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 = getenv("GIT_EDITOR");
   8        const char *terminal = getenv("TERM");
   9        int terminal_is_dumb = !terminal || !strcmp(terminal, "dumb");
  10
  11        if (!editor && editor_program)
  12                editor = editor_program;
  13        if (!editor && !terminal_is_dumb)
  14                editor = getenv("VISUAL");
  15        if (!editor)
  16                editor = getenv("EDITOR");
  17
  18        if (!editor && terminal_is_dumb)
  19                return error("terminal is dumb, but EDITOR unset");
  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 = STRBUF_INIT;
  30
  31                if (strcspn(editor, "|&;<>()$`\\\"' \t\n*?[#~=%") != len) {
  32                        /* there are specials */
  33                        strbuf_addf(&arg0, "%s \"$@\"", editor);
  34                        args[i++] = "sh";
  35                        args[i++] = "-c";
  36                        args[i++] = arg0.buf;
  37                }
  38                args[i++] = editor;
  39                args[i++] = path;
  40                args[i] = NULL;
  41
  42                failed = run_command_v_opt_cd_env(args, 0, NULL, env);
  43                strbuf_release(&arg0);
  44                if (failed)
  45                        return error("There was a problem with the editor '%s'.",
  46                                        editor);
  47        }
  48
  49        if (!buffer)
  50                return 0;
  51        if (strbuf_read_file(buffer, path, 0) < 0)
  52                return error("could not read file '%s': %s",
  53                                path, strerror(errno));
  54        return 0;
  55}