return 1;
}
-static int diff_scoreopt_parse(const char *opt);
-
static inline int short_opt(char opt, const char **argv,
const char **optarg)
{
return 1;
}
+static int diff_opt_anchored(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
+ ALLOC_GROW(options->anchors, options->anchors_nr + 1,
+ options->anchors_alloc);
+ options->anchors[options->anchors_nr++] = xstrdup(arg);
+ return 0;
+}
+
+static int diff_opt_binary(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+ enable_patch_output(&options->output_format);
+ options->flags.binary = 1;
+ return 0;
+}
+
static int diff_opt_break_rewrites(const struct option *opt,
const char *arg, int unset)
{
return 0;
}
+static int diff_opt_diff_algorithm(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+ long value = parse_algorithm_value(arg);
+
+ BUG_ON_OPT_NEG(unset);
+ if (value < 0)
+ return error(_("option diff-algorithm accepts \"myers\", "
+ "\"minimal\", \"patience\" and \"histogram\""));
+
+ /* clear out previous settings */
+ DIFF_XDL_CLR(options, NEED_MINIMAL);
+ options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
+ options->xdl_opts |= value;
+ return 0;
+}
+
static int diff_opt_dirstat(const struct option *opt,
const char *arg, int unset)
{
return 0;
}
+static int diff_opt_find_copies(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ if (!arg)
+ arg = "";
+ options->rename_score = parse_rename_score(&arg);
+ if (*arg != 0)
+ return error(_("invalid argument to %s"), opt->long_name);
+
+ if (options->detect_rename == DIFF_DETECT_COPY)
+ options->flags.find_copies_harder = 1;
+ else
+ options->detect_rename = DIFF_DETECT_COPY;
+
+ return 0;
+}
+
+static int diff_opt_find_renames(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ if (!arg)
+ arg = "";
+ options->rename_score = parse_rename_score(&arg);
+ if (*arg != 0)
+ return error(_("invalid argument to %s"), opt->long_name);
+
+ options->detect_rename = DIFF_DETECT_RENAME;
+ return 0;
+}
+
static enum parse_opt_result diff_opt_output(struct parse_opt_ctx_t *ctx,
const struct option *opt,
const char *arg, int unset)
return 0;
}
+static int diff_opt_patience(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+ int i;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+ options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
+ /*
+ * Both --patience and --anchored use PATIENCE_DIFF
+ * internally, so remove any anchors previously
+ * specified.
+ */
+ for (i = 0; i < options->anchors_nr; i++)
+ free(options->anchors[i]);
+ options->anchors_nr = 0;
+ return 0;
+}
+
+static int diff_opt_relative(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ options->flags.relative_name = 1;
+ if (arg)
+ options->prefix = arg;
+ return 0;
+}
+
static int diff_opt_unified(const struct option *opt,
const char *arg, int unset)
{
OPT_CALLBACK_F(0, "compact-summary", options, NULL,
N_("generate compact summary in diffstat"),
PARSE_OPT_NOARG, diff_opt_compact_summary),
+ OPT_CALLBACK_F(0, "binary", options, NULL,
+ N_("output a binary diff that can be applied"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_binary),
+ OPT_BOOL(0, "full-index", &options->flags.full_index,
+ N_("show full pre- and post-image object names on the \"index\" lines")),
OPT_CALLBACK_F(0, "output-indicator-new",
&options->output_indicators[OUTPUT_INDICATOR_NEW],
N_("<char>"),
N_("break complete rewrite changes into pairs of delete and create"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
diff_opt_break_rewrites),
+ OPT_CALLBACK_F('M', "find-renames", options, N_("<n>"),
+ N_("detect renames"),
+ PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
+ diff_opt_find_renames),
+ OPT_SET_INT_F('D', "irreversible-delete", &options->irreversible_delete,
+ N_("omit the preimage for deletes"),
+ 1, PARSE_OPT_NONEG),
+ OPT_CALLBACK_F('C', "find-copies", options, N_("<n>"),
+ N_("detect copies"),
+ PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
+ diff_opt_find_copies),
+ OPT_BOOL(0, "find-copies-harder", &options->flags.find_copies_harder,
+ N_("use unmodified files as source to find copies")),
+ OPT_SET_INT_F(0, "no-renames", &options->detect_rename,
+ N_("disable rename detection"),
+ 0, PARSE_OPT_NONEG),
+ OPT_BOOL(0, "rename-empty", &options->flags.rename_empty,
+ N_("use empty blobs as rename source")),
+
+ OPT_GROUP(N_("Diff algorithm options")),
+ OPT_BIT(0, "minimal", &options->xdl_opts,
+ N_("produce the smallest possible diff"),
+ XDF_NEED_MINIMAL),
+ OPT_BIT_F('w', "ignore-all-space", &options->xdl_opts,
+ N_("ignore whitespace when comparing lines"),
+ XDF_IGNORE_WHITESPACE, PARSE_OPT_NONEG),
+ OPT_BIT_F('b', "ignore-space-change", &options->xdl_opts,
+ N_("ignore changes in amount of whitespace"),
+ XDF_IGNORE_WHITESPACE_CHANGE, PARSE_OPT_NONEG),
+ OPT_BIT_F(0, "ignore-space-at-eol", &options->xdl_opts,
+ N_("ignore changes in whitespace at EOL"),
+ XDF_IGNORE_WHITESPACE_AT_EOL, PARSE_OPT_NONEG),
+ OPT_BIT_F(0, "ignore-cr-at-eol", &options->xdl_opts,
+ N_("ignore carrier-return at the end of line"),
+ XDF_IGNORE_CR_AT_EOL, PARSE_OPT_NONEG),
+ OPT_BIT_F(0, "ignore-blank-lines", &options->xdl_opts,
+ N_("ignore changes whose lines are all blank"),
+ XDF_IGNORE_BLANK_LINES, PARSE_OPT_NONEG),
+ OPT_BIT(0, "indent-heuristic", &options->xdl_opts,
+ N_("heuristic to shift diff hunk boundaries for easy reading"),
+ XDF_INDENT_HEURISTIC),
+ OPT_CALLBACK_F(0, "patience", options, NULL,
+ N_("generate diff using the \"patience diff\" algorithm"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ diff_opt_patience),
+ OPT_BITOP(0, "histogram", &options->xdl_opts,
+ N_("generate diff using the \"histogram diff\" algorithm"),
+ XDF_HISTOGRAM_DIFF, XDF_DIFF_ALGORITHM_MASK),
+ OPT_CALLBACK_F(0, "diff-algorithm", options, N_("<algorithm>"),
+ N_("choose a diff algorithm"),
+ PARSE_OPT_NONEG, diff_opt_diff_algorithm),
+ OPT_CALLBACK_F(0, "anchored", options, N_("<text>"),
+ N_("generate diff using the \"anchored diff\" algorithm"),
+ PARSE_OPT_NONEG, diff_opt_anchored),
OPT_GROUP(N_("Diff other options")),
+ OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
+ N_("when run from subdir, exclude changes outside and show relative paths"),
+ PARSE_OPT_NONEG | PARSE_OPT_OPTARG,
+ diff_opt_relative),
{ OPTION_CALLBACK, 0, "output", options, N_("<file>"),
N_("Output to a specific file"),
PARSE_OPT_NONEG, NULL, 0, diff_opt_output },
if (ac)
return ac;
- /* renames options */
- if (starts_with(arg, "-M") ||
- skip_to_optional_arg(arg, "--find-renames", NULL)) {
- if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
- return error("invalid argument to -M: %s", arg+2);
- options->detect_rename = DIFF_DETECT_RENAME;
- }
- else if (!strcmp(arg, "-D") || !strcmp(arg, "--irreversible-delete")) {
- options->irreversible_delete = 1;
- }
- else if (starts_with(arg, "-C") ||
- skip_to_optional_arg(arg, "--find-copies", NULL)) {
- if (options->detect_rename == DIFF_DETECT_COPY)
- options->flags.find_copies_harder = 1;
- if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
- return error("invalid argument to -C: %s", arg+2);
- options->detect_rename = DIFF_DETECT_COPY;
- }
- else if (!strcmp(arg, "--no-renames"))
- options->detect_rename = 0;
- else if (!strcmp(arg, "--rename-empty"))
- options->flags.rename_empty = 1;
- else if (!strcmp(arg, "--no-rename-empty"))
- options->flags.rename_empty = 0;
- else if (skip_to_optional_arg_default(arg, "--relative", &arg, NULL)) {
- options->flags.relative_name = 1;
- if (arg)
- options->prefix = arg;
- }
-
- /* xdiff options */
- else if (!strcmp(arg, "--minimal"))
- DIFF_XDL_SET(options, NEED_MINIMAL);
- else if (!strcmp(arg, "--no-minimal"))
- DIFF_XDL_CLR(options, NEED_MINIMAL);
- else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
- DIFF_XDL_SET(options, IGNORE_WHITESPACE);
- else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change"))
- DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
- else if (!strcmp(arg, "--ignore-space-at-eol"))
- DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
- else if (!strcmp(arg, "--ignore-cr-at-eol"))
- DIFF_XDL_SET(options, IGNORE_CR_AT_EOL);
- else if (!strcmp(arg, "--ignore-blank-lines"))
- DIFF_XDL_SET(options, IGNORE_BLANK_LINES);
- else if (!strcmp(arg, "--indent-heuristic"))
- DIFF_XDL_SET(options, INDENT_HEURISTIC);
- else if (!strcmp(arg, "--no-indent-heuristic"))
- DIFF_XDL_CLR(options, INDENT_HEURISTIC);
- else if (!strcmp(arg, "--patience")) {
- int i;
- options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
- /*
- * Both --patience and --anchored use PATIENCE_DIFF
- * internally, so remove any anchors previously
- * specified.
- */
- for (i = 0; i < options->anchors_nr; i++)
- free(options->anchors[i]);
- options->anchors_nr = 0;
- } else if (!strcmp(arg, "--histogram"))
- options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
- else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
- long value = parse_algorithm_value(optarg);
- if (value < 0)
- return error("option diff-algorithm accepts \"myers\", "
- "\"minimal\", \"patience\" and \"histogram\"");
- /* clear out previous settings */
- DIFF_XDL_CLR(options, NEED_MINIMAL);
- options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
- options->xdl_opts |= value;
- return argcount;
- } else if (skip_prefix(arg, "--anchored=", &arg)) {
- options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
- ALLOC_GROW(options->anchors, options->anchors_nr + 1,
- options->anchors_alloc);
- options->anchors[options->anchors_nr++] = xstrdup(arg);
- }
-
/* flags options */
- else if (!strcmp(arg, "--binary")) {
- enable_patch_output(&options->output_format);
- options->flags.binary = 1;
- }
- else if (!strcmp(arg, "--full-index"))
- options->flags.full_index = 1;
- else if (!strcmp(arg, "-a") || !strcmp(arg, "--text"))
+ if (!strcmp(arg, "-a") || !strcmp(arg, "--text"))
options->flags.text = 1;
else if (!strcmp(arg, "-R"))
options->flags.reverse_diff = 1;
- else if (!strcmp(arg, "--find-copies-harder"))
- options->flags.find_copies_harder = 1;
else if (!strcmp(arg, "--follow"))
options->flags.follow_renames = 1;
else if (!strcmp(arg, "--no-follow")) {
return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale));
}
-static int diff_scoreopt_parse(const char *opt)
-{
- int opt1, cmd;
-
- if (*opt++ != '-')
- return -1;
- cmd = *opt++;
- if (cmd == '-') {
- /* convert the long-form arguments into short-form versions */
- if (skip_prefix(opt, "find-copies", &opt)) {
- if (*opt == 0 || *opt++ == '=')
- cmd = 'C';
- } else if (skip_prefix(opt, "find-renames", &opt)) {
- if (*opt == 0 || *opt++ == '=')
- cmd = 'M';
- }
- }
- if (cmd != 'M' && cmd != 'C')
- return -1; /* that is not a -M, or -C option */
-
- opt1 = parse_rename_score(&opt);
- if (*opt != 0)
- return -1;
- return opt1;
-}
-
struct diff_queue_struct diff_queued_diff;
void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp)
projects / thirdparty / git.git / blobdiff