diff options
| -rw-r--r-- | Documentation/diff-options.txt | 4 | ||||
| -rw-r--r-- | diff.c | 42 | ||||
| -rwxr-xr-x | t/t4013-diff-various.sh | 27 | ||||
| -rw-r--r-- | t/t4013/diff.diff_--dirstat-by-file_initial_rearrange | 3 | ||||
| -rw-r--r-- | t/t4013/diff.diff_--dirstat_initial_rearrange | 3 | ||||
| -rw-r--r-- | t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ | 2 | ||||
| -rw-r--r-- | t/t4013/diff.log_--decorate=full_--all | 6 | ||||
| -rw-r--r-- | t/t4013/diff.log_--decorate_--all | 6 |
8 files changed, 81 insertions, 12 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index c93124be79..7e4bd425e1 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -72,6 +72,10 @@ endif::git-format-patch[] a cut-off percent (3% by default) are not shown. The cut-off percent can be set with `--dirstat=<limit>`. Changes in a child directory are not counted for the parent directory, unless `--cumulative` is used. ++ +Note that the `--dirstat` option computes the changes while ignoring +the amount of pure code movements within a file. In other words, +rearranging lines in a file is not counted as much as other changes. --dirstat-by-file[=<limit>]:: Same as `--dirstat`, but counts changed files instead of lines. @@ -1538,8 +1538,36 @@ static void show_dirstat(struct diff_options *options) struct diff_filepair *p = q->queue[i]; const char *name; unsigned long copied, added, damage; + int content_changed; - name = p->one->path ? p->one->path : p->two->path; + name = p->two->path ? p->two->path : p->one->path; + + if (p->one->sha1_valid && p->two->sha1_valid) + content_changed = hashcmp(p->one->sha1, p->two->sha1); + else + content_changed = 1; + + if (!content_changed) { + /* + * The SHA1 has not changed, so pre-/post-content is + * identical. We can therefore skip looking at the + * file contents altogether. + */ + damage = 0; + goto found_damage; + } + + if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE)) { + /* + * In --dirstat-by-file mode, we don't really need to + * look at the actual file contents at all. + * The fact that the SHA1 changed is enough for us to + * add this file to the list of results + * (with each file contributing equal damage). + */ + damage = 1; + goto found_damage; + } if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) { diff_populate_filespec(p->one, 0); @@ -1563,14 +1591,18 @@ static void show_dirstat(struct diff_options *options) /* * Original minus copied is the removed material, * added is the new material. They are both damages - * made to the preimage. In --dirstat-by-file mode, count - * damaged files, not damaged lines. This is done by - * counting only a single damaged line per file. + * made to the preimage. + * If the resulting damage is zero, we know that + * diffcore_count_changes() considers the two entries to + * be identical, but since content_changed is true, we + * know that there must have been _some_ kind of change, + * so we force all entries to have damage > 0. */ damage = (p->one->size - copied) + added; - if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE) && damage > 0) + if (!damage) damage = 1; +found_damage: ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc); dir.files[dir.nr].name = name; dir.files[dir.nr].changed = damage; diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh index 5daa0f2a0c..93a6f20871 100755 --- a/t/t4013-diff-various.sh +++ b/t/t4013-diff-various.sh @@ -80,18 +80,31 @@ test_expect_success setup ' git config log.showroot false && git commit --amend && + + GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" && + GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" && + export GIT_AUTHOR_DATE GIT_COMMITTER_DATE && + git checkout -b rearrange initial && + for i in B A; do echo $i; done >dir/sub && + git add dir/sub && + git commit -m "Rearranged lines in dir/sub" && + git checkout master && + git show-branch ' : <<\EOF ! [initial] Initial * [master] Merge branch 'side' - ! [side] Side ---- - - [master] Merge branch 'side' - *+ [side] Side - * [master^] Second -+*+ [initial] Initial + ! [rearrange] Rearranged lines in dir/sub + ! [side] Side +---- + + [rearrange] Rearranged lines in dir/sub + - [master] Merge branch 'side' + * + [side] Side + * [master^] Third + * [master~2] Second ++*++ [initial] Initial EOF V=`git version | sed -e 's/^git version //' -e 's/\./\\./g'` @@ -287,6 +300,8 @@ diff --no-index --name-status -- dir2 dir diff --no-index dir dir3 diff master master^ side diff --dirstat master~1 master~2 +diff --dirstat initial rearrange +diff --dirstat-by-file initial rearrange EOF test_expect_success 'log -S requires an argument' ' diff --git a/t/t4013/diff.diff_--dirstat-by-file_initial_rearrange b/t/t4013/diff.diff_--dirstat-by-file_initial_rearrange new file mode 100644 index 0000000000..e48e33f678 --- /dev/null +++ b/t/t4013/diff.diff_--dirstat-by-file_initial_rearrange @@ -0,0 +1,3 @@ +$ git diff --dirstat-by-file initial rearrange + 100.0% dir/ +$ diff --git a/t/t4013/diff.diff_--dirstat_initial_rearrange b/t/t4013/diff.diff_--dirstat_initial_rearrange new file mode 100644 index 0000000000..5fb02c13bc --- /dev/null +++ b/t/t4013/diff.diff_--dirstat_initial_rearrange @@ -0,0 +1,3 @@ +$ git diff --dirstat initial rearrange + 100.0% dir/ +$ diff --git a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ index 1f0f9ad44b..3b4e113012 100644 --- a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ +++ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ @@ -1,7 +1,7 @@ $ git format-patch --stdout --cover-letter -n initial..master^ From 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Mon Sep 17 00:00:00 2001 From: C O Mitter <committer@example.com> -Date: Mon, 26 Jun 2006 00:05:00 +0000 +Date: Mon, 26 Jun 2006 00:06:00 +0000 Subject: [DIFFERENT_PREFIX 0/2] *** SUBJECT HERE *** *** BLURB HERE *** diff --git a/t/t4013/diff.log_--decorate=full_--all b/t/t4013/diff.log_--decorate=full_--all index d155e0bab2..44d45257da 100644 --- a/t/t4013/diff.log_--decorate=full_--all +++ b/t/t4013/diff.log_--decorate=full_--all @@ -1,4 +1,10 @@ $ git log --decorate=full --all +commit cd4e72fd96faed3f0ba949dc42967430374e2290 (refs/heads/rearrange) +Author: A U Thor <author@example.com> +Date: Mon Jun 26 00:06:00 2006 +0000 + + Rearranged lines in dir/sub + commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD, refs/heads/master) Merge: 9a6d494 c7a2ab9 Author: A U Thor <author@example.com> diff --git a/t/t4013/diff.log_--decorate_--all b/t/t4013/diff.log_--decorate_--all index fd7c3e6439..27d3eabc26 100644 --- a/t/t4013/diff.log_--decorate_--all +++ b/t/t4013/diff.log_--decorate_--all @@ -1,4 +1,10 @@ $ git log --decorate --all +commit cd4e72fd96faed3f0ba949dc42967430374e2290 (rearrange) +Author: A U Thor <author@example.com> +Date: Mon Jun 26 00:06:00 2006 +0000 + + Rearranged lines in dir/sub + commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD, master) Merge: 9a6d494 c7a2ab9 Author: A U Thor <author@example.com> |