run-command: do not warn about child death from terminal
[git/git.git] / editor.c
CommitLineData
d82f33e2
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1#include "cache.h"
2#include "strbuf.h"
3#include "run-command.h"
913ef360 4#include "sigchain.h"
d82f33e2 5
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6#ifndef DEFAULT_EDITOR
7#define DEFAULT_EDITOR "vi"
8#endif
9
44fcb497 10const char *git_editor(void)
d82f33e2 11{
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12 const char *editor = getenv("GIT_EDITOR");
13 const char *terminal = getenv("TERM");
14 int terminal_is_dumb = !terminal || !strcmp(terminal, "dumb");
d82f33e2 15
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16 if (!editor && editor_program)
17 editor = editor_program;
d33738d7 18 if (!editor && !terminal_is_dumb)
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19 editor = getenv("VISUAL");
20 if (!editor)
21 editor = getenv("EDITOR");
22
d33738d7 23 if (!editor && terminal_is_dumb)
44fcb497 24 return NULL;
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25
26 if (!editor)
8f4b576a 27 editor = DEFAULT_EDITOR;
d82f33e2 28
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29 return editor;
30}
31
32int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
33{
34 const char *editor = git_editor();
35
36 if (!editor)
37 return error("Terminal is dumb, but EDITOR unset");
38
d82f33e2 39 if (strcmp(editor, ":")) {
bac80370 40 const char *args[] = { editor, path, NULL };
f42ca31d 41 struct child_process p;
913ef360 42 int ret;
d82f33e2 43
f42ca31d
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44 memset(&p, 0, sizeof(p));
45 p.argv = args;
46 p.env = env;
47 p.use_shell = 1;
48 if (start_command(&p) < 0)
49 return error("unable to start editor '%s'", editor);
50
913ef360
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51 sigchain_push(SIGINT, SIG_IGN);
52 sigchain_push(SIGQUIT, SIG_IGN);
53 ret = finish_command(&p);
54 sigchain_pop(SIGINT);
55 sigchain_pop(SIGQUIT);
56 if (ret)
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57 return error("There was a problem with the editor '%s'.",
58 editor);
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59 }
60
61 if (!buffer)
7198203a 62 return 0;
d82f33e2 63 if (strbuf_read_file(buffer, path, 0) < 0)
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64 return error("could not read file '%s': %s",
65 path, strerror(errno));
66 return 0;
d82f33e2 67}