mirror of
https://github.com/git/git
synced 2024-11-05 18:59:29 +00:00
853ec9aa9b
An editor session launched during a Git operation (e.g. during 'git commit') can leave the terminal in a funny state. The code path has updated to save the terminal state before, and restore it after, it spawns an editor. * cm/save-restore-terminal: editor: save and reset terminal after calling EDITOR terminal: teach git how to save/restore its terminal settings
136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
#include "cache.h"
|
|
#include "config.h"
|
|
#include "strbuf.h"
|
|
#include "run-command.h"
|
|
#include "sigchain.h"
|
|
#include "compat/terminal.h"
|
|
|
|
#ifndef DEFAULT_EDITOR
|
|
#define DEFAULT_EDITOR "vi"
|
|
#endif
|
|
|
|
int is_terminal_dumb(void)
|
|
{
|
|
const char *terminal = getenv("TERM");
|
|
return !terminal || !strcmp(terminal, "dumb");
|
|
}
|
|
|
|
const char *git_editor(void)
|
|
{
|
|
const char *editor = getenv("GIT_EDITOR");
|
|
int terminal_is_dumb = is_terminal_dumb();
|
|
|
|
if (!editor && editor_program)
|
|
editor = editor_program;
|
|
if (!editor && !terminal_is_dumb)
|
|
editor = getenv("VISUAL");
|
|
if (!editor)
|
|
editor = getenv("EDITOR");
|
|
|
|
if (!editor && terminal_is_dumb)
|
|
return NULL;
|
|
|
|
if (!editor)
|
|
editor = DEFAULT_EDITOR;
|
|
|
|
return editor;
|
|
}
|
|
|
|
const char *git_sequence_editor(void)
|
|
{
|
|
const char *editor = getenv("GIT_SEQUENCE_EDITOR");
|
|
|
|
if (!editor)
|
|
git_config_get_string_tmp("sequence.editor", &editor);
|
|
if (!editor)
|
|
editor = git_editor();
|
|
|
|
return editor;
|
|
}
|
|
|
|
static int launch_specified_editor(const char *editor, const char *path,
|
|
struct strbuf *buffer, const char *const *env)
|
|
{
|
|
int term_fail;
|
|
|
|
if (!editor)
|
|
return error("Terminal is dumb, but EDITOR unset");
|
|
|
|
if (strcmp(editor, ":")) {
|
|
struct strbuf realpath = STRBUF_INIT;
|
|
const char *args[] = { editor, NULL, NULL };
|
|
struct child_process p = CHILD_PROCESS_INIT;
|
|
int ret, sig;
|
|
int print_waiting_for_editor = advice_enabled(ADVICE_WAITING_FOR_EDITOR) && isatty(2);
|
|
|
|
if (print_waiting_for_editor) {
|
|
/*
|
|
* A dumb terminal cannot erase the line later on. Add a
|
|
* newline to separate the hint from subsequent output.
|
|
*
|
|
* Make sure that our message is separated with a whitespace
|
|
* from further cruft that may be written by the editor.
|
|
*/
|
|
const char term = is_terminal_dumb() ? '\n' : ' ';
|
|
|
|
fprintf(stderr,
|
|
_("hint: Waiting for your editor to close the file...%c"),
|
|
term);
|
|
fflush(stderr);
|
|
}
|
|
|
|
strbuf_realpath(&realpath, path, 1);
|
|
args[1] = realpath.buf;
|
|
|
|
p.argv = args;
|
|
p.env = env;
|
|
p.use_shell = 1;
|
|
p.trace2_child_class = "editor";
|
|
term_fail = save_term(1);
|
|
if (start_command(&p) < 0) {
|
|
if (!term_fail)
|
|
restore_term();
|
|
strbuf_release(&realpath);
|
|
return error("unable to start editor '%s'", editor);
|
|
}
|
|
|
|
sigchain_push(SIGINT, SIG_IGN);
|
|
sigchain_push(SIGQUIT, SIG_IGN);
|
|
ret = finish_command(&p);
|
|
if (!term_fail)
|
|
restore_term();
|
|
strbuf_release(&realpath);
|
|
sig = ret - 128;
|
|
sigchain_pop(SIGINT);
|
|
sigchain_pop(SIGQUIT);
|
|
if (sig == SIGINT || sig == SIGQUIT)
|
|
raise(sig);
|
|
if (ret)
|
|
return error("There was a problem with the editor '%s'.",
|
|
editor);
|
|
|
|
if (print_waiting_for_editor && !is_terminal_dumb())
|
|
/*
|
|
* Erase the entire line to avoid wasting the
|
|
* vertical space.
|
|
*/
|
|
term_clear_line();
|
|
}
|
|
|
|
if (!buffer)
|
|
return 0;
|
|
if (strbuf_read_file(buffer, path, 0) < 0)
|
|
return error_errno("could not read file '%s'", path);
|
|
return 0;
|
|
}
|
|
|
|
int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
|
|
{
|
|
return launch_specified_editor(git_editor(), path, buffer, env);
|
|
}
|
|
|
|
int launch_sequence_editor(const char *path, struct strbuf *buffer,
|
|
const char *const *env)
|
|
{
|
|
return launch_specified_editor(git_sequence_editor(), path, buffer, env);
|
|
}
|