diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 510 |
1 files changed, 299 insertions, 211 deletions
@@ -104,11 +104,6 @@ static const char *color_diff_slots[] = { [DIFF_FILE_NEW_BOLD] = "newBold", }; -static NORETURN void die_want_option(const char *option_name) -{ - die(_("option '%s' requires a value"), option_name); -} - define_list_config_array_extra(color_diff_slots, {"plain"}); static int parse_diff_color_slot(const char *var) @@ -4689,8 +4684,6 @@ static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *va return 1; } -static int diff_scoreopt_parse(const char *opt); - static inline int short_opt(char opt, const char **argv, const char **optarg) { @@ -4728,77 +4721,56 @@ int parse_long_opt(const char *opt, const char **argv, return 2; } -static int stat_opt(struct diff_options *options, const char **av) +static int diff_opt_stat(const struct option *opt, const char *value, int unset) { - const char *arg = av[0]; - char *end; + struct diff_options *options = opt->value; int width = options->stat_width; int name_width = options->stat_name_width; int graph_width = options->stat_graph_width; int count = options->stat_count; - int argcount = 1; + char *end; - if (!skip_prefix(arg, "--stat", &arg)) - BUG("stat option does not begin with --stat: %s", arg); - end = (char *)arg; + BUG_ON_OPT_NEG(unset); - switch (*arg) { - case '-': - if (skip_prefix(arg, "-width", &arg)) { - if (*arg == '=') - width = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-width"); - else if (!*arg) { - width = strtoul(av[1], &end, 10); - argcount = 2; - } - } else if (skip_prefix(arg, "-name-width", &arg)) { - if (*arg == '=') - name_width = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-name-width"); - else if (!*arg) { - name_width = strtoul(av[1], &end, 10); - argcount = 2; - } - } else if (skip_prefix(arg, "-graph-width", &arg)) { - if (*arg == '=') - graph_width = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-graph-width"); - else if (!*arg) { - graph_width = strtoul(av[1], &end, 10); - argcount = 2; - } - } else if (skip_prefix(arg, "-count", &arg)) { - if (*arg == '=') - count = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-count"); - else if (!*arg) { - count = strtoul(av[1], &end, 10); - argcount = 2; - } + if (!strcmp(opt->long_name, "stat")) { + if (value) { + width = strtoul(value, &end, 10); + if (*end == ',') + name_width = strtoul(end+1, &end, 10); + if (*end == ',') + count = strtoul(end+1, &end, 10); + if (*end) + return error(_("invalid --stat value: %s"), value); } - break; - case '=': - width = strtoul(arg+1, &end, 10); - if (*end == ',') - name_width = strtoul(end+1, &end, 10); - if (*end == ',') - count = strtoul(end+1, &end, 10); - } + } else if (!strcmp(opt->long_name, "stat-width")) { + width = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else if (!strcmp(opt->long_name, "stat-name-width")) { + name_width = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else if (!strcmp(opt->long_name, "stat-graph-width")) { + graph_width = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else if (!strcmp(opt->long_name, "stat-count")) { + count = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else + BUG("%s should not get here", opt->long_name); - /* Important! This checks all the error cases! */ - if (*end) - return 0; options->output_format |= DIFF_FORMAT_DIFFSTAT; options->stat_name_width = name_width; options->stat_graph_width = graph_width; options->stat_width = width; options->stat_count = count; - return argcount; + return 0; } static int parse_dirstat_opt(struct diff_options *options, const char *params) @@ -4934,6 +4906,139 @@ static int parse_objfind_opt(struct diff_options *opt, const char *arg) return 1; } +static int diff_opt_break_rewrites(const struct option *opt, + const char *arg, int unset) +{ + int *break_opt = opt->value; + int opt1, opt2; + + BUG_ON_OPT_NEG(unset); + if (!arg) + arg = ""; + opt1 = parse_rename_score(&arg); + if (*arg == 0) + opt2 = 0; + else if (*arg != '/') + return error(_("%s expects <n>/<m> form"), opt->long_name); + else { + arg++; + opt2 = parse_rename_score(&arg); + } + if (*arg != 0) + return error(_("%s expects <n>/<m> form"), opt->long_name); + *break_opt = opt1 | (opt2 << 16); + return 0; +} + +static int diff_opt_char(const struct option *opt, + const char *arg, int unset) +{ + char *value = opt->value; + + BUG_ON_OPT_NEG(unset); + if (arg[1]) + return error(_("%s expects a character, got '%s'"), + opt->long_name, arg); + *value = arg[0]; + return 0; +} + +static int diff_opt_compact_summary(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_ARG(arg); + if (unset) { + options->flags.stat_with_summary = 0; + } else { + options->flags.stat_with_summary = 1; + options->output_format |= DIFF_FORMAT_DIFFSTAT; + } + return 0; +} + +static int diff_opt_dirstat(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!strcmp(opt->long_name, "cumulative")) { + if (arg) + BUG("how come --cumulative take a value?"); + arg = "cumulative"; + } else if (!strcmp(opt->long_name, "dirstat-by-file")) + parse_dirstat_opt(options, "files"); + parse_dirstat_opt(options, arg ? arg : ""); + 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) +{ + struct diff_options *options = opt->value; + char *path; + + BUG_ON_OPT_NEG(unset); + path = prefix_filename(ctx->prefix, arg); + options->file = xfopen(path, "w"); + options->close_file = 1; + if (options->use_color != GIT_COLOR_ALWAYS) + options->use_color = GIT_COLOR_NEVER; + free(path); + 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) { @@ -4957,6 +5062,9 @@ static void prep_parse_options(struct diff_options *options) OPT_BITOP('p', "patch", &options->output_format, N_("generate patch"), DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), + OPT_BIT_F('s', "no-patch", &options->output_format, + N_("suppress diff output"), + DIFF_FORMAT_NO_OUTPUT, PARSE_OPT_NONEG), OPT_BITOP('u', NULL, &options->output_format, N_("generate patch"), DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), @@ -4968,6 +5076,131 @@ static void prep_parse_options(struct diff_options *options) OPT_BIT_F(0, "raw", &options->output_format, N_("generate the diff in raw format"), DIFF_FORMAT_RAW, PARSE_OPT_NONEG), + OPT_BITOP(0, "patch-with-raw", &options->output_format, + N_("synonym for '-p --raw'"), + DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW, + DIFF_FORMAT_NO_OUTPUT), + OPT_BITOP(0, "patch-with-stat", &options->output_format, + N_("synonym for '-p --stat'"), + DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT, + DIFF_FORMAT_NO_OUTPUT), + OPT_BIT_F(0, "numstat", &options->output_format, + N_("machine friendly --stat"), + DIFF_FORMAT_NUMSTAT, PARSE_OPT_NONEG), + OPT_BIT_F(0, "shortstat", &options->output_format, + N_("output only the last line of --stat"), + DIFF_FORMAT_SHORTSTAT, PARSE_OPT_NONEG), + OPT_CALLBACK_F('X', "dirstat", options, N_("<param1,param2>..."), + N_("output the distribution of relative amount of changes for each sub-directory"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_dirstat), + OPT_CALLBACK_F(0, "cumulative", options, NULL, + N_("synonym for --dirstat=cumulative"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + diff_opt_dirstat), + OPT_CALLBACK_F(0, "dirstat-by-file", options, N_("<param1,param2>..."), + N_("synonym for --dirstat=files,param1,param2..."), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_dirstat), + OPT_BIT_F(0, "check", &options->output_format, + N_("warn if changes introduce conflict markers or whitespace errors"), + DIFF_FORMAT_CHECKDIFF, PARSE_OPT_NONEG), + OPT_BIT_F(0, "summary", &options->output_format, + N_("condensed summary such as creations, renames and mode changes"), + DIFF_FORMAT_SUMMARY, PARSE_OPT_NONEG), + OPT_BIT_F(0, "name-only", &options->output_format, + N_("show only names of changed files"), + DIFF_FORMAT_NAME, PARSE_OPT_NONEG), + OPT_BIT_F(0, "name-status", &options->output_format, + N_("show only names and status of changed files"), + DIFF_FORMAT_NAME_STATUS, PARSE_OPT_NONEG), + OPT_CALLBACK_F(0, "stat", options, N_("<width>[,<name-width>[,<count>]]"), + N_("generate diffstat"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-width", options, N_("<width>"), + N_("generate diffstat with a given width"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-name-width", options, N_("<width>"), + N_("generate diffstat with a given name width"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-graph-width", options, N_("<width>"), + N_("generate diffstat with a given graph width"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-count", options, N_("<count>"), + N_("generate diffstat with limited lines"), + PARSE_OPT_NONEG, diff_opt_stat), + 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, "output-indicator-new", + &options->output_indicators[OUTPUT_INDICATOR_NEW], + N_("<char>"), + N_("specify the character to indicate a new line instead of '+'"), + PARSE_OPT_NONEG, diff_opt_char), + OPT_CALLBACK_F(0, "output-indicator-old", + &options->output_indicators[OUTPUT_INDICATOR_OLD], + N_("<char>"), + N_("specify the character to indicate an old line instead of '-'"), + PARSE_OPT_NONEG, diff_opt_char), + OPT_CALLBACK_F(0, "output-indicator-context", + &options->output_indicators[OUTPUT_INDICATOR_CONTEXT], + N_("<char>"), + N_("specify the character to indicate a context instead of ' '"), + PARSE_OPT_NONEG, diff_opt_char), + + OPT_GROUP(N_("Diff rename options")), + OPT_CALLBACK_F('B', "break-rewrites", &options->break_opt, N_("<n>[/<m>]"), + 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_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 }, + OPT_END() }; @@ -4995,102 +5228,8 @@ int diff_opt_parse(struct diff_options *options, if (ac) return ac; - /* Output format options */ - if (!strcmp(arg, "--patch-with-raw")) { - enable_patch_output(&options->output_format); - options->output_format |= DIFF_FORMAT_RAW; - } else if (!strcmp(arg, "--numstat")) - options->output_format |= DIFF_FORMAT_NUMSTAT; - else if (!strcmp(arg, "--shortstat")) - options->output_format |= DIFF_FORMAT_SHORTSTAT; - else if (skip_prefix(arg, "-X", &arg) || - skip_to_optional_arg(arg, "--dirstat", &arg)) - return parse_dirstat_opt(options, arg); - else if (!strcmp(arg, "--cumulative")) - return parse_dirstat_opt(options, "cumulative"); - else if (skip_to_optional_arg(arg, "--dirstat-by-file", &arg)) { - parse_dirstat_opt(options, "files"); - return parse_dirstat_opt(options, arg); - } - else if (!strcmp(arg, "--check")) - options->output_format |= DIFF_FORMAT_CHECKDIFF; - else if (!strcmp(arg, "--summary")) - options->output_format |= DIFF_FORMAT_SUMMARY; - else if (!strcmp(arg, "--patch-with-stat")) { - enable_patch_output(&options->output_format); - options->output_format |= DIFF_FORMAT_DIFFSTAT; - } else if (!strcmp(arg, "--name-only")) - options->output_format |= DIFF_FORMAT_NAME; - else if (!strcmp(arg, "--name-status")) - options->output_format |= DIFF_FORMAT_NAME_STATUS; - else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch")) - options->output_format |= DIFF_FORMAT_NO_OUTPUT; - else if (starts_with(arg, "--stat")) - /* --stat, --stat-width, --stat-name-width, or --stat-count */ - return stat_opt(options, av); - else if (!strcmp(arg, "--compact-summary")) { - options->flags.stat_with_summary = 1; - options->output_format |= DIFF_FORMAT_DIFFSTAT; - } else if (!strcmp(arg, "--no-compact-summary")) - options->flags.stat_with_summary = 0; - else if (skip_prefix(arg, "--output-indicator-new=", &arg)) - options->output_indicators[OUTPUT_INDICATOR_NEW] = arg[0]; - else if (skip_prefix(arg, "--output-indicator-old=", &arg)) - options->output_indicators[OUTPUT_INDICATOR_OLD] = arg[0]; - else if (skip_prefix(arg, "--output-indicator-context=", &arg)) - options->output_indicators[OUTPUT_INDICATOR_CONTEXT] = arg[0]; - - /* renames options */ - else if (starts_with(arg, "-B") || - skip_to_optional_arg(arg, "--break-rewrites", NULL)) { - if ((options->break_opt = diff_scoreopt_parse(arg)) == -1) - return error("invalid argument to -B: %s", arg+2); - } - else 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")) + if (!strcmp(arg, "--indent-heuristic")) DIFF_XDL_SET(options, INDENT_HEURISTIC); else if (!strcmp(arg, "--no-indent-heuristic")) DIFF_XDL_CLR(options, INDENT_HEURISTIC); @@ -5135,8 +5274,6 @@ int diff_opt_parse(struct diff_options *options, 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")) { @@ -5284,15 +5421,7 @@ int diff_opt_parse(struct diff_options *options, else if (opt_arg(arg, '\0', "inter-hunk-context", &options->interhunkcontext)) ; - else if ((argcount = parse_long_opt("output", av, &optarg))) { - char *path = prefix_filename(prefix, optarg); - options->file = xfopen(path, "w"); - options->close_file = 1; - if (options->use_color != GIT_COLOR_ALWAYS) - options->use_color = GIT_COLOR_NEVER; - free(path); - return argcount; - } else + else return 0; return 1; } @@ -5333,47 +5462,6 @@ int parse_rename_score(const char **cp_p) return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale)); } -static int diff_scoreopt_parse(const char *opt) -{ - int opt1, opt2, cmd; - - if (*opt++ != '-') - return -1; - cmd = *opt++; - if (cmd == '-') { - /* convert the long-form arguments into short-form versions */ - if (skip_prefix(opt, "break-rewrites", &opt)) { - if (*opt == 0 || *opt++ == '=') - cmd = 'B'; - } else 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' && cmd != 'B') - return -1; /* that is not a -M, -C, or -B option */ - - opt1 = parse_rename_score(&opt); - if (cmd != 'B') - opt2 = 0; - else { - if (*opt == 0) - opt2 = 0; - else if (*opt != '/') - return -1; /* we expect -B80/99 or -B80 */ - else { - opt++; - opt2 = parse_rename_score(&opt); - } - } - if (*opt != 0) - return -1; - return opt1 | (opt2 << 16); -} - struct diff_queue_struct diff_queued_diff; void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp) |