diff options
Diffstat (limited to 'diff-lib.c')
| -rw-r--r-- | diff-lib.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/diff-lib.c b/diff-lib.c index 778cf58244..6abb981534 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -30,22 +30,28 @@ static int read_directory(const char *path, struct path_list *list) return 0; } +static int get_mode(const char *path, int *mode) +{ + struct stat st; + + if (!path || !strcmp(path, "/dev/null")) + *mode = 0; + else if (!strcmp(path, "-")) + *mode = ntohl(create_ce_mode(0666)); + else if (stat(path, &st)) + return error("Could not access '%s'", path); + else + *mode = st.st_mode; + return 0; +} + static int queue_diff(struct diff_options *o, const char *name1, const char *name2) { - struct stat st; int mode1 = 0, mode2 = 0; - if (name1) { - if (stat(name1, &st)) - return error("Could not access '%s'", name1); - mode1 = st.st_mode; - } - if (name2) { - if (stat(name2, &st)) - return error("Could not access '%s'", name2); - mode2 = st.st_mode; - } + if (get_mode(name1, &mode1) || get_mode(name2, &mode2)) + return -1; if (mode1 && mode2 && S_ISDIR(mode1) != S_ISDIR(mode2)) return error("file/directory conflict: %s, %s", name1, name2); @@ -224,7 +230,7 @@ int setup_diff_no_index(struct rev_info *revs, { int i; for (i = 1; i < argc; i++) - if (argv[i][0] != '-') + if (argv[i][0] != '-' || argv[i][1] == '\0') break; else if (!strcmp(argv[i], "--")) { i++; @@ -254,9 +260,15 @@ int setup_diff_no_index(struct rev_info *revs, revs->diffopt.paths = xcalloc(2, sizeof(char*)); for (i = 0; i < 2; i++) { - const char *p; - p = prefix_filename(prefix, len, argv[argc - 2 + i]); - revs->diffopt.paths[i] = xstrdup(p); + const char *p = argv[argc - 2 + i]; + /* + * stdin should be spelled as '-'; if you have + * path that is '-', spell it as ./-. + */ + p = (strcmp(p, "-") + ? xstrdup(prefix_filename(prefix, len, p)) + : p); + revs->diffopt.paths[i] = p; } } else |