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Diffstat (limited to 'setup.c')
| -rw-r--r-- | setup.c | 23 |
1 files changed, 23 insertions, 0 deletions
@@ -62,6 +62,29 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg) return path; } +/* + * Verify a filename that we got as an argument for a pathspec + * entry. Note that a filename that begins with "-" never verifies + * as true, because even if such a filename were to exist, we want + * it to be preceded by the "--" marker (or we want the user to + * use a format like "./-filename") + */ +void verify_filename(const char *prefix, const char *arg) +{ + const char *name; + struct stat st; + + if (*arg == '-') + die("bad flag '%s' used after filename", arg); + name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg; + if (!lstat(name, &st)) + return; + if (errno == ENOENT) + die("ambiguous argument '%s': unknown revision or filename\n" + "Use '--' to separate filenames from revisions", arg); + die("'%s': %s", arg, strerror(errno)); +} + const char **get_pathspec(const char *prefix, const char **pathspec) { const char *entry = *pathspec; |