diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 52 |
1 files changed, 51 insertions, 1 deletions
@@ -558,7 +558,7 @@ static void builtin_diff(const char *name_a, ecbdata.label_path = lbl; xpp.flags = XDF_NEED_MINIMAL; - xecfg.ctxlen = 3; + xecfg.ctxlen = o->context; xecfg.flags = XDL_EMIT_FUNCNAMES; if (!diffopts) ; @@ -1182,6 +1182,7 @@ void diff_setup(struct diff_options *options) options->line_termination = '\n'; options->break_opt = -1; options->rename_limit = -1; + options->context = 3; options->change = diff_change; options->add_remove = diff_addremove; @@ -1222,11 +1223,60 @@ int diff_setup_done(struct diff_options *options) return 0; } +int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val) +{ + char c, *eq; + int len; + + if (*arg != '-') + return 0; + c = *++arg; + if (!c) + return 0; + if (c == arg_short) { + c = *++arg; + if (!c) + return 1; + if (val && isdigit(c)) { + char *end; + int n = strtoul(arg, &end, 10); + if (*end) + return 0; + *val = n; + return 1; + } + return 0; + } + if (c != '-') + return 0; + arg++; + eq = strchr(arg, '='); + if (eq) + len = eq - arg; + else + len = strlen(arg); + if (!len || strncmp(arg, arg_long, len)) + return 0; + if (eq) { + int n; + char *end; + if (!isdigit(*++eq)) + return 0; + n = strtoul(eq, &end, 10); + if (*end) + return 0; + *val = n; + } + return 1; +} + int diff_opt_parse(struct diff_options *options, const char **av, int ac) { const char *arg = av[0]; if (!strcmp(arg, "-p") || !strcmp(arg, "-u")) options->output_format = DIFF_FORMAT_PATCH; + else if (opt_arg(arg, 'U', "unified", &options->context)) + options->output_format = DIFF_FORMAT_PATCH; else if (!strcmp(arg, "--patch-with-raw")) { options->output_format = DIFF_FORMAT_PATCH; options->with_raw = 1; |