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git/log: support -n option to restrict log counts

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this is useful for scripting, and convenient for
interactive use.
This commit is contained in:
Ori Bernstein 2022-07-03 04:38:13 +00:00
parent d457233c70
commit 21aac62c1f
2 changed files with 15 additions and 2 deletions
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9
sys/man/1/git
View file

@ -96,6 +96,10 @@ git/pull, git/rm, git/serve
.I expr .I expr
] ]
[ [
.B -n
.I count
]
[
.B -s .B -s
] ]
[ [
@ -384,6 +388,11 @@ The
.I -s .I -s
option shows a summary of the commit, instead of the full message. option shows a summary of the commit, instead of the full message.
The The
.I -n count
option stops printing messages after
.I count
messages.
The
.I -e expr .I -e expr
option shows commits matching the query expression provided. option shows commits matching the query expression provided.
The expression is in the syntax of The expression is in the syntax of

8
sys/src/cmd/git/log.c
View file

@ -14,6 +14,7 @@ Biobuf *out;
char *queryexpr; char *queryexpr;
char *commitid; char *commitid;
int shortlog; int shortlog;
int msgcount;
Objset done; Objset done;
Objq objq; Objq objq;
@ -180,7 +181,7 @@ showquery(char *q)
if((n = resolverefs(&h, q)) == -1) if((n = resolverefs(&h, q)) == -1)
sysfatal("resolve: %r"); sysfatal("resolve: %r");
for(i = 0; i < n; i++){ for(i = 0; i < n && msgcount-- > 0; i++){
if((o = readobject(h[i])) == nil) if((o = readobject(h[i])) == nil)
sysfatal("read %H: %r", h[i]); sysfatal("read %H: %r", h[i]);
show(o); show(o);
@ -206,7 +207,7 @@ showcommits(char *c)
qinit(&objq); qinit(&objq);
osinit(&done); osinit(&done);
qput(&objq, o, 0); qput(&objq, o, 0);
while(qpop(&objq, &e)){ while(qpop(&objq, &e) && msgcount-- > 0){
show(e.o); show(e.o);
for(i = 0; i < e.o->commit->nparent; i++){ for(i = 0; i < e.o->commit->nparent; i++){
if(oshas(&done, e.o->commit->parent[i])) if(oshas(&done, e.o->commit->parent[i]))
@ -243,6 +244,9 @@ main(int argc, char **argv)
case 's': case 's':
shortlog++; shortlog++;
break; break;
case 'n':
msgcount = atoi(EARGF(usage()));
break;
default: default:
usage(); usage();
break; break;