diff options
author | Junio C Hamano <gitster@pobox.com> | 2019-03-07 03:59:52 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2019-03-07 03:59:52 +0300 |
commit | 54b469b9e9a9f276a5980265cd2abeb003cb6bf3 (patch) | |
tree | 3f49a8bb58e9a36a00a3556990ae9e39e0815eaf /diff.c | |
parent | 7d0c1f4556ad89b2f7eae97d31ea85c3bfdf7c87 (diff) | |
parent | ed88148674502893790bf13d70154c157a489a6b (diff) |
Merge branch 'nd/diff-parseopt'
The diff machinery, one of the oldest parts of the system, which
long predates the parse-options API, uses fairly long and complex
handcrafted option parser. This is being rewritten to use the
parse-options API.
* nd/diff-parseopt:
diff.c: convert --raw
diff.c: convert -W|--[no-]function-context
diff.c: convert -U|--unified
diff.c: convert -u|-p|--patch
diff.c: prepare to use parse_options() for parsing
diff.h: avoid bit fields in struct diff_flags
diff.h: keep forward struct declarations sorted
parse-options: allow ll_callback with OPTION_CALLBACK
parse-options: avoid magic return codes
parse-options: stop abusing 'callback' for lowlevel callbacks
parse-options: add OPT_BITOP()
parse-options: disable option abbreviation with PARSE_OPT_KEEP_UNKNOWN
parse-options: add one-shot mode
parse-options.h: remove extern on function prototypes
Diffstat (limited to 'diff.c')
-rw-r--r-- | diff.c | 71 |
1 files changed, 59 insertions, 12 deletions
@@ -23,6 +23,7 @@ #include "argv-array.h" #include "graph.h" #include "packfile.h" +#include "parse-options.h" #include "help.h" #ifdef NO_FAST_WORKING_DIRECTORY @@ -4491,6 +4492,8 @@ static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) builtin_checkdiff(name, other, attr_path, p->one, p->two, o); } +static void prep_parse_options(struct diff_options *options); + void repo_diff_setup(struct repository *r, struct diff_options *options) { memcpy(options, &default_diff_options, sizeof(*options)); @@ -4532,6 +4535,8 @@ void repo_diff_setup(struct repository *r, struct diff_options *options) options->color_moved = diff_color_moved_default; options->color_moved_ws_handling = diff_color_moved_ws_default; + + prep_parse_options(options); } void diff_setup_done(struct diff_options *options) @@ -4635,6 +4640,8 @@ void diff_setup_done(struct diff_options *options) if (!options->use_color || external_diff()) options->color_moved = 0; + + FREE_AND_NULL(options->parseopts); } static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val) @@ -4926,6 +4933,47 @@ static int parse_objfind_opt(struct diff_options *opt, const char *arg) return 1; } +static int diff_opt_unified(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + char *s; + + BUG_ON_OPT_NEG(unset); + + options->context = strtol(arg, &s, 10); + if (*s) + return error(_("%s expects a numerical value"), "--unified"); + enable_patch_output(&options->output_format); + + return 0; +} + +static void prep_parse_options(struct diff_options *options) +{ + struct option parseopts[] = { + OPT_GROUP(N_("Diff output format options")), + OPT_BITOP('p', "patch", &options->output_format, + N_("generate patch"), + DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), + OPT_BITOP('u', NULL, &options->output_format, + N_("generate patch"), + DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), + OPT_CALLBACK_F('U', "unified", options, N_("<n>"), + N_("generate diffs with <n> lines context"), + PARSE_OPT_NONEG, diff_opt_unified), + OPT_BOOL('W', "function-context", &options->flags.funccontext, + N_("generate diffs with <n> lines context")), + OPT_BIT_F(0, "raw", &options->output_format, + N_("generate the diff in raw format"), + DIFF_FORMAT_RAW, PARSE_OPT_NONEG), + OPT_END() + }; + + ALLOC_ARRAY(options->parseopts, ARRAY_SIZE(parseopts)); + memcpy(options->parseopts, parseopts, sizeof(parseopts)); +} + int diff_opt_parse(struct diff_options *options, const char **av, int ac, const char *prefix) { @@ -4936,13 +4984,18 @@ int diff_opt_parse(struct diff_options *options, if (!prefix) prefix = ""; + ac = parse_options(ac, av, prefix, options->parseopts, NULL, + PARSE_OPT_KEEP_DASHDASH | + PARSE_OPT_KEEP_UNKNOWN | + PARSE_OPT_NO_INTERNAL_HELP | + PARSE_OPT_ONE_SHOT | + PARSE_OPT_STOP_AT_NON_OPTION); + + if (ac) + return ac; + /* Output format options */ - if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch") - || opt_arg(arg, 'U', "unified", &options->context)) - enable_patch_output(&options->output_format); - else if (!strcmp(arg, "--raw")) - options->output_format |= DIFF_FORMAT_RAW; - else if (!strcmp(arg, "--patch-with-raw")) { + if (!strcmp(arg, "--patch-with-raw")) { enable_patch_output(&options->output_format); options->output_format |= DIFF_FORMAT_RAW; } else if (!strcmp(arg, "--numstat")) @@ -5230,12 +5283,6 @@ int diff_opt_parse(struct diff_options *options, else if (opt_arg(arg, '\0', "inter-hunk-context", &options->interhunkcontext)) ; - else if (!strcmp(arg, "-W")) - options->flags.funccontext = 1; - else if (!strcmp(arg, "--function-context")) - options->flags.funccontext = 1; - else if (!strcmp(arg, "--no-function-context")) - options->flags.funccontext = 0; else if ((argcount = parse_long_opt("output", av, &optarg))) { char *path = prefix_filename(prefix, optarg); options->file = xfopen(path, "w"); |