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c7c4bdeccf
Remove the "env" member from "struct child_process" in favor of always
using the "env_array". As with the preceding removal of "argv" in
favor of "args" this gets rid of current and future oddities around
memory management at the API boundary (see the amended API docs).
For some of the conversions we can replace patterns like:
child.env = env->v;
With:
strvec_pushv(&child.env_array, env->v);
But for others we need to guard the strvec_pushv() with a NULL check,
since we're not passing in the "v" member of a "struct strvec",
e.g. in the case of tmp_objdir_env()'s return value.
Ideally we'd rename the "env_array" member to simply "env" as a
follow-up, since it and "args" are now inconsistent in not having an
"_array" suffix, and seemingly without any good reason, unless we look
at the history of how they came to be.
But as we've currently got 122 in-tree hits for a "git grep env_array"
let's leave that for now (and possibly forever). Doing that rename
would be too disruptive.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
128 lines
3 KiB
C
128 lines
3 KiB
C
#include "cache.h"
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#include "config.h"
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#include "strbuf.h"
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#include "strvec.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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if (env)
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strvec_pushv(&p.env_array, (const char **)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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