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git/editor.c
Stephan Beyer 7198203ae3 editor.c: Libify launch_editor()
This patch removes exit()/die() calls and builtin-specific messages
from launch_editor(), so that it can be used as a general libgit.a
function to launch an editor.

Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-25 17:09:38 -07:00

56 lines
1.3 KiB
C

#include "cache.h"
#include "strbuf.h"
#include "run-command.h"
int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
{
const char *editor, *terminal;
editor = getenv("GIT_EDITOR");
if (!editor && editor_program)
editor = editor_program;
if (!editor)
editor = getenv("VISUAL");
if (!editor)
editor = getenv("EDITOR");
terminal = getenv("TERM");
if (!editor && (!terminal || !strcmp(terminal, "dumb")))
return error("Terminal is dumb but no VISUAL nor EDITOR defined.");
if (!editor)
editor = "vi";
if (strcmp(editor, ":")) {
size_t len = strlen(editor);
int i = 0;
int failed;
const char *args[6];
struct strbuf arg0;
strbuf_init(&arg0, 0);
if (strcspn(editor, "$ \t'") != len) {
/* there are specials */
strbuf_addf(&arg0, "%s \"$@\"", editor);
args[i++] = "sh";
args[i++] = "-c";
args[i++] = arg0.buf;
}
args[i++] = editor;
args[i++] = path;
args[i] = NULL;
failed = run_command_v_opt_cd_env(args, 0, NULL, env);
strbuf_release(&arg0);
if (failed)
return error("There was a problem with the editor '%s'.",
editor);
}
if (!buffer)
return 0;
if (strbuf_read_file(buffer, path, 0) < 0)
return error("could not read file '%s': %s",
path, strerror(errno));
return 0;
}