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git-help: add -i|--info option to display info page. 

"git help --info subcommand" will now call "info git-subcommand".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Christian Couder 2007-12-02 06:07:40 +01:00 committed by Junio C Hamano
parent 0f6f195b77
commit df55c9cbc3
1 changed files with 27 additions and 8 deletions
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35
help.c
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@ -239,24 +239,32 @@ void list_common_cmds_help(void)
} }
} }


static void show_man_page(const char *git_cmd) static const char *cmd_to_page(const char *git_cmd)
{ {
const char *page;

if (!prefixcmp(git_cmd, "git")) if (!prefixcmp(git_cmd, "git"))
page = git_cmd; return git_cmd;
else { else {
int page_len = strlen(git_cmd) + 4; int page_len = strlen(git_cmd) + 4;
char *p = xmalloc(page_len + 1); char *p = xmalloc(page_len + 1);
strcpy(p, "git-"); strcpy(p, "git-");
strcpy(p + 4, git_cmd); strcpy(p + 4, git_cmd);
p[page_len] = 0; p[page_len] = 0;
page = p; return p;
} }
}


static void show_man_page(const char *git_cmd)
{
const char *page = cmd_to_page(git_cmd);
execlp("man", "man", page, NULL); execlp("man", "man", page, NULL);
} }


static void show_info_page(const char *git_cmd)
{
const char *page = cmd_to_page(git_cmd);
execlp("info", "info", page, NULL);
}

void help_unknown_cmd(const char *cmd) void help_unknown_cmd(const char *cmd)
{ {
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);
@ -269,10 +277,8 @@ int cmd_version(int argc, const char **argv, const char *prefix)
return 0; return 0;
} }


int cmd_help(int argc, const char **argv, const char *prefix) static void check_help_cmd(const char *help_cmd)
{ {
const char *help_cmd = argc > 1 ? argv[1] : NULL;

if (!help_cmd) { if (!help_cmd) {
printf("usage: %s\n\n", git_usage_string); printf("usage: %s\n\n", git_usage_string);
list_common_cmds_help(); list_common_cmds_help();
@ -284,6 +290,19 @@ int cmd_help(int argc, const char **argv, const char *prefix)
list_commands(); list_commands();
exit(0); exit(0);
} }
}

int cmd_help(int argc, const char **argv, const char *prefix)
{
const char *help_cmd = argc > 1 ? argv[1] : NULL;
check_help_cmd(help_cmd);

if (!strcmp(help_cmd, "--info") || !strcmp(help_cmd, "-i")) {
help_cmd = argc > 2 ? argv[2] : NULL;
check_help_cmd(help_cmd);

show_info_page(help_cmd);
}


else else
show_man_page(help_cmd); show_man_page(help_cmd);