Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "strbuf.h"
   3#include "run-command.h"
   4
   5int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
   6{
   7        const char *editor, *terminal;
   8
   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");
  16
  17        terminal = getenv("TERM");
  18        if (!editor && (!terminal || !strcmp(terminal, "dumb")))
  19                return error("Terminal is dumb but no VISUAL nor EDITOR defined.");
  20
  21        if (!editor)
  22                editor = "vi";
  23
  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;
  30
  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;
  38                }
  39                args[i++] = editor;
  40                args[i++] = path;
  41                args[i] = NULL;
  42
  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);
  48        }
  49
  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;
  56}