summaryrefslogtreecommitdiff
path: root/editor.c
blob: d8340031d24828483697c10257806efedfe041f5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
#include "cache.h"
#include "strbuf.h"
#include "run-command.h"
 
#ifndef DEFAULT_EDITOR
#define DEFAULT_EDITOR "vi"
#endif
 
const char *git_editor(void)
{
	const char *editor = getenv("GIT_EDITOR");
	const char *terminal = getenv("TERM");
	int terminal_is_dumb = !terminal || !strcmp(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;
}
 
int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
{
	const char *editor = git_editor();
 
	if (!editor)
		return error("Terminal is dumb, but EDITOR unset");
 
	if (strcmp(editor, ":")) {
		const char *args[] = { editor, path, NULL };
 
		if (run_command_v_opt_cd_env(args, RUN_USING_SHELL, NULL, env))
			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;
}