revision: --skip=<n>
This adds --skip=<n> option to revision traversal machinery. Documentation and test were added by Robert Fitzsimons. Signed-off-by: Robert Fitzsimons <robfitz@273k.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -10,6 +10,7 @@ SYNOPSIS
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--------
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[verse]
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'git-rev-list' [ \--max-count=number ]
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[ \--skip=number ]
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[ \--max-age=timestamp ]
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[ \--min-age=timestamp ]
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[ \--sparse ]
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@ -139,6 +140,10 @@ limiting may be applied.
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Limit the number of commits output.
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--skip='number'::
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Skip 'number' commits before starting to show the commit output.
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--since='date', --after='date'::
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Show commits more recent than a specific date.
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46
revision.c
46
revision.c
@ -523,6 +523,7 @@ void init_revisions(struct rev_info *revs, const char *prefix)
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revs->prefix = prefix;
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revs->max_age = -1;
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revs->min_age = -1;
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revs->skip_count = -1;
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revs->max_count = -1;
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revs->prune_fn = NULL;
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@ -759,6 +760,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
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revs->max_count = atoi(arg + 12);
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continue;
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}
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if (!strncmp(arg, "--skip=", 7)) {
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revs->skip_count = atoi(arg + 7);
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continue;
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}
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/* accept -<digit>, like traditional "head" */
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if ((*arg == '-') && isdigit(arg[1])) {
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revs->max_count = atoi(arg + 1);
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@ -1122,23 +1127,11 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
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commit->buffer, strlen(commit->buffer));
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}
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struct commit *get_revision(struct rev_info *revs)
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static struct commit *get_revision_1(struct rev_info *revs)
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{
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struct commit_list *list = revs->commits;
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if (!list)
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if (!revs->commits)
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return NULL;
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/* Check the max_count ... */
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switch (revs->max_count) {
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case -1:
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break;
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case 0:
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return NULL;
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default:
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revs->max_count--;
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}
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do {
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struct commit_list *entry = revs->commits;
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struct commit *commit = entry->item;
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@ -1205,3 +1198,28 @@ struct commit *get_revision(struct rev_info *revs)
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} while (revs->commits);
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return NULL;
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}
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struct commit *get_revision(struct rev_info *revs)
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{
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struct commit *c = NULL;
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if (0 < revs->skip_count) {
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while ((c = get_revision_1(revs)) != NULL) {
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if (revs->skip_count-- <= 0)
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break;
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}
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}
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/* Check the max_count ... */
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switch (revs->max_count) {
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case -1:
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break;
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case 0:
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return NULL;
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default:
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revs->max_count--;
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}
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if (c)
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return c;
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return get_revision_1(revs);
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}
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@ -75,6 +75,7 @@ struct rev_info {
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struct grep_opt *grep_filter;
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/* special limits */
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int skip_count;
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int max_count;
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unsigned long max_age;
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unsigned long min_age;
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51
t/t6005-rev-list-count.sh
Executable file
51
t/t6005-rev-list-count.sh
Executable file
@ -0,0 +1,51 @@
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#!/bin/sh
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test_description='git-rev-list --max-count and --skip test'
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. ./test-lib.sh
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test_expect_success 'setup' '
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for n in 1 2 3 4 5 ; do \
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echo $n > a ; \
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git add a ; \
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git commit -m "$n" ; \
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done
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'
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test_expect_success 'no options' '
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test $(git-rev-list HEAD | wc -l) = 5
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'
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test_expect_success '--max-count' '
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test $(git-rev-list HEAD --max-count=0 | wc -l) = 0 &&
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test $(git-rev-list HEAD --max-count=3 | wc -l) = 3 &&
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test $(git-rev-list HEAD --max-count=5 | wc -l) = 5 &&
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test $(git-rev-list HEAD --max-count=10 | wc -l) = 5
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'
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test_expect_success '--max-count all forms' '
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test $(git-rev-list HEAD --max-count=1 | wc -l) = 1 &&
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test $(git-rev-list HEAD -1 | wc -l) = 1 &&
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test $(git-rev-list HEAD -n1 | wc -l) = 1 &&
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test $(git-rev-list HEAD -n 1 | wc -l) = 1
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'
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test_expect_success '--skip' '
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test $(git-rev-list HEAD --skip=0 | wc -l) = 5 &&
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test $(git-rev-list HEAD --skip=3 | wc -l) = 2 &&
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test $(git-rev-list HEAD --skip=5 | wc -l) = 0 &&
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test $(git-rev-list HEAD --skip=10 | wc -l) = 0
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'
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test_expect_success '--skip --max-count' '
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test $(git-rev-list HEAD --skip=0 --max-count=0 | wc -l) = 0 &&
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test $(git-rev-list HEAD --skip=0 --max-count=10 | wc -l) = 5 &&
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test $(git-rev-list HEAD --skip=3 --max-count=0 | wc -l) = 0 &&
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test $(git-rev-list HEAD --skip=3 --max-count=1 | wc -l) = 1 &&
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test $(git-rev-list HEAD --skip=3 --max-count=2 | wc -l) = 2 &&
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test $(git-rev-list HEAD --skip=3 --max-count=10 | wc -l) = 2 &&
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test $(git-rev-list HEAD --skip=5 --max-count=10 | wc -l) = 0 &&
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test $(git-rev-list HEAD --skip=10 --max-count=10 | wc -l) = 0
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'
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test_done
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