfb 100644
--- a/help.h
+++ b/help.h
@@ -1,7 +1,19 @@
#ifndef HELP_H
#define HELP_H
+struct cmdnames {
+ int alloc;
+ int cnt;
+ struct cmdname {
+ size_t len;
+ char name[FLEX_ARRAY];
+ } **names;
+};
+
int is_git_command(const char *s, const char *prefix);
-void list_commands(const char *prefix, const char *title);
+void list_commands(const char *prefix, const char *title, struct cmdnames *exclude);
+void add_cmdname(struct cmdnames *cmds, const char *name, int len);
+
+extern struct cmdnames main_cmds, other_cmds;
#endif /* HELP_H */
--
1.6.0.rc0.14.g95f8.dirty
Miklos Vajna