2b7098936c
Change a pattern of hardcoding an "argv" array size, populating it and assigning to the "argv" member of "struct child_process" to instead use "strvec_pushl()" to add data to the "args" member. This implements the same behavior as before in fewer lines of code, and moves us further towards being able to remove the "argv" member in a subsequent commit. Since we've entirely removed the "argv" variable(s) we can be sure that no potential logic errors of the type discussed in a preceding commit are being introduced here, i.e. ones where the local "argv" was being modified after the assignment to "struct child_process"'s "argv". Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
#include "cache.h"
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#include "config.h"
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#include "strbuf.h"
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#include "run-command.h"
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#include "sigchain.h"
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#ifndef DEFAULT_EDITOR
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#define DEFAULT_EDITOR "vi"
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#endif
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int is_terminal_dumb(void)
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{
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const char *terminal = getenv("TERM");
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return !terminal || !strcmp(terminal, "dumb");
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}
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const char *git_editor(void)
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{
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const char *editor = getenv("GIT_EDITOR");
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int terminal_is_dumb = is_terminal_dumb();
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if (!editor && editor_program)
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editor = editor_program;
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if (!editor && !terminal_is_dumb)
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editor = getenv("VISUAL");
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if (!editor)
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editor = getenv("EDITOR");
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if (!editor && terminal_is_dumb)
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return NULL;
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if (!editor)
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editor = DEFAULT_EDITOR;
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return editor;
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}
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const char *git_sequence_editor(void)
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{
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const char *editor = getenv("GIT_SEQUENCE_EDITOR");
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if (!editor)
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git_config_get_string_tmp("sequence.editor", &editor);
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if (!editor)
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editor = git_editor();
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return editor;
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}
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static int launch_specified_editor(const char *editor, const char *path,
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struct strbuf *buffer, const char *const *env)
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{
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if (!editor)
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return error("Terminal is dumb, but EDITOR unset");
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if (strcmp(editor, ":")) {
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struct strbuf realpath = STRBUF_INIT;
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struct child_process p = CHILD_PROCESS_INIT;
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int ret, sig;
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int print_waiting_for_editor = advice_enabled(ADVICE_WAITING_FOR_EDITOR) && isatty(2);
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if (print_waiting_for_editor) {
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/*
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* A dumb terminal cannot erase the line later on. Add a
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* newline to separate the hint from subsequent output.
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*
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* Make sure that our message is separated with a whitespace
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* from further cruft that may be written by the editor.
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*/
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const char term = is_terminal_dumb() ? '\n' : ' ';
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fprintf(stderr,
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_("hint: Waiting for your editor to close the file...%c"),
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term);
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fflush(stderr);
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}
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strbuf_realpath(&realpath, path, 1);
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strvec_pushl(&p.args, editor, realpath.buf, NULL);
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p.env = env;
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p.use_shell = 1;
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p.trace2_child_class = "editor";
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if (start_command(&p) < 0) {
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strbuf_release(&realpath);
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return error("unable to start editor '%s'", editor);
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}
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sigchain_push(SIGINT, SIG_IGN);
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sigchain_push(SIGQUIT, SIG_IGN);
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ret = finish_command(&p);
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strbuf_release(&realpath);
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sig = ret - 128;
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sigchain_pop(SIGINT);
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sigchain_pop(SIGQUIT);
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if (sig == SIGINT || sig == SIGQUIT)
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raise(sig);
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if (ret)
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return error("There was a problem with the editor '%s'.",
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editor);
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if (print_waiting_for_editor && !is_terminal_dumb())
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/*
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* Erase the entire line to avoid wasting the
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* vertical space.
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*/
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term_clear_line();
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}
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if (!buffer)
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return 0;
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if (strbuf_read_file(buffer, path, 0) < 0)
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return error_errno("could not read file '%s'", path);
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return 0;
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}
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int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
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{
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return launch_specified_editor(git_editor(), path, buffer, env);
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}
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int launch_sequence_editor(const char *path, struct strbuf *buffer,
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const char *const *env)
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{
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return launch_specified_editor(git_sequence_editor(), path, buffer, env);
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}
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