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range-diff: move the diffopt initialization down one layer

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It is actually only the `output()` function that uses those diffopts. By
moving the diffopt initialization down into that function, it is
encapsulated better.

Incidentally, it will also make it easier to implement the `--left-only`
and `--right-only` options in `git range-diff` because the `output()`
function is now receiving all range-diff options as a parameter, not
just the diffopts.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2021-02-05 14:46:12 +00:00 committed by Junio C Hamano
parent f1ce6c191e
commit 3e6046edad
1 changed files with 31 additions and 33 deletions
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64
range-diff.c
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@ -464,12 +464,35 @@ static void patch_diff(const char *a, const char *b,
diff_flush(diffopt);
}
static struct strbuf *output_prefix_cb(struct diff_options *opt, void *data)
{
return data;
}
static void output(struct string_list *a, struct string_list *b,
struct diff_options *diffopt)
struct range_diff_options *range_diff_opts)
{
struct strbuf buf = STRBUF_INIT, dashes = STRBUF_INIT;
int patch_no_width = decimal_width(1 + (a->nr > b->nr ? a->nr : b->nr));
int i = 0, j = 0;
struct diff_options opts;
struct strbuf indent = STRBUF_INIT;
if (range_diff_opts->diffopt)
memcpy(&opts, range_diff_opts->diffopt, sizeof(opts));
else
diff_setup(&opts);
if (!opts.output_format)
opts.output_format = DIFF_FORMAT_PATCH;
opts.flags.suppress_diff_headers = 1;
opts.flags.dual_color_diffed_diffs =
range_diff_opts->dual_color;
opts.flags.suppress_hunk_header_line_count = 1;
opts.output_prefix = output_prefix_cb;
strbuf_addstr(&indent, " ");
opts.output_prefix_data = &indent;
diff_setup_done(&opts);
/*
* We assume the user is really more interested in the second argument
@ -490,7 +513,7 @@ static void output(struct string_list *a, struct string_list *b,
/* Show unmatched LHS commit whose predecessors were shown. */
if (i < a->nr && a_util->matching < 0) {
output_pair_header(diffopt, patch_no_width,
output_pair_header(&opts, patch_no_width,
&buf, &dashes, a_util, NULL);
i++;
continue;
@ -498,7 +521,7 @@ static void output(struct string_list *a, struct string_list *b,
/* Show unmatched RHS commits. */
while (j < b->nr && b_util->matching < 0) {
output_pair_header(diffopt, patch_no_width,
output_pair_header(&opts, patch_no_width,
&buf, &dashes, NULL, b_util);
b_util = ++j < b->nr ? b->items[j].util : NULL;
}
@ -506,22 +529,18 @@ static void output(struct string_list *a, struct string_list *b,
/* Show matching LHS/RHS pair. */
if (j < b->nr) {
a_util = a->items[b_util->matching].util;
output_pair_header(diffopt, patch_no_width,
output_pair_header(&opts, patch_no_width,
&buf, &dashes, a_util, b_util);
if (!(diffopt->output_format & DIFF_FORMAT_NO_OUTPUT))
if (!(opts.output_format & DIFF_FORMAT_NO_OUTPUT))
patch_diff(a->items[b_util->matching].string,
b->items[j].string, diffopt);
b->items[j].string, &opts);
a_util->shown = 1;
j++;
}
}
strbuf_release(&buf);
strbuf_release(&dashes);
}
static struct strbuf *output_prefix_cb(struct diff_options *opt, void *data)
{
return data;
strbuf_release(&indent);
}
int show_range_diff(const char *range1, const char *range2,
@ -538,31 +557,10 @@ int show_range_diff(const char *range1, const char *range2,
res = error(_("could not parse log for '%s'"), range2);
if (!res) {
struct diff_options opts;
struct strbuf indent = STRBUF_INIT;
if (range_diff_opts->diffopt)
memcpy(&opts, range_diff_opts->diffopt, sizeof(opts));
else
diff_setup(&opts);
if (!opts.output_format)
opts.output_format = DIFF_FORMAT_PATCH;
opts.flags.suppress_diff_headers = 1;
opts.flags.dual_color_diffed_diffs =
range_diff_opts->dual_color;
opts.flags.suppress_hunk_header_line_count = 1;
opts.output_prefix = output_prefix_cb;
strbuf_addstr(&indent, " ");
opts.output_prefix_data = &indent;
diff_setup_done(&opts);
find_exact_matches(&branch1, &branch2);
get_correspondences(&branch1, &branch2,
range_diff_opts->creation_factor);
output(&branch1, &branch2, &opts);
strbuf_release(&indent);
output(&branch1, &branch2, range_diff_opts);
}
string_list_clear(&branch1, 1);