gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / editor.c
blobeebc3e95fe0c7e61f7c29fa5412ea9d4a5900f92
1 #include "cache.h"
2 #include "strbuf.h"
3 #include "run-command.h"
5 int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
7 const char *editor, *terminal;
9 editor = getenv("GIT_EDITOR");
10 if (!editor && editor_program)
11 editor = editor_program;
12 if (!editor)
13 editor = getenv("VISUAL");
14 if (!editor)
15 editor = getenv("EDITOR");
17 terminal = getenv("TERM");
18 if (!editor && (!terminal || !strcmp(terminal, "dumb")))
19 return error("Terminal is dumb but no VISUAL nor EDITOR defined.");
21 if (!editor)
22 editor = "vi";
24 if (strcmp(editor, ":")) {
25 size_t len = strlen(editor);
26 int i = 0;
27 int failed;
28 const char *args[6];
29 struct strbuf arg0;
31 strbuf_init(&arg0, 0);
32 if (strcspn(editor, "$ \t'") != len) {
33 /* there are specials */
34 strbuf_addf(&arg0, "%s \"$@\"", editor);
35 args[i++] = "sh";
36 args[i++] = "-c";
37 args[i++] = arg0.buf;
39 args[i++] = editor;
40 args[i++] = path;
41 args[i] = NULL;
43 failed = run_command_v_opt_cd_env(args, 0, NULL, env);
44 strbuf_release(&arg0);
45 if (failed)
46 return error("There was a problem with the editor '%s'.",
47 editor);
50 if (!buffer)
51 return 0;
52 if (strbuf_read_file(buffer, path, 0) < 0)
53 return error("could not read file '%s': %s",
54 path, strerror(errno));
55 return 0;