Andrew's git - gitweb.git/blob

   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                size_t len = strlen(editor);
  40                int i = 0;
  41                int failed;
  42                const char *args[6];
  43                struct strbuf arg0 = STRBUF_INIT;
  44
  45                if (strcspn(editor, "|&;<>()$`\\\"' \t\n*?[#~=%") != len) {
  46                        /* there are specials */
  47                        strbuf_addf(&arg0, "%s \"$@\"", editor);
  48                        args[i++] = "sh";
  49                        args[i++] = "-c";
  50                        args[i++] = arg0.buf;
  51                }
  52                args[i++] = editor;
  53                args[i++] = path;
  54                args[i] = NULL;
  55
  56                failed = run_command_v_opt_cd_env(args, 0, NULL, env);
  57                strbuf_release(&arg0);
  58                if (failed)
  59                        return error("There was a problem with the editor '%s'.",
  60                                        editor);
  61        }
  62
  63        if (!buffer)
  64                return 0;
  65        if (strbuf_read_file(buffer, path, 0) < 0)
  66                return error("could not read file '%s': %s",
  67                                path, strerror(errno));
  68        return 0;
  69}