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Merge branch 'jk/diff-submodule-diff-inline'

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The "git diff --submodule={short,log}" mechanism has been enhanced
to allow "--submodule=diff" to show the patch between the submodule
commits bound to the superproject.

* jk/diff-submodule-diff-inline:
  diff: teach diff to display submodule difference with an inline diff
  submodule: refactor show_submodule_summary with helper function
  submodule: convert show_submodule_summary to use struct object_id *
  allow do_submodule_path to work even if submodule isn't checked out
  diff: prepare for additional submodule formats
  graph: add support for --line-prefix on all graph-aware output
  diff.c: remove output_prefix_length field
  cache: add empty_tree_oid object and helper function
This commit is contained in:
Junio C Hamano
2016-09-12 15:34:31 -07:00
parent cda1bbd474 fd47ae6a5b
commit 305d7f1339
20 changed files with 1666 additions and 164 deletions
Download Patch File Download Diff File Expand all files Collapse all files

64
diff.c
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@ -18,6 +18,7 @@
#include "ll-merge.h"
#include "string-list.h"
#include "argv-array.h"
#include "graph.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
@ -131,9 +132,11 @@ static int parse_dirstat_params(struct diff_options *options, const char *params
static int parse_submodule_params(struct diff_options *options, const char *value)
{
if (!strcmp(value, "log"))
DIFF_OPT_SET(options, SUBMODULE_LOG);
options->submodule_format = DIFF_SUBMODULE_LOG;
else if (!strcmp(value, "short"))
DIFF_OPT_CLR(options, SUBMODULE_LOG);
options->submodule_format = DIFF_SUBMODULE_SHORT;
else if (!strcmp(value, "diff"))
options->submodule_format = DIFF_SUBMODULE_INLINE_DIFF;
else
return -1;
return 0;
@ -1625,7 +1628,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
*/
if (options->stat_width == -1)
width = term_columns() - options->output_prefix_length;
width = term_columns() - strlen(line_prefix);
else
width = options->stat_width ? options->stat_width : 80;
number_width = decimal_width(max_change) > number_width ?
@ -2299,24 +2302,6 @@ static void builtin_diff(const char *name_a,
struct strbuf header = STRBUF_INIT;
const char *line_prefix = diff_line_prefix(o);
if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
(!one->mode || S_ISGITLINK(one->mode)) &&
(!two->mode || S_ISGITLINK(two->mode))) {
const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
show_submodule_summary(o->file, one->path ? one->path : two->path,
line_prefix,
one->oid.hash, two->oid.hash,
two->dirty_submodule,
meta, del, add, reset);
return;
}
if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
textconv_one = get_textconv(one);
textconv_two = get_textconv(two);
}
diff_set_mnemonic_prefix(o, "a/", "b/");
if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
a_prefix = o->b_prefix;
@ -2326,6 +2311,35 @@ static void builtin_diff(const char *name_a,
b_prefix = o->b_prefix;
}
if (o->submodule_format == DIFF_SUBMODULE_LOG &&
(!one->mode || S_ISGITLINK(one->mode)) &&
(!two->mode || S_ISGITLINK(two->mode))) {
const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
show_submodule_summary(o->file, one->path ? one->path : two->path,
line_prefix,
&one->oid, &two->oid,
two->dirty_submodule,
meta, del, add, reset);
return;
} else if (o->submodule_format == DIFF_SUBMODULE_INLINE_DIFF &&
(!one->mode || S_ISGITLINK(one->mode)) &&
(!two->mode || S_ISGITLINK(two->mode))) {
const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
show_submodule_inline_diff(o->file, one->path ? one->path : two->path,
line_prefix,
&one->oid, &two->oid,
two->dirty_submodule,
meta, del, add, reset, o);
return;
}
if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
textconv_one = get_textconv(one);
textconv_two = get_textconv(two);
}
/* Never use a non-valid filename anywhere if at all possible */
name_a = DIFF_FILE_VALID(one) ? name_a : name_b;
name_b = DIFF_FILE_VALID(two) ? name_b : name_a;
@ -3915,7 +3929,7 @@ int diff_opt_parse(struct diff_options *options,
DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
handle_ignore_submodules_arg(options, arg);
} else if (!strcmp(arg, "--submodule"))
DIFF_OPT_SET(options, SUBMODULE_LOG);
options->submodule_format = DIFF_SUBMODULE_LOG;
else if (skip_prefix(arg, "--submodule=", &arg))
return parse_submodule_opt(options, arg);
else if (skip_prefix(arg, "--ws-error-highlight=", &arg))
@ -3966,6 +3980,12 @@ int diff_opt_parse(struct diff_options *options,
options->a_prefix = optarg;
return argcount;
}
else if ((argcount = parse_long_opt("line-prefix", av, &optarg))) {
options->line_prefix = optarg;
options->line_prefix_length = strlen(options->line_prefix);
graph_setup_line_prefix(options);
return argcount;
}
else if ((argcount = parse_long_opt("dst-prefix", av, &optarg))) {
options->b_prefix = optarg;
return argcount;