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editor.c

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#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;

}