Andrew's git - gitweb.git/blob

842f7829fc3a80850fd60b274bfb024b2ada130e
   1#include "cache.h"
   2#include "strbuf.h"
   3#include "run-command.h"
   4
   5#ifndef DEFAULT_EDITOR
   6#define DEFAULT_EDITOR "vi"
   7#endif
   8
   9const char *git_editor(void)
  10{
  11        const char *editor = getenv("GIT_EDITOR");
  12        const char *terminal = getenv("TERM");
  13        int terminal_is_dumb = !terminal || !strcmp(terminal, "dumb");
  14
  15        if (!editor && editor_program)
  16                editor = editor_program;
  17        if (!editor && !terminal_is_dumb)
  18                editor = getenv("VISUAL");
  19        if (!editor)
  20                editor = getenv("EDITOR");
  21
  22        if (!editor && terminal_is_dumb)
  23                return NULL;
  24
  25        if (!editor)
  26                editor = DEFAULT_EDITOR;
  27
  28        return editor;
  29}
  30
  31int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
  32{
  33        const char *editor = git_editor();
  34
  35        if (!editor)
  36                return error("Terminal is dumb, but EDITOR unset");
  37
  38        if (strcmp(editor, ":")) {
  39                const char *args[] = { editor, path, NULL };
  40                struct child_process p;
  41
  42                memset(&p, 0, sizeof(p));
  43                p.argv = args;
  44                p.env = env;
  45                p.use_shell = 1;
  46                if (start_command(&p) < 0)
  47                        return error("unable to start editor '%s'", editor);
  48
  49                if (finish_command(&p))
  50                        return error("There was a problem with the editor '%s'.",
  51                                        editor);
  52        }
  53
  54        if (!buffer)
  55                return 0;
  56        if (strbuf_read_file(buffer, path, 0) < 0)
  57                return error("could not read file '%s': %s",
  58                                path, strerror(errno));
  59        return 0;
  60}