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help: use "man.<tool>.cmd" as custom man viewer command

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Currently "git help -m GITCMD" is restricted to a set of man viewers
defined at compile time. You can subvert the "man.<tool>.path" to
force "git help -m" to use a different man, viewer, but if you have a
man viewer whose invocation syntax does not match one of the current
tools then you would have to write a wrapper script for it.

This patch adds a git config variable "man.<tool>.cmd" which allows a
more flexible man viewer choice.

If you run "git help -m GITCMD" with the "man.viewer" config variable
set to an unrecognized tool then it will query the "man.<tool>.cmd"
config variable. If this variable exists, then the specified tool will
be treated as a custom man viewer and it will be run in a shell with
the man page name of the GITCMD added as extra parameter.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2008-04-25 08:24:58 +02:00 committed by Junio C Hamano
parent 7e8114c068
commit a26a06afed
1 changed files with 40 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
help.c
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@ -163,7 +163,15 @@ static void exec_man_man(const char* path, const char *page)
warning("failed to exec '%s': %s", path, strerror(errno));
}
static void do_add_man_viewer(const char *name)
static void exec_man_cmd(const char *cmd, const char *page)
{
struct strbuf shell_cmd = STRBUF_INIT;
strbuf_addf(&shell_cmd, "%s %s", cmd, page);
execl("/bin/sh", "sh", "-c", shell_cmd.buf, NULL);
warning("failed to exec '%s': %s", cmd, strerror(errno));
}
static void add_man_viewer(const char *name)
{
struct man_viewer_list **p = &man_viewer_list;
size_t len = strlen(name);
@ -181,16 +189,6 @@ static int supported_man_viewer(const char *name, size_t len)
!strncasecmp("konqueror", name, len));
}
static int add_man_viewer(const char *value)
{
if (supported_man_viewer(value, strlen(value)))
do_add_man_viewer(value);
else
warning("'%s': unsupported man viewer.", value);
return 0;
}
static void do_add_man_viewer_info(const char *name,
size_t len,
const char *value)
@ -210,7 +208,23 @@ static int add_man_viewer_path(const char *name,
if (supported_man_viewer(name, len))
do_add_man_viewer_info(name, len, value);
else
warning("'%s': path for unsupported man viewer.", name);
warning("'%s': path for unsupported man viewer.\n"
"Please consider using 'man.<tool>.cmd' instead.",
name);
return 0;
}
static int add_man_viewer_cmd(const char *name,
size_t len,
const char *value)
{
if (supported_man_viewer(name, len))
warning("'%s': cmd for supported man viewer.\n"
"Please consider using 'man.<tool>.path' instead.",
name);
else
do_add_man_viewer_info(name, len, value);
return 0;
}
@ -228,6 +242,11 @@ static int add_man_viewer_info(const char *var, const char *value)
return config_error_nonbool(var);
return add_man_viewer_path(name, subkey - name, value);
}
if (!strcmp(subkey, ".cmd")) {
if (!value)
return config_error_nonbool(var);
return add_man_viewer_cmd(name, subkey - name, value);
}
warning("'%s': unsupported man viewer sub key.", subkey);
return 0;
@ -244,7 +263,8 @@ static int git_help_config(const char *var, const char *value)
if (!strcmp(var, "man.viewer")) {
if (!value)
return config_error_nonbool(var);
return add_man_viewer(value);
add_man_viewer(value);
return 0;
}
if (!prefixcmp(var, "man."))
return add_man_viewer_info(var, value);
@ -546,16 +566,18 @@ static void setup_man_path(void)
static void exec_viewer(const char *name, const char *page)
{
const char *path = get_man_viewer_info(name);
const char *info = get_man_viewer_info(name);
if (!strcasecmp(name, "man"))
exec_man_man(path, page);
exec_man_man(info, page);
else if (!strcasecmp(name, "woman"))
exec_woman_emacs(path, page);
exec_woman_emacs(info, page);
else if (!strcasecmp(name, "konqueror"))
exec_man_konqueror(path, page);
exec_man_konqueror(info, page);
else if (info)
exec_man_cmd(info, page);
else
warning("'%s': unsupported man viewer.", name);
warning("'%s': unknown man viewer.", name);
}
static void show_man_page(const char *git_cmd)