| #include "cache.h" |
| #include "config.h" |
| #include "strbuf.h" |
| #include "run-command.h" |
| #include "sigchain.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_const("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) |
| { |
| 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_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"; |
| if (start_command(&p) < 0) { |
| 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); |
| 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); |
| } |